Energy saving method for thermoelectric decoupling of heat supply unit of thermal power plant

A technology for thermal power plants and heating units, which is applied to heating fuel, heating methods, household heating, etc., and can solve problems such as unit operation regulation and scheduling

Inactive Publication Date: 2018-12-04
侯晓平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, due to the extensive development and use of new energy sources, the power generation load of coal-fired thermal power plants is gradually decreasing, and the annual utilization hours of the units are also decreasing year by year; The power generation load, that is, the heating load and the power generation load are coupled to each other, and the boiler steam is used for heating after power generation; this brings problems to the operation regulation and scheduling of the unit in the heating season

Method used

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Examples

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Embodiment Construction

[0006] The specific implementation of this energy-saving method: the main steam of the steam turbine and the steam in the hot section of the reheat steam are drawn out, and the jet heat pump is used to compress and absorb the exhaust steam of the steam turbine, and the mixed steam at the outlet of the jet heat pump is used for external heat supply, so that the high pressure of the heating unit can be guaranteed The steam intake of cylinders and medium-pressure cylinders does not affect each other with the steam used for heating, so as to realize thermoelectric decoupling; in addition, a considerable amount of exhaust steam from the steam turbine is used in the heating steam, and the waste heat of the exhaust steam of the steam turbine is realized at the same time.

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Abstract

The invention discloses an energy saving method for thermoelectric decoupling of a heat supply unit of a thermal power plant. In order to realize that the adjustment of generating loads and heating loads of the heat supply unit of the thermal power plant does not affect each other, main steam of a steam turbine and steam of a reheat steam hot section are used, a jet heat pump is used for compressing and absorbing exhaust steam of the steam turbine, combined steam output by the jet heat pump is used for external heating, and in the way, it is ensured that the steam inlet quantity of a high pressure cylinder and a middle pressure cylinder of the heat supply unit and the steam quantity for heat supply do not affect each other so as to achieve thermoelectric decoupling; and in addition, considerable amount of the exhaust steam of the steam turbine is used in heating steam, and meanwhile, the waste heat utilization of the exhaust steam of the steam turbine is realized.

Description

technical field [0001] The invention relates to an energy-saving method for thermoelectric decoupling of a heat-supply unit in a thermal power plant; it is an energy-saving method for realizing the independent adjustment of the power generation load and the heat-supply load of the heat-supply unit of the thermal power plant without affecting each other. Background technique [0002] At present, due to the extensive development and use of new energy sources, the power generation load of coal-fired thermal power plants is gradually decreasing, and the annual utilization hours of the units are also decreasing year by year; The power generation load, that is, the heating load and the power generation load are coupled to each other, and the boiler steam is used for heating after power generation; this brings problems to the operation regulation and scheduling of the unit in the heating season. Contents of the invention [0003] The purpose of the present invention is to provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D1/00F01K17/04
CPCF24D1/00F01K17/04F24D2200/12
Inventor 侯晓平史洪启
Owner 侯晓平
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