CN106075939B - The kettle type reboiler of band-tube type - Google Patents
The kettle type reboiler of band-tube type Download PDFInfo
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- CN106075939B CN106075939B CN201610536926.1A CN201610536926A CN106075939B CN 106075939 B CN106075939 B CN 106075939B CN 201610536926 A CN201610536926 A CN 201610536926A CN 106075939 B CN106075939 B CN 106075939B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
- B01B1/005—Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
This application discloses a kind of kettle type reboilers of band-tube type, including shell and setting are in the intracorporal core of the shell；The side of the shell is provided with liquid inlet, gas vent and liquid outlet；The core includes coil pipe tube bank and plate beam, and the plate beam is threaded through in the coil pipe tube bank, and plate side liquid entrance, the outlet of plate side liquid, pipe side liquid entrance and the outlet of pipe side liquid are provided on the core；The plate side liquid entrance and the outlet of plate side liquid are connected with the plate beam, and the pipe side liquid entrance and the outlet of pipe side liquid are connected with coil pipe tube bank.Board-like kettle type reboiler of the invention solves in the prior art the problem of design deviation is big, and operating flexibility is small, easy fouling.
Description
Technical field
The present invention relates to the heat exchanger of chemical field more particularly to the kettle type reboilers of band-tube type.
Background technique
In recent years, a kind of board-like reboiler substituting tubular type reboiler is widely applied, and major technique is to use
In the boiling liquid that the plate beam that can be extracted out is immersed in kettle, therefore circulates between plate Shu Yuqi surrounding liquid and carry out, gas-liquid separation
Also it is completed in kettle inner upper space.Board-like reboiler is usually used in the occasions such as tower bottom reboiler, steam generator and vaporizer.With stone
In oily chemical plant installations for tower bottom, board-like reboiler is commonly used to improve tower bottom liquid phase rate of gasification.Its process flow is bottom liquid
Enter kettle type reboiler by feed pipe and submerge tube bank, is heated and generates boiling.Gasifying gas returns to tower bottom liquid level from tedge
Top, saturated liquid overflow are crossed overflow weir to reservoir, are gone out by pumping.
Board-like kettle type reboiler has lot of advantages compared with the kettle type reboiler of tubular type, such as: (1) heat transfer efficiency
Height, heat exchange area are small；(2) small in size, it is light-weight, it is compact-sized；(3) when reducing the stop of the liquid holdup and liquid in kettle
Between.(4) equipment investment and operating cost are reduced.
But board-like kettle type reboiler exposes following deficiency in engineer application:
(1) heat transfer flow phenomenon is complicated, and design calculates and actual value deviation is big, and operating flexibility is small.Multiphase Flow between plate
Than complex flow between pipe, Calculation of Heat Transfer is still immature, design result and the big situation of operation result deviation easily occurs.
(2) it when wall superheat spends big, is easy to happen " steam covering " phenomenon, heat exchange efficiency is greatly lowered.It is board-like heavy
Boil device due between plate channel it is narrow, the influence degree of the phenomenon heat exchanging is significantly larger than the shadow that the phenomenon exchanges heat to shell-and-tube heat exchanger
It rings.About " steam covering " phenomenon, mentioned in decorative pattern at the end of a poem, article, etc. where there is a small blank space English Lang Qi works " heat exchange design manual " (1982 editions) page 194
It " is discussed according to Perun (Palen), in kettle type reboiler or built-in reboiler, because tube bank upper heat transfer pipe surface is by under
The steam covering generated on portion's heat-transfer pipe, this phenomenon are called " steam covers (Vapor Blanketing) ".
It (3) is to be easy fouling the shortcomings that kettle type reboiler, dirt can cause the reduction of the coefficient of heat transfer, shadow of the dirt to plate beam
Ring the influence being significantly larger than to tube bank.
(4) when plate number is more, when plate Shu Changdu longer, flow distribution uneven phenomenon is obvious.
Requirement with petrochemical equipment to energy consumption is higher and higher, in device design, pays the utmost attention to efficient board-like
Reboiler.However that there are design deviations is big for board-like reboiler, operating flexibility is small, the problems such as being easy fouling, and it is a wide range of to limit it
It promotes and applies.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of kettle type reboiler of band-tube type, is solved existing
Have design deviation in technology big, operating flexibility is small, be easy fouling the problem of.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of kettle type reboiler of band-tube type, including shell and setting are in the intracorporal core of the shell；
The side of the shell is provided with liquid inlet, gas vent and liquid outlet；
The core includes coil pipe tube bank and plate beam, and the plate beam is threaded through in the coil pipe tube bank, sets on the core
It is equipped with plate side liquid entrance, the outlet of plate side liquid, pipe side liquid entrance and the outlet of pipe side liquid；
The plate side liquid entrance and plate side liquid outlet is connected respectively with the plate beam, the pipe side liquid entrance and
The outlet of pipe side liquid is connected with coil pipe tube bank.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention can achieve energy-saving purpose.
Heat source fluid in the application can be two strands of different process fluids.Such as: plate side inlet and outlet walk steam, pipe
Side inlet and outlet walk process fluid.It, can be using the process fluid medium in device as part of heat energy, to tower bottom when normal operating
Liquid phase is heated, and the dosage of steam is reduced, to achieve the purpose that save energy consumption.
(2) present invention may make reboiler to realize accurate temperature controlling, and shell-side outlet gas phase fraction is controllable, increases operating flexibility
Advantage.
The plate journey of the kettle type reboiler of band-tube type can undertake most thermic load, and tube side can play regulatory role.It is logical
The flow of tube side fluid is overregulated, the parameters such as out temperature can make reboiler reach design conditions, improve operation bullet
Property.The present invention is provided with coil pipe by the periphery in circular slab beam.Coil shape can be round, ellipse or its
His shape.The bottom of coil pipe can play the effect to shell fluid preheating；Boil-off gas outlet can be improved in the top of coil pipe
Gas phase fraction, it might even be possible to used as superheater, so that exit gas becomes superheat state.
(3) present invention can slow down " steam covering " influence of phenomenon to board-like reboiler.
" steam covering " influence of phenomenon to tubular exchanger will be much smaller than plate heat exchanger.Once there is plate in scene discovery
The phenomenon that side " steam covering ", can increase pipe side thermal fluid flow, undertake tube side part point by reducing plate side vapor flow rate
More thermic loads, and then avoid the influence of " steam covering " to Composite Walls.
(4) present invention can weaken influence of the dirt to overall heat-transfer coefficient.
Since bottom belongs to recombination subregion, belong to the easy crystallizing field of dirt, and what this partial region was just arranged is pipe
Beam region.Dirt deposition will be weaker than its influence to plate beam to the heat transfer of tube bank influence.And then dirt is to band-tube type reboiler
The influence of overall heat-transfer coefficient weakens.
(5) present invention can weaken the uneven phenomenon of shell-side flow distribution.
Coil pipe tube bank of the invention can play the role of shell fluid distributor by adjusting tube spacing.Such as: root
The distribution of fluid caused by long slab beam can be weakened using the different tube spacing of density according to the distance of shrinking away from theshell side fluid inlet
It is uneven.
(6) coil pipe of the invention tube bank has the advantages of being simple to manufacture, heat transfer efficiency is high, maintenance easy to clean.
By the concrete analysis to actual condition, the present invention designs reasonable plate beam and tube bank position, can get both
The advantages of kettle type reboiler of board-like kettle type reboiler and tubular type, overcomes lacking for board-like kettle type reboiler to a certain extent
Point.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the kettle type reboiler of band-tube type provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram inside heat exchanger provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of band-tube type core provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of plate beam provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of coil pipe provided in an embodiment of the present invention tube bank；
Fig. 6 is the structural schematic diagram of single coil provided in an embodiment of the present invention；
Fig. 7 is the stringing figure of 45 ° of corner square structures provided in an embodiment of the present invention；
Fig. 8 is the stringing figure of the tube spacing such as not provided in an embodiment of the present invention.
In figure: 1 pipe side liquid entrance, 2 plate side liquid entrances, the outlet of 3 plate side liquids, the outlet of 4 pipe side liquids, 5 cores
Body, 6 gas vents, 7 shells, 8 liquid outlets, 9 liquid inlets, 10 shell flanges, 11 first inscribed flanges, 12
Two inscribed flanges, the tube bank of 13 coil pipes, 14 weir plates, 15 plate beams, 16 heat exchanger plates, 17 outlet collector tubes, 18 entrance collector tubes,
19 coil outlets, 20 coil inlets, 21 single coils, 22 pipes.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to Fig. 1 and Fig. 2, a kind of kettle type reboiler of band-tube type, including shell 7 and the core 5 being arranged in shell 7；
The side of shell 7 is provided with liquid inlet 9, gas vent 6 and liquid outlet 8；
Core 5 includes coil pipe tube bank 13 and plate beam 15, and plate beam 15 is threaded through in coil pipe tube bank 13, is provided with plate on core 5
Side liquid entrance 2, plate side liquid outlet 3, pipe side liquid entrance 1 and pipe side liquid outlet 4；
Plate side liquid entrance 2 and plate side liquid outlet 3 are connected with plate beam 15 respectively, the pipe side liquid entrance and pipe side
Fluid outlet is connected with coil pipe tube bank.
On the basis of the above embodiments, one end that plate beam 15 passes through coil pipe tube bank 13 is equipped with weir plate 14 to the present embodiment.
The fluid of tube bank 13 and plate beam 15 can be same working medium in heat exchanger core body of the invention, be also possible to difference
Working medium." steam covering " phenomenon will be much smaller than plate beam to the influence that coil pipe is restrained.Once plate side occurs in scene discovery, " steam covers
The phenomenon that lid ", can increase pipe side thermal fluid flow, tube side part point is made to undertake more heat by reducing plate side vapor flow rate
Load, and then avoid the influence of " steam covering " to Composite Walls.When specific works, plate side liquid passes through plate side liquid entrance
2 flow into, and are flowed out by plate side liquid entrance 3.Coil pipe is restrained side liquid and is flowed by pipe side liquid entrance 1, pipe side liquid outlet 4
Outflow.Cold fluid is flowed into from shell side liquid entrance 9, is carried out wall-type heat exchange with core in shell, is undergone phase transition, in shell
Gas-liquid separation is carried out in the large space of top, wherein boil-off gas is flowed out from gas vent 6, and saturated liquid overflow crosses weir plate 14 to storage
After chute, flowed out from liquid outlet 8.
The follow-on board-like kettle type reboiler of the present invention, solves in the prior art that design deviation is big, and operating flexibility is small,
The problem of being easy fouling.
Referring to Fig. 1 and Fig. 2, liquid, ullage of the liquid in shell 7 are injected by liquid inlet 9 in shell 7
Equipped with separated space, and the requirement of the gas phase fraction according to the gas of gas vent 6, the submergence height of liquid can in shell 7
It adjusts.
To prevent gas-liquid from mutually carrying secretly, 7 ullage of shell of evaporator should retain enough separated spaces.According to shell-side
6 eluting gas of gas vent gas phase fraction requirement, the submergence height of liquid is adjustable in shell 7.If to outlet
Liquid content requires not stringent in gas, and the submergence height of liquid level is usually higher by coil pipe on heat exchange core body 5 and restrains 13 upper surfaces about
50mm.If liquid level can be arranged in 15 or more plate beam to the liquid content strict control in exit gas, coil pipe restrains 13 upper ends
Below coil pipe.Coil pipe restrains 13 parts more than liquid level at this time, the gas phase fraction of the adjustable gas phase in this part.In addition, passing through
The temperature of the fluid in coil pipe tube bank 13, the parameters such as flow are controlled, the function of superheater may be implemented in this part coil pipe, i.e., will steam
Body of getting angry is heated to overheat, i.e. the state of the gas of the outflow of gas vent 6 of shell is overheat.
Referring to Fig. 3 and Fig. 4, on the basis of the above embodiments, plate beam 15 is multiple connected disk and thin plates to the present embodiment,
Coil pipe tube bank 13 is round, oval or rectangular.
Referring to fig. 4, on the basis of the above embodiments, plate beam 15 includes that spaced heat exchange is laminated in muti-piece to the present embodiment
Plate 16, the sealing means between heat exchanger plates 16 and heat exchanger plates 16 are using welding.
On the basis of the above embodiments, heat exchanger plates 16 are the ripply corrugated plating of surface band, heat exchanger plates 16 to the present embodiment
For circle, the diameter of the heat exchanger plates is 0.2~1.4m, and the ripple's depth of the corrugated plating is~10mm, and the pitch of ripple is
10~20mm.
Core of the invention is by being formed after multiple heat exchange board stackings by laser welding.It changes as a preferred method,
The surface of hot plate is corrugated surface, can make fluid turbulent to the greatest extent to the greatest extent in this way, to prevent heat exchanger to be blocked.Plate beam core
Generation type are as follows: two circular holes of same position on heat exchanger plates 16 are passed through laser respectively by two 16 coaxial placements of heat exchanger plates
Weld together, form plate pair, constitutes one shell-side runner of formation between two plates of the plate pair；Then by multiple plates pair
The outer circle of adjacent two plate pair is laser welded by coaxial placement, constitutes plate beam 15, structure between two adjacent plates pair
At a plate side runner.Finally, between each two plate of plate centering of plate beam 15 channel constitute shell side passageway, plate pair with
Runner constitutes plate side runner between plate pair.
Referring to figs. 5 and 6, on the basis of the above embodiments, coil pipe tube bank 13 includes multiple is arranged side by side to the present embodiment
Single coil 21, single coil 21 is coiled into a manner of spiral winding by a straight tube, and a coil pipe is opened from coil inlet 20
Begin, a few are wound using the linear formula of screw thread, is finally terminated at coil outlets 19, each coil inlet 20 connects entrance collector tube
18, each 19 connection outlet collector tube 17 of coil outlets；18 connecting tube side liquid entrance 1 of entrance collector tube exports collector tube 17
Connecting tube side liquid outlet 4；The geometric parameter of single coil 21 are as follows: screw pitch is greater than 0.85 times of caliber；Enclosing number is 3~10 circles.
The principle of fluid flowing is in coil pipe tube bank: fluid flows into entrance collector tube 18, distribution by pipe side liquid entrance 1
Into each single coil 21, it is then aggregated into outlet collector tube 17 again, from 4 outflow of pipe side liquid outlet.
Fig. 1 and Fig. 8, the position far from liquid inlet 9, the position of the cloth tube spacing of single coil 21 than close liquid inlet 9
The cloth tube spacing set is big.I.e. by shrinking away from theshell side liquid inlet remote position, biggish cloth tube spacing is given, and will be entered from shell side liquid
Mouthful compared with into position, give lesser cloth tube spacing, the fluid flow into plate interfascicular can be made of substantially equal, improve shell-side stream
Body skewness.
More for plate number, the very long situation of plate beam, shell fluid has very big distribution unevenness.Pass through control panel
In the outside coil tube bank of beam, the spacing between single coil and single coil can improve distribution uneven phenomenon.For example, will be from
Biggish cloth tube spacing is given, it is possible to reduce local resistance in shell fluid import remote position；And by shrinking away from theshell side liquid compared with into
Position gives lesser cloth tube spacing, can increase local resistance.By the method, can to enter the shell-side inside core 5
Fluid flow is evenly distributed.
Referring to Fig. 6, the present embodiment on the basis of the above embodiments, in order to reach optimum efficiency, the spiral shell of single coil 21
Rotation canoe extends out threaded line using taper, and it is since coil inlet 20, to pass through between 30 °~60 ° that taper, which extends out angle,
Arrival coil outlets 19 outside taper.
Referring to Fig. 6 and Fig. 7, on the basis of the above embodiments, single coil 21 is stainless steel tube or copper to the present embodiment
Pipe, the wall thickness of the stainless steel tube are not less than 1.5mm, and the wall thickness of copper pipe is not less than 1.0mm；Pipe 22 and pipe in the single coil
45 ° of corner square arrangements are used between 22；Spacing between pipe 22 and pipe 22 is 6mm or more bigger than each 22 diameter of pipe, pipe 22
It is greater than 1.25 times of 22 outer diameter of pipe with the spacing of pipe 22.
Referring to Fig. 5, on the basis of the above embodiments, coil inlet 20 is between the two sides of entrance collector tube 18 for the present embodiment
Every welding, coil outlets 19 arrange welding along the outer wall straight line of outlet collector tube 17；Two adjacent single coils 21, it is rear to weld
The great circle of the taper coil pipe connect will cover on the ringlet of the preceding taper coil pipe once welded.
Coil pipe tube bank of the invention the production method is as follows: opened on entrance collector tube 18 and outlet collector tube 17 first
Hole.Then single coil is welded to the corresponding position of collector tube one by one.For convenient welding, coil inlet 20 is due to place
In the ringlet of tapered surface, will be welded at the surface two sides interval of collector tube 18；And the outlet of single coil outlet 19 will be along collection
The outer wall straight line of liquid pipe 17 arranges welding.Two adjacent coil pipes, the great circle of the taper coil pipe welded afterwards will be covered in preceding primary weldering
On the ringlet of the taper coil pipe connect.
Referring to Fig. 3, on the basis of the above embodiments, core 5 is connect with shell 7 using flange 10 the present embodiment；Entrance
Collector tube 18 is connected by the first inscribed 11 connecting tube side liquid entrance 1 of flange, outlet collector tube 17 by the second inscribed flange 12
Adapter tube side liquid outlet 4.
The core 5 of heat exchanger referring to fig. 2 is connected with shell 7 using flange 10, and core 5 can release clean and maintenance.It is logical
The first inscribed flange 11 of disassembly and the second inscribed flange 12 are crossed, the separation of plate beam 15 and coil pipe tube bank 13, Jin Erke may be implemented
To carry out clean and maintenance respectively.
Referring to Fig. 3, on the basis of the above embodiments, the heat exchange area of coil pipe tube bank 13 is the heat exchange of plate beam 15 to the present embodiment
The 1/5~1/2 of area；In view of tube bank 13 is with the coefficient of heat transfer difference of plate beam 15, the heat exchange thermic load Zhan of coil pipe tube bank 13 is total
The 5%~30% of thermic load.
The shape that the present invention places the kettle of kettle type reboiler can be cylinder-shaped or partially conical.Conical section usually its
The ratio between outside diameter and end diameter are 1.5~2.0, and connection cone angle is taken as between 25 °~40 °.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (12)
1. a kind of kettle type reboiler of band-tube type, which is characterized in that including shell and be arranged in the intracorporal core of the shell；
The side of the shell is provided with liquid inlet, gas vent and liquid outlet；
The core includes coil pipe tube bank and plate beam, and the plate beam is threaded through in the coil pipe tube bank；
Plate side liquid entrance, the outlet of plate side liquid, pipe side liquid entrance and the outlet of pipe side liquid are provided on the core；
The plate side liquid entrance and the outlet of plate side liquid are connected with the plate beam respectively, the pipe side liquid entrance and pipe side
Fluid outlet is connected with coil pipe tube bank；
One end that the plate beam passes through coil pipe tube bank is equipped with weir plate；
Liquid is injected by liquid inlet in the shell, the liquid is equipped with separated space in the intracorporal ullage of shell, and
According to the requirement of the gas phase fraction of the gas of the gas vent, the submergence height of liquid can be adjusted in the shell.
2. the kettle type reboiler of band-tube type according to claim 1, which is characterized in that the plate beam is multiple connected circles
Shape plate, the coil pipe tube bank are round, oval or rectangular.
3. the kettle type reboiler of band-tube type according to claim 2, which is characterized in that the plate beam includes between muti-piece is laminated
Sealing means between the heat exchanger plates of setting, the heat exchanger plates and heat exchanger plates are using welding.
4. the kettle type reboiler of band-tube type according to claim 3, which is characterized in that the heat exchanger plates are that surface has wave
The corrugated plating of line, the diameter of the heat exchanger plates are 0.2~1.4m, and the ripple's depth of the corrugated plating is~10mm, the section of ripple
Away from for 10~20mm.
5. the kettle type reboiler of band-tube type according to claim 3, which is characterized in that coil pipe tube bank include it is multiple simultaneously
The single coil of setting is arranged, the single coil is coiled into a manner of spiral winding by a straight tube, and a coil pipe enters from coil pipe
Mouth starts, and winds a few using the linear formula of screw thread, finally terminates in coil outlet, and each coil inlet connects entrance collection
Liquid pipe, each coil outlets connection outlet collector tube；The entrance collector tube connects the pipe side liquid entrance, it is described go out
Mouth collector tube connects the pipe side liquid outlet；The geometric parameter of the single coil are as follows: screw pitch is greater than 0.85 times of caliber；Circle
Number is 3~10 circles.
6. the kettle type reboiler of band-tube type according to claim 5, which is characterized in that the position far from the liquid inlet
It sets, the cloth tube spacing of single coil is bigger than the cloth tube spacing of the position close to the liquid inlet.
7. the kettle type reboiler of band-tube type according to claim 5, which is characterized in that the spiral winding of the single coil
Mode extends out threaded line using taper, and it is since coil inlet, to pass through outside taper between 30 °~60 ° that taper, which extends out angle,
Reach coil outlets.
8. the kettle type reboiler of band-tube type according to claim 5, which is characterized in that the single coil is stainless steel tube
Or copper pipe, the wall thickness of the stainless steel tube are not less than 1.5mm, the wall thickness of copper pipe is not less than 1.0mm；It is managed in the single coil
45 ° of corner square arrangements are used between pipe；Spacing between the Guan Yuguan is 6mm or more bigger than each pipe diameter, described
The spacing of Guan Yuguan is greater than 1.25 times of pipe outside diameter.
9. the kettle type reboiler of band-tube type according to claim 5, which is characterized in that the coil inlet is in entrance liquid collecting
The two sides interval of pipe is welded, and the coil outlets arrange welding along the outer wall straight line of outlet collector tube；Adjacent two are single
Coil pipe, the great circle of the taper coil pipe welded afterwards will cover on the ringlet of the preceding taper coil pipe once welded.
10. the kettle type reboiler of band-tube type according to claim 5, which is characterized in that the core and shell use method
Orchid connection；The entrance collector tube passes through second by liquid inlet described in the first inscribed flanged joint, the outlet collector tube
Liquid outlet described in inscribed flanged joint.
11. the kettle type reboiler of -10 described in any item band-tube types according to claim 1, which is characterized in that the coil pipe tube bank
Heat exchange area be plate beam heat exchange area 1/5~1/2；The heat exchange thermic load of coil pipe tube bank account for total heat duties 5%~
30%.
12. the kettle type reboiler of -10 described in any item band-tube types according to claim 1, which is characterized in that the shape of the shell
Shape is cylinder-shaped or partially conical, and the ratio between outside diameter and end diameter of conical section are 1.5~2.0:1, and connection cone angle is
Between 25 °~40 °.
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| CN201610536926.1A CN106075939B (en) | 2016-07-08 | 2016-07-08 | The kettle type reboiler of band-tube type |
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| CN204973095U (en) * | 2015-07-31 | 2016-01-20 | 四川隆桥化工集团有限公司 | Methyl alcohol reboiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205867607U (en) * | 2016-07-08 | 2017-01-11 | 上海齐耀热能工程有限公司 | Kettle -type reboiler of board tubular |
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- 2016-07-08 CN CN201610536926.1A patent/CN106075939B/en active Active
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| US5893411A (en) * | 1996-03-14 | 1999-04-13 | Nir; Ari | Three fluid heat exchanger |
| WO1997049962A1 (en) * | 1996-06-22 | 1997-12-31 | Dickgreber, Johannes | Heat exchanger |
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| CN204630436U (en) * | 2015-03-11 | 2015-09-09 | 张家口科雷传热设备有限公司 | A kind of new type of plate pipe heat exchanger |
| CN204973095U (en) * | 2015-07-31 | 2016-01-20 | 四川隆桥化工集团有限公司 | Methyl alcohol reboiler |
| CN105258536A (en) * | 2015-10-13 | 2016-01-20 | 德艾柯工程技术（上海）有限公司 | Novel all-welding plate shell type heat exchanger |
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