A carbonaceous fuel gasification system includes a micronized char preparation system comprising a transport reactor with a pulverizer function that receives solid carbonaceous fuel, hydrogen, oxygen, and fluidizing steam that produces micronized char, steam, and volatiles. An indirect gasifier includes a pressure vessel reactor comprising a dense bed of solids. A draft tube can be inside or outside the pressure vessel. A combustor provides heat for the gasification reaction by combustion of hydrogen and air and that provides products of combustion that flow through the draft tube. A distributor plate receives the micronized char, steam, and devolatilized hydrocarbons from the output of the micronized char preparation system. The indirect gasifier mixes the micronized char with steam at a temperature that converts them to syngas comprising hydrogen and carbon monoxide.

Aspects of the invention relate to improvements in the flexibility with which oxygen and hydrogen, for example from electrolysis, may be supplied to processes having both gasification and methanation steps, as well as improvements in how such processes may be operated in response to variations in carbonaceous feeds. Offsets, between the ideal quantity of hydrogen and the quantity available from a given source may be compensated for by adjusting one or more operations of the process, and in particular such operation(s) that ultimately impact the quantity of CO and/or CO.sub.2 available downstream of the gasifier for conversion to methane in an RNG product stream.

The invention provides a hydrogen boiler based on coal gasification and water decomposition, including a steam boiler which includes an upper furnace and a lower furnace; water and steam in the upper furnace are respectively communicated with water and steam in the lower furnace; and the steam boiler is provided with a casing which has a narrow gap for containing water and a wide wall for heating to generate gas. The steam boiler contains multistage reactors. A coal modification and gasification device is provided at an outer side of the steam boiler and is provided with two chambers. The steam and gasified gas of coal are mixed and enter the reactors for direct burning to promote respective reactions. After several stages of modification and decomposition, the steam and the gasified gas of coal are completely converted to hydrogen.

A system for gasification of a material includes a plasma generator interfaced to a reaction chamber. A feedstock such as pulverized coal is fed into a plasma jet created by the plasma generator and is gasified by the high temperatures of the plasma jet. The gas produced is then collected, filtered, and utilized, for example, in generating of electricity. Likewise, extra heat produced by the system is also used to generate electricity or other heating purposes

The present invention includes a method for converting renewable energy source electricity and a hydrocarbon feedstock into a liquid fuel by providing a source of renewable electrical energy in communication with a synthesis gas generation unit and an air separation unit. Oxygen from the air separation unit and a hydrocarbon feedstock is provided to the synthesis gas generation unit, thereby causing partial oxidation reactions in the synthesis gas generation unit in a process that converts the hydrocarbon feedstock into synthesis gas. The synthesis gas is then converted into a liquid fuel.

Process for manufacturing a hydrogen-containing synthesis gas from a natural gas feedstock, comprising the conversion of said natural gas into a raw product gas and purification of said product gas, the process having a heat input provided by combustion of a fuel; said process comprises a step of conversion of a carbonaceous feedstock, and at least a portion of said fuel is a gaseous fuel obtained by said step of conversion of said carbonaceous feedstock.

A two-stage gasification reactor may include a reactor lower section and a reactor upper section. The reactor lower section may include (a) a lower reactor body, (b) two primary feed nozzles, configured to introduce at least one of a dry feedstock or a first slurried feedstock and located on opposing terminal ends of the lower reactor body, and (c) at least two secondary feed nozzles, configured to introduce a liquid hydrocarbon feedstock, located on the lower reactor body. The reactor upper section may include (a) an upper reactor body, (b) at least one upper feed nozzle, configured to introduce at least one of a dry feedstock or a first slurried feedstock, located on the upper reactor body, and (c) an outlet.

A carbonaceous feedstock gasification power generation facility, and a method for regulating a gas for drying gas this carbonaceous feedstock, are disclosed with which it is possible to expand the range of the types of carbonaceous feedstocks that can be used. High-temperature exhaust gas, low-temperature exhaust gas and extreme high-temperature exhaust gas are bled from the furnace respectively at a high-temperature bleed position, a low-temperature bleed position and an extreme high-temperature bleed position. When these exhaust gases are mixed, the flow volume of the extreme high-temperature exhaust gas supplied to at least one of the exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, is adjusted such that the temperature of at least one of these exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, reaches a prescribed temperature.

An apparatus for fuel gas production and combustion comprises a solid fuel feeding unit for receiving and feeding solid fuel; a gas producing unit being connected to the solid fuel feeding unit for receiving solid fuel from the solid fuel feeding unit; an air feeding unit connected to the gas producing unit for feeding air to the gas producing unit to cause a gasification reaction; an ash trapping unit connected to the gas producing unit for separating fly ash and dust from the fuel gas; a burner unit connected to the ash trapping unit for combusting the fuel gas; and an ash discharging unit connected to the gas producing unit and ash trapping unit and comprising a bottom ash discharging part and a fly ash discharging part, characterized in that the air feeding unit comprises a plurality of air feeding parts wherein at least one air feeding part being connected to the gas producing unit and at least one air feeding part being connected to the ash trapping unit.

A system for gasification of a material includes a plasma generator interfaced to a reaction chamber. A feedstock such as pulverized coal is fed into a plasma jet created by the plasma generator and is gasified by the high temperatures of the plasma jet. The gas produced is then collected, filtered, and utilized, for example, in generating of electricity. Likewise, extra heat produced by the system is also used to generate electricity or other heating purposes