CN114383147A - Jacket multi-tube type combustor, combustor prying block and ground torch - Google Patents

Jacket multi-tube type combustor, combustor prying block and ground torch Download PDF

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Publication number
CN114383147A
CN114383147A CN202210101295.6A CN202210101295A CN114383147A CN 114383147 A CN114383147 A CN 114383147A CN 202210101295 A CN202210101295 A CN 202210101295A CN 114383147 A CN114383147 A CN 114383147A
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China
Prior art keywords
tube
pipe
burner
gas
inner pipe
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CN202210101295.6A
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Chinese (zh)
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周瑞敏
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Individual
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Priority to CN202210101295.6A priority Critical patent/CN114383147A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
    • F23G7/085—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention provides a jacket multi-tube type burner, a burner prying block and a ground torch, which comprise: the lower end of the inner pipe is provided with a first air inlet, and the upper end of the inner pipe is provided with a first air outlet; the outer pipe is sleeved outside the inner pipe, at least one exhaust air cavity is formed outside the inner pipe, the lower part of each exhaust air cavity is provided with an air inlet, and the upper part of each exhaust air cavity is provided with an air outlet; the gas outlet is communicated with the first gas outlet; this press from both sides cover multitube combustor adopts the structure that sets up at least one outer tube in the outside of the tube, and the inside cavity of inner tube and the outside discharge air cavity of inner tube can be used for discharging different types of waste gas respectively, can once only handle different types of waste gas through the burning, not only improves the treatment effect, can also save the working costs, improves the waste gas burn-off rate.

Description

Jacket multi-tube type combustor, combustor prying block and ground torch
Technical Field
The invention belongs to the technical field of combustors, and particularly relates to a jacket multi-tube combustor, a combustor prying block and a ground torch.
Background
Chemical devices in petrochemical industry, coal chemical industry and the like generate a large amount of combustible harmful waste gas in the production process, and the combustible harmful gas needs to be discharged into the atmosphere after being combusted and treated by a closed ground flare device, a multi-point ground flare device and the like. The components of different waste gases have different weights and pressures, and the existing ground flare device has a plurality of flare burners, which generally comprise hundreds to thousands of burners. The existing torch burner has the problems of high noise, incomplete combustion of heavy components, large occupied area, long flame, high steam consumption, environment pollution, high investment and production running cost and the like due to the generation of a large amount of black smoke during combustion.
Disclosure of Invention
The invention aims to provide a jacket multi-tube type burner, a burner prying block and a ground torch aiming at the defects in the prior art, the jacket multi-tube type burner adopts a structure that at least one outer tube is arranged outside an inner tube, an inner cavity of the inner tube and a discharge air cavity outside the inner tube can be respectively used for discharging different types of waste gas, different types of waste gas can be treated by combustion once, the treatment effect is improved, and the operation cost can be saved.
In order to achieve the above object, the present invention provides a jacketed multi-tube burner comprising:
the lower end of the inner pipe is provided with a first air inlet, and the upper end of the inner pipe is provided with a first air outlet;
the outer pipe is sleeved outside the inner pipe, at least one exhaust air cavity is formed outside the inner pipe, the lower part of each exhaust air cavity is provided with an air inlet, and the upper part of each exhaust air cavity is provided with an air outlet;
the gas outlet is communicated with the first gas outlet.
Optionally, the outer pipe is provided with a plurality of outer pipes, the diameters of the outer pipes are increased progressively and the outer pipes are sequentially sleeved on the outer side of the inner pipe, a plurality of exhaust air cavities are formed from inside to outside, and the exhaust air cavities respectively exhaust a plurality of different types of gas.
Optionally, the lower end of the inner tube is provided with a first bell mouth.
Optionally, a second bell mouth is arranged on the gas inlet of one of the outer tubes.
Optionally, the length of the outer pipe at the inner layer is smaller than that of the outer pipe at the outer layer, the upper ends of the outer pipe and the inner pipe are flush, and a burner nozzle is formed above the outer pipe and the inner pipe.
Optionally, a spoiler is arranged at the burner nozzle.
Optionally, the side wall of the upper part of the outermost outer tube is provided with a combustible waste gas spray hole, and a swirl plate matched with the combustible waste gas spray hole is arranged in the discharge air cavity.
The present invention also provides a burner skid, the skid comprising:
the jacket multi-tube burner is provided with a plurality of jacket multi-tube burners;
and the gas pipeline is connected with a plurality of the jacket multi-tube type burners.
Optionally, a plurality of the jacketed multi-tube burners are arranged in an array; the lower end of the inner pipe is provided with a first bell mouth; the gas pipeline comprises an inner pipe gas pipe and an outer pipe gas pipe, the inner pipe gas pipe is inserted in the first bell mouth, and the outer pipe gas pipe is connected with the gas inlet.
The invention also provides a ground torch which comprises the combustor pry block.
The invention provides a jacket multi-tube type burner, a burner prying block and a ground torch, which have the beneficial effects that:
1. the jacket multi-tube type combustor adopts a structure that at least one outer tube is arranged on the outer side of an inner tube, an inner cavity of the inner tube and an exhaust air cavity outside the inner tube can be respectively used for exhausting different types (different components and different pressures) of waste gas, different types of waste gas can be treated through combustion once, the treatment effect is improved, and the operation cost can be saved;
2. the jacket multi-tube burner can adopt a combined burner with a plurality of independent discharge air cavities according to the actual discharge condition, can treat waste gases with different characteristics such as high calorific value, low calorific value, high pressure, low pressure and the like, particularly, the high calorific value waste gases can ignite and burn non-combustible harmful gases with low calorific value, the energy consumption of co-combustion of natural gas or petroleum liquefied gas when the low calorific value gases and the non-combustible harmful gases are discharged is reduced, and the operation cost is reduced;
3. the jacket multi-tube burner can respectively carry out centralized and public combustion treatment on waste gas with various discharge pressures and different heat value working conditions of various components, thereby greatly saving the occupied area, saving the land resources and reducing the investment;
4. the jacket multi-tube burner can realize that the combination of dischargers under different working conditions concentrates on one burner pry block to control emission combustion, can realize single control under different working conditions or multiple control emission combustion, and reduces investment cost and operation cost.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 is a schematic front view of a jacketed multi-tube burner according to a first embodiment of the present invention.
Fig. 2 shows a schematic top view of a jacketed multi-tube burner according to a first embodiment of the invention.
FIG. 3 illustrates a schematic top view of a combustor sled according to a first embodiment of the present invention.
FIG. 4 illustrates a side view schematic diagram of a combustor sled according to a first embodiment of the present invention.
Fig. 5 shows a schematic top view of a burner sled according to a second embodiment of the present invention.
Fig. 6 shows a schematic top view of a burner pry block according to a third embodiment of the invention.
Description of reference numerals:
1. an inner tube; 2. an outer tube; 3. a first bell mouth; 4. a second bell mouth; 5. a spoiler; 6. combustible waste gas is sprayed out; 7. a spinning disk; 8. a first exhaust gas pipe; 9. a second exhaust gas pipe; 10. a third waste gas pipe; 11. a fourth exhaust gas pipe; 12. a branch pipe; 13. a first discharge air chamber; 14. a second discharge air chamber; 15. a third discharge air chamber; 16. a fourth discharge air chamber; 17. a standpipe of the first exhaust conduit; 18. a cross pipe of the first exhaust pipe; 19. a first gas inlet; 20. a standpipe of the second exhaust conduit; 21. a cross pipe of the second exhaust pipe; 22. a second gas inlet; 23. a standpipe of a third waste gas pipe; 24. a third waste gas pipe; 25. a third gas inlet; 26. a standpipe of a fourth exhaust conduit; 27. a cross pipe of a fourth exhaust pipe; 28. a fourth gas inlet.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The present invention provides a jacketed multi-tube burner, comprising:
the lower end of the inner pipe is provided with a first air inlet, and the upper end of the inner pipe is provided with a first air outlet;
the outer pipe is sleeved outside the inner pipe, at least one exhaust air cavity is formed outside the inner pipe, the lower part of each exhaust air cavity is provided with an air inlet, and the upper part of each exhaust air cavity is provided with an air outlet;
the gas outlet is communicated with the first gas outlet.
Specifically, the jacket multi-tube type combustor adopts a structure that at least one outer tube is arranged on the outer side of an inner tube, an inner cavity of the inner tube and an exhaust air cavity outside the inner tube can be respectively used for exhausting different types of waste gas, and different types of waste gas can be treated through combustion once, so that the treatment effect is improved, and the operating cost can be saved; the number of the outer pipes can be designed according to the types of waste gases such as different components, different pressures and the like of the waste gases; in one example, the waste gas is divided into high-pressure high-heat value waste gas and low-pressure low-heat value waste gas, then two outer pipes can be arranged, two exhaust air cavities are formed outside the inner pipe, the two exhaust air cavities respectively exhaust the two waste gases, and air and steam can be introduced into the inner pipe; the smooth proceeding of combustion is ensured, so that the centralized treatment of different types of waste gas is realized, the high-heat-value waste gas can be used for igniting and combusting the low-heat-value non-combustible waste gas, the energy consumption of co-combustion of natural gas or liquefied petroleum gas when the low-heat-value gas and the non-combustible harmful gas are discharged is reduced, and the operating cost is reduced; of course, if the exhaust gas contains a sufficient amount of air, the inner pipe may also be fed with an exhaust gas or steam.
Optionally, the outer pipe is provided with a plurality of, and the diameter of a plurality of outer pipes increases progressively and overlaps in proper order and establish in the outside of inner tube, forms a plurality of discharge air cavities from inside to outside, and a plurality of discharge air cavities discharge a plurality of different kinds of gas respectively.
Specifically, more than three outer pipes form more than three discharge air cavities on the outer sides of the inner pipes, and the device has more remarkable beneficial effects in practical application.
Optionally, the lower end of the inner tube is provided with a first flare.
Specifically, during the practical application, still include the steam pipe, the steam pipe is used for discharging steam, and the one end of steam pipe is inserted and is established in first bellmouth, can be to intraductal discharge steam of inner tube to, because the existence of first bellmouth, form venturi effect here, can bring in a large amount of air in the intraductal when discharging steam, guarantee this and press from both sides the normal combustion of cover multitubular combustor.
Optionally, a second flare is provided on the gas inlet on one of the outer tubes.
Specifically, when the number of the outer pipes is large, and the number of the exhaust air cavities is large, the problem of insufficient air quantity is considered, a second bell mouth can be arranged on an air inlet on one of the outer pipes, the steam pipe is also inserted in the second bell mouth, air is brought into the exhaust air cavities by utilizing the Venturi tube principle, and the sufficiency of the air during combustion is ensured.
In one example, if the exhaust gas is heavy combustible gas, a large amount of black smoke is generated in the combustion process, and steam or air is respectively introduced into the first bell mouth and the second bell mouth.
Alternatively, the outer tube at the inner layer has a length less than the outer tube at the outer layer, the upper ends of the outer and inner tubes being flush, forming a burner port above the outer and inner tubes.
Specifically, a gas inlet is formed in the part of the innermost outer tube exposed out of the adjacent outer tube, a connecting tube can be arranged on the gas inlet, and a connecting flange is arranged at the outer end of the connecting tube; similarly, the outer wall of the lower part of each outer pipe can be provided with a gas inlet, and a corresponding connecting pipe and a corresponding connecting flange are arranged, so that the outer pipe is conveniently connected with a waste gas pipeline; in one example, the outer tube has a plurality of lower ends which become shorter in order from the inside to the outside.
Further, the exhaust gas is ejected through the burner ports and combusted by ignition of the igniter.
Optionally, a spoiler is provided at the burner nozzle.
Specifically, the setting of spoiler can change the gas direction, prevents at the combustion instability.
Optionally, the sidewall of the upper part of the outermost outer tube is provided with a combustible waste gas spray hole, and a swirl plate matched with the combustible waste gas spray hole is arranged in the discharge air cavity.
Specifically, the combustible waste gas jet holes can flow out combustible waste gas from the jet holes for combustion, and the jet holes can be circular holes, rectangular holes, dragging circular holes and the like; the spinning disk can change gas and air and spout to the single direction, according to the angle blowout of spinning disk, gas and air intensive mixing burning.
The present invention also provides a burner skid, the skid comprising:
in the jacket multi-tube burner, a plurality of jacket multi-tube burners are provided;
and the gas pipeline is connected with the plurality of jacket multi-tube type burners.
Specifically, gas line includes the standpipe and violently manages, and the standpipe can connect the exhaust emission pipeline, violently is provided with a plurality of branch pipes on the pipe, and the branch pipe can connect and press from both sides cover multitubular combustor, all can set up rather than corresponding control system on every standpipe, and control system can control the cover multitubular combustor spun combustible waste gas that presss from both sides that is connected with it.
Optionally, the plurality of jacketed multitubular burners are arranged in an array; the lower end of the inner pipe is provided with a first bell mouth; the gas pipeline comprises an inner pipe gas pipe and an outer pipe gas pipe, the inner pipe gas pipe is inserted in the first bell mouth, and the outer pipe gas pipe is connected with the gas inlet.
The multi-tube burner is provided with a first bell mouth and a second bell mouth, and the steam, the air tube and the high-pressure gas tube are independently inserted into the corresponding bell mouths.
In one example, the inner pipe gas pipe carries steam and the outer pipe gas pipe carries waste flammable gas.
The invention also provides a ground torch which comprises the combustor pry block.
Example one
As shown in fig. 1 to 4, the present invention provides a jacketed multi-tube burner, comprising:
the air conditioner comprises an inner pipe 1, wherein a first air inlet is formed in the lower end of the inner pipe 1, and a first air outlet is formed in the upper end of the inner pipe 1;
the outer pipe 2 is sleeved on the outer side of the inner pipe 1, at least one exhaust air cavity is formed on the outer side of the inner pipe 1, a gas inlet is formed in the lower part of each exhaust air cavity, and a gas outlet is formed in the upper part of each exhaust air cavity;
the gas outlet is communicated with the first gas outlet.
In this embodiment, the outer tube 2 is provided with 4, and 4 diameters of the outer tube 2 increase progressively and overlap in proper order and establish in the outside of inner tube 1, form 4 discharge air cavities from inside to outside, and 4 discharge air cavities discharge 4 different types of gas respectively.
In the present embodiment, the lower end of the inner tube 1 is provided with a first bell mouth 3.
In this embodiment, a second flare 4 is provided on the gas inlet of one of the outer tubes 2.
In the present embodiment, the length of the outer tube 2 at the inner layer is smaller than the length of the outer tube 2 at the outer layer, the upper ends of the outer tube 2 and the inner tube 1 are flush, and a burner port is formed above the outer tube 2 and the inner tube 1.
In the present embodiment, a spoiler 5 is provided at the burner nozzle.
In this embodiment, the lateral wall of the upper part of the outermost outer tube 2 is provided with a combustible waste gas jet orifice 6, and a swirl plate 7 matched with the combustible waste gas jet orifice 6 is arranged in the discharge air cavity.
The present invention also provides a burner skid, the skid comprising:
in the jacket multi-tube burner, a plurality of jacket multi-tube burners are provided;
and the gas pipeline is connected with the plurality of jacket multi-tube type burners.
In this embodiment, a plurality of jacketed multitubular burners are arranged in a circumferential array; the lower end of the inner tube is provided with a first bell mouth 3; the gas pipeline comprises an inner pipe gas pipe and an outer pipe gas pipe, the inner pipe gas pipe is inserted in the first bell mouth 3, and the outer pipe gas pipe is connected with the gas inlet.
The invention also provides a ground torch which comprises the combustor pry block.
In summary, when the jacket multi-tube burner provided by the invention is used, one burner skid is taken as an example:
this gas pipeline of combustor sled piece includes first exhaust gas pipe 8, second exhaust gas pipe 9, third exhaust gas pipe 10, fourth exhaust gas pipe 11, and first exhaust gas pipe 8, second exhaust gas pipe 9, third exhaust gas pipe 10, fourth exhaust gas pipe 11 are the waste gas delivery pipe or the steam delivery pipe of different pressure or different light and heavy components, and every exhaust gas pipe includes the standpipe and violently manages, all is connected with a plurality of branch pipes 12 on every violently managing, and branch pipe 12 is used for being connected with every jacket multitubular combustor. The jacket multi-tube type burner comprises a first exhaust air cavity 13, a second exhaust air cavity 14, a third exhaust air cavity 15 and a fourth exhaust air cavity 16 from inside to outside, wherein a first waste gas pipe 8 is connected to a waste gas discharge pipeline of a chemical device through a vertical pipe 17 of the first waste gas pipe, and is sequentially connected with a first gas inlet 19 and the first exhaust air cavity 13 on the first exhaust air cavity 13 through a branch pipe 12 on a transverse pipe 18 of the first waste gas pipe, so that waste gas can be discharged to a burner nozzle to be sprayed and combusted; the second exhaust gas pipe 9 is connected to an exhaust gas pipeline of another chemical device through a vertical pipe 20 of the second exhaust gas pipe, and is sequentially connected with a second gas inlet 22 on the second exhaust gas cavity 14 and the second exhaust gas cavity 14 through a branch pipe 12 on a horizontal pipe 21 of the second exhaust gas pipe, so that the exhaust gas can be discharged to a burner nozzle to be sprayed and combusted; the third waste gas pipe 10 is connected to a steam discharge pipeline of a chemical device through a vertical pipe 23 of the third waste gas pipe, and is sequentially connected with the second bell mouth 4, the third gas inlet 25 and the third discharge gas cavity 15 through a branch pipe 12 on a horizontal pipe 24 of the third waste gas pipe, so that steam can be discharged to a burner nozzle, a certain amount of air is brought into the third discharge gas cavity 15 by using the venturi tube principle, and the combustion of heavy component waste gas is facilitated to be sufficient; the fourth exhaust gas pipe 11 is connected to another chemical device exhaust gas pipeline through a vertical pipe 26 of the fourth exhaust gas pipe, and is sequentially connected with a fourth gas inlet 28 on the fourth exhaust gas cavity 16 and the fourth exhaust gas cavity 16 through branch pipes on a horizontal pipe 27 of the fourth exhaust gas pipe, so that the exhaust gas can be discharged to a burner nozzle to be sprayed and combusted; meanwhile, the branch pipe 12 on the transverse pipe 24 of the third waste gas pipe can be inserted into the first bell mouth 3 to discharge steam into the inner pipe 1, and a certain amount of air is brought into the inner pipe 1 by utilizing the Venturi tube principle to ensure the combustion of the waste gas at the nozzle of the combustor.
Example two
As shown in fig. 5, the combustor pry block in the present embodiment differs from the first embodiment in that:
in this embodiment, the plurality of jacketed multitubular burners are arranged in a rectangular array.
Specifically, the arrangement form of a plurality of jacket multi-tube combustors in the combustor skid block can be selected according to actual working conditions.
EXAMPLE III
As shown in fig. 6, the combustor pry block in the present embodiment differs from the first embodiment in that:
in this embodiment, the plurality of jacketed multi-tube burners are arranged in a non-rectangular array, and the horizontal tubes are arranged in a U-shape.
Specifically, the arrangement form of a plurality of jacket multi-tube combustors in the combustor skid block and the arrangement form of the gas pipeline can be selected according to actual working conditions.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. A jacketed multi-tube burner, the burner comprising:
the lower end of the inner pipe is provided with a first air inlet, and the upper end of the inner pipe is provided with a first air outlet;
the outer pipe is sleeved outside the inner pipe, at least one exhaust air cavity is formed outside the inner pipe, the lower part of each exhaust air cavity is provided with an air inlet, and the upper part of each exhaust air cavity is provided with an air outlet;
the gas outlet is communicated with the first gas outlet.
2. The jacketed multi-tube burner according to claim 1, wherein the outer tube is provided in plural, the plural outer tubes are gradually increased in diameter and sequentially fitted over the outer side of the inner tube, and a plurality of discharge air chambers are formed from the inside to the outside, and the plural discharge air chambers discharge a plurality of different kinds of gases, respectively.
3. The jacketed multi-tube burner of claim 1, wherein the lower end of the inner tube is provided with a first flare.
4. The jacketed multitubular burner of claim 2, wherein a second flare is provided on the gas inlet on one of the outer tubes.
5. The jacketed multi-tube burner of claim 1, wherein the outer tube at the inner layer has a length less than the outer tube at the outer layer, the upper ends of the outer and inner tubes being flush, forming a burner port above the outer and inner tubes.
6. The jacketed multi-tube burner of claim 5, wherein a spoiler is provided at the burner nozzle.
7. The jacketed multi-tube burner of claim 1, wherein the top side wall of the outer tube at the outermost layer is provided with waste flammable gas injection holes, and the discharge air chamber is provided with swirl vanes which are matched with the waste flammable gas injection holes.
8. A burner skid, comprising:
the jacketed multi-tube burner of any one of claims 1-7, provided in plurality;
and the gas pipeline is connected with a plurality of the jacket multi-tube type burners.
9. The burner skid of claim 8, wherein a plurality of the jacketed multi-tube burners are arranged in an array; the lower end of the inner pipe is provided with a first bell mouth; the gas pipeline comprises an inner pipe gas pipe and an outer pipe gas pipe, the inner pipe gas pipe is inserted in the first bell mouth, and the outer pipe gas pipe is connected with the gas inlet.
10. A ground flare comprising a burner pry block according to claim 8 or 9.
CN202210101295.6A 2022-01-27 2022-01-27 Jacket multi-tube type combustor, combustor prying block and ground torch Pending CN114383147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210101295.6A CN114383147A (en) 2022-01-27 2022-01-27 Jacket multi-tube type combustor, combustor prying block and ground torch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210101295.6A CN114383147A (en) 2022-01-27 2022-01-27 Jacket multi-tube type combustor, combustor prying block and ground torch

Publications (1)

Publication Number Publication Date
CN114383147A true CN114383147A (en) 2022-04-22

Family

ID=81203937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210101295.6A Pending CN114383147A (en) 2022-01-27 2022-01-27 Jacket multi-tube type combustor, combustor prying block and ground torch

Country Status (1)

Country Link
CN (1) CN114383147A (en)

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