CN115058263B - Pulverized coal pressurized continuous feeding device and method - Google Patents
Pulverized coal pressurized continuous feeding device and method Download PDFInfo
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- CN115058263B CN115058263B CN202210919918.0A CN202210919918A CN115058263B CN 115058263 B CN115058263 B CN 115058263B CN 202210919918 A CN202210919918 A CN 202210919918A CN 115058263 B CN115058263 B CN 115058263B
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- 239000003245 coal Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 49
- 238000005243 fluidization Methods 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 32
- 238000007599 discharging Methods 0.000 claims description 26
- 239000000654 additive Substances 0.000 claims description 22
- 230000000996 additive effect Effects 0.000 claims description 22
- 238000007664 blowing Methods 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims 1
- 230000005856 abnormality Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B31/00—Charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention discloses a pulverized coal pressurizing continuous feeding device and a method, wherein the feeding device comprises a fluidization feeder, a pollution discharge tank, a pulverized coal flowmeter, a feeding hopper, a lock hopper, a pulverized coal bin, a dust remover, a weighing instrument, a metering tank, a heat tracing unit and a receiving device; the pulverized coal periodically falls into the lock hopper through the pulverized coal bin, periodically falls into the pressurized feed hopper after being pressurized, and is continuously and pneumatically conveyed to the receiving equipment through the static equipment fluidization feeder and the pulverized coal flowmeter in sequence. The arrangement of the pollution discharge tank obviously increases the long-period stable running performance of the device, the configuration of the heat tracing unit and the differential pressure grade air source effectively suppresses the abnormality of the powder bridge, and the arrangement of the weighing instrument and the metering tank lays a foundation for the calibration of the pulverized coal flowmeter and enables the pulverized coal to be recycled; the invention realizes the pressurized continuous feeding of pulverized coal, has good reliability, stability and economy, and has wide market application prospect.
Description
Technical Field
The invention belongs to the coal processing technology, relates to the field of powder pneumatic conveying, and in particular relates to a pulverized coal pressurized continuous feeding device and method.
Background
The pulverized coal prepared under normal pressure is continuously and stably fed into a pressurized conversion device, and the step is a key process of high-efficiency deep processing, conversion and utilization of the pulverized coal. Particularly in the industries of pyrolysis and gasification of coal, the coal is pressurized and converted in a powder form, and the comprehensive utilization efficiency is higher.
At present, the method for feeding dry pulverized coal under pressure mainly comprises a dynamic equipment rotary feeding method and a static equipment pressurized feeding method. The main defects of the rotary feeding method of the movable equipment are as follows: the material stirring function of the material groove is disabled after the powder of the material groove is agglomerated, so that the material guiding and actuating equipment cannot be used for discharging, moreover, the mechanical failure of the moving equipment is easy, the on-line maintenance is difficult, and the energy consumption of the moving equipment is usually not small. Common technical problems encountered by the static equipment pressurized feeding method are as follows: in the pulverized coal pressurizing process, bridging abnormality frequently occurs to cause unsmooth and even interruption of discharging, blockage abnormality of feeding static equipment is easy to occur, and metering deviation of pulverized coal feeding is large. In addition, when powdered coal instantaneously enters high-temperature receiving equipment, the abnormal conditions such as agglomeration and blocking easily occur, and the stable operation of the receiving equipment is further influenced to a great extent. In addition, the pressure release channel of the traditional lock hopper is single, so that the pressure release process is reduced along with the pressure drop of the lock hopper, a large amount of coal dust is pumped away in the early stage, and the pressure release speed in the later stage is too slow, so that the blanking time period is prolonged, and the lock hopper volume is forced to be increased.
Therefore, development of a high-efficiency pulverized coal pressurizing continuous feeding device and method is needed to solve the problems that pulverized coal discharging is unsmooth, feeding static equipment is easy to be blocked, pulverized coal feeding metering deviation is large, pulverized coal at an inlet of a receiving device is easy to agglomerate, locking hopper pressure release efficiency is low and the like.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the pulverized coal pressurized continuous feeding device and method, which realize pressurized continuous feeding of pulverized coal and have good reliability, stability and economy.
The invention adopts the following technical scheme to realize the purposes:
A pulverized coal pressurizing continuous feeding device comprises a fluidization feeder, a pollution discharge tank, a pulverized coal flowmeter, a feeding hopper, a lock hopper, a pulverized coal bin, a dust remover, a weighing instrument, a metering tank and a heat tracing unit;
The bottom of the dust remover is communicated with the top of a coal bunker below the equipment through a powder-related pipeline; the top of the metering tank is communicated with an atmospheric safety point through a pipeline, a tank top back pressure valve is communicated with the pipeline, a support of the metering tank is located on the weighing instrument, the bottom of the metering tank is communicated with the top of a pulverized coal bin below the equipment through a powder-related pipeline, and a bin top valve is communicated with the pipeline;
The top of the pulverized coal bin is communicated with the external pulverized coal through a pipeline; the bottom of the pulverized coal bin is communicated with the top of a lock hopper below the equipment through a powder-related pipeline, and a feed valve is arranged on the pipeline in a communicated manner; the top of the lock hopper is communicated with the middle lower part of the dust remover through a powder-related pipeline, four parallel valve groups are communicated on the pipeline, and the valve groups are respectively a first pressure release valve, a second pressure release valve, a third pressure release valve and a fourth pressure release valve, and the valve bodies of the four valve groups have different diameters; the bottom of the lock hopper is connected with an auxiliary air source through a pipeline, and a pressurizing valve is arranged on the pipeline in a communicated manner; the bottom of the lock hopper is communicated with the top of a feed hopper below the equipment through a powder-related pipeline, and a blanking valve is arranged on the pipeline in a communicated manner;
The three-way piece of the pressure release pipeline at the top of the hopper and the top of the lock hopper is communicated with the powder-related pipeline, and a balance valve is arranged on the powder-related pipeline in a communicated manner, and the three-way piece is used for communicating the powder-related pipeline between the lock hopper and the four parallel valve groups; the bottom of the hopper is communicated with the top of the fluidization feeder below the equipment through a powder-related pipeline;
the bottom of the fluidization feeder is communicated with the top of a blow-down tank below the equipment through a powder-related pipeline, and a blow-down valve is communicated with the pipeline; the lateral pipe orifice of the fluidization feeder is communicated with the inlet of the pulverized coal flowmeter through a conveying pipeline;
the bottom of the blowdown tank is communicated with an atmospheric safety point below the equipment through a powder-related pipeline, and a blowdown valve is communicated with the pipeline; the top of the blowdown tank is communicated with an atmospheric safety point through a pipeline, and a tank top exhaust valve is communicated with the pipeline;
The feeding pipe orifice of the receiving equipment is communicated with the outlet of the pulverized coal flowmeter through a conveying pipeline, and a feeding root valve and a feeding cut-off valve are sequentially communicated in the feeding direction of the pipeline; a special-shaped three-way piece is communicated with the vicinity of an inlet of the feeding root valve, the special-shaped three-way piece is communicated with the top of the metering tank through a material conveying pipeline, and a calibration root valve is communicated and arranged at a position, close to the special-shaped three-way piece, of the pipeline; a tee joint part is communicated with the top of the feeding hopper through a pipeline and a feeding hopper pressure discharge valve is communicated with the pipeline;
The main pipeline of the main air source is communicated and distributed into six branch pipelines which are connected in parallel, wherein: the other end of the first branch pipeline is communicated with a powder-related pipeline at the upper part of the dirt discharging valve, and the first branch pipeline is communicated with a first branch valve; the other end of the second branch pipeline is communicated with a material conveying pipeline at the outlet of the material feeding cut-off valve, and a second branch valve is arranged on the branch pipeline in a communicated manner; the other end of the third branch pipeline is communicated with the fluidization feeder, and a third branch valve is communicated with the branch pipeline; the other end of the fourth branch pipeline is communicated with a conveying pipeline adjacent to the outlet of the fluidization feeder, and a fourth branch valve is communicated with the branch pipeline; the other end of the fifth branch pipeline is communicated with a pipeline of the public purging station, and a fifth branch valve is communicated with the branch pipeline; the other end of the sixth branch pipeline is communicated with the cone part of the metering tank, and a sixth branch valve is communicated with the branch pipeline;
The heat tracing units and the local wall surfaces of all equipment except the receiving equipment in the device are arranged by binding and laying the heat tracing units or the heat tracing pipelines.
Further, the top of the dust remover is communicated with an atmospheric safety point through a pipeline, the mouth of another device at the top of the dust remover is communicated with a back-blowing air source through a pipeline, and a back-blowing valve is arranged on the pipeline in a communicated manner; and a fourth branch pipeline of the fourth branch valve outlet is connected with an additive adding pipeline, and an additive valve is arranged on the additive adding pipeline in a communicating way.
Furthermore, the included angle between all powder-related pipelines which are mutually communicated among the dust remover, the metering tank, the pulverized coal bin, the lock hopper, the feeding hopper, the fluidization feeder and the pollution discharge tank and the horizontal plane is not smaller than 30 degrees, and the fluidization feeder is static equipment without moving parts.
Furthermore, all material conveying pipelines and matched elbows and tee joint parts which are mutually communicated among the fluidization feeder, the metering tank and the material receiving equipment adopt anti-wear treatment measures, and the specific measures include, but are not limited to, coating wear-resistant materials on the inner wall, increasing the wall thickness and designing special wear-resistant structures.
Further, the first branch valve, the second branch valve, the third branch valve, the fourth branch valve, the fifth branch valve, the first relief valve, the sixth branch valve, the back flushing valve, the second relief valve, the third relief valve, the fourth relief valve, the balance valve, the pressurizing valve, the additive valve, the blow-down valve, the dirt discharging valve, the tank top exhaust valve, the blanking valve, the feeding valve, the tank top back pressure valve, the calibration root valve, the hopper discharging valve, the feeding cut-off valve and the feeding root valve are all remote automatic control valves, and the valve types can be selected from but are not limited to ball valves, gate valves, disc valves, shearing valves, stop valves, gate valves and needle valves.
Further, the valve body diameters of the first pressure relief valve, the second pressure relief valve, the third pressure relief valve and the fourth pressure relief valve are arranged from small to large, namely, the valve body diameter of the first pressure relief valve is the smallest.
A pulverized coal pressurized continuous feeding method, comprising the steps of:
Step 1: closing all valves in the device, starting a heat tracing unit, and introducing the prepared extra-boundary pulverized coal into a pulverized coal bin in a pneumatic conveying or gravity flow mode; opening a back-flushing valve to supply back-flushing air for a downstream self-control period; and opening a fifth branch valve, and feeding a small amount of purge gas into pressure-guiding pipe ports and powder bridging parts in the device by controlling the branch valves in the downstream public purge station.
Step 2: and opening a fourth branch valve and a calibration root valve, and regulating and controlling the pressure in the hopper and the metering tank to a specified value by regulating the opening of the tank top back pressure valve.
Step 3: opening a first pressure release valve, opening a second pressure release valve after the pressure of the lock hopper is reduced to be lower than a second set value, opening a third pressure release valve after the pressure of the lock hopper is reduced to be lower than a third set value, opening a fourth pressure release valve after the pressure of the lock hopper is reduced to be lower than a fourth set value, opening a feed valve after the pressure of the lock hopper is reduced to be a feed trigger set value, closing the feed valve, the first pressure release valve, the second pressure release valve, the third pressure release valve and the fourth pressure release valve after the material level value of the lock hopper reaches a high report set value, opening a pressurizing valve, closing the pressurizing valve and opening the first pressure release valve after the pressure of the lock hopper is increased to be higher than the feed hopper pressure and the differential pressure value reaches a fifth set value, closing the first pressure release valve and opening a blanking valve after the differential pressure value is reduced to be lower than the sixth set value, opening a balance valve after the blanking valve is opened for 5-10 seconds, and closing the balance valve and the blanking valve after the material level value of the lock hopper is reduced to be a low report set value. And after the material level value of the feeding hopper is reduced to the feeding set value, sequentially repeating all the actions in the step.
Step 4: and adjusting the opening degree of the third branch valve to change the conveying quantity, and setting the related calibration parameters of the pulverized coal flowmeter by referring to the weight increasing speed of the weighing instrument. And after the calibration is finished, sequentially closing a third branch valve, a calibration root valve and a fourth branch valve, fully opening a tank top back pressure valve, opening a tank top valve for discharging after the pressure value of the metering tank is reduced below a specified value, and adjusting the discharging rate through the opening of the sixth branch valve.
Step 5: after the receiving equipment is provided with a feeding condition, a second branch valve, a feeding cut-off valve and a fourth branch valve are sequentially opened, after the pressure of a hopper is higher than the pressure value at the feeding hole of the receiving equipment, a feeding root valve and an additive valve are opened, the feeding rate of pulverized coal is regulated and controlled by combining the opening adjustment of the third branch valve with the pulverized coal flowmeter, and after the pulverized coal flowmeter has a feeding reading, the second branch valve is closed.
Step 6: and after the pressure of the blow-down tank is lower than a certain specific value, opening a sewage discharging valve, and after the discharge of the blow-down tank is finished, sequentially closing the sewage discharging valve and the tank top exhaust valve. When the hopper pressure is abnormally high, the hopper discharge pressure valve is opened to moderately release pressure, and then the valve is closed.
Step 7: and after receiving a feeding stopping instruction, sequentially opening a second branch valve, closing a feeding cut-off valve, an additive valve, a third branch valve, a fourth branch valve and a feeding root valve.
Further, the normal operating pressure of the fluidization feeder is within the range of 0.1 MPaG-10 MPaG, and the operating temperature is within the range of 1 ℃ to 300 ℃.
Further, the water content of the external pulverized coal is not more than 5 percent, and the mass ratio of the powder with the grain diameter of more than 800 mu m in the external pulverized coal is not more than 2 percent; the medium of the additive is one or a mixture of a plurality of carbon monoxide, hydrogen, methane, air and oxygen.
Further, the medium of the main air source, the back-blowing air source and the auxiliary air source is one or a mixture of a plurality of nitrogen, oxygen-deficient air and carbon dioxide, and the volume fraction of oxygen molecules in the medium is not higher than 9%; the primary air source pressure value is lower than the secondary air source pressure value but higher than the blowback air source pressure value.
Compared with the prior art, the invention has the following beneficial effects:
The method for arranging the parallel pressure relief valve groups and opening the parallel pressure relief valve groups in batches in stages effectively improves the pressure relief efficiency, shortens the blanking time of the lock hopper, and provides possibility for the relative reduction design of the volume of the lock hopper equipment; the heat tracing unit is arranged to effectively prevent the abnormality of coal dust caking and bridging caused by the precipitation of the steam dew point on the inner wall surface of the equipment; the arrangement of the public purging station effectively eliminates part of blocking parts which are easy to bridge; the auxiliary air source adopts a higher pressure level and a corresponding pressurizing method, so that the probability of bridging of powder in the lock hopper is effectively reduced, and the smooth discharging of the lock hopper is ensured; the provided fluidization feeder establishes a positive correlation between the feeding rate and the gas transmission quantity of the key part of the equipment, and realizes flexible regulation and control of the static equipment on the feeding rate of pulverized coal; the arrangement of the blowdown tank solves the problem of periodic on-line discharge of unfriendly solid garbage in the system, and ensures long-period stable operation of the fluidization feeder; the pulverized coal flowmeter, the weighing instrument and the metering tank solve the problems of pressure calibration and metering of the pulverized coal feeding rate, and pulverized coal used in the process can be recycled in the system.
The pulverized coal periodically falls into a lock hopper through a pulverized coal bin, periodically falls into a pressurized feed hopper after being pressurized, and is continuously and pneumatically conveyed to a receiving device through a static device fluidization feeder and a pulverized coal flowmeter in sequence; the invention realizes the pressurized continuous feeding of pulverized coal, has good reliability, stability and economy, and has wide market application prospect.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
Wherein: 1. a main air source; 2. a first branch valve; 3. a second branch valve; 4. a third branch valve; 5. a fourth branch valve; 6. a fifth branch valve; 7. a first pressure release valve; 8. a sixth branch valve; 9. a blowback valve; 10. an atmospheric safety point location; 11. a back-blowing air source; 13. outside pulverized coal; 14. a second pressure release valve; 15. a third pressure release valve; 16. a fourth pressure release valve; 17. a balancing valve; 18. an auxiliary air source; 19. a pressurizing valve; 20. an additive valve; 21. an additive; 22. a fluidization feeder; 23. a blow-down valve; 24. a dirt discharging valve; 25. a blow-down tank; 26. a tank top exhaust valve; 27. a pulverized coal flow meter; 28. a hopper; 30. a blanking valve; 31. locking a bucket; 32. a feed valve; 33. a coal dust bin; 34. a top valve; 35. a dust remover; 36. a weighing instrument; 37. a metering tank; 38. a tank top back pressure valve; 39. a heat tracing unit; 40. calibrating a root valve; 41. a hopper discharge pressure valve; 42. a feed cut-off valve; 43. a feed root valve; 44. and receiving equipment.
Detailed Description
The invention is further illustrated below in conjunction with specific examples.
As shown in FIG. 1, the device of the invention comprises a main air source 1, a back-blowing air source 11, an external pulverized coal 13, an auxiliary air source 18, an additive 21, a fluidization feeder 22, a blowdown tank 25, a pulverized coal flowmeter 27, a feed hopper 28, a lock hopper 31, a pulverized coal bin 33, a dust remover 35, a weighing instrument 36, a metering tank 37, a heat tracing unit 39 and a receiving device 44.
The top of the dust remover 35 is communicated with the atmospheric safety point 10 through a pipeline. The other equipment orifice at the top of the dust remover 35 is communicated with the back-blowing air source 11 through a pipeline, and a back-blowing valve 9 is arranged on the pipeline in a communicated manner. The bottom of the dust remover 35 is communicated with the top of the pulverized coal bin 33 below the equipment through a powder-related pipeline;
The top of the metering tank 37 is communicated with the atmospheric safety point 10 through a pipeline, and a tank top back pressure valve 38 is communicated and arranged on the pipeline. The support of the metering tank 37 sits above the weighing cell 36. The bottom of the metering tank 37 is communicated with the top of the pulverized coal bin 33 below the equipment through a powder-related pipeline, and a bin top valve 34 is arranged on the pipeline in a communicated manner;
The top of the pulverized coal bin 33 is communicated with the external pulverized coal 13 through a pipeline. The bottom of the pulverized coal bin 33 is communicated with the top of the lock hopper 31 below the equipment through a powder-related pipeline, and a feed valve 32 is arranged on the pipeline in a communicated manner;
The top of the lock hopper 31 is communicated with the middle lower part of the dust remover 35 through a powder-related pipeline, and four parallel valve groups are communicated on the pipeline, namely a first pressure release valve 7, a second pressure release valve 14, a third pressure release valve 15 and a fourth pressure release valve 16. The bottom of the lock hopper 31 is connected with the auxiliary air source 18 through a pipeline, and a pressurizing valve 19 is arranged on the pipeline in a communicating manner. The bottom of the lock hopper 31 is communicated with the top of the hopper 28 below the equipment through a powder-related pipeline, and a blanking valve 30 is arranged on the pipeline in a communicated manner;
The three-way piece of the pressure release pipeline at the top of the hopper 28 and the top of the lock hopper 31 is communicated with the powder-related pipeline, the powder-related pipeline is communicated with the balance valve 17, and the three-way piece is used for communicating the lock hopper 31 with the powder-related pipeline between the four parallel valve groups. The bottom of the hopper 28 is communicated with the top of the fluidization feeder 22 below the device through a powder-related pipeline;
the bottom of the fluidization feeder 22 is communicated with the top of a blow-down tank 25 below the equipment through a powder-related pipeline, and a blow-down valve 23 is arranged on the pipeline in a communicated manner. The lateral orifice of the fluidization feeder 22 is communicated with the inlet of the pulverized coal flowmeter 27 through a conveying pipeline;
the bottom of the blowdown tank 25 is communicated with the atmospheric safety point 10 below the equipment through a powder-related pipeline, and a sewage discharge valve 24 is arranged on the pipeline in a communicated mode. The top of the blowdown tank 25 is communicated with the atmospheric safety point 10 through a pipeline, and a tank top exhaust valve 26 is arranged on the pipeline in a communicated manner;
The feed pipe orifice of the receiving device 44 is communicated with the outlet of the pulverized coal flow meter 27 through a feed pipe, and a feed root valve 43 and a feed cut-off valve 42 are sequentially communicated in the feeding direction of the pipe. A special-shaped three-way piece is communicated near the inlet of the feeding root valve 43, the special-shaped three-way piece is communicated with the top of the metering tank 37 through a material conveying pipeline, and a calibration root valve 40 is communicated at the position, close to the special-shaped three-way piece, of the pipeline. A three-way member is provided in communication near the inlet of the feed shutoff valve 42, the three-way member is in communication with the top of the hopper 28 through a pipe, and a hopper discharge pressure valve 41 is provided in communication on the pipe;
The main pipeline of the main air source 1 is communicated and distributed into six branch pipelines connected in parallel, wherein: the other end of the first branch pipeline is communicated with a powder-related pipeline at the upper part of the dirt discharging valve 24, and a first branch valve 2 is communicated with the branch pipeline; the other end of the second branch pipeline is communicated with a material conveying pipeline at the outlet of the material feeding cut-off valve 42, and a second branch valve 3 is arranged on the branch pipeline in a communicated manner; the other end of the third branch pipeline is communicated with the fluidization feeder 22, and a third branch valve 4 is arranged on the branch pipeline in a communicating way; the other end of the fourth branch pipeline is communicated with a conveying pipeline adjacent to the outlet of the fluidization feeder 22, and a fourth branch valve 5 is arranged on the branch pipeline in a communicated manner; the other end of the fifth branch pipeline is communicated with a pipeline of the public purging station, and a fifth branch valve 6 is arranged on the branch pipeline in a communicated manner; the other end of the sixth branch pipe is communicated with the cone part of the metering tank 37, and a sixth branch valve 8 is communicated with the branch pipe;
The additive 21 is communicated with a fourth branch pipeline of the outlet of the fourth branch valve 5 through a pipeline, and an additive valve 20 is arranged on the pipeline in a communicated manner;
The heat tracing unit 39 is arranged on the wall surface of a local part of all equipment except the receiving equipment 44 in the device in a binding way through heat tracing wires or heat tracing pipelines.
All powder-related pipelines communicated with each other among the dust remover 35, the metering tank 37, the pulverized coal bin 33, the lock hopper 31, the feeding hopper 28, the fluidization feeder 22 and the pollution discharge tank 25 have included angles of not less than 30 degrees with the horizontal plane, and the fluidization feeder 22 is a static device without moving parts.
All material conveying pipelines and matched elbows and tee parts which are mutually communicated among the fluidization feeder 22, the metering tank 37 and the material receiving equipment 44 adopt anti-wear treatment measures, and the specific measures include, but are not limited to, coating wear-resistant materials on the inner wall, increasing the wall thickness and designing special wear-resistant structures.
The first branch valve 2, the second branch valve 3, the third branch valve 4, the fourth branch valve 5, the fifth branch valve 6, the first relief valve 7, the sixth branch valve 8, the blowback valve 9, the second relief valve 14, the third relief valve 15, the fourth relief valve 16, the balance valve 17, the pressure charging valve 19, the additive valve 20, the blow-off valve 23, the dirt discharging valve 24, the tank top exhaust valve 26, the blanking valve 30, the feeding valve 32, the top valve 34, the tank top back pressure valve 38, the calibration root valve 40, the feeding hopper pressure discharging valve 41, the feeding cut-off valve 42 and the feeding root valve 43 are all remote automatic control valves, and the valve types can be selected from but are not limited to ball valves, gate valves, disc valves, shearing valves, stop valves, gate valves and needle valves.
The medium of the main air source 1, the back-blowing air source 11 and the auxiliary air source 18 is one or a mixture of a plurality of nitrogen, oxygen-deficient air and carbon dioxide, and the volume fraction of oxygen molecules in the medium is not higher than 9%; the main air source 1 pressure is lower than the auxiliary air source 18 pressure, but higher than the blowback air source 11 pressure.
The water content of the outside-limit pulverized coal 13 is not more than 5 percent, and the mass ratio of the powder with the grain diameter of more than 800 mu m in the outside-limit pulverized coal 13 is not more than 2 percent; the medium of the additive 21 is one or a mixture of a plurality of carbon monoxide, hydrogen, methane, air and oxygen.
The valve body diameters of the first pressure relief valve 7, the second pressure relief valve 14, the third pressure relief valve 15 and the fourth pressure relief valve 16 are arranged from small to large, namely, the valve body diameter of the first pressure relief valve 7 is the smallest.
The normal operating pressure of the fluidization feeder 22 is within the range of 0.1 MPaG to 10 MPaG, and the operating temperature is within the range of 1 ℃ to 300 ℃.
The control method of the present invention is as follows,
Step 1: closing all valves in the device, starting a heat tracing unit 39, and introducing the prepared extra-boundary pulverized coal 13 into a pulverized coal bin 33 by means of pneumatic conveying or gravity flow; opening a blowback valve 9 to supply air for blowback in a downstream self-control period; and opening a fifth branch valve 6, and feeding a small amount of purge gas into the pressure-guiding pipe ports and the powder bridging parts in the device by controlling the branch valves in the downstream public purge station.
Step2: the fourth branch valve 5 and the calibration root valve 40 are opened, and the pressure in the hopper 28 and the metering tank 37 is regulated and controlled to a specified value by adjusting the opening degree of the tank top back pressure valve 38.
Step 3: the first pressure relief valve 7 is opened, the second pressure relief valve 14 is opened after the pressure of the lock hopper 31 is reduced to be lower than a second set value, the third pressure relief valve 15 is opened after the pressure of the lock hopper 31 is reduced to be lower than a third set value, the fourth pressure relief valve 16 is opened after the pressure of the lock hopper 31 is reduced to be lower than a fourth set value, the feed valve 32 is opened after the pressure of the lock hopper 31 is reduced to be a feed trigger set value, the feed valve 32, the first pressure relief valve 7, the second pressure relief valve 14, the third pressure relief valve 15, the fourth pressure relief valve 16 and the charging valve 19 are closed after the material level value of the lock hopper 31 reaches a high report set value, the charging valve 19 is closed after the pressure of the lock hopper 31 is increased to be higher than the pressure of the feed hopper 28 and the differential pressure value reaches a fifth set value, the first pressure relief valve 7 is opened, the first pressure relief valve 7 is closed after the differential value is reduced to be a sixth set value, the feed valve 30 is opened for 5 to 10 seconds, the balance valve 17 is opened, and the balance valve 17 and the feed valve 30 is closed after the material level value of the lock hopper 31 is reduced to be a low set value. After the level of hopper 28 has fallen to the feed set point, all of the above steps are repeated in sequence.
Step 4: adjusting the opening of the third branch valve 4 changes the delivery amount and sets the associated calibration parameters of the pulverized coal flow meter 27 with reference to the rate of weight increase of the load cell 36. And after the calibration is finished, the third branch valve 4, the calibration root valve 40 and the fourth branch valve 5 are sequentially closed, the tank top back pressure valve 38 is fully opened, the tank top valve 34 is opened for discharging after the pressure value of the metering tank 37 is reduced below a specified value, and the discharging rate is adjusted through the opening of the sixth branch valve 8.
Step 5: after the receiving equipment 44 is provided with feeding conditions, the second branch valve 3, the feeding cut-off valve 42 and the fourth branch valve 5 are sequentially opened, after the pressure of the hopper 28 is higher than the pressure value at the feeding port of the receiving equipment 44, the feeding root valve 43 and the additive valve 20 are opened, the pulverized coal feeding rate is regulated and controlled by combining the opening adjustment of the third branch valve 4 with the pulverized coal flowmeter 27, and after the pulverized coal flowmeter 27 has feeding readings, the second branch valve 3 is closed.
Step 6: after the fluidization feeder 22 operates for a certain period of time, the first branch valve 2 is opened, after the pressure of the blow-down tank 25 is higher than the pressure of the hopper 28 by a certain value, the first branch valve 2 is closed, the blow-down valve 23 is opened, after the specific period of time is reached, the tank top exhaust valve 26 is opened, after the pressure of the blow-down tank 25 is lower than a certain value, the sewage discharging valve 24 is opened, and after the discharge of the blow-down tank 25 is completed, the sewage discharging valve 24 and the tank top exhaust valve 26 are sequentially closed. When the pressure of the hopper 28 is abnormally high, the hopper discharge pressure valve 41 is opened to moderately release pressure, and then the valve is closed.
Step 7: after receiving the feeding stop command, the second branch valve 3, the feeding cut-off valve 42, the additive valve 20, the third branch valve 4, the fourth branch valve 5, and the feeding root valve 43 are sequentially opened.
The above-described embodiments are provided for better illustrating the structural principles of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit of the present invention may be made without departing from the scope of the present invention as defined in the appended claims.
Claims (10)
1. The utility model provides a continuous feed arrangement of fine coal pressurization which characterized in that: comprises a fluidization feeder (22), a pollution discharge tank (25), a pulverized coal flowmeter (27), a feeding hopper (28), a lock hopper (31), a pulverized coal bin (33), a dust remover (35), a weighing instrument (36), a metering tank (37) and a heat tracing unit (39);
The bottom of the dust remover (35) is communicated with the top of a dust coal bin (33) below the dust remover (35) through a dust-related pipeline; the top of the metering tank (37) is communicated with the atmospheric safety point (10) through a pipeline, a tank top back pressure valve (38) is arranged on the pipeline in a communicated manner, a support seat of the metering tank (37) is located on the weighing instrument (36), the bottom of the metering tank (37) is communicated with the top of a pulverized coal bin (33) below the metering tank (37) through a powder-related pipeline, and a bin top valve (34) is arranged on the pipeline in a communicated manner;
The top of the pulverized coal bin (33) is communicated with the external pulverized coal (13) through a pipeline; the bottom of the pulverized coal bin (33) is communicated with the top of a lock hopper (31) below the pulverized coal bin (33) through a powder-related pipeline, and a feed valve (32) is arranged on the pipeline in a communicated manner; the top of the lock hopper (31) is communicated with the middle lower part of the dust remover (35) through a powder-related pipeline, four parallel valve groups are communicated on the pipeline, namely a first pressure release valve (7), a second pressure release valve (14), a third pressure release valve (15) and a fourth pressure release valve (16), and the diameters of valve bodies of the four valve groups are different; the bottom of the lock hopper (31) is connected with an auxiliary air source (18) through a pipeline, and a pressurizing valve (19) is arranged on the pipeline in a communicating way; the bottom of the lock hopper (31) is communicated with the top of the feed hopper (28) below the lock hopper (31) through a powder-related pipeline, and a blanking valve (30) is arranged on the pipeline in a communicated manner;
The three-way piece of the pressure release pipeline at the top of the hopper (28) and the top of the lock hopper (31) is communicated with each other through a powder-related pipeline, a balance valve (17) is arranged on the powder-related pipeline in a communicated manner, and the three-way piece is used for communicating the lock hopper (31) with the powder-related pipeline between the four parallel valve groups; the bottom of the hopper (28) is communicated with the top of the fluidization feeder (22) below the hopper (28) through a powder-related pipeline;
The bottom of the fluidization feeder (22) is communicated with the top of a blowdown tank (25) below the fluidization feeder (22) through a powder-related pipeline, and a blowdown valve (23) is arranged on the pipeline in a communicated manner; the lateral pipe orifice of the fluidization feeder (22) is communicated with the inlet of the pulverized coal flowmeter (27) through a conveying pipeline;
the bottom of the blowdown tank (25) is communicated with an atmospheric safety point position (10) below the blowdown tank (25) through a powder-related pipeline, and a blowdown valve (24) is arranged on the pipeline in a communicated manner; the top of the blowdown tank (25) is communicated with an atmospheric safety point (10) through a pipeline, and a tank top exhaust valve (26) is arranged on the pipeline in a communicated manner;
The feed pipe orifice of the receiving equipment (44) is communicated with the outlet of the pulverized coal flowmeter (27) through a feed pipeline, and a feed root valve (43) and a feed cut-off valve (42) are sequentially communicated in the feeding direction of the pipeline; a special-shaped three-way piece is communicated and arranged near the inlet of the feeding root valve (43), the special-shaped three-way piece is communicated with the top of the metering tank (37) through a conveying pipeline, and a calibration root valve (40) is communicated and arranged near the special-shaped three-way piece of the pipeline; a three-way piece is communicated and arranged near the inlet of the feeding cut-off valve (42), the three-way piece is communicated with the top of the feed hopper (28) through a pipeline, and a feed hopper pressure discharge valve (41) is communicated and arranged on the pipeline;
The main pipeline of the main air source (1) is communicated and distributed into six branch pipelines which are connected in parallel, wherein: the other end of the first branch pipeline is communicated with a powder-related pipeline at the upper part of the dirt discharging valve (24), and the first branch pipeline is communicated with a first branch valve (2); the other end of the second branch pipeline is communicated with a material conveying pipeline at the outlet of the material feeding cut-off valve (42), and a second branch valve (3) is arranged on the branch pipeline in a communicated manner; the other end of the third branch pipeline is communicated with a fluidization feeder (22), and a third branch valve (4) is arranged on the branch pipeline in a communicated manner; the other end of the fourth branch pipeline is communicated with a conveying pipeline close to the outlet of the fluidization feeder (22), and a fourth branch valve (5) is arranged on the branch pipeline in a communicated manner; the other end of the fifth branch pipeline is communicated with a pipeline of the public purging station, and a fifth branch valve (6) is arranged on the branch pipeline in a communicated manner; the other end of the sixth branch pipeline is communicated with the cone part of the metering tank (37), and a sixth branch valve (8) is communicated with the branch pipeline;
The heat tracing unit (39) and the local wall surfaces of all equipment except the receiving equipment (44) in the device are arranged by binding and laying the heat tracing units or the heat tracing pipelines.
2. The pulverized coal pressurized continuous feeding apparatus as set forth in claim 1, wherein: the top of the dust remover (35) is communicated with an atmospheric safety point (10) through a pipeline, the other equipment pipe orifice at the top of the dust remover (35) is communicated with a back-blowing air source (11) through a pipeline, and a back-blowing valve (9) is arranged on the pipeline in a communicated manner; and a fourth branch pipeline at the outlet of the fourth branch valve (5) is connected with an additive (21) adding pipeline, and an additive valve (20) is arranged on the adding pipeline in a communicating way.
3. The pulverized coal pressurized continuous feeding apparatus as set forth in claim 2, wherein: all powder-related pipelines communicated with each other among the dust remover (35), the metering tank (37), the pulverized coal bin (33), the lock hopper (31), the feeding hopper (28), the fluidization feeder (22) and the pollution discharge tank (25) form an included angle of not less than 30 degrees with the horizontal plane, and the fluidization feeder (22) is static equipment without moving parts.
4. A pulverized coal pressurized continuous feed apparatus as claimed in any one of claims 1 to 3, wherein: all material conveying pipelines and matched elbows and tee parts which are mutually communicated among the fluidization feeder (22), the metering tank (37) and the material receiving equipment (44) adopt anti-wear treatment measures, and the specific measures comprise coating wear-resistant materials on the inner wall and increasing the wall thickness.
5. The pulverized coal pressurized continuous feeding apparatus as set forth in claim 4, wherein: the automatic control device is characterized in that the first branch valve (2), the second branch valve (3), the third branch valve (4), the fourth branch valve (5), the fifth branch valve (6), the first relief valve (7), the sixth branch valve (8), the back flushing valve (9), the second relief valve (14), the third relief valve (15), the fourth relief valve (16), the balance valve (17), the pressurizing valve (19), the additive valve (20), the blowdown valve (23), the dirt discharging valve (24), the tank top exhaust valve (26), the blanking valve (30), the feeding valve (32), the bin top valve (34), the tank top back pressure valve (38), the calibration root valve (40), the feeding hopper pressure discharging valve (41), the feeding cut-off valve (42) and the feeding root valve (43) are remote automatic control valves, and the valve types are ball valves, gate valves, disc valves, shearing valves, cut-off valves, gate valves and needle valves.
6. The pulverized coal pressurized continuous feeding apparatus as set forth in claim 4, wherein: the valve body diameters of the first pressure relief valve (7), the second pressure relief valve (14), the third pressure relief valve (15) and the fourth pressure relief valve (16) are arranged from small to large, namely, the valve body diameter of the first pressure relief valve (7) is the smallest.
7. A pulverized coal pressurized continuous feeding method based on the apparatus of claim 6, characterized by comprising the steps of:
Step 1: closing all valves in the device, starting a heat tracing unit (39), and introducing the prepared extra-boundary pulverized coal (13) into a pulverized coal bin (33) in a pneumatic conveying or gravity flow mode; opening a back-flushing valve (9) to supply back-flushing air for a downstream self-control period; opening a fifth branch valve (6) and feeding a small amount of purge gas into the pressure guide pipe ports and the powder bridging parts in the device by controlling the branch valves in the downstream public purge station;
step 2: opening a fourth branch valve (5) and a calibration root valve (40), and regulating and controlling the pressure in the hopper (28) and the metering tank (37) to a specified value by regulating the opening of a tank top back pressure valve (38);
Step 3: opening a first pressure relief valve (7), opening a second pressure relief valve (14) after the pressure of a lock hopper (31) is reduced to be lower than a second set value, opening a third pressure relief valve (15) after the pressure of the lock hopper (31) is reduced to be lower than a third set value, opening a fourth pressure relief valve (16) after the pressure of the lock hopper (31) is reduced to be lower than a fourth set value, opening a feed valve (32) after the pressure of the lock hopper (31) is reduced to a feed trigger set value, closing the feed valve (32), opening the first pressure relief valve (7), the second pressure relief valve (14), the third pressure relief valve (15) and the fourth pressure relief valve (16) after the material level value of the lock hopper (31) reaches a high report set value, opening a charging valve (19), closing the charging valve (19) and opening the first pressure relief valve (7) after the pressure of the lock hopper (31) is increased to be higher than the pressure of a hopper (28) and the pressure difference value reaches a fifth set value, closing the first pressure relief valve (7) and opening a blanking valve (30) after the pressure difference value is reduced to the sixth set value, opening the material level valve (30) to be 5-10, and opening the material level valve (17) to be balanced after the material level value is reduced to be lower than the set value (17); after the material level value of the feeding hopper (28) is reduced to the material supplementing set value, sequentially repeating all the actions in the step;
step 4: adjusting the opening degree of the third branch valve (4) to change the conveying quantity, and setting the related calibration parameters of the pulverized coal flowmeter (27) by referring to the weight increasing speed of the weighing instrument (36); after the calibration is finished, sequentially closing a third branch valve (4), a calibration root valve (40) and a fourth branch valve (5) and fully opening a tank top back pressure valve (38), opening a tank top valve (34) for discharging after the pressure value of a metering tank (37) is reduced below a specified value, and adjusting the discharging rate through the opening of a sixth branch valve (8);
Step 5: after the receiving equipment (44) is provided with feeding conditions, sequentially opening a second branch valve (3), a feeding cut-off valve (42) and a fourth branch valve (5), after the pressure of a hopper (28) is higher than the pressure value at the feeding port of the receiving equipment (44), opening a feeding root valve (43) and an additive valve (20), regulating and controlling the feeding rate of pulverized coal by combining the opening adjustment of a third branch valve (4) with a pulverized coal flowmeter (27), and after the pulverized coal flowmeter (27) has feeding readings, closing the second branch valve (3);
Step 6: opening a first branch valve (2) after a fluidization feeder (22) operates for a certain period of time, closing the first branch valve (2) and opening a drain valve (23) after the pressure of a drain tank (25) is higher than the pressure of a hopper (28) by a certain value, sequentially closing the drain valve (23) and opening a tank top exhaust valve (26) after the drain is performed for a certain period of time, opening a sewage discharging valve (24) after the pressure of the drain tank (25) is lower than a certain value, and sequentially closing the sewage discharging valve (24) and the tank top exhaust valve (26) after the drain of the drain tank (25) is completed; when the pressure of the hopper (28) is abnormally high, a hopper pressure discharge valve (41) is opened, and the valve is closed after the pressure is moderately released;
step 7: after receiving the feeding stopping instruction, the second branch valve (3), the feeding cut-off valve (42), the additive valve (20), the third branch valve (4), the fourth branch valve (5) and the feeding root valve (43) are sequentially opened.
8. The pulverized coal pressurized continuous feed method as set forth in claim 7, wherein: the normal operating pressure of the fluidization feeder (22) is within the range of 0.1 MPaG-10 MPaG, and the operating temperature is within the range of 1-300 ℃.
9. The pulverized coal pressurized continuous feeding method according to claim 7, characterized in that: the water content of the external pulverized coal (13) is not more than 5 percent, and the mass ratio of the powder with the grain diameter of more than 800 mu m in the external pulverized coal (13) is not more than 2 percent; the medium of the additive (21) is one or a mixture of a plurality of carbon monoxide, hydrogen, methane, air and oxygen.
10. The pulverized coal pressurized continuous feeding method according to claim 7, characterized in that: the medium of the main air source (1), the back-blowing air source (11) and the auxiliary air source (18) is one or a mixture of a plurality of nitrogen, oxygen-deficient air and carbon dioxide, and the volume fraction of oxygen molecules in the medium is not higher than 9%; the pressure value of the main air source (1) is lower than that of the auxiliary air source (18) but higher than that of the back-blowing air source (11).
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB995051A (en) * | 1962-08-11 | 1965-06-10 | Siderurgie Fse Inst Rech | Improvements in and relating to devices for regulating the flow of substances suspended in a compressed gas |
| DE4237177A1 (en) * | 1992-07-23 | 1994-01-27 | Bernd Feldhaus | Controlled delivery plant for powdered goods, e.g. coal powder - has at least two outlet pipes for silo feeding delivery cylinder with aerated exit nozzle for discharge |
| KR20000037761A (en) * | 1998-12-02 | 2000-07-05 | 이구택 | Device for controlling feed hopper of dust coal |
| CN105775748A (en) * | 2016-04-20 | 2016-07-20 | 陕西延长石油（集团）有限责任公司 | Rotary feeding pulverized coal quantitative feeding and conveying device and method |
| CN205932469U (en) * | 2016-08-18 | 2017-02-08 | 常州道金智能科技有限公司 | A storehouse parallel connection of pumps conveying system for powder transport |
| CN206050973U (en) * | 2016-08-18 | 2017-03-29 | 常州道金智能科技有限公司 | A kind of storehouse pump induction system for powder conveying |
| CN106906005A (en) * | 2017-04-17 | 2017-06-30 | 航天长征化学工程股份有限公司 | Pulverized coal pressurized conveying device and method |
| CN107057769A (en) * | 2017-01-13 | 2017-08-18 | 陕西延长石油（集团）有限责任公司 | A kind of fine coal feeding control device and method |
| CN107418630A (en) * | 2017-08-17 | 2017-12-01 | 武汉高斯生态能源技术有限公司 | Biomass pressure conveyer device |
| CN208070831U (en) * | 2018-03-01 | 2018-11-09 | 白银有色集团股份有限公司 | A kind of zinc abstraction calcine trans-portation device |
| CN209475792U (en) * | 2018-12-13 | 2019-10-11 | 国家能源投资集团有限责任公司 | Coal dust lock hopper pressure release filter device in pressurization of dry pulverized coal dense-phase transporting system |
| TWM611857U (en) * | 2021-01-13 | 2021-05-11 | 統一企業股份有限公司 | Granular material quantitative feeder |
| CN113355136A (en) * | 2021-06-25 | 2021-09-07 | 宁夏神耀科技有限责任公司 | Nozzle system with steam as carrier flow and reactant and material conveying method |
-
2022
- 2022-08-01 CN CN202210919918.0A patent/CN115058263B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB995051A (en) * | 1962-08-11 | 1965-06-10 | Siderurgie Fse Inst Rech | Improvements in and relating to devices for regulating the flow of substances suspended in a compressed gas |
| DE4237177A1 (en) * | 1992-07-23 | 1994-01-27 | Bernd Feldhaus | Controlled delivery plant for powdered goods, e.g. coal powder - has at least two outlet pipes for silo feeding delivery cylinder with aerated exit nozzle for discharge |
| KR20000037761A (en) * | 1998-12-02 | 2000-07-05 | 이구택 | Device for controlling feed hopper of dust coal |
| CN105775748A (en) * | 2016-04-20 | 2016-07-20 | 陕西延长石油（集团）有限责任公司 | Rotary feeding pulverized coal quantitative feeding and conveying device and method |
| CN205932469U (en) * | 2016-08-18 | 2017-02-08 | 常州道金智能科技有限公司 | A storehouse parallel connection of pumps conveying system for powder transport |
| CN206050973U (en) * | 2016-08-18 | 2017-03-29 | 常州道金智能科技有限公司 | A kind of storehouse pump induction system for powder conveying |
| CN107057769A (en) * | 2017-01-13 | 2017-08-18 | 陕西延长石油（集团）有限责任公司 | A kind of fine coal feeding control device and method |
| CN106906005A (en) * | 2017-04-17 | 2017-06-30 | 航天长征化学工程股份有限公司 | Pulverized coal pressurized conveying device and method |
| CN107418630A (en) * | 2017-08-17 | 2017-12-01 | 武汉高斯生态能源技术有限公司 | Biomass pressure conveyer device |
| CN208070831U (en) * | 2018-03-01 | 2018-11-09 | 白银有色集团股份有限公司 | A kind of zinc abstraction calcine trans-portation device |
| CN209475792U (en) * | 2018-12-13 | 2019-10-11 | 国家能源投资集团有限责任公司 | Coal dust lock hopper pressure release filter device in pressurization of dry pulverized coal dense-phase transporting system |
| TWM611857U (en) * | 2021-01-13 | 2021-05-11 | 統一企業股份有限公司 | Granular material quantitative feeder |
| CN113355136A (en) * | 2021-06-25 | 2021-09-07 | 宁夏神耀科技有限责任公司 | Nozzle system with steam as carrier flow and reactant and material conveying method |
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| CN115058263A (en) | 2022-09-16 |
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