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Preparation method of flue gas dedusting and denitrification preparation

A denitrification and preparation technology, which is applied in the field of flue gas dedusting and denitrification preparation preparation, can solve the problems of low stability, high cost of adsorbent preparation, small adsorption capacity, etc., achieve long service life, improve denitrification and mercury removal capabilities, The effect of improving the adsorption capacity

Active Publication Date: 2018-08-14
上海兴能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used adsorbents have relatively high preparation costs, small adsorption capacity, and low stability, and there are certain defects in large-scale applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for flue gas dedusting and denitrification preparation, which includes the following steps: 1) taking raw materials, 2) ball milling, 3) stirring, drying and grinding, 4) immersing, air drying and grinding, 5) calcining, 6) stirring;

[0020] Specifically, the above-mentioned preparation method comprises the following steps:

[0021] 1) Take raw materials: take 1 part of manganese acetate, 2 parts of diatomaceous earth, 2 parts of potassium humate, 2 parts of ferric chloride, 2 parts of sepiolite, 3 parts of silica gel powder, 4 parts of zeolite powder, 4 parts of dolomite, 5 parts of bentonite, 5 parts of phenolic resin, 7 parts of peanut shell, 7 parts of wheat bran, 15 parts of sodium carbonate aqueous solution with a concentration of 2M, 20 parts of peat soil, and 30 parts of water;

[0022] 2) Ball milling: add sepiolite, dolomite and phenolic resin into a ball mill for ball milling to obtain powder with a particle size of 50-100 mesh, which is...

Embodiment 2

[0029] A preparation method for flue gas dedusting and denitrification preparation, which includes the following steps: 1) taking raw materials, 2) ball milling, 3) stirring, drying and grinding, 4) immersing, air drying and grinding, 5) calcining, 6) stirring;

[0030] Specifically, the above-mentioned preparation method comprises the following steps:

[0031] 1) Raw materials: 2 parts by weight of manganese acetate, 3 parts of diatomaceous earth, 3 parts of potassium humate, 3 parts of ferric chloride, 4 parts of sepiolite, 5 parts of silica gel powder, 7 parts of zeolite powder, 7 parts of dolomite, 9 parts of bentonite, 9 parts of phenolic resin, 12 parts of peanut shells, 12 parts of wheat bran, 25 parts of sodium carbonate aqueous solution with a concentration of 2M, 35 parts of peat soil, and 50 parts of water;

[0032] 2) Ball milling: add sepiolite, dolomite and phenolic resin into a ball mill for ball milling to obtain a powder with a particle size of 100 mesh, which...

Embodiment 3

[0039] The effect test of the dust removal and denitrification treatment boiler flue gas prepared by the embodiment 1-2 of the present invention:

[0040] Get the preparation 5g that embodiment 1-2 prepares respectively, be placed in the reactor and carry out the experiment, simulate and detect the harmful substance in the boiler flue gas, the condition is as follows: NOx, SO 2 And synthetic air composed of dust is blown into the reaction system to control the NOx concentration to 15mg / m 3 , SO 2 The concentration is 8mg / m 3 , Dust 6mg / m 3 , the reaction space velocity (GHSV) is 80,000h -1 . The adsorption capacity of the adsorbent to harmful substances was detected (hazardous substance / adsorbent=mg / g), and the results are shown in Table 1.

[0041] Table 1

[0042] group

[0043] Conclusion: can determine by above table 1, preparation of the present invention is to NOx, SO in flue gas 2 And the adsorption effect of major harmful gases such as dust is better. ...

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Abstract

The invention belongs to the technical field of environmental protection and discloses a method for preparing flue gas dust removal and denitration preparation. The method includes the first step of raw material obtaining, the second step of ball milling, the third step of stirring, drying and grinding, the fourth step of soaking, air drying and grinding, the fifth step of forging and the sixth step of stirring. The preparation method is simple and feasible, and a prepared absorbent is low in cost, good in adsorption effect, large in adsorption capacity, environmentally friendly and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a preparation method of a flue gas dedusting and denitrification preparation. Background technique [0002] Smoke is a mixture of gas and dust and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, SO2, N2, O2, CO, CO2, hydrocarbons, and nitrogen oxides. The dust includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. The harmfulness of dust to the human body is related to the size of the particles. The most harmful to the human body is the floating dust with a diameter of less than 10 microns, especially the 1-2.5 micron floating dust is the most harmful. Flue gas desulfurization and denitrification technology is a boiler flue gas purification tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/26B01D53/02B01D49/00
CPCB01D49/00B01D53/02B01D2253/25B01D2253/304B01D2257/40B01D2257/602B01D2258/0283B01J20/027B01J20/043B01J20/10B01J20/103B01J20/12B01J20/14B01J20/165B01J20/22B01J20/223B01J20/24B01J20/262B01J2220/4806B01J2220/4812B01J2220/485B01J2220/4875
Inventor 许沛华
Owner 上海兴能环保科技有限公司
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