METHOD TO GASIFY SOLID FUEL Russian patent published in 2013 - IPC C10J3/84 B01J19/10 

FIELD: power engineering.

SUBSTANCE: method to gasify solid fuel consists in supplying fuel into a gas generator volume, its pyrolysis and gasification with subsequent treatment of the produced generator gas from moisture, resin and non-gasified remains of solid fuel. Treatment is carried out in the inner volume of the gas generator by exposure to ultrasonic oscillations with frequency of more than 20 kHz and intensity in the range of 130-145 dB. Oscillations are developed by a flat emitter of round or rectangular shape, oscillating when bent at the frequency, which is multiple to the main one. The emitter is excited with a longitudinally oscillating piezoelectric converter supplied with an electronic generator of ultrasonic frequency, which is placed outside the gas generator, but is acoustically connected to it. Exposure is simultaneously carried out by oscillations developed by both sides of the flat emitter, besides, oscillations developed by the emitter side, which is reverse to the inner volume of the gas generator, are sent into the gas generator volume after reflection and passing of the distance exceeding the longitudinal size of the emitter by the value multiple to the half of the length of emitted ultrasonic oscillations in air.

EFFECT: invention makes it possible to reduce carryover of resin, water vapours and non-gasified remains of solid fuel.

2 dwg