摘要:
A system for pyrolysis or gasification having a first pyrolysis or gasification unit 50 connected to a second pyrolysis or gasification unit 53 by a hermetically sealed gas path. Pyrolysis is used to destroy calorific waste and/or to produce gas therefrom.
摘要:
A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.
摘要:
Process for preparing a hydrocarbon product from a solid carbonaceous fuel (8), the process at least comprising the steps of: (a) supplying a solid carbonaceous fuel (8) and an oxygen containing stream (9) to a burner of a gasification reactor (10), wherein a CO2 containing transport gas (30, 32) is used to transport the solid carbonaceous fuel (8) to the burner wherein the weight ratio of CO2 to the carbonaceous fuel in step (a) is less than 0.5 on dry basis.; (b) partially oxidising the carbonaceous fuel in the gasification reactor, thereby obtaining a gaseous stream at least comprising CO, CO2, and H2 (11); (c) removing the gaseous stream obtained in step (b) from the gasification reactor; (d) optionally shift converting (16) at least part of the gaseous stream as obtained in step (c) thereby obtaining a CO depleted stream, (e) subjecting the gaseous stream of step (c) and/or the optional CO depleted stream of step (d) to a Fischer-Tropsch reaction to obtain a hydrocarbon product (24).
摘要:
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 γ-rays within the char feeding hopper body; and a γ-ray detector that is provided within the casing tube (122) and that detects emitted γ-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.
摘要:
A coal feed system to feed pulverized low rank coals containing up to 25 wt % moisture to gasifiers operating up to 1000 psig pressure is described. The system includes gas distributor and collector gas permeable pipes imbedded in the lock vessel. Different methods of operation of the feed system are disclosed to minimize feed problems associated with bridging and packing of the pulverized coal. The method of maintaining the feed system and feeder device exit pressures using gas addition or extraction with the pressure control device is also described.
摘要:
Apparatuses, systems, char cooling augers, and methods for cooling biochar are described. An example system may include a char cooling auger coupled to a gasifier. The char cooling auger including a receiving hopper and an outer tube. The receiving hopper configured to receive and hold biochar from the gasifier. The receiving hopper configured to feed the biochar to a screw conveyor. The screw conveyor configured to rotate to transport the biochar from a first end of the outer tube to an outlet port near a second end of the outer tube. A temperature of the outer tube is less than a temperature of the biochar such that the biochar is cooled as transported through the outer tube prior to collection of the biochar.
摘要:
A system to provide a particulate solid material to a pressurized gasification reactor includes a low pressure storage vessel fluidly connected to the inlet of a bulk materials pump, a first part of a transport conduit directly connecting the outlet of the bulk materials pump to an inlet of a diverter valve, a second part of the transport conduit connecting an outlet of the diverter valve to a burner as present in a reactor vessel, wherein said diverter valve is provided with a second outlet connecting a recycle conduit with the low pressure storage vessel and which diverter valve is adjustable to either fluidly connect the bulk materials pump to the burner or alternatively fluidly connect the bulk materials pump to the low pressure storage vessel.
摘要:
Apparatuses, systems, mobile gasification systems, and methods for gasifying residual biomass are described. An example system may include a mobile gasification system configured to gasify feedstock generated from residual biomass to provide syngas. The mobile gasification system may be configured to generate electrical power using the syngas. The mobile gasification system may be configured to be installed in a transportable structure.
摘要:
A downdraft gasifier is disclosed. The gasifier includes a biomass section that accepts and stirs raw biomass materials, a pyrolysis and tar cracking section having an inner cylinder for receiving biomass and an outer surrounding cylinder for gases from the biomass, and a char gasification section for receiving biomass and gases from the pyrolysis and tar cracking section. The char gasification section provides a grating and scraper for passing gases and ash and retaining biomass for char gasification on the grate.
摘要:
A method for transporting a solid particulate within a gasifier system is provided. The method includes discharging solid particulate through an inlet into an opening defined within a rotor, wherein the inlet and the solid particulate are at a first pressure. The method further includes rotating the rotor such that at least one end of the opening is aligned in flow communication with a duct at a second pressure that is different from the first pressure. The solid particulate is discharged from the rotor opening through an outlet such that the solid particulate is at the second pressure, and the rotor is rotated such that at least one end of the rotor opening is aligned in flow communication with a pressure source that is at approximately the first pressure, and such that the opening is at the first pressure.