CN114345312A - Preparation method of carbon dioxide adsorbent - Google Patents
Preparation method of carbon dioxide adsorbent Download PDFInfo
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- CN114345312A CN114345312A CN202111611047.8A CN202111611047A CN114345312A CN 114345312 A CN114345312 A CN 114345312A CN 202111611047 A CN202111611047 A CN 202111611047A CN 114345312 A CN114345312 A CN 114345312A
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- carbon dioxide
- coal gasification
- preparation
- organic amine
- adsorbent
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 41
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 38
- 239000003463 adsorbent Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 25
- 239000003245 coal Substances 0.000 claims abstract description 21
- 238000002309 gasification Methods 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001412 amines Chemical class 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- -1 amine compounds Chemical class 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 4
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003960 organic solvent Substances 0.000 claims abstract description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract 4
- 238000007598 dipping method Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000003795 desorption Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000005470 impregnation Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 125000003277 amino group Chemical group 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000005303 weighing Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a preparation method of a carbon dioxide adsorbent which is efficient, stable, cheap and easy to obtain. The invention uses coal gasification fine slag as a carrier to load organic amine compounds such as polyethyleneimine, pentaethylenehexamine, ethanolamine and the like. The preparation raw materials comprise coal gasification slag, organic amine compounds, organic solvents such as ethanol or propanol and the like, various additives and the like. The coal gasification slag is crushed into fine slag, the coal gasification fine slag with the mass 2 to 5 times of that of the organic amine compound is weighed, various additives are added, ethanol or acetone organic solvent is added to submerge the solid, and the processes of stirring, dipping, evaporating and drying are carried out to obtain the cheap and easily-obtained high-efficiency adsorbent. The adsorbent is used for adsorbing acidic gas carbon dioxide, and the carbon dioxide is combined by amino groups in organic amine to generate a compound, so that the adsorbent is prepared from easily available raw materials, low in price, mild in preparation conditions, simple in steps, high in practicability and feasible in industrial preparation and application.
Description
Technical Field
The invention belongs to the technical field of carbon dioxide adsorption carbon capture, and particularly relates to a preparation method of a carbon dioxide adsorbent with organic amine loaded on carriers such as coal gasification fine slag and the like.
Background
In recent years, our country proposes a double-carbon target, and under the background of double carbon, the CO of high-pollution industries, especially coal utilization enterprises2The emission is regulated, so an effective measure for reducing the emission of the dioxide is necessary. The carbon dioxide adsorption and capture technology is an important emission reduction way by capturing, collecting and storing carbon dioxide, the carbon dioxide adsorption is divided into liquid adsorption and solid adsorbent adsorption, and the liquid adsorption efficiency is highHowever, it is inconvenient to recycle, and the commonly used solid adsorbent is usually a molecular sieve-type adsorbent, a metal organic framework material, etc., which are expensive and inconvenient for industrial use.
According to the invention, the coal gasification fine slag is used as a carrier by utilizing the adsorbability of the coal gasification fine slag, organic amines such as polyethyleneimine, pentaethylenehexamine and ethanolamine are loaded, so that a cheap and easily-obtained efficient adsorption carrier for adsorbing acidic gas carbon dioxide is obtained, the carbon dioxide is combined by amino groups in the organic amines to generate stable compounds, and the adsorbent is prepared from easily-obtained raw materials, low in price, mild in preparation conditions, simple in steps and feasible in large-scale preparation.
Crushing the gasified slag into fine slag, weighing a certain amount of the gasified fine slag for later use, then weighing organic amine according to one fifth to one half of the mass of the gasified fine slag, adding various additives if necessary, adding organic solvents such as ethanol and the like, dissolving the organic amine and the additives, adding the gasified fine slag for later use, stirring for 2-5h, then putting the mixture into a heating furnace, controlling the temperature to be 75 ℃, completely evaporating water, transferring the mixture into a 60 ℃ oven for drying to obtain a carbon dioxide adsorbing material
Compared with the prior art, the invention has the following advantages:
the alkalinity of organic amine, the acidity of carbon dioxide and the adsorbability of coal gasification waste residue realize the high-efficiency adsorption of carbon dioxide and show better adsorption performance;
compared with the traditional carbon dioxide adsorbent, such as a molecular sieve adsorption material, the adsorbent takes the coal gasification waste residue as a carrier, is cheap and easy to obtain, and realizes the reutilization of solid waste;
the preparation method is simple, easy to operate, convenient for industrial application, good in performance stability, capable of realizing resolution at high temperature and recycling, and economical and practical;
the high-efficiency adsorption of the carbon dioxide is realized through the polyamine, the industrial popularization and application of the carbon dioxide are possible, and the high-efficiency adsorption device has high innovativeness.
Drawings
Fig. 1 is a flow chart of a process for preparing a carbon dioxide adsorbent.
Detailed Description
Example 1: weighing 4g of polyethyleneimine, adding absolute ethyl alcohol to dissolve, and stirring until the solution is dissolved; crushing the coal gasification slag into fine slag with the diameter less than 5mm, and then adding 10g of the coal gasification fine slag to continue stirring for 3 hours; and then putting the carbon dioxide into a heating furnace, controlling the temperature to be 75 ℃, completely evaporating water, and then transferring the carbon dioxide into a 60 ℃ oven for drying to obtain the polyethyleneimine-coal gasification fine slag carbon dioxide adsorption material. Simulating industrial carbon dioxide tail gas, and performing CO by using reactor built2Adsorption experiment with CO2Volume content 20%, N2The content is 80%, T is 60 ℃, the flow rate is 40mL/min, and the adsorption is carried out for 3 h. The result shows that the adsorption capacity of each gram of adsorbent reaches 3.98mmol, carbon dioxide is adsorbed by 0.175 g, the temperature is raised at 130 ℃ after the reaction is finished, and the temperature is reduced to the adsorption temperature after the reaction is finished to continue the adsorption reaction.
Example 2: weighing 4g of ethanolamine, adding absolute ethyl alcohol to dissolve the ethanolamine, and stirring until the solution is dissolved; crushing the coal gasification slag into fine slag with the diameter less than 5mm, and then adding 10g of the coal gasification fine slag to continue stirring for 3 hours; and then putting the mixture into a heating furnace, controlling the temperature to be 75 ℃, completely evaporating water, and then transferring the mixture into a 60 ℃ oven for drying to obtain the ethanolamine-coal gasification fine slag carbon dioxide adsorption material. Simulating industrial carbon dioxide tail gas, and performing CO by using reactor built2Adsorption experiment with CO2Volume content 20%, N2The content is 80%, T is 60 ℃, the flow rate is 40mL/min, and the adsorption is carried out for 3 h. The result shows that the adsorption capacity of each gram of adsorbent reaches 4.32mmol, carbon dioxide is adsorbed by 0.19 g, the temperature is raised at 140 ℃ after the reaction is finished, and the temperature is reduced to the adsorption temperature after the reaction is finished to continue the adsorption reaction.
Example 3: weighing 4g of pentaethylenehexamine and 0.005g of nitrogen tetra-substituted phenylenediamine, adding absolute ethyl alcohol to dissolve, and stirring until the solution is dissolved; then 10g of coal gasification fine slag is added and continuously stirred for 3 hours; and then putting the carbon dioxide into a heating furnace, controlling the temperature to be 75 ℃, completely evaporating water, and then transferring the carbon dioxide into a 60 ℃ oven for drying to obtain the pentaethylenehexamine-coal gasification fine slag carbon dioxide adsorption material. Simulating industrial carbon dioxide tail gas, and performing CO by using reactor built2Adsorption experiment with CO2Volume content 20%, N2The content is 80%, T is 60 deg.C, flow rate is 40mL/min, and adsorption is carried outAnd 3 h. The result shows that the adsorption amount of each gram of adsorbent reaches 3.95mmol, 0.1738 g of carbon dioxide is adsorbed, the temperature is raised at 130 ℃ after the reaction is finished, and the temperature is reduced to the adsorption temperature after the reaction is finished to continue the adsorption reaction.
It should be noted that the above experiments or industrial operations are not limited to the specific processes, raw material ratios or methods mentioned in the examples, and may not be simply modified or replaced, and the examples are only a part of the examples of the present invention, and all other related experimental operations belong to the scope of the present invention. Any modification made within the spirit and principle of the present invention should be included within the scope of protection of the present invention.
Claims (6)
1. A preparation method of a carbon dioxide adsorbent is characterized in that organic amine compounds are loaded on industrial coal gasification fine slag through processes of stirring, dipping, evaporating and drying.
2. The preparation method of the carbon dioxide adsorbent material as claimed in claim 1, wherein the organic amine compound is organic amine such as polyethyleneimine, pentaethylenehexamine and ethanolamine.
3. The method for preparing a carbon dioxide adsorbing agent as claimed in claim 1, wherein the raw materials of the impregnation process comprise organic amine, coal gasification slag, organic solvents such as ethanol and acetone, and various additives.
4. The method for preparing a carbon dioxide adsorbing material as claimed in claim 1, wherein the weight of the coal gasification waste residue is 2 to 5 times of that of the organic amine in the proportion of the impregnating raw materials.
5. The preparation method of the carbon dioxide adsorbent according to claim 1, wherein the temperature of the evaporation process is 60-100 ℃.
6. The carbon dioxide adsorbent according to claim 1, wherein the temperature-rising desorption temperature of the adsorbent is 60 to 160 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111611047.8A CN114345312A (en) | 2021-12-28 | 2021-12-28 | Preparation method of carbon dioxide adsorbent |
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|---|---|---|---|
| CN202111611047.8A CN114345312A (en) | 2021-12-28 | 2021-12-28 | Preparation method of carbon dioxide adsorbent |
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| CN114345312A true CN114345312A (en) | 2022-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815307A (en) * | 2022-12-27 | 2023-03-21 | 宁夏大学 | Method for efficiently separating carbon smoke in coal gasification fine slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263534A1 (en) * | 2007-11-08 | 2010-10-21 | The University Of Akron | Amine absorber for carbon dioxide capture and processes for making and using the same |
| CN106944018A (en) * | 2017-04-17 | 2017-07-14 | 湖南大学 | A kind of polyethyleneimine-modified meerschaum adsorbent and its preparation method and application |
| CN107081140A (en) * | 2017-05-23 | 2017-08-22 | 西安交通大学 | A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof |
| CN110548495A (en) * | 2019-08-29 | 2019-12-10 | 宁波诺丁汉新材料研究院有限公司 | Preparation method of adsorbent for capturing post-combustion carbon and adsorbent |
| CN113713778A (en) * | 2021-10-17 | 2021-11-30 | 盐城师范学院 | For CO2Preparation method of captured alcohol amine modified fly ash adsorbent |
-
2021
- 2021-12-28 CN CN202111611047.8A patent/CN114345312A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263534A1 (en) * | 2007-11-08 | 2010-10-21 | The University Of Akron | Amine absorber for carbon dioxide capture and processes for making and using the same |
| CN106944018A (en) * | 2017-04-17 | 2017-07-14 | 湖南大学 | A kind of polyethyleneimine-modified meerschaum adsorbent and its preparation method and application |
| CN107081140A (en) * | 2017-05-23 | 2017-08-22 | 西安交通大学 | A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof |
| CN110548495A (en) * | 2019-08-29 | 2019-12-10 | 宁波诺丁汉新材料研究院有限公司 | Preparation method of adsorbent for capturing post-combustion carbon and adsorbent |
| CN113713778A (en) * | 2021-10-17 | 2021-11-30 | 盐城师范学院 | For CO2Preparation method of captured alcohol amine modified fly ash adsorbent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815307A (en) * | 2022-12-27 | 2023-03-21 | 宁夏大学 | Method for efficiently separating carbon smoke in coal gasification fine slag |
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Application publication date: 20220415 |