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Method for enhanced capture of acid gas by cooperation of supergravity and nanofluid technology

A technology of acidic gas and nanofluid, applied in chemical instruments and methods, membrane technology, gas treatment, etc., can solve the problems of low absorption efficiency and low gas-liquid mass transfer efficiency, reduce solvent usage, increase gas-liquid transfer Quality area, enhanced strength effect

Active Publication Date: 2019-07-12
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of low gas-liquid mass transfer efficiency and low absorption efficiency of the traditional gas absorption technology, the present invention provides a method for strengthening the collection of acid gas by supergravity cooperative nanofluid technology

Method used

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  • Method for enhanced capture of acid gas by cooperation of supergravity and nanofluid technology
  • Method for enhanced capture of acid gas by cooperation of supergravity and nanofluid technology
  • Method for enhanced capture of acid gas by cooperation of supergravity and nanofluid technology

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: A method of supergravity synergistic nanofluid technology to strengthen the capture of acid gas. The nano-amine functionalized mesoporous structure particles, surfactant and absorbent solution are prepared into nanofluid and placed in the stirring tank 5, and the acid gas The acid gas in the steel cylinder 1 is buffered and mixed by the buffer tank 2, and the gas mixture containing the acid gas enters from the air inlet 3.2 of the supergravity rotating packed bed 3, and the nanofluid in the stirring tank 5 is transferred from the supergravity rotating packed bed by the centrifugal pump 9. The liquid inlet 3.7 of 3 enters, and the two are countercurrently contacted in the supergravity rotating packed bed 3 to remove the acid gas, and the purified gas and the nanofluid absorbing the acid gas are passed through the gas outlet 3.6 and the outlet of the supergravity rotating packed bed 3 respectively. The liquid port 3.4 is discharged, and the nanofluid enters the ...

Embodiment 2

[0029] Example 2: A method of supergravity synergistic nanofluid technology to strengthen the capture of acid gas. The nano-amine functionalized mesoporous structure particles, surfactant and absorbent solution are prepared into nanofluid, and the gas mixture containing acid gas is prepared by super The inlet of the gravity rotating packed bed enters, and the nanofluid enters from the liquid inlet of the supergravity rotating packed bed through the centrifugal pump. The nanofluid of the gas is respectively discharged from the gas phase outlet and the liquid phase outlet of the high-gravity rotating packed bed; wherein the acid gas is H 2 S; the surfactant is cetyltrimethylammonium bromide CTAB; the absorbent is N-methyldiethanolamine MDEA; the nano-amine functionalized mesoporous structure particles are nano-amine functionalized SBA- 15.

[0030] Specific steps are as follows:

[0031] (1) Prepare absorbent base liquid: prepare 2L of 40wt% solution with N-methyldiethanolamin...

Embodiment 3

[0036] Example 3: A method of supergravity synergistic nanofluid technology to strengthen the capture of acid gas, the nano-amine functionalized mesoporous structure particles, surfactant and absorbent solution are formulated into nanofluid, and the gas mixture containing acid gas is prepared by super The inlet of the gravity rotating packed bed enters, and the nanofluid enters from the liquid inlet of the supergravity rotating packed bed through the centrifugal pump. The nanofluid of the gas is respectively discharged from the gas phase outlet and the liquid phase outlet of the high-gravity rotating packed bed; wherein the acid gas is SO 2 The surfactant is sodium dodecylbenzenesulfonate SDBS; the absorbent is diethylenetriamine (DETA); the nanometer amine functionalized mesoporous structure particles are nanometer amine functionalized MCM-48.

[0037] Specific steps are as follows:

[0038] (1) Preparation of absorbent base liquid: Diethylenetriamine (DETA) and deionized wa...

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Abstract

The invention belongs to the technical field of environmental protection, and provides a method for enhanced capture of acid gas by cooperation of supergravity and nanofluid technology in order to overcome defects of low gas-liquid mass transfer efficiency and low absorption efficiency of a traditional gas absorption technology. The method comprises steps as follows: nanofluid is prepared from nano amine functionalized mesoporous-structure particles, a surfactant and an absorbent solution, an acid-containing gas mixture enters from a gas inlet, the nanofluid enters from a liquid inlet througha centrifugal pump, the acid-containing gas mixture and the nanofluid are in countercurrent contact in a supergravity rotating packed bed to remove acid gas, and purified gas and the nanofluid are discharged from a gas phase outlet and a liquid phase outlet respectively; the absorptive amount of the acid gas by an absorbent is increased, the use quantity of a solvent is reduced, and the removing time is shortened; a high viscosity liquid and a solid particle contained system can be treated. The device is simple and efficient, occupies a small area, meets the environmental requirement, and canbe applied to the fields of acid gas capture of a thermal power plant, acid gas removal of the chemical industry, acid gas separation from natural gas and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for enhancing the collection of acid gas by supergravity and nanofluid technology. Background technique [0002] According to the latest data released by the World Health Organization on May 2, 2018, the air pollution situation in many places around the world is still serious. Globally, it is estimated that as many as 7 million people die each year from outdoor environmental and indoor air pollution; 9 out of 10 people in the world are breathing air with high levels of pollutants. The chief culprit of the air pollutant problem is the massive use of coal. Throughout the global energy distribution, coal is still the main energy source, and a large amount of gas is released during use, such as CO 2 、H 2 S, SO 2 and other acid gases. Certain acid gases such as SO 2 In rainy days, it reacts with oxygen to produce sulfuric acid with strong cor...

Claims

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Application Information

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IPC IPC(8): B01D53/83B01D53/78B01D53/62B01D53/52B01D53/50
CPCB01D53/507B01D53/52B01D53/62B01D53/78B01D53/83B01D2257/504
Inventor 刘有智成尚元祁贵生
Owner ZHONGBEI UNIV
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