Biochemical agents for treating boiler flue gas

A boiler flue gas and biochemical technology, applied in the biochemical field, can solve the problems of inability to combine desulfurization, denitrification and dust removal, low stability, and small adsorption capacity, and achieve the best dust removal, desulfurization and denitrification effect, good adsorption effect, and enhanced adsorption capacity. Effect

Active Publication Date: 2018-09-07
内蒙古阜丰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many companies have begun to research preparations that can simultaneously desulfurize, denitrify and dedust, and some products are also on the market; most of the preparations have relatively high cost, small adsorption capacity, low stability, and cannot simultaneously desulfurize, denitrate and dedust function, and there are certain defects in large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A biochemical agent for treating boiler flue gas, which is prepared according to the following process:

[0018] Step 1) Crushing and grinding: add sepiolite to the crusher for crushing, then mix with calcium fluoride and high alumina bauxite, and then grind to obtain mineral powder with a particle size of 100 mesh; among them, sepiolite The mass ratio of calcium fluoride and high alumina bauxite is 5:3:2;

[0019] Step 2) Stirring, filtering, drying and crushing: crush the corn stalks, pass through a 100-mesh sieve to obtain corn stalk powder, transfer it to a mixing tank, then add cationic starch and deionized water to the mixing tank, and stir evenly to obtain a suspension Then add the powder obtained in step 1), stir at 500 rpm for 10 minutes, let it stand for 12 hours, filter and collect the precipitate, dry the precipitate at 80°C, and finally crush it to obtain 50-mesh particles, which is component A; Wherein, the mass ratio of corn stalk powder, cationic starch...

Embodiment 2

[0024] A biochemical agent for treating boiler flue gas, which is prepared according to the following process:

[0025] Step 1) Crushing and grinding: add sepiolite to the crusher for crushing, then mix with calcium fluoride and high alumina bauxite, and then grind to obtain mineral powder with a particle size of 100 mesh; among them, sepiolite The mass ratio of calcium fluoride and high alumina bauxite is 7:5:3;

[0026] Step 2) Stirring, filtering, drying and crushing: crush the corn stalks, pass through a 100-mesh sieve to obtain corn stalk powder, transfer it to a mixing tank, then add cationic starch and deionized water to the mixing tank, and stir evenly to obtain a suspension Then add the powder obtained in step 1), stir at 500 rpm for 10 minutes, let it stand for 12 hours, filter and collect the precipitate, dry the precipitate at 80°C, and finally crush it to obtain 50-mesh particles, which is component A; Wherein, the mass ratio of corn stalk powder, cationic starch...

Embodiment 3

[0031] Composition of simulated flue gas: SO 2 1030mg / Nm 3 , NOx is 509mg / Nm 3 , Dust (3 , airspeed is 5000h -1 , the temperature was 120°C, and at the same time, the preparation prepared in Example 1 was laid in a fixed-bed reactor, and the time for desulfurization, denitration and dust removal was respectively set to 30 and 60 minutes, and the desulfurization, denitration and dust removal rate was measured, see Table 1 for details:

[0032] Table 1

[0033] pollutant type

[0034] Conclusion: The desulfurization, denitrification and dust removal rate of the preparation of the present invention can reach about 90% in 30 minutes, and can reach more than 95% in 60 minutes.

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Abstract

The invention belongs to the technical field of biochemistry and discloses a biochemical preparation for treating boiler smoke. The biochemical preparation is prepared through the first step of crushing and grinding, the second step of stirring, filtering, drying and smashing, the third step of soaking and washing, the fourth step of stirring, evaporating, roasting and smashing, and the fifth step of mixing and stirring. The biochemical preparation has the functions of desulfurization, denitrification and dust removing, the adsorption efficiency is high, and the preparation process is simple.

Description

technical field [0001] The invention belongs to the technical field of biochemistry, and in particular relates to a biochemical preparation for treating boiler flue gas. Background technique [0002] Boiler flue gas is a mixture of gas and smoke, which is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and high-temperature cracking products. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. The harmfulness of smoke 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. [0003] my country is a big country in the production and use of industrial boilers. However, the si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/04B01J20/08B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2257/302B01D2257/404B01J20/046B01J20/08B01J20/10B01J20/20
Inventor 张传森丁兆堂李晓永许传娟徐亚娟张建国高启超
Owner 内蒙古阜丰生物科技有限公司
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