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Blast furnace slag waste heat recovery device

A waste heat recovery device, blast furnace slag technology, applied in recycling technology, furnace, waste heat treatment, etc., can solve the problems of unutilized heat, reduce blast furnace slag, etc., and achieve the effect of high utilization rate

Active Publication Date: 2014-03-26
PANZHIHUA GANGCHENG GROUP RUITONG REFRIGERATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment of blast furnace slag is generally water quenching method. The temperature of blast furnace slag is lowered by pumping water, and then sent to cement factory or building material factory for use as building materials after cooling. The heat is not used.

Method used

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  • Blast furnace slag waste heat recovery device
  • Blast furnace slag waste heat recovery device
  • Blast furnace slag waste heat recovery device

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as Figure 1 to Figure 4 As shown, the blast furnace slag waste heat recovery device of the present invention includes a vibrating fluidized bed 6, and the vibrating fluidized bed 6 includes an air inlet 27, an air outlet 22, a feed inlet 21 and a discharge outlet 13, and the vibrating fluidized bed 6 A fluidized bed fan 7 is provided at the air inlet 27 of the boiler, and a waste heat boiler 9 and a superheater 8 are also provided. The waste heat boiler is provided with a boiler water inlet 15, a boiler flue gas inlet 23, a boiler tail gas outlet 24, and a boiler steam outlet 28. Steam inlet 10, superheated steam outlet 11, superheater tail gas outlet 25 and superheater flue gas inlet 29 are arranged on the device. The boiler flue gas inlet 23 of the waste heat boiler is connected with the air outlet 22 of the vibrating fluidized b...

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Abstract

The invention discloses a blast furnace slag waste heat recovery device, which can recycle the blast furnace slag waste heat. The device comprises a vibrated fluidized bed, wherein a fluidized bed fan is arranged at an air inlet of the vibrated fluidized bed; the device further comprises a waste heat boiler and a superheater, wherein the boiler smoke intake of the waste heat boiler is connected with an air outlet of the vibrated fluidized bed, and the boiler steam outlet of the waste heat boiler is connected with a steam inlet of the superheater; a liquid slag treatment device for conveying hot smoke to a smoke inlet of the superheater is arranged under the smoke inlet of the superheater, the liquid slag treatment device comprises a liquid slag blower and an air bellow which is used for conveying the air flow generated by the liquid slag blower, the air bellow is internally provided with a granulating motor, the granulating motor is connected with a liquid slag granulating rotary table, the corresponding air bellow under the liquid slag granulating rotary table is provided with a plurality of blowing holes, and the liquid slag treatment device further comprises a feed mechanism for conveying the liquid slag to the liquid slag granulating rotary table, and a slag discharge port facing towards a feed port of the vibrated fluidized bed.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a blast furnace slag waste heat recovery device. Background technique [0002] Blast furnace slag is one of the main products produced in the iron and steel production process, and it is also a very valuable secondary resource. At present, the treatment of blast furnace slag is generally water quenching method. The temperature of blast furnace slag is lowered by pumping water. After cooling, it is sent to cement factory or building material factory for use as building materials, and the heat is not used. The temperature of blast furnace slag is generally about 1450°C, the available heat per ton of blast furnace slag is about 30kg of standard coal, and 300 to 500kg of blast furnace slag can be produced per ton of pig iron smelted. Recycling one ton of blast furnace slag waste heat can roughly generate 100 kilowatt-hours of electricity. Contents of the invention [0003] The tech...

Claims

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Application Information

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IPC IPC(8): C21B3/08C21B3/06F27D17/00
CPCY02P10/25Y02W30/50
Inventor 周道选
Owner PANZHIHUA GANGCHENG GROUP RUITONG REFRIGERATION EQUIP
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