CN202688271U - Ethylene cracking furnace - Google Patents
Ethylene cracking furnace Download PDFInfo
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- CN202688271U CN202688271U CN 201220337062 CN201220337062U CN202688271U CN 202688271 U CN202688271 U CN 202688271U CN 201220337062 CN201220337062 CN 201220337062 CN 201220337062 U CN201220337062 U CN 201220337062U CN 202688271 U CN202688271 U CN 202688271U
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Abstract
The utility model discloses an ethylene cracking furnace. According to the ethylene cracking furnace, a radiating furnace pipe comprises two branched radiating furnace pipes; the first furnace pipes are distributed in two rows; reversed Y shaped pipes or palm shaped pipes are arranged at inlet ends of the second furnace pipes; and the first furnace pipes and the second furnace pipes are combined to form one pipe; and the first furnace pipes and the second furnace pipes are connected through bent pipe combined components which are formed by symmetric bent pipes or S-shaped bent pipes. According to the ethylene cracking furnace with the arrangement, pressure generated by thermal expansion difference among the first furnace pipes and between the first furnace pipes and the second furnace pipes can be effectively absorbed, so that the radiating furnace pipe can be prevented from being bent, and as a result, a technical index and an online rate of the cracking furnace can be increased, a mechanical property of the radiating furnace pipe can be improved, operating cost can be reduced, and service life of the furnace pipe can be prolonged; and moreover, more radiating furnace pipes can be arranged once hearths with certain quantity are arranged, and therefore, an occupied area of the cracking furnace and investment of the cracking furnace can be reduced.
Description
Technical field
The utility model relates to the chemical industry equipment field, furtherly, relates to a kind of ethane cracking furnace.
Background technology
The cracking of ethylene technology that adopts in the petrochemical complex ethylene unit is mainly U.S. LUMMUS company, Stone﹠amp; Webster company, Kellog﹠amp; Braun Root company, German Linde company, Technip (KTI) company and the domestic CBL pyrolyzer of developing in Europe.Their technology is as follows:
U.S. LUMMUS company: adopt the two journey boiler tubes such as 4-1,5-1,6-1, boiler tube adopts mistake to arrange and puts, and namely the first journey pipe is equivalent to single (be arranged in two rows but be independent of each other mutually), the second journey pipe is double, joins one-level chilling (used heat) boiler;
U.S. Stone﹠amp; Webster company: adopt U-shaped boiler tube, take single as main, when the transformation pyrolyzer expands energy, adopt double layout, usually distribution impatient cold (used heat) boiler, all bottom heat supplies;
U.S. Kellog﹠amp; Braun Root company: adopt U-shaped or one way boiler tube, usually distribution impatient cold (used heat) boiler, all bottom heat supplies;
Germany Linde company: adopt 2-1 two journey boiler tubes, common single layout is joined one-level chilling (used heat) boiler or linear chilling (used heat) boiler;
Technip (Dutch KTI) company: adopt 2-1 two journey boiler tubes, usually join one-level chilling (used heat) boiler, adopt 1-1(U) type boiler tube, double layout is joined a linear chilling (used heat) boiler usually;
The CBL cracking technique of domestic-developed adopts the two journey boiler tubes such as 2-1 type and improvement 2-1 type, can join one-level chilling (used heat) boiler for the 2-1 type, or be complementary with linear boiler, secondary quenching boiler.
For making raw material consumption greatly reduce, keep suitable running period and having preferably adaptability to raw material, the most prior art all adopts not branch's reducing highly selective boiler tube of two journey branch reducings or two journeys.The first Cheng Caiyong minor diameter boiler tube utilizes the large characteristics of its specific surface area to reach the purpose that is rapidly heated, and the larger-diameter boiler tube of the second Cheng Caiyong is to reduce the impact on coking susceptibility.The two journey highly selective radiant coils that adopt have the boiler tubes such as 1-1 type (U-shaped), 2-1 type, 4-1 type, 6-1 type.
Quenching boiler has traditional type (Si Mite, Bao Xige), bathtub formula one-level quenching boiler, secondary chilling and Linear shape cooling boiler, and Linear shape cooling boiler has advantages of the long hydraulic decoking that do not need running period.Can with linear chilling
1-1 type (U-shaped) boiler tube have specific surface area large, can mate, have with Linear shape cooling boiler preferably mechanical property, but running period is slightly poorer than other two journeys boiler tubes.
2-1 type boiler tube have specific surface area large, can mate with Linear shape cooling boiler, but compare because the first journey pipe need to be merged into a pipe by two pipes by a Y type spare with 1-1 type (U-shaped) boiler tube, two pipes deviation can occur in making and operating, boiler tube caliber after the merging is larger, and the flexibility of major diameter bend pipe is poorer than little bend pipe.EP1146105 discloses a kind of arrangement mode of 2-1 type boiler tube: two-range radiant section boiler tube is arranged vertically in the radiation section burner hearth, and the straight tube of a journey pipe and two journey pipes is arranged in the plane, and a journey pipe is arranged together, and two journey pipes are arranged together.One Cheng Zhiguan is after a Y-piece merges and are connected the journey pipe respectively by Guan Yuyi bend pipe connection of S shape.
Two journey boiler tubes of the configuration such as 4-l, 6-l, common four group's boiler tubes are joined a chilling (used heat) boiler; Boiler tube adopts wrong row to arrange, and namely the first journey pipe is single, the second journey pipe is double, and first, second journey boiler tube adopts rigidly connected collecting tubule.U.S. Rumscorrest Co. has announced its boiler tube and has arranged in patent CN1067669, it enters the first journey pipe is 6, and the second journey Guan Weiyi root, the first journey pipe are connected with the second journey pipe by a collecting tubule in the bottom.This kind structure, because the bottom collecting tubule is for being rigidly connected, differential expansion between the second journey pipe and the first journey pipe can only be regulated by the equilibrium system that is arranged on the first journey tube inlet, reaches the relatively more difficult elimination of differential expansion between the first journey and the second journey pipe between the first journey pipe, can cause the crooking of the tubes at last.
The boiler tubes such as 2-1 type, 4-1 type are take-off pipe, after need to merging, the first journey pipe is connected with the second journey pipe, can whether the stud connector design between the first journey pipe and the second journey pipe be reasonable, directly the mechanical property of cracking furnace pipe exerted an influence, that is to say the bending that slow down or avoid boiler tube.
The utility model content
Thereby realize expanding energy for solving the problem and the realization more boiler tubes of layout in existing burner hearth that occur in the prior art, the utility model provides a kind of ethane cracking furnace.Can realize expanding under the prerequisite of energy, also can improve mechanical property double at inlet tube, the radiating furnace tube when outlet pipe is single, realize improving the ability of pyrolyzer, and avoided the crooking of the tubes, and do not affect pyrolyzer technical indicator, online rate, realize to reduce process cost and prolong boiler tube work-ing life, reduce cost, the final realization increased economic efficiency.
The purpose of this utility model provides a kind of ethane cracking furnace.
Comprise:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups two-stroke radiation furnace tube of vertical arrangement in the radiation zone;
B) convective region; Horizontal arrangement is at many groups convection coil of convective region;
C) the flue district between radiation zone and the convective region;
D) quenching boiler, high pressure drum and induced draft fan;
Described radiating furnace tube is the radiating furnace tube of two journey branches;
The first journey boiler tube adopts inverted Y-shaped pipe or palm type pipe to merge into a pipe in the second journey boiler tube lower end;
The first journey pipe is arranged to two rows, and the second journey pipe is arranged in a row.
Be connected with the bend pipe subassembly that S type bend pipe forms by symmetrical bend pipe or symmetrical bend pipe between described the first journey boiler tube and the second journey boiler tube;
Described symmetrical bend pipe is that a structure is bend pipe symmetrical in same plane or on the space;
Described inverted Y-shaped pipe has two entrances and an outlet;
Described palm type pipe pipe has plural entrance and an outlet.
The first journey boiler tube be connected the journey boiler tube and can adopt following several mode to connect:
Described the first journey boiler tube exit end is connected with the symmetrical bend pipe inlet end of described bend pipe subassembly, the inlet end of described inverted Y-shaped pipe or palm type pipe is connected with the S type bend pipe of described bend pipe subassembly, and the exit end of inverted Y-shaped pipe or palm type pipe connects the inlet end of the second journey boiler tube.
Described the first journey boiler tube exit end is connected with the S type bend pipe of described bend pipe subassembly, the symmetrical bend pipe inlet end of described bend pipe subassembly is connected with S type bend pipe, symmetrical winding pipe exit end is connected with the inlet end of described inverted Y-shaped pipe or palm type pipe, and the exit end of inverted Y-shaped pipe or palm type pipe is connected with the inlet end of the second journey boiler tube.
Described the first journey boiler tube exit end is connected with symmetrical bend pipe inlet end, and symmetrical winding pipe exit end is connected with the inlet end of described inverted Y-shaped pipe or palm type pipe, and the exit end of inverted Y-shaped pipe or palm type pipe is connected with the inlet end of the second journey boiler tube.
Described inverted Y-shaped pipe has two entrances and an outlet, and described palm type pipe has plural entrance and an outlet.Mentioned bend pipe subassembly comprises direct-connected situation with the first journey boiler tube or inverted Y-shaped pipe or palm type pipe " linking to each other " and forms situation about being connected by a transition conduit in the present invention, this can be selected by needs as the case may be, and transition conduit can be bend pipe or straight tube.
Described radiating furnace tube the first journey boiler tube is arranged in take the second journey boiler tube place vertical plane in symmetrical two parallel or mirror symmetrical planes, spacing is for according to being arranged between the 200-700mm of actual boiler tube between two planes of the first journey pipe, and final pipe row spacing is determined according to boiler tube caliber, boiler tube quantity etc.; Be arranged in the first journey boiler tube of a small group boiler tube in two planes of a side of the second journey pipe, during two journey pipe centralized arrangement of a large group boiler tube, a journey pipe can be divided into the both sides that two equal parts are arranged in the second journey pipe.
The first journey pipe boiler tube of each boiler tube preferably is provided with boiler tube such as N=2 ~ 8 inlet tube of even number, more preferred N=2 or 4 root entry pipes; When N=4, per two upper distance of swimming boiler tubes can merge by a Y tube first, be connected with the bend pipe subassembly again, right latter two bend pipe subassembly links to each other with two inlet ends of inverted Y-shaped pipe again, and then link to each other with the second journey tube inlet section, can not merge by Y-piece yet, but link to each other with four inlet ends of palm type pipe by four bend pipe subassemblies, and then link to each other with the second journey tube inlet section;
Described symmetrical bend pipe is the bend pipe of the symmetry in a plane or space, and its concrete shape can be semi-circular tube, semiellipse pipe or other symmetrical arc or curve, and its diameter or length are according to specifically boiler tube configuration or arrangement are determined or adjusted;
Described bend pipe web member divides the both sides that are in described the first journey boiler tube and the second journey boiler tube plane of living in, the downward projection of the symmetrical bend pipe in the same side is parallel, the downward projection of the same side S type bend pipe is parallel, its side-looking projection is preferably take the second journey boiler tube plane as symmetrical, its side-looking projection of side also can be asymmetric as required, the angle that the angle that symmetrical bend pipe becomes with the boiler tube plane and S type bend pipe become with the boiler tube plane is not one and determines number, reaches according to the boiler tube configuration and specifically arranges to determine;
One journey pipe of described each boiler tube of connection is identical with the preferred pipe range of each bend pipe subassembly between the two journey pipes, is equal in weight;
The caliber of radiating furnace tube is determined according to processing requirement.
Described radiant coil can arrange enhanced heat transfer member, such as the disclosed twisted tube of CN1260469, in order to increase absorbing radiation heat.
A pyrolyzer can be arranged the radiating furnace tube that one or more groups is identical, and the boiler tube of some amount can be set in every group as required, and such as 4 or 8 (group) boiler tubes etc., every stroke radiation furnace tube caliber is can the segmentation reducing or continuous reducing.
In implementation, can adopt following scheme:
The first journey boiler tube centralized arrangement of (group) radiating furnace tube is in a side of the second journey boiler tube, and the first journey pipe quantity is preferably 2 and 4.Described radiating furnace tube the first journey boiler tube has even number root reducing or the boiler tube of reducing not.The S type bend pipe of each radiating furnace tube both sides is arranged in its both sides with the second journey boiler tube place plane symmetry in side-view, the bottom of close the first journey boiler tube also can be arranged in the both sides that can be arranged in plane, boiler tube place near the second journey boiler tube.Because the first journey boiler tube finally merges in the second journey boiler tube bottom, and adopt the bend pipe subassembly to absorb between the first journey boiler tube and with the second journey pipe between differential expansion, overcome effectively therefore that branch's boiler tubes such as 2-1,4-1 type exist owing to expansion between the first journey pipe do not wait and two journey boiler tubes between the mechanical property that causes of differential expansion on shortcoming.Simultaneously because two bend pipe subassembly weight of connection one, two journey pipes are identical, S type bend pipe is arranged symmetrically with, therefore two journey pipes are stressed is balance, in addition, because the caliber of bend pipe subassembly is a journey pipe caliber (2-1,4-1) or little when (4-1) adopts the second journey caliber than prior art between first, second journey pipe, the flexibility that is conducive to improve bend pipe is avoided the bending of boiler tube.
In order to overcome the shortcoming of branch's diameter varied boiler tubes such as existing 2-1 and 4-1, and keep existing advantage, the present invention prolongs the length of 2 pipes of the first journey of 2-1 type boiler tube, merge in the second journey pipe bottom, also namely overcome the deficiency on the mechanical property of existing 2-1 type boiler tube, processing performance has kept the advantage of 2-1.Simultaneously, the present invention merges 2 pipes of the first journey of 4-1 type boiler tube first in the bottom, then merges in the second journey pipe bottom, has also namely overcome the deficiency on the mechanical property of existing 4-1 type boiler tube.
In addition, put because the first journey boiler tube employing two is arranged, so that in same burner hearth, can arrange more groups of boiler tubes, be fit to very much the expansion of existing pyrolyzer can or be prolonged the cycle of operation etc.
Particularly, compared with prior art, the beneficial effects of the utility model are: (1) finally merges in the second journey boiler tube bottom owing to the first journey boiler tube, and employing pipe range identical (close), the bend pipe subassembly of (close) of being equal in weight absorb and two journey pipes between differential expansion, therefore both effectively overcome 2-1, that the branch such as 4-1 type boiler tube exists owing to not waiting shortcoming on the mechanical property that causes because of thermal expansion between the first journey boiler tube, be conducive to absorb the thermal expansion difference between a journey pipe and two journey pipes, avoid boiler tube to bend, finally prolonged radiating furnace tube work-ing life; (2) because the caliber of the first journey boiler tube is little, and its specific surface area is large, when the first journey stove length of tube lengthens, therefore whole boiler tube specific surface area increases, this is conducive to prolong the pyrolyzer cycle of operation when cracking severity is identical, and when identical in the cycle of operation, is conducive to improve olefin yields.(3) because the first journey boiler tube adopts two to arrange and put, so that in same burner hearth, can arrange the more group of manying boiler tube during than single layouts of boiler tube, can reduce investment outlay and take up an area, and be convenient to existing pyrolyzer is implemented the expansion energy.
Description of drawings
Fig. 1 is prior art pyrolyzer schematic diagram
Fig. 2-1 is prior art 2-1 type boiler tube front view
Fig. 2-2 is prior art 2-1 type boiler tube vertical view
Fig. 3-1 is 2-1 type boiler tube front view of the present utility model
Fig. 3-2 is 2-1 type boiler tube side-view of the present utility model
Fig. 3-3 is 2-1 type boiler tube vertical view of the present utility model
Fig. 4-1 is 2-1 type boiler tube front view of the present utility model
Fig. 4-2 is 2-1 type boiler tube side-view of the present utility model
Fig. 4-3 is 2-1 type boiler tube vertical view of the present utility model
Fig. 5-1 is 2-1 type boiler tube front view of the present utility model
Fig. 5-2 is 2-1 type boiler tube side-view of the present utility model
Fig. 5-3 is 2-1 type boiler tube vertical view of the present utility model
Description of reference numerals:
1. being radiation section, 2. is transition section, 3. is convection zone, 4. is radiating furnace tube, 5. is the base burning device, 6. is radiant wall burner, 7. is quenching boiler, and 8. 9. the high pressure drum is induced draft fan.
1-the first journey boiler tube; 2-the second journey boiler tube; 3-Y type pipe; 4-S type bend pipe; The symmetrical bend pipe of 5-
Embodiment
Below in conjunction with embodiment, further specify the utility model.
As shown in Figure 3, a kind of ethane cracking furnace that adopts branch's reducing boiler tube comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups two-stroke radiation furnace tube of vertical arrangement in the radiation zone;
B) convective region; Horizontal arrangement is at many groups convection coil of convective region;
C) the flue district between radiation zone and the convective region;
D) quenching boiler, high pressure drum and induced draft fan;
Wherein radiating furnace tube is two journey 2-1 type branch reducing boiler tubes, the first journey boiler tube is arranged in two planes and equidistant with the second journey boiler tube plane, wherein spacing is 300mm between two planes of the first journey pipe, the second journey boiler tube centralized arrangement, and the first journey boiler tube is arranged in the both sides of the second journey boiler tube, but two journey pipes with a small group 2-1 are arranged in two parallel planess of the same side, the second journey boiler tube quantity is 10, the first journey boiler tube total quantity is 20, respectively arranges 10 the first journey boiler tubes in the second journey boiler tube both sides;
The first journey boiler tube of each 2-1 type boiler tube adopts inverted Y-shaped pipe to merge into a pipe in the second journey boiler tube lower end; Described symmetrical bend pipe is that a structure is symmetrical bend pipe in same plane;
Be connected with the bend pipe subassembly that S type bend pipe forms by symmetrical bend pipe between the first journey boiler tube and the second journey boiler tube; Described the first journey boiler tube is connected with the S type bend pipe of described bend pipe subassembly first, then symmetrical bend pipe is connected with the inlet end of described inverted Y-shaped pipe, the other end of inverted Y-shaped pipe (exit end) connects the inlet end of the second journey boiler tube, and symmetrical bend pipe and S type bend pipe are arranged in the both sides on radiating furnace tube plane.
The pipe range of two bend pipe combined connection components between first, second journey boiler tube of each radiating furnace tube is identical, and symmetrical bend pipe becomes different angles from the boiler tube plane.Two of each first journey pipes pipe bottom respectively have a S type bend pipe to boiler tube plane excurvation go out and its side-view with the second journey boiler tube plane symmetry.
Embodiment 2:
As shown in Figure 4, a kind of ethane cracking furnace that adopts branch's reducing boiler tube comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups two-stroke radiation furnace tube of vertical arrangement in the radiation zone;
B) convective region; Horizontal arrangement is at many groups convection coil of convective region;
C) the flue district between radiation zone and the convective region;
D) quenching boiler, high pressure drum and induced draft fan;
Wherein radiating furnace tube adopts two journey 2-1 type branch reducing boiler tubes, the first journey boiler tube is arranged in two planes and equidistant with the second journey boiler tube plane, wherein spacing is 300mm between two planes of the first journey pipe, the second journey boiler tube centralized arrangement, and the first journey boiler tube is arranged in the both sides of the second journey boiler tube, but 2 journey pipes with a small group 2-1 are arranged in two parallel planess of the same side, the second journey boiler tube quantity is 10, the first journey boiler tube total quantity is 20, respectively arranges 10 in the second journey boiler tube both sides.
The first journey boiler tube of each 2-1 type boiler tube adopts inverted Y-shaped pipe to merge into a pipe in the second journey boiler tube lower end; Described symmetrical bend pipe is that a structure is symmetrical bend pipe in same plane;
Be connected with the bend pipe subassembly that S type bend pipe forms by symmetrical bend pipe between the first journey boiler tube and the second journey boiler tube; Described the first journey boiler tube is connected with the symmetrical bend pipe of described bend pipe subassembly first, then S type bend pipe is connected with the inlet end of described inverted Y-shaped pipe, the other end of inverted Y-shaped pipe (exit end) connects the inlet end of the second journey boiler tube, and symmetrical bend pipe and S type bend pipe are arranged in the both sides on radiating furnace tube plane.
The pipe range of two bend pipe combined connection components between first, second journey boiler tube of each radiating furnace tube is identical, and symmetrical bend pipe becomes different angles from the boiler tube Plane intersects.Each second journey pipe both sides respectively has a S type bend pipe to go out and with the boiler tube plane symmetry to boiler tube plane excurvation.
Embodiment 3:
As shown in Figure 5, a kind of ethane cracking furnace that adopts branch's reducing boiler tube comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups two-stroke radiation furnace tube of vertical arrangement in the radiation zone;
B) convective region; Horizontal arrangement is at many groups convection coil of convective region;
C) the flue district between radiation zone and the convective region;
D) quenching boiler, high pressure drum and induced draft fan;
Wherein radiating furnace tube adopts two journey 2-1 type branch reducing boiler tubes, the first journey boiler tube is arranged in two planes and equidistant with the second journey boiler tube plane, wherein spacing is 600mm between two planes of the first journey pipe, the second journey boiler tube centralized arrangement, and the first journey boiler tube is arranged in the both sides of the second journey boiler tube, but is arranged in two parallel planess of the same side with 2 journey pipes of a small group 2-1, and the second journey boiler tube quantity is 6, the first journey boiler tube total quantity is 12, respectively arranges 6 in the second journey boiler tube both sides.
The first journey boiler tube of each 2-1 type boiler tube adopts inverted Y-shaped pipe to merge into a pipe in the second journey boiler tube lower end; Described symmetrical bend pipe is that a structure is symmetrical bend pipe in same plane;
Be connected by symmetrical bend pipe between the first journey boiler tube and the second journey boiler tube; Described the first journey boiler tube is connected with described symmetrical bend pipe first, then is connected with the inlet end of described inverted Y-shaped pipe, and the other end of inverted Y-shaped pipe (exit end) connects the inlet end of the second journey boiler tube, and symmetrical bend pipe is arranged in the both sides on radiating furnace tube plane.
The pipe range of two bend pipe combined connection components between first, second journey boiler tube of each radiating furnace tube is close, and symmetrical bend pipe becomes different angles from the boiler tube Plane intersects.Each second journey pipe both sides respectively has a symmetrical bend pipe to go out and with the boiler tube plane symmetry to boiler tube plane excurvation.
Claims (10)
1. ethane cracking furnace comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups two-stroke radiation furnace tube of vertical arrangement in the radiation zone;
B) convective region; Horizontal arrangement is at many groups convection coil of convective region;
C) the flue district between radiation zone and the convective region;
D) quenching boiler, high pressure drum and induced draft fan;
It is characterized in that:
Described radiating furnace tube is the radiating furnace tube of two journey branches;
The first journey boiler tube adopts inverted Y-shaped pipe or palm type pipe to merge into a pipe in the second journey boiler tube lower end;
The first journey pipe is arranged to two rows, and the second journey pipe is arranged in a row;
Be connected with the bend pipe subassembly that S type bend pipe forms by symmetrical bend pipe or symmetrical bend pipe between described the first journey boiler tube and the second journey boiler tube;
Described symmetrical bend pipe is that a structure is bend pipe symmetrical in same plane or on the space;
Described inverted Y-shaped pipe has two entrances and an outlet;
Described palm type pipe has plural entrance and an outlet.
2. ethane cracking furnace as claimed in claim 1 is characterized in that:
Described the first journey boiler tube exit end is connected with the symmetrical bend pipe of described bend pipe subassembly, and the inlet end of described inverted Y-shaped pipe or palm type pipe is connected with the S type bend pipe of described bend pipe subassembly, and the exit end of inverted Y-shaped pipe or palm type pipe connects the inlet end of the second journey boiler tube.
3. ethane cracking furnace as claimed in claim 1 is characterized in that:
Described the first journey boiler tube exit end is connected with the S type bend pipe of described bend pipe subassembly, the symmetrical bend pipe inlet end of described bend pipe subassembly is connected with S type bend pipe, symmetrical winding pipe exit end is connected with the inlet end of described inverted Y-shaped pipe or palm type pipe, and the exit end of inverted Y-shaped pipe or palm type pipe is connected with the inlet end of the second journey boiler tube.
4. ethane cracking furnace as claimed in claim 1 is characterized in that:
Described the first journey boiler tube exit end is connected with symmetrical bend pipe inlet end, and symmetrical winding pipe exit end is connected with the inlet end of described inverted Y-shaped pipe or palm type pipe, and the exit end of inverted Y-shaped pipe or palm type pipe is connected with the inlet end of the second journey boiler tube.
5. ethane cracking furnace as claimed in claim 1 is characterized in that:
Described bend pipe subassembly divides the both sides that are in described the second journey boiler tube plane of living in.
6. ethane cracking furnace as claimed in claim 5 is characterized in that:
The downward projection of described bend pipe subassembly is as symmetrical take the second journey boiler tube plane.
7. ethane cracking furnace as claimed in claim 1 is characterized in that:
Each the bend pipe subassembly pipe range that connects same the second journey boiler tube is identical, is equal in weight.
8. such as the described ethane cracking furnace of one of claim 1 ~ 7, it is characterized in that:
The quantity of described the first journey boiler tube is the natural number between 2 ~ 8.
9. ethane cracking furnace as claimed in claim 8 is characterized in that:
The quantity of described the first journey boiler tube is 2 or 4.
10. such as the described ethane cracking furnace of one of claim 1-7, it is characterized in that:
Described pyrolyzer arranges one or more groups radiating furnace tube, and the caliber of every stroke radiation furnace tube is segmentation reducing or continuous reducing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337062 CN202688271U (en) | 2012-07-11 | 2012-07-11 | Ethylene cracking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337062 CN202688271U (en) | 2012-07-11 | 2012-07-11 | Ethylene cracking furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688271U true CN202688271U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337062 Expired - Lifetime CN202688271U (en) | 2012-07-11 | 2012-07-11 | Ethylene cracking furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104560114A (en) * | 2013-10-29 | 2015-04-29 | 中国石油化工股份有限公司 | Ethylene cracking furnace of double-section heat supply structure |
| CN109423321A (en) * | 2017-09-05 | 2019-03-05 | 中国石化工程建设有限公司 | A kind of ethane cracking furnace |
| CN109486507A (en) * | 2017-09-13 | 2019-03-19 | 中国石油化工股份有限公司 | A kind of ethane cracking furnace |
-
2012
- 2012-07-11 CN CN 201220337062 patent/CN202688271U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104560114A (en) * | 2013-10-29 | 2015-04-29 | 中国石油化工股份有限公司 | Ethylene cracking furnace of double-section heat supply structure |
| CN104560114B (en) * | 2013-10-29 | 2016-06-22 | 中国石油化工股份有限公司 | A kind of pair of section supplies the ethane cracking furnace of heat structure |
| CN109423321A (en) * | 2017-09-05 | 2019-03-05 | 中国石化工程建设有限公司 | A kind of ethane cracking furnace |
| CN109486507A (en) * | 2017-09-13 | 2019-03-19 | 中国石油化工股份有限公司 | A kind of ethane cracking furnace |
| CN109486507B (en) * | 2017-09-13 | 2021-02-02 | 中国石油化工股份有限公司 | Ethylene cracking furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |