CN202973881U - Heating furnace radiant furnace tube with linings arranged in staggered manner - Google Patents
Heating furnace radiant furnace tube with linings arranged in staggered manner Download PDFInfo
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- CN202973881U CN202973881U CN 201220494131 CN201220494131U CN202973881U CN 202973881 U CN202973881 U CN 202973881U CN 201220494131 CN201220494131 CN 201220494131 CN 201220494131 U CN201220494131 U CN 201220494131U CN 202973881 U CN202973881 U CN 202973881U
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- boiler tube
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- heating furnace
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Abstract
The utility model relates to a heating furnace radiant furnace tube with linings arranged in a staggered manner, which can be applied to a tubular heating furnace in the field of petrochemical industry and is used for enhancing the heat transfer process and reducing coking in the tube. The heating furnace radiant furnace tube with the linings arranged in a staggered manner comprises a light tube (1) and linings (2), wherein at least one group of linings (2) is arranged on a straight tube section between a furnace tube inlet (3) and a furnace tube outlet (4) along the flowing direction of fluid; and the linings (2) are distributed segmentally and discontinuously along the circumferential direction of the cross section of the furnace tube. By the adoption of the radiant furnace tube, the flowing speed in the furnace tube takes on periodically alternating pulse change rule, the original flat push flow type in the furnace tube is damaged, and the fluid can flow radially, so that the boundary layer is damaged, and the aims of enhancing heat transfer and reducing coking in the tube are fulfilled. The radiant furnace tube can be applied to the tubular heating furnace in the field of petrochemical industry and can also be applied to a heating furnace in other industries adopting the radiant furnace tubes to heat mediums in the tubes.
Description
Technical field
The present invention relates to the heating furnace radiating furnace tube that staggered lining is arranged in a kind of heating furnace for adopting medium in the radiating furnace tube heating tube, be particularly useful for the tubular heater of petrochemical industry.
Background technology
Tubular heater is heater commonly used in petroleum refining and chemical process, compare with the industrial furnace (as metallurgical furnace, heat-treatment furnace, incinerator etc.) of other industry, have following particularity: heated medium is generally inflammable and explosive hydrocarbon gas or liquid phase oil product; Heated medium in boiler tube may undergo phase transition and the coking process; Can only heated air and liquid; Can only burning gases or liquid fuel; Need continuous run in long period to satisfy technological requirement.Therefore, the danger of tubular heater is large, and operating condition is harsh, and easily coking affects long-term operation.
Boiler tube is that tubular heater carries out the visual plant that heat transmits.Boiler tube need to move under the exacting terms such as high temperature, high pressure and Korrosionsmedium for a long time, more easily damages than miscellaneous equipment and parts.If furnace tube heat transfer efficient is higher, coking is few, can realize the energy-saving and cost-reducing target of enterprise, also bring economic well-being of workers and staff hugely for enterprise.The present measure that solves boiler tube efficient heat transfer, minimizing coking is mainly that increase flow-disturbing spare, raising boiler tube inner wall roughness, employing counter-current flow improve the temperature difference etc. in boiler tube, and certain limitation is arranged.Increase to a certain extent flow resistance such as increasing flow-disturbing spare and improving inner wall roughness, increased the power consumption of pipe-line system.
Summary of the invention
The present invention proposes a kind of heating furnace radiating furnace tube that staggered lining is arranged.This boiler tube relatively simple for structure, the processing and manufacturing ratio is easier to.Change because cross section is staggered, flow velocity also can present staggered pulsation Changing Pattern, and Hydrodynamic turbulence strengthens, and is conducive to strengthen mixing and augmentation of heat transfer, and flow resistance increases not too large simultaneously.Simultaneously, because staggered the variation occurs cross section, destroyed original laminar flow flow pattern in boiler tube, produced diametrically Fluid Flow in A, this is conducive to reduce the boundary layer, and then prevents the coking in boiler tube.Therefore, the target that has the heating furnace radiating furnace tube of staggered lining can realize well efficient heat transfer, reduces coking of the present invention, thus the thermal efficiency of raising heating furnace reduces fuel consumption, extends the cycle of operation, improves economic well-being of workers and staff.
The heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes, comprise light pipe (1) and lining (2), along fluid flow direction, one group of lining (2) is set at least at boiler tube entrance (3) to the straight length between boiler tube outlet (4), and upwards segmentation is discontinuously arranged along boiler tube cross section week for lining (2), and the hop count that can divide is 2～12.
In the described heating furnace radiating furnace tube that staggered lining arranged, lining (2) is semicircle, triangle, rectangle, polygon, arc along the vertical sectional shape of boiler tube inner fluid flow direction.
In the described heating furnace radiating furnace tube that staggered lining arranged, lining (2) is 0.01～20 times of boiler tube internal diameter along the height of boiler tube inner fluid flow direction.
In the described heating furnace radiating furnace tube that staggered lining arranged, lining (2) is 0.001～0.3 times of boiler tube internal diameter along boiler tube thickness radially.
In the described heating furnace radiating furnace tube that staggered lining arranged, lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), the spacing between the two adjacent groups lining is 0～40 times of boiler tube internal diameter.
In the described heating furnace radiating furnace tube that staggered lining arranged, lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), the two adjacent groups lining is interspersed on the boiler tube cross section is circumferential.
Described have the heating furnace radiating furnace tube of staggered lining to be applicable to the heating furnace that all adopt medium in the radiating furnace tube heating tube.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a kind of embodiment schematic diagram of the heating furnace radiating furnace tube that staggered lining is arranged that proposes of the present invention.
Fig. 2 is the another kind of embodiment schematic diagram of the heating furnace radiating furnace tube that staggered lining is arranged that proposes of the present invention.
Fig. 3 is A-A cutaway view in accompanying drawing 1.
Fig. 4 is B-B cutaway view in accompanying drawing 1.
Fig. 5 is C-C cutaway view in accompanying drawing 2.
Fig. 6 is D-D cutaway view in accompanying drawing 2.
In Fig. 1 and Fig. 2,1. light pipe, 2. lining, 3. boiler tube entrance, 4. boiler tube outlet.
The specific embodiment
Referring to figs. 1 to Fig. 6, the heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes, comprise light pipe (1) and lining (2), along fluid flow direction, one group of lining (2) is set at least at boiler tube entrance (3) to the straight length between boiler tube outlet (4), and upwards segmentation is discontinuously arranged along boiler tube cross section week for lining (2), and the hop count that can divide is 2～12.
With reference to figure 1 and Fig. 2, lining (2) is semicircle, triangle, rectangle, polygon, arc along the vertical sectional shape of boiler tube inner fluid flow direction.
With reference to figure 1 and Fig. 2, lining (2) is 0.01～20 times of boiler tube internal diameter along the height of boiler tube inner fluid flow direction.
With reference to figure 1 and Fig. 2, lining (2) is 0.001～0.3 times of boiler tube internal diameter along boiler tube thickness radially.
With reference to figure 1 and Fig. 2, lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), and the spacing between the two adjacent groups lining is 0～40 times of boiler tube internal diameter.
Referring to figs. 1 to Fig. 6, lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), and the two adjacent groups lining is interspersed on the boiler tube cross section is circumferential.
The heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes is applicable to all heating furnaces that adopt medium in the radiating furnace tube heating tube.
The use procedure of the heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes, can be for example: heated medium enters boiler tube light pipe (1) from boiler tube entrance (3), then pass through at least one lining (2), flow out from boiler tube outlet (4).When wherein flowing through lining (2), because staggered the variation occurs the boiler tube cross-sectional area, and flow remains unchanged, so the cross section flow velocity also presents periodic alternate pulsation Changing Pattern, and then strengthens and mix and diabatic process; Due to the constraint of lining (2) for fluid flow direction, make the original laminar flow flow pattern of boiler tube inner fluid be subject to destruction, therefore destroyed near the flowing law in boundary layer, thereby increased the turbulence intensity of Fluid Flow in A, be conducive to augmentation of heat transfer, and less coking.
In the heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes, when many group linings were set on boiler tube inner fluid flow direction, the structural parameters of every group of lining can be identical, also can be different.
The material of the lining (2) in the heating furnace radiating furnace tube that staggered lining is arranged that the present invention proposes is identical with the material of boiler tube.Can adopt the method such as casting, forging of integral type, also can cast separately, be welded on light pipe again after the moulding such as forging.
Claims (6)
1. heating furnace radiating furnace tube that staggered lining is arranged, comprise light pipe (1) and lining (2), along fluid flow direction, one group of lining (2) is set at least at boiler tube entrance (3) to the straight length between boiler tube outlet (4), and upwards segmentation is discontinuously arranged along boiler tube cross section week for lining (2), and the hop count that can divide is 2～12.
2. the heating furnace radiating furnace tube that staggered lining is arranged according to claim 1 is characterized in that: lining (2) is semicircle, triangle, rectangle, polygon, arc along the vertical sectional shape of boiler tube inner fluid flow direction.
3. the heating furnace radiating furnace tube that staggered lining is arranged according to claim 1 is characterized in that: lining (2) is 0.01～20 times of boiler tube internal diameter along the height of boiler tube inner fluid flow direction.
4. the heating furnace radiating furnace tube that staggered lining is arranged according to claim 1, it is characterized in that: lining (2) is 0.001～0.3 times of boiler tube internal diameter along boiler tube thickness radially.
5. the heating furnace radiating furnace tube that staggered lining is arranged according to claim 1, it is characterized in that: lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), the spacing between the two adjacent groups lining is 0～40 times of boiler tube internal diameter.
6. the heating furnace radiating furnace tube that staggered lining is arranged according to claim 1, it is characterized in that: lining (2) arranges many groups along fluid flow direction at boiler tube entrance (3) to the straight length between boiler tube outlet (4), the two adjacent groups lining is interspersed on the boiler tube cross section is circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494131 CN202973881U (en) | 2012-09-26 | 2012-09-26 | Heating furnace radiant furnace tube with linings arranged in staggered manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494131 CN202973881U (en) | 2012-09-26 | 2012-09-26 | Heating furnace radiant furnace tube with linings arranged in staggered manner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202973881U true CN202973881U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220494131 Expired - Fee Related CN202973881U (en) | 2012-09-26 | 2012-09-26 | Heating furnace radiant furnace tube with linings arranged in staggered manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202973881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673603A (en) * | 2012-09-26 | 2014-03-26 | 中国石油大学(北京) | Heating furnace radiation furnace tube with lining arranged in staggered mode |
-
2012
- 2012-09-26 CN CN 201220494131 patent/CN202973881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673603A (en) * | 2012-09-26 | 2014-03-26 | 中国石油大学(北京) | Heating furnace radiation furnace tube with lining arranged in staggered mode |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20180926 |