Supercharging pulp feeding system of coal water slurry fuel and method thereof

Abstract

The invention discloses pressurization slurry supply system and method for coal-water slurry fuel. The pressurization slurry supply system for coal-water slurry fuel comprises an air compressor, a balance tank, a slurry supply tank connected in turn, the slurry supply tank is provided with a pressure meter, also an electric control box and a frequency convertor, signal of the pressure meter is inputted into the electrical control box which outputs frequency signal to the frequency convertor, the frequency signal controls rotation speed of the air compressor. The pressurization slurry supply method for coal-water slurry fuel comprises: driving the slurry tank to transfer high-pressure water-coal slurry by pressurizing air, altering frequency of the input apparatus of pressurizing the air to adjust the pressure of inputted pressurized air. Because the supplied slurry is determined by the pressurized air in the slurry supply tank, the pressure of the pressurized air is controlled by the frequency convertor, such that the slurry supply amount is adjusted by controlling the frequency convertor with the electrical control box, thus the equipment abrasion is reduce because screw pumps are unnecessary, slurry supply is stable, energy consumption cost is reduced thereby being convenient for chief stoker worker to operate.

Description

technical field [0001] The invention relates to a slurry supply system for coal-water slurry fuel, in particular to a pressurized slurry supply system and method capable of burning various coal-water slurry fuels. Background technique [0002] At present, the slurry supply system of coal-water slurry fuel on the market basically uses a coal slurry screw pump to supply slurry, but because the coal slurry is a mixture of finer particles and water, the wear of the screw pump is accelerated, and in order to achieve the slurry supply pressure, Just must increase the slurry supply frequency, like this just needs to increase the revolution number of motor and causes the rising of electricity cost. In addition, because the screw is used to directly push the coal slurry to generate pressure, the stability is poor, and there is no room for buffering, resulting in accelerated wear of the screw. Contents of the invention [0003] In order to overcome the defects of the prior art, the...

AI Technical Summary

Problems solved by technology

[0002] At present, the slurry supply system of coal-water slurry fuel on the market basically uses a coal slurry screw pump to supply slurry, but because the coal slurry is a mixture of finer particles and water, the wear of the screw pump is accelerated, and in order to achieve the slurry supply pressure, It is necessary to increase the frequency of pulp supply, so that the number of revolutions of the motor needs to be increased, resulting in an increase in electricity costs

In addition, because the screw rotates to directly push the coal slurry to generate pressure, the stability is poor and there is no room for buffering, resulting in accelerated wear of the screw

Images