CN115970481B - Sintering machine low temperature denitration system - Google Patents
Sintering machine low temperature denitration systemInfo
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- CN115970481B CN115970481B CN202211492315.3A CN202211492315A CN115970481B CN 115970481 B CN115970481 B CN 115970481B CN 202211492315 A CN202211492315 A CN 202211492315A CN 115970481 B CN115970481 B CN 115970481B
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
本发明公开了一种烧结机低温脱硝系统，属于空气处理设备技术领域，包括烧结机和脱硝塔，脱硝塔包括塔体、脱硫组件和催化组件，塔体具有一个密闭的空腔，空腔与进气端和排气端连通，脱硫组件安装在塔体内，进入空腔的烟气经过脱硫组件流向排气端，脱硫组件包括自上而下依次安装在塔体内的环体一、盘体和环体二，盘体将环体一与环体二之间的腔室分为腔体一和腔体二，进入环体一内的烟气通过连通管一进入环体二内，并与环体二内部的溶液进行脱硫反应，催化组件安装在塔体内，排出的烟气进过催化组件进行脱硝。该发明通过碳酸钠溶液与烟气中的二氧化硫气体进行反应，避免二氧化硫气体进入催化剂，造成催化剂失效的问题。
The invention discloses a low-temperature denitration system for a sintering machine, which belongs to the technical field of air treatment equipment, and includes a sintering machine and a denitration tower. The denitration tower includes a tower body, a desulfurization component and a catalytic component. The tower body has a closed cavity, and the cavity is connected to an air inlet end and an exhaust end. The desulfurization component is installed in the tower body. The flue gas entering the cavity flows to the exhaust end through the desulfurization component. The desulfurization component includes a ring body 1, a disc body and a ring body 2 which are sequentially installed in the tower body from top to bottom. The disc body divides the chamber between the ring body 1 and the ring body 2 into a cavity 1 and a cavity 2. The flue gas entering the ring body 1 enters the ring body 2 through a connecting pipe 1, and undergoes a desulfurization reaction with a solution inside the ring body 2. The catalytic component is installed in the tower body, and the exhausted flue gas passes through the catalytic component for denitration. The invention uses a sodium carbonate solution to react with sulfur dioxide gas in the flue gas, thereby avoiding the problem of sulfur dioxide gas entering the catalyst and causing catalyst failure.
Description
Technical Field
The invention relates to the field of air treatment equipment, in particular to a low-temperature denitration system of a sintering machine.
Background
With the development of national economy and the increasing of the living standard of people, the environmental problem is more and more paid attention to, and the nitrogen oxides are always focused by the country as pollutants closely related to the air quality. Iron and steel enterprises sintering machines are also receiving increasing attention as a key NOx emission source for denitration.
In the low-temperature denitration and denitration, the denitration reaction is realized by means of catalytic reaction of a catalyst, and along with sulfur dioxide gas contained in flue gas generated by a sintering machine, the main components of a common SCR denitration catalyst are titanium dioxide, vanadium pentoxide, tungsten trioxide and the like. Sulfur dioxide gas is prone to catalyst reactions causing catalyst failure.
Disclosure of Invention
In order to solve the technical problems, the invention provides a low-temperature denitration system of a sintering machine, which comprises the sintering machine and a denitration tower, wherein a smoke exhaust channel of the sintering machine is communicated with a smoke inlet channel of the denitration tower;
The denitration tower comprises a tower body, a desulfurization component and a catalytic component, wherein the tower body is provided with a closed cavity, the cavity is communicated with an air inlet end and an air exhaust end, the desulfurization component is arranged in the tower body, flue gas entering the cavity flows to the air exhaust end through the desulfurization component, the desulfurization component comprises a first ring body, a disc body and a second ring body which are sequentially arranged in the tower body from top to bottom, the cavity between the first ring body and the second ring body is divided into a first cavity and a second cavity by the disc body, flue gas entering the first ring body enters the second ring body through a communicating pipe and is subjected to desulfurization reaction with solution in the second ring body, the sulfur-removed gas enters the two ends of the cavity and flows to the air exhaust end through the communicating pipe, the catalytic component is arranged in the tower body, and the discharged flue gas is subjected to denitration through the catalytic component.
Further, the tower body comprises a base, a cylinder body and a cover body, wherein the cylinder body is vertically arranged, the upper port of the cylinder body is sealed through the cover body, the lower port of the cylinder body is sealed through the base, an exhaust pipe and an air inlet pipe are communicated with the cylinder body, and the air inlet pipe is positioned on the upper side of the exhaust pipe.
Further, the air inlet pipe is communicated with the inside of the cylinder body through a step hole formed in the inner wall of the cylinder body, dust removal components which are distributed coaxially are arranged in the air inlet pipe, and the air outlet end of the dust removal components is arranged in the step hole.
Further, the dust removal subassembly includes body, helical blade one and helical blade two, the outside of body is equipped with helical blade one, the inboard of body is equipped with helical blade two, it has a plurality of bar groove to run through on the lateral wall of body, and wherein the width of bar groove narrows to the inlet end one side of body, the body cooperation is installed in the intake pipe, the end cooperation of giving vent to anger of body is installed in the step hole, the inlet end outside of body has cup jointed the bearing to the cooperation is installed in the port of intake pipe, helical blade one is located the annular chamber that body and intake pipe formed, dust groove has been opened to the bottom side of intake pipe, dust collecting groove is installed in the outside of dust groove.
Further, the first ring body and the second ring body are of a cylinder structure with one closed end, the opening of the first ring body and the opening of the second ring body are installed in opposite directions, a plurality of air inlets are annularly formed in the bottom surface of the first ring body and communicated with the cavity, a plurality of annularly distributed air outlets are formed in the bottom surface of the second ring body and communicated with the second cavity, the second cavity is communicated with a connecting pipe, the opening of the second ring body is closed through a sealing cover, sodium carbonate solution is filled in a cavity of the second ring body, the second ring body is communicated with the first ring body through the first connecting pipe, the second connecting pipe penetrating through the second ring body is communicated with the cylinder, and the port of the second connecting pipe is higher than the end surface of the second ring body;
The gas entering through the gas inlet pipe enters the first cavity, passes through the gas inlet hole and enters the first ring body, enters the second ring body through the first communicating pipe, reacts with the sodium carbonate solution to remove sulfur dioxide gas contained in the flue gas, enters the second cavity through the gas outlet hole, and enters the cylinder body downwards through the second communicating pipe passing through the second ring body.
Further, an arc opening is formed in the side wall of the cylinder body, the arc opening and the formed first cavity and second cavity are formed in the arc opening, hinge seats are arranged on two sides of the arc opening, arc plates are mounted on the hinge seats, the arc opening is closed through the two arc plates, the arc opening is locked through a lock body, and connecting pipes are arranged on the arc plates.
Further, be connected with the hob that stretches into the barrel on the lid, the bottom of hob is located ring body one, ring body one upside is equipped with the toper casing that is located the barrel, the upper side and the inner wall laminating of toper casing of hob, install the motor of being connected with the hob transmission on the lid.
Further, the catalytic component is a disc-shaped catalyst, and a plurality of round holes are formed in the disc-shaped catalyst.
Compared with the prior art, the invention has the beneficial effects that:
1. The side surface of the cylinder body is provided with the drain pipe which is communicated with the interior of the second ring body, the reacted solution is discharged through the drain pipe, and the three-way valve is communicated with the connecting pipe, so that sodium carbonate solution is added into the interior of the second ring body, the added solution enters the interior of the second ring body through the exhaust hole, and excessive solution is discharged through the three-way valve, so that the liquid level surface in the second ring body is higher than the end surface of the bottom end of the first connecting pipe, and the flue gas and the solution are fully mixed.
2. In the process of mixing the flue gas and the solution, dust in the flue gas is conveniently removed, meanwhile, the temperature of the inflowing flue gas is reduced, and the problem that the catalyst is invalid due to the fact that sulfur dioxide gas enters the catalyst is avoided through the reaction of the sodium carbonate solution and sulfur dioxide gas in the flue gas.
3. According to the invention, the screw rod is driven to slowly rotate by the installed motor, and the slowly rotating screw rod drives dust and impurities in the air in the first ring body to move upwards, so that the dust and impurities pass through the air hole in the screw rod along the body to enter the first communicating pipe, and simple impurity removal work is realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the whole cross-sectional structure of the present invention;
FIG. 3 is a schematic view of the cylinder and screw rod mating structure of the present invention;
FIG. 4 is a schematic view of the fitting cross-section structure of the cylinder and screw rod of the present invention;
FIG. 5 is a schematic view of the desulfurization module structure of the present invention;
FIG. 6 is a schematic cross-sectional view of a desulfurization module according to the present invention;
FIG. 7 is a schematic view of a barrel structure of the present invention;
FIG. 8 is a schematic cross-sectional view of a cylinder according to the present invention;
FIG. 9 is a schematic view of a dust removing assembly according to the present invention;
fig. 10 is a schematic structural diagram of a denitration system according to the present invention.
The device comprises a sintering machine, a denitration tower, a base, a cylinder, a 201, an exhaust pipe, a 202, an air inlet pipe, a 2021, a dust outlet groove, a 2022, a step hole, a 203, a dust removing pipe, a 204, an arc plate, a 205, a connecting pipe, a 206, a lock body, a 207, a hinge seat, a 208, an arc opening, a 3, a cover body, a 4, a first ring body, a 401, an air inlet hole, a 5, a disk body, a 6, a second ring body, a 601, an air outlet hole, a 7, a first communicating pipe, a 8, a second communicating pipe, a 9, a sealing cover, a 10, a first cavity, a 11, a second cavity, a 12, a spiral rod, a 13, a conical shell, a 14, a motor, a 15, a pipe body, a 1501, a strip groove, a 16, a bearing, a 17, a spiral blade, a first 18, a spiral blade second, a 19, a dust collecting groove, a 20 and a catalyst.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1-10, the invention discloses a low-temperature denitration system of a sintering machine, which comprises a sintering machine A and a denitration tower B, wherein a smoke exhaust channel of the sintering machine A is communicated with a smoke inlet channel of the denitration tower B;
the denitration tower B comprises:
The tower body is provided with a closed cavity, the cavity is communicated with the air inlet end and the air outlet end, so that flue gas generated by the sintering machine A can pass through the tower body conveniently, and the air inlet end or the air outlet end of the tower body is provided with an air pump so as to drive air to flow in the tower body conveniently;
The desulfurization component is arranged in the tower body, and flue gas entering the cavity flows to the exhaust end through the desulfurization component;
the desulfurization component comprises a first ring body 4, a disc body 5 and a second ring body 6 which are sequentially arranged in the tower body from top to bottom;
The disc body 5 divides a cavity between the first ring body 4 and the second ring body 6 into a first cavity 10 and a second cavity 11;
The flue gas entering the ring body I4 enters the ring body II 6 through the communicating pipe I7 and carries out desulfurization reaction with the solution in the ring body II 6;
The gas after sulfur removal enters the end 11 of the cavity II and flows to the exhaust end through the communicating pipe II 8;
The ring body I4 and the ring body II 6 are of a cylinder structure with one closed end, the opening of the ring body I4 and the opening of the ring body II 6 are installed in opposite directions, a plurality of air inlets 401 are annularly formed in the bottom surface of the ring body I4, the air inlets 401 are communicated with the cavity I10, a plurality of annularly distributed air outlets 601 are formed in the bottom surface of the ring body II 6, the air outlets 601 are communicated with the cavity II 11, the cavity II 11 is communicated with a connecting pipe 205 arranged, the opening of the ring body II 6 is closed by a sealing cover 9, sodium carbonate solution is filled in the cavity of the ring body II 6, the ring body II 6 is communicated with the ring body I4 by a communicating pipe I7, the communicating pipe II 8 penetrating through the ring body II 6 realizes the communication of the cavity II 11 and the cylinder 2, and the port of the communicating pipe II 8 is higher than the end surface of the ring body II 6;
The gas entering through the gas inlet pipe 202 enters the first cavity 10, passes through the gas inlet 401 and enters the first ring body 4, enters the second ring body 6 through the first communicating pipe 7, reacts with sodium carbonate solution to remove sulfur dioxide gas contained in the flue gas, enters the second cavity 11 through the gas outlet 601, and downwards enters the cylinder 2 through the second communicating pipe 8 passing through the second ring body 6;
a drain pipe is arranged on the side surface of the cylinder body 2 and is communicated with the interior of the second ring body 6, the reacted solution is discharged through the drain pipe, a three-way valve is communicated with the connecting pipe 205, so that sodium carbonate solution is added into the second cavity 11, the added solution enters the interior of the second ring body 6 through the exhaust hole 601, and excessive solution is discharged through the three-way valve, so that the liquid level surface in the second ring body 6 is higher than the bottom end surface of the first connecting pipe 7, and the flue gas and the solution are fully mixed;
in the process of mixing the flue gas and the solution, dust in the flue gas is conveniently removed, meanwhile, the inflowing flue gas is cooled, and the sulfur dioxide gas in the flue gas reacts with the sodium carbonate solution to avoid the problem that the sulfur dioxide gas enters the catalyst 20 to cause the failure of the catalyst 20.
The catalytic assembly is arranged in the tower body, and the discharged flue gas enters the catalytic assembly for denitration.
The tower body comprises a base 1, a cylinder body 2 and a cover body 3, wherein the cylinder body 2 is vertically arranged, the upper port of the cylinder body 2 is sealed through the cover body 3, the lower port of the cylinder body 2 is sealed through the base 1, the cylinder body 2 is communicated with an exhaust pipe 201 and an air inlet pipe 202, and the air inlet pipe 202 is positioned on the upper side of the exhaust pipe 201.
The air inlet pipe 202 is communicated with the inside of the cylinder 2 through a stepped hole 2022 formed in the inner wall of the cylinder 2, dust removing components which are coaxially distributed are arranged in the air inlet pipe 202, and the air outlet end of the dust removing components is arranged in the stepped hole 2022.
The dust removal assembly comprises a pipe body 15, a first spiral blade 17 and a second spiral blade 18, the first spiral blade 17 is arranged on the outer side of the pipe body 15, the second spiral blade 18 is arranged on the inner side of the pipe body 15, a plurality of strip-shaped grooves 1501 penetrate through the side wall of the pipe body 15, the width of each strip-shaped groove 1501 is narrowed towards one side of the air inlet end of the pipe body 15, the pipe body 15 is installed in the air inlet pipe 202 in a matched mode, the air outlet end of the pipe body 15 is installed in the step hole 2022 in a matched mode, a bearing 16 is sleeved on the outer side of the air inlet end of the pipe body 15 and installed in a matched mode in a port of the air inlet pipe 202, the first spiral blade 17 is located in an annular cavity formed by the pipe body 15 and the air inlet pipe 202, a dust outlet groove 2021 is formed in a penetrating mode on the bottom side of the air inlet pipe 202, and a dust collecting groove 19 is installed on the outer side of the dust outlet groove 2021.
In the air inlet process, the fast flowing air passes through the second spiral blade 18, so that the whole rotation of the belt pipe body 15 is realized, and the first spiral blade 17 and the second spiral blade 18 are opposite in rotation direction, and meanwhile, the first spiral blade 17 occupies a small cross section, so that the rotating first spiral blade 17 does not rigidly enter air, and the rotating first spiral blade 17 pushes the outside air to enter the dust collection groove 19 through the strip-shaped groove 1501 and the dust outlet groove 2021 so as to be discharged;
In the process of rotating the pipe body 15, particles in generated flue gas move outwards under the action of centrifugal force, so that the content of flue gas dust discharged by the first spiral blade 17 is high, the outlet end of the dust collecting groove 19 is connected with a flue gas dust settling device, and the air after dust removal is communicated with the air inlet pipe 202 again.
An arc opening 208 is formed in the side wall of the cylinder body 2, the arc opening 208, a first cavity 10 and a second cavity 11 are formed, hinge seats 207 are arranged on two side edges of the arc opening 208, arc plates 204 are arranged on the hinge seats 207, the arc openings 208 are closed by the two arc plates 204, the arc plates are locked by a lock body 206, and connecting pipes 205 are arranged on the arc plates 204.
The cover body 3 is connected with a screw rod 12 extending into the cylinder body 2, the bottom end of the screw rod 12 is positioned in a ring body I4, a conical shell 13 positioned in the cylinder body 2 is arranged on the upper side of the ring body I4, the upper side surface of the screw rod 12 is attached to the inner wall of the conical shell 13, and the cover body 3 is provided with a motor 14 in transmission connection with the screw rod 12;
the inner wall of the cylinder 2 is provided with a dust removing pipe 203 communicated with the cavity between the conical shell 13 and the cover body 3, impurities moving upwards through the screw rod 12 fall on the conical surface of the conical shell 13, and the impurities are cleaned through the dust removing pipe 203.
The screw rod 12 is driven to slowly rotate by the installed motor 14, the slowly rotating screw rod 12 drives dust and impurities in the air in the first ring body 4 to move upwards, and the dust and impurities pass through the air holes in the screw rod 12 along the body to enter the first communicating pipe 7, so that simple impurity removal work is realized.
The catalytic component is a disc-shaped catalyst 20, and a plurality of round holes are arranged on the disc-shaped catalyst.
Working principle:
an air pump is arranged at the air inlet end or the air outlet end of the tower body, and the flue gas passes through the tower body through the work of the air pump;
the gas entering through the gas inlet pipe 202 enters the first cavity 10, passes through the gas inlet 401 and enters the first ring body 4, enters the second ring body 6 through the first communicating pipe 7, reacts with sodium carbonate solution to remove sulfur dioxide gas contained in the gas, enters the second cavity 11 through the gas outlet 601, and enters the cylinder 2 downwards through the second communicating pipe 8 passing through the second ring body 6;
a drain pipe is arranged on the side surface of the cylinder body 2 and is communicated with the interior of the second ring body 6, the reacted solution is discharged through the drain pipe, a three-way valve is communicated with the connecting pipe 205, so that sodium carbonate solution is added into the second cavity 11, the added solution enters the interior of the second ring body 6 through the exhaust hole 601, and excessive solution is discharged through the three-way valve, so that the liquid level surface in the second ring body 6 is higher than the bottom end surface of the first connecting pipe 7, and the flue gas and the solution are fully mixed;
in the process of mixing the flue gas and the solution, dust in the flue gas is conveniently removed, meanwhile, the inflowing flue gas is cooled, and the sulfur dioxide gas in the flue gas reacts with the sodium carbonate solution to avoid the problem that the sulfur dioxide gas enters the catalyst 20 to cause the failure of the catalyst 20.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (5)
1. The low-temperature denitration system of the sintering machine comprises a sintering machine (A) and a denitration tower (B), wherein a smoke exhaust channel of the sintering machine (A) is communicated with a smoke inlet channel of the denitration tower (B);
the denitration tower (B) comprises:
The tower body is provided with a closed cavity, and the cavity is communicated with the air inlet end and the air outlet end;
the desulfurization component is arranged in the tower body, and flue gas entering the cavity flows to the exhaust end through the desulfurization component;
the desulfurization component comprises a first ring body (4), a disc body (5) and a second ring body (6) which are sequentially arranged in the tower body from top to bottom;
the disc body (5) divides a cavity between the first ring body (4) and the second ring body (6) into a first cavity (10) and a second cavity (11);
flue gas entering the first ring body (4) enters the second ring body (6) through the first communicating pipe (7) and is subjected to desulfurization reaction with a solution in the second ring body (6);
the gas after sulfur removal enters the end of the cavity II (11) and flows to the exhaust end through the communicating pipe II (8);
the catalytic assembly is arranged in the tower body, and the discharged flue gas enters the catalytic assembly for denitration;
the tower body comprises a base (1), a cylinder body (2) and a cover body (3), wherein the cylinder body (2) is vertically arranged, the upper port of the cylinder body (2) is sealed through the cover body (3), and the lower port of the cylinder body (2) is sealed through the base (1);
An exhaust pipe (201) and an air inlet pipe (202) are communicated with the cylinder body (2), and the air inlet pipe (202) is positioned on the upper side of the exhaust pipe (201);
the ring body I (4) and the ring body II (6) are of cylinder structures with one end closed, and the opening of the installed ring body I (4) and the opening of the installed ring body II (6) face opposite directions;
A plurality of air inlets (401) are formed in the bottom surface of the first ring body (4) in an annular mode, the air inlets (401) are communicated with the first cavity (10), a plurality of air outlets (601) which are distributed in an annular mode are formed in the bottom surface of the second ring body (6), the air outlets (601) are communicated with the second cavity (11), and the second cavity (11) is communicated with a connecting pipe (205);
The opening of the second ring body (6) is closed by a sealing cover (9), a sodium carbonate solution is filled in a cavity of the second ring body (6), and the second ring body (6) is communicated with the first ring body (4) through a first communicating pipe (7);
the communication between the cavity II (11) and the cylinder body (2) is realized through the communication pipe II (8) of the ring body II (6), and the port of the communication pipe II (8) is higher than the end face of the ring body II (6);
The gas entering through the gas inlet pipe (202) enters the first cavity (10) through the gas inlet hole (401) and enters the first ring body (4), enters the second ring body (6) through the first communicating pipe (7), reacts with sodium carbonate solution to remove sulfur dioxide gas contained in the flue gas, enters the second cavity (11) through the gas outlet hole (601), and enters the cylinder (2) downwards through the second communicating pipe (8) penetrating through the second ring body (6);
an arc-shaped opening (208) is formed in the side wall of the cylinder body (2), and the arc-shaped opening (208) is communicated with a first cavity (10) and a second cavity (11) which are formed;
hinge bases (207) are arranged on two side edges of the arc-shaped opening (208), arc-shaped plates (204) are arranged on the hinge bases (207), and the two arc-shaped plates (204) are used for closing the arc-shaped opening (208) and are locked through a lock body (206);
A connecting pipe (205) is arranged on the arc-shaped plate (204).
2. The low-temperature denitration system of the sintering machine as set forth in claim 1, wherein the air inlet pipe (202) is communicated with the inside of the cylinder (2) through a step hole (2022) formed in the inner wall of the cylinder (2);
The dust removal assembly is arranged in the air inlet pipe (202) in a coaxial line, and the air outlet end of the dust removal assembly is arranged in the stepped hole (2022).
3. The low-temperature denitration system of the sintering machine, as set forth in claim 2, wherein the dust removal component comprises a pipe body (15), a first helical blade (17) and a second helical blade (18), the first helical blade (17) is arranged on the outer side of the pipe body (15), the second helical blade (18) is arranged on the inner side of the pipe body (15), a plurality of strip-shaped grooves (1501) penetrate through the side wall of the pipe body (15), and the width of the strip-shaped grooves (1501) is narrowed towards one side of the air inlet end of the pipe body (15);
The pipe body (15) is arranged in the air inlet pipe (202) in a matching way, and the air outlet end of the pipe body (15) is arranged in the step hole (2022) in a matching way;
the bearing (16) is sleeved on the outer side of the air inlet end of the pipe body (15) and is matched and installed in a port of the air inlet pipe (202);
The first spiral blade (17) is located in an annular cavity formed by the pipe body (15) and the air inlet pipe (202), a dust outlet groove (2021) is formed in the bottom side of the air inlet pipe (202), and a dust collecting groove (19) is arranged on the outer side of the dust outlet groove (2021).
4. The low-temperature denitration system of a sintering machine according to claim 3, wherein the cover body (3) is connected with a screw rod (12) extending into the cylinder body (2), and the bottom end of the screw rod (12) is positioned in the ring body I (4);
the upper side of the first ring body (4) is provided with a conical shell (13) positioned in the cylinder body (2), and the upper side surface of the screw rod (12) is attached to the inner wall of the conical shell (13);
the cover body (3) is provided with a motor (14) in transmission connection with the screw rod (12).
5. The low-temperature denitration system of a sintering machine as set forth in claim 2, wherein the catalytic assembly is a disc-shaped catalyst (20) provided with a plurality of round holes.
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| CN202211492315.3A CN115970481B (en) | 2022-11-25 | 2022-11-25 | Sintering machine low temperature denitration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211492315.3A CN115970481B (en) | 2022-11-25 | 2022-11-25 | Sintering machine low temperature denitration system |
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| CN115970481A CN115970481A (en) | 2023-04-18 |
| CN115970481B true CN115970481B (en) | 2025-07-25 |
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| CN112403232A (en) * | 2019-11-05 | 2021-02-26 | 中冶长天国际工程有限责任公司 | Process method and device for cooperatively purifying multiple pollutants in flue gas |
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| CN102512952A (en) * | 2011-11-14 | 2012-06-27 | 浙江天蓝环保技术股份有限公司 | Fluidized bed-based flue gas combined desulfurization and denitration process |
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