Fluidized heat exchange device after slag of dry type granulating blast furnace
A heat exchange device and blast furnace slag technology, applied in the direction of improving process efficiency, can solve the problems of secondary agglomeration, incomplete heat exchange, low comprehensive heat exchange efficiency, etc., and achieve the effect of wide application range and simple structure
Active Publication Date: 2012-10-10
四川川润股份有限公司
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Problems solved by technology
[0005] One of the purposes of the present invention is to solve the above-mentioned shortcomings, and to provide a fluidized heat exchange device after dry granulation of blast furnace slag, in order to solve the problem of secondary agglomeration of high-temperature slag particles in the heat exchange process in the prior art. Incomplete heating, low comprehensive heat transfer efficiency and other technical problems
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[0021] The present invention will be further elaborated below in conjunction with the accompanying drawings.
[0022] figure 1 shows the overall structure of one form of the invention, see figure 1 As shown, the first embodiment of the present invention is a fluidized heat exchange device after dry granulation of blast furnace slag, including a fluidized bed body 1, a waste heat flue gas collection unit 2, and an air distribution and return unit 3. according to figure 1 As shown, the fluidized bed body 1 , waste heat and flue gas collection unit 2 , and air distribution and return unit 3 are all integrated and covered by the fluidized bed shell.
[0023]The air distribution and return unit 3 is placed at the lower part of the fluidized bed body 1, and the waste heat flue gas collection unit 2 is placed at the upper part of the fluidized bed body 1, and the waste heat flue gas collection unit 2 is used to collect heat exchanged to obtain The waste heat flue gas is exported t...
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The invention discloses a fluidized heat exchange device after slag of dry type granulating blast furnace, and belongs to a waste heat utilization device in the field of metallurgy. The fluidized heat exchange device comprises a fluidized bed body, a waste heat smoke gas collecting unit and an air distribution and material return unit, wherein the air distribution and material return unit is arranged at the lower part of the fluidized bed body; the waste heat smoke gas collecting unit is arranged at the upper part of the fluidized bed body and is used for collecting the waste heat smoke gas obtained through heat exchange and outputting the waste heat smoke gas; and a multilayer overflowing plate for smashing slag particles is also arranged inside the fluidized bed body, a feeding port is formed on one random side of the fluidized bed body, and the feeding port is formed above the multilayer overflowing plate. The fluidized heat exchange device after slag of the dry type granulating blast furnace is simple in structure, is suitable for heat exchange cooling of various blast furnace slag, is particularly suitable to be used as a heat exchanger device in a blast furnace slag continuous dry treatment waste heat continuous utilization system, and is wide in range of application.
Description
technical field [0001] The invention relates to a waste heat utilization device in the field of metallurgy. More specifically, the invention mainly relates to a fluidized heat exchange device after dry granulation of blast furnace slag. Background technique [0002] Blast furnace slag is a by-product of blast furnace ironmaking. It is a silicate material with good performance. After processing, it is mainly used to make building materials and raw materials for chemical fertilizers. At the same time, in the blast furnace production process, after smelting various raw materials and fuels into the furnace, in addition to obtaining molten iron (steelmaking pig iron or foundry pig iron) and by-product blast furnace gas, gangue in iron ore, ash in fuel and flux Fusion forms liquid slag, whose general temperature is 1450-1650°C, and is discharged from the slag port and iron port at regular intervals. Usually, the molten slag discharged from the slag hole is called "upper slag", an...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C21B3/08
CPCC21B2400/026C21B2400/076C21B2400/08Y02P10/20
Inventor刘福兰李辉汪建业肖闯李天丽王麟吴定房蒋鼎琮
Owner四川川润股份有限公司