Fuel and gas-fired boiler oxygen-enriched combustion smoke nearly-zero-emission power generation system

Abstract

The invention provides a fuel and gas-fired boiler oxygen-enriched combustion smoke nearly-zero-emission power generation system. The fuel and gas-fired boiler oxygen-enriched combustion smoke nearly-zero-emission power generation system is composed of a boiler, an air bellow, an air separation device, a burner, a multi-stage heat exchanger, a recirculating fan, an induced draft fan, a dehydration device, an SO2 separation device, a CO2 capturing device, a N2 separator, a NOx reaction device and the like. The concentration of oxygen of secondary air is changed so as to ensure that fuel and gas catch fire in time, burn stably and burn out, the boiler efficiency is improved, and adaptability of the boiler to loads is enhanced. By recycling water steam, SO2, NOx, CO2 and the like brought by burning smoke of fuel and gas, integrated desorption of harmful gas and trace elements in smoke is achieved; meanwhile, the temperature of exhausted smoke is reduced to approach the atmosphere temperature, nearly-zero emission of burning smoke is achieved, the environment is protected, and maximum utilization of resources is also achieved.

Description

technical field [0001] The invention relates to a fuel oil and gas boiler technology for a power station, in particular to a fuel oil and gas boiler oxygen-enriched combustion near-zero-emission power generation technology. Background technique [0002] With the development of human industry, the environment and climate change issues have become the concerns of the whole world. The flue gas produced by the combustion of oil and gas in the power station industry brings a large amount of sulfide, nitrogen oxides and a large amount of carbon dioxide. The combustion products produced by the combustion of oil and gas have a huge adverse impact on the environment and climate. However, the power station industry, which uses oil and gas as raw materials, occupies an important position in the use of oil and gas, and has also become a relatively concentrated source of carbon dioxide and other pollutant emissions, with a huge amount of emissions. Therefore, the control and treatment o...

AI Technical Summary

Problems solved by technology

However, these measures for the emission of oil and gas combustion products are not well combined. They are all independently considered to remove them, and chemical raw materials such as sulfides and nitrogen oxides are not recycled, which increases operating costs. , causing a waste of resources

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