CN115449401B - Coal gasification device - Google Patents
Coal gasification device Download PDFInfo
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- CN115449401B CN115449401B CN202211096924.7A CN202211096924A CN115449401B CN 115449401 B CN115449401 B CN 115449401B CN 202211096924 A CN202211096924 A CN 202211096924A CN 115449401 B CN115449401 B CN 115449401B
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- coal ash
- pipe
- gas
- hopper
- coal
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- 238000002309 gasification Methods 0.000 title claims abstract description 41
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000010883 coal ash Substances 0.000 claims abstract description 131
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 238000003860 storage Methods 0.000 description 10
- 239000010881 fly ash Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000011010 flushing procedure 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
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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 gasifiers, a plurality of gas-solid separation devices, a coal ash collecting part, a coal ash feed hopper and a second gasifiers, wherein the plurality of gas-solid separation devices are respectively connected to the upper parts of the plurality of first gasifiers and the plurality of second gasifiers, a return pipe is connected to the bottom of each gas-solid separation device, the lower end of each return pipe is connected with the coal ash collecting part, the coal ash collecting 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 each feed pipe is connected with the second gasifiers. The coal ash generated by the gas-solid separation devices of the first gasification furnaces is efficiently collected through the coal ash collecting part and is 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 recycling coal ash of a plurality of devices is collected in the coal ash feeding hopper, the utilization rate of the gas-liquid mixing device is high, and the 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 gas production process, the raw gas is usually produced in a fluidized bed gasifier by introducing solid coal and oxygen into the gasifier. When the raw 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 the coal ash, the coal ash separated by the gas-solid separation device is often returned to the gasifier again for continuous reaction so as to improve the conversion rate of raw materials. In order to increase the circulation of the coal ash in the return pipe, a mechanical valve is connected to the turning pipe, a blowing gas is externally connected, and the coal ash is blown into the gasifier through the blowing gas. However, since the mechanical valve is subjected to a large flushing force of the fly ash, the mechanical valve is severely worn, so that the operation time of the material returning pipeline is short, the blowing pressure of the blowing gas is not well controlled, if the blowing gas pressure is too small, the fly ash cannot be blown into the fluidized bed gasifier, and if the blowing gas pressure is too large, the high pressure in the fluidized bed gasifier is led to be connected into the gas-solid separation device in series, so that the gas-solid separation device is invalid, and the fly ash cannot return into the gasifier. In addition, since the particle size of the fly ash is small, even if the fly ash is returned to the fluidized-bed gasification furnace, the fly ash is quickly carried out of the gasification furnace by the gas due to the small particle size, 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.
The coal gasification device with the Chinese patent application number of CN201810380824.4 is connected with an atomization granulation nozzle through a liquid supply unit, so that the coal ash separated in the gas-solid separation device is combined with a liquid medium to form coal ash particles, and the recovery and conversion efficiency of the coal ash is improved.
However, in the gas production process in the prior art, a plurality of gasifiers are commonly used for simultaneous production, and each gasifiers are respectively connected with the floor space of the device, so that the operation is complicated and the manufacturing cost is high; meanwhile, in the production process of coal gas, the amount of coal ash is small in time, and a granulating nozzle and a liquid supply unit of the coal gas continuously work, so that larger energy consumption and waste are caused.
The invention aims to solve the technical problems that: the coal gasification device is designed to be capable of connecting a plurality of gasifiers, uniformly collecting coal ash separated by the gas-solid separation devices of the gasifiers, reducing the occupied area and energy consumption of equipment, saving energy and reducing emission.
Disclosure of Invention
In order to solve the problems, the invention provides a coal gasification device.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a coal gasification device, includes a plurality of first gasifier, 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 is connected in a plurality of first gasifier and second gasifier upper portion respectively, and 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 lower part of first gasifier be connected with coal supply pipe and first air supply pipe, the lower part of second gasifier is connected with 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 separation device, and second gasifier upper portion is equipped with the second blast pipe, the second blast pipe other end links to each other with gas-solid separation device.
As the optimization, the coal ash collecting part include the pipe chain conveyer, the coal ash conveyer pipe and the collecting hopper that the level set up, the pipe chain conveyer is adjacent to be set up in a plurality of first gasifier, and the one end that gas-solid separator was kept away from to the return pipe is link up with inside the pipe chain conveyer, the lower part of pipe chain conveyer is equipped with the discharge gate, and the coal ash conveyer pipe level is connected in the discharge gate downside, the coal ash conveyer pipe other end connect in collecting hopper upper portion, the inside screw conveyor that is equipped with of coal ash conveyer pipe, screw conveyor's wherein one end is connected with conveying motor.
As the optimization, the upper portion of coal ash feeder hopper be connected with gas-liquid mixing arrangement, the inside mixing chamber that is equipped with of gas-liquid mixing arrangement, the upside of mixing 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, the feed liquor pipe lower extreme is equipped with the shower head, be equipped with high temperature gas-liquid pipe between mixing 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 solenoid valve one side of keeping away from the mixing chamber, the mixing chamber upside is connected with relief valve and pressure sensor, pressure sensor's detection end sets up in the mixing chamber inside.
As the optimization, the bottom surface of coal ash feeder hopper be the central bellied circular cone form that makes progress, the axle center department of coal ash feeder hopper is equipped with the connecting axle, and 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 elevation contact of connecting axle and the inboard elevation of coal ash feeder hopper, the top that the connecting axle upper end upwards wears out the coal ash feeder hopper is connected with the discharge motor, 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 the collecting hopper lower part link up and is connected.
As the optimization, the inlet pipe be 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 tube connects in the coal ash feeder hopper and the adjacent one side upper portion of inlet pipe.
As optimization, a return pipe at the bottom of the gas-solid separation device connected with 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 produced by the gas-solid separation devices of the first gasification furnaces is efficiently collected through the coal ash collecting part and is simultaneously conveyed to 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 to 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 recovered coal ash of a plurality of devices is collected in the coal ash feeding hopper, wherein the quantity of the coal ash is more, the utilization rate of the gas-liquid mixing device is high, and the energy conservation and emission reduction are realized;
inside a plurality of stirring vane that set up of coal ash feeder hopper, 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 chamber to each other do not influence, spray into high temperature gas-liquid mixture in to the storage chamber through gas-liquid mixing arrangement, it combines to form the coal ash granule with the coal ash, 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 backward.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic axial view of a connecting structure of a coal ash feed hopper and a second gasification furnace.
FIG. 3 is a schematic front view of the connecting structure of the coal ash feed hopper and the second gasifier.
FIG. 4 is a schematic view of the structure of FIG. 3, cut A-A, according to the present invention.
Fig. 5 is an enlarged schematic view of the portion B of fig. 4 according to the present invention.
FIG. 6 is a schematic diagram of the back shaft side of the connection structure of the coal ash feed hopper and the second gasifier according to the present invention.
Fig. 7 is an enlarged schematic view of the portion a of fig. 6 according to the present invention.
FIG. 8 is a schematic diagram of the coal ash feed hopper of the present invention on an axial side.
FIG. 9 is a schematic front view of the coal ash hopper of the present invention.
FIG. 10 is a schematic view of the structure of FIG. 9 in section B-B according to the present invention.
FIG. 11 is a schematic view of the connection structure of the stirring vane of the present invention.
Wherein, 1, a first gasifier, 2, a gas-solid separation device, 3, a coal ash feed hopper, 4, a return pipe, 5, a feed pipe, 6, a second gasifier, 7, a pipe chain conveyor, 8, a coal ash conveying pipe, 9, a collecting hopper, 10, a conveying motor, 11 and a gas-liquid mixing device, 12, an air 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 relief valve, 19, a pressure sensor, 20, a connecting shaft, 21, stirring blades, 22, a discharging motor, 23 and a connecting pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
As shown in fig. 1 and 8, a coal gasification device comprises a plurality of first gasifiers 1, a plurality of gas-solid separation devices 2, a coal ash collecting part, a coal ash feed hopper 3 and a second gasifiers 6, wherein the plurality of gas-solid separation devices 2 are respectively connected to the upper parts of the plurality of first gasifiers 1 and the plurality of second gasifiers 6, a material return pipe 4 is connected to the bottom of the gas-solid separation devices 2, the lower end of the material return pipe 4 is connected with the coal ash collecting part, the coal ash collecting part is connected with the upper part of the coal ash feed hopper 3, a feeding pipe 5 inclining downwards is arranged on the side face of the coal ash feed hopper 3, and the lower end of the feeding pipe 5 is connected with the second gasifiers 6.
As shown in fig. 1, the lower part of the first gasifier 1 is connected with a coal supply pipe and a first air supply pipe, the lower part of the second gasifier 6 is connected with a second air supply pipe, the upper part of the first gasifier 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 gasifier 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 of a return pipe 4, which is far away from a gas-solid separation device 2, is connected with the inside of the pipe chain conveyor 7 in a penetrating manner, a discharge hole is formed in 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 hole, the other end of the coal ash conveying pipe 8 is connected to the upper portion of the collecting hopper 9, a screw conveying propeller is arranged in the coal ash conveying pipe 8, and one end of the screw conveying propeller is connected with a conveying motor 10.
As shown in fig. 5 and 6, the upper part of the coal ash feed hopper 3 is connected with a gas-liquid mixing device 11, a mixing cavity is arranged inside the gas-liquid mixing device 11, the upper side of the mixing cavity is connected with an air inlet pipe 12 and a liquid inlet pipe 13, electromagnetic valves 14 are arranged on the air inlet pipe 12 and the liquid inlet pipe 13, a spray header 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 cavity and the coal ash feed hopper 3, the high-temperature gas-liquid pipe 16 is provided with electromagnetic valves 14 and a one-way valve 17, the one-way valve 17 is arranged on one side of the electromagnetic valve 14 away from the mixing cavity, the upper side of the mixing cavity is connected with a pressure release valve 18 and a pressure sensor 19, and the detection end of the pressure sensor 19 is arranged inside the mixing cavity.
As shown in fig. 1, 4 and 8, the bottom surface of the coal ash feed hopper 3 is conical with the center protruding upwards, the axle center of the coal ash feed hopper 3 is provided with a connecting shaft 20, a plurality of stirring blades 21 are uniformly connected to the outer side of the connecting shaft 20, the upper surface of the stirring blades 21 is in contact with the inner top of the coal ash feed hopper 3, the bottom surface of the stirring blades 21 is in contact with the inner bottom surface of the coal ash feed hopper 3, the side elevation of the stirring blades 21 away from the connecting shaft 20 is in contact with the inner elevation of the coal ash feed hopper 3, the top of the connecting shaft 20 penetrating upwards out of the coal ash feed hopper 3 is connected with a discharging motor 22, one side of the top of the coal ash feed hopper 3 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 collecting 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 part of one side of the coal ash feeding hopper 3 adjacent to the feeding pipe 5.
As shown in fig. 1, a 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 collection hopper 9.
When the device is specifically used, oxygen is conveyed through the first air supply pipe of the first gasification furnace, and solid coal is improved into the first gasification furnace 1 through the coal supply pipe;
the coal and oxygen react in the first gasification furnace 1 to generate raw gas, the raw gas is connected with the gas-solid separation device 2 through a first exhaust pipe, and solid coal ash enters the return pipe 4 and flows into the pipe chain conveyor 7;
the pipe chain conveyor 7 conveys the coal ash, and finally uniformly conveys the coal ash into the coal ash conveying pipe 8, the coal ash is conveyed by a screw conveying propeller through the operation of the conveying motor 10, and finally the coal ash is conveyed into the collecting hopper 9 for temporary storage;
when the coal ash in the collecting hopper 9 is stored to a certain amount, the coal ash in the collecting hopper 9 is conveyed to a position between two adjacent stirring blades 21 in the coal ash feeding hopper 3 through a connecting pipe 23;
a storage cavity is formed between two adjacent stirring blades 21, after coal ash is injected, a discharging motor 22 drives a connecting shaft 20 to rotate, so that the storage cavity with the coal ash moves towards a feeding pipe 5, meanwhile, high-temperature gas is injected into a gas-liquid mixing device 11 through an air inlet pipe 12, boiling water is injected into the gas-liquid mixing device 11 through a liquid inlet pipe 13, the boiling water is uniformly injected into the gas-liquid mixing device 11 through a spray header 15, and finally the boiling water is injected into the storage cavity through a 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, and the high-temperature gas fully contacts 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 provided to the second gasification furnace 6 through the second air supply pipe to contact and react with the coal ash particles, so that the utilization efficiency of the coal ash is improved, the reacted gas enters the gas-solid separation device through the second exhaust pipe, the gas is converged with the gas generated in the first gasification furnace 1, and the solid of the gas returns to the collecting hopper 9.
The scheme also comprises a controller, the position of the controller is set by the working personnel according to the actual situation, and the controller is used for controlling the electric devices used in the scheme, including but not limited to a sensor, a motor, a telescopic rod, a water pump, an electromagnetic valve, an electric heating wire, a heat pump, a display screen, a computer input device, a switch button, a communication device, a lamp, a loudspeaker and a microphone; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a singlechip, and also comprises a main board, a memory bank, a storage medium and a power supply which is matched with the controller for use, wherein the power supply is a commercial power or a lithium battery; when the display screen is provided, a display card is also provided; regarding the operation principle of the controller, please refer to the automatic control principle, the microcontroller principle and the application simulation case, and the sensor principle and application published by the university of Qinghai press, and other books in the field can be read by reference; other non-mentioned automation control and power utilization devices are well known to those skilled in the art and will not be described in detail herein.
The above embodiments are merely specific examples of the present invention, and the scope of the present invention includes, but is not limited to, the product forms and styles of the above embodiments, any suitable changes or modifications made by one of ordinary skill in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.
Claims (4)
1. A coal gasification apparatus, characterized in that: the gasification device comprises a plurality of first gasifiers, a plurality of gas-solid separation devices, a coal ash collecting part, a coal ash feed hopper and a second gasifiers, wherein the plurality of gas-solid separation devices are respectively connected to the upper parts of the plurality of first gasifiers and the second gasifiers, the bottoms of the gas-solid separation devices are connected with a material return pipe, the lower end of the material return pipe is connected with the coal ash collecting part, the coal ash collecting 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 gasifiers;
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 adjacently arranged in a plurality of first gasification furnaces, one end of a return pipe, which is far away from the gas-solid separation device, is in through connection with the inside of the pipe chain conveyor, the lower part of the pipe chain conveyor is provided with a discharge hole, 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 part of the collecting hopper, a screw conveying propeller is arranged in the coal ash conveying pipe, and one end of the screw conveying propeller is connected with a conveying motor;
the upper part of the coal ash feed hopper is connected with a gas-liquid mixing device, a mixing cavity is arranged in the gas-liquid mixing device, the upper side of the mixing cavity is connected with an air inlet pipe and a liquid inlet pipe, electromagnetic valves are arranged on the air inlet pipe and the liquid inlet pipe, a spray header is arranged at the lower end of the liquid inlet pipe, a high-temperature gas-liquid pipe is arranged between the mixing cavity and the coal ash feed hopper, an electromagnetic valve and a one-way valve are arranged on the high-temperature gas-liquid pipe, the one-way valve is arranged on one side of the electromagnetic valve far away from the mixing cavity, a pressure release valve and a pressure sensor are connected to the upper side of the mixing cavity, and the detection end of the pressure sensor is arranged in the mixing cavity;
the bottom surface of coal ash feeder hopper be central bellied circular cone form upwards, the axle center department of coal ash feeder hopper is equipped with the connecting axle, and 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 elevation contact of connecting axle and the inboard elevation of coal ash feeder hopper, the top that the connecting axle upper end upwards worn out the coal ash feeder hopper is connected with the discharge motor, 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 collecting hopper lower part through connection.
2. The coal gasification apparatus according to claim 1, wherein: the lower part of the first gasification furnace is connected with a coal supply pipe and a first air supply pipe, the lower part of the second gasification furnace is connected with a second air supply pipe, the upper part of the first gasification furnace is provided with a first exhaust pipe, the other end of the first exhaust pipe is connected with a gas-solid separation device, the upper part of the second gasification furnace is provided with a second exhaust pipe, and the other end of the second exhaust pipe is connected with the gas-solid separation device.
3. The coal gasification apparatus according to claim 1, wherein: 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 two adjacent stirring blades, and the high-temperature gas-liquid pipe is connected to the upper part of one side of the coal ash feeding hopper adjacent to the feeding pipe.
4. A coal gasification apparatus according to claim 3 wherein: and a return pipe at the bottom of the gas-solid separation device connected with the second gasification furnace is communicated with the inside of the collecting hopper.
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