Patent ID: 11884904
Assignee: ICM, INC.
Field: Biotechnology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 15:
16. A method comprising:
providing a single or multiple-stage process for production of alcohols, acids and/or other potentially valuable metabolic by-products, from biological fermentation of gases generated by industrial processes and/or gasification of organic materials by using a multiple-pass trickle reactor comprising an organism, the multiple-pass trickle bed reactor comprising multiple vessels with at least one vessel having at least one section, and further wherein the sections of the reactor include a first section and a second section separated by a liquid-gas barrier and wherein the sections are arranged sequentially, the reactor including the organism,
removing liquid fermentation broth from a bottom of the reactor and supplying the fermentation broth to a top of the reactor using a liquid recirculation circuit, and
recirculating gases within the first section using a first gas recirculation circuit and recirculating gases within the second section using a second gas recirculation circuit, wherein the first gas recirculation circuit and the second gas recirculation circuit each provides gas recirculation flow rates that range from 2× to 10× a volumetric flow of gases supplied to the reactor.