Comprehensive treatment method of sulfur-containing flue gas

A comprehensive treatment and flue gas technology, applied in the chemical industry, can solve the problems of difficult to achieve zero emission of sulfur dioxide, difficulty in desulfurization efficiency close to 100%, high operating cost, achieve high desulfurization and dust removal efficiency, ensure long-term stable operation, and reduce investment Effect

Active Publication Date: 2012-07-18
CHENGDU DEMEI ENG TECH
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  • Claims
  • Application Information

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Problems solved by technology

These methods have their own characteristics, and their shortcomings are also different, but they all have the following shortcomings: the desulfurization efficiency is difficult to approach 100%, and it is difficult to achieve zero emission of sulfur dioxide in the exhausted flue gas; Get practical use; running cost is relatively high

Method used

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  • Comprehensive treatment method of sulfur-containing flue gas
  • Comprehensive treatment method of sulfur-containing flue gas
  • Comprehensive treatment method of sulfur-containing flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The device settings of this embodiment are as follows figure 2 , 3 shown.

[0057] 1. Flue gas pre-dust removal

[0058] The temperature of the mixed flue gas of lapis lazuli high-temperature coal reduction flue gas, Claus sulfuric acid tail gas incineration flue gas, and carbonization tower pressure relief incineration flue gas is 200 °C, and the composition (mol) is:

[0059] CO 2 12~18%;O 2 6~7%;N 2 +Ar 75~82%;

[0060] SO 2 4000mg / Nm 3 Above; Dust 22~25g / Nm 3 .

[0061] Use the cyclone dust collector to reduce the dust content in the flue gas to 5000mg / Nm 3 , and then use the electric precipitator to reduce the dust content in the flue gas to 600mg / Nm 3 , Flue gas temperature 150 ~ 220 ℃. Then send it to the water washing tower for washing, cooling and dust removal, the standard flow rate is 24000Nm 3 / h, working condition flow rate 41582.42m 3 / h. The process conditions of the washing tower are as follows:

[0062] 1) Flue gas entering the tower...

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Abstract

The invention belongs to the technical field of chemical industry, in particular to a comprehensive treatment method of sulfur-containing flue gas. The comprehensive treatment method comprises the following steps: (a) dedusting through a bath tower; (b) desulphurizing through a desulphurizing and absorbing tower, wherein , dewatering the sulfur-containing flue gas after being treated by water washing and dedusting in the step (a). When the method is applied to purify the sulfur-containing flue gas, the efficiency of dedusting and removing sulfur dioxide and hydrogen sulfide reaches 100 percent, thus zero discharge of pollutants in exhaust smoke can be realized.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a comprehensive treatment method for sulfur-containing flue gas. Background technique [0002] Purification of sulfur-containing flue gas usually includes two steps of water washing, dust removal and desulfurization. The traditional washing process of water washing tower is that the flue gas enters from the lower part of the tower, and the washing water enters from the upper part of the tower. It contacts with the flue gas in reverse to wash the dust in the flue gas. , into the washing water, and the dusty washing water flows out from the bottom of the washing tower. To achieve the ideal washing dust removal and cooling effect, a large amount of washing water is needed. [0003] At present, more than 200 flue gas desulfurization technologies have been studied at home and abroad, and more than 40 have been applied in industry. The methods of industrial application are m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00C01D5/14B01D47/14B01D53/18B01J19/30B01J19/32
Inventor 郭克雄郭毛晓春黄云霞
Owner CHENGDU DEMEI ENG TECH
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