Semi-dry flue gas purification system and method based on carbon material oxidative denitration

A flue gas purification system, semi-dry technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as safety hazards and escape, and achieve a small footprint, compact equipment, and low water consumption. Effect

Pending Publication Date: 2018-05-11
CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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Problems solved by technology

In addition, the SCR denitrification method uses NH 3 As a reducing agent, ammonia gas is a dangerous product, and there are certa...

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  • Semi-dry flue gas purification system and method based on carbon material oxidative denitration
  • Semi-dry flue gas purification system and method based on carbon material oxidative denitration

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0045] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0046] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0047] Such as figure 1 Shown is a schematic structural view of the semi-dry flue gas purification system of the present invention, the removal system is connected to the boiler 12, the tail flue of the boiler 12 is connected to the air preheater 11, and the outlet of the air preheater 11 is connected to the standpipe In the desulfurization reactor 3, the active calcium in the fly ash is used to remove the SO in the flue gas. 2 , SO 3and other acid gases. The outlet of the desulfurization reactor 3 is connected with a dedusting unit for dedusting ...

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Abstract

The invention discloses a semi-dry flue gas purification system and method based on carbon material oxidative denitration. The semi-dry flue gas purification system based on the carbon material oxidative denitration includes a desulfurization reactor, a dust removal unit, a spent absorbent storage, activation and humidification unit, and a denitration reactor; the outlet of the desulfurization reactor and the dust removal unit are connected; the flue gas outlet of the dust removal unit is connected with the denitrification reactor; the outlet of the denitration reactor is connected in turn with an induced draft fan and a chimney; the outlet of a dust hopper of the dust removal unit is connected with the spent absorbent storage, activation and humidification unit. The semi-dry flue gas purification system realizes the coupling of denitrification, desulfurization and dust removal technologies, and has the advantages of compact equipment and small floor area. A semi-dry method is used, water consumption is small, and the final product is solid. Waste water is not needed. The process is simple and can be widely used in the process of industrial flue gas treatment.

Description

technical field [0001] The invention relates to a flue gas purification device and method thereof, in particular to a semi-dry flue gas purification system and method based on oxidation and denitrification of carbon materials. Background technique [0002] At present, SCR is the most widely used flue gas denitrification technology in the industry. The reaction temperature of high-temperature catalysts is required to be around 350°C, and it needs to be arranged before dust removal and desulfurization. High-sulfur and high-dust flue gas has a great negative effect on the activity and service life of the catalyst. The low-temperature SCR process puts denitrification after desulfurization and dust removal, but the reaction temperature is generally above 150°C, and the temperature of the flue gas after desulfurization is generally below 70°C, which requires that the flue gas needs to be reheated before denitrification. In addition, the SCR denitrification method uses NH 3 As a r...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/80B01D53/50B01D53/86B01D53/56B01D53/02B01D50/00
CPCB01D50/00B01D53/02B01D53/50B01D53/75B01D53/80B01D53/8628B01D2253/102B01D2255/65B01D2251/404B01D2258/0283
Inventor 王乃继李婷张鑫肖翠微王永英刘振宇程晓磊尚庆雨梁兴杨石陈隆牛芳崔豫泓刘增斌罗伟刘羽张广琦孟长芳贾东亮徐大宝李小炯纪任山王乾蔡鹏魏琰荣郭飞谭静白一飞于世雷
Owner CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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