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Desulfurization and denitrification integral smoke gas purification treatment system and desulfurization and denitrification integral smoke gas purification treatment process

A technology for desulfurization, denitrification, and flue gas purification, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of occupying space, lack of mature technology, consumption of energy materials, etc., to avoid emissions, strong absorption of acidity The ability of oxides and the effect of high desulfurization efficiency

Active Publication Date: 2012-10-10
BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, sulfur and nitrogen oxides (SO 2 , NOx), and there are many treatment technologies for these flue gas pollutants, such as: treatment of sulfur dioxide (SO 2 ), the limestone-gypsum method, the ammonia method, the double alkali method, the selective catalytic reduction (SCR) method, the selective non-catalytic reduction (SNCR) method, the low-nitrogen combustion method for the treatment of nitrogen oxides (NOx), or the above However, the complete removal of sulfur and nitrogen pollutants in the flue gas basically needs to be carried out in different devices, different sections and processes, and at the same time, it takes up a lot of space and consumes a lot of energy and materials
[0003] In order to save energy, many flue gas purification devices installed on the seaside use cheap seawater for purification, which reduces a lot of construction costs and operating costs. However, there is no mature technology for seawater desulfurization devices to use seawater for flue gas denitrification treatment.

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  • Desulfurization and denitrification integral smoke gas purification treatment system and desulfurization and denitrification integral smoke gas purification treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, a desulfurization and denitrification integrated flue gas purification treatment system includes a raw flue gas input system, a raw flue gas oxidation system, an absorption system, a clean flue gas discharge system (not shown in the figure), a comprehensive functional system for desulfurization and denitration agents, Acidity adjustment device, wherein:

[0032] The raw flue gas input system includes a raw flue gas input booster fan 1 and a raw flue gas input pipeline 2 connected to each other;

[0033] The former flue gas oxidation system is an ozone oxidation system, comprising an air input pipeline 3, an air compressor 4 and an ozone generator 5 connected to each other for ozone, and the ozone generator 5 is connected with the former flue gas input pipeline 2;

[0034] The absorption system includes an absorption tower 6, a liquid storage tank 7, a spray device and a demisting device arranged in sequence from bottom to top in the absorptio...

Embodiment 2

[0069] Such as figure 1 As shown, the setting and distribution of a desulfurization and denitrification integrated flue gas purification treatment system are the same as in Embodiment 1.

[0070] Applying the desulfurization and denitrification integrated flue gas purification treatment system of the present invention to carry out flue gas desulfurization and denitrification purification treatment is the same as in Example 1, except for the following steps:

[0071] In step (2), when the pH value of the obtained absorption liquid is 2.5, open the discharge valve, so that the absorption liquid flows into the mixing tank 20 through the absorption liquid discharge pipe 14; the pH value of the mixed liquid in the mixing tank is maintained at 5.4 through the acidity adjustment device; After the liquid is oxidized in the oxidation tank 15 to reach a pH value of 7.5, the oxidized mixed liquid flows into the discharge channel 19 by gravity using the potential difference between the ox...

Embodiment 3

[0074] Such as figure 1 As shown, the setting and distribution of a desulfurization and denitrification integrated flue gas purification treatment system are the same as in Embodiment 1.

[0075] Applying the desulfurization and denitrification integrated flue gas purification treatment system of the present invention to carry out flue gas desulfurization and denitrification purification treatment is the same as in Example 1, except for the following steps:

[0076] In step (2), when the pH value of the obtained absorption liquid is 3.0, open the discharge valve, so that the absorption liquid flows into the mixing pool 20 through the absorption liquid discharge pipe 14; the pH value of the mixed liquid in the mixing pool is maintained at 5.2 through the acidity adjustment device; After the liquid is oxidized in the oxidation tank 15 to reach a pH value of 7.3, the oxidized mixed liquid flows into the discharge channel 19 by gravity using the potential difference between the ox...

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Abstract

The invention relates to a desulfurization and denitrification integral smoke gas purification treatment system and a desulfurization and denitrification integral smoke gas purification treatment process, in particular to an integral smoke gas purification treatment system and an integral smoke gas purification treatment process adopting seawater to realize desulfurization and denitrification. The system comprises a raw smoke gas input system, an absorption system and a clean smoke gas exhaust system in mutual connection, and also comprises a raw smoke gas oxidation system and a desulfurization and denitrification agent integral function system, wherein the raw smoke gas oxidation system is connected with the raw smoke gas input system, and the desulfurization and denitrification agent integral function system is connected with the absorption system. According to the process, the system is utilized for oxidizing the smoke gas, and then, the integral purification and absorption treatment is carried out. The system and the process provided by the invention have the advantages that the system setting and the technical flow process are simple and optimized, the integral smoke gas desulfurization and denitrification are realized, any other substance does not need to be added in the application process, except cyclically utilized seawater and air, the energy-saving and environment-friendly effects are obvious, the green and clean treatment of the smoke gas is realized, and the system and the process are suitable for being applied to the field of industrial tail gas purification treatment, particularly in regions with seawater application convenience, and are particularly suitable for being popularized and applied.

Description

technical field [0001] The invention relates to a desulfurization and denitrification integrated flue gas purification treatment system and its purification treatment process, in particular to a desulfurization and denitrification integrated flue gas purification treatment system and its purification treatment process by using seawater. Background technique [0002] At present, sulfur and nitrogen oxides (SO 2 , NOx), and there are many treatment technologies for these flue gas pollutants, such as: treatment of sulfur dioxide (SO 2 ), the limestone-gypsum method, the ammonia method, the double alkali method, the selective catalytic reduction (SCR) method, the selective non-catalytic reduction (SNCR) method, the low-nitrogen combustion method for the treatment of nitrogen oxides (NOx), or the above However, the complete removal of sulfur and nitrogen pollutants in the flue gas basically needs to be carried out in different devices, different sections and processes, and at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/60
Inventor 艾淑艳
Owner BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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