A gasifier system that combines the use of dirty fuels with clean fuels such as biomass. The heat created produces steam for the co-generation of mechanical power and electricity. The dirty fuels are converted in a gasifier or a pyrolyzer into various useful products that include syngas, heat, and oils. Syngas that is produced by the dirty fuels normally emits pollutants when combusted that require scrubbing. However, when the syngas is combusted into a biomass gasifier the dirty fuel emissions are scrubbed by being reformed into a much cleaner syngas/producer gas. Heat transferred from the dirty fuels gasifier/pyrolyzer syngas increases the efficiency of the clean fuels gasifier that results in increased amounts of steam for electricity/power production. In lieu of producing steam, the syngas from the clean fuel gasifier can be used to fuel an engine for power production. Other outputs from the clean-fuels gasifier include biochar and ash.

A system is described for automatically processing biomass using a series of mechanisms that operate in unison to maintain solids flow through small gasifiers that are otherwise prone to blockage. The system can include an anti jamming mechanism to automatically clear jams within said gasifier using input from at least one sensor.

A method of online control of a slag-forming process of gasification of a carbonaceous solid fuel, especially coal, in a gasification reactor with supply of a gasifying agent and a moderator is provided. Certain embodiments relate to a gasification process for producing a product gas including carbon monoxide and hydrogen from a solid fuel, to a computer program for online control of the slag-forming gasification process, and to a plant for conducting a gasification process for producing a product gas including carbon monoxide and hydrogen from a solid fuel. Certain aspects of the invention combine an online solid fuel analysis with a process model in order to operate a gasification process for solid fuels by the feed-forward principle at the thermodynamically optimal operating point. The invention permits the establishment of the operating point in real time in order to react to rapid variations in the composition of the solid fuel. Certain embodiments also permit the complete automation of the gasification process.

A method of online control of a slag-forming process of gasification of a carbonaceous solid fuel, especially coal, in a gasification reactor with supply of a gasifying agent and a moderator is provided. Certain embodiments relate to a gasification process for producing a product gas including carbon monoxide and hydrogen from a solid fuel, to a computer program for online control of the slag-forming gasification process, and to a plant for conducting a gasification process for producing a product gas including carbon monoxide and hydrogen from a solid fuel. Certain aspects of the invention combine an online solid fuel analysis with a process model in order to operate a gasification process for solid fuels by the feed-forward principle at the thermodynamically optimal operating point. The invention permits the establishment of the operating point in real time in order to react to rapid variations in the composition of the solid fuel. Certain embodiments also permit the complete automation of the gasification process.

The invention includes mixing gas or solid particulate fuel in a conduit segment that houses a mixing chamber. Fuel is fed through a fuel inlet port into the mixing chamber. High velocity combustion air from a blower is forced into the mixing chamber through a restricted orifice that generates a suction pressure for drawing gas or solid particulate fuel into the mixing chamber. A combustion chamber supply conduit delivers fuel from the mixing chamber into a burner.

The invention includes mixing gas or solid particulate fuel in a conduit segment that houses a mixing chamber. Fuel is fed through a fuel inlet port into the mixing chamber. High velocity combustion air from a blower is forced into the mixing chamber through a restricted orifice that generates a suction pressure for drawing gas or solid particulate fuel into the mixing chamber. A combustion chamber supply conduit delivers fuel from the mixing chamber into a burner.

The present invention provides a process for preparing higher-value products from carbonaceous feedstocks. The process includes converting carbonaceous feedstock in a hydromethanation reactor to a methane-enriched raw product stream, converting the methane-enriched raw product stream to an ammonia synthesis feed gas, then converting the ammonia synthesis feed gas to higher-value products such as ammonia and urea.

The invention includes a downdraft gasifier having a rotatable auger/grate extending through its reduction zone. The auger at times moves biofuel through the gasifier and at times supports it in the gasifier. A frusto-conical biomass grate funnels biomass onto the auger and is perforate for permitting the passage of gases while retaining the biomass. A guide tube surrounds the auger below the frusto-conical biomass grate. The invention also includes mixing gas or solid particulate fuel in a conduit segment that houses a mixing chamber. Fuel is fed through a fuel inlet port into the mixing chamber. High velocity combustion air from a blower is forced into the mixing chamber through a restricted orifice that generates a suction pressure for drawing gas or solid particulate fuel into the mixing chamber. A combustion chamber supply conduit delivers fuel from the mixing chamber into a burner.

The invention includes a downdraft gasifier having a rotatable auger/grate extending through its reduction zone. The auger at times moves biofuel through the gasifier and at times supports it in the gasifier. A frusto-conical biomass grate funnels biomass onto the auger and is perforate for permitting the passage of gases while retaining the biomass. A guide tube surrounds the auger below the frusto-conical biomass grate. The invention also includes mixing gas or solid particulate fuel in a conduit segment that houses a mixing chamber. Fuel is fed through a fuel inlet port into the mixing chamber. High velocity combustion air from a blower is forced into the mixing chamber through a restricted orifice that generates a suction pressure for drawing gas or solid particulate fuel into the mixing chamber. A combustion chamber supply conduit delivers fuel from the mixing chamber into a burner.

Provided is a pyrolysis gasification system including a hopper, a loading chamber, a gas generating furnace, an ash discharge unit, and an oxygen supply unit, wherein the loading chamber is provided at an upper end thereof with a first sealing gate to seal the loading chamber, and the gas generating furnace is provided at an upper portion thereof with a second sealing gate to seal the gas generating furnace, such that when the raw material is fed into the gas generating furnace, external air is prevented from entering the gas generating furnace and combustion gas in the gas generating furnace is prevented from being discharged to an outside, whereby oxygen is supplied into the gas generating furnace to increase the content and concentration of carbon monoxide and hydrogen in combustion gas generated during pyrolysis, and thus it is possible to increase the production of syngas.