In one embodiment described herein, fuel may be converted into syngas by a method comprising feeding the fuel and composite metal oxides into a reduction reactor in a co-current flow pattern relative to one another, reducing the composite metal oxides with the fuel to form syngas and reduced composite metal oxides, transporting the reduced composite metal oxides to an oxidation reactor, regenerating the composite metal oxides by oxidizing the reduced composite metal oxides with an oxidizing reactant in the oxidation reactor, and recycling the regenerated composite metal oxides to the reduction reactor for subsequent reduction reactions to produce syngas. The composite metal oxides may be solid particles comprising a primary metal oxide and a secondary metal oxide.

In one embodiment described herein, fuel may be converted into syngas by a method comprising feeding the fuel and composite metal oxides into a reduction reactor in a co-current flow pattern relative to one another, reducing the composite metal oxides with the fuel to form syngas and reduced composite metal oxides, transporting the reduced composite metal oxides to an oxidation reactor, regenerating the composite metal oxides by oxidizing the reduced composite metal oxides with an oxidizing reactant in the oxidation reactor, and recycling the regenerated composite metal oxides to the reduction reactor for subsequent reduction reactions to produce syngas. The composite metal oxides may be solid particles comprising a primary metal oxide and a secondary metal oxide.

Provided is a process for producing hydrogen gas in a separate stream from syngas. An assembly for producing hydrogen gas in a separate stream from syngas and a method of producing hydrogen are also provided.

There is provided coal gasification unit including: a coal gasifier; a char recovery unit; flare equipment; an air flow rate adjustment valve and an oxygen supply flow passage that supply oxygen-containing gas to the coal gasifier; an inert gas supply flow passage that supplies nitrogen gas to an upstream side of the char recovery unit; and a control unit that controls a supply amount of the oxygen-containing gas and a supply amount of the nitrogen gas, in which the coal gasifier has a starting burner, and in which the control unit controls the supply amount of the nitrogen gas prior to starting combustion of starting fuel by the starting burner so that an oxygen concentration of mixed gas in which combustion gas generated by combustion of the oxygen-containing gas and the starting fuel has been mixed with the nitrogen gas becomes not more than an ignition concentration.

A gasification reactor for conversion of a feedstock to syngas and biochar. The gasification reactor includes a biomass input configured to receive feedstock, a gasifying medium inlet adjacent to the biomass input and configured to receive a gasifying medium, and a reactor vessel configured to gasify the feedstock with the gasifying medium to generate syngas and biochar. The reactor vessel is disposed downstream of the gasifying medium inlet. The reactor vessel may comprise cement along an inner surface of the reactor vessel. The reactor vessel may further comprise a blower coupled to the gasifying medium inlet to drive the gasifying medium into the reactor vessel. The reactor vessel may further comprise a biomass movement instrument to regulate the flow of the feedstock.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

A system and a method for preparing hydrogen-rich syngas by taking biogas as a composite gasification agent for the gasification of biogas residue are provided. The system includes an anaerobic fermenter for biomass gradient, a solid-liquid separation device, a drying reactor, a gasification reactor, a condensing tower, and a syngas purifier; the anaerobic fermenter for biomass gradient is connected to the drying reactor through the solid-liquid separation device, to transport separated biogas residue to the drying reactor, and the drying reactor and the anaerobic fermenter for biomass gradient are connected to the gasification reactor, respectively, to jointly input biogas and a biogas residue dried into the gasification reactor for reaction; and the gasification reactor is connected to the condensing tower, to transport reaction products to the condensing tower, the condensing tower is connected with the syngas purifier, performing purification treatment on a gas cooled, to obtain the hydrogen-rich syngas.