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Modeling method and application of heat transfer and heat storage simulation model of hot blast stove

A technology of simulation model and modeling method, applied in the modeling field of heat transfer simulation model, which can solve the problems of low output of blast furnace, high energy consumption, lack of research on heat transfer and heat storage mechanism of hot blast furnace, etc.

Active Publication Date: 2012-12-12
WISDRI ENG & RES INC LTD
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Problems solved by technology

[0004] At present, due to the lack of research on the heat transfer and heat storage mechanism of the hot blast stove, it will lead to problems such as high energy consumption and low blast furnace output in the production process

Method used

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  • Modeling method and application of heat transfer and heat storage simulation model of hot blast stove
  • Modeling method and application of heat transfer and heat storage simulation model of hot blast stove
  • Modeling method and application of heat transfer and heat storage simulation model of hot blast stove

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Embodiment Construction

[0099] The present invention will be further described below in conjunction with the accompanying drawings.

[0100] Since the regenerator in the regenerator of the hot blast stove is composed of many parallel arrangements of radial through holes, a schematic diagram is drawn according to the actual structure, as shown in figure 1 shown. Due to the complexity of the actual structure, only four control bodies are drawn here to represent its simplified structure. Since the regenerator is composed of many identical grid holes 1 arranged in parallel, it can be assumed that the flow velocity and temperature distribution of the gas flowing into each small hole are the same when performing numerical simulation calculations, then their flow and heat transfer process can be considered to be completely consistent.

[0101] This paper takes a grid hole and the heat storage body controlled by it as an example to carry out the calculation. The schematic diagram of its structure is as fol...

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Abstract

The invention discloses a modeling method and application of a heat transfer and heat storage simulation model of a hot blast stove. The method comprises the following steps of: calculating theoretical combustion waste gas temperature, waste gas flow and waste gas composition of the hot air stove according to parameters such as gas composition, gas flow, gas inlet temperature, combustion-supporting air inlet temperature and air / fuel ratio to provide basis for parameter calculation of the heat transfer and heat storage model; performing meshing on a cellular temperature field; establishing a numerical solving equation for heat conduction in a heat storage body and a heat exchange condition with gas; and performing numerical solving on the variation in time and space along with temperature so as to obtain a heat transfer and heat storage simulation model of the hot air stove. By using the heat transfer and heat storage simulation model of the hot air stove established by the invention, the added value and the consumed time of heat storage quantity when the combustion final point is reached under different combustion strategies can be calculated under the same initial condition, and the optimal combustion strategy, i.e., the combustion strategy with the highest efficiency, is obtained through comparison, so that the energy accumulated in a heat storage period is improved to the greatest extent, and the aim of improving the air temperature is fulfilled.

Description

technical field [0001] The present invention relates to a modeling method for a heat transfer simulation model, in particular to a modeling method for a heat transfer and heat storage simulation model of an ironmaking blast furnace hot blast stove in the metallurgical industry and similar industrial furnaces, and the present invention also relates to the heat transfer of the hot blast stove Application of heat storage simulation model. Background technique [0002] The hot blast stove is an important supporting equipment in the blast furnace ironmaking production process. Its main function is to heat the blast to the required temperature and provide high-temperature hot air to the blast furnace. The blast furnace is generally supplied with air alternately by 3-4 hot blast stoves, and the working process of each hot blast stove is a repeated process of combustion and air supply. After the gas and combustion-supporting air are mixed in the burner, they are burned in the combu...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周磊强健蔡晓峰陈惠敏
Owner WISDRI ENG & RES INC LTD
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