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Flue gas purification process through converter semi-dry process

A flue gas purification process, semi-dry technology, applied in the direction of improving process efficiency, manufacturing converters, improving energy efficiency, etc., can solve the problems of poor operation safety and stability, difficult wastewater treatment, and low dust removal accuracy, so as to reduce wastewater Emissions, reduction of equipment maintenance workload, effect of reduction of emissions

Inactive Publication Date: 2010-01-13
SHANGHAI XZS HEAVY MACHINERY SYST INTEGRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a converter semi-dry flue gas purification process, which can effectively solve the problems of large water consumption, difficult wastewater treatment, large power consumption, low dust removal accuracy, and poor operation safety and stability in the prior art.

Method used

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Embodiment Construction

[0009] The invention relates to a converter semi-dry flue gas purification process, which is characterized in that it comprises the following steps:

[0010] 1) Start the heat pipe heat exchanger;

[0011] 2) Lead the high-temperature flue gas generated during the operation of the converter into the heat pipe heat exchanger;

[0012] During the operation of the converter of the metallurgical furnace, the high-temperature converter flue gas of 200 ℃ ~ 1200 ℃ will be generated. Under the suction of the gas machine, it enters the heat pipe heat exchanger and performs indirect heat exchange with the water outside the heat pipe. After sufficient heat exchange treatment, it is discharged The flue gas can be only 10°C higher than the indirect heating medium (such as water vapor, hot water, etc.), which not only reduces the temperature of the flue gas, but also fully recovers and utilizes the waste heat to obtain hot water as a by-product.

[0013] 3) Introduce the flue gas mixed wit...

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Abstract

The invention relates to a flue gas purification process through a converter semi-dry process, which comprises the following steps: 1) starting a heat pipe exchanger; 2) introducing high temperature flue gas generated during the operation of a converter into the heat pipe exchanger; 3) introducing the flue gas mixed with water vapor into a spray-cooling wet-type electric dust removing column; and 4) sending the dedusted gas into a gas holder for storage by using a gas engine. The process has the advantages of effectively reducing the emission of toxic gases, saving electric energy and water, having safe and reliable operation, reducing the drainage of waste water and reducing the cost, thus the process is widely applied to precise dedusting of flue gas in the industries of metallurgy, power stations, building materials, chemical engineering and the like, and is particularly suitable for the precise dedusting of high temperature flue gas.

Description

technical field [0001] The invention relates to a converter semi-dry flue gas purification process. Background technique [0002] The converter waste gas in the metallurgical industry mainly comes from the smelting process, especially during the oxygen blowing smelting period, a large amount of waste gas is produced. The exhaust gas has a high dust concentration and a high concentration of toxic gaseous substances such as carbon monoxide. Due to the high temperature of the flue gas from the metallurgical furnace, the dust removal and purification of the flue gas from the metallurgical furnace is usually carried out by means of flue gas humidification and cooling-electrostatic precipitator, humidification and dust removal process bag dust removal or German LT dry dust removal. However, these exhaust gas treatment methods often have problems such as large water consumption, difficult wastewater treatment, large power consumption, low dust removal accuracy, and poor operationa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/40
CPCY02P10/25
Inventor 孙承波毛健
Owner SHANGHAI XZS HEAVY MACHINERY SYST INTEGRATION