The present disclosure relates to a power production system that is adapted to achieve high efficiency power production using partial oxidation of a solid or liquid fuel to form a partially oxidized stream that comprises a fuel gas. This fuel gas stream can be one or more of quenched, filtered, and cooled before being directed to a combustor of a power production system as the combustion fuel. The partially oxidized stream is combined with a compressed recycle CO.sub.2 stream and oxygen. The combustion stream is expanded across a turbine to produce power and passed through a recuperator heat exchanger. The expanded and cooled exhaust stream can be further processed to provide the recycle CO.sub.2 stream, which is compressed and passed through one or more recuperator heat exchangers in a manner useful to provide increased efficiency to the combined systems.

The present disclosure relates to a power production system that is adapted to achieve high efficiency power production using partial oxidation of a solid or liquid fuel to form a partially oxidized stream that comprises a fuel gas. This fuel gas stream can be one or more of quenched, filtered, and cooled before being directed to a combustor of a power production system as the combustion fuel. The partially oxidized stream is combined with a compressed recycle CO.sub.2 stream and oxygen. The combustion stream is expanded across a turbine to produce power and passed through a recuperator heat exchanger. The expanded and cooled exhaust stream can be further processed to provide the recycle CO.sub.2 stream, which is compressed and passed through one or more recuperator heat exchangers in a manner useful to provide increased efficiency to the combined systems.

There are provided a cyclone body (50) into which a pressurized mixed fluid of slag and water is guided to centrifuge the slag from the water, and a pressure container (51) for housing the cyclone body (50), the cyclone body (50) being provided in its vertically lower portion with an opening (50d) that opens in the pressure container (51). The cyclone body (50) is provided in its inner peripheral surface with an abrasion-resistant material (56). The pressure container (51) includes a slag receiver (51d) below the opening (50d) of the cyclone body (50) to temporarily store slag.

There are provided a cyclone body (50) into which a pressurized mixed fluid of slag and water is guided to centrifuge the slag from the water, and a pressure container (51) for housing the cyclone body (50), the cyclone body (50) being provided in its vertically lower portion with an opening (50d) that opens in the pressure container (51). The cyclone body (50) is provided in its inner peripheral surface with an abrasion-resistant material (56). The pressure container (51) includes a slag receiver (51d) below the opening (50d) of the cyclone body (50) to temporarily store slag.

The purpose of the present invention is to provide a furnace wall in which a throat section with a smaller channel diameter than other regions can be formed using all peripheral wall tubes. Provided is a furnace wall comprising: a plurality of peripheral wall tubes (142), which are disposed so as to form a cylindrical shape when aligned in one direction and through the interior of which cooling water flows; and fins (140) that connect neighboring peripheral wall tubes (142) in an airtight manner. In a throat section in which the diameter of a horizontal cross-section of the cylindrical shape is reduced in comparison to other regions, the peripheral wall tubes (142) are disposed so as to be in mutual contact and the fins (140) are disposed on the inner circumferential sides of the cylindrical shapes.

The purpose of the present invention is to provide a furnace wall in which a throat section with a smaller channel diameter than other regions can be formed using all peripheral wall tubes. Provided is a furnace wall comprising: a plurality of peripheral wall tubes (142), which are disposed so as to form a cylindrical shape when aligned in one direction and through the interior of which cooling water flows; and fins (140) that connect neighboring peripheral wall tubes (142) in an airtight manner. In a throat section in which the diameter of a horizontal cross-section of the cylindrical shape is reduced in comparison to other regions, the peripheral wall tubes (142) are disposed so as to be in mutual contact and the fins (140) are disposed on the inner circumferential sides of the cylindrical shapes.

A carbon-based fuel gasification power generation system is configured to remove ammonia from syngas using washing water, and effectively use the ammonia-containing washing water. The system includes a gasification facility provided with a water scrubber for removing ammonia in the syngas generated as gasified carbon-based fuel, and a power generation facility provided with a combustor for burning gas for combustion generated in the gasification facility and air for combustion humidified in the humidifying tower, and a gas turbine driven by combustion gas. The ammonia-containing water recovered in the water scrubber is supplied to the humidifying tower. Using the water, compressed air to be supplied to the combustor is humidified.

A carbon-based fuel gasification power generation system is configured to remove ammonia from syngas using washing water, and effectively use the ammonia-containing washing water. The system includes a gasification facility provided with a water scrubber for removing ammonia in the syngas generated as gasified carbon-based fuel, and a power generation facility provided with a combustor for burning gas for combustion generated in the gasification facility and air for combustion humidified in the humidifying tower, and a gas turbine driven by combustion gas. The ammonia-containing water recovered in the water scrubber is supplied to the humidifying tower. Using the water, compressed air to be supplied to the combustor is humidified.

A process for the generation of energy and/or hydrocarbons and other products utilizing carbonaceous materials. In a first process stage (P1) the carbonaceous materials are supplied and are pyrolysed, wherein pyrolysis coke (M21) and pyrolysis gas (M22) are formed. In a second process stage (P2), the pyrolysis coke (M21) from the first process stage (P1) is gasified, wherein synthesis gas (M24) is formed, and slag and other residues (M91, M92, M93, M94) are removed. In a third process stage (P3), the synthesis gas (M24) from the second process stage (P2) is converted into hydrocarbons and/or other solid, liquid, and/or gaseous products (M60), which are discharged. The three process stages (P1, P2, P3) form a closed cycle. Surplus gas (M25) from the third process stage (P3) is passed as recycle gas into the first process stage (P1), and/or the second process stage (P2), and pyrolysis gas (M22) from the first process stage (P1) is passed into the second process stage (P2), and/or the third process stage (P3).

A process for the generation of energy and/or hydrocarbons and other products utilizing carbonaceous materials. In a first process stage (P1) the carbonaceous materials are supplied and are pyrolysed, wherein pyrolysis coke (M21) and pyrolysis gas (M22) are formed. In a second process stage (P2), the pyrolysis coke (M21) from the first process stage (P1) is gasified, wherein synthesis gas (M24) is formed, and slag and other residues (M91, M92, M93, M94) are removed. In a third process stage (P3), the synthesis gas (M24) from the second process stage (P2) is converted into hydrocarbons and/or other solid, liquid, and/or gaseous products (M60), which are discharged. The three process stages (P1, P2, P3) form a closed cycle. Surplus gas (M25) from the third process stage (P3) is passed as recycle gas into the first process stage (P1), and/or the second process stage (P2), and pyrolysis gas (M22) from the first process stage (P1) is passed into the second process stage (P2), and/or the third process stage (P3).