Device and method for comprehensive recovery and utilization of heat energy in strip processing line
A technology for processing lines and strips, which is applied in the field of thermal energy recovery and utilization of strip processing lines, can solve the problems of loss of flue gas heat, complex equipment structure, and high steam costs
Active Publication Date: 2017-02-01
CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD
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Problems solved by technology
[0003] At present, the exhaust gas temperature of the strip processing line is still ~400°C after passing through the protective gas heat exchanger. Some processing lines are cooled by cold wind and then discharged by high-temperature exhaust fans. This method not only loses a lot of flue gas heat, but also Increased load on the exhaust fan
At the same time, there are many user points in the strip heat treatment line that need auxiliary heat sources to heat air and various fluid media. Some treatment lines mostly use steam as the auxiliary heat source to indirect heating through other medium carriers. This method requires high steam costs and equipment structure. Complicated and inconvenient for maintenance and inspection
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[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the protection scope of the present invention.
[0023] As shown in the figure, a heat energy comprehensive recovery and utilization device for a strip processing line includes a flue gas-air heat exchanger 1 and a flue gas-fluid heat exchanger. The flue gas outlet of the flue gas-air heat exchanger and the flue gas The flue gas inlet of the gas-fluid heat exchanger is connected, the hot air outlet of the flue gas-air heat exchanger and the hot air demand point are provided with a drying fan 3, and the flue gas-fluid heat exchanger is provided with at least There is a circulating heat exchange fluid pipeline for supplying heat sources to the user point, and each circulating heat exchange fluid pipeline is provided with a circu...
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The invention discloses a device and a method for the comprehensive recycling of heat energy in a plate and strip processing line. The device comprises a smoke-air heat exchanger and a smoke-fluid heat exchanger, wherein a smoke outlet of the smoke-air heat exchanger is communicated with a smoke inlet of the smoke-fluid heat exchanger, a drying fan is arranged between a hot air outlet of the smoke-air heat exchanger and a hot air requiring point, at least one circulating heat exchange fluid pipeline for providing user points with a heat source is arranged in the smoke-fluid heat exchanger, and a circulating pump and a fluid tank are arranged on each circulating heat exchange fluid pipeline. A plate and strip annealing furnace supplies a heat treatment unit with heat at multiple points, the multi-point drying heat energy requirement of the heat treatment unit is met, and the direct heating of various fluid media in a washing section is realized.
Description
Technical field [0001] The invention belongs to the field of heat energy recovery and utilization of a strip processing line, and in particular relates to a device and method for comprehensive recovery and utilization of heat energy of a strip processing line. Background technique [0002] my country’s economy is growing rapidly, with great achievements in various constructions, and at the same time paying a huge price for resources and environmental damage. Facing the severe resource and environmental situation, insisting on economical development, clean development, and safe development has become important in economic development. Content, the "Energy Conservation Law of the People's Republic of China" clearly puts forward the basic national policy of adhering to resource conservation and environmental protection, and placing the construction of a resource-saving and environment-friendly society in a prominent position in the development strategy of industrialization and moderni...
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IPC IPC(8): F27D17/00
Inventor 李理陈婉程淑明德军杨柏松
Owner CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD