Steam type spraying-dead steam direct absorption type compound heat pump system

Abstract

The invention discloses a steam type spraying-dead steam direct absorption type compound heat pump system. The steam type spraying-dead steam direct absorption type compound heat pump system comprises an absorber, a generator, a condenser and a spraying device; low-temperature dead steam is directly introduced into the absorber and is absorbed by a working medium in the absorber; a working medium outlet of the absorber is connected with a working medium inlet of the generator by a pipeline; a working medium outlet of the generator is connected with a working medium inlet of the absorber by a pipeline to form a working medium loop; heat net returned water is heated by the absorber and the condenser in sequence and is used as heat net supply water to be output. According to the steam type spraying-dead steam direct absorption type compound heat pump system, the spraying device is introduced, and middle-pressure steam formed by low-pressure steam generated by utilizing a high pressure inlet steam to inject the generator is used as driving steam of a heat pump so that the operation unsafety problem of the system, caused by the fact that the steam pressure is too high is avoided; meanwhile, the efficient utilization of steam energy is realized; the heat pump system is used for directly absorbing the low-temperature dead steam and an evaporator link in a traditional heat pump system is saved; the system investment is reduced; meanwhile, a middle heat exchanging process is reduced so that the system performance is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of heat energy recovery, and relates to a heat pump system, in particular to a steam injection-steam direct absorption composite heat pump system. Background technique [0002] Efficient recovery and utilization of exhaust heat is of great significance to improve energy utilization efficiency and reduce environmental pollution in my country. Absorption heat pumps consume high-grade heat energy and recycle low-grade waste heat to meet user requirements, thereby achieving energy saving and emission reduction. For steam-type absorption heat pumps, the high-temperature heat source, that is, the driving heat source is steam extraction from the steam turbine. When the incoming steam pressure is higher than the required driving pressure, the heat supply coefficient remains basically unchanged; however, in actual operation, if the incoming steam pressure is too high, It will cause scaling, corrosion and other probl...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems and provide a steam injection-steam direct absorption composite heat pump system, which solves the problems of excessive steam pressure, complex heat pump system, and high system investment cost

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