CN101857226A - Technology for producing carbon dioxide by propylene carbonate - Google Patents
Technology for producing carbon dioxide by propylene carbonate Download PDFInfo
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- CN101857226A CN101857226A CN201010210188A CN201010210188A CN101857226A CN 101857226 A CN101857226 A CN 101857226A CN 201010210188 A CN201010210188 A CN 201010210188A CN 201010210188 A CN201010210188 A CN 201010210188A CN 101857226 A CN101857226 A CN 101857226A
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- propylene carbonate
- tower
- technology
- carbon dioxide
- producing carbon
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Abstract
The invention discloses a technology for producing carbon dioxide by propylene carbonate, which is formed by mainly assembling a separator, an absorption tower, a solution pump with a turbine, a propylene carbonate cooling tower, a flash tank, an ordinary pressure desorption vacuum desorption stripping tower, an air blower, a propylene carbonate circulation tower, an air extractor, a propylene carbonate recovery tower, a dilute circulation groove and a dilute pump into a whole through connection pipelines according to system functions thereof. The technology has reasonable design and convenient use, and is a desired technology for recovering and preparing the carbon dioxide.
Description
Affiliated technical field
The present invention relates to a kind of technology of extracting the collection production method, particularly a kind of producing carbon dioxide by propylene carbonate of the carbonic acid gas that discharges in the Industrial processes, be suitable for collecting the production carbonic acid gas.
Background technology
At present, the CO that discharges because of combustion of fossil fuels global every year
2Reach about 20,000,000,000 t, by the CO of fossil energy burning generation
2Total amount accounts for 82% of greenhouse gases total amount.Along with the concern of countries in the world to the global greenhouse effect problem, CO
2Reduce discharging and cause global attention day by day.Reclaim CO
2Be not only and alleviate CO
2The most direct effective means of discharging crisis can also reduce production costs, and owing to the demand of Economic development to industrial carbon dioxide constantly increases, this method will be brought considerable economic.But it is not perfect to collect production technology, and problem is many, therefore, has brought bigger trouble to the user.
Summary of the invention
Problem to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of technology of producing carbon dioxide by propylene carbonate is provided.This technology not only technology is reasonable, and preparation is simple, and good product quality, and has solved problem of environmental pollution.
The technical solution used in the present invention is: separator, absorption tower, band turbine solution pump, propylene carbonate cooling tower, flash drum, normal pressure desorb vacuum desorption stripping tower, air-blaster, propylene carbonate recycle column, vacuum fan, propylene carbonate recovery tower, thin liquid circulation groove, thin liquid pump are assembled into one by connection line by its system function and constitute.
During use, the technology of the present invention device is connected in the Carbon emission full scale plant, absorption pressure is 0.98-2.7MPa.Solvent is to CO
2Solubleness is very high, and carbon steel is not corroded, and contains N
2, H
2And CO
2Conversion gas in the absorption tower, contact unabsorbed N with the propylene carbonate liquid countercurrent
2, H
2Gas absorbs CO through separating and washing laggard vacuum fan
2After rich solution, through entering the intermediate flash groove after the decompression of turbine recovered energy, after washing, reclaim through steam, the solution that goes out flash drum enters the normal pressure stripping stage, at this CO that emits
2Remove to make urea or do other purposes, in order to reclaim more CO
2, solution proceeds to down joint vacuum desorption section and reclaims CO
2, final solvent enters normal pressure desorb vacuum desorption stripping tower, and the air of sending into air-blaster in normal pressure desorb vacuum desorption stripping tower bottom carries out stripping, and stripping gas is emptying after washing.
Propylene carbonate is to reclaim CO
2The major equipment absorption tower and the packing tower of normal pressure desorb vacuum desorption stripping tower, plastics Pall ring or Haier's ring that filler is made with Reinforced Polypropylene, the packed height on absorption tower is generally 18m, normal pressure desorb vacuum desorption stripping tower packed height is generally 15m.Flash drum with horizontal or vertical all can, the groove inner-use clapboard separately, about 60s of solution residence time in flash drum.Adopt that the material of major equipment all is a plain carbon stool behind the preparation method of the present invention, inwall is not used coating, and because of propylene carbonate (carbon third) is an excellent solvent, general coating all is dissolved in carbon third.The thin liquid corrodibility of carbon third is bigger, reclaims propylene carbonate recycle column, propylene carbonate recovery tower and the pipeline of carbon third and all will make of stainless steel, and the thin liquid pump also need be selected stainless steel for use.Facility investment reduces greatly, and is reliable, and novel process can drive Carbon emission enterprise and reclaim the reliability in the industry and the Sustainable development of recycling economy.
The invention has the beneficial effects as follows, reasonable in design, easy to use, be that the ideal carbon dioxide recovery prepares production technology.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Accompanying drawing number is: 1, separator, 2, the absorption tower, 3, band turbine solution pump, 4, propylene carbonate cooling tower, 5, flash drum, 6, normal pressure desorb vacuum desorption stripping tower, 7, air-blaster, 8, propylene carbonate recycle column, 9, vacuum fan, 10, the propylene carbonate recovery tower, 11, the thin liquid circulation groove, 12, thin liquid pump, 13, connection line.
Embodiment
With reference to Fig. 1, separator (1), absorption tower (2), band turbine solution pump (3), propylene carbonate cooling tower (4), flash drum (5), normal pressure desorb vacuum desorption stripping tower (6), air-blaster (7), propylene carbonate recycle column (8), vacuum fan (9), propylene carbonate recovery tower (10), thin liquid circulation groove (11), thin liquid pump (12) are assembled into one by connection line (13) by its system function and constitute.
During use, the technology of the present invention device is connected in the Carbon emission full scale plant, absorption pressure is 0.98-2.7MPa.Solvent is to CO
2Solubleness is very high, and carbon steel is not corroded, and contains N
2, H
2And CO
2Conversion gas in absorption tower (2), contact with the propylene carbonate liquid countercurrent, unabsorbed N2, H2 gas absorb CO through separating and washing laggard vacuum fan (9)
2After rich solution, through entering intermediate flash groove (5) after the decompression of turbine recovered energy, after washing, reclaim through steam, the solution that goes out flash drum (5) enters the normal pressure stripping stage, at this CO that emits
2Remove to make urea or do other purposes, in order to reclaim more CO
2, solution proceeds to down joint vacuum desorption section and reclaims CO
2, final solvent enters normal pressure desorb vacuum desorption stripping tower (6), and the air of sending into air-blaster (7) in normal pressure desorb vacuum desorption stripping tower (6) bottom carries out stripping, and stripping gas is emptying after washing.
Propylene carbonate is to reclaim CO
2Major equipment absorption tower (2) and the packing tower of normal pressure desorb vacuum desorption stripping tower (6), plastics Pall ring or Haier's ring that filler is made with Reinforced Polypropylene, the packed height on absorption tower (2) is generally 18m, and normal pressure desorb vacuum desorption stripping tower (6) packed height is generally 15m.Flash drum (5) with horizontal or vertical all can, the groove inner-use clapboard separately, about 60s of solution residence time in flash drum.Adopt that the material of major equipment all is a plain carbon stool behind the preparation method of the present invention, inwall is not used coating, and because of propylene carbonate (carbon third) is an excellent solvent, general coating all is dissolved in carbon third.The thin liquid corrodibility of carbon third is bigger, reclaims propylene carbonate recycle column (8), propylene carbonate recovery tower (10) and the pipeline of carbon third and all will make of stainless steel, and thin liquid pump (12) also need be selected stainless steel for use.Facility investment reduces greatly, and is reliable, and novel process can drive Carbon emission enterprise and reclaim the reliability in the industry and the Sustainable development of recycling economy.
Its advantage is the product yield height, is best suited for to reclaim carbon dioxide content in the unstripped gas in 8%-30%, other impurity contents and kind many occasion again. Solvent Physical Absorption method be utilize carbon dioxide and other gases in a certain solution different solubility and the method for separating, increase in pressurized conditions carbon dioxide solubility in carbonic allyl ester solution, increase in the solubility of cooling conditions carbon dioxide in solution, utilize these conditions from gaseous mixture, to separate carbon dioxide, operating also more conveniently, is the desirable technique that carbon dioxide recovery is produced.
Claims (1)
1. the technology of a producing carbon dioxide by propylene carbonate, it is characterized in that: separator, absorption tower, band turbine solution pump, propylene carbonate cooling tower, flash drum, normal pressure desorb vacuum desorption stripping tower, air-blaster, propylene carbonate recycle column, vacuum fan, propylene carbonate recovery tower, thin liquid circulation groove, thin liquid pump are assembled into one by connection line by its system function and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010210188A CN101857226A (en) | 2010-06-28 | 2010-06-28 | Technology for producing carbon dioxide by propylene carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010210188A CN101857226A (en) | 2010-06-28 | 2010-06-28 | Technology for producing carbon dioxide by propylene carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101857226A true CN101857226A (en) | 2010-10-13 |
Family
ID=42943423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010210188A Pending CN101857226A (en) | 2010-06-28 | 2010-06-28 | Technology for producing carbon dioxide by propylene carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101857226A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395823A (en) * | 2016-09-08 | 2017-02-15 | 四川省曌天科技有限公司 | Method and equipment for preparing dry ice by absorbing carbon dioxide in air |
| CN108012532A (en) * | 2015-08-19 | 2018-05-08 | 卡萨尔公司 | Transformation is used for the method for the CO2 removings workshop section for purifying hydrogen-containing gas |
| CN114317037A (en) * | 2021-12-31 | 2022-04-12 | 唐山中溶科技有限公司 | Method for preparing hydrogen from coke oven gas by utilizing decarbonization liquid regeneration through decomposition gas |
-
2010
- 2010-06-28 CN CN201010210188A patent/CN101857226A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 《中氮肥》 19891231 徐逢源 江西氨厂改产尿素工程中采用碳酸丙烯酯脱碳装置的设计技术总结 第45-46页，四，江西氨厂碳酸丙烯酯脱碳工艺流程，碳酸丙烯酯脱二氧化碳工艺流程图 1 , 第2期 2 * |
| 《化工设计通讯》 19910930 杜菊 二氧化碳脱除工艺技术 第10-12页，图4 1 第17卷, 第3期 2 * |
| 《化工设计通讯》 19940930 范武成 碳丙脱碳的工艺改进 第26-28页 1 第20卷, 第3期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012532A (en) * | 2015-08-19 | 2018-05-08 | 卡萨尔公司 | Transformation is used for the method for the CO2 removings workshop section for purifying hydrogen-containing gas |
| CN108012532B (en) * | 2015-08-19 | 2021-08-20 | 卡萨尔公司 | Method for modifying CO2 removal section for purifying hydrogen-containing gas |
| CN106395823A (en) * | 2016-09-08 | 2017-02-15 | 四川省曌天科技有限公司 | Method and equipment for preparing dry ice by absorbing carbon dioxide in air |
| CN114317037A (en) * | 2021-12-31 | 2022-04-12 | 唐山中溶科技有限公司 | Method for preparing hydrogen from coke oven gas by utilizing decarbonization liquid regeneration through decomposition gas |
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| PB01 | Publication | ||
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Open date: 20101013 |