Preparation of multistage natural adsorbent for treating organic waste gas, and method of use

A technology of organic waste gas and adsorbents, applied in chemical instruments and methods, and other chemical processes, can solve problems such as land occupation and landscape impact, and achieve the effects of low cost, simple operation process, and rich content

Inactive Publication Date: 2007-12-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] With the development of the agricultural product processing industry, a large number of waste pla

Method used

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  • Preparation of multistage natural adsorbent for treating organic waste gas, and method of use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Wash the discarded plant cutin, remove the remaining pulp and seed impurities, dry, pulverize, and sieve through 20 meshes to obtain a primary natural adsorbent for organic waste gas;

[0019] 2) adding the primary natural adsorbent to the eluent, the mass-volume ratio of the primary natural adsorbent to the eluent is 1:1000, after spraying, the hydrophilic and hydrophobic organic pollutants in the organic waste gas are simultaneously removed; After precipitation, the primary natural adsorbent that adsorbed organic pollutants was recovered, dried, and carbonized at 200°C for 2 hours to obtain a secondary natural adsorbent.

Embodiment 2

[0021] 1) Wash the discarded plant cutin, remove the remaining pulp and seed impurities, dry, pulverize, and sieve through 200 meshes to obtain a primary natural adsorbent for organic waste gas;

[0022] 2) adding the primary natural adsorbent to the eluent, the mass-volume ratio of the primary natural adsorbent to the eluent is 1:10000, after spraying, the hydrophilic and hydrophobic organic pollutants in the organic waste gas are simultaneously removed; After precipitation, the primary natural adsorbent adsorbed with organic pollutants was recovered, dried, and carbonized at 200°C for 6 hours to obtain a secondary natural adsorbent.

Embodiment 3

[0024] 1) Wash the discarded plant cutin, remove the remaining pulp and seed impurities, dry, pulverize, and sieve through 150 meshes to obtain a primary natural adsorbent for organic waste gas;

[0025] 2) adding the primary natural adsorbent to the eluent, the mass volume ratio of the primary natural adsorbent to the eluent is 1:8000, after spraying, the hydrophilic and hydrophobic organic pollutants in the organic waste gas are removed at the same time; After precipitation, the primary natural adsorbent adsorbed with organic pollutants is recovered, dried, and carbonized at 150° C. for 4 hours to obtain a secondary natural adsorbent.

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Abstract

The invention publishes a preparation and application method for processing waste gas multistage natural absorbent. The preparation method is as follows: 1) cleans the scrap plant cutin, wiping off the surplus fruit pulp and the seed impurity, drying, crushing up, riddling it 20-200 items, and making the organic waste gas primary natural absorbent; 2) putting the primary natural absorbent into leaching lotion, the ratio of quality and volume is 1:1000-1:10000 between the primary natural absorbent and leaching lotion, after gushing and drenching, removing the water affinity and the hydrophobic organic pollutant in the organic waste gas simultaneously; after precipitation, reclaiming the primary natural absorbent which adsorbs the organic pollutant, after drying, making a carbonizing for 2-6 hours at 100-200deg.c. produce the secondary natural absorbent. The invention solves the problem of removing the water affinity and the hydrophobic organic pollutant in the organic waste gas simultaneously; it can be used in adsorption processing of highly concentrated organic waste gas containing watery vapor in manufacturing drugs, petrochemical processing, and making pesticide. Its advantage is the adsorption material came from savageness, rich content, non-toxic action, simple operation, remarkable purification effect, after adsorption processing, the solid - fluid is easy to separate and recycle.

Description

technical field [0001] The invention relates to waste gas treatment technology and application, in particular to a method for preparing and using a multi-stage natural adsorbent for treating organic waste gas. Background technique [0002] Air pollution is one of the most prominent environmental problems in my country at present, and industrial waste gas is an important source of air pollutants. The most harmful and difficult to treat industrial waste gas is organic waste gas; the composition of organic waste gas in different industries is different, and there are different requirements for treatment methods and devices. At present, the treatment methods of organic waste gas are mainly divided into two categories: recovery method and elimination method. The recovery method is to select appropriate adsorbents and selective permeable membranes under certain conditions to separate volatile organic pollutants. The elimination method is to convert pollutants into water and carb...

Claims

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Application Information

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IPC IPC(8): B01J20/24
Inventor 陈宝梁李云桂
Owner ZHEJIANG UNIV
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