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Desulphurization and denitration device and method

A technology of desulfurization and denitrification and layer arrangement, which is applied in the direction of chemical instruments and methods, separation methods, and separation of dispersed particles, can solve the problems of high investment and operation costs and low oxidation efficiency, reduce investment land occupation and operation costs, and improve detoxification. The effect of removing rate and reducing injection volume

Inactive Publication Date: 2015-09-30
ZHONGJING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device and method of the present invention are especially suitable for the treatment of flue gas containing sulfur oxides and nitrogen oxides in coal-fired boilers, steel sintering machines, pellets, etc., and can make magnesium wet desulfurization and H 2 o 2 Oxidative denitrification technology has been more efficiently utilized synergistically, giving full play to the advantages of magnesium wet desulfurization and solving the problem of H 2 o 2 Ineffective decomposition, low oxidation efficiency, high investment and operation costs, etc. 2 o 2 Problems with oxidation and denitrification technology

Method used

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  • Desulphurization and denitration device and method

Examples

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Embodiment 1

[0125] This embodiment relates to a desulfurization and denitrification device and method of the present invention. Such as image 3 As shown, the desulfurization and denitrification device includes desulfurization and denitrification equipment 21 and hydrogen peroxide supply equipment (including H 2 o 2 storage tank 28 and injection pump 29) and the circulating pump 22 as the slurry circulation conveying equipment, the inside of the desulfurization and denitrification equipment 21 is provided with a spray absorbing area (comprising the first layer of spray absorbing layer 23, the second layer of spray absorbing layer 24 and The third layer spray absorbing layer 25), H 2 o 2 The oxidation reaction layer 210 and the slurry storage area 212 are sprayed. Among them, H 2 o 2 The spray oxidation reaction layer 210 is arranged between the first spray absorption layer 23 and the second spray absorption layer 24 . The slurry storage area 212 is provided with a hydrogen peroxide...

Embodiment 2

[0130] This embodiment relates to another desulfurization and denitrification device and method of the present invention. The difference between this desulfurization and denitrification device and the desulfurization and denitrification device in Example 1 is that H 2 o 2 The spray oxidation reaction layer is arranged between the second spray absorption layer and the third spray absorption layer. The distance between the first spray absorbing layer and the second spray absorbing layer is 2.0 meters. The distance between the second spray absorbing layer and the third spray absorbing layer is 3.0 meters. The hydrogen peroxide spray oxidation reaction layer is 1.6 meters away from the second spray absorption layer. other settings and figure 1 The device shown in Example 1 is the same.

[0131] The desulfurization and denitrification method using this desulfurization and denitrification device is the same as the desulfurization and denitrification method in Example 1. The ma...

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Abstract

The invention discloses a desulphurization and denitration device and method. The desulphurization and denitration device comprises desulphurization and denitration equipment, slurry cyclic delivery equipment and hydrogen peroxide supplement equipment. A spraying and absorption zone, a hydrogen peroxide spray oxidation reaction layer and a slurry storage zone are arranged in the desulphurization and denitration equipment. The hydrogen peroxide spray oxidation reaction layer is arranged in the spraying and absorption zone. The device and method realize combination of magnesium desulfurization and hydrogen peroxide oxidation denitration, improve an arrangement position of a hydrogen peroxide spray oxidation reaction layer in the existing device, provide the optimal hydrogen peroxide excitation conditions, improve nitrogen oxide and sulfur dioxide remove rates, reduce a H2O2 injection amount, save a cost, and prevent an explosion risk caused by superfluous H2O2 and a high temperature. Compared with the existing device and method, the device and method simplify equipment and greatly reduce desulphurization and denitration early stage construction investment, floor space and operation cost.

Description

technical field [0001] The invention relates to a desulfurization and denitrification device and method, in particular to a device and method for removing sulfur oxides and nitrogen oxides in flue gas. Background technique [0002] SO 2 It is one of the main pollutants in the atmosphere and an important indicator to measure whether the atmosphere is polluted. It has great harm to human health, environment and other aspects, and is the main cause of acid rain. China is one of the few countries in the world where coal is the main energy source. A large amount of coal burning leads to SO in my country 2 Pollution and the resulting acid deposition pollution are very serious. my country's SO 2 Pollution control started late, and the current situation is still very serious. At the same time, NOx emissions keep increasing, so NOx pollution control has also been highly valued by relevant state departments. The Ministry of Environmental Protection has listed the control of NOx...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/78B01D53/60
CPCY02A50/20
Inventor 童裳慧
Owner ZHONGJING ENVIRONMENTAL TECH CO LTD
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