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Industrial flue gas synchronous desulfurization and denitration method

An industrial flue gas, desulfurization and denitrification technology, applied in the field of flue gas desulfurization and denitrification, can solve the problems of high cost and secondary pollution, and achieve the effect of low processing cost, secondary pollution and simple process

Active Publication Date: 2019-01-04
SHENZHEN QIANHAI ZHONGSHENG ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0005] Aiming at the problems of desulfurization and denitrification existing in industrial flue gas desulfurization and denitrification that need to be processed step by step, and the cost is high, and secondary pollution is easy to occur, the present invention provides a method for synchronous desulfurization and denitrification of industrial flue gas

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  • Industrial flue gas synchronous desulfurization and denitration method

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Embodiment 1

[0040] A method for synchronous desulfurization and denitrification of industrial flue gas. Specifically, the content of sulfur dioxide in the flue gas components produced by a certain factory is 1000-3000 mg / m 3 , the nitrogen oxide content is 300~1000mg / m 3 . The simultaneous desulfurization and denitrification method comprises the following steps:

[0041] (1). Weigh 100g of anion ion exchange fiber, humidify the anion ion exchange fiber to a moisture content of 50%, and fill it into an ion exchange column;

[0042] (2). The above-mentioned industrial flue gas is cooled to 60°C, and the relative humidity of the industrial flue gas is 75% through the dust removal treatment and humidification treatment in the pretreatment chamber;

[0043] (3). Pressurize through the booster pump, inject the industrial flue gas treated in step (2) into the gas mixing chamber at a flow rate of 54L / h, pass into ozone for reaction, and control the molar ratio of ozone to nitric oxide to be 1.3...

Embodiment 2

[0049] A method for synchronous desulfurization and denitrification of industrial flue gas. Specifically, the content of sulfur dioxide in the flue gas components produced by a certain factory is 1000-3000 mg / m 3 , the nitrogen oxide content is 300~1000mg / m 3 . The simultaneous desulfurization and denitrification method comprises the following steps:

[0050] (1). Weigh 1.5kg of anion ion exchange fiber, humidify the anion ion exchange fiber to a moisture content of 50%, and fill it into an ion exchange column;

[0051] (2). The above-mentioned industrial flue gas is cooled to 60°C, and the relative humidity of the industrial flue gas is 75% through the dust removal treatment and humidification treatment in the pretreatment chamber;

[0052] (3). Pressurized by a booster pump, the industrial flue gas treated in step (2) is 3.2m 3 The flow rate of / h is injected into the gas mixing chamber, and ozone is introduced to react, and the molar ratio of ozone to nitric oxide is con...

Embodiment 3

[0058] A method for synchronous desulfurization and denitrification of industrial flue gas. Specifically, the content of sulfur dioxide in the flue gas components produced by a certain factory is 1000-3000 mg / m 3 , the nitrogen oxide content is 300~1000mg / m 3 . The simultaneous desulfurization and denitrification method comprises the following steps:

[0059] (1). Weigh 100g of anion ion exchange fibers, and pack the anion ion exchange fibers into an ion exchange column;

[0060] (2). The above-mentioned industrial flue gas is cooled to 60°C, and the relative humidity of the industrial flue gas is 75% through the dust removal treatment and humidification treatment in the pretreatment chamber;

[0061] (3). Pressurize through the booster pump, inject the industrial flue gas treated in step (2) into the gas mixing chamber at a flow rate of 54L / h, pass into ozone for reaction, and control the molar ratio of ozone to nitric oxide to be 1.35 ;

[0062] (4). Pass the industrial ...

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Abstract

The invention relates to the technical field of flue gas desulfurization and denitration, and in particular, provides a method for synchronously desulfurizing and denitrifying industrial flue gas, which comprises the following steps at least: S01. mixing the industrial flue gas which has been cooled, dedusted and humidified with ozone to convert the nitric oxide in the industrial flue gas into high-valence nitrogen oxides; S02. carrying out humidifying treatment of the anion ion exchange fiber in an ion exchange tower, then introducing the industrial flue gas treated in the step S01, of which,the sulfur dioxide and the high-valence nitrogen oxides exchange ions with the anion ion exchange fiber, and are adsorbed by the anion ion exchange fiber so as to obtain a gas reaching the dischargestandard. In the method, sulfur dioxide and nitrogen oxide can be removed synchronously, the removal rate of sulfur dioxide and nitrogen oxide reaches higher than 99.0%, and in the finally dischargedflue gas, the content of the sulfur dioxide and the nitrogen oxide are far lower than the national discharge standard, the method is suitable for the treatment of industrial flue gas.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization and denitrification, and in particular relates to a method for synchronous desulfurization and denitrification of industrial flue gas. Background technique [0002] Industrial flue gas mainly refers to the flue gas and dust produced by the combustion of industrial boilers. my country is a country with a coal-based energy structure. With the rapid development of my country's economy, sulfur dioxide (SO 2 ), nitrogen oxides (NO x ) accounted for more than 60% of the total emissions. With SO 2 , NO x With the increase of emissions, the speed of acid rain in my country is also extremely fast. The severe acid precipitation and fragile ecosystem have caused serious losses to the economy of our country. The direct economic losses caused by acid rain pollution to forests and crops every year have reached tens of billions RMB. Therefore, a substantial reduction in SO 2 , NO x emissi...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/76B01D53/81B01D53/56B01D53/60
CPCB01D53/56B01D53/60B01D53/75B01D53/76B01D53/81B01D2258/0283Y02A50/20
Inventor 史磊周从章樊振江王卫强李龙博刘武张瑞超
Owner SHENZHEN QIANHAI ZHONGSHENG ENVIRONMENTAL PROTECTION TECH
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