A trend of coal fired boilers in thermal power stations and their environmental pollution control.

The technology of coal fired thermal power generation in our country has marked a remarkable progress after oil shock. Several new large coal fired boilers have been constructed and old middle class oil fired boilers have been reformed to coal fired ones. This report describes these progress and the status of today (especially in the problem of coal).Next, the prevention of environmental pollution of coal fired boilers are explained; The emission control of dust, SOx, and NOx in exhaust gas from boilers are achieved with dust collecter, flue gas desulfurization, improvement of combustion process and flue gas denitrization . The technology of waste water treatment at coal fired power plant has also advanced with rapid strides.Future development of coal fired boiler are also stated briefly.