A horizontal carbon tube furnace exhaust gas waste heat recovery system and its application method
A waste heat recovery system and waste heat recovery technology, applied in waste heat treatment, furnaces, furnace components, etc., can solve the problems of heat pollution and waste of combustible gas in production workshops, and achieve effective recycling, saving gas costs, and reducing production costs. Effect
Active Publication Date: 2018-08-31
CENT SOUTH UNIV
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Problems solved by technology
This method not only causes a lot of waste of combustible gas, but also causes thermal pollution in the production workshop
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Embodiment 1
[0031] see figure 1 and figure 2 , 1.05MW gas hot water boiler 1 produces hot water 50m per hour 3 , transported to the hot zone 4 through the circulating water pump 2 with a lift of 32m and the hot return water insulation pipe 3 of DN125. At this time, the temperature of the boiler outlet water at 86°C-92°C drops to 60°C after heat exchange in the hot zone 4 about.
[0032] Before the present invention was adopted, the hot water at about 60°C from the hot zone 4 directly flowed back to the gas-fired hot water boiler 1 for reheating and circulating flow, so that the exhaust gas of the horizontal carbon tube furnace 7 would be burned in vain in the workshop loss, resulting in heat loss and heat pollution in the workshop. After adopting the present invention, if figure 1 Shown, the hot water at about 60°C from the hot zone 4 is sent to the 2×14=28 exhaust gas waste heat heating devices 8 installed on the 14 gas-fired hot water boilers 1 in the workshop through the DN80 hot ...
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The invention discloses a horizontal type carbon tube furnace exhaust gas residual heat recovery system and a using method thereof. At least one exhaust gas residual heat heating device (8) is arranged in the position of each horizontal type carbon tube furnace (7). The heating ends of the exhaust gas residual heat heating devices (8) are connected with the exhaust gas ends of the horizontal type carbon tube furnaces (7). A hot return water heat preservation pipeline (3) provided with a circulating water pump (2) passes through a heat utilization area (4) and then is connected with the heated ends of the multiple exhaust gas residual heat heating devices (8) in series. A first heat meter (5) is arranged in the position, in front of the first exhaust gas residual heat heating device (8), of the hot return water heat preservation pipeline (3). A second heat meter (9) is arranged in the position, behind the last exhaust gas residual heat heating device (8), of the hot return water heat preservation pipeline (3). The two ends of the hot return water heat preservation pipeline (3) are connected with the water inlet end and the water outlet end of a gas-fired hot water boiler (1) correspondingly. By means of the horizontal type carbon tube furnace exhaust gas residual heat recovery system and the using method thereof, heat pollution caused by exhaust gas burning in production workshops can be avoided effectively, and meanwhile the burning heat of combustible gas CO is recycled.
Description
technical field [0001] The invention relates to a waste gas waste heat recovery system, in particular to a waste gas waste heat recovery system based on a horizontal carbon tube furnace in the production process of tantalum and niobium. The invention also relates to a method for using the waste heat recovery system for waste gas of a horizontal carbon tube furnace. Background technique [0002] The waste heat in the industrial production process refers to the sensible heat and latent heat that have not been rationally utilized in the original design in the energy-consuming devices of industrial enterprises that have been put into operation due to the limitations of history, technology, ideas and other factors. It includes waste heat of high-temperature exhaust gas, waste heat of cooling medium, waste heat of waste steam and waste water, waste heat of high-temperature products and slag, waste heat of chemical reaction, waste heat of combustible waste gas and liquid, waste hea...
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IPC IPC(8): F27D17/00F24H1/00
CPCF24H1/00F27D17/004F27D2017/006Y02P10/25Y02P80/15
Inventor 邓胜祥杨敬飚徐慧彭续云毛剑
Owner CENT SOUTH UNIV