CN209816043U - Fluidized bed gasification furnace capable of improving coal gasification efficiency - Google Patents
Fluidized bed gasification furnace capable of improving coal gasification efficiency Download PDFInfo
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- CN209816043U CN209816043U CN201920125357.0U CN201920125357U CN209816043U CN 209816043 U CN209816043 U CN 209816043U CN 201920125357 U CN201920125357 U CN 201920125357U CN 209816043 U CN209816043 U CN 209816043U
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- coal
- gas distribution
- distribution plate
- gas
- gasification
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- 239000003245 coal Substances 0.000 title claims abstract description 111
- 238000002309 gasification Methods 0.000 title claims abstract description 58
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 238000009826 distribution Methods 0.000 claims description 58
- 238000007664 blowing Methods 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 14
- 239000002817 coal dust Substances 0.000 claims description 7
- 239000003818 cinder Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 64
- 239000000843 powder Substances 0.000 description 15
- 238000007599 discharging Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The utility model relates to a can improve fluidized bed gasifier of coal gasification efficiency, including the barrel, the gas outlet has been seted up at the barrel top, and the cinder notch has been seted up to the bottom, is provided with central efflux pipe in the cinder notch, and the lower part is buggy heap gasification reaction area in the barrel, and central efflux pipe is located buggy heap gasification reaction area bottom center, is provided with a plurality of intake pipes on the barrel, and the barrel lower part still is provided with a plurality of coal feeding pipes, and coal feeding pipe inserts the barrel and inside and to buggy heap gasification reaction area central point put towards. The utility model discloses a directly send into buggy heap gasification reaction zone central point with the buggy and put, make the direct burning and then participate in gasification reaction that gets into central efflux district of coal as fired to the gasification efficiency of whole fluidized bed gasifier has been improved greatly.
Description
The technical field is as follows:
the utility model belongs to the technical field of coal gasification, concretely relates to can improve fluidized bed gasifier of coal gasification efficiency.
Background art:
the fluidized bed gasification furnace is widely applied in the field of coal gasification, and comprises a cylinder body, wherein the upper end and the lower end of the cylinder body are respectively provided with a gas outlet and a slag discharge port, the middle lower part divides the cylinder body into an upper chamber and a lower chamber through a gas distribution plate, the upper chamber is used for coal dust reaction, the lower chamber is used for gas distribution, the gas distribution plate is in a conical cylinder shape with an upper opening and a lower opening, gas holes are distributed on the gas distribution plate, the gas in the lower chamber is upwards sprayed out from the gas holes to enable the coal dust to be suspended, the lower port of the gas distribution plate is connected with a slag discharge pipe which downwards passes through the slag discharge port, a central jet pipe is arranged in the slag discharge pipe, oxygen and steam are sprayed into the upper chamber by the central jet pipe to assist the combustion of the coal dust, a coal dust combustion area, namely a central jet area is simultaneously driven to flow, therefore, then flows to the periphery of the central jet flow area, high-temperature coal powder is brought to the peripheral space, so that the coal powder in the peripheral space is contacted with steam to react, however, the traditional coal feeding mode is that the coal is fed into the furnace through a coal inlet pipe above a coal powder pile, the coal as fired freely falls to the upper layer of the coal pile, then gradually moves to the periphery along with the circulation flow of the coal powder, gradually sinks and finally gradually enters the central jet flow area from the lower part of the coal pile to be combusted, and the gasification reaction can be started only after the temperature rises after the combustion, therefore, the coal as fired is in an unreactive state for a long time after entering the gasification furnace, so that the reaction efficiency of the whole gasification furnace is not high.
The utility model has the following contents:
the to-be-solved technical problem of the utility model is: provided is a fluidized bed gasification furnace capable of improving the coal gasification efficiency.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a fluidized bed gasification furnace capable of improving coal gasification efficiency comprises a cylinder body, wherein the top of the cylinder body is provided with a gas outlet, the bottom of the cylinder body is provided with a slag discharging port, the cylinder body is internally provided with a conical gas distribution plate, the gas distribution plate divides an inner cavity of the cylinder body into a reaction cavity positioned above the reaction cavity and a gas distribution cavity positioned below the reaction cavity, gas holes are distributed on the gas distribution plate, the cylinder body is provided with a gas inlet pipe communicated with the gas distribution cavity and the outside, the gas inlet pipe fills gas required by coal gasification reaction into the gas distribution cavity, the upper opening of the gas distribution plate is small in size, the upper opening of the gas distribution plate is circumferentially and hermetically connected on the inner wall of the cylinder body, the lower opening of the gas distribution plate is connected with a slag discharging pipe extending downwards, the slag discharging pipe penetrates through the slag discharging port and is circumferentially and hermetically connected with the slag discharging port, a central jet pipe is arranged in, and oxygen is injected into the gasification reaction area of the pulverized coal pile, a plurality of coal inlet pipes inserted into the gasification reaction area of the pulverized coal pile are arranged at the lower part of the cylinder, and the coal inlet pipes are positioned on the gas distribution plate or penetrate through the gas distribution cavity and the gas distribution plate.
As a preferable scheme, the coal inlet pipe faces to the central position of the gasification reaction zone of the coal dust pile.
As a preferable scheme, the gas distribution plate is provided with coal inlets which are in one-to-one correspondence with the coal inlet pipes, the coal inlet pipes penetrate through the gas distribution chamber and are in one-to-one correspondence with the coal inlets on the gas distribution plate, and the end parts of the coal inlet pipes do not extend out of the gas distribution plate.
Preferably, the coal inlet pipe is horizontally arranged, a blowing device for blowing gas into the coal inlet pipe is arranged on the coal inlet pipe, and the blowing device blows the coal as fired in the coal inlet pipe into the barrel body.
The utility model has the advantages that: the coal inlet pipe penetrates through the distribution plate or is arranged on the upper edge of the distribution plate, and the coal is directly conveyed to the central jet flow area of the cylinder body through the air flow, so that the coal as fired is closer to the central jet flow area to burn, and can enter a gasification reaction stage after burning, thereby greatly reducing the time that the coal as fired does not participate in the reaction in the furnace, and greatly improving the gasification efficiency of the whole fluidized bed gasification furnace.
The utility model discloses further through will advance coal pipe level setting to set up gas blowing device on advancing the coal pipe, utilize gas blowing device will go into the stove coal and blow in the barrel, one of them can utilize gas blowing device to promote the removal of stove coal in advancing the coal pipe, its two can bring into the burning that oxygen supplied the stove coal, help is gone into the quick combustion of stove coal and is heaied up, the resistance when its three level setting advance the coal pipe and can reduce as far as possible to buggy rolling cycle, reduce the resistance when the stove coal gets into the buggy heap.
Description of the drawings:
the following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a fluidized bed gasification furnace according to the present invention.
In fig. 1: 1. the device comprises a cylinder body, 1-1 parts of a reaction chamber, 1-2 parts of a gas distribution chamber, 2 parts of a gas outlet, 3 parts of a slag discharge port, 4 parts of a central jet pipe, 5 parts of a pulverized coal pile gasification reaction zone, 6 parts of a gas inlet pipe, 7 parts of a coal inlet pipe, 8 parts of a gas blowing device, 9 parts of a gas distribution plate, 10 parts of a slag discharge pipe, 11 parts of a gas hole, 12 parts of a gas pipe, 13 parts of a coal inlet.
The specific implementation mode is as follows:
the following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in figure 1, the fluidized bed gasification furnace capable of improving the coal gasification efficiency comprises a cylinder body 1, a gas outlet 2 is arranged at the top of the cylinder body 1, a slag discharging port 3 is arranged at the bottom of the cylinder body 1, a conical gas distribution plate 9 is arranged in the cylinder body 1, the gas distribution plate 9 divides the inner cavity of the cylinder body 1 into a reaction cavity 1-1 positioned above the reaction cavity and a gas distribution cavity 1-2 positioned below the reaction cavity, gas holes 11 are distributed on the gas distribution plate 9, a gas inlet pipe 6 communicated with the gas distribution cavity 1-2 and the outside is arranged on the cylinder body 1, the gas inlet pipe 6 fills gas required by the coal gasification reaction into the gas distribution cavity 1-2, the upper opening of the gas distribution plate 9 is small in size and small in opening, the upper opening of the gas distribution plate 9 is circumferentially and hermetically connected to the inner wall of the cylinder body 1, the lower opening is connected with a slag discharging pipe 10 extending downwards, the upper end of the central jet pipe 4 is positioned at the lower opening of the gas distribution plate 9, the lower part of the reaction chamber 1-1 is a pulverized coal reactor gasification reaction area 5, the central jet pipe 4 is positioned at the center of the bottom of the pulverized coal reactor gasification reaction area 5 and sprays oxygen into the pulverized coal reactor gasification reaction area 5, a plurality of coal inlets 13 are formed in the gas distribution plate 9, coal inlet pipes 7 which are in one-to-one correspondence with the coal inlets are arranged at the lower part of the cylinder 1, and the coal inlet pipes 7 penetrate through the gas distribution chamber 1-2 and are in one-to-one correspondence with the coal inlets in the gas distribution plate 9.
The coal inlet pipe 7 faces the central position of the coal powder pile gasification reaction zone 5. One end of the coal inlet pipe 7, which faces the central position of the coal powder pile gasification reaction zone 5, does not extend out of the gas distribution plate 9, so that the coal inlet pipe 7 cannot be abraded in the flowing process of the coal powder.
The coal inlet pipe 7 is horizontally arranged, the coal inlet pipe 7 is provided with a blowing device 8 for blowing gas into the coal inlet pipe 7, and the blowing device 8 blows the coal as fired in the coal inlet pipe 7 into the barrel 1.
The blowing device 8 can adopt a fan, the blowing device 8 can be communicated with the coal inlet pipe 7 through an air pipe 12, and the air pipe 12 is obliquely connected to the coal inlet pipe 7 and blows air towards the interior of the barrel 1.
In actual production, the coal inlet pipe 7 can also be arranged on the upper edge of the gas distribution plate 9, so that a coal inlet 13 does not need to be arranged on the gas distribution plate 9, the installation is simpler and more convenient, but the distance between the coal as fired and the center of the coal powder pile gasification reaction zone 5 is slightly longer, and the gasification efficiency is relatively reduced.
The utility model discloses the theory of operation is: as shown in figure 1, before the reaction of the fluidized bed gasification furnace, a coal inlet pipe 7 penetrates through a gas distribution plate 9 or is arranged at the upper edge of the gas distribution plate 9, the coal fed into the furnace is conveyed by air force to be close to the central position of a coal powder pile gasification reaction zone 5, oxygen and steam are blown into a cylinder 1 by a central jet pipe 4 to enable the central position of the coal powder pile to be continuously combusted, the coal powder combustion zone is the central jet area, the central jet pipe 4 drives the coal powder to circularly tumble and flow by the airflow power of the oxygen and the steam, the coal powder is enabled to continuously enter the central jet area for combustion and heating, meanwhile, the steam is injected into the cylinder 1 by an air inlet pipe 6, the high-temperature coal powder and the steam are subjected to gasification reaction, the coal fed into the central position of the coal powder pile gasification reaction zone 5 in the cylinder 1 is continuously blown according to needs in the gasification furnace reaction process, the coal fed directly enters the, and entering a gasification reaction stage.
The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (4)
1. A fluidized bed gasification furnace capable of improving coal gasification efficiency comprises a cylinder body (1), wherein a gas outlet (2) is formed in the top of the cylinder body (1), a slag discharge port (3) is formed in the bottom of the cylinder body (1), a conical gas distribution plate (9) is arranged in the cylinder body (1), the inner cavity of the cylinder body (1) is divided into a reaction cavity (1-1) positioned above the gas distribution plate and a gas distribution cavity (1-2) positioned below the reaction cavity by the gas distribution plate (9), gas holes (11) are distributed in the gas distribution plate (9), a gas inlet pipe (6) communicated with the gas distribution cavity (1-2) and the outside is arranged on the cylinder body (1), the gas inlet pipe (6) fills gas required for coal gasification reaction into the gas distribution cavity (1-2), the upper opening of the gas distribution plate (9) is small in size, the upper opening of the gas distribution plate (9) is circumferentially and hermetically connected to, the coal dust reactor is characterized in that a plurality of coal inlet pipes (7) inserted into the coal dust reactor gasification reaction area (5) are arranged at the lower part of the cylinder body (1), and the coal inlet pipes (7) are positioned on the upper edge of the gas distribution plate (9) or penetrate through the gas distribution chamber (1-2) and the gas distribution plate (9).
2. The fluidized-bed gasification furnace capable of improving coal gasification efficiency according to claim 1, wherein the coal inlet pipe (7) is oriented to the central position of the gasification reaction zone (5) of the pulverized coal pile.
3. The fluidized bed gasification furnace capable of improving coal gasification efficiency according to claim 2, wherein the gas distribution plate (9) is provided with coal inlets (13) corresponding to the coal inlet pipes (7) one by one, the coal inlet pipes (7) penetrate through the gas distribution chamber (1-2) and are connected with the coal inlets (13) of the gas distribution plate (9) one by one, and the end parts of the coal inlet pipes (7) do not extend out of the gas distribution plate (9).
4. The fluidized bed gasification furnace capable of improving coal gasification efficiency according to claim 1, wherein the coal inlet pipe (7) is horizontally arranged, a blowing device (8) for blowing gas into the coal inlet pipe (7) is arranged on the coal inlet pipe (7), and the blowing device (8) blows the coal as fired in the coal inlet pipe (7) into the cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920125357.0U CN209816043U (en) | 2019-01-24 | 2019-01-24 | Fluidized bed gasification furnace capable of improving coal gasification efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920125357.0U CN209816043U (en) | 2019-01-24 | 2019-01-24 | Fluidized bed gasification furnace capable of improving coal gasification efficiency |
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| CN209816043U true CN209816043U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920125357.0U Active CN209816043U (en) | 2019-01-24 | 2019-01-24 | Fluidized bed gasification furnace capable of improving coal gasification efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628153A (en) * | 2019-01-24 | 2019-04-16 | 江苏普格机械有限公司 | The method and fluidized-bed gasification furnace of coal gasification efficiency can be improved |
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2019
- 2019-01-24 CN CN201920125357.0U patent/CN209816043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628153A (en) * | 2019-01-24 | 2019-04-16 | 江苏普格机械有限公司 | The method and fluidized-bed gasification furnace of coal gasification efficiency can be improved |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215600 HAIBA Road, Daxin Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: China National Chemical Equipment Technology (Suzhou) Co.,Ltd. Country or region after: China Address before: 215600 Jiangsu Puge Machinery Co., Ltd., HAIBA Road, Daxin Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: JIANGSU PUGE MACHINERY Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |