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Liquid high-temperature slag granulation and waste heat recovery device

A waste heat recovery device and slag granulation technology, which is applied in recycling technology, waste heat treatment, and energy efficiency improvement, can solve the problems of high-quality waste heat resource waste of liquid slag, increase heat recovery efficiency, and increase heating area , avoid the effect of toxic gas

Active Publication Date: 2016-06-01
SUZHOU HAILU HEAVY IND
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is a liquid high-temperature slag granulation and waste heat recovery device to solve the problem of serious waste of high-quality waste heat resources in current liquid slag

Method used

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  • Liquid high-temperature slag granulation and waste heat recovery device
  • Liquid high-temperature slag granulation and waste heat recovery device
  • Liquid high-temperature slag granulation and waste heat recovery device

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Embodiment Construction

[0025] see figure 1 As shown, a liquid high-temperature slag granulation and waste heat recovery device of the present invention includes a slag falling pipe 1 , a granulation bin 6 and a granulation equipment 2 .

[0026] The granulation bin 6 is in the shape of an inverted box with a rectangular, square or circular cross section, and the top of the granulation bin is flat or domed. The top of the granulation bin 6 is provided with an opening for the slag falling pipe 1 to extend into. The inner wall of the granulation bin 6 is used to absorb the heat exchanging surface 3 emitted by the granulation.

[0027] A granulation device 2 is arranged directly below the slag falling pipe 1 .

[0028] The high temperature liquid slag granulation system 2 includes a granulator 201, a granulator connecting part, a granulator driving part, an air supply part and auxiliary devices.

[0029] The granulator 201 is disc-shaped or cup-shaped, and a guide cone is set in the center of the gra...

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Abstract

The invention discloses a liquid high-temperature slag granulation and waste heat recovery device. The device comprises a slag falling pipe, a granulation bin and a granulation device body. The granulation bin is in an inverted box shape, and the lower portion of the granulation bin is open. An opening is formed in the top of the granulation bin and used for allowing the slag falling pipe to stretch in. The inner wall of the granulation bin is a heat exchange surface used for absorbing heat dissipated by liquid high-temperature slag during granulation. The granulation device body is arranged under the slag falling pipe. The high-temperature slag flows into the granulation bin through the slag falling pipe, falls onto the granulation device body, is granulated by the granulation device body rotating at a high speed and meanwhile conducts radiant heat exchange on the heat exchange surface laid on the granulation bin under the action of ring air surrounding the granulation device body, so that granulation and partial energy recovery of the liquid high-temperature slag are realized.

Description

technical field [0001] The invention relates to the technical field of high-temperature liquid slag waste heat recovery, in particular to a liquid high-temperature slag granulation and waste heat recovery device. Background technique [0002] China is currently the world's largest steel producer, and its steel output has remained the world's largest for 17 consecutive years. In 2014, China's pig iron output reached 711 million tons, accounting for about 60% of the world's total output. In the process of smelting pig iron, blast furnace slag containing huge heat will be produced. The temperature of blast furnace slag is generally between 1400 ~ 1550 ℃, and each ton of slag contains (1260 ~ 1880) × 10 3 The sensible heat of kJ is equivalent to 60kg standard coal. Under the current ironmaking technology in my country, 0.3 tons of blast furnace slag is produced for every ton of pig iron produced. Based on the current pig iron production in my country of 711 million tons, it ca...

Claims

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Application Information

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IPC IPC(8): C21B3/06C21B3/08F27D17/00
CPCC21B3/06C21B3/08F27D17/004F27D17/00Y02P10/20Y02P10/25Y02W30/50
Inventor 王树众吴志强陈林于鹏飞孟海鱼张忠清
Owner SUZHOU HAILU HEAVY IND
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