151 results about "Biogenic gas" patented technology

Granulated Activated Carbon (GAC) is used to remove hydrogen sulfide (H2S) from the biogas produced in an anaerobic digester. The cleaned biogas is then combusted in a reciprocating engine. The exhaust of the engine is passed through a heat exchanger and then through GAC in an adsorber to adsorb nitrogen oxides (NOx) and any sulfur oxides (SOx). The GACs containing NOx, H2S, and SOx, are transported to a microwave reactor, mixed, and exposed to microwave energy. The H2S and NOx are desorbed from the GAC and chemically combined to produce nitrogen, carbon dioxide, sulfur and water. Unreacted nitrogen oxides or hydrogen sulfide are transported to a second reactor containing carbon media to be reacted by a further microwave process. Sulfur is removed with a filter as a solid and the remaining inert components are vented to the atmosphere. The GAC is regenerated and reused to remove additional H2S and NOx.

Methods of stimulating biogenic production of a metabolic product with enhanced hydrogen content are described. The methods may include accessing a consortium of microorganisms in a geologic formation that includes a carbonaceous material. They may also include providing a phosphorous compound to the microorganisms. The phosphorous compound stimulates the consortium to metabolize the carbonaceous material into a metabolic product with enhanced hydrogen content. Also, methods of stimulating biogenic production of a metabolic product with enhanced hydrogen content by providing a yeast extract amendment to a consortium of microorganisms is described. The yeast extract amendment stimulates the consortium to metabolize carbonaceous material in the formation into the metabolic product with enhanced hydrogen content.

The invention relates to a biological gasifying furnace, and belongs to the technical field of furnaces. The biological gasifying furnace comprises a furnace body, at least one cleaning hole opening and closing device, a purifying cylinder, an adapting pipe and a fuel gas lead-out device, wherein the furnace body consists of a base, a furnace chamber and a spacer bush, the base corresponds to thelower part of the furnace chamber, the lateral part is provided with a cleaning hole, and the spacer bush is formed between the inner wall of the furnace body and the outer wall of the furnace chamber; the cleaning hole opening and closing device is arranged on the cleaning hole; the purifying cylinder is provided with a filter material chamber, the top of the purifying cylinder is provided with a filter material intake which is matched with a first opening and closing door, the bottom of the purifying cylinder is provided with a tar hopper of which the bottom is provided with a valve, the lower lateral part of the purifying cylinder is provided with a filter material outlet which is matched with a second opening and closing door, the bottom of the filter material chamber is provided witha filter material cushion, and a bleed air chamber is formed between the filter material cushion and the tar hopper; one end of the adapting pipe is connected with the furnace body and communicated with the spacer bush, while the other end is connected with the lower lateral part of the purifying cylinder and communicated with the bleed air chamber; and the fuel gas lead-out device is connected and communicated with the purifying cylinder. The biological gasifying furnace has the advantages of making biological energy source utilized effectively and protecting the environment.