Research and Countermeasures on coking and high temperature corrosion of boiler side wall water wall in power plant with opposed burner arrangement

Abstract

In recent years, due to environmental protection policies, market supply and demand and other reasons, coal shortage and rising coal prices have led to high operating costs of thermal power plants. Therefore, many power plants adopt measures such as burning inferior coal and mixing coal slime to reduce costs, but there also emerge situations of serious coking of boiler water wall and large-area high-temperature corrosion of water wall. In this paper, based on the opposed arrangement of boiler burners in a power plant in Shanxi, aiming at the problems of water wall coking and high-temperature corrosion caused by burning inferior coal and slime, through the transformation of burners in low flue gas temperature area, the problems of water wall coking and high-temperature corrosion are solved, the expected results are achieved, and remarkable economic and social benefits are obtained for the enterprise