Adsorption concentration method and device of volatile organic matter in solution

A technology of organic matter and solution, applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc., can solve the problems of high one-time investment, high equipment requirements, easy membrane clogging, etc., and achieve low equipment one-time investment, Simple process and energy-saving effect

Inactive Publication Date: 2010-03-17
青岛生物能源与过程研究所
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Problems solved by technology

Huang Yanke et al. used A-type molecular sieve membranes to separate ethylene glycol aqueous solution through pervaporation and steam permeation. Although this method has a high separation coefficient, the membrane method requires high equipment, high one-time investment, and low production capacity, especially for high Boiling point, high-viscosity substrate, easy clogging effect of membrane, difficult daily maintenance, not suitable for large-scale production (Huang Yanke, Xu Wenqing, Yang Weishen, Zhu Linghui, Tan Zhenming, Application of A-type molecular sieve membrane in the separation of ethylene glycol aqueous solution, chemical industry Progress, 2006, 25, p1110-1116)

Method used

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  • Adsorption concentration method and device of volatile organic matter in solution
  • Adsorption concentration method and device of volatile organic matter in solution
  • Adsorption concentration method and device of volatile organic matter in solution

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Take 1.863g / L propanol solution, for different adsorbents, carry out static adsorption according to the amount of solid-liquid mass ratio of 1:3, after reaching the adsorption equilibrium, use gas chromatography to quantitatively analyze the adsorption process, the molecular sieve adsorption rate reaches 95.8 %, coal-based activated carbon adsorption rate reached 86.7%, wood-based activated carbon was 95.0%, coconut shell-based activated carbon was 87.0% (such as figure 2 ).

Embodiment 2

[0055] Take 1.863g / L propanol solution, for hydrophobic molecular sieve and wood-based activated carbon adsorbent, carry out static adsorption according to the amount of solid-liquid mass ratio of 1:6, adjust the pH value of the reaction system, and use gas chromatography to analyze the adsorption after reaching adsorption equilibrium. Quantitative analysis of the process shows that the molecular sieve adsorption rate reaches 89.6% at pH=3, the wood-based activated carbon is 95.8%, the adsorption rate reaches 83.5% at pH=11, and the wood-based activated carbon is 96.8%.

Embodiment 3

[0057] Take 2.0013g / L butanol solution, for different adsorbents, carry out static adsorption according to the amount of solid-liquid mass ratio of 1:6, after reaching the adsorption equilibrium, use gas chromatography to quantitatively analyze the adsorption process, the molecular sieve adsorption rate reaches 92.1 %, the adsorption capacity reached 12.1%; the coal-based activated carbon adsorption rate reached 88.5%, and the adsorption capacity reached 11.6%; the wood-based activated carbon was 92.8%, and the adsorption capacity was 12.8% (such as image 3 ).

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PUM

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Abstract

The invention provides an adsorption concentration method of volatile organic matter in solution. The method comprises the following steps: performing adsorption to the organic solution by passing thesolution through a first adsorption column filled with absorbent so as to accumulate the organic matter into the absorbent; after the first adsorption column is saturated, passing the organic solution through a second adsorption column filled with absorbent for adsorption; blowing the first adsorption column with inert atmosphere to desorb and recover the adsorbed organic matter, then heating thefirst adsorption column for desorption and regeneration; after the second adsorption column is saturated, passing the organic solution through the regenerative first adsorption column for adsorption;meanwhile, blowing the second adsorption column with inert atmosphere so as to desorb and recover the absorbed organic matter, heating the second adsorption column for regeneration; and repeating theabove steps to ensure the whole adsorption process to keep continuous. The invention also provides a device for realizing the method of the invention.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a method for concentrating and separating volatile organic matter in a solution. [0002] The invention also relates to a device for implementing the above method. Background technique [0003] Due to the continuous increase of people's demand for oil and the depletion of petrochemical resources, a series of serious political and environmental problems have been caused. It is imperative to seek new oil substitutes to achieve sustainable human development. Natural biomass uses photosynthesis to continuously store solar energy inside biomass, which is currently the only sustainable source of organic carbon available to humans. Scientists have successfully used microbial fermentation technology to produce ethanol, butanol, 1,3-propanediol and other chemicals from biomass. Some of these processes have already been successfully applied to large-scale ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/00
Inventor 牟新东姜义军李秀涛王喜成孟令倩
Owner 青岛生物能源与过程研究所
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