Desulfurization and denitrification system and technology thereof

A technology for desulfurization and denitrification, flue gas, applied in the field of desulfurization and denitrification system and its technology, can solve the problems of high cost, incomplete removal, low desulfurization and denitrification efficiency, etc., and achieve low cost, high desulfurization and denitrification efficiency, and long service life Effect

Inactive Publication Date: 2019-01-01
湖南长清蓝节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low desulfurization and denitrification efficiency, incomplete removal and high cost of traditional desulfurization and denitrification systems, and to provide a desulfurization and denitrification system with high removal efficiency and low cost and its process

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  • Desulfurization and denitrification system and technology thereof
  • Desulfurization and denitrification system and technology thereof
  • Desulfurization and denitrification system and technology thereof

Examples

Experimental program
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specific Embodiment 1

[0041] Such as Figures 1 to 3 As shown, a desulfurization and denitrification system of the present invention includes a flue gas pretreatment device 1, an induced draft fan 2, a spray tower 3 and a circulation pool 4 connected in sequence, and the spray tower 3 includes a cylindrical shell 301, The upper end of the casing 301 is provided with an air inlet 302 connected to the induced draft fan 2 and a nozzle 303 connected to the circulation pool 4, the casing 301 is provided with an inner cylinder 304, and the bottom of the inner cylinder 304 is provided with an opening 305 to communicate the inner and outer spaces of the inner cylinder 304, The height of the opening 305 is higher than the liquid level of the absorption liquid 311 at the bottom of the shell 301, and the top of the inner cylinder 304 is provided with an air outlet 306 to discharge the purified flue gas, and the air inlet 302 is arranged along the tangential direction so that the flue gas spirals along the side...

specific Embodiment 2

[0045] Such as figure 1 , 4 , 5, a desulfurization and denitrification system of the present invention includes a flue gas pretreatment device 1, an induced draft fan 2, a spray tower 3 and a circulation pool 4 connected in sequence, and the spray tower 3 includes a cylindrical shell 301, the upper end of the casing 301 is provided with an air inlet 302 connected to the induced draft fan 2 and a nozzle 303 connected to the circulation pool 4, the casing 301 is provided with an inner cylinder 304, and the bottom of the inner cylinder 304 is provided with an opening 305 to make the internal and external space of the inner cylinder 304 The height of the opening 305 is higher than the liquid level of the absorption liquid 311 at the bottom of the shell 301, the top of the inner cylinder 304 is provided with an air outlet 306 to discharge the purified smoke, and the air inlet 302 is set along the tangential direction so that the smoke flows along the side of the shell 301. wall sp...

specific Embodiment 3

[0049] Such as Image 6 with Figure 7 As shown, another embodiment of the communication pipe 309, the communication pipe 309 is a double circular ring connected, the outer ring of the communication pipe 309 is between the outer shell 301 and the inner cylinder 304 and is higher than the absorption liquid level at the bottom of the outer cylinder 301 For the entry of flue gas, the inner ring of the connecting pipe 309 is in the inner cylinder 304 and is lower than the liquid level of the absorption liquid 311 at the bottom of the inner cylinder 304. The inner ring is evenly distributed with multiple exhaust ports 310 along the circumferential direction, and the exhaust ports 310 are inclined It is set so that the flue gas spirals up in the absorption liquid 311 .

[0050] The rest of the features are the same as those in Embodiment 2 and will not be described in detail.

[0051] Such as Figure 8 As shown, the desulfurization and denitrification method of the present invent...

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Abstract

The invention relates to the technical field of chemical engineering, in particular to a desulfurization and denitrification method. The desulfurization and denitrification method comprises the following steps: (1) preprocessing boiler smoke through smoke preprocessing equipment; (2) sending preprocessed smoke into a sprinkling tower by an induced draft fan, wherein absorption liquid is the mixedliquid of sodium chlorite and sodium hypochlorite; (3) discharging after the smoke is subjected to sprinkling, washing, foam absorption and filtering in the sprinkling tower; (4) pumping out the absorption liquid in a circulating pool, regularly sending to waste liquid processing equipment to be subjected to recovery processing. The desulfurization and denitrification method has the beneficial effects that wet-method desulfurization, denitrification and dust removal are integrated, the desulfurization and denitrification method is suitable for lower-temperature smoke purification, and investment is reduced; the sprinkling tower adopts four-level purification, including sprinkling, washing, foam absorption and filtering, desulfurization and denitrification efficiency is high, the dust removal efficiency of the desulfurization and denitrification method can be 96% or above, desulfurization efficiency can be 99% or above, and a purification effect is good; the sprinkling tower adopts spiral sprinkling purification, a liquid and gas mixing degree is high, reaction is sufficient, a liquid-gas ratio is low, L/Q is about 3, and purification efficiency is high.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a desulfurization and denitrification system and a process thereof. Background technique [0002] In recent years, my country's SO2 and NOx emissions have seriously polluted the environment, causing acid rain and other vicious natural disasters, and become one of the countries with the most serious SO2 and NOx pollution problems. The traditional single-function flue gas pollution control method requires a large investment and operation The cost is high. With the continuous improvement of national environmental protection requirements, the cost of flue gas pollution treatment is getting higher and higher, making it more and more difficult for enterprises to bear; therefore, the development of new technologies and new equipment for simultaneous desulfurization and denitrification has become a hot research topic at home and abroad. At present, The typical Wet-FGD+SCR combina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D53/14B01D50/00
CPCB01D53/14B01D53/1418B01D53/1481B01D53/18B01D2252/50B01D2258/0283B01D50/60
Inventor 陈钧陈长庚郭铮
Owner 湖南长清蓝节能环保科技有限公司
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