A waste heat recovery device for molten slag
A waste heat recovery device and technology for melting slag, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of reducing the implementation feasibility of the scheme, not giving granulated slag, reducing the heat transfer effect, etc., to achieve convenient matching, The effect of energy saving and emission reduction, and the effect of compact process flow
Active Publication Date: 2018-06-22
BERIS ENG & RES CORP
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Problems solved by technology
There are three problems in the technical solution of this invention: the practical application of compressed air to penetrate the slag liquid layer and granulate the slag is difficult; even if the compressed air can complete the granulation process, the granulated slag is easy to bond with the boiler water pipe, thereby reducing The heat transfer effect affects the operation and production; the plan does not provide technical measures for how to discharge the granulated slag from the circulating fluidized bed boiler, thus greatly reducing the feasibility of the plan implementation
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[0019] In order to better understand the purpose, structure and function of the present invention, a kind of molten slag waste heat recovery device of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0020] like Figure 1 to Figure 4 As shown, it is shown as a molten slag waste heat recovery device of the present invention, which is used to recover and reuse the molten slag waste heat, including a slag forming device, a loading and moving device 5 and a heat exchange device 12, wherein the slag forming device includes A plurality of connected ingot molds 4, the ingot molds are used to cast the slag into thin bulk slag material, which is beneficial for heat exchange in the heat exchange device. The slag flows out through the slag tank 1 and enters the slag collecting tank 2 for temporary storage and buffering. The outlet of the slag collecting tank 2 is connected to the slag flow tank 3. The ingot mold 4 is set at ...
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The invention discloses a waste heat recovery device for molten slag, comprising: a loading and moving device (5) capable of driving high-temperature slag to move, a heat exchange device (12) is arranged on the loading and moving device (5), and a loading and moving device ( 5) The high-temperature slag is transferred to the heat exchange device (12), and the heat exchange medium in the heat exchange device (12) exchanges heat with the high-temperature slag to cool the high-temperature slag and generate steam and hot air. A melting slag waste heat recovery device of the present invention has a compact process flow and is convenient to match with smelting equipment; the high-temperature slag is only in direct contact with the ingot mold, the system equipment is not easy to be damaged, and the system reliability is high; part of the sensible heat of the slag is recycled and saves energy. Consumption of water resources, steam and hot air are produced at the same time, and the effect of energy saving and emission reduction is remarkable; the slag after cooling can be used as building materials to realize recycling and reuse.
Description
technical field [0001] The invention relates to the technical field of waste heat recovery in the metallurgical industry, in particular to a waste heat recovery device for molten slag. Background technique [0002] Metallurgical enterprises are industries with high energy consumption. During the smelting process, a large amount of molten slag will be produced, and the liquid slag contains high heat energy. Taking ferroalloy electric furnace as an example, every ton of high-carbon ferrochrome produced can produce 1-1.3 tons of slag, the temperature of slag discharge can reach above 1600℃, and the sensible heat of slag per ton can reach above 2000MJ. In 2014, the output of high-carbon ferrochrome in my country was close to 4 million tons, and the amount of ferrochrome slag reached 5 million tons. Taking blast furnace ironmaking as an example, every ton of pig iron produced can produce 300-450kg of blast furnace slag, the slag discharge temperature can reach above 1400℃, and t...
Claims
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IPC IPC(8): C21B3/08F27D17/00
CPCC21B3/08F27D17/004Y02P10/20Y02P10/25
Inventor 王惠永
Owner BERIS ENG & RES CORP