CN111229159A - Ethylene adsorbent and preparation method thereof - Google Patents
Ethylene adsorbent and preparation method thereof Download PDFInfo
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- CN111229159A CN111229159A CN202010041986.2A CN202010041986A CN111229159A CN 111229159 A CN111229159 A CN 111229159A CN 202010041986 A CN202010041986 A CN 202010041986A CN 111229159 A CN111229159 A CN 111229159A
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
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- B01J20/165—Natural alumino-silicates, e.g. zeolites
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
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Abstract
The invention relates to the technical field of adsorbents, and discloses an ethylene adsorbent which comprises the following components in parts by weight: 56-80 parts of silicon dioxide, 11-14 parts of aluminum oxide, 11-20 parts of diatom, 13-19 parts of activated carbon, 30-40 parts of zeolite, 2-5 parts of ferric oxide, 1-6 parts of magnesium oxide, 1-4 parts of calcium oxide and 19-27 parts of water.
Description
Technical Field
The invention relates to the technical field of adsorbents, and particularly relates to an ethylene adsorbent and a preparation method thereof.
Background
Ethylene is a compound consisting of two carbon atoms and four hydrogen atoms. The two carbon atoms are connected by a double bond. Ethylene is present in certain tissues and organs of plants and is converted from methionine under sufficient oxygen supply;
the alkene adsorbent in the prior art has the defects of insufficient stability and poor adsorption effect on ethylene.
Disclosure of Invention
The invention provides an ethylene adsorbent and a preparation method thereof, which aim to solve the defects of insufficient stability and poor ethylene adsorption effect in the prior art.
The invention provides an ethylene adsorbent and a preparation method thereof, wherein the ethylene adsorbent comprises the following components in parts by weight: 56-80 parts of silicon dioxide, 11-14 parts of alumina, 11-20 parts of diatom, 13-19 parts of activated carbon, 30-40 parts of zeolite, 2-5 parts of ferric oxide, 1-6 parts of magnesium oxide, 1-4 parts of calcium oxide and 19-27 parts of water.
Preferably, the components are specifically as follows according to the weight ratio: 65-70 parts of silicon dioxide, 12-13 parts of alumina, 13-18 parts of diatom, 14-16 parts of activated carbon and 33-38 parts of zeolite.
Preferably, the components are specifically as follows according to the weight ratio: 3-4 parts of ferric oxide, 2-5 parts of magnesium oxide, 2-3 parts of calcium oxide and 21-24 parts of water.
The invention also provides a preparation method of the ethylene adsorbent, which is characterized by comprising the following specific steps:
s1, respectively placing diatoms, zeolite and activated carbon in different containers, simultaneously separately placing silicon dioxide, aluminum oxide, ferric oxide, magnesium oxide, calcium oxide and water in a closed container, grinding and mashing the raw materials in the three containers, and mixing multiple raw materials;
s2, sealing the container containing the activated carbon powder, isolating the activated carbon powder in the container from outside air, and heating the container in water bath at the temperature of 50-60 ℃ for 45-70 minutes;
s3, after the step S2 is completed, opening a notch in the sealed container, and fully contacting outside air with gas in the container to enable the gas and the surfaces of the activated carbon particles to generate oxidation reaction, so that the surfaces of the activated carbon are corroded, a structure with developed micropores is generated on the surfaces of the activated carbon, and meanwhile, the temperature of the activated carbon is increased to 400-500 ℃, so that organic matters on the surfaces of the activated carbon are removed;
s4, cooling the activated carbon particles after the step S3 is completed;
s5, mixing the treated activated carbon particles and the raw materials in the other two containers, namely fully mixing the raw materials, putting the mixed raw materials in a low-temperature water bath at 25-150 ℃, preheating for 15-20 minutes, increasing the temperature to be within the range of 300 ℃ of 150 ℃ and controlling the internal pressure of the container to be within the range of 1-10Mpa to prepare powder;
and S6, storing the finished product after the step S5 is finished.
Preferably, the cooling process in step S4 includes the following steps:
n1, cooling first stage: taking the heated raw materials out of the container, and cooling, wherein the cooling descending speed of the raw materials is controlled at 10-15 ℃ per hour;
n2, when the temperature of the raw material reaches 200-300 ℃, cooling the raw material in the second stage, wherein the cooling descending speed is controlled to be 30-35 ℃ per hour;
after the steps of N3, N1 and N2 were completed, a third stage of cooling treatment was performed.
Preferably, the cooling treatment in the third stage specifically comprises that when the temperature reaches 150-.
Preferably, the step S6 of storing the finished product specifically includes injecting the raw materials into a closed container, and controlling the external temperature to be 15-21 ℃ during storage.
The ethylene adsorbent and the preparation method thereof provided by the invention have the characteristic of environmental protection, the materials are convenient to obtain, meanwhile, the ethylene adsorbent has a good adsorption effect on ethylene molecular groups and alkaline molecular groups, the surfaces of finished products form uniform micropore states, and the adsorption effect is increased.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
The ethylene adsorbent comprises the following components in percentage by weight: 56 parts of silicon dioxide, 11 parts of aluminum oxide, 11 parts of diatom, 13 parts of activated carbon, 30 parts of zeolite, 2 parts of ferric oxide, 1 part of magnesium oxide, 1 part of calcium oxide and 19 parts of water.
The invention also provides a preparation method of the ethylene adsorbent, which comprises the following specific steps:
s1, respectively placing diatoms, zeolite and activated carbon in different containers, simultaneously separately placing silicon dioxide, aluminum oxide, ferric oxide, magnesium oxide, calcium oxide and water in a closed container, grinding and mashing the raw materials in the three containers, and mixing multiple raw materials;
s2, sealing the container containing the activated carbon powder, isolating the activated carbon powder in the container from outside air, and heating the container in a water bath at the temperature of 50 ℃ for 45 minutes;
s3, after the step S2 is completed, opening a notch in the sealed container, and fully contacting outside air with gas in the container to enable the gas to generate oxidation reaction with the surface of the activated carbon particles to corrode the surface of the activated carbon, so that a structure with developed micropores is generated on the surface of the activated carbon, and meanwhile, the temperature of the activated carbon is increased to 400 ℃, and organic matters on the surface of the activated carbon are removed;
s4, after the step S3 is completed, cooling the activated carbon particles, wherein the cooling treatment specifically comprises the following steps:
n1, cooling first stage: taking the heated raw materials out of the container, and cooling the raw materials, wherein the cooling descending speed of the raw materials is controlled at 10 ℃ per hour;
n2, when the temperature of the raw material reaches 200 ℃, cooling the raw material in the second stage, wherein the cooling descending speed is controlled at 30 ℃ per hour;
and after the N3, the N1 and the N2 are completed, cooling treatment of a third stage is carried out, wherein the cooling treatment of the third stage specifically comprises that when the temperature reaches 150 ℃, the cooling descending speed is controlled at 50 ℃ per hour.
S5, mixing the treated activated carbon particles and the raw materials in the other two containers, namely fully mixing the raw materials, putting the mixed raw materials in a low-temperature water bath at the temperature of 25 ℃, preheating for 15 minutes, increasing the temperature to be in the range of 150 ℃, and controlling the internal pressure of the container to be in the range of 1Mpa to prepare powder;
and S6, storing the finished product after the step S5 is finished, wherein the storage of the finished product specifically comprises the steps of injecting the raw materials into a closed container, and controlling the external temperature to be 15 ℃ during storage.
The invention has good adsorption effect on ethylene molecular groups and alkaline molecular groups, and the surface of a finished product forms a uniform micropore state, thereby increasing the adsorption effect.
Example 2
The ethylene adsorbent comprises the following components in percentage by weight: 70 parts of silicon dioxide, 12 parts of aluminum oxide, 15 parts of diatom, 16 parts of activated carbon, 35 parts of zeolite, 4 parts of ferric oxide, 3 parts of magnesium oxide, 2 parts of calcium oxide and 22 parts of water.
The invention also provides a preparation method of the ethylene adsorbent, which comprises the following specific steps:
s1, respectively placing diatoms, zeolite and activated carbon in different containers, simultaneously separately placing silicon dioxide, aluminum oxide, ferric oxide, magnesium oxide, calcium oxide and water in a closed container, grinding and mashing the raw materials in the three containers, and mixing multiple raw materials;
s2, sealing the container containing the activated carbon powder, isolating the activated carbon powder in the container from outside air, and heating the container in a water bath at the temperature of 55 ℃ for 60 minutes;
s3, after the step S2 is completed, opening a notch in the sealed container, and fully contacting outside air with gas in the container to enable the gas to generate oxidation reaction with the surface of the activated carbon particles to corrode the surface of the activated carbon, so that a structure with developed micropores is generated on the surface of the activated carbon, and meanwhile, the temperature of the activated carbon is increased to 450 ℃, and organic matters on the surface of the activated carbon are removed;
s4, after the step S3 is completed, cooling the activated carbon particles, wherein the cooling treatment specifically comprises the following steps:
n1, cooling first stage: taking the heated raw materials out of the container, and cooling the raw materials, wherein the cooling descending speed of the raw materials is controlled at 12 ℃ per hour;
n2, when the temperature of the raw material reaches 250 ℃, cooling the raw material in the second stage, wherein the cooling descending speed is controlled at 32 ℃ per hour;
and after the N3, the N1 and the N2 are completed, cooling treatment of a third stage is carried out, wherein the cooling treatment of the third stage specifically comprises that when the temperature reaches 160 ℃, the cooling descending speed is controlled to be 53 ℃ per hour.
S5, mixing the treated activated carbon particles and the raw materials in the other two containers, namely fully mixing the raw materials, putting the mixed raw materials in a low-temperature water bath at 100 ℃, preheating for 17 minutes, increasing the temperature to 180 ℃, and controlling the internal pressure of the container to be within 5Mpa to prepare powder;
and S6, storing the finished product after the step S5 is finished, wherein the storage of the finished product specifically comprises the steps of injecting the raw materials into a closed container, and controlling the external temperature to be 17 ℃ during storage.
The invention has good adsorption effect on ethylene molecular groups and alkaline molecular groups, and the surface of a finished product forms a uniform micropore state, thereby increasing the adsorption effect.
Example 3
The ethylene adsorbent comprises the following components in percentage by weight: 80 parts of silicon dioxide, 14 parts of alumina, 20 parts of diatom, 19 parts of activated carbon, 40 parts of zeolite, 5 parts of ferric oxide, 6 parts of magnesium oxide, 4 parts of calcium oxide and 27 parts of water.
The invention also provides a preparation method of the ethylene adsorbent, which comprises the following specific steps:
s1, respectively placing diatoms, zeolite and activated carbon in different containers, simultaneously separately placing silicon dioxide, aluminum oxide, ferric oxide, magnesium oxide, calcium oxide and water in a closed container, grinding and mashing the raw materials in the three containers, and mixing multiple raw materials;
s2, sealing the container containing the activated carbon powder, isolating the activated carbon powder in the container from outside air, and heating the container in a water bath at the temperature of 60 ℃ for 70 minutes;
s3, after the step S2 is completed, opening a notch in the sealed container, and fully contacting outside air with gas in the container to enable the gas to generate oxidation reaction with the surface of the activated carbon particles to corrode the surface of the activated carbon, so that a structure with developed micropores is generated on the surface of the activated carbon, and meanwhile, the temperature of the activated carbon is increased to 500 ℃, and organic matters on the surface of the activated carbon are removed;
s4, after the step S3 is completed, cooling the activated carbon particles, wherein the cooling treatment specifically comprises the following steps:
n1, cooling first stage: taking the heated raw materials out of the container, and cooling the raw materials, wherein the cooling descending speed of the raw materials is controlled at 15 ℃ per hour;
n2, when the temperature of the raw material reaches 300 ℃, cooling the raw material in the second stage, wherein the cooling descending speed is controlled at 35 ℃ per hour;
and after the N3, the N1 and the N2 are completed, cooling treatment of a third stage is carried out, wherein the cooling treatment of the third stage specifically comprises that when the temperature reaches 200 ℃, the cooling descending speed is controlled at 60 ℃ per hour.
S5, mixing the treated activated carbon particles and the raw materials in the other two containers, namely fully mixing the raw materials, putting the containers of the mixed raw materials in a low-temperature water bath at the temperature of 150 ℃, preheating for 20 minutes, increasing the temperature to be within 300 ℃, and controlling the internal pressure of the containers to be within 10Mpa to prepare powder;
and S6, storing the finished product after the step S5 is finished, wherein the storage of the finished product specifically comprises the steps of injecting the raw materials into a closed container, and controlling the outside temperature to be 21 ℃ during storage.
The invention has good adsorption effect on ethylene molecular groups and alkaline molecular groups, and the surface of a finished product forms a uniform micropore state, thereby increasing the adsorption effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The ethylene adsorbent is characterized by comprising the following components in percentage by weight: 56-80 parts of silicon dioxide, 11-14 parts of alumina, 11-20 parts of diatom, 13-19 parts of activated carbon, 30-40 parts of zeolite, 2-5 parts of ferric oxide, 1-6 parts of magnesium oxide, 1-4 parts of calcium oxide and 19-27 parts of water.
2. The ethylene adsorbent according to claim 1, wherein the components are most preferably as follows by weight: 65-70 parts of silicon dioxide, 12-13 parts of alumina, 13-18 parts of diatom, 14-16 parts of activated carbon and 33-38 parts of zeolite.
3. The ethylene adsorbent according to claim 1, wherein the components are most preferably as follows by weight: 3-4 parts of ferric oxide, 2-5 parts of magnesium oxide, 2-3 parts of calcium oxide and 21-24 parts of water.
4. A method for preparing the ethylene adsorbent according to claims 1-3, characterized by comprising the following steps:
s1, respectively placing diatoms, zeolite and activated carbon in different containers, simultaneously separately placing silicon dioxide, aluminum oxide, ferric oxide, magnesium oxide, calcium oxide and water in a closed container, grinding and mashing the raw materials in the three containers, and mixing multiple raw materials;
s2, sealing the container containing the activated carbon powder, isolating the activated carbon powder in the container from outside air, and heating the container in water bath at the temperature of 50-60 ℃ for 45-70 minutes;
s3, after the step S2 is completed, opening a notch in the sealed container, and fully contacting outside air with gas in the container to enable the gas and the surfaces of the activated carbon particles to generate oxidation reaction, so that the surfaces of the activated carbon are corroded, a structure with developed micropores is generated on the surfaces of the activated carbon, and meanwhile, the temperature of the activated carbon is increased to 400-500 ℃, so that organic matters on the surfaces of the activated carbon are removed;
s4, cooling the activated carbon particles after the step S3 is completed;
s5, mixing the treated activated carbon particles and the raw materials in the other two containers, namely fully mixing the raw materials, putting the mixed raw materials in a low-temperature water bath at 25-150 ℃, preheating for 15-20 minutes, increasing the temperature to be within the range of 300 ℃ of 150 ℃ and controlling the internal pressure of the container to be within the range of 1-10Mpa to prepare powder;
and S6, storing the finished product after the step S5 is finished.
5. The method according to claim 4, wherein the cooling treatment in the step S4 specifically comprises the following steps:
n1, cooling first stage: taking the heated raw materials out of the container, and cooling, wherein the cooling descending speed of the raw materials is controlled at 10-15 ℃ per hour;
n2, when the temperature of the raw material reaches 200-300 ℃, cooling the raw material in the second stage, wherein the cooling descending speed is controlled to be 30-35 ℃ per hour;
after the steps of N3, N1 and N2 were completed, a third stage of cooling treatment was performed.
6. The method as claimed in claim 5, wherein the cooling treatment in the third stage comprises cooling at a temperature of 150-200 ℃ and a cooling down rate of 50-60 ℃ per hour.
7. The method according to claim 4, wherein the step S6 of storing the finished product comprises filling the raw material into a closed container, and controlling the temperature of the outside environment to be 15-21 ℃ during storage.
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| EP0433677A1 (en) * | 1989-11-22 | 1991-06-26 | Calgon Carbon Corporation | Removal of mercury from liquid hydrocarbons |
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