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Pressure type blast furnace red slag waste heat recycling system and method

A waste heat recovery and pressure technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of water volume, heat energy waste, environmental pollution, etc., and achieve the effect of reducing consumption, easy transformation and simple structure

Pending Publication Date: 2019-09-06
XIAN HUAJIANG ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of water volume, heat energy waste and environmental pollution of blast furnace slag flushing, the present invention provides a pressure type blast furnace red slag waste heat recovery system and method, so as to change the traditional slag flushing ditch and pool into a pressure method flushing slag pool, And the water vapor generated by flushing slag is collected to fully recover the waste heat

Method used

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  • Pressure type blast furnace red slag waste heat recycling system and method

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Embodiment 1

[0022] Such as figure 1 As shown, a pressure-type blast furnace red slag waste heat recovery system includes at least a slag flushing unit, a water vapor condensation heat exchange unit, and a slag flushing water heat exchange unit; the bottom of the slag flushing unit is connected to the slag flushing water heat exchange unit through a pipeline valve ; The top of the slag flushing unit is connected with the water vapor condensation heat exchange unit through a pipeline valve.

[0023] The slag flushing unit includes a red slag storage bin 1, a slag flushing pool 2, a slag discharge mechanism 5 and a water vapor outlet pipe 9; the slag flushing pool 2 upper part of the slag flushing unit includes two V-shaped structures, one of which is formed by a V The glyph structure separately forms a water vapor escape chamber 12 and a slag discharge chamber 13. One end of the other V-shaped channel is connected to the red slag storage bin 1, and the other end forms a water vapor escape c...

Embodiment 2

[0035] On the basis of Embodiment 1, a liquid level detection device (not shown in the figure) can be added in the slag washing tank 2, which can be interlocked with the water supply pipe 14 valve to control the valve switch, so as to effectively ensure that the water level of the slag washing tank 2 is sufficient to prevent water vapor from escaping. The slag discharge chamber 12 and the slag discharge chamber 13 prevent the water vapor produced by slag flushing from escaping from the slag discharge chamber 13.

[0036] The invention can fully recover waste heat, ensure no leakage of harmful gas, recover a large amount of water vapor, and reduce water consumption. The structure of the system is simple, and it is convenient to carry out the transformation of the slag flushing treatment system.

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Abstract

The invention discloses a pressure type blast furnace red slag waste heat recycling system and method, and belongs to the technical field of blast furnace red slag treatment. The system is characterized by at least comprising a slag flushing unit, a steam condensation heat exchange unit and a slag flushing water heat exchange unit, wherein the bottom of the slag flushing unit is connected with theslag flushing water heat exchange unit through a pipeline valve, and the top of the slag flushing unit is connected with the steam condensation heat exchange unit through a pipeline valve. A traditional slag flushing ditch and a tank are changed into a pressure method slag flushing tank, steam generated by slag flushing is collected, and waste heat is sufficiently recycled. The system and methodare suitable for iron and steel enterprises with relatively high environment control requirements.

Description

technical field [0001] The invention discloses a pressure type blast furnace red slag waste heat recovery system and method. The invention belongs to the technical field of blast furnace red slag treatment. Background technique [0002] Blast furnace red slag is flushed with water, which is commonly used in the iron and steel industry. Its advantages are small investment, easy operation, and large amount of waste water consumption. But the disadvantage is that the air environment is seriously polluted and a lot of heat is wasted. With the increasingly stringent national energy conservation and environmental protection requirements, the disadvantages of using water to wash slag are becoming more and more obvious. Firstly, a large amount of water vapor produced by slag flushing caused serious pollution around the blast furnace and poor appearance; secondly, it caused a large amount of water loss. It is estimated that about 1.0-1.3 tons of water is needed to process one ton of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/08F27D17/00
CPCC21B3/08F27D17/004Y02P10/25
Inventor 姜乃斌于民蒋召友张秋丹王海峰
Owner XIAN HUAJIANG ENVIRONMENTAL TECH
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