Sintering cooling waste heat micro-positive pressure recovery control system and method
A waste heat recovery and control system technology, applied in the field of sintering, can solve the problems of unfavorable sintering residual heat recovery and reuse, and achieve the effect of increasing steam generation
Pending Publication Date: 2022-01-11
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
The main reason for the large temperature fluctuation is the change of the air volume passing through the material layer of the waste heat recovery hood. If the air permeability is too good, the air volume passing through will be large, which is very unfavorable for the recovery and reuse of sintering residual heat. At the same time, this is also the sintering residual heat. Difficulties to focus on and resolve in the recycling process
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[0027] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0028] figure 1 The structure schematic diagram of the sintering cooling waste heat micro-positive pressure recovery control system provided for the embodiment of the present invention, for the convenience of description, only shows the parts related to the embodiment of the present invention. The system includes:
[0029] The cooling equipment can be a belt cooler or an annular cooler. The cooling equipment is integrated with a cooling fan. The cooling air output by the cooling fan and the circulating flue gas output by the circulating fan enter the waste heat recovery fume hood together, and pass through the waste heat recovery f...
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The invention discloses a sintering cooling waste heat micro-positive pressure recovery control system which comprises an air volume sensor I arranged at an inlet of a waste heat recovery smoke hood, an air volume sensor II arranged at an outlet of the waste heat recovery smoke hood, and a pressure sensor arranged in the waste heat recovery smoke hood, wherein the pressure sensor, the air volume sensor I and the air volume sensor II are in communication connection with a PLC, the PLC is in communication connection with the cooling fan, and the PLC adjusts the opening degree of an air door of the cooling fan or the frequency of the cooling fan based on a smoke amount I, a smoke amount II and / or the air pressure value in the waste heat recovery smoke hood, so that the waste heat recovery smoke hood is in a micro-positive pressure state. Therefore, it is ensured that the heated high-temperature flue gas is completely recycled to a waste heat boiler, and the steam generation amount of the boiler is increased.
Description
technical field [0001] The invention belongs to the technical field of sintering, and more specifically, the invention relates to a micro-positive pressure recovery control system and method for sintering cooling waste heat. Background technique [0002] Waste heat resources belong to secondary energy, which is the product of primary energy or combustible material conversion, or the heat left after the completion of a certain process of the heat emitted during the combustion of fuel. [0003] The flue gas waste heat recovery device of the sintering cooling system mainly recovers the sensible heat temperature of the sintering ore, and the change value of the exhaust gas temperature of the cooler is 300 ℃ ~ 450 ℃, which accounts for a large proportion of the total heat. In the sintering process, due to the different combustion conditions of the sintered ore on the sintering machine, the temperature of the sintering exhaust gas and the exhaust gas released during cooling must b...
Claims
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IPC IPC(8): F27D17/00F27D15/02F27D19/00
CPCF27D17/004F27D15/02F27D19/00F27D2017/006F27D2019/0056Y02P10/25
Inventor 徐冰张群山李宁马鹏梁长贺蔡伟贵何奎许永钢
Owner MAANSHAN IRON & STEEL CO LTD