Organic waste gas adsorbent and preparation method thereof

Abstract

The invention discloses an organic waste gas adsorbent. The adsorbent is prepared from the following components in percentage by weight: 80 to 90 percent of all-silicon molecular sieve, 8 to 15 percent of a natural mineral porous material, 2 to 5 percent of a nano-graphite material, as well as, based on the total weight of the three components, 1 to 5 percent of a pore-enlarging agent and 1 to 5 percent of peptizer. The invention discloses a method for preparing the organic waste gas adsorbent. The adsorbent prepared by the method is good in adsorption performance and durable in abrasion and large in treatment area.

Description

technical field [0001] The invention relates to the field of organic waste gas treatment, in particular to an organic waste gas adsorbent and a preparation method thereof. Background technique [0002] In the production of modern chemical industry, pharmaceutical industry and fine chemical industry, some compounds that are quite destructive to the environment, reusable chemical raw materials and some expensive organic intermediates, due to technical reasons, will be exhausted or exhausted with the reaction. discharge into the natural environment. The concentrations of these compounds range from as low as ppm to as high as several percent. The discharge of waste water and waste gas not only seriously damages the natural environment, but also causes a lot of waste of resources. Therefore, how to recycle these reusable resources to the greatest extent and control the pollution to a minimum has always been the goal pursued by scientists and entrepreneurs. [0003] Adsorption,...

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Problems solved by technology

[0004] 1) These adsorbents are all hydrophilic adsorbents. In water vapor and aqueous solution, they easily adsorb water and cannot selectively adsorb organic matter;

[0005] 2) They can often adsorb the inorganic and organic compounds in the waste liquid at the same time, and cannot effectively separate the two, failing to achieve the purpose of separation and purification;

[0006] 3) These adsorbents are relatively harsh on the desorption conditions, and sometimes require organic solvents or strong acid and alkali solutions as desorbents, which increases the cost on the one hand, and may cause secondary pollution to the environment on the other hand

[0007] Restricted by the above factors, these adsorbents cannot be well applied in the field of organic water vapor and organic wastewater treatment at present.