Selective absorption-compression composite heat pump circulating device and method based on chemical reaction

Abstract

The invention discloses a selective absorption-compression composite heat pump circulating device and method based on a chemical reaction. The device is mainly composed of an exothermic reactor, a heat absorption reactor, an absorber, a generator, a compressor, a Roots blower, a solution heat exchanger and the like. According to the device, a gas cycle working medium is used for synthetic reactionin the exothermic reactor to heat heating medium water, and a synthetic reactant is used for decomposition reaction in the heat absorption reactor to absorb low-grade heat energy; and mixed gas generated by decomposition is subjected to primary pressure boosting through the Roots blower and then separated through absorption, selective absorption gas is subjected to secondary pressure boosting through thermal compression, and absorbed residual gas leaves from the upper part of the absorber, enters the compressor to increase pressure and enters the reactor to form circulation. According to thedevice and the method, compression is carried out to required working pressure after selective absorption, electric compression and thermal compression are combined for use, the main driving energy islow-grade heat energy driving, and the primary energy utilization rate of the system is improved.

Description

technical field [0001] The invention relates to a heat pump cycle device and a heating method, in particular to a chemical reaction-based selective absorption-compression composite heat pump cycle device and method. Background technique [0002] At present, heat pump technology is usually used for waste heat or waste heat recovery. Traditional heat pump technology mostly uses the physical phase change of refrigerant to achieve energy improvement. On the one hand, limited by the thermodynamic properties of the refrigerant, the heating capacity per unit mass of the refrigerant and the coefficient of performance of the system are not high; Global warming is gradually being banned. Therefore, the reversible chemical reaction of ammonium carbamate is considered to realize energy conversion, and the system circulating refrigerant ammonia and carbon dioxide are environmentally friendly refrigerants. [0003] Ammonium carbamate is an intermediate product in the production process ...

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Problems solved by technology

[0005] Purpose of the invention: The purpose of the invention is to provide a chemical reaction-based selective absorption-compression composite heat pump cycle device and method to solve the problems of small thermal effect of refrigerant physical phase transition, low coefficient of performance of the system, and difficulty in boosting the pressure of the mixed gas working medium

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