Process for removal of organic sulphur from high sulphur coal and a device therefor

Abstract

A device for reduction of organic sulphur from high sulphur coal which employs a reactor having three heating zones such as steam heating zone capable of maintaining a temperature in the range of 450-500 degrees Celsius, a promoter zone capable of maintaining a temperature of the order of 950-1100 degrees Celsius and a reaction zone capable of maintaining a temperature in the range of 900-950 degrees Celsius. The reactor is placed inside a tubular furnace capable of providing the above temperature zones in the reactor. The furnace with the reactor inside is enclosed in a movable cabinet, the reactor and furnace being provided with energy regulators and indicators.

1 . A device for reduction of organic Sulphur from high Sulphur coal which comprises a reactor essentially consisting of three heating zones such as steam heating zone capable of maintaining a temperature in the range of 450-500 degree centigrade, a promoter zone capable of maintaining a temperature of the order of 950-1100 degree centigrade and reaction zone capable of maintaining a temperature in the range of 900-950 degree centigrade, the said reactor being placed inside a tubular furnace capable of providing the above said temperature zones in the said reactor, the said furnace with reactor inside being enclosed in a movable cabinet, the said reactor and furnace being provided with known energy regulators and indicators.  
     
     
         2 . A device as claimed in  claim 1  wherein the tubular furnace is made up of Silliminite and insulated by quartz wool.  
     
     
         3 . A process for removal of organic sulphur from high sulphur coal using the device as claimed in claim  1 - 2 , which comprises heating the promoter zone (containing the promoter) at a temperature in the range of 1100±50 degree Celsius and steam zone at a temperature in the range of 450 to 500 degree Celsius, crushing the input coal to −72 mesh BS and feeding into the reaction zone, producing steam in a flask, preferably made of glass and passing through the reactor, maintaining the temperature at 900 degree Celsius for about 1 hour, after it attains a temperature of about 900 degree Celsius, passing the gas evolved from the reactor through a series of bubblers, preferably made of glass, containing ammoniacal cadmium chloride solution, cooling the furnace to room temperature and discharging the product coke/char.  
     
     
         4 . A process as claimed in  claim 3 , wherein the promoter used is mixture of copper-iron turnings in the ratio of 1:9.  
     
     
         5 . A process as claimed in claims  2 - 4 , wherein the rate of rise in temperature in promoter zone and reaction zone is 5 degree Celsius per minute.  
     
     
         6 . A process as claimed in claim  2 - 5  wherein around 80% sulphur from the coal is removed by the process.