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CN105462644A - Preparation method of combustion-supporting type biomass moulding fuel - Google Patents

Preparation method of combustion-supporting type biomass moulding fuel Download PDF

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Publication number
CN105462644A
CN105462644A CN201510843227.7A CN201510843227A CN105462644A CN 105462644 A CN105462644 A CN 105462644A CN 201510843227 A CN201510843227 A CN 201510843227A CN 105462644 A CN105462644 A CN 105462644A
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China
Prior art keywords
biomass
preparation
aeration
fuel
combustion
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CN201510843227.7A
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Chinese (zh)
Inventor
张庆春
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Guangdong Tuofeng Industrial Co Ltd
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Guangdong Tuofeng Industrial Co Ltd
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Priority to CN201510843227.7A priority Critical patent/CN105462644A/en
Publication of CN105462644A publication Critical patent/CN105462644A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00Solid fuels
    • C10L5/40Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The invention discloses a preparation method of a combustion-supporting type biomass moulding fuel. The preparation method includes the steps of preparation of biomass fuel basal plates, preparation of an aeration type binder, surface treatment of the biomass fuel basal plates and laminated molding of lamp cloth. The prepared biomass moulding raw material includes a plurality of laminated-moulded biomass fuel basal plates; an aeration adhesive layer is arranged between each two adjacent biomass fuel basal plates; the aeration adhesive layers are made of a mixture of a fiber binder and bicarbonate, and the mass ratio of the bicarbonate is 3-10% of the mixture of the fiber binder and the bicarbonate. The preparation method of the combustion-supporting type biomass moulding fuel has the advantages of convenient processing, high product combustion performance, high universality, low cost and easy scale production.

Description

A kind of preparation method of combustion-supporting type biomass molding fuel
Technical field
The present invention relates to Biomass Briquette Technologies field, be specially a kind of preparation method of combustion-supporting type biomass molding fuel.
Background technology
Along with expanding economy.The energy and environmental problem have become the focus of global concern, and the pollution problem that traditional fossil energy such as such as coal, oil and natural gas etc. produces due to the day by day exhausted energy dilemma brought and its burning becomes increasingly conspicuous, and the clean renewable energy source of exploitation is extremely urgent.Biomass are a kind of multifarious Energy resources, wide material sources, and application is simple, has a good application prospect as the effective substitute energy of one.In the last few years, utilize forest processing waste, the investigation and application making biomass granule fuel after the grinding and processing such as straw also increases gradually, current biomass energy directly forms strip, particulate state or bulk mainly through direct extrusion molding, in the course of processing, moisture problem for the course of processing of biomass fuel and the impact of performance inevitable, if moisture content is too high, biomass fuel can be caused to form slaking and rot in the process stored, also can cause the performance of combustionproperty due to moisture content problem in combustion processes; If moisture content is on the low side, lamination process difficulty is large, has a strong impact on the lifting of biomass fuel compacted density.。
Summary of the invention
The object of this invention is to provide a kind of preparation method of combustion-supporting type biomass molding fuel; take into full account the impact of biomass fuel moisture content; make full use of the moisture of biomass fuel inside, have easy to process, product combustionproperty is high, be convenient to carry, with low cost and be convenient to the feature of large-scale production.
The present invention can be achieved through the following technical solutions:
The invention discloses a kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of supercarbonate aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, the some aeration type binding agent upper and lower surfaces alignment scribbling aeration type binding agent, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In a first step, by adding unslaked lime and kaolin, unslaked lime both can absorb moisture and form slaked lime in the process of mixing, and the slaked lime formed and kaolin produce cohesive action, thus inter-adhesive for biomass crumb feedstock, facilitate extrusion molding; And unslaked lime can produce a large amount of heat in the process absorbing moisture formation slaked lime, thus softening biomass crumb feedstock, reduce extrusion molding difficulty.In second step, the binding agent of aeration type is formed by adding supercarbonate in cellulosic binder, finally at the aeration type adhesive layer forming biomass molding fuel, by being provided with aeration tack coat at biomass fuel substrate, the supercarbonate that heating can produce carbonic acid gas is included in aeration tack coat, the separation accelerated in the process that supercarbonate both can have been utilized to decompose between different layers increases the surface-area of burning contacts, take water vapour out of when can be overflowed by the carbonic acid gas produced again and generate water-gas lifting combustionproperty, thus use the burning of biomass fuel more abundant, effectively improve the combustionproperty of biomass molding fuel, and, water vapour is in the process of effusion, water vapour with simultaneously with iron screen contact, water vapour reacts with iron simple substance under high-temperature situation, generates Z 250 and hydrogen, the density of hydrogen is less, effusion speed is faster, and the meeting progress that acceleration biomass molding fuel is fluffy further makes biomass fuel contact with air and improves efficiency of combustion, and hydrogen is simultaneously as inflammable gas, also can burn in combustion, promote the combustionproperty of biomass fuel.By arranging iron screen cloth, both can react in combustion processes and water vapour the medium producing hydrogen as biomass fuel, also can as the structural support of biomass molding fuel inside, even if compacted density promotes further or the number of plies of pressing increases further, also the requirement of mechanical strength can be met, avoid the cracking in handling process, promote the convenience of carrying.In addition; the raw material selected is convenient source conservation cost; the considerably less course of processing of aeration agent supercarbonate consumption adopted is very simple; the course of processing is without the need to mating special fabrication design; effective reduction manufacturing cost; add after all burnt, iron screen cloth can also repeat to recycle and also can reduce use cost, is convenient to large-scale promotion and uses.
In addition, by the mode of lamination, the preparation of biomass molding fuel is more simple, and the thickness that lamination is formed is more flexible, and the combustion time of the biomass molding fuel of high thickness and height densification significantly improves, and heat effect also obtain lifting to a certain degree.
In the preparation process of biomass fuel substrate described in the first step, the moisture content of preliminary drying process control biomass chip is 8% to 15%.By the moisture content of conservative control biomass fuel, both effectively reduce the difficulty of biomass fuel compaction process, effectively avoid again because the too high storage for biomass molding fuel of moisture content impacts.
The material of described biomass crumb feedstock comprises agricultural wastes, xylogen and/or oil crops waste, according to actual needs, can select dissimilar material flexibly, fully reduce costs, and expands the use of biomass molding fuel.
Described agricultural wastes comprise one or more the mixture in stalk, corn cob, bagasse, algae and Herba Eichhorniae, and source widely, effectively reduces manufacturing cost.
Described xylogen comprises one or more the mixture in wooden unit, wood chip and bark, and source widely, effectively reduces manufacturing cost.
Described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree, and source widely, effectively reduces manufacturing cost.
Described fiber-like tackiness agent is paper waste and/hydrolysis fiber, and source widely, effectively reduces manufacturing cost, can play cohesive action, effectively disperses again supercarbonate to ensure the safe effect of aeration agent.
The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:30 ~ 1:70, different Thickness Ratios can be selected according to actual needs, the thickness requirement of further lifting biomass molding fuel, the high compacted density of biomass molding fuel does not provide potential room for promotion.
Described biomass fuel substrate is Puffer-type biomass fuel substrate, and described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, and inflation mixes.Select Puffer-type biomass fuel substrate, the contact gear ratio surface-area of biomass molding fuel can be increased further in combustion, promote the performance of biomass molding fuel combustionproperty.
The number of plies of described biomass fuel substrate be five layers and more than, satisfactory thickness can be selected flexibly according to actual needs, expand the thickness of biomass molding fuel further.
Described supercarbonate can be sodium bicarbonate, saleratus or the mixture of the two, selects according to practical situation.
The order number of described subsides screen cloth is 10-500 order, can select flexibly according to actual compacted density.
The preparation method of a kind of combustion-supporting type biomass molding fuel of the present invention, has following beneficial effect:
The first, easy to process, again subsides screen cloth is mixed in by the mode of first processing biological fuel substrate and aeration type binding agent and carries out lamination between aeration adhesive layer and biomass fuel substrate and form final biomass molding fuel, the course of processing of biomass fuel substrate and aeration type binding agent is simple, convenient to the process operation of roll laminating, processing convenience is high;
Second, product combustionproperty is high, by being provided with aeration tack coat and iron screen cloth at biomass fuel substrate, the supercarbonate that heating can produce carbonic acid gas is included in aeration tack coat, the separation accelerated in the process that supercarbonate both can have been utilized to decompose between different layers increases the surface-area of burning contacts, can be taken again out of water vapour by the carbonic acid gas produced and form water-gas lifting combustionproperty, also reacted with iron screen cloth in the process can overflowed by water vapour generation hydrogen, thus use the burning of biomass fuel more abundant, effectively improve the combustionproperty of biomass molding fuel,
Three, carrying is convenient to, both can react in combustion processes and water vapour the medium producing hydrogen as biomass fuel, also can as the structural support of biomass molding fuel inside, even if compacted density promotes further or the number of plies of pressing increases further, also the requirement of mechanical strength can be met, avoid the cracking in handling process, promote the convenience of carrying;
Four, the raw material selected is convenient source conservation cost, the considerably less course of processing of aeration agent supercarbonate consumption adopted is very simple, the course of processing is without the need to mating special fabrication design, effective reduction manufacturing cost, add after all burnt, iron screen cloth can also repeat to recycle and also can reduce use cost;
Five, be convenient to large-scale production, preparation method's structure of combustion-supporting type biomass molding fuel is simple, and effectively simplify manufacturing procedure, and be the operation that routinizes, continuity of operation is high, effectively reduces the difficulty of large-scale production.
Accompanying drawing explanation
Accompanying drawing 1 is the diagrammatic cross-section of preparation method's embodiment 1 of a kind of combustion-supporting type biomass molding fuel of the present invention.
Embodiment
In order to make those skilled in the art person understand technical scheme of the present invention better, below in conjunction with embodiment and accompanying drawing, product of the present invention is described in further detail.
Embodiment 1
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of sodium bicarbonate aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In embodiment 1, the biomass molding fuel finally preparing gained is five-layer structure, the cross-section structure of the biomass molding fuel that accompanying drawing 1 is embodiment 1, comprise three biomass fuel substrates 1 laminated into type, aeration tack coat 2 is provided with between described biomass fuel substrate 1 adjacent between two, iron screen cloth 3 is provided with between described aeration tack coat 2 and described biomass fuel substrate 1, described aeration tack coat 2 is the mixture of fiber-like tackiness agent and sodium bicarbonate, and the quality proportioning of described sodium bicarbonate is 3% of the mixture of described fiber-like tackiness agent and sodium bicarbonate.The material of described biomass fuel substrate 1 is agricultural wastes, and described agricultural wastes comprise one or more the mixture in stalk, corn cob, bagasse, algae and Herba Eichhorniae.Described aeration tack coat 2 is 1:50 with the Thickness Ratio of described biomass fuel substrate 1.Described biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, mixes.
Embodiment 2
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of sodium bicarbonate aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In example 2, the biomass molding fuel finally preparing gained is six Rotating fields, comprise two biomass fuel substrates laminated into type, aeration tack coat is provided with between described two adjacent biomass fuel substrates, described aeration tack coat is the mixture of fiber-like tackiness agent and sodium bicarbonate, and the quality proportioning of described sodium bicarbonate is 10% of the mixture of described fiber-like tackiness agent and sodium bicarbonate.The moisture content of described biomass fuel substrate is 8%.Described biomass fuel substrate comprises biomass crumb feedstock, and described biomass crumb feedstock comprises xylogen, and described xylogen comprises one or more the mixture in wooden unit, wood chip and bark.Described fiber-like tackiness agent is paper waste and/hydrolysis fiber.The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:30.The described biomass fuel substrate that fills adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, mixes.
Embodiment 3
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of sodium bicarbonate aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In embodiment 3, the biomass molding fuel finally preparing gained is six Rotating fields, comprise three biomass fuel substrates laminated into type, aeration tack coat is provided with between described biomass fuel substrate adjacent between two, iron screen cloth is provided with between described aeration tack coat and described biomass fuel substrate, described aeration tack coat is the mixture of fiber-like tackiness agent and sodium bicarbonate, and the quality proportioning of described sodium bicarbonate is 7% of the mixture of described fiber-like tackiness agent and sodium bicarbonate.The moisture content of described biomass fuel substrate is 15%.Described biomass fuel substrate comprises biomass crumb feedstock, and described biomass crumb feedstock is oil crops waste.Described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree.Described fiber-like tackiness agent is paper waste and/hydrolysis fiber.The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:70.Described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, mixes.
Embodiment 4
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of saleratus aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In example 4, the biomass molding fuel finally preparing gained is five-layer structure, comprise three biomass fuel substrates laminated into type, aeration tack coat is provided with between described biomass fuel substrate adjacent between two, iron screen cloth is provided with between described aeration tack coat and described biofuel substrate, described aeration tack coat is the mixture of fiber-like tackiness agent and saleratus, and the quality proportioning of described saleratus is 10% of the mixture of described fiber-like tackiness agent and saleratus.The moisture content of described biomass fuel substrate is 10%.Described biomass fuel substrate comprises biomass crumb feedstock, and described biomass crumb feedstock comprises agricultural wastes, xylogen and oil crops waste.Described agricultural wastes comprise one or more the mixture in stalk, corn cob, bagasse, algae and Herba Eichhorniae.Described xylogen comprises one or more the mixture in wooden unit, wood chip and bark.Described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree.Described fiber-like tackiness agent is paper waste and/hydrolysis fiber.The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:50.Described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, mixes.
Embodiment 5
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of saleratus aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In embodiment 5, the biomass molding fuel finally preparing gained is five-layer structure, comprise five biomass fuel substrates laminated into type, aeration tack coat is provided with between described biomass fuel substrate adjacent between two, iron screen cloth is provided with between described aeration tack coat and described biomass fuel substrate, described aeration tack coat is the mixture of fiber-like tackiness agent and saleratus, and the quality proportioning of described saleratus is 10% of the mixture of described fiber-like tackiness agent and saleratus.The moisture content of described biomass fuel substrate is 12%.Described biomass fuel substrate comprises biomass crumb feedstock, and described biomass crumb feedstock comprises agricultural wastes, xylogen and oil crops waste.Described agricultural wastes comprise one or more the mixture in stalk, corn cob, bagasse, algae and Herba Eichhorniae.Described xylogen comprises one or more the mixture in wooden unit, wood chip and bark.Described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree.Described fiber-like tackiness agent is paper waste and/hydrolysis fiber.The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:50.Described biomass fuel substrate is Puffer-type biomass fuel substrate, and described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, and inflation mixes.
Embodiment 6
A kind of preparation method of combustion-supporting type biomass molding fuel, comprise the following steps: the preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, inflation mixes, and extrusion molding obtains the biomass fuel substrate of regular shape; The preparation of second step, aeration type binding agent, adds the agent of saleratus aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent; The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent; 4th step, laminated into type, described biomass fuel substrate also comprises the moulding process of cellular breather hole before laminated into type, described cellular breather hole is arranged on surface and the inside of described biomass molding fuel, the some aeration type binding agent upper and lower surface alignment scribbling aeration type binding agent, breather hole position in process laminated into type of adjacent biomass fuel substrate is relative, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
In embodiment 6, the biomass molding fuel finally preparing gained is five-layer structure, comprise three biomass fuel substrates laminated into type, aeration tack coat is provided with between described biomass fuel substrate adjacent between two, iron screen cloth is provided with between described aeration tack coat and described biomass fuel substrate, described aeration tack coat is the mixture of fiber-like tackiness agent and saleratus, and the quality proportioning of described saleratus is 10% of the mixture of described fiber-like tackiness agent and saleratus.The moisture content of described biomass fuel substrate is 10%.Described biomass fuel substrate comprises biomass crumb feedstock, and described biomass crumb feedstock is oil crops waste.Described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree.Described fiber-like tackiness agent is paper waste and/hydrolysis fiber.The Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:70.Described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, mixes.
Meanwhile, preparing the specific performance of the biological shaped fuel of aeration type of gained in order to assess the method for the invention, testing from the concrete combustionproperty of aspect to embodiment 1 ~ 6 such as calorific value, rate of combustion and heating rates respectively.Concrete test data is as shown in table 1:
The concrete combustionproperty test data of the different embodiment of table 1
Group number Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6
Calorific value (kcal/kg) 5355 5650 5646 5482 5698 5786
Rate of combustion (%) 97.2 96.3 96.8 97.2 98.2 98.1
Thermo-efficiency (%) 94.0 94.5 95.3 95.9 96.8 96.5
As can be seen from Table 1, the inventive method prepares the biomass molding fuel calorific value of gained at more than 5200lcal/Kg, and rate of combustion is more than 95%, and thermo-efficiency is more than 92%.And the concrete combustionproperty of traditional biomass molding fuel is: calorific value is at 4500 ~ 4800kcal/kg, and rate of combustion is between 90 ~ 96, and heating rate is between 80 ~ 90.By contrast, the preparation method of combustion-supporting type biomass molding fuel of the present invention all has significant lifting in combustionproperty indexs such as calorific value, rate of combustion and heating rates, is with a wide range of applications.
And can see from table 1 data, embodiment 4 and the embodiment 5 of same material contrast, and adopt Puffer-type biomass molding fuel to be to provide biomass extrusion materials combustionproperty and have certain effect; Contrasted by embodiment 3 and embodiment 6, increase the content of aeration agent sodium bicarbonate, also obviously can promote the combustionproperty of biomass extrusion materials.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly; But all those skilled in the art are not departing within the scope of technical solution of the present invention, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection domain all still belonging to technical scheme of the present invention.

Claims (10)

1. a preparation method for combustion-supporting type biomass molding fuel, is characterized in that comprising the following steps:
The preparation of the first step, biomass fuel substrate, the biomass chip of cellulose family is carried out pulverizing, preliminary drying, add and be equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5%, mix, extrusion molding obtains the biomass fuel substrate of regular shape;
The preparation of second step, aeration type binding agent, adds the agent of supercarbonate aeration at fiber-like tackiness agent according to quality proportioning 3 ~ 10%, is uniformly mixed and obtains aeration type binding agent;
The surface treatment of the 3rd step, biomass fuel substrate, the biomass fuel substrate of the first step gained is carried out surface roughening process, then need the surface laminating iron screen cloth of pressing at biomass fuel substrate, then form aeration tack coat at iron screen surface coating second step gained aeration type binding agent;
4th step, laminated into type, the some aeration type binding agent upper and lower surfaces alignment scribbling aeration type binding agent, then by roll squeezer to roll laminating, obtain final lamination type biomass molding fuel.
2. the preparation method of combustion-supporting type biomass molding fuel according to claim 1, is characterized in that: in the preparation process of biomass fuel substrate described in the first step, and the moisture content of preliminary drying process control biomass chip is 8% to 15%.
3. the preparation method of combustion-supporting type biomass molding fuel according to claim 1 and 2, is characterized in that: the material of described biomass crumb feedstock comprises agricultural wastes, xylogen and/or oil crops waste.
4. the preparation method of combustion-supporting type biomass molding fuel according to claim 3, is characterized in that: described agricultural wastes comprise one or more the mixture in stalk, corn cob, bagasse, algae and Herba Eichhorniae.
5. the preparation method of combustion-supporting type biomass molding fuel according to claim 4, is characterized in that: described xylogen comprises one or more the mixture in wooden unit, wood chip and bark.
6. the preparation method of combustion-supporting type biomass molding fuel according to claim 5, is characterized in that: described oil crops waste comprises one or more the mixture in cottonseed, numb seed and tung oil tree.
7. the preparation method of combustion-supporting type biomass molding fuel according to claim 6, is characterized in that: described fiber-like tackiness agent is paper waste and/hydrolysis fiber.
8. the preparation method of combustion-supporting type biomass molding fuel according to claim 7, is characterized in that: the Thickness Ratio of described aeration tack coat and described biomass fuel substrate is 1:30 ~ 1:70.
9. the preparation method of combustion-supporting type biomass molding fuel according to claim 8, it is characterized in that: described biomass fuel substrate is Puffer-type biomass fuel substrate, described Puffer-type biomass fuel substrate adds and is equivalent to the unslaked lime of biomass crumb feedstock siccative weight 3 ~ 8%, the kaolin of 2 ~ 5% in preparation process, and inflation mixes.
10. the preparation method of combustion-supporting type biomass molding fuel according to claim 8, is characterized in that: the number of plies of described biomass fuel substrate be five layers and more than.
CN201510843227.7A 2015-11-26 2015-11-26 Preparation method of combustion-supporting type biomass moulding fuel Pending CN105462644A (en)

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GB280696A (en) * 1926-10-29 1927-11-24 Frank Leslie Sharp Composite blocks prepared from scrap and intended for use as fuel
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