Absorption type heat regenerator and application thereof in regenerative circulation system of power plant

Abstract

The invention discloses an absorption type heat regenerator and application thereof in a regenerative cycling system of a power plant. The key improvement of the absorption type heat regenerator is as follows: the absorption type heat regenerator comprises a generator, an absorber, an expansion mechanism and a working medium pump. The steam inlet of the generator of the absorption type heat regenerator is connected with the steam pumping pipe of a steam turbine through a pipeline, the condensate outlet of the generator of the absorption type heat regenerator is connected with the return condensate pipeline of a boiler through a pipeline, the steam generation outlet of the generator is connected with the steam exhaust pipe of the steam turbine through a pipeline; and the steam absorption inlet of the absorber is connected with the steam pumping pipe of the steam turbine through a pipeline, the cooling water inlet of the absorber is connected with a condensate pipe, and the cooling water outlet of the absorber is also connected with a condensate pipe. The absorption type heat regenerator has the advantages of reducing the number of regenerative cycles for pumping of high-pressure steam, improving the energy conversion efficiency and generation power, saving the energy, and reducing emissions.

Description

technical field [0001] The invention relates to an absorption regenerator and its application in the heat regenerating cycle system of a power plant. Background technique [0002] There are many factors that affect the thermal efficiency of a steam power cycle. The existing technology generally adopts the heat recovery cycle technology, which uses the intermediate extraction steam to heat the condensed water returned to the boiler in the steam power cycle system in the regenerator, and greatly improves the thermal efficiency of the cycle by increasing the temperature of the condensed water returned to the boiler. In order to achieve the highest possible thermal efficiency of the regenerative cycle, according to the specific conditions of the cycle, 3 to 8 stages of regenerators are often used, and the condensed water entering a certain stage of the regenerator is heated by the staged intermediate extraction steam of different pressures. When the saturation temperature is cl...

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Problems solved by technology

[0003] The present invention provides an absorption regenerator and its application in the heat recovery circulation system of a power plant, in order to solve the problem that the current heat recovery circulation system of the power plant uses a steam extraction type heat recovery device to cause a large loss of generator power generation. It can effectively increase the power generation power of the generator, make full use of energy, save energy and reduce emissions

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