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Serotonin for capturing carbon dioxide gas and serotonin absorbent

A carbon dioxide, complex amine technology, applied in the fields of chemical industry, resources and environment, can solve the problems of reduced absorption rate, high regeneration energy consumption, unable to optimize economic benefits, etc., and achieve the effect of low cost

Inactive Publication Date: 2011-10-19
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Judging from the literature and patents published at home and abroad at present, the absorbent mainly composed of MEA, which has a faster absorption rate, etc., generally cooperates with absorption aids, preservatives, corrosion inhibitors, etc. The capacity is generally low, the regeneration energy consumption is high, the equipment is highly corrosive, and the composite absorbent reduces the absorption rate, which cannot optimize the economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 100ml of MEA (one ethanolamine) solution with a molar concentration of 2mol / L was used as the absorbing liquid, and put into a reactor equipped with a constant temperature oil bath stirrer, and at a temperature of 40°C, a flow rate of 400ml / min was passed into the reactor with a pressure of 0.1MPa concentration is 99% , using gas mass flowmeter for on-line monitoring, thus calculating Absorption rate and absorption capacity. The average absorption rate was measured to be 3.25× mol / s, the absorption is 0.13mol.

[0025] After the solution absorption reaches saturation, use the electrochemical workstation to monitor the absorption saturation of the carbon steel electrode. The corrosion rate in the solution is used to judge the corrosiveness of the absorption solution. The Tafel corrosion current density of the carbon steel electrode measured by the saturated absorption solution is 8.14× A· .

[0026] Desorb the saturated solution at 110°C, and measure its com...

Embodiment 2

[0028] The compound amine for capturing carbon dioxide gas in this example: consists of MEA and PZ (piperazine) with a molar ratio of 4:1; Complex amines for carbon dioxide gas.

[0029] Put 100mL of complex amine absorbent for capturing carbon dioxide gas into a reactor equipped with a constant temperature oil bath stirrer, and at a temperature of 40°C, feed it with a pressure of 0.1MPa and a concentration of 99% at a flow rate of 400ml / min. , using gas mass flowmeter for on-line monitoring, thus calculating Absorption rate and absorption capacity. The average absorption rate was measured to be 4.21× mol / s; Absorption is 0.136mol, which is 4.6% higher than Example 1.

[0030] After the absorption of the complex amine absorbent reaches saturation, use an electrochemical workstation to monitor the absorption saturation of the carbon steel electrode. The corrosion rate in the solution is used to judge the corrosiveness of the absorption solution. The Tafel corrosion cur...

Embodiment 3

[0033] The compound amine for capturing carbon dioxide gas in this example: consists of MEA and AEEA (N-(2-hydroxyethyl)ethylenediamine) with a molar ratio of 4:1; the compound amine absorbent for capturing carbon dioxide gas: A complex amine for trapping carbon dioxide gas with a total amine concentration of 2 mol / L.

[0034] Put 100ml of the compound amine absorbent for trapping carbon dioxide gas with a total amine molar concentration of 2mol / L into a reactor equipped with a constant temperature oil bath stirrer, and feed it with a pressure of 400ml / min at a flow rate of 40°C at a temperature of 40°C. 0.1MPa concentration is 99% , using gas mass flowmeter for on-line monitoring, thus calculating Absorption rate and absorption capacity. The measured average absorption rate is 3.81× mol / s; Absorption is 0.134mol, which is 3.0% higher than Example 1.

[0035]Desorb the saturated solution absorbed by the complex amine absorbent at 110°C, and measure its complete desorpti...

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Abstract

The invention belongs to the technical fields of resource environment and chemical engineering, and relates to a serotonin absorbent for capturing carbon dioxide gas, which particularly consists of mono etobaccool amine solution and an activating agent; the activating agent is polyamine the molecule of which comprises two or more than two amino-groups / imino groups; and the molar ratio of the mono etobaccool amine liquid and the activating agent is 4-1 to 1. The serotonin absorbent for capturing carbon dioxide gas is mixed with water to obtain the serotonin absorbent, and can be directly used for capturing carbon dioxide. As cheaper MEA (Mono Etobaccool Amine) is adopted as the main body of the absorbent, the serotonin absorbent for capturing carbon dioxide gas has the characteristics of low cost, large absorbed dose and high desorption quantity; moreover, the causticity of the serotonin absorbent is lower; the serotonin absorbent for capturing carbon dioxide gas is suitable for removing the carbon dioxide in a plurality of chemical engineering reaction tail gases, burning flue-gases and natural mixed gases, and can also be used for removing the carbon dioxide in urban coal gases and natural gases, etc. Moreover, the serotonin absorbent for capturing carbon dioxide gas is beneficial for industrial application.

Description

technical field [0001] The invention belongs to the technical fields of resource environment and chemical industry, and relates to a composite amine absorbent for capturing carbon dioxide gas. Background technique [0002] The excessive emission of carbon dioxide caused by humans has caused global warming and brought huge disasters to the whole society. How to reduce carbon dioxide emissions and reduce the concentration of carbon dioxide in the atmosphere is the most urgent problem that mankind is facing now. At present, most countries in the world, including my country, have signed the "Kyoto Protocol". At the Copenhagen World Climate Conference, 192 countries reached the "Copenhagen Agreement", which shows that the control of carbon dioxide emissions has become the focus of attention of all countries in the world. At the same time, carbon dioxide is a valuable carbon source, widely used in food, chemical industry, medicine, agriculture and other fields. Therefore, carryi...

Claims

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Application Information

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IPC IPC(8): B01D53/14C01B31/20C01B32/50
CPCY02C20/40Y02P20/151
Inventor 杜云贵辜敏刘涛
Owner CHONGQING UNIV
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