US 12,434,280 B2
Method and apparatus for the treatment of waste material
David Ryan, Bridgend (GB)
Assigned to POWERHOUSE ENERGY GROUP PLC, Bridgend (GB)
Appl. No. 17/627,986
Filed by POWERHOUSE ENERGY GROUP PLC, Bridgend (GB)
PCT Filed Jul. 20, 2020, PCT No. PCT/GB2020/051732
§ 371(c)(1), (2) Date Jan. 18, 2022,
PCT Pub. No. WO2021/009520, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 1910309 (GB), filed on Jul. 18, 2019.
Prior Publication US 2022/0258218 A1, Aug. 18, 2022
Int. Cl. B09B 3/45 (2022.01); F23G 5/027 (2006.01); F23G 5/033 (2006.01); F23G 5/46 (2006.01); F23G 5/50 (2006.01); F23L 7/00 (2006.01)
CPC B09B 3/45 (2022.01) [F23G 5/027 (2013.01); F23G 5/033 (2013.01); F23G 5/46 (2013.01); F23G 5/50 (2013.01); F23L 7/005 (2013.01); F23G 2900/00001 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of treating comminuted waste material, the method comprising:
a) providing an apparatus for treating comminuted waste material, the apparatus comprising a heating chamber and plural combustion heaters for heating the contents of the heating chamber, the heating chamber having an inlet and an outlet and comprising a first, a second zone, and a third zone, and wherein the apparatus comprises a wall surrounding an outer surface of the heating chamber and heating space defined between the wall and the outer surface of the heating chamber, wherein said plural combustion heaters are located, in use, outside the heating chamber and are configured to heat the heating space to thereby heat the comminuted waste material within the heating chamber,
b) feeding comminuted waste material through the inlet and into the heating chamber;
c) heating the comminuted waste material in the first, second and third zones of the heating chamber, using said plural combustion heaters, to generate a combustible gas;
d) supplying at least a portion of the generated combustible gas to said plural combustion heaters for heating the first, second and third zones of the heating chamber; and
e) heating the comminuted waste material in the first zone of the heating chamber to a first temperature T1 to gasify the comminuted waste material; heating the gasified material in the second zone of the heating chamber to a second temperature T2 to generate combustible gas, where the second temperature T2 is greater than the first temperature T1, and heating the combustible gas in the third zone of the heating chamber to a third temperature T3 which is greater than the first temperature T1, and
adjusting the amount of heat applied by the said one or more combustion heaters to the first, second, and third zones of the heating chamber by altering the ratio of two or more fuel components supplied to said plural combustion heaters.