Method for smoke gas residual heat utilization and device therefor
A flue gas waste heat and flue gas technology, applied in the field of flue gas waste heat utilization, to achieve the effects of ensuring manufacturing quality, improving installation speed, and being easy to install and use
Active Publication Date: 2009-01-21
HANGZHOU BOILER GRP CO LTD
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[0004] So far, through searching and the understanding of relevant technologies at home and abroad by professionals, there is no emergence of the same and similar technology as the method involved in the present invention and the equipment provided for realizing the method of the present invention
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[0014] As shown in the figure: A, high-temperature flue gas inlet; B, low-temperature flue gas inlet; C, flue gas discharge port; 1, high-temperature heat exchange surface / area / cavity; 2, low-temperature heat exchange surface / area / cavity; 3 1. Heating surface tubes; 4. Heating surface header; 5. Mixed heat exchange surface / zone / cavity.
[0015] The detailed technical content and two embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0016] A method for utilizing flue gas waste heat of the present invention adopts the method that two or more flue gases with different temperatures enter the integrated waste heat boiler or heat exchanger body through separate channels, and the high-temperature flue gas can first pass through the high-temperature heat exchange surface / The zone / chamber is used to heat the medium at a higher temperature for heat exchange. When the temperature drops to the same temperature as the low...
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The invention relates to a method for utilizing the left heat of smoke and relative device, belonging to the heat exchange technique of left-heat boiler or heat exchanger. The invention feeds several smokes in different temperatures into boiler or heat exchanger, wherein the high-temperature smoke is cooled in high-temperature heat exchange face / area / chamber, while the temperature difference between high and low temperature smokes is higher than 50Deg. C when being mixed with low-temperature smoke at the temperature of the low temperature smoke, to recycle the left heat most. The inventive device is formed by a high temperature smoke inlet, a low temperature smoke inlet, a high temperature heat exchange face / area / chamber, a low temperature heat exchange face / area / chamber, mixing heat exchange face / area / chamber and a smoke outlet. The invention can recycle left heat most, with simple structure, flexible size and number, while the heat exchange face uses tubular box type, to confirm quality and improve installment speed, to be widely used in variable left-heat boilers and heat exchangers.
Description
technical field [0001] The invention relates to a method and a device for utilizing flue gas waste heat, and mainly relates to the technical field of heat exchange of waste heat boilers or heat exchangers. Background technique [0002] In reality, steelworks, cement plants, etc. all have technical problems of energy saving and waste heat utilization. Therefore, how to use the exhausted flue gas to recover heat energy most efficiently is a subject of continuous reform by technicians. In the process of iron and steel production, the energy consumption of the sintering process accounts for about 10% of the total energy consumption, ranking second only to the iron-making process. In the total energy consumption of the sintering process, nearly 50% of the heat energy is discharged into the atmosphere in the form of sensible heat of the sintering machine flue gas and cooler exhaust gas. Because the temperature of the exhaust gas of the sinter cooler is not high, usually this part...
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IPC IPC(8): F27D17/00
CPCY02P10/25
Inventor 屠柏锐赵剑云周朝晖
Owner HANGZHOU BOILER GRP CO LTD