Compound solution of membrane absorption CO2 gas

A composite solution and membrane absorption technology, applied in the field of membrane separation, can solve the problems of high regeneration heat, high price, and difficulty in obtaining solvents, and achieve the effect of stable operation and high mass transfer coefficient.

Inactive Publication Date: 2010-07-28
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the membranes used to absorb CO 2 There are few composite solutions, and the absorption performance needs to be further improved, and there are disadvantages such as the solvent is not easy to obtain, the price is expensive, the regeneration heat is high, and the solvent erodes the membrane material.

Method used

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  • Compound solution of membrane absorption CO2 gas
  • Compound solution of membrane absorption CO2 gas
  • Compound solution of membrane absorption CO2 gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A compound solution for absorbing CO2 gas by a membrane is composed of amino alkane sulfonate and polyamino organic alcohol. The total concentration of the aminoalkane sulfonate and the polyamino organic alcohol in the aqueous solution is 0.5 mol / L, and the molar ratio of the amino alkane sulfonate to the polyamino organic alcohol is 1.0:0.7. The specific composition is shown in the table below:

[0029]

Embodiment 2

[0031] A membrane absorbs CO 2 The compound solution of gas is composed of two components of amino alkane sulfonate and polyamino organic alcohol. The total concentration of the aminoalkane sulfonate and the polyamino organic alcohol in the aqueous solution is 3 mol / L, and the molar ratio of the amino alkane sulfonate to the polyamino organic alcohol is 1.0:1.2. The specific composition is shown in the table below:

[0032]

[0033] base) ethylenediamine

Embodiment 3

[0035] A membrane absorbs CO 2 The compound solution of gas is composed of two components of amino alkane sulfonate and polyamino organic alcohol. The total concentration of the aminoalkane sulfonate and the polyamino organic alcohol in the aqueous solution is 5 mol / L, and the molar ratio of the amino alkane sulfonate to the polyamino organic alcohol is 1.0:0.5. The specific composition is shown in the table below:

[0036]

[0037] base) tetraethylene pentaamine

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Abstract

The invention discloses compound solution of membrane absorption CO2 gas; the compound solution comprises amino alkane sulfonate and polyamino organic alcohol; the total concentration of the two components amino alkane sulfonate and polyamino organic alcohol in aqueous solution is 0.1 to 5.0mol / L, and the molar ratio of amino alkane sulfonate to polyamino organic alcohol is 1:0.5 to 1.5. Compared with the prior art, after the compound solution presented by the invention is used for the membrane absorption CO2, the performance is better than that of the traditional CO2 absorbent, such as MEA (monoethanolamine) and other components, and simultaneously, is better than that of the single amino alkane sulfonate; and the compound solution of membrane absorption CO2 gas has high mass transfer coefficient, and can stably work in a membrane contactor.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a membrane absorbing CO 2 Compound solution of gas. Background technique [0002] Global climate warming has drawn global attention, and carbon dioxide is generally considered to be one of the important causes of global climate warming due to its greenhouse effect. Reducing carbon dioxide emissions, realizing a low-carbon economy, and reducing the concentration of carbon dioxide in the atmosphere are common problems and challenges faced by mankind. A variety of high-efficiency and low-energy feasible separation and absorption of CO 2 Technology is highly valued by countries. Various high-performance absorbing CO 2 The development of solutions is one of the topics of research in this field. In recent years, due to their unique properties, composite solutions have been used as membranes to absorb CO 2 A hot topic in the study of solutions. [0003] The composite s...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D53/62
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 陆建刚陈敏东王让会张慧方华
Owner NANJING UNIV OF INFORMATION SCI & TECH
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