Influence of liquid coexisting components on CO<sub>2</sub> desorption from decarburization absorbing solution by ammonia method

MA Shuang-chen; WANG Meng-xuan; SONG Hui-hui; ZANG Bin

Volume 41 Issue 04

Apr. 2013

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MA Shuang-chen, WANG Meng-xuan, SONG Hui-hui, ZANG Bin. Influence of liquid coexisting components on CO2 desorption from decarburization absorbing solution by ammonia method[J]. Journal of Fuel Chemistry and Technology, 2013, 41(04): 477-483.

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MA Shuang-chen, WANG Meng-xuan, SONG Hui-hui, ZANG Bin. Influence of liquid coexisting components on CO₂ desorption from decarburization absorbing solution by ammonia method[J]. Journal of Fuel Chemistry and Technology, 2013, 41(04): 477-483.

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Influence of liquid coexisting components on CO₂ desorption from decarburization absorbing solution by ammonia method

School of Environment, North China Electric Power University, Baoding 071003, China

Received Date: 2012-09-11
Rev Recd Date: 2012-11-23
Publish Date: 2013-04-30

Abstract

Abstract

The reaction mechanisms of SO₂, NO_x, CO₂ with ammonia solution were described. And the liquid coexisting components related to the desorption of simulated decarburization solution, including (NH₄)₂SO₃, (NH₄)₂SO₄, NH₄NO₃, NaCl, NH₄Cl and (NH₄)₂CO₃, were analyzed. The results show that the desorption of CO₂ is affected by the mass fraction of liquid phase coexistence components, pH of solution and surface tension. Most of liquid coexisting components could reduce CO₂ desorption of decarburization solution. The restraining effect of liquid coexisting components with the mass fraction less than 10% in the decarburization absorbent liquid on CO₂ desorption is as follows: (NH₄)₂SO₃>NH₄NO₃>(NH₄)₂SO₄ >NaCl>(NH₄)₂CO₃. It is necessary to remove the impurities in flue gas before CO₂ capture, because the purities are harmful for CO₂ desorption due to the hazardous effects on the physical and chemical characteristics of decarburization solution.
- ammonia method,
- liquid phase coexistence components,
- desorption,
- CO₂

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References(19)

References

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