CN113398658A - Filter aid for reducing water content of carbon dioxide crystallization filter cake trapped by nanofiltration seawater - Google Patents
Filter aid for reducing water content of carbon dioxide crystallization filter cake trapped by nanofiltration seawater Download PDFInfo
- Publication number
- CN113398658A CN113398658A CN202110700477.0A CN202110700477A CN113398658A CN 113398658 A CN113398658 A CN 113398658A CN 202110700477 A CN202110700477 A CN 202110700477A CN 113398658 A CN113398658 A CN 113398658A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- water content
- filter
- filter cake
- filter aid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 22
- 239000012065 filter cake Substances 0.000 title claims abstract description 22
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 20
- 239000013535 sea water Substances 0.000 title claims abstract description 19
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000002425 crystallisation Methods 0.000 title claims abstract description 15
- 230000008025 crystallization Effects 0.000 title claims abstract description 15
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 14
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 14
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 8
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical group CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Carbon And Carbon Compounds (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a filter aid for reducing water content of a carbon dioxide crystallization filter cake trapped by nanofiltration seawater, which is characterized by being prepared by mixing 80-95 wt% of alkylphenol polyoxyethylene ether and 5-20 wt% of polycarboxylate. Wherein the alkylphenol polyoxyethylene ether is nonylphenol polyoxyethylene ether. The filter aid can reduce the water content of carbon dioxide crystal filter cakes trapped by nanofiltration seawater and can improve the filtering speed.
Description
Technical Field
The invention relates to the field of filter aids, in particular to a filter aid for a carbon dioxide trapping crystal filter cake in nanofiltration of seawater.
Background
The greenhouse effect is the biggest environmental problem facing all mankind in the 21 st century, who consumes CO produced by fossil fuel in energy system2Is the most important substance causing global warming. In China, the economic construction has attracted attention in recent years as the most popular and most developing country in the world. But with the development of economy and the growing population, the demand for energy is increasing.
From the past, CO2The separation and the capture of the natural gas are regarded as the most economical and feasible methods for reducing greenhouse gas emission, slowing down global warming and purifying the natural gas on a large scale in the future. From the development of various separation methods, the absorption method is most widely used and has the strongest applicability. Other separation methods such as low temperature separation process, pressure swing adsorption process, etc. have been industrialized, but have faced the problems of complex process, high energy consumption, etc., and have limitationsThe practical application and development are realized. The membrane separation has the advantages of simple operation, high efficiency, energy conservation and the like, and is successfully applied to the aspects of oil refining tail gas separation and the like, but the large-scale industrialization is not realized due to the problems of low separation efficiency and the like. Ionic liquid absorption and hydrate method for separating CO2The method has good application prospect as a green separation method which has no pollution to the environment and saves energy. But the method faces huge challenges in reducing the production cost of the ionic liquid and developing a suitable hydrate accelerator to reduce the hydrate generation pressure of a system, increase the hydrate generation rate and the like
The step of collecting carbon dioxide by the nanofiltration seawater is to collect carbon dioxide in flue gas by utilizing high-concentration calcium and magnesium ions in the seawater to obtain calcium carbonate, magnesium carbonate and the like, and then to concentrate, crystallize and separate solid and liquid to be used as important components of agricultural fertilizers to realize carbon dioxide collection and resource utilization. Since the reduction of water in the filter cake determines the utilization value of the crystal, the research on the reduction of water in the carbon dioxide crystal filter cake collected by the nanofiltration seawater is an important subject, and relevant documents are not reported.
Disclosure of Invention
Aiming at the problems that the carbon dioxide crystallization filter cake captured by the nanofiltration seawater is difficult to filter and the water content of the filter cake is high, the invention considers the influence of different chemical filter aids and proper compounding on the dehydration and filtration-aiding performance of the crystallization filter cake, and on the basis, the invention provides the filter aid for reducing the water content of the carbon dioxide crystallization filter cake captured by the nanofiltration seawater. The filter aid of the invention has the advantages of good filter aid effect, low cost, high filtering speed, low water content of crystallized filter cakes and the like.
The filter aid for reducing water content of carbon dioxide crystallization filter cakes trapped by nanofiltration seawater is characterized by being prepared by mixing 80-95 wt% of alkylphenol polyoxyethylene ether and 5-20 wt% of polycarboxylate.
Wherein the alkylphenol polyoxyethylene ether is nonylphenol polyoxyethylene ether.
The filter aid of the invention can not only reduce the water content of the carbon dioxide crystallization filter cake trapped by the nanofiltration seawater, but also improve the filtration speed.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited to the specific examples. All the raw materials of the invention, namely the nonylphenol polyoxyethylene ether and the polycarboxylate, are directly purchased.
Example 1
The filter aid for reducing the water content of the carbon dioxide crystallization filter cake captured by the nanofiltration seawater comprises the following raw materials in percentage by weight: 80% of nonylphenol polyoxyethylene ether and 20% of polycarboxylate.
Example 2
The filter aid for reducing the water content of the carbon dioxide crystallization filter cake captured by the nanofiltration seawater comprises the following raw materials in percentage by weight: 85% of nonylphenol polyoxyethylene ether and 15% of polycarboxylate.
Example 3
The filter aid for reducing the water content of the carbon dioxide crystallization filter cake captured by the nanofiltration seawater comprises the following raw materials in percentage by weight: 95% of nonylphenol polyoxyethylene ether and 5% of polycarboxylate.
Example 4
The filter aid for reducing the water content of the carbon dioxide crystallization filter cake captured by the nanofiltration seawater comprises the following raw materials in percentage by weight: 90% of nonylphenol polyoxyethylene ether and 10% of polycarboxylate.
The filter aid obtained in the embodiments 1 to 4 is used for capturing carbon dioxide crystallization filter cake by nanofiltration seawater in an experiment according to two thirds of the recommended dosage of the filter aid, and the results of the water content of the filter cake and the filtering time are as follows:
Claims (2)
1. the filter aid for reducing water content of carbon dioxide crystallization filter cakes trapped by nanofiltration seawater is characterized by being prepared by mixing 80-95 wt% of alkylphenol polyoxyethylene ether and 5-20 wt% of polycarboxylate.
2. The filter aid for reducing the water content of a carbon dioxide crystallization filter cake captured by nanofiltration seawater according to claim 1, is characterized in that: the alkylphenol polyoxyethylene ether is nonylphenol polyoxyethylene ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110700477.0A CN113398658A (en) | 2021-06-23 | 2021-06-23 | Filter aid for reducing water content of carbon dioxide crystallization filter cake trapped by nanofiltration seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110700477.0A CN113398658A (en) | 2021-06-23 | 2021-06-23 | Filter aid for reducing water content of carbon dioxide crystallization filter cake trapped by nanofiltration seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113398658A true CN113398658A (en) | 2021-09-17 |
Family
ID=77682755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110700477.0A Withdrawn CN113398658A (en) | 2021-06-23 | 2021-06-23 | Filter aid for reducing water content of carbon dioxide crystallization filter cake trapped by nanofiltration seawater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113398658A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032806A (en) * | 2006-03-06 | 2007-09-12 | 张捷平 | Method of recycling cutting suspension |
| CN103889904A (en) * | 2011-10-19 | 2014-06-25 | 亚什兰许可和知识产权有限公司 | Composition comprising a non-ionic surfactant and an ionic polymer |
-
2021
- 2021-06-23 CN CN202110700477.0A patent/CN113398658A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032806A (en) * | 2006-03-06 | 2007-09-12 | 张捷平 | Method of recycling cutting suspension |
| CN103889904A (en) * | 2011-10-19 | 2014-06-25 | 亚什兰许可和知识产权有限公司 | Composition comprising a non-ionic surfactant and an ionic polymer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210917 |
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| WW01 | Invention patent application withdrawn after publication |