A water cogeneration system supporting fuel cell wastewater recycling and seawater desalination

Abstract

The invention relates to a hydrothermal cogeneration system supporting fuel cell waste water recovery and seawater desalination, including a fuel cell group, an improved Multi-Stage Flash (Multi-Stage Flash "MSF") device, a hot water storage tank, and a heat exchanger , the fuel cell stack is provided with a matching liquid cooling device, the fuel cell stack is connected to the MSF device through a heat exchanger, and the MSF device can desalinize seawater, discharge waste gas, high Concentration salt water and fresh water, part of the exhaust gas produced by the fuel cell stack is used as the input of the MSF device, and part of it is cooled by the supporting liquid cooling device, and the fresh water generated by the MSF device is used as the liquid cooling device. The cooling liquid, the hot water passing through the liquid cooling device goes through a heat exchanger into the hot water storage tank. The invention has simple structure and strong practicability, and can effectively solve the problems of water consumption, electricity consumption, heating and the like for coastal residents.

Description

technical field [0001] The invention relates to the field of environmental protection and energy saving, in particular to an integrated system of water heat and power cogeneration equipment combined with fuel cell wastewater recovery and seawater distillation and desalination devices. Background technique [0002] Combined Heat and Power (CHP) systems based on fuel cells only need to emit a small amount of pollutants while providing electricity and heat, so they have received extensive attention in the field of solving the global energy crisis. At the same time, it is estimated that under extreme cold weather conditions, more than 50% of the electricity consumption in households and industrial buildings is used for heating, so providing heat for heating while generating electricity is an excellent way to reduce electricity consumption. However, usually some of the heat generated during CHP use is used in cooling systems for heat sources such as absorption chillers. Therefor...

AI Technical Summary

Problems solved by technology

Although these two patents can effectively recycle wastewater, the systems proposed in patents US8367256B2 and US20100047634 cannot utilize the waste heat carried in the exhaust gas, and the energy utilization efficiency is low

At the same time the proposed design is also highly customized and thus very complex in structure

Finally, the systems proposed above are also only aimed at recycling water from fuel cells, but there is no existing technology that combines recycling technology with methods of distilling seawater

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