Patent ID: 11939249
Assignee: PROTOTECH AS
Field: Environmental technology (Chemistry)
Classification: CPC C  F  H  Y | IPC C  F  H

Claim 15:
16. A method for converting aqueous salt containing sludge generated by sea-based fish farming or recirculating aquaculture systems (RAS) into gases and char using microwave radiation, the method comprising:
feeding, to a reactor, the aqueous salt containing sludge having a water content of 20-60% (weight/weight); and
subjecting, in the reactor, said sludge to heating at a temperature of 500° C. to 700° C. by microwave radiation, thereby generating heat and steam,
wherein during the subjecting, the following occurs simultaneously:
said sludge is partially or completely pyrolyzed in said reactor to produce pyrolysis products, wherein the pyrolysis products comprise CO gas, CH4 gas, H2 gas, CHO oil and solid C; and
said pyrolysis products are gasified with the steam in said reactor to produce CO gas and H2 gas, said steam resulting from microwave radiation heating of the water contained in said sludge.