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Dual flue gas purification technology and purification system thereof

A flue gas purification process, flue gas purification technology, applied in the direction of chemical instruments and methods, dispersed particle filtration, combined devices, etc., can solve the problems of air secondary pollution, pollution, and affecting people's health, and achieve the prevention of secondary pollution , The system structure is simple, and the effect of enhancing the environmental protection effect

Active Publication Date: 2014-03-26
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

Sulfite and nitrite are often mixed in the gas and liquid of the slurry material, which will easily cause pollution again after entering the atmosphere; and in the carried aerosols, especially the PM2.5 aerosol particles entrained in these clean flue gases enter the atmosphere Combining with water and other harmful substances can form smog, causing secondary pollution to the atmosphere and affecting people's health

Method used

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  • Dual flue gas purification technology and purification system thereof

Examples

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Embodiment 1

[0024] Such as figure 1 As shown, a double flue gas purification process of the present invention includes one-stage wet purification. In the one-stage wet purification, the original flue gas enters the absorption tower 6 through the original flue 1 for wet purification treatment. The final clean flue gas enters the clean flue 8; it also includes secondary adsorption purification, in which the clean flue gas obtained in the primary wet purification is purified.

[0025] The above double flue gas purification process can be carried out by the following double flue gas purification system, such as figure 1 As shown, in the double flue gas purification system, it includes a primary wet purification device, which includes the original flue 1, the absorption tower 6 and the clean flue 8 connected to each other in sequence; it also includes the A secondary adsorption purification device connected to the primary wet purification device, the secondary adsorption purification device i...

Embodiment 2

[0029] Such as figure 1 As shown, a double flue gas purification process of the present invention, its basic implementation steps are the same as in Example 1, specifically, in the secondary adsorption purification, the clean flue gas is carried out by the purifier 9 set in the clean flue Adsorption and purification: The purifier 9 is filled with an adsorbent, and the adsorbent is in contact with the clean flue gas to adsorb and purify the clean flue gas; the saturated adsorbent after absorbing the clean flue gas is regenerated and recovered by the adsorbent regeneration device. As a result, while the flue gas is purified through double purification, higher environmental protection requirements are met, and resources are recycled to avoid waste; among them, other clean flue gas can also be set for the purifier 9 on the way before discharge into the atmosphere.

[0030] In the above embodiments, the adsorbent is preferably activated coke; preferably, the pores of the activated...

Embodiment 3

[0033] Such as figure 1 As shown, a double flue gas purification process of the present invention, its basic implementation steps are the same as in Example 2. Specifically, in order to better realize the recycling of adsorbents and to avoid other pollution and waste caused by adsorbents, In the regeneration and recovery of the adsorbent, the saturated adsorbent is sequentially subjected to primary screening, thermal desorption and secondary screening for regeneration and recovery treatment, and the regenerated adsorbent is transported to the purifier for reuse, pyrolysis The desorption liquid generated by the absorption is transported to the absorption tower to react with the absorption slurry in the tower for reprocessing, and the sieved solid waste is collected by the waste collector 20 or other treatment.

[0034] The above double flue gas purification process can be carried out by the following double flue gas purification system, such as figure 1 As shown, the basic str...

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Abstract

The invention relates to a dual flue gas purification technology and a purification system thereof in the field of wet flue gas purification. The technology comprises primary wet purification and secondary adsorbing purification, wherein a clean flue gas obtained after raw flue gas is primarily purified enters a clean flue gas channel, and the clean flue gas obtained after the primary wet purification is processed by secondary adsorbing purification. The system comprises a primary wet purification device and a secondary adsorbing purification device, wherein the primary wet purification device comprises a raw flue gas channel, an adsorption tower and a clean flue gas channel which are sequentially connected with one another; the secondary adsorbing purification device is respectively connected with the clean flue gas channel and the adsorption tower. The technology disclosed by the invention is based on an optimized design, and stable in system operation, pollutants such as gas liquid slurry materials, dust, aerosol and the like mixed in the clean flue gas can be effectively controlled, especially, the substances such as sulphurous acid nitrite and the like forming particulate matters (PM)2.5 can be effectively prevented from entering the atmosphere, the environmental effect is significantly enhanced, secondary pollution of the clean flue gas to the atmosphere caused is effectively prevented, and the dual flue gas purification technology and purification system thereof are applicable to popularization and application in the field of flue gas purification.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a double flue gas purification process and a purification system in the field of wet flue gas purification. Background technique [0002] At present, among the technologies for purifying flue gas in coal power, chemical industry, metallurgy and other industrial production, wet purification technology is widely used, such as limestone-gypsum method, ammonia method, double alkali method, magnesium method, etc., but the application Existing wet flue gas purification treatment processes carry out flue gas treatment and the discharged net flue gas is also entrained with various substances, such as desulfurization and denitrification and other absorbent slurry material gas liquid, ammonia escaped in the ammonia process, dust and Aerosols etc. Sulfite and nitrite are often mixed in the gas and liquid of the slurry material, which will easily cause pollution again after en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D50/00B01D53/74
Inventor 王玥
Owner BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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