Ion additive for carbon dioxide absorbent of organic amines

A technology of carbon dioxide and organic amines, applied in inorganic chemistry, through absorption, reagents, etc., can solve the problems of absorbent oxidation, chemical corrosion, and easy deterioration and failure of absorbents, and achieve the effect of reducing oxidation rate and reducing electrochemical corrosion

Active Publication Date: 2012-11-14
CPI YUANDA ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CO 2 The quality of the absorbent is one of the main determinants of the process, but in the flue gas environment of coal-fired power plants, the current absorbent is prone to oxidation, fly ash pollution, chemical corrosion, etc., and the absorbent is prone to deterioration and failure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 Organic Amine Carbon Dioxide Absorber Containing Ionic Additives

[0014] 1. Preparation of organic amine carbon dioxide absorbent containing ionic additives

[0015] The organic amine carbon dioxide absorbent containing ionic additives is 18% MEA by mass percentage, and 0.01% Rb[UO 2 SeO 4 (OH)·H 2 O], the mass percentage is 0.01% Cu 2 (CO 3 )(OH) 2 And the mass percentage is 0.01%Na 2 CO 3 composition.

[0016] 2. Performance testing

[0017] 2.1 Test of oxidation rate

[0018] In this embodiment, the oxidation rate test is calculated by the time when the concentration of amine (MEA) is reduced to 95%.

[0019] To increase the reaction rate, 100% oxygen was used. In a stirred reactor at atmospheric pressure, various amine solutions were measured at 100% O 2 Oxidation rate in the presence of oxygen, the main experimental process is as follows: in the test preparation stage, first adjust the constant temperature oil bath magnetic stirrer to the abs...

Embodiment 2

[0024] Example 2 Organic amine carbon dioxide absorbent containing ionic additives

[0025] 1. Preparation of organic amine carbon dioxide absorbent containing ionic additives

[0026] The organic amine carbon dioxide absorbent containing ionic additives is 18% by mass percent of MEA, and the mass percent is 5% Rb[UO 2 SeO 4 (OH)·H 2 O] and the mass percent is 5% Cu 2 (CO 3 )(OH) 2 composition.

[0027] 2. Performance testing

[0028] 2.1 Test of oxidation rate

[0029] In this embodiment, the oxidation rate-amine is reduced to 95% time calculation.

[0030] To increase the reaction rate, 100% oxygen was used. In a stirred reactor at atmospheric pressure, various amine solutions were measured at 100% O 2 Oxidation rate in the presence of oxygen, the main experimental process is as follows: in the test preparation stage, first adjust the constant temperature oil bath magnetic stirrer to the absorption temperature of 105°C, the magnetic stirring speed is 180r / min, and ...

Embodiment 3

[0035] Example 3 Organic Amine Carbon Dioxide Absorber Containing Ionic Additives

[0036] 1. Preparation of organic amine carbon dioxide absorbent containing ionic additives

[0037] The organic amine carbon dioxide absorbent containing ionic additives is composed of 18% by mass of MEA and 0.2% by mass of Rb[UO 2 SeO 4 (OH)·H 2 O], the mass percentage is 0.2% Cu 2 (CO 3 )(OH) 2 And the mass percentage is 0.1%Na 2 CO 3 composition.

[0038] 2. Performance testing

[0039] 2.1 Test of oxidation rate

[0040] In this embodiment, the oxidation rate-amine is reduced to 95% time calculation.

[0041] To increase the reaction rate, 100% oxygen was used. In a stirred reactor at atmospheric pressure, various amine solutions were measured at 100% O 2 Oxidation rate in the presence of oxygen, the main experimental process is as follows: in the test preparation stage, first adjust the constant temperature oil bath magnetic stirrer to the absorption temperature of 105°C, the m...

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Abstract

The invention relates to a carbon dioxide separation technique, which is particular applied to an ion additive for carbon dioxide absorbent of organic amines, wherein, the ionic additive contains 0.01%-5% of Rb[UO2SeO4(OH).H2O] and 0.01%-5% Cu2(CO3)OH2. Compared with organic amines without the ion additive, the oxidation speed of the organic amines with the ionic additive can be reduced by around50% and the electrochemical corrosion can be decreased by 40%.

Description

technical field [0001] The invention relates to gas separation technology, in particular to the separation technology of carbon dioxide. Background technique [0002] The greenhouse effect is seriously threatening the earth's environment on which human beings depend. The key to the global response to the greenhouse effect is to reduce greenhouse gas emissions, mainly reducing energy consumption of CO 2 emission. According to EIA's "World Energy Outlook 2007", the increase in coal demand is the largest increase in energy types. From 2007 to 2030, coal demand will increase by about 64%. Therefore, on a global scale, the reduction caused by coal consumption CO 2 Emissions are one of the main ways to control their total emissions. In 2009, the CO produced by my country's energy consumption 2 Emissions surpass the United States to become the world's largest CO 2 emitter country. my country CO 2 The rapid growth of emissions will attract more and more attention and pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/20B01D53/14C01B32/50
CPCY02C10/06Y02C20/40Y02P20/151
Inventor 秦福初喻江涛伍灵王厚林
Owner CPI YUANDA ENVIRONMENTAL PROTECTION ENG
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