Physical-sensible-heat recovery method and device of converter flue gas

A technology of sensible heat recovery and converter flue gas, applied in furnaces, furnace components, waste heat treatment, etc., can solve problems such as energy waste, and achieve the effect of reducing water consumption and cooling range

Inactive Publication Date: 2013-11-13
SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be pointed out that since the flue gas volume of the converter is usually 100,000 cubic meters per hour, this energy waste is very alarming

Method used

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  • Physical-sensible-heat recovery method and device of converter flue gas

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Embodiment 1

[0023] Example 1, such as figure 1 shown.

[0024] exist figure 1 Among them, 1 is the converter. 2 is the flue heat exchange device of the converter. 3 is an evaporative cooler. 4 is a coarse dust removal device. 5 is a waste heat boiler. 6 is a water mist generator arranged before the dust collector, so as to regulate the temperature and / or humidity of the flue gas entering the fine dust collector when necessary. 7 is a fine dust removal device, specifically, it is a bag filter, of course, it is not ruled out that it is an electric dust collector. 8 is induced draft fan. 9 is a switching station.

[0025] The working process of this embodiment is that after the high-temperature flue gas discharged from the converter 1 passes through the flue heat exchange device 2 of the converter, the temperature drops to 850-950°C, and then passes through the evaporative cooler 3 to further reduce the temperature to 550±30°C, after being dedusted by the coarse dedusting device 4, ...

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PUM

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Abstract

The invention discloses a physical-sensible-heat recovery method and device of a converter flue gas, belongs to the technical fields of recovery and utilization of physical sensible heat in the converter flue gas, and mainly solves the problems comprising: intercepting some of the physical sensible heat from a high-temperature flue gas discharged by a converter flue cooling and heat-exchanging device, to make effective use; reducing water waste; and intercepting some of the physical sensible heat from high-temperature steam produced by an evaporative cooling process, to make effective use. The physical-sensible-heat recovery method of the converter flue gas is characterized in that: in an evaporative cooler, the temperature of the high-temperature flue gas is reduced to 350-700 DEG C, a waste-heat boiler is adopted for heat exchange, and the temperature of the high-temperature flue gas is further reduced to 120-250 DEG C. The physical-sensible-heat recovery device of the converter flue gas comprises a flue heat exchanger, the evaporative cooler, a coarse dust removal device, the waste heat boiler, a fine dust removal device, a draught fan and a switching station which are arranged in sequence. The invention is applicable to the technical fields of the recovery and utilization of the physical sensible heat in the converter flue gas.

Description

technical field [0001] The invention relates to a method and device for recovering physical sensible heat from converter flue gas, and belongs to the technical field of recovering and utilizing physical sensible heat in converter flue gas. Background technique [0002] Converter flue gas dry recovery system is one of the process links of energy recovery widely used in the current metallurgical industry. Its main process system includes flue cooling heat exchange device, evaporative cooler, coarse and fine dust removal device, induced draft fan, switching station, pipe network setting and control system equipment, etc. In the flue cooling heat exchange device, that is, the flue boiler, the temperature of the converter flue gas is reduced to about 850-950°C, and then the temperature of the converter flue gas is reduced to about 150-250°C through the evaporative cooler, that is, the vaporization cooling tower. Then through the coarse and fine dust removal device, induced draft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46F27D17/00
CPCY02P10/25
Inventor 盛振江黄东生李希昌
Owner SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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