CN213624011U - Anti-slagging device of fluidized bed gasification furnace and anti-slagging fluidized bed gasification furnace - Google Patents
Anti-slagging device of fluidized bed gasification furnace and anti-slagging fluidized bed gasification furnace Download PDFInfo
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- CN213624011U CN213624011U CN202022037576.9U CN202022037576U CN213624011U CN 213624011 U CN213624011 U CN 213624011U CN 202022037576 U CN202022037576 U CN 202022037576U CN 213624011 U CN213624011 U CN 213624011U
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- slag
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- gasification furnace
- connecting pipe
- pipe
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- 238000002309 gasification Methods 0.000 title claims abstract description 61
- 230000002265 prevention Effects 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims description 45
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model aims at providing a slag-bonding prevention device of a fluidized bed gasification furnace and the slag-bonding prevention fluidized bed gasification furnace, which comprises an air inlet pipe, a connecting pipe, an arc-shaped pipe and a blast cap; the tail end of the air inlet pipe is connected with a connecting pipe, the air inlet pipe and the connecting pipe are both horizontally arranged, and the axes of the air inlet pipe and the connecting pipe are superposed; a plurality of groups of arc pipes are respectively and uniformly arranged on the connecting pipe at intervals along the axial direction of the connecting pipe, the two sides of each group of arc pipes extend towards the two sides by taking the connecting pipe as a boundary, the arc pipes are symmetrical by taking the connecting pipe as a boundary, and the circle centers of the arc pipes of each group are superposed; the top surface of the arc-shaped pipe is provided with a plurality of air holes at intervals along the radian axial direction, and an air cap is arranged above each air hole. The device has the characteristics of reasonable structure and good slagging-proof effect.
Description
Technical Field
The utility model relates to an auxiliary device field of fluidized bed, concretely relates to fluidized bed gasifier prevents slagging scorification device and prevents slagging scorification fluidized bed gasifier.
Background
As a 'tap' of coal chemical industry, the coal gasification technology is the basis of the coal chemical industry, and synthetic gas generated by coal gasification is an indispensable raw material in the industries of chemical industry, metallurgy, power generation, fuel gas and the like. According to the coal gasification process, it can be divided into fixed bed gasification, fluidized bed gasification and entrained flow bed gasification. The fluidized bed gasification technology is a clean and efficient coal conversion technology and is one of the earliest industrialized gasification technologies. The fluidized bed gasification technology has strong stability and wide raw material application range, and crushed coal with the particle size of 0 mm-6 mm is used as the raw material, so that the current resource situation that high-quality lump coal resources are gradually reduced can be relieved. The fluidized bed gasification technology has high gasification efficiency, less investment and quick effect, and is particularly suitable for small and medium-sized enterprises which take crushed coal as raw material to produce synthesis gas.
The existing fluidized bed gasification furnace device has the following defects:
(1) in the normal operation process, the bottom slag at the bottom of the fluidized bed has poor fluidity, and is easy to slag in the slag discharging process;
(2) after the furnace is stopped, the high-temperature bed materials are gathered at the bottom of the gasification furnace, and heat is conducted and gathered at the bottom slag below the blast cap, so that large-area slagging is easily caused;
(3) the carbon content of the bottom slag generated by gasification is high, and particularly for the coal types with high coalification degree, the carbon content of the gasified bottom slag is even higher than 15%.
Disclosure of Invention
The utility model aims at providing a fluidized bed gasifier prevent slagging scorification device and prevent slagging scorification fluidized bed gasifier, the device overcomes prior art defect, has rational in infrastructure, prevents the effectual characteristics of slagging scorification.
The technical scheme of the utility model as follows: a slag-bonding prevention device of a fluidized bed gasification furnace comprises an air inlet pipe, a connecting pipe, an arc-shaped pipe and a blast cap;
the tail end of the air inlet pipe is connected with a connecting pipe, the air inlet pipe and the connecting pipe are both horizontally arranged, and the axes of the air inlet pipe and the connecting pipe are superposed; a plurality of groups of arc pipes are respectively and uniformly arranged on the connecting pipe at intervals along the axial direction of the connecting pipe, the two sides of each group of arc pipes extend towards the two sides by taking the connecting pipe as a boundary, the arc pipes are symmetrical by taking the connecting pipe as a boundary, and the circle centers of the arc pipes of each group are superposed; the top surface of the arc-shaped pipe is provided with a plurality of air holes at intervals along the radian axial direction, and an air cap is arranged above each air hole.
Preferably, both sides of the arc tube are inclined downward.
Preferably, the included angle between the two sides of the arc-shaped pipe and the horizontal direction is 1-1.5 times of the repose angle of the bottom slag at the bottom of the gasification furnace.
Preferably, an additional hole is arranged at the joint of the connecting pipe and the arc pipe, and an additional cap is arranged on the additional hole.
Preferably, the hood is arranged in a vertical direction.
Preferably, 3-5 arc pipes are arranged.
The utility model also provides a slag-bonding prevention fluidized bed gasification furnace, which applies the slag-bonding prevention device and also comprises a furnace body, a slag discharge port and a gasification agent inlet;
the two slag discharging openings are respectively arranged on a gasification furnace bottom plate at the bottom of the furnace body and positioned at two sides of the bottom of the furnace body on the same diameter; the gasification agent inlet is arranged at the center of the top of the furnace body; the two anti-slagging structures are oppositely arranged and are symmetrical with each other by taking the central connecting line of the two slag outlets as a boundary; the circle centers of the arc-shaped pipes on the two groups of slag bonding prevention devices are superposed and are positioned on the axis of the gasification furnace.
Preferably, the front ends of the two sides of the arc-shaped pipe are provided with support legs in the vertical direction, and the bottoms of the support legs are fixedly connected with the gasification furnace bottom plate.
The working process of the utility model is as follows:
when the anti-slagging device of the fluidized bed gasification furnace works, high-pressure steam or inert gas is conveyed to the arc-shaped pipe through the air inlet pipe and the connecting pipe, and then is guided out through the blast cap to enter the bottom of the gasification furnace.
The medium passing through the anti-slagging device of the utility model is high pressure vapor, and the medium enters the slag dredging and anti-slagging device from the air inlet, is led out from each hood and enters the fluidized bed, thereby fluidizing the bottom slag and increasing the fluidity of the bottom slag, and realizing the anti-slagging function;
the utility model leads in steam to the bottom of the gasification furnace through the arc-shaped pipe, so that the bottom slag is fluidized, the fluidity of the bottom slag is increased, and the bottom slag far away from the slag discharge pipe is moved to the slag discharge pipe, thereby preventing the generation of local slag bonding caused by the poor fluidity of the bottom slag in the slag discharge process;
when the fluidized bed gasification furnace is shut down, the introduced steam can effectively reduce the temperature of the bottom slag, and the heat of the high-temperature bed material is conducted out, so that the heat of the high-temperature bed material is prevented from being conducted to the bottom slag, and the bottom slag is prevented from being caked in a large area;
moreover, the water vapor and the carbon-containing bottom slag have secondary gasification effect to reduce the carbon content of the bottom slag, and the water vapor and the bottom slag form a local dense medium fluidized bed at the bottom of the furnace to strengthen the layering of the bottom slag according to density, promote the low-density bottom slag with high carbon content to rise to the upper part of the bottom slag and react with a gasifying agent again, greatly reduce the carbon content of the bottom slag and improve the coal gasification efficiency and the gas production rate;
the arc-shaped structure can uniformly disperse the water vapor to the bottom of the gasification furnace, so that the dispersion range of the water vapor is improved, the range of a gasification agent inlet can be avoided through the arc-shaped structure, and the influence of the water vapor on the gasification agent is avoided; meanwhile, the inclined structure at the tail end of the arc-shaped pipe can be matched with the shape of the bottom slag accumulation, and the water vapor can better cover the bottom slag due to the arrangement of the oblique cutting angle;
the additional hole and the additional cap structure at the joint of the connecting pipe and the arc-shaped pipe increase the coverage area of the water vapor and improve the action effect of the water vapor;
the supporting leg structure improves the stability of the arc-shaped pipe, prolongs the service life of the device and reduces the maintenance cost.
Drawings
FIG. 1 is a top view of a slag-bonding preventing device of a fluidized bed gasification furnace according to the present invention;
FIG. 2 is a side view of the slag-bonding preventing device of the fluidized bed gasification furnace provided by the present invention;
1 is a slag discharge port, 2 is a gasification agent inlet, 3 is a gasification furnace bottom plate, 4 is an air inlet pipe, 5 is a connecting pipe, 6 is an arc-shaped pipe, 7 is a blast cap, 8 is an additional hole, and 9 is an additional cap.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-2, the slag-deposit preventing device of a fluidized bed gasifier provided in this embodiment includes an air inlet pipe 4, a connecting pipe 5, an arc pipe 6, and a hood 7;
the tail end of the air inlet pipe 4 is connected with a connecting pipe 5, the air inlet pipe 4 and the connecting pipe 5 are both horizontally arranged, and the axes of the air inlet pipe 4 and the connecting pipe 5 are superposed; a plurality of groups of arc pipes 6 are respectively and uniformly arranged on the connecting pipe 5 at intervals along the axial direction of the connecting pipe, two sides of each group of arc pipes 6 extend towards two sides by taking the connecting pipe 5 as a boundary, the two sides are symmetrical with each other by taking the connecting pipe 5 as a boundary, and the circle centers of the arc pipes 6 of each group are superposed; a plurality of air holes are uniformly formed in the top surface of the arc-shaped pipe 6 along the radian axial direction at intervals, and an air cap 7 is arranged above each air hole;
two sides of the arc-shaped pipe 6 are inclined downwards;
the included angle between the two side parts of the arc-shaped pipe 6 and the horizontal direction is 1.5 times of the repose angle of the bottom slag at the bottom of the gasification furnace;
an additional hole 8 is formed at the joint of the connecting pipe 5 and the arc-shaped pipe 6, and an additional cap 9 is arranged on the additional hole 8;
the blast cap 7 is arranged in the vertical direction;
3 arc-shaped pipes 6 are arranged;
the slag-bonding prevention fluidized bed gasification furnace provided by the embodiment applies the slag-bonding prevention device, and further comprises a furnace body, a slag discharge port 1 and a gasifying agent inlet 2;
the two slag discharging openings 1 are respectively arranged on a gasification furnace bottom plate 3 at the bottom of the furnace body and are positioned at two sides of the bottom of the furnace body on the same diameter; the gasification agent inlet 2 is arranged at the center of the top of the furnace body; the two anti-slagging structures are oppositely arranged and are symmetrical with each other by taking the central connecting line of the two slag outlets 1 as a boundary; the circle centers of the arc-shaped pipes 6 on the two groups of slag bonding prevention devices are superposed and are positioned on the axis of the gasification furnace;
the front ends of the two sides of the arc-shaped pipe 6 are provided with supporting legs in the vertical direction, and the bottoms of the supporting legs are fixedly connected with the gasification furnace bottom plate 3.
The working process of the utility model is as follows:
when the anti-slagging device of the fluidized bed gasification furnace works, high-pressure steam or inert gas is conveyed to the arc-shaped pipe through the air inlet pipe and the connecting pipe, and then is guided out through the blast cap to enter the bottom of the gasification furnace.
Claims (8)
1. The utility model provides a fluidized bed gasifier prevent slagging scorification device, includes intake pipe (4), connecting pipe (5), arc (6), hood (7), its characterized in that:
the tail end of the air inlet pipe (4) is connected with a connecting pipe (5), the air inlet pipe (4) and the connecting pipe (5) are both horizontally arranged, and the axes of the air inlet pipe and the connecting pipe coincide; a plurality of groups of arc pipes (6) are respectively and uniformly arranged on the connecting pipe (5) at intervals along the axial direction of the connecting pipe, the two sides of each group of arc pipes (6) extend towards the two sides by taking the connecting pipe (5) as a boundary, the two sides are symmetrical with each other by taking the connecting pipe (5) as a boundary, and the circle centers of the arc pipes (6) of each group are superposed; the top surface of the arc-shaped pipe (6) is provided with a plurality of air holes at intervals along the radian axial direction, and an air cap (7) is arranged above each air hole.
2. The slag-deposit preventing device of a fluidized-bed gasification furnace according to claim 1, characterized in that:
the two sides of the arc-shaped pipe (6) are inclined downwards.
3. The slag-deposit preventing device of a fluidized-bed gasification furnace according to claim 2, characterized in that:
the included angle between the two sides of the arc-shaped pipe and the horizontal direction is 1-1.5 times of the repose angle of the bottom slag at the bottom of the gasification furnace.
4. The slag-deposit preventing device of a fluidized-bed gasification furnace according to claim 1, characterized in that:
an additional hole (8) is formed at the joint of the connecting pipe (5) and the arc-shaped pipe (6), and an additional cap (9) is arranged on the additional hole (8).
5. The slag-deposit preventing device of a fluidized-bed gasification furnace according to claim 1, characterized in that:
the blast cap (7) is arranged in the vertical direction.
6. The slag-deposit preventing device of a fluidized-bed gasification furnace according to claim 1, characterized in that:
3-5 arc-shaped pipes (6) are arranged.
7. A slag-bonding prevention fluidized bed gasification furnace, which applies the slag-bonding prevention device as in any one of claims 1 to 6, and further comprises a furnace body, a slag discharge port (1) and a gasifying agent inlet (2), and is characterized in that:
the two slag discharging openings (1) are respectively arranged on a gasification furnace bottom plate (3) at the bottom of the furnace body and are positioned at two sides of the bottom of the furnace body on the same diameter; the gasification agent inlet (2) is arranged at the center of the top of the furnace body; the two sets of anti-slagging structures are oppositely arranged and are symmetrical with each other by taking the central connecting line of the two slag discharging ports (1) as a boundary; the circle centers of the arc-shaped pipes (6) on the two groups of slag bonding prevention devices are superposed and are positioned on the axis of the gasification furnace.
8. The slagging-preventing fluidized-bed gasification furnace according to claim 7, wherein:
the front ends of the two sides of the arc-shaped pipe (6) are provided with supporting legs in the vertical direction, and the bottoms of the supporting legs are fixedly connected with the gasification furnace bottom plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022037576.9U CN213624011U (en) | 2020-09-17 | 2020-09-17 | Anti-slagging device of fluidized bed gasification furnace and anti-slagging fluidized bed gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022037576.9U CN213624011U (en) | 2020-09-17 | 2020-09-17 | Anti-slagging device of fluidized bed gasification furnace and anti-slagging fluidized bed gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213624011U true CN213624011U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022037576.9U Active CN213624011U (en) | 2020-09-17 | 2020-09-17 | Anti-slagging device of fluidized bed gasification furnace and anti-slagging fluidized bed gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213624011U (en) |
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2020
- 2020-09-17 CN CN202022037576.9U patent/CN213624011U/en active Active
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