Biphase rectification flue gas desulfurization process

A desulfurization process and two-phase rectification technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of increased energy consumption in post-processing, easy blockage of heat exchanger tubes, and increased sewage discharge, etc. To achieve the effect of fast reaction speed, energy saving and consumption reduction, device cost and maintenance cost, and system pressure drop reduction

Inactive Publication Date: 2011-11-02
JIANGSU ZHENGTONG HONGTAI INC
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

There are several problems with this process: first, the tubes of the heat exchanger are easy to block, and they are cleaned once every half a month on average, which seriously affects production; second, manual cleaning is used, and the work intensity is high; , the product loss is large, and the amount of sewage discharge also increases, resulting in an increase in energy consumption for post-processing

Method used

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Embodiment Construction

[0011] A two-phase rectification flue gas desulfurization process, comprising the following steps: 1), setting an absorption tower; 2), connecting flue gas; 3), passing limestone slurry; 4), collecting after reaction,

[0012] 1. The absorption tower is a spray tower, the upper part of the tower is provided with a double-layer spray layer, the spray layer pipe is equipped with a spiral nozzle, and above the spray layer is provided with a double-layer swirl plate for demisting device; the liquid storage section at the bottom of the absorption tower is used as the circulation tank of the absorption tower.

[0013] 2. Access to flue gas; lime milk slurry preparation system includes lime storage bin, digestion tank, lime milk slurry tank and lime milk slurry pump.

[0014] 3. Limestone slurry is introduced; including neutralization regeneration tank, inclined tube settling tank, desulfurization product tank, regeneration liquid tank, plate and frame filter press, filter press pump...

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Abstract

The invention discloses a biphase rectification flue gas desulfurization process, which comprises the following steps of: 1) arranging an absorption tower; 2) introducing flue gas; 3) introducing limestone slurry; and 4) collecting after reaction. The flow field is optimized, and the aims of saving energy, reducing consumption, and reducing device cost and maintenance cost are fulfilled. Moreover, when internal parts of the absorption tower are maintained, a temporary maintenance platform is not needed to be constructed, and the internal parts can be directly maintained and replaced.

Description

technical field [0001] The invention relates to the technical field of organic chemical heat transfer, in particular to a two-phase rectification flue gas desulfurization process of a shell-and-tube heat exchanger Background technique [0002] Maleic anhydride (referred to as maleic anhydride) is an important basic organic chemical raw material and the third largest anhydride in the world after acetic anhydride and phthalic anhydride. It is mainly used in the production of nearly 100 kinds of downstream fine chemical organic intermediates and special chemicals such as unsaturated polyester resin, fumaric acid, succinic acid, lubricating oil additives, agricultural chemicals, heat-resistant styrene resin, etc. In recent years, the low-pressure hydrogenation of maleic anhydride to γ-butyrolactone, 1,4-butanediol and the hydrogenation of maleic acid to tetrahydrofuran have been successfully developed, making maleic anhydride a high value-added product for the production of 1,4-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/48
Inventor 胡俊华
Owner JIANGSU ZHENGTONG HONGTAI INC
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