CN114278952A - Air supply system of air smoke abatement type ground torch - Google Patents
Air supply system of air smoke abatement type ground torch Download PDFInfo
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- CN114278952A CN114278952A CN202111486592.9A CN202111486592A CN114278952A CN 114278952 A CN114278952 A CN 114278952A CN 202111486592 A CN202111486592 A CN 202111486592A CN 114278952 A CN114278952 A CN 114278952A
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- 239000000779 smoke Substances 0.000 title claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 28
- 230000008030 elimination Effects 0.000 claims abstract description 22
- 238000003379 elimination reaction Methods 0.000 claims abstract description 22
- 239000011490 mineral wool Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses an air supply system of an air smoke elimination type ground torch, which comprises: n air supply subsystems; the air smoke elimination type ground torch comprises an N-stage combustion system; each air supply subsystem respectively supplies air for a plurality of combustors in the corresponding primary combustion system. The structures of all the air supply subsystems are the same, and the air supply subsystems comprise: the air distribution structure comprises a fan, an air pipe network, a metal hose, a combustor air distribution structure and an electric valve; the output end of the fan is connected with one end of the main pipeline and used for generating combustion-supporting air and outputting the combustion-supporting air to the main pipeline; m branch pipelines are arranged at the other end of the main pipeline and are connected with M corresponding metal hoses; the M metal hoses are respectively connected to the M combustors of the current-stage combustion system through the corresponding M combustor air distribution structures to supply air for the M combustors of the current-stage combustion system; the electric valve is arranged on the main pipeline. The invention adopts the scheme of single-point air supply, and independently supplies air for each level of single combustor, thereby improving the air utilization efficiency, ensuring the smokeless combustion of the ground torch and overcoming the defects of the existing air supply system.
Description
Technical Field
The invention belongs to the technical field of thermal energy engineering, and particularly relates to an air supply system of an air smoke abatement type ground torch.
Background
The industrial torch is an important safety measure for petrochemical enterprises and is mainly used for burning and processing combustible exhaust gas under the working conditions of starting and stopping and accidents. The device can be divided into an overhead torch and a ground torch according to the installation position of the burner. The ground torch is generally composed of a torch barrel, a multi-stage combustor, a combustion-supporting system and the like, and is characterized in that smokeless combustion needs to be realized. Common smoke abatement techniques include steam smoke abatement and air smoke abatement. With the development of technology, air smoke abatement is gradually receiving attention due to its wide application and economy.
Air is subjected to smoke elimination, namely combustion-supporting medium is low-pressure air (2-7 kPa), and is generally supplied by an axial flow fan or a centrifugal fan and sent to the interior of the torch barrel to participate in combustion. The traditional air supply system directly introduces a central air pipe into the torch barrel, supplies air for a plurality of or multistage combustors, cannot effectively distribute combustion-supporting air to a single combustor, belongs to regional air supply, and has the problems of high air consumption, low utilization rate and the like.
Disclosure of Invention
The technical problem of the invention is solved: the air supply system of the air smoke elimination type ground torch is characterized in that the air supply system adopts a single-point air supply scheme, independent air supply is carried out on each stage of single combustor, the air utilization efficiency is improved, the smokeless combustion of the ground torch is ensured, and the defects of the existing air supply system are overcome
In order to solve the technical problem, the invention discloses an air supply system of an air smoke elimination type ground torch, which comprises: n air supply subsystems;
the air smoke elimination type ground torch comprises an N-stage combustion system; wherein each stage of combustion system comprises a plurality of combustors;
each air supply subsystem respectively supplies air for a plurality of combustors in the corresponding primary combustion system.
In the air supply system of the air smoke elimination type ground torch, the structures of all air supply subsystems are the same, and the air supply system comprises: the air distribution structure comprises a fan, an air pipe network, a metal hose, a combustor air distribution structure and an electric valve;
recording the number of the burners in the current-stage combustion system as M, then:
the number of the metal hoses is M, and the number of the air distribution structures of the combustor is M; the air pipe network includes: a main pipe and M branch pipes;
the output end of the fan is connected with one end of the main pipeline and used for generating combustion-supporting air and outputting the combustion-supporting air to the main pipeline;
m branch pipelines are arranged at the other end of the main pipeline and are connected with M corresponding metal hoses;
the M metal hoses are respectively connected to the M combustors of the current-stage combustion system through the corresponding M combustor air distribution structures to supply air for the M combustors of the current-stage combustion system;
the electric valve is arranged on the main pipeline.
In the air supply system of the air smoke elimination type ground torch, the fan meets the following parameter conditions:
condition 1: the maximum air supply quantity of the fan is as follows: the sum of the maximum combustion-supporting air volume of M combustors in the current-stage combustion system;
condition 2: the pressure of the fan is as follows: p1+ P2; wherein, P1 represents the pressure at the nozzle of each combustor air distribution structure, and P2 represents the resistance drop of the air pipe network.
In the air supply system of the air smoke elimination type ground torch,
the caliber of the electric valve is consistent with the diameter of the main pipeline;
and the electric valve is used for adjusting the flow of the combustion-supporting air input to the main pipeline by adjusting the opening of the valve, ensuring that the air supply quantity of the fan is matched with the combustion-supporting air quantity required by M combustors in the current-stage combustion system, and realizing online control.
In the air supply system of the air smoke elimination type ground torch, an air pipe network is used for conveying combustion-supporting air; wherein, the diameter of the main pipeline and the diameter of the branch pipeline are determined according to the combustion-supporting air quantity and the allowable pipeline resistance drop.
In the air supply system of the air smoke elimination type ground torch, the main pipeline and each branch pipeline positioned in the cylinder are provided with radiation protection heat insulation layers so as to reduce the temperature of the pipeline.
In the air supply system of the air smoke elimination type ground torch, the radiation protection heat insulation layer of the air pipe network is as follows: rock wool with stainless steel sheets wrapped on the outer layer; wherein the thickness of the rock wool is 30-50 mm, and the thickness of the stainless steel sheet is 0.3-0.6.
In the air supply system of the air smoke elimination type ground torch, the flexible connection between the air distribution structure of the burner and the branch pipeline is realized through the metal hose, and the metal hose expands under the high-temperature condition, so that the stress of the air pipe network is eliminated.
In the air supply system of the air smoke elimination type ground torch, the size of the inlet of the air distribution structure of the burner is matched with the pipe diameter of the branch pipeline.
In the air supply system of the air smoke elimination type ground torch, the burner air distribution structure is used as a direct structural member for providing combustion-supporting air for the burner and is used for reasonably distributing and dispersing the combustion-supporting air to the corresponding burner.
The invention has the following advantages:
(1) the invention discloses an air supply system of an air smoke elimination type ground torch, which realizes single-point air supply by arranging an air pipe network with branch pipelines and an independent burner air distribution structure, effectively improves the mixing efficiency of combustion-supporting air and torch gas, and obviously reduces the consumption of the combustion-supporting air of hydrocarbon.
(2) The invention discloses an air supply system of an air smoke elimination type ground torch, which adopts a metal hose to realize the flexible connection between a burner air distribution structure and branch pipelines, and the metal hose expands under the high-temperature condition, thereby effectively eliminating the pipeline stress of an air pipe network under the high-temperature environment when torch gas is burnt, and further ensuring the safety of the system.
Drawings
FIG. 1 is a schematic structural diagram of an air supply system of an air-smoke-abatement ground torch in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a wind supply subsystem in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides an air supply system of an air smoke elimination type ground torch by adopting single-point air supply by combining the arrangement of burners at all levels aiming at the staged combustion characteristics of the ground torch, combustion-supporting air is provided by a fan, an air pipe network is arranged, a main pipeline of the air pipe network leads out a plurality of branch pipelines in a torch barrel, and each branch pipeline is directly connected with an air distribution structure of a single burner; and a metal hose is arranged at the joint of the branch pipeline and the air distribution structure of the combustor so as to eliminate the stress under the high-temperature working condition.
In this embodiment, as shown in fig. 1, the air supply system of the air-smoke-eliminating ground flare comprises: n air supply subsystems. The air smoke elimination type ground torch comprises N-stage combustion systems, and each air supply subsystem supplies air for a plurality of combustors in the corresponding first-stage combustion system respectively.
In the present embodiment, the structures of the air supply subsystems are the same, and the structure of any one air supply subsystem will be described as an example.
As shown in fig. 2, the air supply subsystem includes: the device comprises a fan 1, an air pipe network 2, a metal hose 3, a combustor air distribution structure 4 and an electric valve 5.
Recording the number of the burners in the current-stage combustion system as M, then:
the number of the metal hoses 3 is M, and the number of the burner air distribution structures 4 is M; the air pipe network 2 includes: a main pipe 21 and M branch pipes 22. Wherein, the output end of the fan 1 is connected with one end of the main pipeline 21; the M branch pipelines 22 are arranged at the other end of the main pipeline 21, and the M branch pipelines 22 are connected with the corresponding M metal hoses 3; the M metal hoses 3 are respectively connected to the M combustors of the current-stage combustion system through the corresponding M combustor air distribution structures 4 to supply air for the M combustors of the current-stage combustion system; the electrically operated valve 5 is provided on the main conduit 21.
In the present embodiment, as for the fan 1, there are:
and the fan 1 is used for generating combustion air and outputting the combustion air to the main pipeline 21. Wherein the combustion-supporting air provided by the fan 1 is low-pressure (2-7 kPa) combustion-supporting air.
The fan 1 meets the following parameter conditions: condition 1: the maximum air supply volume of the fan 1 is as follows: the sum of the maximum combustion-supporting air volume of M combustors in the current-stage combustion system; condition 2: the pressure of the fan 1 is: p1+ P2; wherein P1 represents the sum of the pressures at the nozzles of the burner air distribution structures 4, and P2 represents the resistance drop of the air network 2.
In the present embodiment, for the electric valve 5, there are:
and the electric valve 5 is used for adjusting the flow of the combustion-supporting air input to the main pipeline 21 by adjusting the opening of the valve, ensuring that the air supply quantity of the fan 1 is matched with the combustion-supporting air quantity required by M combustors in the current-stage combustion system, and realizing online control.
The caliber of the electric valve 5 is consistent with the diameter of the main pipeline 21.
In this embodiment, for the air pipe network 2, there are:
and the air pipe network 2 is used for conveying combustion air.
The main pipe 21 and each branch pipe 22 are provided with a radiation-proof heat-insulating layer inside the cylinder to reduce the pipe temperature. Wherein, this radiation protection heat insulating layer is: the outer layer is coated with rock wool of stainless steel sheet. Furthermore, the thickness of rock wool is 30 ~ 50mm, and the thickness of stainless steel piece is 0.3 ~ 0.6.
The diameter of the main duct 21 and the diameter of the branch duct 22 are determined according to the combustion air volume and the allowable duct resistance drop.
In the present embodiment, as the metal hose 3, there are:
the combustor air distribution structure 4 and the branch pipeline 22 are flexibly connected through the metal hose 3, and the metal hose 3 expands under the high-temperature condition, so that the stress of the air pipe network 2 is eliminated.
The metal hose 3 may be determined according to the maximum operating temperature and pressure. For example, a metal expansion joint may be selected as the metal hose 3.
In the present embodiment, as the burner air distribution structure 4, there are:
the burner air distribution structure 4 serves as a direct structural member for providing combustion air for the burner and is used for reasonably distributing and dispersing the combustion air to the corresponding burner.
The size of the inlet of the burner air distribution structure 4 is matched with the pipe diameter of the branch pipe 22.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (10)
1. An air supply system of an air smoke abatement ground torch is characterized by comprising: n air supply subsystems;
the air smoke elimination type ground torch comprises an N-stage combustion system; wherein each stage of combustion system comprises a plurality of combustors;
each air supply subsystem respectively supplies air for a plurality of combustors in the corresponding primary combustion system.
2. The air supply system of an air smokeless ground torch of claim 1, wherein each air supply subsystem is structurally identical and comprises: the device comprises a fan (1), an air pipe network (2), a metal hose (3), a combustor air distribution structure (4) and an electric valve (5);
recording the number of the burners in the current-stage combustion system as M, then:
the number of the metal hoses (3) is M, and the number of the burner air distribution structures (4) is M; the air duct network (2) comprises: a main pipe (21) and M branch pipes (22);
the output end of the fan (1) is connected with one end of the main pipeline (21) and is used for generating combustion-supporting air and outputting the combustion-supporting air to the main pipeline (21);
m branch pipelines (22) are arranged at the other end of the main pipeline (21), and the M branch pipelines (22) are connected with M corresponding metal hoses (3);
the M metal hoses (3) are respectively connected to M combustors in the current-stage combustion system through corresponding M combustor air distribution structures (4) to supply air for the M combustors of the current-stage combustion system;
the electric valve (5) is arranged on the main pipeline (21).
3. An air supply system of an air smoke elimination type ground torch as claimed in claim 2, wherein the fan (1) satisfies the following parameter conditions:
condition 1: the maximum air supply quantity of the fan (1) is as follows: the sum of the maximum combustion-supporting air volume of M combustors in the current-stage combustion system;
condition 2: the pressure of the fan (1) is as follows: p1+ P2; wherein P1 represents the pressure at the nozzle of each burner air distribution structure (4), and P2 represents the resistance drop of the air pipe network (2).
4. The air supply system of an air smokeless ground torch of claim 3,
the caliber of the electric valve (5) is consistent with the diameter of the main pipeline (21);
and the electric valve (5) is used for adjusting the flow of combustion-supporting air input to the main pipeline (21) by adjusting the opening of the valve, ensuring that the air supply quantity of the fan (1) is matched with the combustion-supporting air quantity required by M combustors in the current-stage combustion system, and realizing online control.
5. The air supply system of an air-smokeless ground torch according to claim 4, characterized by an air pipe network (2) for the delivery of combustion air; wherein, the diameter of the main pipeline (21) and the diameter of the branch pipeline (22) are determined according to the combustion-supporting air quantity and the allowable pipeline resistance drop.
6. An air supply system of an air smoke abatement ground torch as claimed in claim 5, wherein the main conduit (21) and each branch conduit (22) located inside the barrel are provided with radiation insulating layers to reduce the conduit temperature.
7. The air supply system of the air smoke elimination type ground torch as claimed in claim 6, wherein the radiation protection and heat insulation layer of the air pipe network (2) is: rock wool with stainless steel sheets wrapped on the outer layer; wherein the thickness of the rock wool is 30-50 mm, and the thickness of the stainless steel sheet is 0.3-0.6.
8. The air supply system of the air smoke abatement ground torch as claimed in claim 7, wherein the flexible connection between the burner air distribution structure (4) and the branch pipe (22) is realized by a metal hose (3), and the metal hose (3) expands under high temperature condition, thereby eliminating the stress of the air pipe network (2).
9. An air supply system of an air-smokeless ground torch according to claim 8, characterized in that the inlet of the burner air distribution structure (4) is sized to match the pipe diameter of the branch pipe (22).
10. The air supply system of an air-smokeless ground torch according to claim 9, wherein the burner air distribution structure (4) is used as a direct structure for supplying combustion air to the burner for rational distribution and dispersion of the combustion air to the corresponding burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486592.9A CN114278952A (en) | 2021-12-07 | 2021-12-07 | Air supply system of air smoke abatement type ground torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486592.9A CN114278952A (en) | 2021-12-07 | 2021-12-07 | Air supply system of air smoke abatement type ground torch |
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| Publication Number | Publication Date |
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| CN114278952A true CN114278952A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111486592.9A Pending CN114278952A (en) | 2021-12-07 | 2021-12-07 | Air supply system of air smoke abatement type ground torch |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9827705D0 (en) * | 1998-12-16 | 1999-02-10 | Shanks & Mcewan | Flare for burning combustible gas |
| CN102353041A (en) * | 2011-08-09 | 2012-02-15 | 江苏中圣高科技产业有限公司 | Efficient and energy saving ground flare gas system |
| CN102767826A (en) * | 2012-08-06 | 2012-11-07 | 王晶华 | Device for automatic regulation of combustion-supporting air |
| CN103267289A (en) * | 2013-06-03 | 2013-08-28 | 江苏中圣高科技产业有限公司 | Ultra-low pressure flare gas burning device |
| CN110793048A (en) * | 2019-10-16 | 2020-02-14 | 北京航化节能环保技术有限公司 | Novel low-pressure air combustion-supporting torch burner |
| CN211146479U (en) * | 2019-12-16 | 2020-07-31 | 山西华仕集团股份有限公司 | Ground torch external smoke elimination burner |
| CN214664487U (en) * | 2020-12-30 | 2021-11-09 | 陕西金黎明环境工程有限公司 | Swirl air smoke-eliminating torch burner |
-
2021
- 2021-12-07 CN CN202111486592.9A patent/CN114278952A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9827705D0 (en) * | 1998-12-16 | 1999-02-10 | Shanks & Mcewan | Flare for burning combustible gas |
| CN102353041A (en) * | 2011-08-09 | 2012-02-15 | 江苏中圣高科技产业有限公司 | Efficient and energy saving ground flare gas system |
| CN102767826A (en) * | 2012-08-06 | 2012-11-07 | 王晶华 | Device for automatic regulation of combustion-supporting air |
| CN103267289A (en) * | 2013-06-03 | 2013-08-28 | 江苏中圣高科技产业有限公司 | Ultra-low pressure flare gas burning device |
| CN110793048A (en) * | 2019-10-16 | 2020-02-14 | 北京航化节能环保技术有限公司 | Novel low-pressure air combustion-supporting torch burner |
| CN211146479U (en) * | 2019-12-16 | 2020-07-31 | 山西华仕集团股份有限公司 | Ground torch external smoke elimination burner |
| CN214664487U (en) * | 2020-12-30 | 2021-11-09 | 陕西金黎明环境工程有限公司 | Swirl air smoke-eliminating torch burner |
Non-Patent Citations (3)
| Title |
|---|
| （英）肯蒂什编著；林钧富等译: "《工业管道工程》", 中国石化出版社, pages: 217 - 218 * |
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