Abstract: The invention relates to a process for the production of plant growth stimulator from fly ash, comprising treating fly ash with effluent NOx gases in a reactor under agitation at a temperature in the range of 60 to 100 degree celsius, for a time period in the range of 2 to 5 hours and treating the resulting material with effluent ammonia gas in the same reactor under ambient conditions for time period in the range of 20 to 50 minutes.

Abstract: The invention relates to a process for the production of plant growth stimulator from fly ash, comprising treating fly ash with effluent NOx gases in a reactor under agitation a a temperature in the range of 60 to 100 degree celsius, for a time period in the rane of 2 to 5 hours and treating the resulting material with effluent ammonia gas in the same reactor under ambient conditions for time period in the range of 20 to 50 minutes.

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.