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Thermoelectricity co-generation energy-saving device for supplying heat by using waste heat and energy-saving method thereof

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, achieve the effects of increasing power generation, increasing steam volume, and improving efficiency

Inactive Publication Date: 2011-01-12
北京联合优发能源技术有限公司
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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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  • Thermoelectricity co-generation energy-saving device for supplying heat by using waste heat and energy-saving method thereof
  • Thermoelectricity co-generation energy-saving device for supplying heat by using waste heat and energy-saving method thereof
  • Thermoelectricity co-generation energy-saving device for supplying heat by using waste heat and energy-saving method thereof

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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, which uses the steam extracted from the steam turbine to heat the return water sent by the heating pipe network (also called the hot water pipe network).

[0030] The heating pipe network has two levels: primary heating network and secondary heating network. The primary heating network is connected to the surface heating network heater through pipelines, and the secondary heating network 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 turbine 4, a generator, a condenser 5, a deaerator 6 and a cooling tower 7, and the steam turbine 4 is connec...

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Abstract

The invention provides a thermoelectricity co-generation energy-saving device for supplying heat by using waste heat and an energy-saving method thereof. The device comprises a steam boiler, a turbine, an electric generator, a steam condenser, a deaerator and a cooling tower, wherein the turbine is connected with the steam condenser by an exhaust hood, and the steam condenser is connected with the cooling tower to form a big circulation of waterway; the device also comprises a waste heat utilization hot water heater comprising an absorbing type heat pump and a heat exchanger; a steam inlet of the absorbing type heat pump is connected with an extraction opening of the turbine, a water inlet of the absorbing type heat pump is connected with a water returning end of a hot water pipe network, and the steam condenser, absorbing type heat pump and cooling tower are connected to form a small circulation of waterway; a steam inlet of the heat exchanger is connected with the extraction opening of the turbine, a water inlet end of the heat exchanger is connected with a water outlet end of the absorbing type heat pump, and the water outlet end of the heat exchanger is connected with a water inlet end of the hot water pipe network; and the water drainage ends of the heat exchanger and the absorbing type heat pump are joined and then connected to the deaerator. The device of the invention has the advantages of reducing loss of a cold source, improving comprehensive heat efficiency and electric heating ratio and lowering coal consumption of the machine set in power generation.

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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IPC IPC(8): F24D3/18F24D19/10
CPCY02B30/12
Inventor 刘锋向文国高迎旭田海江夏彦龙
Owner 北京联合优发能源技术有限公司
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