Abstract: This powder transport device comprises: transport pipe (11) that can transport powder by way of gravity by having a prescribed angle of inclination; a porous plate (12) that is disposed along the transport pipe (11) so as to divide a line cross section into a top section and bottom section and form a powder line (11d) in the top section; an inert gas supply line for fluidization (13) that is provided under the porous plate (12) and supplies an assist gas (g) to the powder line (11d) through the porous plate (12); and a deposit status monitoring device (20) that constantly monitors the state of the powder deposited on the top face side of the porous plate (12) in the powder line (11d).

Abstract: Provided are a char feeding hopper that makes it possible to accurately measure char, a char recovery system, and a coal gasification combined power generation system. The char feeding hopper comprises: a char feeding hopper body that feeds separated char to a coal gasifier side; at least two casing tubes (121, 122) that are inserted from a side wall of the char feeding hopper body and that are provided so as to be aligned with one another in the vertical axis direction; a radiation source section (101) that is provided within the casing tube (121) and that emits ?-rays within the char feeding hopper body; and a ?-ray detector that is provided within the casing tube (122) and that detects emitted ?-rays. The cross-section of each casing tube (121, 122) has a shape that is provided with a tapered section (200) having an apex angle on the upper edge thereof.

Abstract: A slag crusher (20) is provided in a combustor of a gasifier (10) for gasifying a carbonaceous feedstock, and discharges falling slag generated in the combustor from the gasifier (10). The slag crusher (20) is provided with: a screen (22) provided so as to intersect with the direction in which the slag falls, the screen (22) having a plurality of openings (30) and passing slag having a diameter smaller than that of the openings (30); a spreader (24) for moving over the top surface of the screen (22) and crushing slag deposited on the top surface of the screen (22); and a nozzle (26) for spraying high-pressure water onto the slag deposited on the screen (22). The slag deposited on the top surface of the screen (22) thereby more easily passes from the openings (30) in the screen (22).

Abstract: This powder transport device comprises: transport pipe (11) that can transport powder by way of gravity by having a prescribed angle of inclination; a porous plate (12) that is disposed along the transport pipe (11) so as to divide a line cross section into a top section and bottom section and form a powder line (11d) in the top section; an inert gas supply line for fluidization (13) that is provided under the porous plate (12) and supplies an assist gas (g) to the powder line (11d) through the porous plate (12); and a deposit status monitoring device (20) that constantly monitors the state of the powder deposited on the top face side of the porous plate (12) in the powder line (11d).

Abstract: A powder conveyance device and a char recovery apparatus are each provided with: an inclination part serving as a powder discharge line which can convey char at a predetermined tilt angle by allowing the char to fall by gravity; a first porous plate having a predetermined opening ratio and being disposed along the inclination part; a second porous plate having a higher opening ratio than the first porous plate and being disposed along the inclination part at a position above the first porous plate; and an assist gas feed device for feeding assist gas to the inclination part through both the first porous plate and the second porous plate.

Abstract: The objective of the present invention is to facilitate passing of slag accumulated on a top face of a screen through openings in the screen. A combustor of a gasifier (10) that gasifies a carbonaceous feedstock is provided with a slag crusher (20) which discharges slag produced in and fallen from the combustor out of the gasifier (10). The slag crusher (20) comprises: a screen (22) which is provided transversely with respect to the fall direction of the slag and has a plurality of openings (30) to allow slag pieces that are smaller than the diameter of the openings (30) to pass through the screen (22); a spreader (24) which moves along the top face of the screen (22) and crushes the slag accumulated on the top face of the screen (22); and a nozzle (26) which spouts pressurized water onto the slag accumulated on the screen (22).

Abstract: Provided are a char feeding hopper that makes it possible to accurately measure char, a char recovery system, and a coal gasification combined power generation system. The char feeding hopper comprises: a char feeding hopper body that feeds separated char to a coal gasifier side; at least two casing tubes (121, 122) that are inserted from a side wall of the char feeding hopper body and that are provided so as to be aligned with one another in the vertical axis direction; a radiation source section (101) that is provided within the casing tube (121) and that emits ?-rays within the char feeding hopper body; and a ?-ray detector that is provided within the casing tube (122) and that detects emitted ?-rays. The cross-section of each casing tube (121, 122) has a shape that is provided with a tapered section (200) having an apex angle on the upper edge thereof.

Abstract: An ignition torch that can easily be inspected regardless of the state inside a gasification furnace. The ignition torch (10) extends from an outside of a gasification furnace (1) to an inside of the gasification furnace (1) so as to receive feed of fuel and combustion air from one end positioned outside of the gasification furnace (1) and to feed flames to the other end positioned in the inside of the gasification furnace (1). An opening/closing valve (24) is provided downstream in a fuel flow direction from an ignition section (22) provided at the outside of the gasification furnace (1). A flame-holding section (28) is provided on the other end of the ignition torch (10). Supporting fuel is supplied to the flame-holding section (28).

Abstract: A combustion burner and a pressurized gasification furnace provided with: a burner main body (41) capable of blowing a fuel gas in which fuel and air are mixed; and an ignition torch (42) that is provided inside the burner main body (41) and propagates a flame from the base end part of the torch, with the flame being discharged from the tip end part. By arranging the tip end part (42a) of the ignition torch (42) at the base-end side with respect to the tip end part (41a) of the burner main body (41), the thermal load at the tip end part of the ignition torch during ignition is reduced, and thus the durability can be improved.

Abstract: A powder conveyance device and a char recovery apparatus are each provided with: inclination part (112) serving as a powder discharge line which can convey char at a predetermined tilt angle by allowing the char to fall by gravity; a first porous plate (101) having a predetermined opening ratio and disposed along the inclination part (112); a second porous plate (102) having a higher opening ratio than the first porous plate (101) and disposed along the inclination part (112) at a position above the first porous plate (101); and an assist gas feed device (103) for feeding assist gas to the inclination part (112) through both the first porous plate (101) and the second porous plate (102). As a result of this configuration, powder and char can be efficiently and appropriately conveyed.

Abstract: Provided is an ignition torch that can easily be inspected regardless of the state inside a gasification furnace. An ignition torch (10) of the present invention extends from an outside of a gasification furnace (1) to an inside of the gasification furnace (1) so as to receive feed of fuel and combustion air from one end positioned at the outside of the gasification furnace (1) and to feed flames to the other end positioned in the inside of the gasification furnace (1). An opening/closing valve (24) is provided downstream in a fuel flow direction from an ignition section (22) provided at the outside of the gasification furnace (1). A flame-holding section (28) is provided on the other end of the ignition torch (10). Supporting fuel is supplied to the flame-holding section (28).

Abstract: A slag storage tank and a slag discharge system include a main body that stores slag, and a plurality of filters that are arranged on a wall surface of the main body and cause a liquid to selectively pass therethrough. The filters are disposed in at least a part of any cross-section perpendicular to the vertical direction of a region where the slag is stored in the main body. Accordingly, there is an effect that the slag storage tank capable of stably discharging the liquid and the slag discharge system capable of further simply and appropriately discharging the slag may be provided.

Abstract: There is provided a slag discharging system having high flexibility in layout and capable of stable slag discharge in low cost with high reliability. The slag discharging system is configured to rapidly cool slag, discharged by producing combustible gas in a gasification furnace, within cooling water into glassy slag, collect the slag along with the cooling water discharged out of a system of the gasification furnace into a slag reservoir, and thereafter convey the slag from the slag reservoir to a slag storage tank; and this slag discharging system includes a slag slurry tank for collecting the slag from the slag reservoir into water so as to make the slag into slurry therein, slag slurry piping for making a connection between the slag slurry tank and the slag storage tank, and a pump so disposed in the slag slurry piping as to suck the slag slurry within the slag slurry tank and feed the slag slurry to the slag storage tank.