Novel chemical absorbent for trapping and recovering carbon dioxide

A technology of chemical absorption and carbon dioxide, which is applied in the direction of absorption, chemical instruments and methods, and separation of dispersed particles, can solve the problems of no large-scale promotion and high cost, and achieve fast absorption and analysis speed, regeneration temperature and regeneration energy consumption. , the effect of large absorption capacity

Inactive Publication Date: 2008-09-17
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost, this method has not been widely promoted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Add organometallic complex 1 (R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 Both are hydrogen, Y is sulfur, M is bismuth) 8.4g, propanol 5ml, seal the reactor, stir for 5 minutes and feed CO 2 10% mixed gas (He / CO 2 ), CO 2 The flow rate of the mixed gas is 50ml / min, and the CO in the tail gas is dynamically detected by a gas chromatograph equipped with a thermal conductivity cell detector. 2 concentration. Within 6 minutes of aeration, almost no CO was detected in the exhaust 2 , indicating that CO 2 The capture rate is close to 100%. CO per liter of absorbing liquid 2 The absorption capacity has reached 67g.

Embodiment 2

[0013] Add organometallic complex 1 (R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 Both are hydrogen, Y is sulfur, M is bismuth) 8.4g, ethylene glycol 5ml, seal the reaction kettle, feed into CO after stirring for 5 minutes 2 10% mixed gas (He / CO 2 ), CO 2 The flow rate of the mixed gas is 50ml / min, and the CO in the tail gas is dynamically detected by a gas chromatograph equipped with a thermal conductivity cell detector. 2 concentration. Within 6 minutes of aeration, almost no CO was detected in the exhaust 2 , indicating that CO 2 The capture rate is close to 100%. CO per liter of absorbing liquid 2 The gas absorption capacity reached 67g.

Embodiment 3

[0015] Add organometallic complex 2 (R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 Both are hydrogen, Y is oxygen, M is bismuth) 8.1g, propylene glycol 2ml, seal the reaction kettle, pass into CO after stirring for 5 minutes 2 10% mixed gas (He / CO 2 ), CO 2 The flow rate of the mixed gas is 50ml / min, and the CO in the tail gas is dynamically detected by a gas chromatograph equipped with a thermal conductivity cell detector. 2 concentration. Within 6 minutes of aeration, almost no CO was detected in the exhaust 2 , indicating that CO 2 The capture rate is close to 100%. CO per liter of absorbing liquid 2 The gas absorption capacity reached 160g.

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PUM

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Abstract

The invention provides a chemical absorbent for recovery of carbon dioxide, which comprises organo-metallic compound and solvent; wherein, the organo-metallic compound is organo-metallic bismuth oxide or organo-metallic antimony oxide. The chemical absorbent for recovery of carbon dioxide has the advantages of strong absorptive capacity, high absorption and analytic speed, low regeneration temperature and energy consumption, no equipment loss, low cost of absorbent, simple preparation, innocuity and non-pollution, high stability and repeatability, and being applicable to recovery of carbon dioxide of flue gas, synthetic ammonia, natural gas, kiln gas and other industrial gases.

Description

technical field [0001] The invention belongs to the technical fields of resource environment and chemical industry, and in particular relates to a novel high-efficiency chemical absorbent for capturing and recovering carbon dioxide. Background technique [0002] Carbon dioxide is the most important greenhouse gas. Over the past 20 years, CO emissions into the atmosphere 2 3 / 4 of that is caused by the burning of fossil fuels. Currently, atmospheric CO 2 content up to 2.75 trillion tons per year in the carbon cycle of CO 2 About 660 billion tons, but an additional 25.7 billion tons of CO are produced each year due to human activities and forest degradation 2 , these unbalanced CO 2 About 3.9% of the carbon cycle. With the acceleration of the global industrialization process, CO will not be produced without large-scale utilization 2 Before the development of new energy sources, fossil fuels are still the main energy sources in modern human society. Therefore, CO 2 Produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 尹双凤罗胜联张晓文代威力
Owner HUNAN UNIV
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