COAL GASIFIER PLANT PROJECT

Two stages cold&clean Coal Gasifier Technology Advantage

• 1. Producing and cleaning of gas from gasifier top

• At first,the coal will be evaporated £¨90¡«150¡æ)in process of low temperature carbonization,then taken off the volatile matter£¨150¡«550¡æ£©.the volatile matter contains the tar,alkane gas,phenol and H2¡¢CO2¡¢CO¡¢H2O,the gas of top gasifier is mixed by
retort gas and a part of gas from gasification segment,that accounts for about 40% of the total amount of gas.its higher heat value£¨7400KJ/NM3£©,lower temperature(120¡æ)and contains plentiful tar.the gas of top gasifier take off the tar through the electric tar arrester
£¨90¡«120¡æ£©,then goes into intercooler.the tar yield is uncertain with different coal type,that account for about 3¡«6% of the total amount of coal.it can be used chemical materials or fuel .(the heat value is 9000kcal£¯kg above)

• 2. In gasification segment,the broiling carbocoal and gasifying agent will generate the gas by oxidation,reduction and a series of chemical reactions,that compose of bottom gas,called gasified gas,which account for about 60% of the total amount of gas.its lower heat value (6000KJ/NM3£©,higher
temperature(450¡æ£©.the bottom gas contains a small amount ash because of near the ash layer but not contains tar because the coal become carbocoal by enough low temperature carbonization time in carbonization segment.at first,the bottom gas (400¡«550¡æ)will be dust removaled by cyclone dust
collector,and then goes into phenol-water evaporator,(the temperature will fall to about 200¡æ)then goes into wind cooler(the temperature will fall to about 80¡æ),at last the bottom gas and the top gas mix and goes into intercooler.

• 3.Cleaning of mixed gas

• The temperature of mixed gas will fall to about 35¡«45¡æ in intercooler,then goes into electric light oil arrester,the light oil and ash will be taken off,become phenol-water mixture contains light oil.but the weight of light oil is lighter than phenol water layer,so it can be
separated.at last,the compressed gas supply to user by gas pressurizing booster fan.