CN101893396B - Quenching boiler provided with enhanced heat transfer member - Google Patents
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- CN101893396B CN101893396B CN200910084549A CN200910084549A CN101893396B CN 101893396 B CN101893396 B CN 101893396B CN 200910084549 A CN200910084549 A CN 200910084549A CN 200910084549 A CN200910084549 A CN 200910084549A CN 101893396 B CN101893396 B CN 101893396B
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- 238000010791 quenching Methods 0.000 title claims abstract description 152
- 230000000171 quenching effect Effects 0.000 title claims abstract description 151
- 238000012546 transfer Methods 0.000 title abstract description 46
- 238000005336 cracking Methods 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 239000004215 Carbon black (E152) Substances 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
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- 230000010354 integration Effects 0.000 claims description 2
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 12
- 239000005977 Ethylene Substances 0.000 abstract description 12
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- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a quenching boiler provided with an enhanced heat transfer member. The quenching boiler comprises a heat exchange pipe and a shell layer. The enhanced heat transfer member is arranged in the heat exchange pipe of the quenching boiler and is arranged at a position where a vapor phase in shell-side fluid of the quenching boiler accounts for less than 5 volume percent of the fluid or at a position where the temperature of the shell-side fluid of the quenching boiler is higher than 520 DEG C. The quenching boiler is applied to an ethylene cracking device, can enhance the heat transfer effect of the quenching boiler, and delays the coking of the quenching boiler so as to prolong the online time of the quenching boiler.
Description
Technical field
The present invention relates to chilling heat transmission equipment supporting in the petrochemical industry ethane cracking furnace.
Background technology
The hydrocarbon cracking raw material carries out the Pintsch process reaction in the tube cracking furnace radiant coil, the temperature of the Pintsch process gas of generation can be up to 800～900 ℃.In order to prevent the generation of secondary response, reduce hydrocarbon loss, Pintsch process gas need get into the chilling zone and cool off fast, reclaims heat energy simultaneously and produces high steam.As everyone knows; Quenching boiler is the important heat transmission equipment that uses in the ethylene cracker chilling zone, generally includes heat exchanger tube and shell, and its heat exchanging part is divided into shell side and tube side; The high-temperature medium that wherein flows in the tube side, promptly 800 ℃～900 ℃ Pintsch process gas mixtures; Cooling medium, i.e. saturation water mixture about 350 ℃ flow in the shell side.The cooling procedure of quenching boiler is roughly following: the Pintsch process gas mixture from radiant coil gets in the heat exchanger tube tube side through the quenching boiler inlet; The water at low temperature of coming from the pyrolysis furnace drum gets into the heat exchanger tube shell side through the shell inlet; Through the partition heat exchange; Cracking gas mixture behind the chilling is through quenching boiler outlet outflow quenching boiler, and the cooling medium after the heat exchange flows out quenching boiler with the form of saturation vapour mixture through the outlet of housing.
Generally speaking, the process in the quenching boiler tube side, cooled off of Pintsch process gas is always with the generation of coking phenomenon.The one, because the Pintsch process gas mixture temperature of inlet is very high, and portion gas has the stop of long period near the heat exchange tube wall, further condensation of unsaturated hydrocarbons wherein and heavy hydrocarbon and decomposition, thus impel the generation of coke; The 2nd, because along with the continuous cooling of Pintsch process gas, high boiling component is condensate on the wall of tube side, carries out the dehydrogenation polycondensation reaction slowly, heaviness gradually becomes the material of tarry or coke shape in succession.Therefore, at the wall of tube side, be easy to form coke layer.The sign of coking is that the tube-surface temperature rises, the quenching boiler outlet temperature rises, increase falls in cracking furnace pipe pressure in the quenching boiler tube side, reaches the coke cleaning of stopping work of will having to behind the certain value.So the coking of quenching boiler also is one of factor of the restriction cracker cycle of operation.
Many researchs show that the coking in the quenching boiler mostly is higher than 600 ℃ zone generation in the cracking gas temperature, and the generation that reaches coking below 600 ℃ when the cracking gas temperature obviously reduces.Reducing and stoping the topmost method of coking is exactly to shorten the time of staying and the gas flow rate that increases the coking zone, just shortens near coking omen body and heavy ends high temperature tube wall and assembles.
The design of traditional quenching boiler is general to require to have following performance: (1) high-quality flow velocity: cracked gas is very fast passes through quenching boiler; To avoid heavy ends and secondary response product on tube wall, to deposit and coking; Generally speaking, the mass velocity of quenching boiler cracking gas side is 50～120kg/ (m
2.s); (2) high pressure water: the water of water side and steam pressure are high in the quenching boiler, in heat transfer process, just can make like this below the unlikely dew-point temperature that drops to cracking gas of tube wall temperature, thereby cause coking.Generally speaking, the pressure of water side is between 8～12Mpa; (3) short residence time: this and high-quality flow velocity are consistent, thereby the short generation that reduces the cracking gas secondary response on the one hand of the time of staying reduces hydrocarbon loss, thereby the generation that can reduce coking on the other hand prolongs the line duration of quenching boiler; (4) low pressure drop: reduce the selectivity that hydrocarbon partial pressure helps improving pyrolysis furnace; Usually the charge gas compressor inlet pressure is a certain value; Therefore the pressure of quenching boiler reduces the pressure that helps reducing the radiant section outlet; Thereby improve the selectivity of cracking, usually, the pressure drop in quenching boiler latter stage is about 0.01Mpa.
The matching used quenching boiler of tube cracking furnace roughly comprises patterns such as bushing type quenching boiler, shell-and-tube quenching boiler, linear quenching boiler.For satisfying above-mentioned quenching boiler designing requirement, in the design of its inlet, generally to avoid the appearance in intake section mobile " dead band ", reduce cracking gas in the time of staying of intake section, strengthen the uniform distribution function of intake section etc.In the design of its heat exchanging part, generally all adopt the less straight tube structure of internal diameter, both can increase heat exchange area, can reduce the time of staying again and reduce pressure drop.
The quenching boiler that adopts straight tube structure is in the commercial Application process, because its calorific intensity is very big, its heat transfer process often can't meet the demands along with the carrying out of using gradually, reaches to use the mechanical decoking of will stopping after the limit.Generally speaking, probably between 6 months to 12 months, every operation will blowing out be carried out waterpower or mechanical decoking to the line duration of present quenching boiler so long.
In sum, because the cycle of operation of quenching boiler and the cycle of operation of pyrolysis furnace involve each other, the quality of the ruuning situation of quenching boiler directly influences the cycle of operation of ethylene unit and the life-span of quenching boiler.Prolong the cycle of operation of quenching boiler, not only can give security, and can reduce the intensification temperature-fall period of quenching boiler, thereby improve the quenching boiler life-span for the cycle of operation that prolongs pyrolysis furnace to greatest extent.
In recent years, the sustainable growth of the energy and Master Cost has promoted the augmentation of heat transfer Study on Technology widely.Adopt effective augmentation of heat transfer technology can improve the heat exchange efficiency of heat exchanger tube inner fluid, positive effect is arranged for heat recovery and energy savings.At present, the augmentation of heat transfer technology of pipe heat exchanger mainly is to increase fluid turbulent degree and expansion heat transfer area through adding member in the shape of heat-transfer area or the pipe, improves heat transfer efficiency, realizes purpose of energy saving.Carry out brief account with regard to present widely used technology below, interior rib structures pipe is widely used, and comprises spiral grooved tube and band pipe, and the band on the tube wall can obviously improve the inside and outside heat transfer coefficient of pipe in the heat transfer that phase transformation and no phase transformation are arranged; Internally finned tube is to form through special welding procedure and apparatus processing, and the heat transfer process of fluid in pipe is single-phase forced-convection heat transfer, and the welding of fin and processing are of great impact for what conduct heat; Insert is under low reynolds number or high viscosity fluid heat-transfer behavior in the pipe, and pluggable unit in pipe can play good effect for the heat transfer of strengthening gas, low reynolds number fluid or high viscosity fluid; The convergent-divergent pipe is that the more piece converging transition and the divergent segment that replace successively constitute, and the convergent-divergent pipe makes the variation of fluid pressure generating period property produce violent whirlpool wash fluid boundary layer through the wall convergent-divergent, and the attenuate boundary layer increases heat transfer coefficient.Although the augmentation of heat transfer of pipe heat exchanger technology kind is a lot, to use also very extensively, these technology of having now also face some puzzles, and mainly is that the processing and manufacturing difficulty is big, expense cost is high.
Because fluid has characteristics such as high-quality flow velocity, high temperature, high pressure, easy coking in the quenching boiler; How existing augmentation of heat transfer technology is applied in the quenching boiler; Thereby effectively improve heat exchange efficiency, reduce coking, prolong the on-line operation cycle, do not appear in the newspapers always.The objective of the invention is to have the quenching boiler that the augmentation of heat transfer technology is applied to ethylene cracker now, and then a kind of quenching boiler that prolongs line duration is provided.
Summary of the invention
The purpose of this invention is to provide a kind of quenching boiler with enhanced heat transfer member.
Quenching boiler of the present invention is in the heat exchanger tube of existing quenching boiler, enhanced heat transfer member to be set, and distortion sheet pipe preferably is set, thereby strengthens the diabatic process of quenching boiler, reduces coking, prolongs the line duration of quenching boiler.
Concrete, quenching boiler of the present invention comprises heat exchanger tube and shell, in the heat exchanger tube of described quenching boiler, enhanced heat transfer member is set; And described enhanced heat transfer member is arranged on percent by volume that vapour phase in the said quenching boiler shell-side fluid accounts for said fluid and is higher than 520 ℃ position less than 5% position or said quenching boiler tube side fluid temperature.
Generally speaking, the cracking gas of being drawn by pyrolysis furnace is the highest in the temperature of quenching boiler porch, and along with the tube side of cracking gas along quenching boiler advances, temperature of cracking gas descends gradually, and the shell side mesohigh water of quenching boiler is vaporized gradually.Therefore; In quenching boiler of the present invention, be said enhanced heat transfer member to be arranged on percent by volume that vapour phase in tube side porch and the said quenching boiler shell-side fluid accounts for said fluid be about between the position that 5% position or said quenching boiler tube side fluid temperature be about 520 ℃.Like this, can strengthen the diabatic process in this part heat exchanger tube like distortion sheet pipe through adding enhanced heat transfer member, and the coking that slows down this part heat exchanger tube; Simultaneously, because the water under high pressure of shell side is before its vaporization 5%, the heat transmission resistance of shell side is relatively large, through add enhanced heat transfer member as distortion sheet pipe can strengthening heat transfer to increase total heat transfer coefficient.
When practical implementation of the present invention; Quenching boiler tube side cracking gas temperature distribution history can be passed through in the position that enhanced heat transfer member is set; Find tube side cracked gas stream temperature or the corresponding position of shell-side fluid liquid phase vaporization rate; Take the characteristics that the manually-operated that makes things convenient for coke-removing procedure and enhanced heat transfer member need be installed in the straight length place again into consideration, confirm the implantation site that adds of enhanced heat transfer member.Concrete; Can obtain the tube side cracked gas stream net quantity of heat that needs shell side gas-vapor mix is taken away in quenching boiler according to tube side cracking gas flow, pressure and temperature; Through heat balance, obtain the corresponding relation of shell side water under high pressure vaporization rate and tube side cracking gas temperature; Again according to quenching boiler tube side cracking gas temperature and the change curve of the cracking gas time of staying and tube side cracking gas flow, the tube side cracked gas stream obtained desired location at last in the time of staying of the tube side of this quenching boiler and the linear velocity of tube side air-flow when pressure and temperature obtained this temperature.Usually under the situation that the parameter of pyrolysis furnace and quenching boiler is confirmed, quenching boiler tube side temperature of cracking gas changes with the curve of the cracking gas time of staying also to be confirmed.Fig. 4 has listed under the process conditions same case, the temperature variation curve of several kinds of different quenching boilers.
General, the percent by volume that vapour phase accounts for said fluid in the quenching boiler shell-side fluid be about position that 5% position or said quenching boiler tube side fluid temperature be about 520 ℃ apart from the about 120D in tube side porch with interior position; Therefore, in quenching boiler of the present invention, preferably said enhanced heat transfer member is arranged on apart between the 20D to 110D of tube side porch.
Preferably, enhanced heat transfer member is arranged on the position apart from the about 30D to 70D in tube side porch, D is the internal diameter of quenching boiler heat exchanger tube.
In the practical implementation of quenching boiler of the present invention, enhanced heat transfer member is set respectively all in every heat exchanger tube usually.
In quenching boiler of the present invention, described enhanced heat transfer member preferably uses distortion sheet pipe.More preferably described distortion sheet pipe comprises built-in distortion sheet, and said distortion sheet is along the inside that axially is at least partially disposed on this pipe of distortion sheet pipe, and described distortion sheet is made into integration with distortion sheet pipe.Like the disclosed heat-exchange tube of CN1260469A.CN1260469A introduces in this specification as a reference in full.
In practical implementation of the present invention, the distortion ratio of preferred described distortion sheet pipe is 2～20, and distortion angle is 90 °～180 °.
In another preferred embodiment of the present invention, the distortion ratio of described distortion sheet pipe is 2～12, more preferably 3～6.
In quenching boiler of the present invention; The distortion sheet pipe that use has bigger distortion ratio is to fall owing to during the mechanical decoking of pyrolysis furnace quenching boiler, having coke button; If the distortion of distortion sheet pipe is smaller; Then falling of this coke button may cause the quenching boiler tube side to be blocked, and strengthens distortion than reducing the possibility that this situation takes place; And distortion has increased heat transfer area simultaneously than strengthening, process that also can augmentation of heat transfer.The distortion sheet that use has less distortion angle also is from same consideration.
Said in the present invention distortion sheet is meant the axial length of 180 ° of distortion sheet distortions and the ratio of the internal diameter of distortion sheet pipe.
In practical implementation of the present invention, can in every heat exchanger tube of quenching boiler, add several above-mentioned distortion sheet pipes, as 1-6.
Preferably in every heat exchanger tube, only add a distortion sheet pipe.This mainly be since the position that distortion sheet pipe is set near the tube side porch; The cracking gas temperature is higher in the tube side porch; Extratubal fluid undergoes phase transition process in the porch; Its heat transmission resistance concentrates in the heat exchanger tube, and the diabatic process of strengthening in this part pipe is not only helpful to conducting heat, and helps to reduce the generation of coking process.The more important thing is; Only add a distortion sheet guarantee demonstrate,proved during mechanical decoking can from top with below carry out mechanical decoking; The overwhelming majority that so just can guarantee quenching boiler can reach by mechanical decoking, avoided thoroughly mechanical decoking and quenching boiler cycle of operation of causing reduces.
The material of the distortion sheet pipe that uses in the preferred quenching boiler of the present invention is identical with the material of heat exchanger tube.When concrete the use, can be connected in the said heat exchanger tube through the method for welding.
The present invention has no particular limits for the pattern of quenching boiler; Can in the quenching boiler of existing various types, enhanced heat transfer member be set; Like traditional quenching boiler, bathtub shaped quenching boiler, the linear quenching boiler that in ethylene cracker, uses, also can be used for two bushing type quenching boilers, semi-spiral tubular type quenching boiler, U type tubular type quenching boiler etc.The position that enhanced heat transfer member is set in above-mentioned related quenching boiler does not have too big difference, selects suitable position to get final product according to its temperature variation curve.
Another kind of quenching boiler provided by the invention is that enhanced heat transfer member is arranged on every heat exchanger tube of quenching boiler apart between the about 20D～110D of tube side inlet.
Preferably every heat exchanger tube at described quenching boiler is provided with distortion sheet pipe apart from tube side inlet about 30D～70D place.
Another object of the present invention provides the application of above-mentioned quenching boiler in the supporting chilling heat exchange of hydrocarbon cracking stove.
The beneficial effect that quenching boiler of the present invention has is following:
1, quenching boiler of the present invention through enhanced heat transfer member is set, has been strengthened the heat-transfer effect of heat exchanger tube, has delayed the coking of quenching boiler, thereby has prolonged the line duration of quenching boiler.
2, quenching boiler of the present invention is applied to ethylene cracker, because it has effectively prolonged the on-line operation cycle, so, for the cycle of operation that prolongs pyrolysis furnace to greatest extent provides assurance.
3, the line duration owing to quenching boiler of the present invention prolongs, thereby has reduced the heating and cooling of quenching boiler and the number of times of coke cleaning, thus the life-span of effectively having improved quenching boiler.
Description of drawings
Fig. 1 is the sketch map that linear quenching boiler is used distortion sheet pipe.
Fig. 2, the 3rd, the section and the cross sectional representation of distortion sheet pipe.
Fig. 4 is the cracking gas temperature of several kinds of quenching boilers and the curve map of the time of staying.Wherein, 1 is the thimble tube quenching boiler, and 2 is rapid quench type boiler, and 3 is the bathtub shaped quenching boiler, and 4 is traditional quenching boiler.
The specific embodiment
Further describe the present invention below in conjunction with embodiment.Scope of the present invention does not receive the restriction of these embodiment, and scope of the present invention proposes in claims.
The distortion sheet pipe that uses in an embodiment of the present invention is the distortion sheet pipe according to different distortion ratios of having of the disclosed heat-exchange tube manufacturing of CN1260469A and distortion angle, and the material of the material of distortion sheet pipe and quenching boiler is identical.
In the present invention, SOR is meant initial operating stage, and EOR is meant and moves latter stage.
The temperature variation curve of related bathtub shaped quenching boiler uses curve 3 among Fig. 4 in embodiments of the invention and Comparative Examples.
Comparative Examples 1
Bathtub shaped quenching boiler so that distortion sheet pipe not to be set is an example, is applied to an ethylene production capacity and is 100,000 tons/year pyrolysis furnace.The size and the parameter of quenching boiler are seen table 1, and technological parameter is seen table 2.The pyrolysis furnace raw material is hydrogenation tail oil (hereinafter to be referred as HVGO).
The structural parameters of table 1 quenching boiler
| Project | Comparative Examples 1 | Embodiment 1 | Remarks |
| Tube side length (mm) | 7300 | 7300 | |
| Tube side internal diameter (mm) | 41 | 41 | |
| Tube side wall thickness (mm) | 5 | 5 | |
| Distortion sheet pipe | Do not have | Have | |
| Distortion sheet pipe position (mm) | 2300 | Enter the mouth apart from tube side | |
| The distortion ratio | -- | 4.0 | |
| Distortion angle | -- | 180 |
Embodiment 1
Present embodiment is to use the bathtub shaped quenching boiler identical with Comparative Examples 1, in an ethylene production capacity is 100,000 tons/year pyrolysis furnace, is equipped with quenching boiler of the present invention, and its size and parameter are seen table 1, and technological parameter is seen table 2.The pyrolysis furnace raw material is HVGO.
The technological parameter of table 2 quenching boiler
Obtain the temperature value that the shell side water under high pressure was vaporized at 5% o'clock according to the quenching boiler temperature variation curve of bathtub shaped shown in Fig. 4 and tube side cracking gas flow, pressure and temperature computation, extrapolate the time of staying of the corresponding tube side cracked gas stream of this temperature at the tube side of this quenching boiler; Obtain the linear velocity of cracked gas stream again according to cracking gas flow, pressure and temperature; The vaporization rate that can know the shell side water under high pressure at last is 5% position for apart from the about 80D of tube side inlet place, and consideration coke cleaning and easy to operate reason will be twisted the sheet pipe and be located at apart from 2300mm place, tube side porch.
Compare with Comparative Examples 1, under identical process conditions, add quenching boiler line duration behind the distortion sheet pipe and prolong approximately 40%, and the heat in its operation latter stage increases to some extent, and this its inner coking of explanation is lacked than Comparative Examples 1.
Comparative Examples 2
This Comparative Examples is that an ethylene production capacity is 100,000 tons/year a pyrolysis furnace, and the quenching boiler of its outfit is the bathtub shaped quenching boiler, and its size and parameter are seen table 3, and technological parameter is seen table 4.The pyrolysis furnace raw material is naphtha (hereinafter to be referred as NAP).
The structural parameters of table 3 quenching boiler
| Project | Comparative Examples 2 | Embodiment 2 | Remarks |
| Tube side length (mm) | 7300 | 7300 | |
| Tube side internal diameter (mm) | 41 | 41 | |
| Tube side wall thickness (mm) | 5 | 5 | |
| Distortion sheet pipe | Do not have | Have | |
| Distortion sheet pipe position (mm) | -- | 2300 | Enter the mouth apart from tube side |
| The distortion ratio | -- | 4.0 | |
| Distortion angle | -- | 180 |
The technological parameter of table 4 quenching boiler
Embodiment 2
Present embodiment is that an ethylene production capacity is 100,000 tons/year a pyrolysis furnace, and the bathtub shaped quenching boiler of outfit is a quenching boiler of the present invention, and its size and parameter are seen table 3, and technological parameter is seen table 4.The pyrolysis furnace raw material is NAP.
Can calculate the temperature value that the shell side water under high pressure was vaporized at 5% o'clock according to temperature variation curve shown in Fig. 4 and tube side throughput, pressure and temperature; The tube side cracked gas stream is in the time of staying of the tube side of this quenching boiler when extrapolating this temperature; Thereby can calculate the vaporization rate that can know apart from the about 90D of tube side inlet place shell side water under high pressure according to the linear velocity of air-flow is 5%, and consideration coke cleaning and easy to operate reason will be twisted the sheet pipe and be located at apart from 2300mm place, tube side porch.
Compare with Comparative Examples 2, add quenching boiler line duration behind the distortion sheet pipe and prolong approximately 50%, and the heat in its operation latter stage increases to some extent, and this its inner coking of explanation is lacked than Comparative Examples 2.
Comparative Examples 3
This Comparative Examples is that an ethylene production capacity is 100,000 tons/year a pyrolysis furnace, and the quenching boiler of its outfit is the bathtub shaped quenching boiler, and its size and parameter are seen table 5, and technological parameter is seen table 6.The pyrolysis furnace raw material is NAP.
Compare with Comparative Examples 2, the quenching boiler line duration behind the adding distortion sheet pipe slightly prolongs, but compares with embodiment 3, and its line duration is shorter, and this its inner coking situation of explanation is better than Comparative Examples 2, but will be worse than embodiment 3.
Embodiment 3
Present embodiment is that an ethylene production capacity is 100,000 tons/year a pyrolysis furnace, and the bathtub shaped quenching boiler of its outfit is a quenching boiler of the present invention, and its size and parameter are seen table 5, and technological parameter is seen table 6.The pyrolysis furnace raw material is NAP.
The tube side air-flow is in the time of staying of the tube side of this quenching boiler in the time of can obtaining 520 ℃ according to the quenching boiler of bathtub shaped shown in Fig. 4 temperature variation curve, thereby can calculate this position according to the linear velocity of tube side air-flow.Can know be about 520 ℃ apart from the about 115D of tube side inlet place tube side inner fluid temperature, consideration coke cleaning and easy to operate reason will be twisted the sheet pipe and be located at apart from 1600mm place, tube side porch.
Compare with Comparative Examples 2, add quenching boiler line duration behind the distortion sheet pipe and prolong approximately 40%, this its inner coking situation of explanation is better than Comparative Examples 2.Compare with Comparative Examples 3, it is about 15% that the quenching boiler line duration of embodiment 3 prolongs, and this its inner coking situation of explanation is better than Comparative Examples 3.
The structural parameters of table 5 quenching boiler
| Project | Comparative Examples 3 | Embodiment 3 | Remarks |
| Tube side length (mm) | 7300 | 7300 | |
| Tube side internal diameter (mm) | 41 | 41 | |
| Tube side wall thickness (mm) | 5 | 5 | |
| Distortion sheet pipe | Have | Have | |
| Distortion sheet pipe position (mm) | 5200 | 1600 | Enter the mouth apart from tube side |
| The distortion ratio | 3.0 | 3.0 | |
| Distortion angle | 120 | 120 |
The technological parameter of table 6 quenching boiler
Claims (9)
1. quenching boiler; Comprise heat exchanger tube and shell; It is characterized in that: 1 distortion sheet pipe is set in the every heat exchanger tube of described quenching boiler, and described distortion sheet pipe is arranged on percent by volume that vapour phase in the said quenching boiler shell-side fluid accounts for said fluid and is higher than 520 ℃ position less than 5% position or said quenching boiler tube side fluid temperature.
2. quenching boiler according to claim 1; It is characterized in that: described distortion sheet pipe comprises built-in distortion sheet; Said distortion sheet is along the inside that axially is at least partially disposed on this pipe of distortion sheet pipe, and described distortion sheet is made into integration with distortion sheet pipe.
3. quenching boiler according to claim 1 and 2 is characterized in that: the distortion ratio of described distortion sheet pipe is 2～20, and distortion angle is 90 °～180 °.
4. quenching boiler according to claim 3 is characterized in that: the distortion ratio of described distortion sheet pipe is 2～12.
5. quenching boiler according to claim 4 is characterized in that: the distortion ratio of described distortion sheet pipe is 3～6.
6. quenching boiler according to claim 1 is characterized in that: the material of described distortion sheet pipe is identical with the material of heat exchanger tube.
7. quenching boiler according to claim 1 is characterized in that: apart from the tube side 20D～110D place that enters the mouth the distortion sheet is set at every heat exchanger tube of described quenching boiler.
8. quenching boiler according to claim 7 is characterized in that: apart from the tube side 30D～70D place that enters the mouth the distortion sheet is set at every heat exchanger tube of described quenching boiler.
9. the application of the described quenching boiler of one of claim 1-8 in the supporting chilling heat exchange of hydrocarbon cracking stove.
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| CN200910084549A CN101893396B (en) | 2009-05-21 | 2009-05-21 | Quenching boiler provided with enhanced heat transfer member |
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| CN200910084549A CN101893396B (en) | 2009-05-21 | 2009-05-21 | Quenching boiler provided with enhanced heat transfer member |
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| CN101893396B true CN101893396B (en) | 2012-10-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103788984A (en) * | 2012-10-30 | 2014-05-14 | 中国石油化工股份有限公司 | Millisecond furnace and its use in chemical engineering field |
| CN103791483B (en) * | 2012-10-30 | 2020-02-18 | 中国石油化工股份有限公司 | Styrene heating furnace and application thereof in chemical field |
| CN103791761B (en) * | 2012-10-30 | 2018-02-13 | 中国石油化工股份有限公司 | Quenching boiler and its application |
| CN105627749B (en) * | 2014-10-28 | 2018-06-12 | 中国石油化工股份有限公司 | A kind of tubular heater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2164537Y (en) * | 1993-04-19 | 1994-05-11 | 上海船用柴油机研究所 | Quick cooling heat exchanger for cracking gas |
| CN1260469A (en) * | 1998-09-16 | 2000-07-19 | 中国石油化工集团公司 | Heat exchange pipe and its manufacture method and application |
-
2009
- 2009-05-21 CN CN200910084549A patent/CN101893396B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2164537Y (en) * | 1993-04-19 | 1994-05-11 | 上海船用柴油机研究所 | Quick cooling heat exchanger for cracking gas |
| CN1260469A (en) * | 1998-09-16 | 2000-07-19 | 中国石油化工集团公司 | Heat exchange pipe and its manufacture method and application |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-83352A 1999.03.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101893396A (en) | 2010-11-24 |
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