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Combined heat and power generation system and method for secondary heating industrial heat supply network

A technology of secondary heating and cogeneration, applied in cogeneration systems, heating methods, heating systems, etc., can solve the problem of large temperature difference between the heat exchange end and the industrial heating network, improve energy utilization efficiency, reduce Heating end difference, the effect of reducing the loss of available energy

Pending Publication Date: 2022-07-15
HUADIAN ELECTRIC POWER SCI INST CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of large temperature difference between the heat exchange end of the cogeneration system and the industrial heating network in the prior art, the present invention provides a cogeneration system and method for reheating the industrial heating network

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  • Combined heat and power generation system and method for secondary heating industrial heat supply network

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have ...

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Abstract

The invention relates to a combined heat and power generation system and method for a secondary heating industrial heat supply network, the combined heat and power generation system comprises a steam turbine, a heater, a deaerator, a heat pump and a steam injection device, the steam injection device is used for mixing steam at two temperatures, the mixed steam is used for primary heating of return steam of the heat supply network, the heating end difference is reduced, and the heating efficiency is improved. The available energy loss caused by heat exchange is reduced; meanwhile, medium-quality heat is converted into high-quality heat through the heat pump, the high-quality heat is used for secondary heating of heat supply network return steam, consumption of the high-quality steam of the steam turbine is reduced, and the energy utilization efficiency is improved; the steam heat utilization rate of the steam turbine is greatly improved through secondary heating, and available energy loss caused by the temperature difference is reduced.

Description

technical field [0001] The invention relates to the technical field of cogeneration, in particular to a cogeneration system and method for secondary heating of an industrial heat network. Background technique [0002] In recent years, my country's industrial heat supply has continued to grow. China is a big coal-burning country. For a long time in the future, clean coal-fired district heating will still be the most effective way to balance environmental protection and cost pressure and achieve low-carbon heating. When the traditional thermal power plant heats the industrial heating network, the extraction steam directly heats the industrial heating network. The temperature of the industrial heating network is relatively low, and the temperature of the heat exchange end of the cogeneration system is much higher than the temperature of the industrial heating network. The loss is relatively large. At the same time, when high-quality steam is required, it is often necessary to e...

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Application Information

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IPC IPC(8): F24D3/18F24D18/00F24D19/10F25B15/06F25B30/04F01K7/38F01K7/44F24D101/10
CPCF24D3/18F24D19/1039F25B15/06F25B30/04F01K7/38F01K7/44F24D2200/126F24D2200/32Y02E20/14
Inventor 高新勇严俊杰鞠浩然郑立军何晓红刘明
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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