Ammonia recovery and fuel cell power generation system and method applied to sewage treatment plant

Abstract

The invention discloses ammonia recovery and fuel cell power generation system and method applied to a sewage treatment plant. The invention belongs to the field of environment-friendly and energy-saving equipment, the system consists of a fuel cell system and an ammonia recovery system, and includes a methane preheater, a first heat exchanger, a stripping column, an absorption column, a second heat exchanger, a flash column, an air preheater, a third heat exchanger, a high-temperature fuel cell, a combustion furnace and a DC / AC conversion unit; by means of the recovered ammonia and fuel cellpower generation system, the ammonia recovery system can always decompose ammonia gas into nitrogen and hydrogen at a high temperature; a fuel source is provided for a fuel cell, low emission of biogas and carbon of a sewage treatment plant can be achieved, climate change is slowed down, sufficient electric power resources are provided for sewage treatment whole-process facilities, comprehensive utilization of energy is realized, and dual benefits of environmental protection and energy conservation are achieved.

Description

technical field [0001] The invention relates to the field of new energy applications of molten carbonate fuel cells, in particular to an ammonia recovery and fuel cell power generation system and method applied to sewage treatment plants, and belongs to the field of environmental protection and energy saving equipment. Background technique [0002] High-temperature fuel cells (molten carbonate fuel cells and solid oxide fuel cells), as a clean and efficient power generation device, have a wide range of fuel sources and can be combined with steam turbine equipment to form a cycle power generation system, which has a good application prospect. [0003] On the other hand, biogas power generation technology is a new technology for comprehensive utilization of energy that integrates environmental protection and energy saving. The biogas converted from sewage treatment plant sludge through anaerobic digestion is used for cogeneration of heat and power through internal combustion en...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a system and method for recycling ammonia and fuel cell power generation applied in sewage treatment plants to solve the problem that the renewable electricity generated by biogas combustion cannot meet the needs of treatment equipment, and further improve the resources and recovery of renewable electricity Overall Ammonia System Performance

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