Blast furnace slag sensible heat recovery and generating method
A technology for recovering sensible heat and blast furnace slag, which is applied in steam generation methods using heat carriers, furnaces, waste heat treatment, etc., and can solve problems such as low steel slag temperature, rising equipment temperature, and unusable blast furnace slag sensible heat, etc.
Active Publication Date: 2012-07-25
刘犇
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Problems solved by technology
The disadvantage of this method is that not only the sensible heat of the blast furnace slag cannot be utilized, but also a large waste of water resources is caused.
The disadvantage of this technology is that when the drum cools the liquid slag, the drum and the steel ball are under the action of high temperature, the temperature of the equipment rises, and deformation is easy to occur, which affects the condensation of the liquid slag. Secondly, the temperature of the cooled steel slag is low, and the available heat is reduced.
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[0037] See Figure 4 , a method for recovering sensible heat from blast furnace slag and generating electricity according to the present invention, the specific implementation of which is as follows:
[0038] The high-temperature liquid slag flowing through the buffer pre-cooling slag liquid pool is cooled by circulating air, and the heated circulating air goes to heat the waste heat boiler in the buffer pre-cooling slag liquid pool to generate steam to generate electricity, and the cooled circulating air returns to the The inlet of the circulating fan. The high-temperature slag melt is cooled by air to reduce the temperature to the temperature close to the crystallization temperature, and is discharged from the buffered pre-cooled slag liquid pool, and flows through the crystallization bag onto the continuously moving pallet crawler, and continues to be air-cooled and moderately sprayed with water to form high-temperature crystals , (its surface temperature is controlled abo...
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The invention relates to a blast furnace slag sensible heat recovery and generating method. Circulating air is used for cooling high temperature liquid slag running through the interior of a buffer precooling slag liquid pool, the heated circulating air is used for heating the waste heat boiler of the buffer precooling slag liquid pool to generate steam for generating, the cooled circulating air returns to the inlet of a circulating fan, the temperature of the high temperature molten slag is lowered close to crystallization temperature through air cooling, and then the high temperature molten slag is discharged out of the buffer precooling slag liquid pool and flows and falls onto a tray track machine in continuous motion through a crystallization bag for further air cooling and moderate spray cooling so as to form high temperature crystalline; the high temperature crystalline is fed to a solid waste boiler for further cooling and then is discharged the solid waste boiler when being cooled to the temperature of 200 DEG C, then the high temperature crystalline is cooled further, crushed and sieved so as to achieve the technical purpose of cooling the blast furnace slag, and the steam generated by two combined waste boilers namely the waste boiler of the buffer precooling slag pool and the solid waste heat boiler can be used for jointly driving a generator set for generating.
Description
technical field [0001] The invention relates to a method for recovering sensible heat of blast furnace slag and generating electricity, in particular to a high-temperature slag sensible heat recovery system and production process for recovering and utilizing heat energy of high-temperature liquid slag in metal smelting, and belongs to the technical field of waste heat energy recovery. Background technique [0002] Steel production is an important basic structural material and functional material in national economic construction. When the world enters a new historical era of economic globalization and informatization, steel still needs to be supported. With the rapid growth of steel production, resources, energy and pollutant emissions have become restrictive factors restricting the further development of my country's steel industry. Therefore, in the process of my country's iron and steel industry taking a new industrialization road, efforts should be made to reduce energy...
Claims
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IPC IPC(8): C21B3/08F22B1/04F27D17/00
CPCC21B2400/026C21B2400/06C21B2400/072C21B2400/08Y02P10/20Y02P10/25
Inventor 刘犇
Owner 刘犇