CN102671399A - Reboiler - Google Patents
Reboiler Download PDFInfo
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- CN102671399A CN102671399A CN2012101623195A CN201210162319A CN102671399A CN 102671399 A CN102671399 A CN 102671399A CN 2012101623195 A CN2012101623195 A CN 2012101623195A CN 201210162319 A CN201210162319 A CN 201210162319A CN 102671399 A CN102671399 A CN 102671399A
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- reboiler
- heat exchanger
- longitudinal fluting
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- exchanger tube
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Abstract
The invention discloses a reboiler which comprises a cylinder and a plurality of heat exchange tubes, wherein a material inlet and a material outlet are arranged at two ends of the cylinder respectively; a steam inlet is arranged on the cylinder on the side of the material outlet; and a condensate outlet is arranged on the cylinder on the side of the material inlet. According to the reboiler, a porous layer is processed on inner surfaces of heat exchange tube substrates and the porous layer has a heating surface with increased roughness so as to form an artificial evaporating core, so that the heat transfer efficiency of the heat exchange tubes is increased. Meanwhile, longitudinal grooves are processed on the outer surfaces of the heat exchange tube substrates, circular bulges are arranged in the longitudinal grooves, longitudinal nicks are arranged on a teeth part, the thickness of a liquid film is reduced by utilizing a surface tension and then the condensation effect on the exteriors of the heat exchange tubes is improved. According to the invention, the total coefficient of heat transfer of the reboiler is above 3 times of that of a light tube reboiler; anti-scaling capacity of boiling sides of the heat exchange tubes is increased; the dirt deposition rate is less than that of a smooth tube, so that the cleaning period of the reboiler is prolonged.
Description
Technical field
The present invention relates to a kind of reboiler.
Background technology
Reboiler is to be used to vaporize one type of heat exchanger of tower bottom product, is widely used in industries such as oil, chemical industry, cryogenic refrigeration, power, the energy.The heat-exchanging tube bundle of reboiler adopts plain tube usually, and this kind reboiler is called the light pipe reboiler.The heat exchange efficiency of the heat exchanger tube of light pipe reboiler is low, and heat transfer process is many to the consumption of power and material, and the easy fouling of heat exchanger tube boiling side, when layer of scale is more and more thicker, can cause production efficiency further to reduce, even cause the stopping production accident.
Summary of the invention
The present invention has designed and developed a kind of reboiler.In the present invention, processed porous layer at the inner surface of the heat exchanger tube matrix of reboiler, porous layer has been made the artificial nucleus of boiling through increasing the roughness of heating surface, thereby improves the heat transfer efficiency of heat exchanger tube; Simultaneously, process longitudinal fluting at the outer surface of heat exchanger tube matrix, longitudinal fluting inside has circular projection, and in tooth portion, also is provided with vertical indentation, utilizes surface tension attenuate condensate film thickness, has improved the condensation effect of the outside of heat exchanger tube.The present invention has improved the boiling heat transfer of shell side and the condensation heat transfer of tube side simultaneously; Make the overall heat-transfer coefficient of reboiler of the present invention can reach more than 3 times of light pipe reboiler; And the resistive connection dirt ability of heat exchanger tube boiling side is improved; Dirt deposition speed has prolonged the cleaning frequency of reboiler much smaller than plain tube.
Technical scheme provided by the invention is:
A kind of reboiler comprises:
Cylindrical shell, the two ends of said cylindrical shell have material inlet and material outlet respectively, and said cylindrical shell also has steam inlet in a side of said material outlet, and have condensate outlet in said material inlet one side;
Many heat exchanger tubes, said many heat exchanger tubes are arranged side by side in said cylindrical shell, wherein; Said heat exchanger tube includes matrix and porous layer, and said porous layer is positioned at the inner surface of said matrix, and said porous layer thickness is 0.1 ~ 0.5mm; Porosity is 30 ~ 60%, and the outer surface of the mid portion of said matrix is equipped with a plurality of longitudinal flutings and a plurality of tooth portion, and said longitudinal fluting and said tooth portion are provided with at interval; The inner surface of said longitudinal fluting is evenly equipped with circular projection, and the cross section of said longitudinal fluting is trapezoidal, and the bottom of said longitudinal fluting is the trapezoidal long end; The degree of depth of said longitudinal fluting is 0.5 ~ 1.5mm, and groove center is apart from being 2 ~ 3mm, and the cross section of said tooth portion is inverted trapezoidal; The surface of said tooth portion has many vertical indentations, and the outer surface of two ends of said matrix is smooth surface.
Preferably, in the described reboiler, the surface of said tooth portion is equipped with many vertical indentations, and the degree of depth of said vertical indentation is 0.1 ~ 0.15mm.
Preferably, in the described reboiler, the bottom and the connecting portion between the sidepiece of said longitudinal fluting are circular-arc, and the radius of curvature of the bottom of said longitudinal fluting and the connecting portion between the sidepiece is 0.1 ~ 0.2mm.
Preferably, in the described reboiler, the connecting portion between said longitudinal fluting and the said tooth portion is circular-arc, and the radius of curvature of the connecting portion between said longitudinal fluting and the said tooth portion is 0.1 ~ 0.2mm.
Preferably, in the described reboiler, said porous layer is for adopting aluminium powder, iron powder or copper powder sintering or soldering formed rough aperture on the inner surface of the matrix of said heat exchanger tube.
Preferably, in the described reboiler, the external diameter of said heat exchanger tube is 19 ~ 57mm.
Preferably, in the described reboiler, the thickness of said heat exchanger tube matrix is 2 ~ 5mm.
Preferably, described reboiler also comprises:
A plurality of mount pads, it is with respect to the outer surface that circumferentially is distributed in said cylindrical shell of said cylindrical shell.
Reboiler of the present invention has following beneficial effect:
(1) porous layer can significantly improve the boiling heat transfer effect of heat exchanger tube, and its boiling heat transfer coefficient can reach 3 ~ 10 times of smooth surface, and critical heat flux density is more than 2 times of smooth surface; And the scale inhibition ability of porous layer is strong, and the dirt deposition speed of heat exchanger tube with porous layer has prolonged the cleaning frequency of reboiler much smaller than plain tube.
(2) outer surface of heat exchanger tube matrix is provided with longitudinal fluting; And longitudinal fluting inside has circular projection; Has vertical indentation in the tooth portion; Utilize surface tension attenuate condensate film thickness, can significantly improve the condensation heat transfer effect of heat exchanger tube, the condensation coefficient with surface of longitudinal fluting and vertical indentation can reach 3 ~ 6 times of smooth surface.
(3) overall heat-transfer coefficient of reboiler of the present invention can reach more than 3 times of light pipe reboiler; Required heat transfer temperature difference is merely 1/2 ~ 1/10 of light pipe reboiler; Required heat exchange area is merely 40% ~ 60% of light pipe reboiler; Reduce the volume of reboiler, can significantly reduce the operating cost and the manufacturing cost of reboiler.
(4) reboiler of the present invention adopts vertical version, and this structure helps boiling in ducts and remains nucleate boiling or circulation state, and boiling heat transfer coefficient at this moment is maximum; The structure of the outer surface of heat exchanger tube matrix of the present invention extremely is suitable for vertical reboiler, can drain condensate liquid rapidly, further reduces thickness of liquid film, improves condensation coefficient.
Description of drawings
Fig. 1 is the structural representation of reboiler of the present invention.
Fig. 2 is the structural representation of the heat exchanger tube of reboiler of the present invention.
Fig. 3 is the A-A cross section view of Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description, can implement according to this with reference to the specification literal to make those skilled in the art.
Like Fig. 1, Fig. 2 and shown in Figure 3; The present invention provides a kind of reboiler, comprising: cylindrical shell 6, and the two ends of said cylindrical shell have material inlet and material outlet respectively; And said cylindrical shell also has steam inlet in a side of said material outlet, and has condensate outlet in said material inlet one side; Many heat exchanger tubes, said many heat exchanger tubes are arranged side by side in said cylindrical shell, wherein; Said heat exchanger tube includes matrix and porous layer, and said porous layer is positioned at the inner surface of said matrix, and said porous layer thickness is 0.1 ~ 0.5mm; Porosity is 30 ~ 60%, and the outer surface of the mid portion of said matrix is equipped with a plurality of longitudinal flutings 82 and a plurality of tooth portion 81, and said longitudinal fluting 82 is provided with said tooth portion 81 at interval; And the inner surface of said longitudinal fluting 82 is evenly equipped with circular projection 825; The cross section of said longitudinal fluting 82 is trapezoidal, and the bottom 822 of said longitudinal fluting is the trapezoidal long end, and the degree of depth h of said longitudinal fluting 82 is 0.5 ~ 1.5mm; Groove center is 2 ~ 3mm apart from d; The cross section of said tooth portion 81 is inverted trapezoidal, and the surface of said tooth portion has many vertical indentations, and the outer surface of two ends of said matrix is smooth surface.
In the present invention, porous layer thickness t is 0.1 ~ 0.5mm, and porosity is 30 ~ 60%.Because porous layer is in order to make a large amount of nucleus of boiling artificially, under the situation of above-mentioned thickness and porosity, can obtain boiling heat transfer effect preferably.
Among the present invention, the degree of depth h of longitudinal fluting is 0.5 ~ 1.5mm, and groove center is 2 ~ 3mm apart from d.Longitudinal fluting oversize, just limited for the improvement of the situation of the outer surface of heat exchanger tube matrix, be unfavorable for attenuate condensate film thickness; Also can have influence on simultaneously the intensity of heat exchanger tube, influence the service life of heat exchanger tube.
The cross section of longitudinal fluting is set to trapezoidal, and the bottom of longitudinal fluting corresponding the trapezoidal long end, the opening part of longitudinal fluting corresponding the trapezoidal base of lacking; That is to say; Longitudinal fluting is that steam provides bigger attaching space in inside, and steam fully contacts with heat exchanger tube, has also increased the cross section of longitudinal fluting simultaneously; Help draining condensate liquid, guaranteed the heat exchange effect.
The d1 of the A/F of longitudinal fluting is 0.5 ~ 1mm, and the bottom width d3 of longitudinal fluting is 1.5 ~ 2mm, and the top width d2 of tooth portion is 1.5 ~ 2mm.
Vertical indentation of the present invention can increase the surface area of heat exchanger tube, thereby has improved heat-transfer effect.Longitudinal fluting inside is evenly equipped with circular projection, can further increase the surface area of heat exchanger tube, helps the thickness of attenuate condensate film.Above-mentioned vertical indentation and circular projection all need evenly to distribute, and are in order to guarantee that each local condensation heat transfer efficient of heat exchanger tube equates.
The end of the heat exchanger tube among the present invention is set to smooth surface, mainly is to install for convenient.The two ends of heat exchanger tube need to be connected with lower perforated plate with upper perforated plate respectively, the length L=n+500 of the end of smooth surface ~ 100mm, and wherein, n has represented the thickness of upper perforated plate or lower perforated plate.
In the described reboiler, the surface of said tooth portion is equipped with many vertical indentations, and the degree of depth of said vertical indentation is 0.1 ~ 0.15mm.
In the described reboiler, the bottom 822 of said longitudinal fluting and the connecting portion 823 between the sidepiece 821 are circular-arc, and the radius of curvature R 2 of the bottom of said longitudinal fluting and the connecting portion between the sidepiece is 0.1 ~ 0.2mm.
In the described reboiler, the connecting portion 824 between said longitudinal fluting 82 and the said tooth portion 81 is circular-arc, and the radius of curvature R 1 of the connecting portion between said longitudinal fluting and the said tooth portion is 0.1 ~ 0.2mm.
Among the present invention, the bottom of longitudinal fluting and the connecting portion between the sidepiece, and the connecting portion of longitudinal fluting and tooth portion all adopts circular-arc design, also is in order to improve the surface condition of heat exchanger tube, to make condensate liquid be unlikely in this gathering, and be easy to landing.
In the described reboiler, said porous layer is for adopting aluminium powder, iron powder or copper powder sintering or soldering formed rough aperture on the inner surface of the matrix of said heat exchanger tube.
In the described reboiler, the external diameter of said heat exchanger tube is 19 ~ 57mm.
In the described reboiler, the thickness of said heat exchanger tube matrix is 2 ~ 5mm.
Described reboiler also comprises: a plurality of mount pads, it is with respect to the outer surface that circumferentially is distributed in said cylindrical shell of said cylindrical shell.
Reboiler of the present invention is vertical reboiler, helps the timely discharge of condensate liquid.
As shown in Figure 1, reboiler of the present invention comprises material inlet 1, low head 2, lower flange 3, lower perforated plate 4, condensate outlet 5, cylindrical shell 6, pull bar 7, heat exchanger tube 8, ear seat 9, upper perforated plate 10, drain 11, upper flange 12, upper cover 13, material outlet 14, steam inlet 15, impingement baffle 16, distance sink tube 17, deflection plate 18, expansion joint 19, sewage draining exit 20.
Wherein, be provided with cylindrical shell 6, heat exchanger tube 8, deflection plate 18, distance sink tube 17 and pull bar 7 between lower perforated plate 4 and the upper perforated plate 10.Heat exchanger tube 8 passes deflection plate 18, and the heat exchanger tube two ends are connected with upper perforated plate 10 with lower perforated plate 4 respectively; Deflection plate 18 is used to increase shell-side fluid flow process length, improves the heat exchange effect and supports heat exchanger tube, by distance sink tube 17 and pull bar 7 location and fixing; On low head 2, be provided with material inlet 1, upper cover 13 is provided with material outlet 14; Cylindrical shell 6 is provided with steam inlet 15 and condensate outlet 5; Ear seat 9 is distributed in drum surface, and plane of living in is vertical with the cylindrical shell axis to keep the vertical installation of reboiler; Impingement baffle 16 is arranged in the steam inlet 15, causes tube vibration unstability and corrosion to prevent steam from directly washing away pipe; Air when drain 11 moves in order to reboiler in the emptying shell side, sewage draining exit 20 are used for draining the liquid in the shell side when being reboiler stoppage in transit maintenance; Have expansion joint 19 on the cylindrical shell, be used to compensate the additional stress that causes because of the temperature difference between cylindrical shell 6 and the heat exchanger tube 8.
In heat exchanger tube 8 process, the method with rolling or drawing processes longitudinal fluting and vertical indentation at the outer surface of plain tube earlier, and the inner surface at plain tube applies the layer of metal powder then, forms porous layer through oversintering or soldering.The material of heat exchanger tube can be carbon steel, steel alloy, stainless steel, copper alloy, aluminium alloy etc., and the porous layer material can be iron-based powder, Cu-base powder, aluminium base powder.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification and the embodiment; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (8)
1. a reboiler is characterized in that, comprising:
Cylindrical shell, the two ends of said cylindrical shell have material inlet and material outlet respectively, and said cylindrical shell also has steam inlet in a side of said material outlet, and have condensate outlet in said material inlet one side;
Many heat exchanger tubes, said many heat exchanger tubes are arranged side by side in said cylindrical shell, wherein; Said heat exchanger tube includes matrix and porous layer, and said porous layer is positioned at the inner surface of said matrix, and said porous layer thickness is 0.1 ~ 0.5mm; Porosity is 30 ~ 60%, and the outer surface of the mid portion of said matrix is equipped with a plurality of longitudinal flutings and a plurality of tooth portion, and said longitudinal fluting and said tooth portion are provided with at interval; The inner surface of said longitudinal fluting is evenly equipped with circular projection, and the cross section of said longitudinal fluting is trapezoidal, and the bottom of said longitudinal fluting is the trapezoidal long end; The degree of depth of said longitudinal fluting is 0.5 ~ 1.5mm, and groove center is apart from being 2 ~ 3mm, and the cross section of said tooth portion is inverted trapezoidal; The surface of said tooth portion has many vertical indentations, and the outer surface of two ends of said matrix is smooth surface.
2. reboiler as claimed in claim 1 is characterized in that, the surface of said tooth portion is equipped with many vertical indentations, and the degree of depth of said vertical indentation is 0.1 ~ 0.15mm.
3. reboiler as claimed in claim 1 is characterized in that, the bottom and the connecting portion between the sidepiece of said longitudinal fluting are circular-arc, and the radius of curvature of the bottom of said longitudinal fluting and the connecting portion between the sidepiece is 0.1 ~ 0.2mm.
4. reboiler as claimed in claim 1 is characterized in that, the connecting portion between said longitudinal fluting and the said tooth portion is circular-arc, and the radius of curvature of the connecting portion between said longitudinal fluting and the said tooth portion is 0.1 ~ 0.2mm.
5. reboiler as claimed in claim 1 is characterized in that, said porous layer is for adopting aluminium powder, iron powder or copper powder sintering or soldering formed rough aperture on the inner surface of the matrix of said heat exchanger tube.
6. reboiler as claimed in claim 1 is characterized in that, the external diameter of said heat exchanger tube is 19 ~ 57mm.
7. reboiler as claimed in claim 1 is characterized in that, the thickness of said heat exchanger tube matrix is 2 ~ 5mm.
8. reboiler as claimed in claim 1 is characterized in that, also comprises:
A plurality of mount pads, it is with respect to the outer surface that circumferentially is distributed in said cylindrical shell of said cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210162319.5A CN102671399B (en) | 2012-05-23 | 2012-05-23 | Reboiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210162319.5A CN102671399B (en) | 2012-05-23 | 2012-05-23 | Reboiler |
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| Publication Number | Publication Date |
|---|---|
| CN102671399A true CN102671399A (en) | 2012-09-19 |
| CN102671399B CN102671399B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210162319.5A Active CN102671399B (en) | 2012-05-23 | 2012-05-23 | Reboiler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529463A (en) * | 2015-01-21 | 2015-04-22 | 巩义市荣华节能陶瓷换热器有限公司 | Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler |
| CN105327522A (en) * | 2014-08-13 | 2016-02-17 | 江苏绿叶锅炉有限公司 | Fractionating tower reboiler |
| WO2017003711A1 (en) * | 2015-06-30 | 2017-01-05 | Uop Llc | Heat exchangers for low temperature carbon dioxide separation from natural gas |
| CN106693419A (en) * | 2015-11-12 | 2017-05-24 | 中国石油化工股份有限公司 | Vertical tube falling-film evaporator |
| CN111285421A (en) * | 2020-01-16 | 2020-06-16 | 董国亮 | Methanol-to-olefin sewage stripping tower system |
| CN112069609A (en) * | 2020-07-21 | 2020-12-11 | 中石化南京工程有限公司 | Design and calculation method of supporting lug seat of tower-attached reboiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2798021Y (en) * | 2005-06-02 | 2006-07-19 | 高克联管件(上海)有限公司 | Two surface stengthened falling-film type heat transfer tube |
| CN101430171A (en) * | 2007-11-09 | 2009-05-13 | 上海奥侨实业有限公司 | Pipe for heat exchanger |
| CN201251384Y (en) * | 2008-07-09 | 2009-06-03 | 无锡化工装备总厂 | Fixed tube sheet heat exchanger |
| CN102121804A (en) * | 2011-03-04 | 2011-07-13 | 无锡化工装备有限公司（原无锡化工装备总厂) | Fixed tube-sheet heat exchanger with grooved parent tube surfaces |
-
2012
- 2012-05-23 CN CN201210162319.5A patent/CN102671399B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2798021Y (en) * | 2005-06-02 | 2006-07-19 | 高克联管件(上海)有限公司 | Two surface stengthened falling-film type heat transfer tube |
| CN101430171A (en) * | 2007-11-09 | 2009-05-13 | 上海奥侨实业有限公司 | Pipe for heat exchanger |
| CN201251384Y (en) * | 2008-07-09 | 2009-06-03 | 无锡化工装备总厂 | Fixed tube sheet heat exchanger |
| CN102121804A (en) * | 2011-03-04 | 2011-07-13 | 无锡化工装备有限公司（原无锡化工装备总厂) | Fixed tube-sheet heat exchanger with grooved parent tube surfaces |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327522A (en) * | 2014-08-13 | 2016-02-17 | 江苏绿叶锅炉有限公司 | Fractionating tower reboiler |
| CN104529463A (en) * | 2015-01-21 | 2015-04-22 | 巩义市荣华节能陶瓷换热器有限公司 | Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler |
| WO2017003711A1 (en) * | 2015-06-30 | 2017-01-05 | Uop Llc | Heat exchangers for low temperature carbon dioxide separation from natural gas |
| CN106693419A (en) * | 2015-11-12 | 2017-05-24 | 中国石油化工股份有限公司 | Vertical tube falling-film evaporator |
| CN106693419B (en) * | 2015-11-12 | 2019-06-11 | 中国石油化工股份有限公司 | Vertical tube falling evaporator |
| CN111285421A (en) * | 2020-01-16 | 2020-06-16 | 董国亮 | Methanol-to-olefin sewage stripping tower system |
| CN112069609A (en) * | 2020-07-21 | 2020-12-11 | 中石化南京工程有限公司 | Design and calculation method of supporting lug seat of tower-attached reboiler |
| CN112069609B (en) * | 2020-07-21 | 2024-04-30 | 中石化南京工程有限公司 | Design and calculation method of supporting ear seat of tower-attached reboiler |
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| CN102671399B (en) | 2014-07-16 |
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