Converter coal gas dry-method bag-type dust collecting and waste heat recovery method

A technology of converter gas and bag dust removal, which is applied in the direction of manufacturing converters, improving process efficiency, and improving energy efficiency. It can solve the problems of heavy equipment maintenance workload and unstable smoke and dust emission concentration, and save investment and land occupation. , stable dust removal effect and low investment

Inactive Publication Date: 2010-03-17
CISDI ENG CO LTD
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Problems solved by technology

However, the emission concentration of smoke and dust is un

Method used

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  • Converter coal gas dry-method bag-type dust collecting and waste heat recovery method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following specific methods.

[0026] The movable fume hood 2 on the upper part of the converter 1 is connected to the vaporization cooling flue 3, and then connected to the coarse dust removal facility 4, the first-stage heat exchanger 5, the dry bag dust removal facility 6, the second-stage heat exchanger 7, and the spray cooling device 8 , frequency conversion speed regulating blower fan 9 and gas automatic analysis device 10 are respectively connected to blast furnace gas pipeline 12, combustion and diffusion tower 13 and gas cabinet 14 through three-way valve 11.

[0027] The dust collected by the dry bag dust removal facility 6 is collected and recycled by a pneumatic conveying device.

[0028] Converter gas dry bag dust removal and waste heat recovery methods are as follows:

[0029] 1) Dust-...

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Abstract

The invention belongs to the technical field of separating operation and heating engineering, and in particular relates to a converter coal gas dry-method bag-type dust collecting and waste heat recovery method which is characterized in that: dusty high-temperature converter coal gas from a converter passes through a movable fume hood and an evaporation cooling duct to enter in a rough de-dustingfacility, and then the coal gas carries out dust removal and temperature reduction by a heat pipe exchanger and a dry-method bag-type dust collecting device, the coal gas which carry out dust removaland temperature reduction is treated differently according to different constituents of the converter coal gas after temperature reduction is carried out by a spraying device and constituent analysisis carried out. The invention can carry out effective recovery utilization to the converter coal gas, and the waste gas of the converter coal gas is fully utilized, thereby achieving energy-saving andenvironmental-protection purposes under the condition of low investment and high efficiency (dust content of the purified dust is less than 5mg/Nm<3>).

Description

technical field [0001] The invention belongs to the technical field of separation operation and heating engineering, in particular to a method for converter gas dry bag dust removal and waste heat recovery. Background technique [0002] With the progress of industrial economy and human civilization, more and more attention has been paid to environmental protection issues and energy conservation in industrial production, and the full recovery and utilization of industrial waste heat and waste energy has also surpassed pure economic considerations. [0003] The converter gas produced in the converter steelmaking process contains a large amount of heat and has a high recovery value. At present, the methods for converter gas purification and waste heat recovery at home and abroad mainly include the following categories: 1) Traditional OG method: This method is a converter flue gas purification and purification method successfully developed by Nippon Steel and Yokoyama Industrial...

Claims

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Application Information

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IPC IPC(8): C21C5/40
CPCY02P10/25
Inventor 钱卫强陈凌戴连鹏李佳楣
Owner CISDI ENG CO LTD
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