Provided is a powder fuel supply apparatus comprising a distributor (84) that branches supplied powder fuel to a plurality of branch tubes (82), a plurality of burners (126a) connected to downstream ends (82a) of the plurality of branch tubes (82), respectively, to supply char into a gasification furnace that gasifies the powder fuel, a flow nozzle (85) provided in each of the plurality of branch tubes (82), to apply pressure loss to char flow in the branch tube (82), a differential pressure gauge (86) that measures a differential pressure generated by the flow nozzle (85), and a control unit that determines decrease in flow velocity of the char flow based on the differential pressure obtained by the differential pressure gauge (86).

Pre-ground plastics of small particle size not more than 2 mm are co-fed into a solid fossil fuel fed entrained flow partial oxidation gasifier. A syngas composition can be made by charging an oxidant and a feedstock composition comprising recycle plastics and a solid fossil fuel to a gasification zone within a gasifier; gasifying the feedstock composition together with the oxidant in said gasification zone to produce said syngas composition; and discharging at least a portion of said syngas composition from said gasifier; wherein the recycled plastics are added to a feed point comprising a solid fossil fuel belt feeding a grinder after the solid fossil fuel is loaded on the belt, a solid fossil fuel belt feeding a grinder before the solid fossil fuel is loaded onto the belt, or a solid fossil fuel slurry storage tank containing a slurry of said solid fossil fuel ground to a size as the size fed to the gasification zone.

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.

The object is to provide a powder fuel feed apparatus, a gasifier unit, and an integrated gasification combined cycle and a control method of a powder fuel feed apparatus that can suppress deformation of a sintered metal filter with simple and inexpensive configuration. An embodiment includes: a distributor pipe (89) in which a mixed gas containing moisture and a gas in which pulverized coal and nitrogen transported with the pulverized coal are mixed is transported; and a diluting nitrogen system (90) that, when a flow velocity of the mixed gas is less than a predetermined threshold, additionally supplies a diluting nitrogen to a mixing chamber (97) connected to the distributor pipe (89) and forming a part of the distributor pipe (89), and the diluting nitrogen system (90) continuously supplies a predetermined flow rate of the diluting nitrogen to the mixing chamber (97).

The object is to provide a powder fuel feed apparatus, a gasifier unit, and an integrated gasification combined cycle and a control method of a powder fuel feed apparatus that can suppress deformation of a sintered metal filter with simple and inexpensive configuration. An embodiment includes: a distributor pipe (89) in which a mixed gas containing moisture and a gas in which pulverized coal and nitrogen transported with the pulverized coal are mixed is transported; and a diluting nitrogen system (90) that, when a flow velocity of the mixed gas is less than a predetermined threshold, additionally supplies a diluting nitrogen to a mixing chamber (97) connected to the distributor pipe (89) and forming a part of the distributor pipe (89), and the diluting nitrogen system (90) continuously supplies a predetermined flow rate of the diluting nitrogen to the mixing chamber (97).

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.

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 pressurizing nozzle includes a nozzle body; a filter that is provided to be perpendicular to the central axis direction of the nozzle body so as to cover the internal cross section of the nozzle body at the leading end portion on one end of the nozzle body and that is made of sintered metal having a prescribed thickness in the central axis direction; a retainer having an annular shape that is mounted to the leading end portion of the nozzle body so as to be disassemble and that fixes the outer circumferential portion of the filter via a pair of sealing parts; and a sealing portion that is disposed along the outer circumferential end face of the filter and that seals a fluid from flowing from the outer circumferential face toward the outside in the radial direction through the filter.

A pressurizing nozzle includes a nozzle body; a filter that is provided to be perpendicular to the central axis direction of the nozzle body so as to cover the internal cross section of the nozzle body at the leading end portion on one end of the nozzle body and that is made of sintered metal having a prescribed thickness in the central axis direction; a retainer having an annular shape that is mounted to the leading end portion of the nozzle body so as to be disassemble and that fixes the outer circumferential portion of the filter via a pair of sealing parts; and a sealing portion that is disposed along the outer circumferential end face of the filter and that seals a fluid from flowing from the outer circumferential face toward the outside in the radial direction through the filter.