Low-carbon operation salt-containing wastewater treatment system and method applying solar energy and loop heat pipe

Abstract

The invention discloses a low-carbon operation salt-containing wastewater treatment system and method applying solar energy and a loop heat pipe, and belongs to the field of salt-containing wastewater low-carbon treatment. The invention mainly solves the problem of high carbon emission caused by compressor power consumption and first operation live steam in the technical field of salt-containing wastewater treatment. The system is composed of a high-temperature condensate water preheating system, a solar heating system, a loop heat pipe condensation system and a waste heat condensation system. Waste heat of condensate water is adopted to preheat salt-containing wastewater, a solar heat absorption film is coupled to exchange heat with the salt-containing wastewater, the temperature of the salt-containing wastewater is further increased, and heat needed by evaporation outside a heat exchange pipe of a condensation section of a subsequent loop heat pipe is reduced; meanwhile, non-condensable gas in the condensation section of the loop heat pipe is ejected by high-pressure nitrogen, the salt-containing waste water is evaporated and absorbs heat in a vacuum environment outside a heat exchange pipe of the condensation section of the loop heat pipe, high-temperature secondary steam is condensed and releases heat, and a compressor does not need to be used. According to the invention, the overall carbon emission of the system is reduced, and the low carbon emission in the salt-containing wastewater treatment process is really realized.

Description

technical field [0001] The invention relates to a low-carbon operation salt-containing wastewater treatment system and method using solar energy and a loop heat pipe, and belongs to the field of low-carbon treatment of salt-containing wastewater. Background technique [0002] As the realization date of my country's "dual carbon" goal is approaching, low-carbon emissions have gradually become the focus of the development of different industries. Although the mechanical vapor recompression technology can recover secondary steam and reduce the consumption of fresh steam, in the actual operation process, the power consumption of the compressor and the first operation of the steam still require electricity. The main power generation method in my country is still thermal power generation, so the carbon emissions of the mechanical vapor recompression system cannot be ignored. It is necessary to design and apply renewable clean energy as a heat source for the evaporation of salty w...

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Problems solved by technology

However, in the process of operation, the system still needs to be equipped with a compressor, and the power consumption of the compressor will increase the carbon emission of the system

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