CN108545483B - Dense-phase pneumatic conveying equipment and method for powder materials - Google Patents
Dense-phase pneumatic conveying equipment and method for powder materials Download PDFInfo
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- CN108545483B CN108545483B CN201810605678.0A CN201810605678A CN108545483B CN 108545483 B CN108545483 B CN 108545483B CN 201810605678 A CN201810605678 A CN 201810605678A CN 108545483 B CN108545483 B CN 108545483B
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- 239000000463 material Substances 0.000 title claims abstract description 193
- 239000000843 powder Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 19
- 238000002309 gasification Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 28
- 239000012159 carrier gas Substances 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009826 distribution Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses equipment and a method for dense-phase pneumatic conveying of powder materials. The equipment comprises a material distributing tank, a material conveying pipeline and a material distributor; wherein, the bottom of the material sending tank is provided with at least one cone hopper for discharging, the cone of the cone hopper is provided with a first ventilation device, and the vertex of the cone hopper is provided with a material outlet connected with a material conveying pipeline; the material conveying pipeline is sequentially provided with a material cut-off valve, a second ventilation device, a material flow regulating valve and a material mass flowmeter along the material conveying direction; wherein one end of the material distributor is provided with a material inlet and is connected with the tail end of the material conveying pipeline, the other end of the material distributor is provided with at least one material outlet, each material outlet is connected with the burner of the gasification furnace through a branch, and the branch is provided with a resistance component. The dense-phase pneumatic conveying equipment for powder materials has the advantages of simple structure, convenient maintenance, low investment operation and maintenance cost, and simpler and more reliable operation.
Description
Technical Field
The invention relates to equipment and a method for dense-phase pneumatic conveying of powder materials.
Background
In the dry coal powder entrained-flow bed gasification technology process, coal powder is sent into a gasification furnace for gasification reaction through a burner in a dense-phase pneumatic conveying mode. In the existing dry coal powder entrained-flow bed coal gas industrial device, the coal powder dense-phase pneumatic conveying system adopts a scheme that one coal powder pipeline corresponds to one burner or a scheme that a plurality of coal powder pipelines correspond to one burner so as to meet the requirement that the coal powder flow of each coal powder pipeline is accurately controllable.
The prior dense-phase pneumatic conveying equipment for powder materials has the following defects: the investment, operation and maintenance costs are too high, the operation and operation are complex, the overhaul time is long, etc. In general, in order to ensure that the oxygen-coal ratio parameters of each burner are controllable, each coal powder conveying pipeline is independently controlled, namely, a coal powder cut-off valve, a coal powder flow regulating valve, two coal powder flow meters, a coal powder three-way valve, a plurality of pressure sensors, a plurality of gas regulating valves and other series of meters and valves are arranged on each pipeline. In addition, corresponding to the number of the pulverized coal conveying pipelines, a plurality of pulverized coal outlets are also needed for the corresponding material sending tank, so that the material sending tank is complex in structure and high in manufacturing cost.
In addition, for the multi-nozzle gasifier of smaller scale, if each nozzle is correspondingly provided with a set of pulverized coal conveying pipeline from the material sending tank to the gasifier, the pipeline conveying amount is small, the flow regulating valve is easy to be blocked due to the adhesion and agglomeration of powder, dense phase conveying is difficult to realize, and the flow of the pulverized coal is difficult to reach a stable and controllable state.
Disclosure of Invention
The invention aims to overcome the defects of complex tank structure, high manufacturing cost, high running and maintaining cost, complex operation, long overhaul time and the like of the dense-phase pneumatic conveying equipment for powder materials in the prior art, and provides equipment and a method for dense-phase pneumatic conveying of the powder materials. The dense-phase pneumatic conveying equipment for powder materials has the advantages of simple structure, convenient maintenance, low investment operation and maintenance cost, simpler and more reliable operation and operation, and improved stability and controllability.
The invention solves the technical problems through the following technical scheme.
The invention provides powder material dense-phase pneumatic conveying equipment which comprises a material distributing tank, a material conveying pipeline and a material distributor, wherein the material distributing tank is connected with the material distributor;
the bottom of the material sending tank is provided with at least one cone hopper for discharging, a cone of the cone hopper is provided with a first ventilation device, and a discharge port connected with the material conveying pipeline is arranged at the vertex of the cone hopper;
the material conveying pipeline is sequentially provided with a material cut-off valve, a second ventilation device, a material flow regulating valve and a material mass flowmeter along the material conveying direction;
one end of the material distributor is provided with a material inlet connected with the tail end of the material conveying pipeline, the other end of the material distributor is provided with at least one material outlet, each material outlet is connected with a burner of the gasification furnace through a branch, and a resistance component is arranged on the branch.
In the invention, the number of the cone hoppers is preferably 1-3.
In the present invention, preferably, the material conveying pipeline is further provided with a plurality of pressure sensors, and generally, the pressure sensors can be used for monitoring the pressure distribution condition of the conveying pipeline in real time, for example, a first pressure sensor is arranged between the second ventilation device and the material flow regulating valve.
In the present invention, it is known to those skilled in the art that the mass flowmeter is preferably mounted to the vertical section of the pipeline in order to reduce or avoid the effects of gravity.
In the present invention, preferably, a three-way valve is disposed between the material mass flowmeter and the material distributor, and those skilled in the art know that the three-way valve can switch the material between the state of entering the gasification furnace and the state of not entering the gasification furnace.
Wherein, preferably, the length of the pipeline between the three-way valve and the material distributor is not less than 10 times of the diameter of the pipeline.
Preferably, a second pressure sensor is arranged between the three-way valve and the material distributor, and the distance between the second pressure sensor and the material distributor is not particularly limited, so long as the purpose of monitoring the state of the material distributor can be achieved.
In the present invention, it is known to those skilled in the art that the material dispenser is preferably mounted to the vertical section of the pipeline in order to reduce or avoid the effects of gravity.
In the invention, preferably, a three-way device for regulating and controlling the carrier gas is arranged at the material inlet of the material distributor, and the carrier gas can be used for regulating and controlling the pulverized coal conveying speed in the pipeline through inputting gas, which is known to the person skilled in the art.
In the invention, the material distributor is preferably provided with 2-4 material outlets, and the number of the branches is preferably 2-4; those skilled in the art will appreciate that the arrangement of each of the branches should be identical to facilitate control and regulation.
In the invention, those skilled in the art know that the uniform distribution performance of the pulverized coal in each branch can be judged and adjusted by monitoring the resistance performance value of the resistance component so as to improve the uniform distribution effect.
In the present invention, the resistance member is a resistance member conventionally used in the art, for example, the resistance member may be a tapered and expanding pipe, an orifice plate, a regulating valve, or the like.
In the invention, preferably, the resistance component is made of ceramic, so that friction of powder materials on the force assembly component can be reduced, and the powder materials are conveyed conveniently.
In the invention, the length of the branch is not particularly limited, and can be set according to actual conditions.
In the present invention, preferably, the branch is further provided with a plurality of pressure sensors, for example, a third pressure sensor is provided at the material outlet; a fourth pressure sensor is arranged between the resistance component and the tail end of the branch.
Preferably, a three-way device for regulating and controlling the carrier gas is arranged between the third pressure sensor and the resistance component, so that the resistance between the branches is regulated and controlled uniformly, and the material flow distribution between the branches is basically consistent.
Preferably, a material on-line monitoring device is arranged between the three-way device for regulating and controlling the carrier gas and the resistance component, and is used for monitoring whether the material flow of the branch is uniformly distributed.
The invention also provides a dense-phase pneumatic conveying method for powder materials, which is carried out by adopting the dense-phase pneumatic conveying equipment for powder materials, and comprises the following steps:
powder material enters a material conveying pipeline from a material sending tank through a first ventilation device through a material outlet of a cone hopper, sequentially enters a material distributor through a material cut-off valve, a second ventilation device, a material flow regulating valve and a material mass flowmeter, and then enters a gasification furnace through a branch.
In the invention, the powder material is a powder material conventional in the art, such as coal powder and the like; those skilled in the art will appreciate that the powder material needs to be dried prior to delivery.
In the present invention, it is known to those skilled in the art that the gas velocity in the material conveying pipeline can be adjusted according to the kind of the powder material to be conveyed during actual use, for example, when the powder material is pulverized coal, the gas velocity in the material conveying pipeline is preferably 2-20m/s, more preferably 5-12m/s, still more preferably 8-10m/s.
In the present invention, those skilled in the art know that, in actual use, the powder concentration in the material conveying pipeline can be adjusted according to the type of the conveyed powder material, for example, when the powder material is pulverized coal, the powder concentration in the material conveying pipeline is preferably 50-500kg/m 3 More preferably 80-300kg/m 3 Further more preferably 100-200kg/m 3 。
In the present invention, those skilled in the art know that, in the actual use process, the pressure difference between the material dispensing tank and the gasifier may be adjusted according to the type of the powder material to be conveyed, for example, when the powder material is pulverized coal, the pressure difference between the material dispensing tank and the gasifier is preferably 0.1-1.2MPa, more preferably 0.3-0.8MPa, and even more preferably 0.6MPa.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The reagents and materials used in the present invention are commercially available.
The invention has the positive progress effects that:
the dense-phase pneumatic conveying equipment for powder materials has the advantages of simple structure, convenient maintenance, low investment operation and maintenance cost, and simpler and more reliable operation.
Drawings
Fig. 1 shows a dense phase pneumatic conveying apparatus for powder materials in example 1 of the present invention.
The reference numerals are as follows:
hair jar 1
Cone bucket 2
First ventilation means 3
Material shut-off valve 4
Second ventilation means 5
Material flow regulating valve 6
Material mass flowmeter 7
Material distributor 8
Branch 9
First pressure sensor 10
Three-way valve 11
Second pressure sensor 12
First three-way device 13 for regulating and controlling carrier gas
Resistance member 14
Third pressure sensor 15
Fourth pressure sensor 16
Second three-way device 17 for regulating and controlling carrier gas
Material on-line monitoring device 18
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
Example 1
The powder material dense-phase pneumatic conveying device shown in fig. 1 (wherein one material conveying pipeline and one branch pipeline are completely drawn, the rest material conveying pipelines are the same as those shown in fig. 1, and the rest branch pipelines are the same as those shown in fig. 1) comprises a material sending tank 1, a material conveying pipeline and a material distributor 8;
wherein, the bottom of the material sending tank 1 is provided with 2 cone hoppers 2 for discharging, the cone of the cone hoppers 2 is provided with a first ventilation device 3, and the vertex of the cone hoppers 2 is provided with a material outlet connected with a material conveying pipeline;
the material conveying pipeline is sequentially provided with a material cut-off valve 4, a second ventilation device 5, a material flow regulating valve 6 and a material mass flowmeter 7 along the material conveying direction;
wherein, one end of the material distributor 8 is provided with a material inlet connected with the tail end of the material conveying pipeline, the other end of the material distributor 8 is provided with at least one material outlet, each material outlet is connected with the burner of the gasification furnace through a branch 9, and the branch 9 is provided with a resistance component 14.
A first pressure sensor 10 is arranged between the second ventilation device 5 and the material flow regulating valve 6.
A three-way valve 11 is arranged between the material mass flowmeter 7 and the material distributor 8.
The length of the pipeline between the three-way valve 11 and the material distributor 8 is 10 times of the pipeline diameter.
A second pressure sensor 12 is arranged between the three-way valve 11 and the material distributor 8.
The material inlet of the material distributor 8 is provided with a three-way device 13 for regulating and controlling the carrier gas for regulating and controlling the pulverized coal conveying speed in the pipeline.
The material distributor 8 is provided with 2 material outlets, and the branch 9 is 2.
Each branch 9 is provided with a resistance element 14 to promote even distribution.
The resistance member 14 is a tapered and expanding tube.
Each branch 9 is also provided with two pressure sensors, and a third pressure sensor 15 is arranged at the material outlet; a fourth pressure sensor 16 is arranged between the resistance element 14 and the end of the branch 9.
A three-way device 17 for regulating and controlling the carrier gas is arranged between the third pressure sensor 15 and the resistance component 14 so as to regulate and control the resistance between the branches uniformly, thereby ensuring the material flow distribution between the branches to be basically consistent.
A material on-line monitoring device 18 is arranged between the three-way device 17 for regulating and controlling the carrier gas and the resistance component 14, and is used for monitoring whether the material flow of the branch is uniformly distributed.
The steps of adopting the equipment to carry out dense-phase pneumatic conveying of the powder materials are as follows:
the dried pulverized coal enters a material conveying pipeline from a material sending tank 1 through a first ventilation device 3 through a discharge hole of a cone hopper 2, sequentially enters a material distributor 8 through a material cut-off valve 4, a second ventilation device 5, a material flow regulating valve 6 and a material mass flowmeter 7, and then enters a gasification furnace through a branch 9.
In the embodiment, the air speed in the material conveying pipeline is 8-10m/s.
In the embodiment, the powder concentration in the material conveying pipeline is 150-200kg/m 3 。
In this example, the pressure difference between the material-dispensing tank 1 and the gasification furnace was 0.6MPa.
The powder material conveying equipment well solves the problems of uneven distribution, uncontrolled oxygen-coal ratio and the like, realizes uniform distribution of each branch, reduces the risks of blockage and instability, and further easily realizes dense phase conveying and controllable stable state.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. The dense-phase pneumatic conveying equipment for the powder materials is characterized by comprising a material distributing tank, a material conveying pipeline and a material distributor;
the bottom of the material sending tank is provided with at least one cone hopper for discharging, a cone of the cone hopper is provided with a first ventilation device, and a discharge port connected with the material conveying pipeline is arranged at the vertex of the cone hopper;
the material conveying pipeline is sequentially provided with a material cut-off valve, a second ventilation device, a material flow regulating valve and a material mass flowmeter along the material conveying direction;
one end of the material distributor is provided with a material inlet which is connected with the tail end of the material conveying pipeline, the other end of the material distributor is provided with at least one material outlet, each material outlet is connected with a burner of the gasification furnace through a branch, and the branch is provided with a resistance component; the resistance component is a gradually-reduced and gradually-expanded pipe or a pore plate;
a first pressure sensor is arranged between the second ventilation device and the material flow regulating valve; a three-way valve is arranged between the material mass flowmeter and the material distributor; a three-way device for first regulating and controlling carrier gas is arranged at a material inlet of the material distributor; a second pressure sensor is arranged between the three-way valve and the material distributor; a third pressure sensor is arranged at the material outlet; a fourth pressure sensor is arranged between the resistance component and the tail end of the branch; a tee joint device for second regulating carrier gas is arranged between the third pressure sensor and the resistance component;
wherein, be used for the second regulation and control three-way device of carrier gas with be provided with the online supervisory equipment of material between the resistance component.
2. The apparatus of claim 1, wherein the number of cones is 1-3;
the material mass flowmeter is arranged on the vertical section of the pipeline;
the material distributor is arranged on the vertical section of the pipeline;
the material distributor is provided with 2-4 material outlets, and the number of the branches is 2-4;
and/or the resistance component is made of ceramic.
3. The apparatus of claim 1, wherein a length of tubing between the three-way valve and the material dispenser is no less than 10 tubing diameters.
4. A method for dense phase pneumatic conveying of powder materials using the apparatus of any one of claims 1-3, comprising the steps of:
powder material enters a material conveying pipeline from a material sending tank through a first ventilation device through a material outlet of a cone hopper, sequentially enters a material distributor through a material cut-off valve, a second ventilation device, a material flow regulating valve and a material mass flowmeter, and then enters a gasification furnace through a branch.
5. The method of claim 4, wherein the powder material is pulverized coal;
the air speed in the material conveying pipeline is 2-20m/s;
the powder concentration in the material conveying pipeline is 50-500kg/m 3 ；
And/or the pressure difference between the material sending tank and the gasification furnace is 0.1-1.2MPa.
6. The method of claim 4, wherein the air velocity in the material transfer line is 5-12m/s;
the powder concentration in the material conveying pipeline is 80-300kg/m 3 ；
And/or the pressure difference between the material sending tank and the gasification furnace is 0.3-0.8MPa.
7. The method of claim 4, wherein the air velocity in the material transfer line is 8-10m/s;
the powder concentration in the material conveying pipeline is 100-200kg/m 3 ；
And/or the pressure difference between the material sending tank and the gasification furnace is 0.6MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605678.0A CN108545483B (en) | 2018-06-13 | 2018-06-13 | Dense-phase pneumatic conveying equipment and method for powder materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605678.0A CN108545483B (en) | 2018-06-13 | 2018-06-13 | Dense-phase pneumatic conveying equipment and method for powder materials |
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| Publication Number | Publication Date |
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| CN108545483A CN108545483A (en) | 2018-09-18 |
| CN108545483B true CN108545483B (en) | 2024-02-27 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0059904A1 (en) * | 1981-03-11 | 1982-09-15 | Fried. Krupp Gesellschaft mit beschränkter Haftung | Plant for feeding coal to metallurgical processing vessels with a plurality of blow-in sites, and method of operating the plant |
| JP2000119666A (en) * | 1998-10-16 | 2000-04-25 | Mitsubishi Heavy Ind Ltd | Supplying system for pulverized coal for coal gasification furnace |
| CN1540209A (en) * | 2003-11-03 | 2004-10-27 | 华东理工大学 | Equipment and implementing method capable of regulation controlling and uniform distributing flux of powdered coal |
| JP2012025799A (en) * | 2010-07-20 | 2012-02-09 | Electric Power Dev Co Ltd | Coal gasification furnace system |
| CN105347040A (en) * | 2015-12-01 | 2016-02-24 | 东南大学 | Pressure feed type high-pressure dense-phase pneumatic conveying device and pneumatic conveying method |
| CN106241382A (en) * | 2016-09-08 | 2016-12-21 | 东南大学 | A kind of pressure sending type height densification phase multichannel air conveying issuance of materials tank and induction system thereof |
| CN208560956U (en) * | 2018-06-13 | 2019-03-01 | 华东理工大学 | A kind of equipment of powder material Dense Phase Pneumatic Conveying |
-
2018
- 2018-06-13 CN CN201810605678.0A patent/CN108545483B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0059904A1 (en) * | 1981-03-11 | 1982-09-15 | Fried. Krupp Gesellschaft mit beschränkter Haftung | Plant for feeding coal to metallurgical processing vessels with a plurality of blow-in sites, and method of operating the plant |
| JP2000119666A (en) * | 1998-10-16 | 2000-04-25 | Mitsubishi Heavy Ind Ltd | Supplying system for pulverized coal for coal gasification furnace |
| CN1540209A (en) * | 2003-11-03 | 2004-10-27 | 华东理工大学 | Equipment and implementing method capable of regulation controlling and uniform distributing flux of powdered coal |
| JP2012025799A (en) * | 2010-07-20 | 2012-02-09 | Electric Power Dev Co Ltd | Coal gasification furnace system |
| CN105347040A (en) * | 2015-12-01 | 2016-02-24 | 东南大学 | Pressure feed type high-pressure dense-phase pneumatic conveying device and pneumatic conveying method |
| CN106241382A (en) * | 2016-09-08 | 2016-12-21 | 东南大学 | A kind of pressure sending type height densification phase multichannel air conveying issuance of materials tank and induction system thereof |
| CN208560956U (en) * | 2018-06-13 | 2019-03-01 | 华东理工大学 | A kind of equipment of powder material Dense Phase Pneumatic Conveying |
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| CN108545483A (en) | 2018-09-18 |
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