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High-temperature flue gas multi-pollutant integrated coordinated treatment process and high-temperature flue gas and multi-pollutant integrated coordinated treatment equipment

A technology for high temperature flue gas and pollutants, which is applied in gas treatment, chemical instruments and methods, dispersed particle filtration, etc. It can solve problems such as difficult governance, large system footprint, and high temperature resistance of cloth bags, saving equipment investment. and operating costs, saving equipment investment, and eliminating the need for secondary heating

Pending Publication Date: 2019-11-19
张家港市锦明环保工程装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Simple dry desulfurization can be used at high temperature but has low desulfurization efficiency; semi-dry and wet desulfurization have high efficiency but can only operate at low temperatures ranging from tens to over 100 degrees; SNCR denitrification efficiency is low, SCR efficiency is high but investment is large ;Cyclone dust removal and water film dust removal have low efficiency and high resistance and high energy consumption. It is difficult for electrostatic dust removal to achieve ultra-low emission below 30mg / Nm3 and high energy consumption. Bag dust removal has high efficiency and ultra-low emission but is not resistant to high temperature and can only operate at low temperature
[0004] At present, the application of several independent technologies is very common, but there are not many integrated process technologies that completely integrate the treatment of several major pollutants. At present, the integrated desulfurization and dust removal technology that integrates desulfurization and dust removal is more common, such as NID desulfurization and dust removal integrated technology, CFB flue gas circulating fluidized bed desulfurization technology, SDA rotary spray desulfurization technology, etc. There is no mature and perfect technology for fully integrating desulfurization, denitrification and dust removal.
[0005] Especially for high-temperature, multi-pollutant and high-concentration industrial waste gas, it is difficult to treat. The traditional treatment process is generally divided into three systems: denitrification, desulfurization, and dust removal. The system occupies a large area, many equipment, large investment, and complex process systems. , long process flow, many system failure points, high failure rate, heavy operation and maintenance workload, etc.

Method used

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Embodiment 1

[0038] as attached figure 1 with 2 As shown, a kind of high-temperature flue gas multi-pollutant integrated collaborative treatment equipment of the present invention includes:

[0039] A heat exchange device 1, one end of the heat exchange device 1 is connected to the kiln 01 for heat exchange treatment of the flue gas from the kiln; and,

[0040] Ceramic filter element sulfur dust removal device 2, the ceramic filter element sulfur dust removal device 2 is connected with the other end of the heat exchange device 1 through the flue 3; A desulfurizing agent supply device 4 and a denitration reducing agent supply device 5 for providing desulfurizing agent and denitrifying reducing agent; a ceramic filter element sulfur dust and nitrate removing device 2 is provided with a ceramic filter tube 201 for adsorbing SCR catalyst, and a horizontal air inlet 202 is provided at the lower end , the upper end is provided with a flue gas outlet 203; the surface of the ceramic filter tube ...

Embodiment 2

[0048] High-temperature flue gas multi-pollutant integrated collaborative treatment process: the entire process is completed under completely dry and water-free conditions. Firstly, desulfurize the flue gas that comes out of the kiln and passes through the heat exchange device. After heat exchange, the temperature is 320-350°C, so that the SO 2 with Ca(OH) 2 The reaction produces CaSO 3 and CaSO 4 At the same time, the flue gas is dedusted to remove the desulfurization ash and dust particles in the flue gas. When passing through the catalytic composite ceramic tube, the NO in the flue gas X with NH 3 N 2 and H 2 O, the treated clean flue gas is discharged from the chimney. The process is simple, the reaction speed is fast, the desulfurization and denitrification efficiency is high, the system energy consumption is low, and there is no waste water. It is very suitable for the purification of industrial kiln waste gas with small flue gas flow.

[0049] The core equipment...

Embodiment 3

[0072] It was put into use in the environmental protection project of Henan Huaxing Glass Co., Ltd., and realized the integrated and coordinated treatment of sulfur, dust, nitrate and multi-pollutants in a set of equipment, with high desulfurization, dust removal and denitrification efficiency (up to NO X 2 X 2 <400, PM<30), the effect is remarkable. The project investment cost is saved by 15% compared with the traditional process, and the operation cost is reduced by more than 30% compared with the traditional process.

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Abstract

The invention discloses a high-temperature flue gas multi-pollutant integrated coordinated treatment process and high-temperature flue gas and multi-pollutant integrated coordinated treatment equipment. The equipment comprises: a heat exchange device, wherein one end of the heat exchange device is connected to a kiln, the other end of the heat exchange device is connected to a ceramic filtering core desulfurization dust-removing denitrification device through a flue channel, the flue channel is provided with a desulfurization agent supply device and a denitrification reducing agent supply device, a ceramic filtering pipe for adsorbing a SCR catalyst is arranged inside the ceramic filtering core desulfurization dust-removing denitrification device, the lower end of the ceramic filtering pipe is provided with a horizontal wind inlet, the upper end of the ceramic filtering pipe is provided with a flue gas outlet, and the surface of the ceramic filtering pipe is provided with a powder cakelayer; an ash cleaning device, wherein the ash cleaning device comprises a compressed air blowing mechanism arranged above the ceramic filtering core desulfurization dust-removing denitrification device, and performs pulse ash cleaning on the ceramic filtering pipe; and an ash discharge mechanism arranged below the ceramic filtering core desulfurization dust-removing denitrification device. According to the present invention, the equipment can synchronously control and reduce the emission of multiple pollutants so as to save the equipment investment and the operating cost and prevent the lowcomprehensive use efficiency caused by the use of the separate desulfurization dust-removing denitrification flue gas purification treatment system.

Description

technical field [0001] The invention relates to a high-temperature flue gas multi-pollutant integrated and coordinated treatment process and equipment, belonging to the technical field of environmental protection. Background technique [0002] For containing SO X and other acid gases, NO X High-temperature industrial waste gas or flue gas treatment of dust and dust, there are many kinds of technical processes on the market at present, but there are mainly independent system processes for processing various air pollutant components, such as the treatment of SO X Dry desulfurization, semi-dry desulfurization, wet desulfurization of acid gases, etc., to deal with NO X SCR / SNCR and other denitrification technologies, dust removal technologies such as cyclone dust removal, water film dust removal, electrostatic dust removal and bag dust removal. [0003] Simple dry desulfurization can be used at high temperature but has low desulfurization efficiency; semi-dry and wet desulfur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/81B01D53/86B01D53/90B01D46/00B01D46/24B01D53/50B01D53/56B01D53/68
CPCB01D53/75B01D53/8631B01D53/90B01D53/81B01D53/508B01D46/2403B01D53/68B01D2258/0283B01D2251/404B01D2251/604B01D2251/2062B01D2257/2045B01D2257/2047B01D46/72B01D46/58
Inventor 张晓亮王汉平
Owner 张家港市锦明环保工程装备有限公司