The whole process of chemical cleaning scale in a low pressure boiler was particularly introduced,and several suggestions on chemical cleaning to boiler were given.

Then,the reformation WGZ410/100-12 boiler at Wulashan Generation Plant by staged combustion and the effect of low NOx exhaust was presented.

In order to effectively conduct direct-current pulverized coal combustion and multiphase flow numerical simulation to achieve low NOx combustion coal.

The ultimate principles of NOx formation,low NOx burner and air staged combustion are analyzed herein.

The techniques used in low-NOx combustion system in Guohua Thermal Power Plant, Beijing, such as air staging, fuel staged, rich-lean combustion, are introduced.

This paper briefly introduces the first domestic ultra-super critical boiler of 1000 MW and combustion process of low Nox emissio

0+ combustion control system is being presented,with which optimal combustion efficiency and low NO_x emission can be attained,while simultaneously meeting control requirements during all stages of operation,such as ignition,control and allotment of fuel flow.

According to proceedings of the International Conference on Power Engineering, held in Kobe, Japan, in 2003, recent technical progress in low NO_x combustion, incineration of solid wastes, gasification of coal and solid wastes are being reviewed in the main.