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Adsorbent for tar-containing flue gas treatment and use method of absorbent

A flue gas treatment and adsorbent technology, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of low utilization rate of adsorbent, clogging of adsorbent, secondary pollution, etc., so as to reduce burden and improve adsorption Ability, the effect of increasing the efficiency of use

Inactive Publication Date: 2019-11-26
NINGXIA PAGODA CHEM CENT LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flue gas produced by some activated carbon production plants, coking plants and other chemical plants in the process of using coal contains a large amount of tar, SO 2 , NO x 、H 2 S, when using the traditional desulfurization and denitrification process to treat tar-containing flue gas, the tar is easy to block the adsorbent, resulting in low utilization of the adsorbent, requiring frequent replacement of the adsorbent, resulting in waste and secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Step 1: Collect fly ash, remove impurities, soak in ethanol solution for 2 hours, evaporate to dryness with a rotary evaporator, and grind the dry powder to obtain a powder with a particle size of 100 mesh.

[0014] Step 2: Collect waste materials during the use of coke and semi-coke, remove impurities, and grind to obtain a powder with a particle size of 100 mesh. Put the ground powder into the mixing tank, then add cationic starch, deionized water, and stir Evenly, then add the powder in step 1, stir at 500 rpm for 1 hour, heat in a microwave with a power of 396 watts for 15 minutes, let it stand for 12 hours and then filter, and dry the precipitate at 80°C until it can be molded, and prepare particles with a diameter of 2-5mm. Good granules should be dried at 80°C. Wherein the mass ratio of the powder obtained in step one, the powder obtained in step two, cationic starch, and deionized water is 5:2:25:60.

[0015] Step 3: Calcining the particles prepared in step 2 a...

Embodiment 2

[0017] Step 1: Collect fly ash, remove impurities, soak in ethanol solution for 2 hours, evaporate to dryness with a rotary evaporator, and grind the dry powder to obtain a powder with a particle size of 100 mesh.

[0018] Step 2: Collect the waste materials during the use of coke and semi-coke, remove impurities, and grind to obtain a powder with a particle size of 100 mesh. Put the ground powder into the mixing tank, then add cationic starch, deionized water, and stir Evenly, then add the powder in step 1, stir at 500 rpm for 1 hour, heat in a microwave with a power of 396 watts for 15 minutes, let it stand for 12 hours and then filter, and dry the precipitate at 80°C until it can be molded, and prepare particles with a diameter of 2-5mm. Good granules should be dried at 80°C. Wherein the mass ratio of the powder obtained in step one, the powder obtained in step two, cationic starch, and deionized water is 8:3:30:70.

[0019] Step 3: Calcining the particles prepared in step...

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PUM

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Abstract

The invention discloses an adsorbent which is prepared from coal ash, coke and a semi-coke waste material and is used for treating tar-containing flue gas. wastes are treated by using wastes, the environment protection policy can be met, the adsorbent is good in adsorption capacity and is applied to adsorption of tar-containing flue gas, by virtue of the characteristic that like dissolves like, the tar-containing flue gas is firstly subjected to oil washing, then a tar component in the flue gas can be washed off, and a flue gas discharged from an oil washing reactor is fed into a reactor withthe adsorbent and is discharged after treatment of desulfuration, denitration and dust collection, so that the burden of a solid adsorbent can be greatly alleviated, and the use efficiency of the solid adsorbent can be greatly improved.

Description

technical field [0001] The invention relates to an industrial waste gas treatment technology, in particular to an adsorbent for treatment of tar-containing flue gas. Background technique [0002] With the development of industry, the governance pressure of social environment is increasing. The flue gas produced by some activated carbon production plants, coking plants and other chemical plants in the process of using coal contains a large amount of tar, SO 2 , NO x 、H 2 S, when using the traditional desulfurization and denitrification process to treat tar-containing flue gas, the tar is easy to block the adsorbent, resulting in low utilization rate of the adsorbent, requiring frequent replacement of the adsorbent, resulting in waste and secondary pollution. There is an urgent need for a good adsorbent and a treatment technology for tar-containing flue gas. Contents of the invention [0003] The object of the present invention is to provide an adsorbent for treating tar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01J20/20B01J20/28016B01J20/28054B01D53/02B01D2258/0283B01J2220/4806
Inventor 刘晓燕张琦张瑞李拥军
Owner NINGXIA PAGODA CHEM CENT LAB CO LTD