NOVELTY - The biomass pyrolysis process comprises mixing a biomass feedstock with a heat carrier, conveying the solid feedstock components in a pyrolysis reactor, introducing a low ash biomass into the gasifier, conveying the biomass feedstock and a heat transfer medium from respective biomass feedstock and heat transfer medium input ports through a pyrolysis zone of a pyrolysis apparatus (10) to produce a solid and gaseous biomass pyrolysis product, and conveying a solid products from an output port of the apparatus back to the heat transfer medium input port. The heat carrier comprises char.    USE - The biomass pyrolysis process is useful for a biomass gasification (claimed) to produce renewable gaseous and solid fuels from biomass such as wood and wood bark.    ADVANTAGE - The biomass pyrolysis process produces a high proportion of gas phase, achieves rapid and efficient heating of the biomass feedstock and the products of pyrolysis to promote gasification using the a heat transfer medium, and reduces the vapor phase proportion of the pyrolysis products thus improving the efficiency of the biomass gasification process at low temperature.    DETAILED DESCRIPTION - The biomass pyrolysis process comprises mixing a biomass feedstock with a heat carrier, conveying the solid feedstock components in a pyrolysis reactor, introducing a low ash biomass into the gasifier, conveying the biomass feedstock and heat transfer medium from respective biomass feedstock and heat transfer medium input ports through a pyrolysis zone of a pyrolysis apparatus (10) to produce a solid and gaseous biomass pyrolysis product, and conveying a solid products from an output port of the apparatus back to the heat transfer medium input port. The heat carrier comprises char. The ratio by weight of the biomass to char is 1:1-1:20. The pyrolysis reactor is a screw/auger kiln. The process is operated at a temperature of less than 600 degrees C. The char produced in the pyrolysis process is recycled back into the pyrolysis process. The products of the pyrolysis process is conveyed to a gasifier apparatus, which operates at a temperature of 700 degrees C. The heat transfer medium includes solid heat carrier balls. INDEPENDENT CLAIMS are included for:    (1) a biomass gasification process;    (2) a biomass pyrolysis apparatus; and    (3) a biomass gasification apparatus.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic longitudinal cross sectional view of a pyrolysis apparatus.    Pyrolysis apparatus (10)    First screw/auger (12)    Rotatable shaft (14)    Inner cylindrical wall (16)    Second screw. (18)