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Method for optimizing VOCs (volatile organic compounds) adsorbing material combined formula

An adsorption material and formula technology, applied in the field of pollutant purification materials, can solve the problems of reduced removal rate, high cost of a single adsorbent, secondary pollution, etc., and achieve the effects of prolonging life, low cost and high removal efficiency

Active Publication Date: 2018-08-28
北京航天河科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for optimizing the combination formula of VOCs adsorption materials, which solves the problem that the cost of using a single adsorbent is high, and it needs to be replaced in time, otherwise the removal rate will drop sharply and secondary pollution will easily occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] S1: Select VOCs gas containing a large amount of sulfur dioxide and nitrogen dioxide as the source of VOCs pollution, and detect the sum C1 of the concentration of each component.

[0034] S2: Select adsorption material

[0035] Molecular sieve: choose 3A molecular sieve, 4A molecular sieve, 5A molecular sieve;

[0036] Block activated carbon: the mesh number is 4-8 mesh, 6-12 mesh, 8-16 mesh, 18-30 mesh, and the iodine value range is 500-800mg / g;

[0037] Columnar activated carbon: diameter is 0.9mm, 1.5mm, 2.0mm, 3.0mm, 4.0mm, iodine value is 500-1000mg / g, specific surface area is 500-1050m 2 / g, carbon tetrachloride (CTC) value is 50-80mg / g.

[0038] Each adsorption material is loaded into different filling tubes respectively, and the weight of the adsorption materials in each filling tube is equal.

[0039] S3: Combine the filled tubes filled with adsorption materials in step S2, so that each combination contains 1 molecular sieve packed column, 1 activated carbo...

Embodiment 2

[0052] S1: Select VOCs gas containing a large amount of benzene, toluene, and xylene as the source of VOCs pollution, and detect the sum of the concentrations of VOCs components C1.

[0053] S2: Select adsorption material

[0054] Block activated carbon: 4-8 mesh, 5-10 mesh, 8-16 mesh, 10-24 mesh, iodine value 500-800mg / g;

[0055] Columnar activated carbon: diameter is 0.9mm, 1.5mm, 2.0mm, 3.0mm, 4.0mm, iodine value is 500-1000mg / g, specific surface area is 500-1050m 2 / g, carbon tetrachloride (CTC) value is 50-80mg / g.

[0056] S3: Combine the filled tubes filled with adsorption materials in step S2, so that each combination contains 1 activated carbon block-filled column and 2 pillar-shaped activated carbon-filled columns; connect 1 activated carbon block-filled column and 2 pillar-shaped activated carbon columns in series packed column;

[0057] An online gas chromatograph is connected to the gas outlet of the above-mentioned columnar activated carbon packed column.

[00...

Embodiment 3

[0070] S1: Select VOCs gas containing a large amount of formaldehyde, acetic acid, and hydrogen sulfide as the source of VOCs pollution, and detect the sum of the concentrations of VOCs components C1.

[0071] S2: Select adsorption material

[0072] Block activated carbon: 5-10 mesh, 10-24 mesh, 18-30 mesh, iodine value 500-800mg / g;

[0073] Columnar activated carbon: diameter is 0.9mm, 1.5mm, 2.0mm, 3.0mm, 4.0mm, iodine value is 500-1000mg / g, specific surface area is 500-1050m 2 / g, carbon tetrachloride (CTC) value is 50-80mg / g.

[0074] S3: Combine the filled tubes filled with adsorption materials in step S2, so that each combination contains 1 activated carbon block-filled column and 1 pillar-shaped activated carbon-filled column; connect 1 activated carbon block-filled column and 1 pillar-shaped activated carbon in series packed column;

[0075] An online gas chromatograph is connected to the gas outlet of the above-mentioned columnar activated carbon packed column.

...

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Abstract

The invention relates to a method for optimizing a combined formula of VOCs (volatile organic compounds) adsorbing materials. The method comprises the following steps: selecting adsorbing materials with different properties by aiming at the specific VOCs pollution, putting the adsorbing materials into filling pipes, performing serial connection on the filling pipes according to different arrangement combination, enabling the VOCs pollution source to pass through the filling pipes which are connected in series, detecting the removing condition of the VOCs after the VOCs pollution source passesthrough the filling pipes which are connected in series, and selecting the combination with the best removal effect as the optimal formula. According to the method provided by the invention, the components of the VOCs are subjected to combined adjustment of an adsorbent formula, the combination of a plurality of adsorbents is adopted, the cost can be further reduced greatly and the life of purification equipment is prolonged. The formula obtained by the method has the characteristics of high removal efficiency, low cost, no secondary pollution and the like in the actual engineering application.

Description

technical field [0001] The invention relates to the field of pollutant purification materials, in particular to a method for optimizing the combined formula of VOCs adsorption materials. Background technique [0002] In recent years, large-scale and long-term smog weather has continued to appear in China, photochemical pollution has occurred from time to time, and the deterioration of urban ambient air quality has accelerated significantly. According to the new national ambient air quality standards, in 2013, the average proportion of days in 74 cities across the country was 60.5%, and the proportion of days in individual cities was less than 50%, and the concentration of PM2.5 and O3 exceeded the standard seriously (Ministry of Environmental Protection, 2014). Since VOCs (volatile organic compounds) are important precursors of ozone and PM2.5, the control of VOCs emissions is crucial to the improvement of the atmospheric environment. [0003] There are many and complex sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02
CPCB01D53/02B01D2253/102B01D2253/116B01D2257/708
Inventor 张平平王志勇高志良罗宇轩季启政熊国鸿
Owner 北京航天河科技发展有限公司