Exhaust steam direct-absorption type lithium bromide heat pump system

Abstract

The invention provides an exhaust steam direct-absorption type lithium bromide heat pump system which comprises an absorber, wherein a low-temperature exhaust steam pipeline is externally connected to the absorber; a liquid outlet of the absorber is communicated with a generator which is internally provided with a condenser through a dilute solution pipeline and then is connected with a liquid inlet through a concentration solution pipeline; a heating pipeline is connected to the generator; the heating pipeline is outputted through the generator and a steam-driving draining pipeline; a heat network pipeline is connected to the absorber, sequentially passes through the absorber and a heat exchange tube in the condenser of the generator and then is outputted; and a liquid outlet of the condenser is communicated with a steam condensation water pipeline for outputting exhaust steam and draining. According to the exhaust steam direct-absorption type lithium bromide heat pump system disclosed by the invention, two links of heat exchange of the exhaust steam and circulating water and heat release of the circulating water in an evaporator in a heat pump are omitted, so that the heat pump system is greatly simplified and the system investment is reduced. Meanwhile, the pulsation of the circulating water is saved and the operation cost is reduced. In addition, two intermediate heat exchange processes are omitted, so that the irreversible loss of the system is reduced and the performances of the system are greatly improved.

Description

technical field [0001] The invention relates to a lithium bromide absorption heat pump system, in particular to a exhaust steam direct absorption lithium bromide heat pump system. Background technique [0002] Low-temperature waste steam is a common waste heat resource in energy, power, metallurgy and petrochemical industries. How to efficiently recover and utilize this waste heat has important practical significance for improving energy utilization efficiency and reducing environmental pollution. The lithium bromide absorption heat pump consumes high-grade heat energy and recycles low-grade waste heat to meet user requirements, thereby achieving energy saving and emission reduction. [0003] The existing lithium bromide absorption heat pump system adopts the scheme of indirect utilization when recovering the waste heat of low-temperature exhaust steam. The heat of exhaust steam is first transferred to circulating water, and then the heat pump uses circulating water as a low...

AI Technical Summary

Problems solved by technology

This solution increases system investment and operating costs, and reduces the quality of low-temperature heat sources, affecting system performance

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