Energy-saving and environment-friendly boiler for thermal power plant

Abstract

The invention discloses an energy-saving and environment-friendly boiler for a thermal power plant, which comprises a coal inlet, a coal inlet pipe, a blower, a blast pipe, a coal mill, a pulverizer, a pulverizer blowing pipe, a pulverized discharge pipe, a multi-head pulverized coal outlet, and a boiler. Wall, evaporation chamber, drum boiler, steam pipe, superheater, water inlet pipe, economizer, air preheater, air inlet pipe, air outlet, blower, exhaust gas pipe, dust collector, desulfurization chamber, nitrogen removal chamber, Exhaust gas turbine, chimney, slag blowing outlet, slag outlet and slag discharge ditch, the coal inlet is connected to the coal inlet pipe, the coal inlet pipe is connected to the coal mill, the bottom of the coal mill is connected to the blast pipe, and the drum The air duct is connected to the blower, the position of the pulverizer relative to the blast pipe is connected to the powder blowing pipe, the powder blowing pipe is connected to the powder discharger, and the powder discharger is connected to the powder discharge pipe. The temperature of the waste gas is lowered while the temperature of the inlet water and the intake air is increased, which saves energy, and the waste gas is treated with dust removal, desulfurization and nitrogen removal to reduce the degree of waste gas pollution.

Description

technical field [0001] The invention relates to thermal power generation equipment, in particular to an energy-saving and environment-friendly boiler for thermal power plants. Background technique [0002] Thermal power is the main power generation method in my country. Its basic production process is: when fuel is burned, water is heated to generate steam, the chemical energy of the fuel is converted into heat energy, the steam pressure drives the steam turbine to rotate, and the heat energy is converted into mechanical energy, and then the steam turbine drives the generator. Rotation converts mechanical energy into electrical energy. After many times of energy conversion, it usually causes great waste due to the energy conversion efficiency, especially the conversion of thermal energy into mechanical energy. The efficiency is usually below 40%, which will cause great waste. [0003] my country is rich in coal resources, so the commonly used thermal power boilers are coal-fi...

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Problems solved by technology

[0002] Thermal power generation is the main power generation method in my country. Its basic production process is: when the fuel is burned, water is heated to generate steam, and the chemical energy of the fuel is converted into heat energy. The steam pressure drives the steam turbine to rotate, and the heat energy is converted into mechanical energy, and then the steam turbine drives the generator. Rotate to convert mechanical energy into electrical energy. After multiple energy conversions, it usually causes great waste due to energy conversion efficiency, especially the conversion of thermal energy into mechanical energy. The efficiency is usually below 40%, which will cause great waste.

[0003] my country is rich in coal resources, so the commonly used thermal power boilers are coal-fired boilers, but the direct combustion of coal will cause serious pollution, and in some areas of my country, the coal sulfur and nitrogen content exceeds the standard, and the exhaust gas emitted by coal-fired power generation contains a large amount of sulfides, nitrogen oxides

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