Compound organic absorbent used for flue-gas CO2-removal technology and preparation method thereof

A composite, absorbent technology, applied in the field of boilers, can solve the problems of absorbent loss, large investment and energy consumption, and achieve the effect of improving recovery rate, improving decarbonization efficiency and high efficiency

Inactive Publication Date: 2015-07-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of large absorption capacity and high capture efficiency, and can obtain food-grade CO 2 And reuse, but there are problems of excessive investment and energy consumption, and the loss of absorbent due to volatilization of organic solvents during the desorption process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 Preparation of composite organic absorbent

[0019] When preparing the absorbent, weigh 12.5g of 1-butyl-3-methylimidazolium glycinate and 12.5g of piperazine, that is, the mass ratio is 1:1, and dissolve them in 100mL of deionized water at 30°C and stir. Mix evenly to obtain a composite organic absorbent. The mass concentration percentage of the absorbent is 20%, and the mass concentration of 1-butyl-3-methylimidazolium glycinate is 10%.

Embodiment 2

[0020] Example 2 Preparation of Composite Organic Absorbent

[0021] When preparing the absorbent, 1-butyl-3-methylimidazolium glycinate 1g and piperazine 10g, that is, the mass ratio is 0.1:1, and the two are dissolved in 100mL deionized at 50°C, stirred and mixed , to obtain a composite organic absorbent. The mass concentration percentage of the composite absorbent is 10%, and the mass concentration of 1-butyl-3-methylimidazolium glycinate is 1%.

Embodiment 3

[0022] Example 3 Preparation of composite organic absorbent

[0023] When preparing the absorbent, weigh 22 g of 1-butyl-3-methylimidazolium glycinate and 44 g of piperazine, that is, the mass ratio is 0.5:1, and dissolve them in 100 mL of deionized water at a preparation temperature of 40 °C, and stir , and mix to obtain a composite organic absorbent. The mass concentration percentage of the composite absorbent is 40%, and the mass concentration of 1-butyl-3-methylimidazolium glycinate is 13%.

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PUM

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Abstract

The invention relates to a compound organic absorbent used for a flue-gas CO2-removal technology and a preparation method thereof. The compound organic absorbent is a mixture of an imidazole glycinate ionic liquid and piperazine. The compound organic absorbent comprises a 1-butyl-3-methyl imidazole glycinate ionic liquid, the piperazine and water. The mass concentration of the compound organic absorbent is 10-40%, wherein the mass ratio of the 1-butyl-3-methyl imidazole glycinate ionic liquid to the piperazine is 0.1-1:1. The compound organic absorbent has advantages of easily available raw materials, simple operation conditions, small use amount, high removal efficiency, and the like.

Description

technical field [0001] The invention relates to a composite organic absorbent and a preparation method thereof, in particular to a method for removing CO from boiler flue gas 2 The invention relates to a composite organic absorbent, which belongs to the technical field of boilers. Background technique [0002] The most concerning global environmental issue today is the increase in global temperature, which is mainly due to the increase in atmospheric CO2 caused by the massive burning of fossil fuels. 2 caused by the concentration of carbon dioxide, among which thermal power plants are the main source of emissions. due to CO 2 The greenhouse effect caused by emissions has caused a series of environmental problems such as climate anomalies, sea level rise, vegetation migration and species extinction, so its emission reduction has become a topic of worldwide attention. CO 2 Emission reduction is urgent. Coal flue gas is CO 2 The most important source of flue gas CO 2 Effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 赵毅李蔷薇汪黎东
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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