CN1730449A - Two procedure radiation furnace tube of novel structure and arrangement - Google Patents
Two procedure radiation furnace tube of novel structure and arrangement Download PDFInfo
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- CN1730449A CN1730449A CN 200510089081 CN200510089081A CN1730449A CN 1730449 A CN1730449 A CN 1730449A CN 200510089081 CN200510089081 CN 200510089081 CN 200510089081 A CN200510089081 A CN 200510089081A CN 1730449 A CN1730449 A CN 1730449A
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Abstract
The disclosed radiation furnace pipe for pyrolysis furnace comprises a 1-1 type arranged radiation furnace tubes consisting an induction pipe and an outlet pipe, and a 2-1 type arranged radiation furnace tubes consisting two parallel induction pipes and an outlet pipe, wherein the induction pipe the outlet pipe are on a common plane surface, the bottom portions of the induction pipes and the outlet pipes are connected with a three-dimensional U-shaped connection piece. The invention can achive more homogeneous temperature distribution in the radiation chamber.
Description
Technical field
The present invention relates to two kinds of ethane cracking furnace hyperthermia radiation boiler tubes.
Background technology
Since the vertical sus-pension pyrolyzer of the radiating furnace tube sixties in last century was succeeded in developing, the cracking of ethylene technology was developing always.As shortening the residence time, improving the cracking selectivity, improving product yield, reducing product energy consumption and strengthen the aspects such as adaptability of cracking stock are studied, developed.Up to the present, 99% of world Ethylene output all is to adopt the petroleum fractions heat scission reaction to produce, and the equipment of bearing this heat scission reaction is exactly pyrolyzer.
As everyone knows, ethane cracking furnace is the equipment of most critical in the ethylene unit, and the investment of pyrolyzer accounts for about 20～25% of whole ethylene unit usually, and one of equipment of most critical is exactly radiating furnace tube in the ethane cracking furnace.Therefore, the pyrolyzer development of technology is embodied in the structure of radiating furnace tube and the aspect of arranging more.The development of radiating furnace tube experienced by multipass not the reducing boiler tube, develop into multipass branch adapter bonnet up till now mainly based on two journey branch adapter bonnets.This makes the residence time of material in radiating furnace tube shorter, and the yield of purpose products such as alkene is higher.
Two at present main journey branch reducings mainly contain patterns such as 1-1,2-1,4-1, adopt the pyrolyzer patent merchant of 1-1 type radiating furnace tube to mainly contain the Technip company of France and the Stone ﹠amp of the U.S.; Webster company adopts the pyrolyzer patent merchant of 2-1 type boiler tube to mainly contain French Technip, the Linde company of the China PetroChemical Corporation of China and Germany, the Lummus company that the U.S. is arranged that adopts 4-1 type radiating furnace tube.
But all there are some defectives to some extent in present these two journey branch adapter bonnets.GK-VI pyrolyzer as the Technip company of France adopts 1-1 type radiating furnace tube, shown in Fig. 3 A, Fig. 3 B, Fig. 3 C, it adopts double arrangement mode in radiation chamber, the inlet pipe 1 of same 1-1 type boiler tube and outlet pipe 2 be not on same plane, inlet pipe 1 centralized arrangement together, outlet pipe 2 centralized arrangement together, thereby in radiation chamber, form two planes, promptly first stroke radiation furnace tube in one plane, second stroke radiation furnace tube is on another and previous parallel plane plane.Because the characteristic of radiative transfer, the two rows radiating furnace tube on two planes are respectively blocked mutually, this can make circumferentially being heated of radiating furnace tube inhomogeneous, there is the significant circumferentially temperature difference in boiler tube, this temperature difference can not be ignored for temperature and all higher outlet pipe of hot strength, and it is that the cycle of operation of pyrolyzer is shortened to the remarkable influence of pyrolyzer, the radiating furnace tube distortion is serious, and shorten the work-ing life of radiating furnace tube.
The Stone ﹠amp of the U.S.; The USC pyrolyzer of Webster company also adopts 1-1 type radiating furnace tube, shown in Fig. 4 A, Fig. 4 B, Fig. 4 C.The PyroCrack1-1 type cracking furnace pipe of the CBL-III type stove of GK-V type pyrolyzer, the China PetroChemical Corporation of the Technip company of France and German Linde company, these pyrolyzer all adopt 2-1 type boiler tube, shown in Fig. 5 A, Fig. 5 B, Fig. 5 C, promptly for each 2-1 type boiler tube, its inlet pipe has two parallel boiler tubes, and outlet pipe has only a boiler tube.The radiating furnace tube of these type of furnaces all is to adopt the part inlet pipe concentrated to put together, the section port pipe is concentrated and is put together, this can make the heat transfer efficiency of inlet pipe further reduce, and the pipe surface temperature of outlet pipe further raises, cause the tube wall temperature difference of import and outlet pipe further to strengthen, the difference of the thermal expansion amount between the import and export pipe is further strengthened, and this operation to pyrolyzer is obviously unfavorable.1-1 type shown in above-mentioned Fig. 4 A and Fig. 5 A and 2-1 type radiating furnace tube, its import boiler tube and outlet boiler tube are all in one plane, but the bottom linker between its import boiler tube and the outlet boiler tube adopts the boiler tube place planar cross-over connection mode that deflects away from, i.e. import boiler tube is when distance radiation chamber furnace bottom certain altitude, depart from away by plane, boiler tube place, return the plane at boiler tube place through bottom linker, though arranging like this can make radiating furnace tube circumferentially be heated evenly, but because radiating furnace tube and bottom linker are not in one plane, make radiating furnace tube be subjected to an extra eccentric force, can prove by a large amount of production practice, radiating furnace tube is subjected to small eccentric force and all occurs bending and deformation easily under high-temperature condition, this will have a strong impact on the cycle of operation and the work-ing life of radiating furnace tube.
The radiating furnace tube of existing two kinds of arrangements, its another feature is that inlet pipe is located at inlet pipe, outlet pipe is located at outlet pipe, this can make the heat transfer efficiency of inlet pipe further reduce, and the pipe surface temperature of outlet pipe further raises, this will make the tube wall temperature difference of import and outlet pipe strengthen, and is unfavorable to the operation of pyrolyzer.
This shows that still there are some problems in the pyrolyzer promoted the use of of each pyrolyzer patent merchant at present, need further to improve and perfect.
Summary of the invention
For the syndeton that overcomes existing radiating furnace tube and arrangement mode make the boiler tube inequality of being heated, easily produce flexural deformation, make the deficiency of the shortening in work-ing life of boiler tube, the objective of the invention is to: the two procedure radiation furnace tube that a kind of novel texture is provided and arranges, this radiating furnace tube can make radiating furnace tube circumferentially be heated evenly, eliminated the additional force of the off-centre of bottom linker simultaneously to radiating furnace tube, avoid radiating furnace tube flexural deformation, prolong the cycle of operation of pyrolyzer, prolong the work-ing life of radiating furnace tube.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of novel texture and the two procedure radiation furnace tube of arranging, it comprises the two journey boiler tubes of being made up of inlet pipe and outlet pipe, at inlet pipe and outlet pipe bottom web member is housed, form the radiating furnace tube that each 1-1 type is arranged by an inlet pipe and an outlet pipe, this 1-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, plane, radiating furnace tube place and convection zone place plane parallel, planar both sides, radiating furnace tube place are provided with base burning device and radiant wall burner, also can not have radiant wall burner; Each root outlet pipe links to each other with a line style quenching boiler, and inlet pipe links to each other across pipe with the pyrolyzer charging.Described inlet pipe and outlet pipe are on same plane, and the web member of inlet pipe and outlet pipe bottom is a symmetric U type pipe connections, fixedly connected with the outlet pipe bottom with the inlet pipe bottom respectively in the two ends, top of this U type pipe connections; This U type pipe connections is a three-dimensional arrangement part, is the plane of symmetry with inlet pipe and plane, outlet pipe place, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions; The import of described 1-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in each root outlet pipe both sides is an inlet pipe.
Another kind of solution of the present invention is:
A kind of novel texture and the two procedure radiation furnace tube of arranging, it comprises the two journey boiler tubes of being made up of inlet pipe, outlet pipe, at inlet pipe and outlet pipe bottom web member is housed, form the radiating furnace tube that each 2-1 type is arranged by two parallel inlet pipes and an outlet pipe, this 2-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, plane, radiating furnace tube place and convection zone place plane parallel, planar both sides, radiating furnace tube place are provided with base burning device and radiant wall burner, also can not have radiant wall burner; Each root outlet pipe links to each other with a linear quenching boiler, and inlet pipe links to each other across pipe with the pyrolyzer charging.Described inlet pipe and outlet pipe are on same plane, and the web member of inlet pipe and outlet pipe bottom is a symmetric U type pipe connections, and top one end of this U type pipe connections is fixedlyed connected with the outlet pipe bottom; The bottom of two inlet pipes connects a special three-way piece, and the outlet of special three-way piece is fixedlyed connected with the top the other end of U type pipe connections; This U type pipe connections is a three-dimensional arrangement part, is the plane of symmetry with inlet pipe and plane, outlet pipe place, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions; The import of described 2-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in the both sides of each root outlet pipe is an inlet pipe, between per two outlet pipes two inlet pipes is arranged.
1-1 type and 2-1 type pyrolyzer radiating furnace tube that the present invention adopts, its inlet pipe and outlet pipe are all in one plane, it is more even that this will make radiating furnace tube circumferentially be heated, avoided inhomogeneous owing to circumferentially being heated as the radiating furnace tube of double arrangement, and bigger circumferential temperature head appears, cause the phenomenon of the crooking of the tubes easily.The inlet pipe of 1-1 type radiating furnace tube of the present invention is downward earlier by the top of radiation chamber, when distance furnace bottom certain altitude, depart from plane, radiating furnace tube place, at bottom process U type pipe connections, cross over the boiler tube medullary ray to opposite side from boiler tube place planar one side, and then get back to the plane at boiler tube place.The inlet pipe of 2-1 type radiating furnace tube of the present invention is downward earlier by the top of radiation chamber, when distance furnace bottom certain altitude, two inlet pipes merge becomes a boiler tube, this root boiler tube continues downwards, depart from plane, radiating furnace tube place then, through U type pipe connections, cross over the boiler tube medullary ray to opposite side from boiler tube place planar one side in the bottom, and then get back to the plane at boiler tube place, continue upwards to go out radiation chamber to furnace roof.Therefore the bottom U type pipe connections of this 1-1 type and 2-1 type radiating furnace tube, for the plane at inlet pipe and outlet pipe place, does not have extra eccentric force problem, thereby has avoided the flexural deformation of radiating furnace tube with boiler tube place plane symmetry.
Compared with prior art, the invention has the beneficial effects as follows:
1,1-1 type of the present invention and 2-1 type radiating furnace tube all have mechanical characteristic of simple structure, adopt single arrangement be 1-1 type or 2-1 type radiating furnace tube import and the outlet all in one plane, it is more even that this will make radiating furnace tube circumferentially be heated, avoided inhomogeneous owing to circumferentially being heated, and the phenomenon that big circumferentially temperature head causes the crooking of the tubes easily occurred as the radiating furnace tube of double arrangement.Its outlet pipe is connected simply with the line style quenching boiler, convenience.
2, because the bottom employing of import and outlet boiler tube is symmetric U type pipe connecting structure with plane, radiating furnace tube place, do not have extra eccentric force, avoided the flexural deformation of radiating furnace tube effectively for radiating furnace tube.Another effect of bottom U type pipe connecting structure is " flexible joint " that has realized import, exported the boiler tube bottom in addition, thermal walking difference and high temperature creep that the U type tubular construction of bottom can partly absorb between import, outlet boiler tube are poor, and be very favourable to the distortion that reduces radiating furnace tube.
3, because the pipe surface temperature of inlet pipe is lower, the pipe surface temperature of outlet pipe is higher, adopt the import and the outlet staggered pattern of radiating furnace tube of the present invention, can make the lower inlet pipe of temperature obtain " heating " of the higher outlet pipe of temperature, equally, the higher outlet pipe of temperature can obtain " cooling " of the lower inlet pipe of temperature, import and export the result of this " cooling " " heating " mutually of pipe effect, can make the flue-gas temperature of burner hearth more even, import, pipe surface temperature difference between outlet pipe is littler, to prolonging the cycle of operation of pyrolyzer, the work-ing life that prolongs radiating furnace tube is highly beneficial.
Description of drawings
Figure 1A is that pyrolyzer of the present invention is looked synoptic diagram with first kind of novel texture of two journey 1-1 type radiating furnace tubes and the master who arranges
Fig. 1 F is the schematic top plan view of Figure 1A
Figure 1B is that second kind of novel texture of 1-1 type radiating furnace tube of the present invention and the master who arranges look synoptic diagram
Fig. 1 G is the schematic top plan view of Figure 1B
Fig. 1 C is that the third novel texture of 1-1 type radiating furnace tube of the present invention and the master that arranges look and show and boil figure
Fig. 1 H is the schematic top plan view of Fig. 1 C
Fig. 1 D is that the 4th kind of novel texture of 1-1 type radiating furnace tube of the present invention and the master who arranges look synoptic diagram
Fig. 1 I is the schematic top plan view of Fig. 1 D
Fig. 1 E is the schematic side view of Figure 1A, Figure 1B, Fig. 1 C, Fig. 1 D
Fig. 2 A is that first kind of novel texture of the present invention's two journey 2-1 type radiating furnace tubes and the master who arranges look synoptic diagram
Fig. 2 E is the schematic top plan view of Fig. 2 A
Fig. 2 B is that second kind of novel texture of 2-1 type radiating furnace tube of the present invention and the master who arranges look synoptic diagram
Fig. 2 F is the schematic top plan view of Fig. 2 B
Fig. 2 C is that the third novel texture of 2-1 type radiating furnace tube of the present invention is looked synoptic diagram with the master who arranges
Fig. 2 G is the schematic top plan view of Fig. 2 C
Fig. 2 D is the schematic side view of Fig. 2 A, Fig. 2 B, Fig. 2 C
Fig. 3 A is that the structure of existing double arrangement 1-1 type radiating furnace tube and the master who arranges look synoptic diagram
Fig. 3 B is the schematic top plan view of Fig. 3 A
Fig. 3 C is the schematic side view of Fig. 3 A
Fig. 4 A is that the structure of existing single arrangement 1-1 type radiating furnace tube and the master who arranges look synoptic diagram
Fig. 4 B is the schematic top plan view of Fig. 4 A
Fig. 4 C is the schematic side view of Fig. 4 A
Fig. 5 A is that the structure of existing single arrangement 2-1 type radiating furnace tube and the master who arranges look synoptic diagram
Fig. 5 B is the schematic top plan view of Fig. 5 A
Fig. 5 C is the schematic side view of Fig. 5 A
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Figure 1A, Figure 1B, Fig. 1 C, Fig. 1 D are depicted as the four kinds of novel textures of first embodiment of two procedure radiation furnace tube of the present invention and the synoptic diagram of arranging.This embodiment forms the radiating furnace tube that each 1-1 type is arranged by an inlet pipe 1 and an outlet pipe 2, this 1-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, planar both sides, radiating furnace tube place are provided with base burning device and radiant wall burner, also can not have radiant wall burner.Generally, shown in Figure 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, can per 1,3,5 or 7 1-1 type boiler tubes be one group, in radiation chamber, can arrange the such 1-1 type radiating furnace tubes of many groups.Each outlet pipe links to each other with the anxious cool boiler of a line style, and inlet pipe links to each other across pipe with the pyrolyzer charging.
The inlet pipe 1 of 1-1 type radiating furnace tube of the present invention and outlet pipe 2 are on same plane, the bottom of inlet pipe 1 and outlet pipe 2 is connected a symmetric U type pipe connections 3, the two ends at the top of these U type pipe 3 web members link together by the mode of welding with inlet pipe 1 bottom and outlet pipe 2 bottoms respectively, this U type pipe connections 3 is a three-dimensional arrangement part, with inlet pipe 1 and plane, outlet pipe 2 place is the plane of symmetry, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions; The import of described 1-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in each root outlet pipe 2 both sides is an inlet pipe 1.
Generally, the internal diameter of 1-1 type radiating furnace tube inlet pipe of the present invention is 30～60mm, and preferred value is 35～55mm, and more preferably value is 40～50mm; The internal diameter of outlet pipe is 40～80mm, and preferred value is 50～70mm, and more preferably value is 55～65mm; Tube pitch between per two radiating furnace tubes is 1.0～3.0 with the ratio of boiler tube mean outside diameter, and preferred value is 1.5～2.5, and more preferably value is 1.8～2.2; The inlet pipe of the equivalent length of U type pipe connections and the length of outlet pipe are generally 9～15m bottom comprising, preferred value is 10～14m, and more preferably value is 11～13m.
Pyrolyzer with 100,000 tons of annual output ethene is an example, and its radiation chamber can be arranged 80 1-1 type radiating furnace tubes of the present invention, and 1-1 type boiler tube adopts single, the staggered arrangement mode of import and export pipe of the present invention; The internal diameter of inlet pipe is 45～50mm, and length is 12.5m; The internal diameter of outlet pipe is 58～63mm, and length is 12.5m; The span width of radiation chamber is 3.0m, and the free length of radiation chamber is 17.5m, and the free height of radiation chamber is 13m.
Fig. 2 A, Fig. 2 B, Fig. 2 C are depicted as the three kinds of structures and the synoptic diagram of arranging of second embodiment of two procedure radiation furnace tube of the present invention, this embodiment forms the radiating furnace tube that each 2-1 type is arranged by two parallel inlet pipes 1 and an outlet pipe 2, this 2-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, planar both sides, radiating furnace tube place are provided with base burning device and radiant wall burner, also can not have radiant wall burner.Generally, shown in Fig. 2 A, 2B, 2C, 2D, 2E, 2F, 2G, can per 1,3 or 5 2-1 type boiler tubes be one group, in radiation chamber, can arrange the such 2-1 type radiating furnace tubes of many groups.Each outlet pipe links to each other with the anxious cool boiler of a line style, and inlet pipe links to each other across pipe with the pyrolyzer charging.
The inlet pipe 1 of 2-1 type radiating furnace tube of the present invention and outlet pipe 2 are on same plane, the bottom of inlet pipe 1 and outlet pipe 2 is connected a symmetric U type pipe connections 3, top one end of this U type pipe connections 3 with go out the mode of 2 pipe bottoms and link together by welding, the bottom of two inlet pipes connects a special three-way piece, this special three-way piece is a Y-type three way type spare, and the outlet of special three-way piece is fixedlyed connected with the top the other end of U type pipe connections.This U type pipe connections 3 is a three-dimensional arrangement part, is the plane of symmetry with inlet pipe 1 and plane, outlet pipe 2 place, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions.The import of described 2-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in the both sides of each root outlet pipe 2 is an inlet pipe 1, between per two outlet pipes 2 two inlet pipes 1 is arranged.
Generally, the internal diameter of the inlet pipe of 2-1 type radiating furnace tube of the present invention is 30～70mm, and preferred value is 40～60mm, and more preferably value is 45～55mm; The internal diameter of outlet pipe is 50～90mm, and preferred value is 60～80mm, and more preferably value is 65～75mm; Tube pitch between per two radiating furnace tubes is 1.0～3.0 with the ratio of boiler tube mean outside diameter, and preferred value is 1.5～2.5, and more preferably value is 1.8～2.2; Comprise bottom U type pipe connections equivalent length inlet pipe and go out. the length of mouthful pipe is generally 9～15m, and preferred value is 10～14m, and more preferably value is 11～13m
Pyrolyzer with 80,000 tons of annual output ethene is an example, its radiation chamber can be arranged 40 2-1 type radiating furnace tubes of the present invention, 2-1 type boiler tube adopts single, inlet pipe of the present invention and the staggered arrangement mode of outlet pipe, tube center distance between two inlet pipe pipes is 110～120mm, and the tube center distance between inlet pipe and outlet pipe is 130～150mm; The internal diameter of inlet pipe is 48～53mm, and length is 12.5～13.5m; The internal diameter of outlet pipe is 69～74mm, and length is 12.5～13.5m; The span width of radiation chamber is 3.0m, and the free length of radiation chamber is 14.8～16.8m, and the free height of radiation chamber is 13～14m.
Claims (8)
1, a kind of novel texture and the two procedure radiation furnace tube of arranging, it comprises the two journey boiler tubes of being made up of inlet pipe and outlet pipe, at inlet pipe and outlet pipe bottom web member is housed, form the radiating furnace tube that each 1-1 type is arranged by an inlet pipe and an outlet pipe, this 1-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, plane, radiating furnace tube place and convection zone place plane parallel, planar both sides, radiating furnace tube place are provided with radiant wall burner and base burning device; Each root outlet pipe links to each other with a line style quenching boiler, inlet pipe links to each other across pipe with the pyrolyzer charging, it is characterized in that: described inlet pipe and outlet pipe are on same plane, the web member of inlet pipe and outlet pipe bottom is a symmetric U type pipe connections, fixedlys connected with the outlet pipe bottom with the inlet pipe bottom respectively in the two ends, top of this U type pipe connections; This U type pipe connections is a three-dimensional arrangement part, is the plane of symmetry with inlet pipe and plane, outlet pipe place, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions; The import of described 1-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in each root outlet pipe both sides is an inlet pipe.
2, the novel texture according to claim 1 and the two procedure radiation furnace tube of arranging, it is characterized in that: the internal diameter of described 1-1 type radiating furnace tube inlet pipe is 30～60mm, and preferred value is 35～55mm, and more preferably value is 40～50mm; The internal diameter of outlet pipe is 40～80mm, and preferred value is 50～70mm, and more preferably value is 55～65mm; Tube pitch between per two radiating furnace tubes is 1.0～3.0 with the ratio of boiler tube mean outside diameter, and preferred value is 1.5～2.5, and more preferably value is 1.8～2.2; The inlet pipe of the equivalent length of U type pipe connections and the length of outlet pipe are 9～15m bottom comprising, preferred value is 10～14m, and more preferably value is 11～13m.
3, the novel texture according to claim 1 and the two procedure radiation furnace tube of arranging is characterized in that: per 1,3,5 or 7 1-1 type boiler tubes are one group, can arrange the such 1-1 type radiating furnace tubes of many groups in radiation chamber.
4, the novel texture according to claim 1 and the two procedure radiation furnace tube of arranging, it is characterized in that: planar both sides, radiating furnace tube place are provided with the base burning device, do not establish radiant wall burner.
5, a kind of novel texture and the two procedure radiation furnace tube of arranging, it comprises the two journey boiler tubes of being made up of inlet pipe, outlet pipe, at inlet pipe and outlet pipe bottom web member is housed, form the radiating furnace tube that each 2-1 type is arranged by two parallel inlet pipes and an outlet pipe, this 2-1 type radiating furnace tube is arranged vertically the central authorities at the pyrolyzer radiation chamber, plane, radiating furnace tube place and convection zone place plane parallel, planar both sides, radiating furnace tube place are provided with radiant wall burner and base burning device; Each root outlet pipe links to each other with a line style quenching boiler, inlet pipe links to each other across pipe with the pyrolyzer charging, it is characterized in that: described inlet pipe and outlet pipe are on same plane, the web member of inlet pipe and outlet pipe bottom is a symmetric U type pipe connections, top one end of this U type pipe connections is fixedlyed connected with the outlet pipe bottom, the bottom of two inlet pipes connects a special three-way piece, and the outlet of special three-way piece is fixedlyed connected with the top the other end of U type pipe connections; This U type pipe connections is a three-dimensional arrangement part, is the plane of symmetry with inlet pipe and plane, outlet pipe place, tilts to the both sides of this plane of symmetry constant amplitude respectively from two connecting portions; The import of described 2-1 type radiating furnace tube and outlet are staggered, and the adjacent boiler tube in the both sides of each root outlet pipe is an inlet pipe, between per two outlet pipes two inlet pipes is arranged.
6, the novel texture according to claim 5 and the two procedure radiation furnace tube of arranging, it is characterized in that: the internal diameter of described inlet pipe is 30～70mm, and preferred value is 40～60mm, and more preferably value is 45～55mm; The internal diameter of outlet pipe is 50～90mm, and preferred value is 60～80mm, and more preferably value is 65～75mm; Tube pitch between per two radiating furnace tubes is 1.0～3.0 with the ratio of boiler tube mean outside diameter, and preferred value is 1.5～2.5, and more preferably value is 1.8～2.2; The inlet pipe of the equivalent length of U type pipe connections and the length of outlet pipe are 9～15m bottom comprising, preferred value is 10～14m, and more preferably value is 11～13m.
7, the novel texture according to claim 5 and the two procedure radiation furnace tube of arranging is characterized in that: per 1,3 or 5 2-1 type boiler tubes are one group, can arrange the such 2-1 type radiating furnace tubes of many groups in radiation chamber.
8, the novel texture according to claim 5 and the two procedure radiation furnace tube of arranging, it is characterized in that: planar both sides, described radiating furnace tube place are provided with the base burning device, do not establish radiant wall burner.
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| CNB2005100890818A CN100487079C (en) | 2005-08-05 | 2005-08-05 | Two procedure radiation furnace tube of novel structure and arrangement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101723785A (en) * | 2008-10-16 | 2010-06-09 | 中国石油化工股份有限公司 | Cracking furnace with double-row arranged radiant section furnace tubes |
| CN101062883B (en) * | 2006-04-29 | 2011-05-04 | 中国石油化工股份有限公司 | Cracking furnace with radiation furnace tubes configured in U-shaped structure |
| CN101062884B (en) * | 2006-04-29 | 2011-06-15 | 中国石油化工股份有限公司 | Cracking furnace with two-stroke radiation furnace tube |
| CN101333147B (en) * | 2007-06-28 | 2011-06-15 | 惠生工程（中国）有限公司 | Ethylene pyrolysis furnace |
| CN101723784B (en) * | 2008-10-16 | 2012-12-26 | 中国石油化工股份有限公司 | Ethylene cracking furnace |
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| CN102175084B (en) * | 2011-02-22 | 2012-09-26 | 刘智泉 | Table-type tube side radiating chamber in heating furnace standpipe space |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE278751T1 (en) * | 1997-05-13 | 2004-10-15 | Stone & Webster Process Tech | CRACK OVEN WITH HEAT RADIANT TUBES |
| US6425757B1 (en) * | 2001-06-13 | 2002-07-30 | Abb Lummus Global Inc. | Pyrolysis heater with paired burner zoned firing system |
| CN2836913Y (en) * | 2005-08-05 | 2006-11-15 | 上海惠生化工工程有限公司 | Two-segment radiation furnace pipe with novel structure and arrangement for cracking furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101062883B (en) * | 2006-04-29 | 2011-05-04 | 中国石油化工股份有限公司 | Cracking furnace with radiation furnace tubes configured in U-shaped structure |
| CN101062884B (en) * | 2006-04-29 | 2011-06-15 | 中国石油化工股份有限公司 | Cracking furnace with two-stroke radiation furnace tube |
| CN101333147B (en) * | 2007-06-28 | 2011-06-15 | 惠生工程（中国）有限公司 | Ethylene pyrolysis furnace |
| CN101723785A (en) * | 2008-10-16 | 2010-06-09 | 中国石油化工股份有限公司 | Cracking furnace with double-row arranged radiant section furnace tubes |
| CN101723784B (en) * | 2008-10-16 | 2012-12-26 | 中国石油化工股份有限公司 | Ethylene cracking furnace |
| CN101723785B (en) * | 2008-10-16 | 2013-06-05 | 中国石油化工股份有限公司 | Cracking furnace with double-row arranged radiant section furnace tubes |
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