NOVELTY - The thermo-chemical gasification system comprises a ceramic lined insulated reactor (1), a level sensor (5), a pneumatically operated knife edge gate valve (4), an extraction system with a motor (8), a chair bin, vertical grates inside the reactor, a cyclone, an air blower (10), an air ejector, a loading unit, a starting unit, an operating unit, a control unit, a blowing unit, an extracting unit, a separating unit, and a recovering unit. The ceramic lined insulated reactor includes a lock hopper mechanism. The loading unit is configured to load a fuel using lock hoppers.    USE - The thermo-chemical gasification system is useful for producing high quality charcoal from coconut shell and other low ash content biomass with capture of useful gaseous fuel produced as by-product, where the charcoal is useful for manufacturing char.    ADVANTAGE - The thermo-chemical gasification system energy efficiently produces the charcoal from the coconut shell and other low ash content biomass with high quality and improved yield and without emission of green house gases.    DETAILED DESCRIPTION - The thermo-chemical gasification system comprises a ceramic lined insulated reactor (1), a level sensor (5), a pneumatically operated knife edge gate valve (4), an extraction system with a motor (8), a chair bin, vertical grates inside the reactor, a cyclone, an air blower (10), an air ejector, a loading unit, a starting unit, an operating unit, a control unit, a blowing unit, an extracting unit, a separating unit, and a recovering unit. The ceramic lined insulated reactor includes a lock hopper mechanism. The loading unit is configured to load a fuel using lock hoppers. The starting unit is configured to start up under suction mode. The operating unit is configured to operate under pressurized mode. The control unit is configured to control air and gas flow rates for meeting a charcoal quality. The blowing unit is configured to blow air into the reactor at a superficial velocity of 0.4-0.5 m/s using the blower. The extracting unit is configured to extract charcoal using an extraction screw system. The separating unit is configured to separate dust from hot gas by the cyclone. The recovering unit is configured to recover heat from hot gas by blowing cold air. The starting unit comprises a unit to fill the reactor with charcoal above an ignition port level, a unit to feed a biomass to a gasifier up to a top, a unit to spread the biomass uniformly using the spreader, a unit to pump motive air through the ejector using blower, and a unit to ignite a charcoal bed using hot air at greater than 700 degrees C or using a flame torch. The operating unit comprises a unit to close the lock-hopper valves of a biomass feeding mechanism, a unit to close the ignition ports in the reactor, a unit to change over an air line from the ejector to a reactor top entry line, a unit to change over a gas line from the reactor to a gas bypass line, a unit to burn the gas in flare burner or gas burner of a boiler, and a unit to generate steam required for process or power generation. The thermo-chemical gasification system generates charcoal from coconut shells and other biomass under controlled conditions, where char is adapted for high value activated charcoal production with generation of producer gas. The charcoal generation is present in a range of 5-35 % of biomass input with generation of producer gas of lower calorific value of 3-4.5 MJ/kg. The char extraction is varied up to 35%, and the production of producer gas from biomass is for the entire capacity range amounting to a turn down ratio of 1:5. A unit for providing controlled air supply and steam supply is attained to generate low and high surface area charcoal. The pressure required for the air supply is 3000-5000 Pa. An INDEPENDENT CLAIM is included for a method for thermo-chemical gasification for production of high quality charcoal from coconut shell and other low ash content biomass.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a gasification system for char extraction.    Ceramic lined insulated reactor (1)    Pneumatically operated knife edge gate valve (4)    Level sensor (5)    Motor (8)    Air blower. (10)