CN101792139A - Method for recovering CO2 - Google Patents
Method for recovering CO2 Download PDFInfo
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- CN101792139A CN101792139A CN201010105776A CN201010105776A CN101792139A CN 101792139 A CN101792139 A CN 101792139A CN 201010105776 A CN201010105776 A CN 201010105776A CN 201010105776 A CN201010105776 A CN 201010105776A CN 101792139 A CN101792139 A CN 101792139A
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- gas
- combustion
- gases
- oxygen
- waste gas
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Abstract
The invention discloses a method for recovering CO2, which comprises the following steps: compressing the air in a membrane method oxygen enrichment system by using a compressor to produce an oxygen-rich gas; mixing the oxygen-rich gas and part of fuel waste gas with a high-efficiency gas mixer and delivering the mixed gases to a hearth for combustion; mixing part of gases obtained after the combustion and the other part of fuel waste gas, cooling the mixed gases and delivering the mixed gases to a purification system; condensing the purified gases in a condensing system and discharging obtained gases; and delivering liquid CO2 to a rectifying tower for purification and storing the purified CO2 in a storage tank. The method has the advantages of reducing the pollution caused by CO2 produced in the combustion of mineral fuels to the environment, avoiding secondary pollution in a recovery process, along with simplicity, high CO2 recovery rate, small investment, low operation cost and effective control. Therefore, the method can be widely used for recovering CO2 in various fields such as thermal power plants, papermaking plants, chemical fertilizer and cement.
Description
Technical field
The present invention relates to a kind of CO
2Recovery method, CO in the high efficiente callback discharge after particularly a kind of oxygen enrichment secondary combustion
2Method.
Background technology
Along with The development in society and economy, human increasing to the demand of mineral fuel, make that the emission of harmful substances amount is increasing, caused more and more serious global environment problem, wherein the most serious with global warming problems affect scope maximum, problem especially, and least easily solve.Global warming is because with CO
2Be that the main a large amount of dischargings of room temperature air cause the aggravation of Greenhouse effect to cause.CO
2Mainly be created on the combustion processes of mineral fuel, control and slow down the CO that produces in the fossil-fuel-fired process
2Discharging is significant for solving Global warming and Greenhouse effect problem.
CO
2Recovery can be divided into separating treatment in the burning and exhausting gas and fix two aspects with from atmosphere, separating.Take to capture, store and utilize CO at present by fossil-fuel-fired generation
2Method be considered in the recent period by slowing down CO
2Discharge comparatively feasible measure and technology.Existing C O
2Capture and recovery method have following several:
1, solvent absorption.Use solvent to CO
2Absorb CO
2Concentration is up to more than 98%, and this method only is suitable for from lower concentration CO
2Reclaim CO in the waste gas
2, and the flow process complexity, the running cost height.
2, pressure swing adsorption process.Adopt the CO in the solid adsorbent absorption gas mixture
2, concentration is up to more than 60%, and this method only is suitable for removing CO from fertilizer plant's conversion gas
2, and CO
2Concentration is too low can not to be product application.
3, organic membrane partition method.Utilize hollow-fibre membrane separation of C O under high pressure
2, this method only is applicable to that source of the gas is clean, and CO
2Concentration is not higher than 90% occasion.
4, Production by Catalytic Combustion Process.Utilize catalyzer and pure O
2CO
2In incendivity impurity be converted to CO
2And H
2O, this method can only remove CO
2In flammable impurity, energy consumption and cost height are eliminated.
The CO that above-mentioned several method is produced
2All be gaseous state, can't directly utilize that storage and transportation can cause the waste of energy secondary.
Summary of the invention
Summary of the invention: the present invention is directed to the deficiencies in the prior art, a kind of CO with membrane sepn, oxygen-enriched combustion-supporting, compression, rectifying, condensation is provided
2Recovery method.
Technical scheme: CO of the present invention
2Recovery method may further comprise the steps:
1, be oxygen rich gas through the film oxygen enriching system by compressor compresses with air;
2, the oxygen rich gas that obtains is mixed with mixing tank with a part of waste gas in the fuel combustion waste gas and send into the burner hearth burning;
3, the gas after will burning mixes with the rest part exhaust combustion gases, and purification system is sent in cooling;
4, send into the condenser system condensation by purified gas after, the gas of gained directly discharges, with liquid CO
2Sending into rectifying tower purifies;
5, after will purifying CO
2Deposit hold-up vessel in.
Principle of the present invention is: air is compressed after purifying enter the organic polymer oxygen-enriched membrane component, produce concentration 30% left and right sides oxygen enrichment through vacuum take-off, oxygen enrichment is with to enter firing system after part waste gas (5%-15%) mixes combustion-supporting, waste gas after burning (CO
2Content 60%-80%) enter dedusting, cooling, purification system after, enter condenser system, wherein gaseous state CO
2, SO
2Condense into liquid state, liquid CO
2Enter rectifying tower again and purify, finally reach food grade, the liquid CO of technical grade
2
Beneficial effect: the present invention compared with prior art, its remarkable advantage is: recovery method is simple, CO
2Organic efficiency height, less investment, running cost are low, integrate membrane sepn, rectifying, condensation technology, make to reclaim CO
2Application Areas is more extensive, has environmental protection and higher economic value, the CO that effectively control, the fuel combustion of reduction mineral substance produce
2Pollution on the environment, the removal process non-secondary pollution, CO is implemented in the multiple field such as fuel-burning power plant, paper mill, chemical fertilizer, cement that can be applied to widely
2Gas recovery.
Accompanying drawing is CO
2Recovery process figure.
Embodiment
The invention will be further described below in conjunction with a specific embodiment.Embodiment is the unrestricted the present invention of explanation.Any those of ordinary skill can be understood these embodiments and not limit the present invention in any way in this area, can make suitable modification and without prejudice to essence of the present invention with depart from scope of the present invention.
Air is become oxygen rich gas through the film oxygen enriching system by compressor compresses, the concentration of oxygen rich gas (weight ratio) 28-30%; The oxygen rich gas of gained mixed with the part of fuel waste gas of 5-15% and to send into burner hearth combustion-supporting; Waste gas after burning, its CO
2Weight ratio content is 60%-80%; Gas after the burning is mixed with the rest part exhaust combustion gases, and purification system is sent in cooling; And then by the condenser system condensation, the gas of gained is directly discharged, and with the CO of liquid state
2Send into rectifying tower and purify, after the purification CO
2Deposit storage in.The film oxygen enriching system that wherein relates in this technology, purification system, condenser system all are known technologies.
Concrete recovery processing parameter is seen attached list:
Subordinate list is CO of the present invention
2The processing parameter of recovery system.
| The oxygen-enriching device oxygen-rich concentration | ??28％-30％ |
| Firing system exhaust CO 2Concentration | ??50％-70％ |
| Condensing temperature | ??-45℃ |
| Liquid CO 2Purity | ??＜99％ |
| Liquid CO 2Purity | ??＜99.995％ |
Claims (2)
1. CO
2Recovery method, it is characterized in that this method may further comprise the steps:
(1) be oxygen rich gas through the film oxygen enriching system by compressor compresses with air;
(2) oxygen rich gas that obtains is mixed with mixing tank with part waste gas in the fuel combustion waste gas and to send into burner hearth combustion-supporting;
(3) gas after combustion-supporting is mixed with the rest part exhaust combustion gases, purification system is sent in cooling;
(4) after purified gas is sent into the condenser system condensation, the gas of gained directly discharges, with liquid CO
2Sending into rectifying tower purifies;
(5) CO after will purifying
2Deposit hold-up vessel in.
2. a kind of CO according to claim 1
2Recovery method, it is characterized in that described in the step (2) part waste gas account for the 5-15% of whole exhaust gas volumes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105776A CN101792139A (en) | 2010-02-02 | 2010-02-02 | Method for recovering CO2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105776A CN101792139A (en) | 2010-02-02 | 2010-02-02 | Method for recovering CO2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101792139A true CN101792139A (en) | 2010-08-04 |
Family
ID=42585095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010105776A Pending CN101792139A (en) | 2010-02-02 | 2010-02-02 | Method for recovering CO2 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101792139A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252316A (en) * | 2011-04-27 | 2011-11-23 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102705837A (en) * | 2012-07-06 | 2012-10-03 | 南京凯盛国际工程有限公司 | System and method for collaborative garbage disposal of cement clinker production line |
| CN103172403A (en) * | 2012-08-03 | 2013-06-26 | 査晓雄 | Supercritical carbonizing circulating device for modifying cement-based building materials |
| CN104115690A (en) * | 2014-08-06 | 2014-10-29 | 韩秀峰 | Method for applying industrial CO2 in crop growth |
| CN106395786A (en) * | 2016-04-15 | 2017-02-15 | 廖引家 | Capture and storage method for CO2 in cement plant |
| CN110594759A (en) * | 2018-06-12 | 2019-12-20 | 通用电气公司 | Exhaust gas treatment system and treatment method |
| CN110617125A (en) * | 2018-06-20 | 2019-12-27 | 丰田自动车株式会社 | CO for mounting on vehicle using internal combustion engine as power2Separation system |
| CN112250072A (en) * | 2020-12-08 | 2021-01-22 | 小跃科技(北京)有限公司 | Carbon dioxide production system for preparing liquid food grade |
| CN114555200A (en) * | 2018-12-21 | 2022-05-27 | 普拉多斯公司 | Method for producing pure oxygen and hydrogen peroxide |
-
2010
- 2010-02-02 CN CN201010105776A patent/CN101792139A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252316B (en) * | 2011-04-27 | 2014-07-09 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102252316A (en) * | 2011-04-27 | 2011-11-23 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102705837B (en) * | 2012-07-06 | 2015-04-01 | 南京凯盛国际工程有限公司 | System and method for collaborative garbage disposal of cement clinker production line |
| CN102705837A (en) * | 2012-07-06 | 2012-10-03 | 南京凯盛国际工程有限公司 | System and method for collaborative garbage disposal of cement clinker production line |
| CN103172403A (en) * | 2012-08-03 | 2013-06-26 | 査晓雄 | Supercritical carbonizing circulating device for modifying cement-based building materials |
| CN103172403B (en) * | 2012-08-03 | 2014-12-10 | 査晓雄 | Supercritical carbonizing circulating device for modifying cement-based building materials |
| CN104115690A (en) * | 2014-08-06 | 2014-10-29 | 韩秀峰 | Method for applying industrial CO2 in crop growth |
| CN106395786A (en) * | 2016-04-15 | 2017-02-15 | 廖引家 | Capture and storage method for CO2 in cement plant |
| CN110594759A (en) * | 2018-06-12 | 2019-12-20 | 通用电气公司 | Exhaust gas treatment system and treatment method |
| CN110617125A (en) * | 2018-06-20 | 2019-12-27 | 丰田自动车株式会社 | CO for mounting on vehicle using internal combustion engine as power2Separation system |
| CN110617125B (en) * | 2018-06-20 | 2021-09-21 | 丰田自动车株式会社 | CO for mounting on vehicle using internal combustion engine as power2Separation system |
| CN114555200A (en) * | 2018-12-21 | 2022-05-27 | 普拉多斯公司 | Method for producing pure oxygen and hydrogen peroxide |
| CN112250072A (en) * | 2020-12-08 | 2021-01-22 | 小跃科技(北京)有限公司 | Carbon dioxide production system for preparing liquid food grade |
| CN112250072B (en) * | 2020-12-08 | 2021-03-12 | 小跃科技(北京)有限公司 | Carbon dioxide production system for preparing liquid food grade |
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Open date: 20100804 |