Organic waste gas adsorbent and preparation method thereof

Abstract

The invention discloses an organic waste gas adsorbent, which comprises active semi-coke as a carrier and divinylbenzene as a load, wherein the mass of active semi-coke accounts for 88-95% of the total mass of the adsorbent, and the mass of divinylbenzene accounts for 88% to 95% of the total mass of the adsorbent. The percentage of the total mass is 5-12%. The organic waste gas adsorbent loaded with divinylbenzene is obtained by impregnating the coupling agent and divinylbenzene with active semi-coke. The present invention uses activated semi-coke as a carrier, which has sufficient channels and low cost. Divinylbenzene is loaded by layer-by-layer assembly, and divinylbenzene is loaded on the inner and outer surfaces of the active semi-coke channels. Divinylbenzene not only serves as the supply part The strength support of the active semi-coke carrier. In addition, divinylbenzene can not only be used as an adsorption center after being carried on the active semi-coke, but also can act like a solvent to dissolve organic waste gas in the divinylbenzene layer.

Description

technical field [0001] The present invention relates to an organic waste gas adsorbent, in particular to an active coke adsorbent, and to a preparation method thereof. Background technique [0002] The development of petrochemical, steel and other industries has further promoted the development of the coking industry. With the increasing awareness of environmental protection and the stricter legal system, the waste gas treatment of the coking industry is becoming more and more important. Coking waste gas is mainly divided into organic waste gas (VOCs) and inorganic waste gas. Among them, organic waste gas treatment methods include non-destructive methods, destructive methods and biological treatment methods. At present, petrochemical enterprises use adsorption-desorption methods in non-destructive methods. The most important factor in the adsorption-desorption method is the adsorbent. The commonly used adsorbents mainly include molecular sieve, activated carbon (granular) an...

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Problems solved by technology

Modifying the adsorbent is currently the main way to improve the adsorption capacity of the adsorbent. For example, the Chinese patent application CN2014100758635 discloses an organic waste gas adsorption purifier, which uses Y-type zeolite as a carrier and supports copper oxide and oxyferric chloride. Modification of the zeolite carrier, and the use of copper oxide and oxyferric chloride for catalysis is not conducive to the recovery of organic waste gas; Chinese patent application CN2013103737458 discloses a mesoporous molecular sieve adsorbent modified by organic resin, with mesoporous Molecular sieve is the skeleton material, polymeric organic resin polymerized monomer is the modified material, and the polymerized monomer is introduced into the inner and outer surfaces of mesoporous molecular sieve to achieve modification. The cost of the matrix molecular sieve is high, it is difficult to promote and use, and the crystallization preparation process is relatively complicated.

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