Steam boiler capable of achieving partial gasification combustion of coal

Abstract

The invention relates to a steam boiler capable of achieving partial gasification combustion of coal. The steam boiler comprises a chain grate and a boiler body. The boiler body is located over the chain grate, a plurality of air chambers are arranged below the chain grate and sequentially arranged in the conveying direction of the chain grate, and the air chambers are located under a combustion chamber of the boiler body, wherein a steam spray pipe is arranged on the air chamber at the head end, a middle arch is further arranged in the combustion chamber, the combustion chamber is divided into a front combustion chamber body and a rear combustion chamber body through the middle arch, the front combustion chamber body is located over the air chamber at the head end, and the rear combustion chamber body is located over the rest of the air chambers. By means of the steam boiler, partial gasification combustion of the coal is achieved, the phenomenon of black smoke emitted from the boiler is avoided, and the carbon content of ash of the boiler can be reduced. Furthermore, the temperature of a coal layer can be reduced, and NOx can be reduced.

Description

technical field [0001] The invention relates to a steam boiler, in particular to a steam boiler capable of partially gasifying coal and burning it efficiently. Background technique [0002] In the first 50 years of the 21st century, my country's energy development trend will still be dominated by fossil fuels. With the increasing shortage of oil and natural gas resources and the further development of clean coal technology, the importance and status of coal will gradually increase. According to the state of resources in our country and the proportion of coal in the energy production and consumption structure, the energy structure with coal as the main body will not change for quite a long time. [0003] The equipment that converts the chemical energy contained in coal into heat energy is the boiler. Boilers can be divided into boiling water boilers, hot water boilers, steam boilers, heat transfer oil boilers, hot air boilers, etc. according to their functions. Among them, ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the inherent defects of the existing chain furnaces that use pure solid fuel and carry out single-sided ignition, such as high requirements on the shape of the furnace arch in boiler design, high carbon content in ash and slag, low combustion efficiency, and black smoke from the boiler. , Boiler poor adaptability to fuel and other problems, and invented a steam boiler that can realize partial gasification and combustion of coal

Images