Molten slag rapid cooling, granulation and waste heat recovery power generation system and method

A melting slag and waste heat recovery technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve problems such as air pollution, melting slag is not effectively used, waste of resources, etc., to improve quality, achieve recycling and utilization, and improve efficiency. and quality effects

Active Publication Date: 2014-02-05
NANJING KESEN KENEN ENVIRONMENT & ENERGY
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Problems solved by technology

In the water-quenching slag treatment system, the water-slag ratio is (8-15):1, the heat taken away by the blast furnace slag accounts for about 16% of the total energy consumption of the blast furnace, and only the total slag is recovered after various water quenching processes. 10% of the heat, the rest of the heat is turned into water vapor and put into the atm

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  • Molten slag rapid cooling, granulation and waste heat recovery power generation system and method

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, the molten slag rapid cooling granulation and waste heat recovery power generation system of the present invention includes a slag receiving device, a heat carrier slag rapid cooling granulation device, a slag slow cooling device, a waste heat recovery power generation device and a waste gas purification treatment device.

[0025] The slag receiving device is composed of a slag receiving tank 1 and a slag storage tank 3. The slag receiving tank 1 with external insulation holds the by-product high-temperature molten slag discharged after blast furnace ironmaking, and gathers it to the slag storage which also has external insulation. Tank 3, to overcome the discontinuity of blast furnace slag tapping.

[0026] The heat carrier slag quenching granulation device mainly includes a heat carrier storage tank 23, a h...

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Abstract

The invention provides a molten slag rapid cooling, granulation and waste heat recovery power generation system and method, and belongs to the technical field of ferrous metallurgy molten slag processing and waste energy recovery. The molten slag rapid cooling, granulation and waste heat recovery power generation system comprises a slag receiving device, a heat carrier slag rapid cooling and granulation device, a slag slow-cooling device, a waste heat recovery power generation device and a waste gas purification treatment device. The molten slag is rapidly cooled and granulated by the heat carrier slag rapid cooling and granulation device, and is rapidly cooled to a glass body state; the molten slag is further cooled slowly by heat exchange to facilitate the follow-up sensitive heat recovery. According to the system and the method, the rapid cooling and granulation of molten slag are effectively realized, and the high-temperature waste heat resource is fully recycled on the basis of unaffecting the water activity of the slag.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy slag treatment and residual energy recovery, and in particular relates to a molten slag quenching granulation and waste heat recovery power generation system and a method thereof. Background technique [0002] A large amount of smelting high-temperature slag is produced in the iron and steel smelting production process. According to the statistics of iron and steel enterprises, blast furnace slag accounts for about 50% of the solid waste in the iron and steel industry, and is a silicate material with good performance. After treatment, it can be used as a raw material for cement production. [0003] There are mainly two types of blast furnace slag waste heat recovery processes: wet process and dry process. The wet process refers to the process of cooling high-temperature slag with high-pressure water. It is also generally called the water quenching process. After water quenching,...

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Application Information

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IPC IPC(8): F27D17/00C21B3/08F01D15/10
CPCY02P10/20Y02P10/25
Inventor 刘亚雷宋纪元侯宾才方明陈国宇
Owner NANJING KESEN KENEN ENVIRONMENT & ENERGY
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