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A kind of desulfurization by-product prepares denitration agent clo 2 systems and methods

A technology for desulfurization by-products and by-products, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of high preparation cost and difficult to handle by-products, and achieves reduction of preparation cost, low cost, and economical preparation. cost effect

Active Publication Date: 2021-08-13
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0016] The object of the invention is to solve the problem of ClO in flue gas denitrification engineering application 2 Problems of high preparation cost and difficult to handle by-products

Method used

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  • A kind of desulfurization by-product prepares denitration agent clo <sub>2</sub> systems and methods

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Embodiment Construction

[0039] The following is attached figure 1 The technical solution of the present invention is described in detail.

[0040] Such as figure 1 As shown, this embodiment provides a desulfurization by-product to prepare denitrification oxidant ClO 2 The system includes a desulfurization tower 1, a concentration pool 2, a desulfurization slurry storage tank 3, a sodium chlorate solution storage tank 4, a chlorine dioxide generator 5, a chlorine dioxide absorption device 6, an automatic control device 7, and by-product recovery Device 8 and spray denitrification tower 9;

[0041] Among them, the flue gas and the ammonia desulfurization stock solution undergo an absorption reaction in the desulfurization tower 1, and the absorbed desulfurization slurry is concentrated in the concentration pool 2, and stored in the desulfurization slurry storage tank 3 after concentration;

[0042] The desulfurization slurry storage tank 3 is connected to the chlorine dioxide generator 5 through a p...

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Abstract

The invention discloses a system for preparing denitration agent chlorine dioxide from desulfurization by-products, comprising a desulfurization tower (1), a concentration pool (2), a desulfurization slurry storage tank (3), a sodium chlorate solution storage tank (4), two Chlorine oxide generator (5), chlorine dioxide absorption device (6), automatic control device (7), by-product recovery device (8) and spray denitrification tower (9). Also disclosed is a method for preparing denitrification agent chlorine dioxide from desulfurization by-products, the system and method not only solve the problem of ammonia desulfurization 4 ) 2 SO 3 It is difficult to oxidize and deal with the problem, and at the same time, it proposes a low-cost, by-product recyclable denitrification agent ClO that combines ammonia desulfurization with oxidation denitrification. 2 method of preparation.

Description

technical field [0001] The invention belongs to the field of industrial air pollution control, and in particular relates to a method of using ammonium sulfite, a by-product of ammonia desulfurization, as a reducing agent to prepare denitrification oxidant ClO 2 Methods. Background technique [0002] Sulfur dioxide (SO 2 ) and nitrogen oxides (NO x ) is the main air pollutant and the main factor affecting air quality, while SO in the air 2 and NOx are also one of the important causes of smog, so the removal of SO in flue gas 2 and NOx urgently. [0003] Ammonia desulfurization process has become the main desulfurization technology because of its advantages of fast desulfurization speed, high efficiency and high economic value of desulfurization products. Ammonia desulfurization is the use of ammonia water to absorb SO in flue gas 2 Gas, first acid-base neutralization reaction, namely ammonia and SO 2 The reaction produces ammonium sulfite, which is a high-efficiency, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/02B01D53/76B01D53/56
CPCB01D53/56B01D53/76B01D2251/108B01D2258/0283C01B11/025
Inventor 张艳平张凡何学娟黄家玉王洪昌张浩王相凤王红梅石应杰王凡田刚谭玉玲龙红艳
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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