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Coal Mill In Power Plant

Coal Mill In Power Plant

Details of this product

Gypsum Manufacturing Plant Supplier For Cement Additive Production Cost

Coal-fired power in India

India’s power industry has been straining to keep up with the country’s recent economic growth, and the expansion of power generation capacity has become a top priority. Consequently, NTPC plans to add 11 GW in capacity through the construction of new coal fired power plants by 2012. The Barth Power Plant is one of these planned facilities.Coal-fired power in India will rise from 95,000 MW to 294,000 MW over the next 11 years.From electricity production structure, coal power production in India is still the dominant fuel. Currently, coal-fired electricity produced occupied two-thirds of the national production of electricity or even morein India. There are reports that India will still mainly depends on coal-fired in the future .

The advantages of pulverized coal combustion

Pulverized coal fineness is an important property, the finer coal in the furnace combustion, incomplete combustion loss is smaller, and is conducive to stable combustion, but the milling system consumes more power consumption, equipment wear amount is large, on the contrary, although coarser coal power consumption is small, but not conducive to fuel combustion and burnout. Therefore, the operation of the boiler equipment, you should select the appropriate coal fineness incomplete combustion of mechanical milling system losses and power consumption, so the boiler system, you should select the appropriate coal fineness incomplete combustion of the mechanical loss and power consumption of the milling system and to a minimum.

Grinding coal in advance into very fine pulverized coal, greatly increases the contact area with the air, make the burning reinforcement.Pulverized coal fired boiler furnace temperature is higher, therefore, in addition to the coal of coal quality is poor, all kinds of coal can effectively in the pulverized coal furnace combustion, and burning more completely, combustion efficiency is high, about 88% to 88%.It can be fully realized mechanization and automation.Pulverized coal combustion is almost all large coal-fired boiler combustion mode.

Coal milling process

The most commonly used coal milling process machines have Jaw Crusher, Cone Crusher, Hammer Crusher, Ball Mill, Ultrafine Grinding, etc.At present, the most popular of coking coal milling process consists of jaw crusher after crushing, the material will be shipped to mill for grinding.Commonly used milling machine has low and medium speed mill.

Low Speed Mill

Low speed coal mill mainly for the steel Ball mill, referred to as “Steel Ball mill” or”Ball mill“.It is a rotating cylindrical or both ends for tapered roller, roller is equipped with steel ball inside.The speed of the drum is 15 ~ 25r/m.Work within the cylinder when the ball hit unceasingly and squeeze the coal, the coal mill pulverized coal into coal.

Medium-speed Mill

More types of medium-speed coal mill. Common are Raymond Mill, MTM Trapezium Grinder and MTW Milling Machine. Their common feature is milled parts by the relative motion of two grinding body composition. In both coal squeezed between the surface grinding, milling and crushed. Meanwhile, the air introduced into the coal mill and pulverized to a dry grinding zone in the upper part of the separator. After separation, a certain size of pulverized coal with the air brought out outside the mill, coarse coal in return grinding zone regrinding.

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