CN103673604A - Reducing radiation furnace tube of heating furnace - Google Patents
Reducing radiation furnace tube of heating furnace Download PDFInfo
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- CN103673604A CN103673604A CN201210361896.7A CN201210361896A CN103673604A CN 103673604 A CN103673604 A CN 103673604A CN 201210361896 A CN201210361896 A CN 201210361896A CN 103673604 A CN103673604 A CN 103673604A
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- tube
- reducing
- furnace
- heating furnace
- light pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a reducing radiation furnace tube of a heating furnace. The reducing radiation furnace tube can be applied to a tubular heating furnace in the field of petrochemical engineering and can enhance the heat transfer process and reduce coking in the tube. The reducing radiation furnace tube of the heating furnace comprises a light tube section (1) and at least one set of reducing unit (2) which is composed of a gradually-contracting section (3), a reducing section (4) and a gradually-expanding section (5), wherein the reducing units (2) are arranged in the flowing direction of fluid from a furnace tube inlet (6). By the adoption of the reducing radiation furnace tube of the heating furnace, pulse change of the flowing speed of the fluid in the tube can be generated so that a boundary layer can be damaged, heat transfer enhancement is achieved, and the possibility of coking in the tube is reduced. The reducing radiation furnace tube can be applied to the tubular heating furnace in the field of petrochemical engineering and can also applied to heating furnaces, in other industries, which adopt radiation furnace tubes to heat media in the tubes.
Description
Technical field
The present invention relates to a kind ofly for adopting the reducing type heating furnace radiating furnace tube in the heating furnace of medium in radiating furnace tube heating tube, be particularly useful for the tubular heater of petrochemical industry.
Background technology
Tubular heater is the Furnace using in petroleum refining, petrochemical industry and chemistry, chemical fibre industry, its effect is inflammable and explosive hydrocarbon gas or the liquid phase oil product in the heat furnace tubing discharging by gas or liquid fuel combustion, to reach technological requirement.Compare with general industrial furnace, tubular heater is dangerous large, and operating condition is harsh, and easily coking affects long-term operation.This all gives the operation of tubular heater and optimizes operation and brought difficulty.
Boiler tube is the visual plant that tubular heater carries out heat transmission.Boiler tube need to move for a long time under the exacting terms such as high temperature, high pressure and Korrosionsmedium, than miscellaneous equipment and parts, more easily damages.If furnace tube heat transfer efficiency compared with high, coking is few, can realize the energy-saving and cost-reducing target of enterprise, Ye Wei enterprise brings economic well-being of workers and staff hugely.The current measure that solves boiler tube efficient heat transfer, minimizing coking is mainly in boiler tube, to increase flow-disturbing part, raising boiler tube inner wall roughness, the employing counter-current flow raising temperature difference etc., has limitation.Such as increasing flow-disturbing part and improving inner wall roughness, increase to a certain extent flow resistance, can not realize well the object of efficient heat transfer, minimizing coking.
Summary of the invention
The present invention proposes a kind of reducing type heating furnace radiating furnace tube.This boiler tube relatively simple for structure, due to flow section cyclically-varying, also can there is alternate cycle pulsatile change in flow velocity thereupon, Hydrodynamic turbulence strengthens, and is conducive to mix and reduce boundary layer, and then prevents coking, augmentation of heat transfer, flow resistance increases not too large simultaneously.Therefore, reducing type heating furnace radiating furnace tube of the present invention can be realized well efficient heat transfer, reduce the target of coking, thereby improves the thermal efficiency of heating furnace, reduces fuel consumption, extends the cycle of operation, improves economic well-being of workers and staff.
The reducing type heating furnace radiating furnace tube that the present invention proposes, comprise light pipe section (1) and reducing unit (2), wherein reducing unit (2) are comprised of converging transition (3), reducer (4), divergent segment (5), and along fluid flow direction, at least arrange one group on boiler tube straight length.
In described reducing type heating furnace radiating furnace tube, the length L 1 of converging transition (3) is 0.1～10 times of light pipe section (1) inside diameter D.
In described reducing type heating furnace radiating furnace tube, the inside diameter D 1 of reducer (4) is 0.75～1.25 times of light pipe section (1) inside diameter D, and length L 2 is 0.1～20 times of light pipe section (1) inside diameter D.
In described reducing type heating furnace radiating furnace tube, the length L 3 of divergent segment (5) is 0.1～10 times of light pipe section (1) inside diameter D.
Described reducing type heating furnace radiating furnace tube, reducing unit (2) arrange many groups from boiler tube entrance (6) along fluid flow direction, and the spacing L between two adjacent groups reducing unit (2) is 0.1～40 times of light pipe section (1) inside diameter D.
Described reducing type heating furnace radiating furnace tube is applicable to the heating furnace of medium in all employing radiating furnace tube heating tubes.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 and Fig. 2 are the reducing type heating furnace radiating furnace tube embodiment schematic diagrames that the present invention proposes.
Fig. 3 and Fig. 4 are the reducing unit enlarged diagrams of the reducing type heating furnace radiating furnace tube that proposes of the present invention.
In Fig. 1 to Fig. 4,1. light pipe section, 2. reducing unit, 3. converging transition, 4. reducer, 5. divergent segment, 6. boiler tube entrance, 7. boiler tube outlet.
The specific embodiment
Referring to figs. 1 to Fig. 4, the reducing type heating furnace radiating furnace tube that the present invention proposes, comprise light pipe section (1) and reducing unit (2), wherein reducing unit (2) are comprised of converging transition (3), reducer (4), divergent segment (5), and along fluid flow direction, at least arrange one group on boiler tube straight length.
Referring to figs. 1 to Fig. 4, the length L 1 of converging transition (3) is 0.1～10 times of light pipe section (1) inside diameter D.
Referring to figs. 1 to Fig. 4, the inside diameter D 1 of reducer (4) is 0.75～1.25 times of light pipe section (1) inside diameter D, and length L 2 is 0.1～20 times of light pipe section (1) inside diameter D.
Referring to figs. 1 to Fig. 4, the length L 3 of divergent segment (5) is 0.1～10 times of light pipe section (1) inside diameter D.
Referring to figs. 1 to Fig. 4, reducing unit (2) arrange many groups from boiler tube entrance (6) along fluid flow direction, and the spacing L between two adjacent groups reducing unit (2) is 1～40 times of light pipe section (1) inside diameter D.
The reducing type heating furnace radiating furnace tube that the present invention proposes is applicable to the heating furnace of medium in all employing radiating furnace tube heating tubes.
The use procedure of the reducing type heating furnace radiating furnace tube that the present invention proposes, can be for example: heated medium enters boiler tube light pipe section (1) from boiler tube entrance (6), then at least one reducing unit (2) of flowing through, flows out from boiler tube outlet (7).While wherein flowing through reducing unit (2), because boiler tube cross-sectional area generating period changes, and flow remains unchanged, so cross section flow velocity also presents periodic pulsatile change rule, and then strengthening mixes and diabatic process; Due to the constraint for fluid flow direction of converging transition and divergent segment, fluid originally, is being increased and axial flow direction Radial Flow at an angle on mobile basis along boiler tube axial direction, therefore destroyed near flowing law boundary layer, thereby augmentation of heat transfer, and less coking.
The diameter of the reducer (4) in the reducing type heating furnace radiating furnace tube that the present invention proposes can be greater than the internal diameter of light pipe section (1), also can be less than the internal diameter of light pipe section (1).When many groups reducing unit is set on boiler tube inner fluid flow direction, the structural parameters of each reducing unit can be identical, also can be different.
The material of the reducing unit in the reducing type heating furnace radiating furnace tube that the present invention proposes is identical with the material of light pipe section.The method such as casting, forging that can adopt integral type also can be welded on light pipe after the moulding such as casting, forging again.
Claims (6)
1. a reducing type heating furnace radiating furnace tube, comprise light pipe section (1) and reducing unit (2), it is characterized in that: reducing unit (2) are comprised of converging transition (3), reducer (4), divergent segment (5), and along fluid flow direction, at least arrange one group on boiler tube straight length.
2. reducing type heating furnace radiating furnace tube according to claim 1, is characterized in that: the length L 1 of converging transition (3) is light pipe section (1) inside diameter D 0.1～10 times.
3. reducing type heating furnace radiating furnace tube according to claim 1, is characterized in that: the inside diameter D 1 of reducer (4) is light pipe section (1) inside diameter D 0.75～1.25 times, length L 2 is 0.1～20 times of light pipe section (1) inside diameter D.
4. reducing type heating furnace radiating furnace tube according to claim 1, is characterized in that: the length L 3 of divergent segment (5) is light pipe section (1) inside diameter D 0.1～10 times.
5. reducing type heating furnace radiating furnace tube according to claim 1, it is characterized in that: reducing unit (2) arrange many groups from boiler tube entrance (6) along fluid flow direction, the spacing L between two adjacent groups reducing unit (2) is 1～80 times of light pipe section (1) inside diameter D.
6. reducing type heating furnace radiating furnace tube according to claim 1, is characterized in that: the heating furnace that is applicable to medium in all employing radiating furnace tube heating tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361896.7A CN103673604A (en) | 2012-09-26 | 2012-09-26 | Reducing radiation furnace tube of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361896.7A CN103673604A (en) | 2012-09-26 | 2012-09-26 | Reducing radiation furnace tube of heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103673604A true CN103673604A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210361896.7A Pending CN103673604A (en) | 2012-09-26 | 2012-09-26 | Reducing radiation furnace tube of heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN103673604A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046984U (en) * | 1989-05-13 | 1989-11-01 | 卢士昌 | Multipurpose heating stove |
| US4983214A (en) * | 1990-02-13 | 1991-01-08 | Zia Technology, Inc. | Method and apparatus for direct reduction of metal oxides |
| CN2166400Y (en) * | 1993-06-25 | 1994-05-25 | 李松 | Heat exchanging pipe |
| CN2330959Y (en) * | 1998-07-18 | 1999-07-28 | 新疆凌峰热电节能有限公司 | Hot water jetting heater |
| CN2365621Y (en) * | 1999-03-04 | 2000-02-23 | 国家建筑材料工业局天津水泥工业设计研究院 | Combined decomposition furnace with bottom swirl pre-combustion chamber |
| CN200949824Y (en) * | 2006-07-21 | 2007-09-19 | 中材建设有限公司 | Online type multiple reducing low nitrogen decomposition furnace |
| CN201615688U (en) * | 2009-11-30 | 2010-10-27 | 华新水泥股份有限公司 | High-efficient environmental-protective precalciner |
| CN202973882U (en) * | 2012-09-26 | 2013-06-05 | 中国石油大学(北京) | Variable-diameter-type radiation furnace tube of heating furnace |
-
2012
- 2012-09-26 CN CN201210361896.7A patent/CN103673604A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046984U (en) * | 1989-05-13 | 1989-11-01 | 卢士昌 | Multipurpose heating stove |
| US4983214A (en) * | 1990-02-13 | 1991-01-08 | Zia Technology, Inc. | Method and apparatus for direct reduction of metal oxides |
| CN2166400Y (en) * | 1993-06-25 | 1994-05-25 | 李松 | Heat exchanging pipe |
| CN2330959Y (en) * | 1998-07-18 | 1999-07-28 | 新疆凌峰热电节能有限公司 | Hot water jetting heater |
| CN2365621Y (en) * | 1999-03-04 | 2000-02-23 | 国家建筑材料工业局天津水泥工业设计研究院 | Combined decomposition furnace with bottom swirl pre-combustion chamber |
| CN200949824Y (en) * | 2006-07-21 | 2007-09-19 | 中材建设有限公司 | Online type multiple reducing low nitrogen decomposition furnace |
| CN201615688U (en) * | 2009-11-30 | 2010-10-27 | 华新水泥股份有限公司 | High-efficient environmental-protective precalciner |
| CN202973882U (en) * | 2012-09-26 | 2013-06-05 | 中国石油大学(北京) | Variable-diameter-type radiation furnace tube of heating furnace |
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Application publication date: 20140326 |