Nitrogen azole metal salt absorbent solution for acid gases and application thereof

A technology of metal salt solution and acid gas, which is applied in the direction of absorption, adsorption, and separation of dispersed particles, can solve the problems of complex synthesis process, high cost of raw materials and synthesis, high viscosity, etc., and achieve simple preparation method, absorption/desorption Fast speed and low absorption enthalpy

Active Publication Date: 2014-05-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis process of such amino-functionalized ionic liquids is relatively complicated, the cost of raw materials and synthesis is often high, and the viscosity is also high, thus limiting their practical application.

Method used

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  • Nitrogen azole metal salt absorbent solution for acid gases and application thereof
  • Nitrogen azole metal salt absorbent solution for acid gases and application thereof
  • Nitrogen azole metal salt absorbent solution for acid gases and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0040] CO on 5% TrizNa-PEG200 solution system 2 The absorption capacity is tested, the absorption condition is 30°C, 1atm, pure CO 2 atmosphere, CO 2 The flow rate is 50ml / min. Measured CO after 80min 2 The absorption capacity is 28.3mg CO 2 / g solution.

[0041] Under the same test conditions, the CO of TrizNa-PEG200 solution system with different concentrations 2 Absorption data are listed in Table 1.

[0042] Table 1 CO of TrizNa-PEG200 solution system with different concentrations 2 absorb data

[0043]

Embodiment 5-8

[0045] CO on 5% TrizK-PEG200 solution system 2 The absorption capacity is tested, the absorption condition is 10 ℃, 1atm, pure CO 2 atmosphere, CO 2 The flow rate is 50ml / min. Measured CO after 100min 2 The absorption capacity is 27.3mg CO 2 / g solution.

[0046] For the 5% TrizK-PEG200 solution system, keeping other test conditions unchanged, measure the CO of the system at different temperatures 2 absorption capacity. Such as figure 1 As shown, when the temperature rises to 50°C, CO 2 The absorption capacity can still reach more than 80% of the theoretical value.

[0047] The specific absorption data are listed in Table 2.

[0048] Table 2 CO of 5% TrizK-PEG200 solution system at different temperatures 2 absorb data

[0049]

Embodiment 9-12

[0051] CO on 10% TrizNa-PEG200 solution system 2 The absorption capacity is tested, the absorption condition is 30°C, 1atm, pure CO 2 atmosphere, CO 2 The flow rate is 50ml / min. Measured CO after 150min 2 The absorption capacity is 51.2mg CO 2 / g solution.

[0052] Under the same test conditions, the CO of the TrizNa solution system (wherein the mass fraction of TrizNa is 10%) prepared by different polar solvents 2 Absorption data are listed in Table 3.

[0053] Table 3 CO of 10% TrizNa solution system in different solvents 2 absorb data

[0054]

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Abstract

The invention discloses a nitrogen azole metal salt absorbent solution for acid gases and application thereof. The nitrogen azole metal salt absorbent solution comprises, by weight percent, 1-50% of nitrogen azole metal salt and the balance polarity good solvent. The nitrogen azole metal salt is one or optional mixture of imidazolium salt, triazole salt, and tetrazole salt. The polarity good solvent is one of or optional mixture of polyethylene glycol, polypropylene glycol, water, dimethyl sulfoxide, sulfolane, ethylene carbonate, propylene carbonate, glycerol, and polyglycerol. The invention further discloses an application method of the nitrogen azole metal salt absorbent solution for the acid gases. The nitrogen azole metal salt absorbent solution is mainly used for absorbing and separating the acid gases such as CO2, SO2 and H2S, and has the advantages of low cost, high absorption amount, fast absorption / desorption, low desorption energy consumption, high selectivity, reusability and the like.

Description

technical field [0001] The invention relates to acid gas absorption technology, in particular to an acid gas absorbent for azole metal salt solution and application thereof. Background technique [0002] With the development of world industrial civilization and the change of human life style, the discharge of a large amount of acid gas has brought various environmental problems. These environmental problems have directly affected the survival and development of human beings, and the living environment of human beings is also facing severe challenges. The high-speed GDP growth that mankind was once proud of has been eclipsed by environmental pollution, climate change and other issues. These issues have begun to arouse human concerns, and have also received widespread attention in academia and industry. [0003] The environmental problems caused by acid gas emissions mainly include the following aspects: (1) CO emissions from production and living processes such as mining and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14B01D53/02
CPCY02C10/06Y02C10/08Y02C20/40
Inventor 吴林波任杰李伯耿
Owner ZHEJIANG UNIV
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