Gasifier comprising vertically successive processing regions

A vertically oriented gasifier for conversion of carbonaceous feedstock into gas and residue, the gasifier comprising:

• one or more processing chambers, each one of which comprising one or more additive input elements for input of additives therein, wherein combination of said one or more processing chambers and a positioning of said one or more additive input elements thereof promoting creation of two or more vertically successive processing regions within the gasifier within each one of which a respective process is at least partially favoured, said processing regions being identified by temperature ranges respectively enabling each said respective process;
• one or more feedstock inputs proximal to a first of said processing regions;
• one or more material displacement control modules adapted to control a vertical movement of the feedstock through said processing regions to enhance each said at least partially favoured process;
• one or more gas outputs;
• and
• one or more residue outputs.

A method for converting a carbonaceous feedstock into gas and residue comprising the steps of:

• providing a gasifier;
• creating two or more vertically successive processing regions within said gasifier, within each one of which a respective process selected from the group consisting of drying, volatilization and carbon conversion is at least partially favoured, said processing regions being identified by temperature ranges respectively enabling each said respective process,
• inputting additives within the gasifier to promote each said at least partially favoured process;
• controlling a downward movement of the feedstock through said processing regions thereby optimizing each said at least partially favoured process;
• and
• outputting the gas and residue from the gasifier.