Coal-saving desulfurization additive for power plant boiler

Abstract

The invention discloses a power plant boiler used coal-saving desulfurating additive, which is prepared by mixing calcium oxide, silicon dioxide, calcium ammonium nitrate, sodium nitrate, potassium permanganate, ammonium nitrate, iron oxide, alumina, activated carbon and borax by curtain weight percentages; and then using a pulverizing mill to pulverize the mixture into power, the granularity of which is 80-100 MU; putting the power into a stirrer and stirring the power; packing the power into finished product after the power is tested to be qualified. The invention has obvious sulfur capturing and desulfurizing effects, can save energy and support combustion, can lower the blackness of the exhausted smoke, can clear ashes and remove coke, and need not change the existing combustion process and equipment. The invention is in particular applicable for the coals with high ash content, high sulfur content and low volatile constituent content. The invention can reduce equipment leakage accident caused by poor quality of coal, can ensure the safe operation of the boiler effectively, can ensure the safe operation of electric generating set, therefore being worthy to be spread by all thermal power plants.

Description

Coal-saving desulfurization additives for boilers in power plants technical field The invention relates to a coal-burning additive, in particular to a coal-saving desulfurization additive for boilers in power plants. Background technique my country's energy production and consumption are dominated by coal, which accounts for more than 70% of my country's energy consumption. 80% of coal consumption is used for combustion, and coal combustion is the main source of sulfur dioxide and nitrogen oxides in the atmosphere. Sulfur dioxide and soot emissions from coal combustion account for 80-90% of the total emissions. During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life. At the same time, during the combustion of coal, SO2 and a small part of SO3 are emitted into the atmospher...

AI Technical Summary

Problems solved by technology

During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life

At the same time, during the combustion of coal, SO2 and a small part of SO3 are emitted into the atmosphere, seriously polluting the atmosphere.

In order to vigorously carry out clean production and reduce pollutant emissions, at present, coal-fired boilers are generally installed with flue gas desulfurization devices. Although the installation of such desulfurization devices for coal-fired boilers has some effect on desulfurization, the existing combustion process and equipment need to be changed. And the desulfurization effect is not very obvious, and it does not play a combustion-supporting role in the combustion of boiler coal