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Combined heat and power generation energy saving device using afterheat to supply heat and energy saving method

A technology of combined heat and power generation and energy-saving devices, applied in the energy field, can solve problems such as waste of water resources, and achieve the effects of increasing power generation, increasing power generation, and improving efficiency

Inactive Publication Date: 2011-02-09
联合优发生物质能源徐州有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its water consumption can reach more than 60% of the water consumption of the whole plant, resulting in a great waste of water resources

Method used

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  • Combined heat and power generation energy saving device using afterheat to supply heat and energy saving method
  • Combined heat and power generation energy saving device using afterheat to supply heat and energy saving method
  • Combined heat and power generation energy saving device using afterheat to supply heat and energy saving method

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the typical features of the prior art are: the primary heating network heater is a surface heating network heater 10, which uses the steam extracted by the steam extraction and condensing steam turbine 5 to send to the heating pipe network (also called the hot water pipe network) The incoming return water is heated.

[0030] The heating pipe network has two levels: the primary heating network 11 and the secondary heating network 12 . The primary heating network 11 is connected to the surface heating network heater 10 through pipelines, and the secondary heating network 12 is used to supply heat to the outside.

[0031] Such as figure 2As shown, the cogeneration energy-saving device utilizing waste heat for heating according to the present invention includes a steam boiler, a steam extraction condensing turbine 5, a ...

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Abstract

The invention relates to a combined heat and power generation energy saving device using afterheat to supply heat and an energy saving method. The combined heat and power generation energy saving device comprises a steam boiler, a steam extraction condensed type steam turbine, an electric generator, a condenser, a deaerator and a cooling tower, wherein the steam extraction condensed type steam turbine is connected with the condenser by an exhaust steam cylinder, and the condenser is connected with the cooling tower to form large waterway circulation; the combined heat and power generation energy saving device also comprises a backpressure turbine, a compression heat pump and a heat exchanger, wherein a steam inlet of the backpressure turbine is connected with a steam extraction hole of the steam extraction condensed type steam turbine, an exhaust steam hole is connected with a steam inlet of the heat exchanger, the compression heat pump is drawn by the backpressure turbine and is connected with the backwater end of a hot-water pipe network, the condenser and the compression heat pump are connected with the cooling tower to form small waterway circulation, the water inlet end of the heat exchanger is connected with the water outlet end of the compression heat pump, the water outlet end is connected with the water inlet end of the hot-water pipe network, and the drainage end is connected with the deaerator. The invention is capable of reducing cold source loss, increasing comprehensive heat efficiency and electrothermal proportion and reducing unit electric-generation coal consumption.

Description

technical field [0001] The invention belongs to the field of energy technology, and relates to a device and an energy-saving method for using cogeneration waste heat to supply heat and reducing the coal consumption of generating units for power generation. Background technique [0002] According to the "World Energy Herald" report, my country's energy situation is grim. China's population accounts for 20% of the world's population, and its per capita energy resources are less than half of the world's average level. China is a country whose energy structure is dominated by coal. Since the 1950s, it has developed a centralized heating method based on combined heat and power generation and supplemented by boiler rooms to supply urban industrial and civil heating. By this century, central heating has become an important infrastructure in cities, and it has played an important role in improving energy utilization, improving urban atmospheric environment quality, promoting produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D19/10F01D15/08F01K11/02F01D17/10F01K19/00F24D3/18F01K17/02
CPCY02B30/16Y02E20/14Y02B30/12Y02B30/00
Inventor 刘锋向文国高迎旭田海江夏彦龙
Owner 联合优发生物质能源徐州有限公司
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