CN108048137A - A kind of coal dust current stabilization conveying device and carrying method - Google Patents
A kind of coal dust current stabilization conveying device and carrying method Download PDFInfo
- Publication number
- CN108048137A CN108048137A CN201711322543.5A CN201711322543A CN108048137A CN 108048137 A CN108048137 A CN 108048137A CN 201711322543 A CN201711322543 A CN 201711322543A CN 108048137 A CN108048137 A CN 108048137A
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- Prior art keywords
- cone
- feedstock vessel
- coal dust
- coal
- conveying device
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The invention discloses a kind of coal dust current stabilization conveying device and carrying methods, are to include nitrogen and carbon dioxide Dense Phase Pneumatic Conveying dry pulverized coal to pressurized-gasification furnace using inert gas, stablize flow velocity to obtain close phase pressurization coal dust；The device includes feedstock vessel, feedstock vessel cone, ventilation cone, partition plate, fixture block, feed-line and air distribution plate；In the cone position weld clip block of coal dust feedstock vessel, partition plate is clamped, space in tapering is separated into several lower material spaces；This method can steadily respectively to two even a plurality of coal burner pulverized coal conveyings, avoid fluctuation because coal dust conveying capacity to cause gasification in-furnace temperature it is unstable due to influence normal gasification operation and equipment damage, also save cost of investment.
Description
Technical field
The invention belongs to coal dust conveying technology field, more particularly to a kind of coal dust current stabilization conveying device and carrying method.
Background technology
The natural resources in China is for basic characteristics with " rich coal, oil-poor, few gas ", this just determines that coal will once can
Very big proportion is accounted in the consumption of source.Compared with petroleum gas, the coal reserves in China is relatively large, and China is also the world
First big coal country.Coal is directly low using not only efficiency, but also causes serious pollution to air, soil and water quality, in order to
It improves the utilization ratio of coal, reduce pollution, risen the research and development that technology is utilized to clean coal both at home and abroad, wherein, coal
Gasification is the core technology of coal clean utilization, is the leading technology of IGCC power generations and coal chemical technology.The coal according to needed for gasification
Flow regime in gasification furnace of granular size and particle, gasification furnace is generally divided into three classes, i.e., fixed bed, fluid bed are gentle
Fluidized bed gasification technology.Different shape of the entrained flow bed gasification technology to feed is divided into dry pulverized coal and coal water slurry gasification technology, and dry
In coal dust gasification technique, dry pulverized coal two-phase transportation is one of key technology of dry coal powder airflow bed gasification.The current stabilization conveying of coal dust
It is the premise of dry coal powder airflow bed gasification stable operation.The double-section dry coal powder pressurizing gasifying apparatus of China's independent intellectual property right should
With the close phase pressurization conveying technology of dry pulverized coal, using single cone multiple branch circuit top discharge or bore multiple branch circuit bottom discharge structure type more,
Fluidized plate of the pot bottom setting perpendicular to coal dust nozzle is conveyed, can ensure the continuous accurate pulverized coal conveying on request of coal dust.
But it is difficult in actual operation there is also multiple branch circuit while desired value adjusts conveying capacity and has the problem of powder carry interference mutually.
The content of the invention
The present invention is directed to multiple branch circuit coal dust feed-line can not meet multiple branch circuit coal simultaneously in transfer pot equipment is singly bored
The balance and stability of line operation, operating status need more to improve to meet the increasing requirement of Industry Control, and then
A kind of coal dust current stabilization conveying device and carrying method are provided, which can uniformly, steadily supply to gasifying furnace nozzle
Coal dust, this method have economic, efficient, safe and easy to operate effect.
In order to achieve the above object, the technical scheme is that：
A kind of coal dust current stabilization conveying device, including feedstock vessel 1,1 lower part of feedstock vessel is feedstock vessel cone 2, feedstock vessel cone 2
Bottom is communicated with ventilation cone 3, and air distribution plate 7 is provided in ventilation cone 3, and 2 inner wall symmetric position of feedstock vessel cone is welded with multigroup folder
Block 5, every group of fixture block 5 clamp a partition plate 4, and space in feedstock vessel cone 2 is separated into several lower material spaces by multiple partition plates 4；It is defeated
Pipeline 6 is sent to be inserted into from 1 top of feedstock vessel and is stretched into feedstock vessel cone 2, the nozzle of feed-line 6 is protected with the distance of air distribution plate 7
It holds in the range of 50~300mm, Boiler pressure control valve is provided on feed-line 6.
Free gap is left between the fixture block 5 and partition plate 4, can be produced relative sliding.
The distance of partition plate 4 and air distribution plate 7 that air distribution plate 7 is closed in the feedstock vessel cone 2 is less than 20mm.
4 thickness of partition plate is 10-30mm, material Q345.
The carrying method of the coal dust current stabilization conveying device, feedstock vessel 1 store a large amount of coal dusts, under normal delivery situation,
According to coal dust amount needed for gasification furnace Load Regulation, the inert gas introduced by the external world is opened as fluidized wind, with reference to feed-line 6
Boiler pressure control valve and corresponding discharging control valve door, fluidized wind is entered into the feedstock vessel cone 2 of feedstock vessel 1 and ventilation cone 3,
By being fluidized after air distribution plate 7 to the coal dust of feedstock vessel 1, the coal dust being fluidized, which is sent under the effect of high-pressure delivery wind to coal, to be burnt
Mouth.
Compared to the prior art compared with of the invention has the following advantages that：
1st, coal dust current stabilization conveying device of the invention not only can guarantee that blanking, discharging were smooth, but can be by extra quality pipelined when
Interact and minimize.
2nd, in coal dust transmission process, to the cone position weld clip block of coal dust feedstock vessel, partition plate is clamped, reaches seam and puts down
Steady operation.
Description of the drawings
Fig. 1 is coal dust current stabilization conveying device schematic diagram of the present invention.
Fig. 2 is baffle arrangement schematic diagram.
Fig. 3 is partition plate scheme of installation.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of coal dust current stabilization conveying device of the present invention, including feedstock vessel 1, feedstock vessel cone 2, ventilation cone 3,
Partition plate 4, fixture block 5, feed-line 6 and air distribution plate 7；1 lower part of feedstock vessel is feedstock vessel cone 2, and 2 bottom of feedstock vessel cone is communicated with
Ventilation cone 3 is provided with air distribution plate 7 in ventilation cone 3, and 2 inner wall symmetric position of feedstock vessel cone is welded with multigroup fixture block 5, every group of folder
Block 5 clamps a partition plate 4, and space in feedstock vessel cone 2 is separated into several lower material spaces by multiple partition plates 4；Feed-line 6 to
1 top of batch can is inserted into and is stretched into feedstock vessel cone 2, and the nozzle of feed-line 6 and the distance of air distribution plate 7 be maintained at 50~
In the range of 300mm, Boiler pressure control valve is provided on feed-line 6.
Fixture block is welded at 2 position of cone of feedstock vessel, as shown in Figure 2；Fixture block 5 clamps partition plate 3, as shown in Figure 3；Feedstock vessel
2 space of cone is separated into several lower material spaces, as shown in Figure 2.
As the preferred embodiment of the present invention, free gap is left between the fixture block 5 and partition plate 4, can be generated opposite
It slides；Such design is taken mainly to stretch uneven and cause feedstock vessel 1 in view of equipment caused by gravity or thermal stress
Damage, protection equipment have saved cost of investment.
As the preferred embodiment of the present invention, the partition plate 4 of air distribution plate 7 and air distribution plate 7 are closed in the feedstock vessel cone 2
Distance be less than 20mm；By this mounting distance, it can utmostly optimize conveying gas-solid ratio, can also reduce coal to a certain extent
Mutual disturbance between powder feed-line.
As the preferred embodiment of the present invention, 4 thickness of partition plate is 10-30mm, material Q345.
The carrying method of coal dust current stabilization conveying device of the present invention, feedstock vessel 1 store a large amount of coal dusts, in normal delivery situation
Under, according to coal dust amount needed for gasification furnace Load Regulation, open inert gas (the nitrogen and carbon dioxide) conduct introduced by the external world
Fluidized wind, Boiler pressure control valve and corresponding discharging control valve door with reference to feed-line 6, enters feedstock vessel cone by fluidized wind
2 and ventilation cone 3, by being fluidized after air distribution plate 7 to the coal dust of feedstock vessel 1, the coal dust being fluidized is acted in high-pressure delivery wind
Under send to coal burner.
Claims (5)
1. a kind of coal dust current stabilization conveying device, including feedstock vessel (1), it is characterised in that：Feedstock vessel (1) lower part is feedstock vessel cone
(2), feedstock vessel cone (2) bottom is communicated with ventilation cone (3), and air distribution plate (7), feedstock vessel cone (2) are provided in ventilation cone (3)
Inner wall symmetric position is welded with multigroup fixture block (5), and every group of fixture block (5) clamps a partition plate (4), and multiple partition plates (4) are by feedstock vessel
Cone (2) interior space is separated into several lower material spaces；Feed-line (6) is inserted into from feedstock vessel (1) top and stretches into feedstock vessel cone
In body (2), the nozzle of feed-line (6) is maintained at the distance of air distribution plate (7) in the range of 50~300mm, on feed-line (6)
It is provided with Boiler pressure control valve.
2. a kind of coal dust current stabilization conveying device according to claim 1, it is characterised in that：The fixture block (5) and partition plate (4)
Between leave free gap, can produce relative sliding.
3. a kind of coal dust current stabilization conveying device according to claim 1, it is characterised in that：On the feedstock vessel cone (2)
The distance of the partition plate (4) and air distribution plate (7) that close on air distribution plate (7) is less than 20mm.
4. a kind of coal dust current stabilization conveying device according to claim 1, it is characterised in that：Partition plate (4) thickness is 10-
30mm, material Q345.
5. the carrying method of coal dust current stabilization conveying device described in claim 1, it is characterised in that：Feedstock vessel (1) stores a large amount of coals
Powder under normal delivery situation, according to coal dust amount needed for gasification furnace Load Regulation, is opened by the gas that the external world introduces as fluidisation
Wind, Boiler pressure control valve and corresponding discharging control valve door with reference to feed-line (6), enters feedstock vessel (1) by fluidized wind
Feedstock vessel cone (2) and ventilation cone (3), by being fluidized after air distribution plate (7) to the coal dust of feedstock vessel (1), the coal being fluidized
Powder is sent under the effect of high-pressure delivery wind to coal burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711322543.5A CN108048137B (en) | 2017-12-12 | 2017-12-12 | Pulverized coal steady-flow conveying device and conveying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711322543.5A CN108048137B (en) | 2017-12-12 | 2017-12-12 | Pulverized coal steady-flow conveying device and conveying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108048137A true CN108048137A (en) | 2018-05-18 |
| CN108048137B CN108048137B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711322543.5A Active CN108048137B (en) | 2017-12-12 | 2017-12-12 | Pulverized coal steady-flow conveying device and conveying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709196A (en) * | 2018-08-10 | 2018-10-26 | 徐州燃烧控制研究院有限公司 | A kind of Geldart-D particle boiler coal-ash combustion system |
-
2017
- 2017-12-12 CN CN201711322543.5A patent/CN108048137B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709196A (en) * | 2018-08-10 | 2018-10-26 | 徐州燃烧控制研究院有限公司 | A kind of Geldart-D particle boiler coal-ash combustion system |
| CN108709196B (en) * | 2018-08-10 | 2024-04-26 | 徐州燃烧控制研究院有限公司 | Pulverized coal combustion system of pneumatic conveying boiler |
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| Publication number | Publication date |
|---|---|
| CN108048137B (en) | 2023-07-07 |
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