A regenerative flue gas recovery device

A waste heat recovery device and a flue gas recovery technology, applied in the field of flue gas recovery, can solve the problems of difficulty in ensuring high temperature flue gas, high flue gas heat, unfavorable promotion, etc. The effect of promotion

CN109724425BActive Publication Date: 2020-04-03四会市国耀铝业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-04-03

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Abstract

The invention discloses a heat storage smoke recovery device, and relates to the technical field of smoke recovery. The heat storage smoke recovery device comprises a four-way valve; four branch pipesof the four-way valve communicate with smoke discharge pipes of two furnace bodies, a high-heat smoke pipe and a low-heat smoke pipe; the high-heat smoke pipe communicates with a first afterheat recovery device; the low-heat smoke pipe communicates with a second afterheat recovery device; the second afterheat recovery device sleeves a three-way pipe; the second afterheat recovery device communicates with the first afterheat recovery device through a smoke reflux pipe; and when a valve blade is positioned in a position A, the smoke discharge pipe on one side communicates with the high-heat smoke pipe, and the smoke discharge pipe on the other side communicates with the low-heat smoke pipe. The heat storage smoke recovery device is simple in structure and low in transformation cost of traditional equipment, facilitates popularization, and can continuously use high-temperature smoke to achieve high afterheat recycling rate; and air in the three-way pipe is continuously heated by low-temperature smoke generated during tapping of a furnace body, so that the afterheat recovery efficiency is further improved.
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Description

technical field

[0001] The invention relates to the technical field of flue gas recovery, in particular to a heat storage type flue gas recovery device. Background technique

[0002] Due to the periodic influence of electric furnace smelting, it is difficult to recover and utilize the intermittent flue gas waste heat generated by electric furnaces. Usually, the "water cooling + air cooling" method is used to cool to 200°C and then discharged through dust removal. A large amount of flue gas waste heat is dissipated through cooling water and air. In the atmosphere, a large amount of waste heat from electric furnace flue gas is wasted; at the same time, cooling also requires additional power and water resource consumption.

[0003] At present, a small number of electric furnaces recover part of the waste heat of electric furnace flue gas through scrap steel preheating method or heat pipe waste heat boiler. Among them, the electric furnace scrap steel preheating technology is af...

Examples

Embodiment Construction

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] Such as figure 1 and 2As shown, a regenerative flue gas recovery device includes a four-way valve 3, a blower 11 and a three-way pipe 9 connected to the blower 11, and the three-way pipe 9 is respectively connected to the air inlet ends of the two furnace bodies 1 , the four-way valve 3 includes a driver 301 and a valve leaf 302, the driver 301 drives the valve leaf 302 so that the valve leaf 302 has a position A and a position B, and the four branch pipes of the four-way valve 3 are respectively conne...