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CO2 absorbent and preparation method thereof

An absorbent and a certain amount of technology, applied in the field of CO2 absorbent and its preparation, can solve the problem of low metal oxide capture performance

Inactive Publication Date: 2013-04-03
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to overcome that the organic amine solution is corrosive, and the metal oxide CO 2 Insufficient capture performance, providing a CO that combines the respective advantages of organic amine solutions and metal oxides 2 Absorbent and its preparation method

Method used

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  • CO2 absorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of organic amine-metal oxide composite absorbent: Dissolve 0.05 g of organic amine N-methyldiethanolamine (MDEA) in 400 ml of water, then add 5 g of basic metal oxide magnesium oxide, ultrasonicate for 10 minutes, and evenly dissolve magnesium oxide Suspended and dispersed in MDEA aqueous solution to prepare MDEA-MgO composite absorbent.

[0016] In a 50ml glass reactor, the CO 2 For the capture capacity test, 40.5ml of the above-mentioned composite absorbent is loaded into a glass reactor, and the absorption temperature is controlled at 25°C. CO was introduced into the reactor 2 and N 2 , CO 2 The flow rate is 5ml / min, N 2 The flow rate is 45ml / min. CO 2 and N 2 After mixing, it enters the reactor, and the gas reaction product is analyzed by mass spectrometry after being absorbed by the absorbent. Absorbent captures CO 2 The capabilities can be seen in Table 1. The flow chart of the reaction device is attached figure 1 .

Embodiment 2

[0018] Preparation of organic amine-metal oxide composite absorbent: Dissolve 5 g of organic amine N-methyldiethanolamine (MDEA) in 400 ml of water, then add 5 g of basic metal oxide magnesium oxide, and ultrasonicate for 10 minutes to uniformly dissolve magnesium oxide Suspended and dispersed in MDEA aqueous solution to prepare MDEA-MgO composite absorbent.

[0019] In a 50ml glass reactor, the CO 2 For the capture capacity test, 40.5ml of the above-mentioned composite absorbent is loaded into a glass reactor, and the absorption temperature is controlled at 25°C. CO was introduced into the reactor 2 and N 2 , CO 2 The flow rate is 5ml / min, N 2 The flow rate is 45ml / min. CO 2 and N 2 After mixing, it enters the reactor, and the gas reaction product is analyzed by mass spectrometry after being absorbed by the absorbent. Absorbent captures CO 2 The capabilities can be seen in Table 1. The flow chart of the reaction device is attached figure 1 .

Embodiment 3

[0021] Preparation of organic amine-metal oxide composite absorbent: Dissolve 5 g of organic amine N-methyldiethanolamine (MDEA) in 400 ml of water, then add 2 g of basic metal oxide magnesium oxide, stir for 10 minutes, and dissolve magnesium oxide evenly Suspended and dispersed in MDEA aqueous solution to prepare MDEA-MgO composite absorbent.

[0022] In a 50ml glass reactor, the CO 2 For the capture capacity test, 40.5ml of the above-mentioned composite absorbent is loaded into a glass reactor, and the absorption temperature is controlled at 25°C. CO was introduced into the reactor 2 and N 2 , CO 2 The flow rate is 5ml / min, N 2 The flow rate is 45ml / min. CO 2 and N 2 After mixing, it enters the reactor, and the gas reaction product is analyzed by mass spectrometry after being absorbed by the absorbent. Absorbent captures CO 2 The capabilities can be seen in Table 1. The flow chart of the reaction device is attached figure 1 .

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Abstract

The invention relates to a CO2 absorbent and a preparation method thereof. The absorbent is composed of organic amine and alkali metal oxide in a mass ratio of (0.01-100):1. The preparation method comprises the following steps: dissolving the organic amine in water, adding the alkali metal oxide, and maximally dispersing the metal oxide in the water in a suspension state by ultrasonic or stirring, thereby obtaining the product. The absorbent has higher trapping property for CO2.

Description

technical field [0001] The present invention relates to a CO 2 Absorbent and method for its preparation. Background technique [0002] Due to CO 2 The greenhouse effect of the gas, CO 2 The capture technology is getting more and more attention, the common CO 2 Absorbent organic amine solutions, metal oxides, and mesoporous materials loaded with organic amines, etc. Organic amine solutions have CO 2 The advantage of high absorption performance, but its disadvantage is that the organic amine solution is corrosive and easy to corrode for capturing CO 2 The container; the disadvantage of solid metal oxides is the low capture performance, which is due to the CO 2 Only adsorb or react only with the surface of metal oxides. Therefore design and develop a low corrosion but high CO 2 Absorbents that capture performance are of great importance. Contents of the invention [0003] The technical problem to be solved in the present invention is to overcome that the organic amin...

Claims

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Application Information

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IPC IPC(8): B01D53/14
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 胡庚申姚蔓莉罗孟飞冯星星董艳艳
Owner ZHEJIANG NORMAL UNIVERSITY
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