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Efficient composite desulfurization and denitrification absorbent

A technology of desulfurization and denitrification and absorbent, applied in the field of desulfurization and denitrification, can solve the problems of poor practicability of desulfurization and denitrification, failure of absorbent, poor uniformity, etc., and achieve ideal effect, prolong service life and less composition

Active Publication Date: 2022-05-24
河北华硕化工助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy. During the use of the boiler, a large amount of energy will be generated after the fuel is burned. Dust (including fly ash and carbon black), sulfur and nitrogen oxides contained in boiler flue gas are all substances that pollute the atmosphere. When they are not purified, their emission indicators can reach several times the environmental protection regulations. Tens of times, while SO2 and NOx are the main sources of air pollutants. In order to control the emission of these substances, simultaneous desulfurization and denitrification of flue gas is the main development trend of air pollution control. Desulfurization and denitrification of boiler flue gas have become a must. Indispensable measures, when the existing flue gas is processed, the generated flue gas is pretreated by cooling, dust removal, etc., and then passed into the equipment with desulfurization and denitrification absorbent for adsorption reaction, and the flue gas Sulfur and nitrogen oxides are treated to reduce the content of sulfur and nitrogen oxides in the exhausted flue gas and reduce air pollution. However, due to the rapid combustion reaction of the boiler during the combustion process, the emission speed of the flue gas is also very fast. , when it is post-treated, it is easy to appear that the flue gas flow rate is too fast to cause poor uniformity of contact with the desulfurization and denitrification absorbent, which affects the speed of desulfurization and denitrification, and in the process of desulfurization and denitrification, the absorption The agent is easy to fail as the reaction proceeds, resulting in poor practicability of the existing desulfurization and denitrification agents

Method used

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Examples

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Effect test

Embodiment 1

[0029] The high-efficiency composite desulfurization and denitrification absorbent of the present invention includes solution preparation A, and its preparation method is: adding chlorite into water to fully dissolve, and adding hypochlorite into the mixed solution, fully stirring to dissolve, and then Use a pH regulator to adjust the pH value of the solution preparation A to 5.5, and obtain the solution preparation A after constant volume, wherein the addition amount of each raw material is:

[0030]

[0031] Wherein the pH regulator is any one or a mixture of dilute hydrochloric acid, nitric acid and sulfuric acid.

[0032] The desulfurization and denitrification absorbent also includes solid preparation B, which is composed of buoyant granules and sinking granules at a ratio of 1:3, and its preparation method is as follows:

[0033] Preparation of floating particles: Dissolve sodium humate in water, add coconut shell activated carbon powder to it, heat and stir at the sa...

Embodiment 2

[0062] The high-efficiency composite desulfurization and denitrification absorbent of the present invention includes solution preparation A, and its preparation method is: adding chlorite into water to fully dissolve, and adding hypochlorite into the mixed solution, fully stirring to dissolve, and then Use a pH regulator to adjust the pH value of the solution preparation A to 6.0, and obtain the solution preparation A after constant volume, wherein the addition amount of each raw material is:

[0063]

[0064]

[0065] Wherein the pH regulator is any one or a mixture of dilute hydrochloric acid, nitric acid and sulfuric acid.

[0066] The desulfurization and denitration absorbent also includes solid preparation B, which is composed of buoyant granules and sinking granules at a ratio of 1:5, and its preparation method is as follows:

[0067] Preparation of floating particles: Dissolve sodium humate in water, add coconut shell activated carbon powder to it, heat and stir a...

Embodiment 3

[0096] The high-efficiency composite desulfurization and denitrification absorbent of the present invention includes solution preparation A, and its preparation method is: adding chlorite into water to fully dissolve, and adding hypochlorite into the mixed solution, fully stirring to dissolve, and then Use a pH regulator to adjust the pH value of the solution preparation A to 5.5, and obtain the solution preparation A after constant volume, wherein the addition amount of each raw material is:

[0097]

[0098] Wherein the pH regulator is any one or a mixture of dilute hydrochloric acid, nitric acid and sulfuric acid.

[0099] The desulfurization and denitrification absorbent also includes solid preparation B, which is composed of buoyant granules and sinking granules at a ratio of 1:4, and its preparation method is as follows:

[0100] Preparation of floating particles: Dissolve sodium humate in water, add coconut shell activated carbon powder to it, heat and stir at the same...

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Abstract

The invention relates to the technical field of desulfurization and denitrification, in particular to an efficient composite desulfurization and denitrification absorbent which can improve the contact uniformity of flue gas and the absorbent, improve the desulfurization and denitrification rate, prolong the service life of the absorbent and improve the practicability. Comprising a solution preparation A, and the solution preparation A comprises the following raw materials in parts by weight: 28-35 parts of pypocholoride; 18 to 21 parts of chlorite; 0-10 parts of a pH regulator; 54 to 62 parts of water; the solid preparation B is composed of porous particles, the porous particles comprise floating particles and sinking particles, and the use ratio of the floating particles to the sinking particles is 1: (3-5).

Description

technical field [0001] The invention relates to the technical field of desulfurization and denitrification, in particular to a high-efficiency composite desulfurization and denitrification absorbent. Background technique [0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy. During the use of the boiler, a large amount of energy will be generated after the fuel is burned. Dust (including fly ash and carbon black), sulfur and nitrogen oxides contained in boiler flue gas are all substances that pollute the atmosphere. When they are not purified, their emission indicators can reach several times the environmental protection regulations. Tens of times, while SO2 and NOx are the main sources of air pollutants. In order to control the emission of these substances, simultaneous desulfur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/02B01D53/60
CPCB01D53/79B01D53/02B01D53/60B01D2251/108B01D2253/102B01D2253/108B01D2253/10B01D2253/20B01D2258/0283Y02A50/20
Inventor 马红英
Owner 河北华硕化工助剂有限公司