A kind of thermoelectric decoupling system and operation method

Abstract

The invention discloses a thermoelectric decoupling system and an operating method thereof. The system comprises a boiler, a steam turbine high-pressure cylinder, a steam turbine middle-low-pressure cylinder, a steam condenser, a condensate pump and a heat regenerative system which communicate with one another in sequence, and further comprises a generator, a condenser, an evaporator and an absorber which communicate with one another in sequence to form a circulating loop to form an absorption type heat pump. Flow of main stream which enters the generator is regulated by a main steam ejector high-pressure steam regulating valve which is connected with a main steam ejector inlet, and a main steam ejector by-pass regulating valve; flow of reheated steam which enters the generator is regulated by a reheated steam ejector high-pressure steam regulating valve which is connected with a reheated steam ejector inlet, and a reheated steam ejector by-pass regulating valve; and the regulating target is that a proportion of main steam flow to reheated steam flow, which enters the generator, is equal to a proportion of main stream flow, which enters the steam turbine high-pressure cylinder fromthe boiler, to reheated steam flow which enters the steam turbine middle-low-pressure cylinder. The thermoelectric decoupling system is small in system investment and is high in energy utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of cogeneration of heat and power, in particular to a thermoelectric decoupling system and an operation method. Background technique [0002] Combined heat and power generation is the joint production of heat and electricity by generating units, and using combined heat and power units to supply external heat is an effective means to improve fuel utilization efficiency. However, with the growth of my country's power generation installed capacity, especially the growth of renewable energy power generation installed capacity, the utilization hours and load rate of combined heat and power units are generally low. Limited by the constraints of thermal and electrical loads, when the electrical load rate of cogeneration units is too low, it is difficult for the thermal load to meet user needs. Therefore, it is an urgent problem to be solved in my country's thermal power industry to realize thermoelectric decouplin...

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Problems solved by technology

Limited by the constraints of thermal and electrical loads, when the electrical load rate of cogeneration units is too low, the thermal load is difficult to meet user needs

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