Boiler fly ash partitioned circulating combustion system

Abstract

The invention relates to the technical field of boiler combustion, in particular to a boiler fly ash partitioned circulating combustion system which comprises an overline. The right end of the bottomof the overline communicates with a fly ash circulating ash conveying line, the bottom of the fly ash circulating ash conveying line communicates with a bin pump ash conveying line, the bottom of thebin pump ash conveying line communicates with a bin pump, and one end, far away from the fly ash circulating ash conveying line, of the overline communicates with a distribution pipe. Through the arrangement of the overline, the fly ash circulating ash conveying line, the bin pump ash conveying line, the bin pump, a secondary air branch pipe, a secondary air pipe, a boiler body, an ejector and thedistribution pipe, the problems that as the service life of an existing boiler is prolonged, heat efficiency of a circulating fluidized bed boiler, a pulverized coal furnace or other furnace types isreduced due to separators or other reasons, the energy consumption is increased, and meanwhile, the environmental protection effect is reduced, the residual carbon amount and the power of fuel or heat exchange circulation are increased, and the oxygen content and the NOx initial concentration in the system are increased are solved.

Description

technical field [0001] The invention relates to the technical field of boiler combustion, in particular to a boiler fly ash section circulating combustion system. Background technique [0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The original meaning of the pot refers to the water container heated on the fire. Furnace refers to the place where fuel is burned. The boiler includes two parts: the boiler and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or regenerated. The generator converts mechanical energy into electrical energy, and the boiler that provides hot water is called a hot...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a boiler fly ash section circulating combustion system, which has the advantages of high boiler thermal efficiency, reduced carbon residue, power of heat exchange cycle and improved environmental protection effect, and solves the problem that existing boilers are used with equipment. As the service life increases, the thermal efficiency of circulating fluidized bed boilers, pulverized coal furnaces or other furnace types decreases due to separators or other reasons, and energy consumption increases. At the same time, environmental protection effects are reduced and carbon residues and fuel or heat exchange cycles are increased. Power, and improve the oxygen content in the system and the initial concentration of NOx

Images