CN115449401A - Coal gasification device - Google Patents
Coal gasification device Download PDFInfo
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- CN115449401A CN115449401A CN202211096924.7A CN202211096924A CN115449401A CN 115449401 A CN115449401 A CN 115449401A CN 202211096924 A CN202211096924 A CN 202211096924A CN 115449401 A CN115449401 A CN 115449401A
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- coal ash
- pipe
- gas
- coal
- feeder hopper
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- 238000002309 gasification Methods 0.000 title claims abstract description 71
- 239000003245 coal Substances 0.000 title claims abstract description 27
- 239000010883 coal ash Substances 0.000 claims abstract description 132
- 239000007787 solid Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 238000003860 storage Methods 0.000 description 9
- 239000010881 fly ash Substances 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/721—Multistage gasification, e.g. plural parallel or serial gasification stages
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0936—Coal fines for producing producer gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of coal gasification equipment, in particular to a coal gasification device which comprises a plurality of first gasification furnaces, a plurality of gas-solid separation devices, a coal ash collection part, a coal ash feed hopper and a second gasification furnace, wherein the plurality of gas-solid separation devices are respectively connected to the upper parts of the plurality of first gasification furnaces and the second gasification furnace, the bottoms of the gas-solid separation devices are connected with a return pipe, the lower end of the return pipe is connected with the coal ash collection part, the coal ash collection part is connected with the upper part of the coal ash feed hopper, a downward inclined feed pipe is arranged on the side surface of the coal ash feed hopper, and the lower end of the feed pipe is connected with the second gasification furnace. The coal ash generated by the gas-solid separation devices of the first gasification furnaces is efficiently collected through the coal ash collection part and conveyed to the collecting hopper, the coal ash can be efficiently discharged into the second gasification furnace through the coal ash feeding hopper, the conversion efficiency of the coal ash is improved, the coal ash recovery of a plurality of devices is integrated in the coal ash feeding hopper, the utilization rate of the gas-liquid mixing device is high, and energy conservation and emission reduction are realized.
Description
Technical Field
The invention relates to the technical field of coal gasification equipment, in particular to a coal gasification device.
Background
In the coal gas production process, a fluidized bed gasification furnace is commonly used, and crude coal gas is produced by introducing solid coal and oxygen into the gasification furnace. When the crude gas is discharged, a large amount of coal ash is carried, and the productivity is reduced.
In the prior art, in order to reduce the waste of coal ash, the coal ash separated by the gas-solid separation device is returned to the gasification furnace again to continue the reaction, so as to improve the conversion rate of the raw materials. In order to increase the circulation of the coal ash in the material returning pipe, a mechanical valve is connected to the material turning pipe, a blowing gas is externally connected, and the coal ash is blown into the gasification furnace through the blowing gas. However, the mechanical valve is subjected to a large scouring force of the fly ash, and the mechanical valve is seriously abraded, so that the running time of the material returning pipeline is short, the blowing pressure of the blowing gas is not easy to control, if the pressure of the blowing gas is too low, the fly ash cannot be blown into the fluidized bed gasification furnace, and if the pressure of the blowing gas is too high, high pressure in the fluidized bed gasification furnace is connected into the gas-solid separation device in series, so that the gas-solid separation device fails, and the fly ash cannot return into the gasification furnace. In addition, since the particle size of the fly ash is small, the fly ash is quickly carried out of the fluidized-bed gasification furnace by the gas due to the small particle size even when the fly ash is returned into the fluidized-bed gasification furnace, so that the residence time in the fluidized-bed gasification furnace is short, the conversion efficiency of the fly ash is low, and the fly ash is not effectively utilized.
In a coal gasification device of CN201810380824.4, a liquid supply unit is connected to an atomizing and granulating nozzle, so that coal ash separated from a gas-solid separation device is combined with a liquid medium to form coal ash particles, thereby improving the recovery and conversion efficiency of the coal ash.
However, in the coal gas production process in the prior art, a plurality of gasification furnaces are commonly used for producing coal gas simultaneously, and each gasification furnace is respectively connected with the device to occupy the area, so that the operation is complicated, and the manufacturing cost is high; meanwhile, in the production process of coal gas, when the amount of coal ash is small, the granulation nozzle and the liquid supply unit also work continuously, so that large energy consumption and waste are caused.
The technical problem to be solved by the invention is as follows: the coal gasification device is designed, a plurality of gasification furnaces can be connected, coal ash separated by gas-solid separation devices of the plurality of gasification furnaces is collected uniformly, the floor area and energy consumption of equipment are reduced, and energy conservation and emission reduction are achieved.
Disclosure of Invention
In order to solve the problems, the invention provides a coal gasification device.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a coal gasification device, includes the first gasifier of a plurality of, a plurality of gas-solid separation device, coal ash collection part, coal ash feeder hopper and second gasifier, and a plurality of gas-solid separation device connects respectively in the first gasifier of a plurality of and second gasifier upper portion, and the gas-solid separation device bottom is connected with the return pipe, and the return pipe lower extreme is connected with coal ash collection part, coal ash collection part is connected with the upper portion of coal ash feeder hopper, the side of coal ash feeder hopper is equipped with the inlet pipe of downward sloping, the inlet pipe lower extreme is connected with the second gasifier.
As optimization, the sub-unit connection of first gasifier have coal supply pipe and first air supply pipe, the sub-unit connection of second gasifier has the second air supply pipe, the upper portion of first gasifier is equipped with first blast pipe, and the first blast pipe other end links to each other with gas-solid separator, second gasifier upper portion is equipped with the second blast pipe, the second blast pipe other end links to each other with gas-solid separator.
As optimization, the coal ash collection part include pipe chain conveyer, coal ash conveyer pipe and the collecting hopper that the level set up, pipe chain conveyer is in the adjacent setting of a plurality of first gasification furnace, and the one end that gas-solid separator was kept away from to the returning charge pipe is connected with inside through connection of pipe chain conveyer, the lower part of pipe chain conveyer is equipped with the discharge gate, coal ash conveyer pipe horizontal connection in the discharge gate downside, the coal ash conveyer pipe other end connect in collecting hopper upper portion, the inside screw-feed oar that is equipped with of coal ash conveyer pipe, the wherein one end of screw-feed oar is connected with conveying motor.
As the optimization, the upper portion of coal ash feeder hopper be connected with gas-liquid mixing device, the inside hybrid chamber that is equipped with of gas-liquid mixing device, the upside of hybrid chamber is connected with intake pipe and feed liquor pipe, all be equipped with the solenoid valve on intake pipe and the feed liquor pipe, feed liquor pipe lower extreme is equipped with the shower head, be equipped with high temperature gas-liquid pipe between hybrid chamber and the coal ash feeder hopper, be equipped with solenoid valve and check valve on the high temperature gas-liquid pipe, the check valve sets up the one side of keeping away from the hybrid chamber in the solenoid valve, the hybrid chamber upside is connected with relief valve and pressure sensor, pressure sensor's sense terminal sets up inside the hybrid chamber.
As optimization, the bottom surface of coal ash feeder hopper for the center upwards bellied coniform, the axle center department of coal ash feeder hopper is equipped with the connecting axle, the connecting axle outside evenly is connected with a plurality of stirring vane, stirring vane's upper surface and the inboard top contact of coal ash feeder hopper, stirring vane's bottom surface and the inboard bottom surface contact of coal ash feeder hopper, stirring vane keeps away from the side facade of connecting axle and the inboard facade contact of coal ash feeder hopper, the top that the coal ash feeder hopper was upwards worn out to connecting axle upper end is connected with the motor of unloading, one side that the inlet pipe was kept away from at the top of coal ash feeder hopper is equipped with the connecting pipe, the connecting pipe other end with aggregate bin lower part through connection.
Preferably, the feeding pipe is a flat pipe, the inner bottom surface of the feeding pipe is flush with the inner bottom surface of the coal ash feeding hopper, the width of the feeding pipe is smaller than the maximum distance between every two adjacent stirring blades, and the high-temperature gas-liquid pipe is connected to the upper portion of one side, adjacent to the feeding pipe, of the coal ash feeding hopper.
Preferably, the material returning pipe at the bottom of the gas-solid separation device connected to the second gasification furnace is communicated with the inside of the collecting hopper.
The beneficial effect of this scheme is: a coal gasification apparatus having the following benefits:
the coal ash collecting part is used for efficiently collecting the coal ash generated by the gas-solid separation devices of the first gasification furnaces and simultaneously conveying the coal ash into the collecting hopper, the coal ash feeding hopper is connected between the collecting hopper and the second gasification furnace, the gas-liquid mixing device is connected onto the coal ash feeding hopper, and the formed coal ash particles can be efficiently discharged into the second gasification furnace by discharging the gas-liquid mixture into the coal ash, so that the conversion efficiency of the coal ash is improved, and meanwhile, the coal ash feeding hopper is integrated with the recovered coal ash of a plurality of devices, so that the coal ash is large in quantity, the utilization rate of the gas-liquid mixing device is high, and the energy is saved and the emission is reduced;
set up a plurality of stirring vane in that the coal ash feeder hopper is inside, form relatively independent coal ash storage chamber between two adjacent stirring vane and the coal ash feeder hopper, can realize feeding and unloading respectively in two adjacent coal ash storage chambers to each other do not influence, spout high temperature gas-liquid mixture into storing the chamber through gas-liquid mixing device, it combines with coal ash to form the coal ash granule, can effectively improve the dwell time of coal ash granule in the second gasifier, can effectively prevent simultaneously that the coal ash granule from flowing against the current.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic axial view of a connection structure of a coal ash feed hopper and a second gasification furnace according to the present invention.
FIG. 3 is a schematic front view of a connection structure of a coal ash feed hopper and a second gasification furnace according to the present invention.
FIG. 4 isbase:Sub>A schematic view of the cut-away structure A-A of FIG. 3 according to the present invention.
Fig. 5 is an enlarged view of the portion B of fig. 4 according to the present invention.
FIG. 6 is a back axial view of the connection structure of the coal ash feed hopper and the second gasification furnace.
Fig. 7 is an enlarged schematic view of a portion a of fig. 6 according to the present invention.
FIG. 8 is a schematic axial view of a coal ash feed hopper according to the present invention.
FIG. 9 is a schematic front view of the coal ash feed hopper of the present invention.
FIG. 10 is a schematic view of the sectional structure B-B of FIG. 9 according to the present invention.
FIG. 11 is a schematic view showing a connecting structure of stirring vanes of the present invention.
The system comprises a first gasification furnace 1, a first gasification furnace 2, a gas-solid separation device 3, a coal ash feed hopper 4, a material return pipe 5, a material inlet pipe 6, a second gasification furnace 7, a pipe chain conveyor 8, a coal ash conveying pipe 9, a material collecting hopper 10, a conveying motor 11, a gas-liquid mixing device 12, a gas inlet pipe 13, a liquid inlet pipe 14, an electromagnetic valve 15, a spray header 16, a high-temperature gas-liquid pipe 17, a one-way valve 18, a pressure release valve 19, a pressure sensor 20, a connecting shaft 21, a stirring blade 22, a discharging motor 23 and a connecting pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 8, a coal gasification device comprises a plurality of first gasification furnaces 1, a plurality of gas-solid separation devices 2, a coal ash collection part, a coal ash feed hopper 3 and a second gasification furnace 6, wherein the plurality of gas-solid separation devices 2 are respectively connected to the upper parts of the plurality of first gasification furnaces 1 and the second gasification furnace 6, a return pipe 4 is connected to the bottom of each gas-solid separation device 2, the lower end of the return pipe 4 is connected with the coal ash collection part, the coal ash collection part is connected with the upper part of the coal ash feed hopper 3, a downward-inclined feed pipe 5 is arranged on the side surface of the coal ash feed hopper 3, and the lower end of the feed pipe 5 is connected with the second gasification furnace 6.
As shown in fig. 1, the lower part of the first gasification furnace 1 is connected with a coal supply pipe and a first gas supply pipe, the lower part of the second gasification furnace 6 is connected with a second gas supply pipe, the upper part of the first gasification furnace 1 is provided with a first exhaust pipe, the other end of the first exhaust pipe is connected with the gas-solid separation device 2, the upper part of the second gasification furnace 6 is provided with a second exhaust pipe, and the other end of the second exhaust pipe is connected with the gas-solid separation device 2.
As shown in fig. 1, the coal ash collecting part comprises a pipe chain conveyor 7, a coal ash conveying pipe 8 and a collecting hopper 9 which are horizontally arranged, the pipe chain conveyor 7 is adjacently arranged in a plurality of first gasification furnaces 1, one end, away from the gas-solid separation device 2, of the return pipe 4 is connected with the inside of the pipe chain conveyor 7 in a penetrating manner, a discharge port is arranged on the lower portion of the pipe chain conveyor 7, the coal ash conveying pipe 8 is horizontally connected to the lower side of the discharge port, the other end of the coal ash conveying pipe 8 is connected to the upper portion of the collecting hopper 9, a spiral conveying paddle is arranged inside the coal ash conveying pipe 8, and one end of the spiral conveying paddle is connected with a conveying motor 10.
As shown in fig. 5 and 6, the upper portion of the coal ash feed hopper 3 is connected with a gas-liquid mixing device 11, a mixing chamber is arranged inside the gas-liquid mixing device 11, the upper side of the mixing chamber is connected with a gas inlet pipe 12 and a liquid inlet pipe 13, an electromagnetic valve 14 is arranged on the gas inlet pipe 12 and the liquid inlet pipe 13, a spray head 15 is arranged at the lower end of the liquid inlet pipe 13, a high-temperature gas-liquid pipe 16 is arranged between the mixing chamber and the coal ash feed hopper 3, the high-temperature gas-liquid pipe 16 is provided with the electromagnetic valve 14 and a check valve 17, the check valve 17 is arranged on one side of the electromagnetic valve 14 far away from the mixing chamber, the upper side of the mixing chamber is connected with a pressure relief valve 18 and a pressure sensor 19, and the detection end of the pressure sensor 19 is arranged inside the mixing chamber.
As shown in fig. 1, 4 and 8, the bottom surface of the coal ash feed hopper 3 is in a conical shape with the center protruding upwards, the axis of the coal ash feed hopper 3 is provided with a connecting shaft 20, the outer side of the connecting shaft 20 is uniformly connected with a plurality of stirring blades 21, the upper surfaces of the stirring blades 21 are in contact with the top of the inner side of the coal ash feed hopper 3, the bottom surface of the stirring blade 21 is in contact with the bottom of the inner side of the coal ash feed hopper 3, the side vertical surface of the stirring blade 21 far away from the connecting shaft 20 is in contact with the inner side vertical surface of the coal ash feed hopper 3, the top of the connecting shaft 20 penetrating out of the coal ash feed hopper 3 upwards is connected with an unloading motor 22, one side of the top of the coal ash feed hopper 3 far away from the feed pipe 5 is provided with a connecting pipe 23, and the other end of the connecting pipe 23 is in through connection with the lower part of the aggregate hopper 9.
As shown in fig. 8 and 10, the feeding pipe 5 is a flat pipe, the inner bottom surface of the feeding pipe 5 is flush with the inner bottom surface of the coal ash feeding hopper 3, the width of the feeding pipe 5 is smaller than the maximum distance between two adjacent stirring blades 21, and the high temperature gas-liquid pipe 16 is connected to the upper portion of the adjacent side of the coal ash feeding hopper 3 and the feeding pipe 5.
As shown in fig. 1, the return pipe 4 at the bottom of the gas-solid separation device 2 connected to the second gasification furnace 6 is connected to the inside of the collecting hopper 9.
When the device is used specifically, oxygen is conveyed through a first gas supply pipe of the first gasification furnace, and solid coal is improved into the first gasification furnace 1 through a coal supply pipe;
coal and oxygen react in a first gasification furnace 1 to generate crude coal gas, the crude coal gas is connected with a gas-solid separation device 2 through a first exhaust pipe, and a solid coal ash feeding and returning pipe 4 flows into a pipe chain conveyor 7;
the pipe chain conveyor 7 conveys the coal ash, finally conveys the coal ash into a coal ash conveying pipe 8 in a unified manner, conveys the coal ash through a spiral conveying paddle by the operation of a conveying motor 10, and finally conveys the coal ash into a collecting hopper 9 for temporary storage;
when the coal ash in the aggregate hopper 9 is stored to a certain amount, the coal ash in the aggregate hopper 9 is conveyed to a position between two adjacent stirring blades 21 in the coal ash feed hopper 3 through a connecting pipe 23;
a storage cavity is formed between every two adjacent stirring blades 21, after coal ash is injected, the discharging motor 22 drives the connecting shaft 20 to rotate, so that the storage cavity with the coal ash moves towards the feeding pipe 5, meanwhile, high-temperature gas is injected into the gas-liquid mixing device 11 through the gas inlet pipe 12, boiling water is injected into the gas-liquid mixing device 11 through the liquid inlet pipe 13, and is uniformly sprayed into the gas-liquid mixing device 11 through the spray header 15, and finally is sprayed into the storage cavity through the high-temperature gas-liquid pipe 16 to be in contact with the coal ash;
the high-temperature gas wraps the liquid drops and enters the storage cavity, the high-temperature gas is fully contacted with the coal ash in the storage cavity to form coal ash particles, and the coal ash particles are discharged into the second gasification furnace 6 through the feed pipe 5;
oxygen is supplied into the second gasification furnace 6 through the second gas supply pipe and reacts with the coal ash particles in a contact manner, the utilization efficiency of the coal ash is improved, the reacted gas enters the gas-solid separation device through the second gas exhaust pipe, the gas is converged with the gas generated in the first gasification furnace 1, and the solid returns to the collecting hopper 9.
The electric appliance control system is characterized by further comprising a controller, wherein the position of the controller is set by a worker according to actual conditions during operation, and the controller is used for controlling electric appliances used in the scheme and comprises but is not limited to a sensor, a motor, a telescopic rod, a water pump, a solenoid valve, an electric heating wire, a heat pump, a display screen, computer input equipment, a switch button, communication equipment, a lamp, a loudspeaker and a microphone; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single chip microcomputer, and also comprises a mainboard, a memory bank, a storage medium and a power supply source, wherein the power supply source is a commercial power or a lithium battery; when the display screen is provided, the display card is also provided; for the operation principle of the controller, please refer to "automatic control principle", microcontroller principle and application simulation case ", and" sensor principle and application "published by the university of Qinghua publishers, and other books in the field can be read for reference; other automated control and consumer devices not mentioned are well known to those skilled in the art and will not be described further herein.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any coal gasification device conforming to the claims of the present invention and any suitable changes or modifications thereof by those of ordinary skill in the art shall fall within the protection scope of the present invention.
Claims (7)
1. A coal gasification device is characterized in that: including the first gasifier of a plurality of, a plurality of gas-solid separator, coal ash collection part, coal ash feeder hopper and second gasifier, a plurality of gas-solid separator connects respectively in the first gasifier of a plurality of and second gasifier upper portion, and gas-solid separator bottom is connected with the material return pipe, and the material return pipe lower extreme is connected with coal ash collection part, coal ash collection part is connected with the upper portion of coal ash feeder hopper, the side of coal ash feeder hopper is equipped with the inlet pipe of downward sloping, the inlet pipe lower extreme is connected with the second gasifier.
2. The coal gasification apparatus according to claim 1, wherein: the lower part of first gasifier have confession coal pipe and first air supply pipe, the sub-unit connection of second gasifier has the second air supply pipe, the upper portion of first gasifier is equipped with first blast pipe, the first blast pipe other end links to each other with gas-solid separator, second gasifier upper portion is equipped with the second blast pipe, the second blast pipe other end links to each other with gas-solid separator.
3. The coal gasification apparatus according to claim 2, wherein: the coal ash collecting part comprises a pipe chain conveyor, a coal ash conveying pipe and a collecting hopper which are horizontally arranged, wherein the pipe chain conveyor is arranged adjacent to a plurality of first gasification furnaces, one end, away from the gas-solid separation device, of the return pipe is connected with the inside of the pipe chain conveyor in a through mode, a discharge hole is formed in the lower portion of the pipe chain conveyor, the coal ash conveying pipe is horizontally connected to the lower side of the discharge hole, the other end of the coal ash conveying pipe is connected to the upper portion of the collecting hopper, a spiral conveying paddle is arranged inside the coal ash conveying pipe, and one end of the spiral conveying paddle is connected with a conveying motor.
4. The coal gasification apparatus according to claim 3, wherein: the upper portion of coal ash feeder hopper be connected with gas-liquid mixing device, the inside hybrid chamber that is equipped with of gas-liquid mixing device, the upside of hybrid chamber is connected with intake pipe and feed liquor pipe, all be equipped with the solenoid valve on intake pipe and the feed liquor pipe, feed liquor pipe lower extreme is equipped with the shower head, be equipped with high temperature gas-liquid pipe between hybrid chamber and the coal ash feeder hopper, be equipped with solenoid valve and check valve on the high temperature gas-liquid pipe, the check valve sets up in the one side that the hybrid chamber was kept away from to the solenoid valve, the hybrid chamber upside is connected with relief valve and pressure sensor, pressure sensor's sense terminal sets up inside the hybrid chamber.
5. The coal gasification apparatus according to claim 4, wherein: the bottom surface of coal ash feeder hopper be the bellied coniform that makes progress in center, the axle center department of coal ash feeder hopper is equipped with the connecting axle, the connecting axle outside evenly is connected with a plurality of stirring vane, stirring vane's upper surface and the inboard top contact of coal ash feeder hopper, stirring vane's bottom surface and the inboard bottom surface contact of coal ash feeder hopper, stirring vane keeps away from the side facade of connecting axle and the inboard facade contact of coal ash feeder hopper, the top that upwards wears out the coal ash feeder hopper on the connecting axle is connected with the motor of unloading, one side that the inlet pipe was kept away from at the top of coal ash feeder hopper is equipped with the connecting pipe, the connecting pipe other end with collection hopper lower part through connection.
6. The coal gasification apparatus according to claim 5, wherein: the inlet pipe be the platykurtic pipe, the inboard bottom surface of inlet pipe with the inboard bottom surface of coal ash feeder hopper flushes, the width of inlet pipe is less than the maximum distance between two adjacent stirring vane, high temperature gas-liquid union coupling is in coal ash feeder hopper and the adjacent one side upper portion of inlet pipe.
7. The coal gasification apparatus according to claim 6, wherein: and a material returning pipe at the bottom of the gas-solid separation device connected to the second gasification furnace is communicated with the inside of the material collecting hopper.
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| JPH09178149A (en) * | 1995-12-21 | 1997-07-11 | Chugoku Electric Power Co Inc:The | Coal ash fluidized bed combustion apparatus and powder mixture supply apparatus in coal ash containing non-combusted component reducing apparatus |
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| CN115449401B (en) | 2023-12-26 |
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