System for melting waste incineration fly ash through waste heat of liquid blast furnace slag
A technology for waste incineration fly ash and treatment system, which is applied in the field of waste incineration fly ash melting and treatment system to achieve the effects of low energy consumption, high-efficiency and harmless liquid blast furnace slag waste heat utilization, and significant energy saving and emission reduction benefits.
Active Publication Date: 2021-03-26
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
However, no one has proposed a waste incineration fly ash melting treatment waste heat recovery system using the waste heat of liquid blast furnace slag, which needs to be developed urgently
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[0018] see Figure 1 to Figure 5 , using the waste heat of liquid blast furnace slag to melt waste incineration fly ash processing system, including fly ash feeder 1, blast furnace 2, melting and mixing device 3, fly ash mixer 5, high-temperature gas mixer 6, slag granulation device 7, Moving bed waste heat recovery device 9, cyclone separator 4, blower one 8, blower two 10; among them, fly ash feeder 1 and blast furnace 2 are connected with melting and mixing device 3, and slag granulation device 7 is connected with melting and mixing device 3. The high-temperature gas mixer 6 is connected with the moving bed waste heat recovery device 9, the high-temperature gas mixer 6 is connected with the melting mixing device 3, the moving bed waste heat recovery device 9, and the cyclone separator 11, and the fly ash mixer 5 is connected with the fly ash The feeder 1 and the cyclone separator 11 are connected.
[0019] The blast furnace 2 discharges high-temperature liquid blast furnac...
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The invention discloses a system for melting waste incineration fly ash through waste heat of liquid blast furnace slag. The system comprises a fly ash feeder, a blast furnace, a melting mixing device, a fly ash mixer, a high-temperature gas mixer, a molten slag granulating device, a moving bed waste heat recovery device and a cyclone separator. The system is characterized in that the high-temperature liquid blast furnace slag discharged by the blast furnace and the fly ash discharged by the fly ash feeder are mixed and melted in a melting mixing device; additional heat is provided to the melting mixing device by a heater, so that a molten mixture of the fly ash and the blast furnace slag is in a high-temperature state, and the fluidity of the molten mixture is ensured; then, the molten mixture of the the fly ash and the blast furnace slag discharged by the melting mixing device enters the slag granulating device to be granulated; meanwhile, high-temperature liquid drops and low-temperature air are subjected to heat exchange in the granulating device, the high-temperature liquid drops are rapidly solidified into fine solid particles, and hot air is obtained; solid particles are discharged from an outlet of the slag granulating device; The system can be widely applied to the fields of environmental protection, ferrous metallurgy and waste heat recovery.
Description
technical field [0001] The invention relates to a waste incineration fly ash fusion processing system, in particular to a waste incineration fly ash fusion processing system using liquid blast furnace slag waste heat. Background technique [0002] Municipal solid waste incineration treatment technology has the advantages of large volume reduction, land saving, and the ability to recover chemical energy in garbage, and has now become the mainstream harmless treatment of municipal solid waste. However, a large amount of fly ash will be produced during the waste incineration process, and the amount of fly ash produced by a waste incineration plant with a daily waste processing capacity of 5,200 tons will reach more than 200 tons. The diameter of fly ash powder produced by waste incineration is generally less than 300 μm, most of which are concentrated in the range of 20-125 μm, and the main components are Ca, Si, Al, K, Na, Cl, Fe, Mg and other elements, and also contain a cert...
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IPC IPC(8): F23G5/08F23G5/44F23G5/46F23J15/02C21B3/06
CPCF23G5/08F23G5/44F23G5/442F23G5/46F23J15/027C21B3/06F23G2202/20Y02W30/91
Inventor 谭煜申宪文晏慧李政季炫宇杨宇田野柏继松
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY