CN209555154U - A kind of ethane cracking furnace using branch's multi-way boiler tube - Google Patents
A kind of ethane cracking furnace using branch's multi-way boiler tube Download PDFInfo
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Abstract
The utility model provides a kind of ethane cracking furnace using branch's multi-way boiler tube, and multi-way radiating furnace tube (1-4) is four to ten journey branch radiating furnace tubes；First journey boiler tube of multi-way radiating furnace tube (1-4) merges into a root canal using inverted Y-shaped pipe or palm shape pipe in quadruple pass boiler tube lower end using the third journey boiler tube that inverted Y-shaped pipe or palm shape pipe merge into a root canal and/or multi-way radiating furnace tube (1-4) in the second journey boiler tube lower end.The utility model the utility model has the boiler tube of connection and reasonable arrangement；The bottom linker of each journey boiler tube uses elbow joint in every group of boiler tube, effectively absorbs the stress as caused by thermal expansion difference between boiler tube, avoids the crooking of the tubes；And can improve with the connection type of quenching boiler, effectively reduce furnace volume and boiler tube weight, the length of the steam header of Linear shape cooling boiler for reducing the length of connecting tube and matching reduces cost.
Description
Technical field
The utility model relates to field of chemical equipment, further say, are to be related to a kind of second using branch's multi-way boiler tube
Alkene pyrolysis furnace.
Background technique
Currently, cracking of ethylene technology employed in petrochemical industry ethylene unit be mainly LUMMUS company, the U.S.,
Stone&Webster company, Kellog&Braun Root company, European German Linde company, Technip (KTI) company
And the CBL pyrolysis furnace that Sinopec is developed.For multitube distance pyrolysis furnace, their technology is as follows:
LUMMUS company, the U.S.: SRT-3 type uses 1-1-1- using 4-2-1-1 or 4-2-1-1-1-1 boiler tube, SRT-1 type
The isometrical boiler tube of 1-1-1 or 1-1-1-1-1-1-1-1, SRT-4 type use 8-4-1-1 boiler tube, and usual two groups of boiler tubes match a chilling
(waste heat) boiler；
Stone&Webster company, the U.S.: using W (1-1-1-1 quadruple pass variable diameter) type or M, (six journey of 1-1-1-1-1-1 becomes
Diameter) type boiler tube, usual a small group or two group's boiler tubes match linear chilling (waste heat) boiler, whole bottom heat supplies；
Kellog&Braun Root company, the U.S.: it uses SC-4 type (1-1-1-1 quadruple pass variable diameter), usual a small group or two
Group's boiler tube matches linear chilling (waste heat) boiler, whole bottom heat supplies；
German Linde company: six journey boiler tube of 2-2-2-2-1-1 or 2-2-1-1 quadruple pass boiler tube, usual four group boiler tube are used
With chilling (waste heat) boiler；
Technip (Dutch KTI) company: GK-3 type 2-2-1-1, GK-4 type 4-4-2-1 and SMK type 1-1-1-1 tetra- is used
Journey boiler tube, usual 2~4 group boiler tube match chilling (waste heat) boiler, using SMK type boiler tube, usual a small group or two groups
Boiler tube matches linear chilling (waste heat) boiler.
The CBL cracking technique of domestic-developed can match level-one chilling (waste heat) boiler using 2-1-1-1 type quadruple pass boiler tube,
Or match with linear boiler, secondary quenching boiler.
The boiler tube arrangement mode that each company uses is to flow to boiler tube number of passes sequence by fluid to arrange, each journey boiler tube lower part
It is connected using ordinary construction elbow.Multi-way boiler tube each group individually arranges, boiler tube upper attachment boiler tube institute planar.
To make a kind of pair of preferable radiating furnace tube of cracked gas raw material also adapt to liquid charging stock, realizes and maintain operating appropriate
Period and there is preferable adaptability to raw material, current most of companies are all made of 4~6 journeys (~60m) branch variable diameter or not branch
The selectivity boiler tube such as variable diameter, will control in 0.4~1.0s the residence time.First journey or preceding two-way use minor diameter boiler tube, utilize
The characteristics of its large specific surface area, achievees the purpose that be rapidly heated, and the second Cheng Yihou uses larger-diameter boiler tube to reduce to coking
The influence of sensibility.Used quadruple pass intermediate selectivity radiant coil has 4-2-1-1 type, 2-2-1-1 type, 1-1-1-1,2-
The boiler tubes such as 1-1-1 type.
Quenching boiler has traditional type (Schmitt, Bao Xige), bathtub formula level-one quenching boiler, second level chilling and linear chilling
Boiler, Linear shape cooling boiler have the advantages that operation cycle, length was not required to hydraulic decoking.It can be with the matched radiation of Linear shape cooling boiler
Section boiler tube has 1-1-1-1 type, 2-1-1-1 type and 2-2-1-1 type etc..
1-1-1-1 type boiler tube can match with Linear shape cooling boiler, can also crack liquid charging stock with cracked gas raw material.
Pyrocrack2-2 (2-2-1-1) boiler tube of Linde company can also crack liquid original with cracked gas raw material
Material, but want poor compared to its mechanical performance of 1-1-1-1 type.
To sum up, each tube side of the prior art is arranged in sequence, every group of boiler tube is individually arranged in each pyrolysis furnace, multitube distance
It is connected between each tube side of boiler tube using common elbow structure, two kinds of independent or adjacent coil outlet pipes of the outlet of every group of boiler tube
It is arranged together connection quenching boiler, the requirement to radiant box length in this way is big, will lead to cloth when using traditional quenching boiler
Difficulty is set, using then needing biggish steam header when Linear shape cooling boiler.
Utility model content
Utility model aims to solve above-mentioned problems existing in the prior art, provide a kind of using branch's multi-way
The ethane cracking furnace of boiler tube, the boiler tube with connection and reasonable arrangement, and can improve with the connection type of quenching boiler, effectively reduce furnace
Thorax volume and boiler tube weight, and then reduce the construction investment of pyrolysis furnace.
The utility model provides the ethane cracking furnace using branch's multi-way boiler tube to achieve the goals above, comprising:
At least one radiant section, the bottom of the radiant section are placed with combustion bottom burner and are placed with side in the side of radiant section
Wall burner, vertical row is furnished at least one set of or multiple groups multi-way radiating furnace tube in radiant section)；
Convection section, horizontal arrangement has multiple groups convection coil in the convection section, and the radiant section and the convection section pass through
Flue is connected；
Quenching boiler, HP steam drum and air-introduced machine；
It is characterized by:
The multi-way radiating furnace tube is four to ten journey branch radiating furnace tubes；
First journey boiler tube of the multi-way radiating furnace tube is merged into the second journey boiler tube lower end using inverted Y-shaped pipe or palm shape pipe
The third journey boiler tube of one root canal and/or the multi-way radiating furnace tube uses inverted Y-shaped pipe or palm shape pipe in quadruple pass boiler tube lower end
Merge into a root canal；
Each journey boiler tube of the multi-way radiating furnace tube is single arrangement or double arrangement, the boiler tube of the same boiler tube set of arranging
Center line is respectively positioned in approximately the same plane, which is center line plane；
Each journey boiler tube of the multi-way radiating furnace tube distinguishes centralized arrangement, the first journey boiler tube of each group multi-way radiating furnace tube
Inlet tube is adjacent, and the outlet of last journey boiler tube of each group multi-way radiating furnace tube is adjacent, and intermediate each journey boiler tube is adjacent respectively.
Preferably, the bottom of the boiler tube of the adjacent tube side of the multi-way radiating furnace tube is connected with each other by bottom linker,
Top is connected with each other by top link, when the single arrangement of each journey boiler tube of the multi-way radiating furnace tube, the furnace of adjacent tube side
The bottom linker of pipe is in the heteropleural of the center line plane, and the top link of the boiler tube of adjacent tube side is in the center line
The heteropleural of plane, when the double arrangement of the boiler tube of the part tube side of the multi-way radiating furnace tube, the adjacent tube side set of arranging together
The bottom linker of boiler tube is ipsilateral the center line plane, and the top link of the boiler tube for the adjacent tube side set of arranging together exists
The center line plane it is ipsilateral.
Preferably, the bottom linker is elbow joint, and the elbow joint is set to the center line plane
Two sides, intersect at the center line plane, the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.
Preferably, including symmetrical bend pipe and it is set to the S type bend pipe of the symmetrical bend pipe at least one end；
The S type bend pipe is the stereochemical structure part of one one-tenth S type；
The symmetrical bend pipe is in a plane along the symmetrical bend pipe in center.
Preferably, the outlet end of the first journey boiler tube is connect with the symmetrical bend pipe of the elbow joint or S type bend pipe,
The arrival end of the inverted Y-shaped pipe or palm shape pipe is connect with the S type bend pipe of the elbow joint, the inverted Y-shaped pipe or palm shape pipe
Outlet end connect the arrival end of adjacent tube side boiler tube；
The inverted Y-shaped pipe has two entrances and one outlet；
The palm shape pipe pipe has more than two entrances and one outlet.
Preferably, the diameter of each journey boiler tube of the multi-way radiating furnace tube from the inlet to the outlet, by tube side sequence caliber by
Gradually amplify or use identical caliber.
Preferably, residence time of the processing medium in the multi-way radiating furnace tube is 0.3~1.0 second.
Preferably, each journey boiler tube of the multi-way radiating furnace tube is alternatively arranged or high temperature using low temperature tube side and high temperature tube side
The form of part interlaced arrangement between tube side and low temperature tube side.
Preferably, the quenching boiler be double-jacket tube formula quenching boiler, traditional type quenching boiler, bathtub formula quenching boiler or
Quick quenching boiler.
Preferably, the double-jacket tube formula quenching boiler is such as Linear shape cooling boiler, U-shaped quenching boiler or second level chilling pot
Furnace.
Compared with prior art, the utility model has the beneficial effects that
(1) bottom linker of each journey boiler tube uses elbow joint in every group of boiler tube of the boiler tube of the utility model, effectively
The stress as caused by thermal expansion difference between boiler tube is absorbed, the crooking of the tubes is avoided；Top connection uses top sub-assembly,
(2) the boiler tube part double arrangement of boiler tube of the utility model can reduce furnace volume and reduce investment outlay, or can be
More boiler tubes can be arranged in limited furnace cavity to improve the yield of pyrolysis furnace；
(3) in the utility model, by the setting of Y-piece or palm shape pipe, the flexibility of boiler tube arrangement is increased, boiler tube can
With single or double arrangement；The lower part for being set to 2 journeys or 4 journey pipes of Y-piece or palm shape pipe, caliber is smaller, is conducive to improve curved
The flexibility of pipe avoids the bending of boiler tube；The caliber of 1 journey or 3 journeys is combined less than 2 journeys or 4 journey pipes, large specific surface area, therefore bend pipe
Part is set to 2 journeys or 4 journey pipe lower ends, increases tubule electrical path length, increases the specific surface area of entire boiler tube, be conducive to extend and split
Solve the furnace cycle of operation.
Detailed description of the invention
Fig. 1 shows the signal of the ethane cracking furnace using branch's multi-way boiler tube of embodiment 1 according to the present utility model
Property structure chart.
Fig. 2-1,2-2,2-3 be respectively the front view of the multi-way radiating furnace tube of the embodiments of the present invention 2, side view and
Top view.
Fig. 3-1,3-2,3-3 be respectively the front view of the multi-way radiating furnace tube of the embodiments of the present invention 3, side view and
Top view.
Fig. 4-1,4-2,4-3 be respectively the front view of the multi-way radiating furnace tube of the embodiments of the present invention 4, side view and
Top view.
Fig. 5-1,5-2,5-3,5-4 are respectively the front view of the multi-way radiating furnace tube of the embodiments of the present invention 5, two groups
Side view and top view.
Fig. 6-1,6-2,6-3,6-4,6-5 be respectively the multi-way radiating furnace tube of the embodiments of the present invention 6 front view,
Three groups of side views and top view.
Fig. 7-1 and Fig. 7-2 is boiler tube arragement construction schematic diagram in the prior art.
Description of symbols
1-1, radiant section；1-2, flue；1-3, convection section；1-4, multi-way radiating furnace tube；1-5, combustion bottom burner；1-6, side
Wall burner；1-7, quenching boiler；1-8, HP steam drum；1-9, air-introduced machine；
1, the first journey boiler tube；2, the second journey boiler tube；3, third journey boiler tube；4, quadruple pass boiler tube；5, the 5th journey boiler tube；6,
Six journey boiler tubes.
Specific embodiment
Preferred embodiments of the present invention are described in more detail below.Although the following describe the utility model
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the utility model without the implementation that should be illustrated here
Mode is limited.On the contrary, thesing embodiments are provided so that the utility model is more thorough and complete, and can be by this
The range of utility model is completely communicated to those skilled in the art.
The utility model provides a kind of ethane cracking furnace using branch's multi-way boiler tube, comprising:
At least one radiant section 1-1, the bottom of radiant section are placed with combustion bottom burner 1-5, in the side of radiant section 1-1
It is placed with radiant wall burner 1-6, vertical row is furnished at least one set of or multiple groups multi-way radiating furnace tube 1-4 in radiant section 1-1；
Convection section 1-3；, horizontal arrangement has multiple groups convection coil in convection section 1-3, and radiant section 1-1 and convection section 1-3 are logical
Flue 1-2 is crossed to be connected；
Quenching boiler 1-7, HP steam drum 1-8 and air-introduced machine 1-9；
It is characterized by:
Multi-way radiating furnace tube 1-4 is four to ten journey branch radiating furnace tubes；
The first journey boiler tube of multi-way radiating furnace tube 1-4 is merged into the second journey boiler tube lower end using inverted Y-shaped pipe or palm shape pipe
The third journey boiler tube of one root canal and/or multi-way radiating furnace tube 1-4 are closed in quadruple pass boiler tube lower end using inverted Y-shaped pipe or palm shape pipe
It and is a root canal；
Each journey boiler tube of multi-way radiating furnace tube 1-4 is single arrangement or double arrangement, the boiler tube of the same boiler tube set of arranging
Center line is respectively positioned in approximately the same plane, which is center line plane；
Each journey boiler tube of multi-way radiating furnace tube 1-4 distinguishes centralized arrangement, the first journey boiler tube of each group multi-way radiating furnace tube 1-4
1 inlet tube is adjacent, and the outlet of last journey boiler tube of each group multi-way radiating furnace tube 1-4 is adjacent, and intermediate each journey boiler tube is divided equally
It is not adjacent.
Specifically, the boiler tube part double arrangement of boiler tube of the utility model can reduce furnace volume and reduce investment outlay, or can
The yield of pyrolysis furnace is improved can arrange more boiler tubes in limited furnace cavity；Pass through Y type pipe or palm shape pipe
Setting, reduces the length of the steam header of the Linear shape cooling boiler matched, can be used for using traditional cauldron
The boiler tube of pyrolysis furnace is transformed, and reduces cost.
Preferably, the bottom of the boiler tube of the adjacent tube side of multi-way radiating furnace tube is mutually interconnected by bottom linker
It connecing, top is connected with each other by top link, when the single arrangement of each journey boiler tube of multi-way radiating furnace tube 1-4, adjacent tube side
The bottom linker of boiler tube is in the heteropleural of center line plane, and the top link of the boiler tube of adjacent tube side is in center line plane
Heteropleural, when the double arrangement of the boiler tube of the part tube side of multi-way radiating furnace tube 1-4, the bottom of the boiler tube for the adjacent tube side set of arranging together
Portion's connector is in the ipsilateral of center line plane, and the top link of the boiler tube for the adjacent tube side set of arranging together is in center line plane
It is ipsilateral.
Preferably, the bottom linker is elbow joint, and the elbow joint is set to the center
The two sides of line plane intersect at the center line plane, and the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.
It is highly preferred that each journey boiler tube is connected in burner hearth bottom using the elbow joint that S elbow and symmetrical bend pipe are composed
It connects, plane is not overlapped with plane where boiler tube where elbow joint.Connected between 1st journey boiler tube and the 2nd journey boiler tube by S elbow
It connects, is parallel to each other, and intersect with center line plane.
Preferably, elbow joint includes symmetrical bend pipe and the S type for being set to the symmetrical bend pipe at least one end
Bend pipe；
S type bend pipe is the stereochemical structure part of one one-tenth S type；
Symmetrical bend pipe is in a plane along the symmetrical bend pipe in center.
It is highly preferred that elbow joint includes symmetrical bend pipe and the S type bend pipe for being set to the symmetrical bend pipe both ends；
Preferably, the outlet end of the first journey boiler tube and the symmetrical bend pipe of elbow joint or S type bend pipe connect,
The S type bend pipe of the arrival end and elbow joint of Y-piece or palm shape pipe connects, and the outlet end of inverted Y-shaped pipe or palm shape pipe connects phase
The arrival end of adjacent tube side boiler tube；
Inverted Y-shaped pipe have two entrances and one outlet；
Palm shape pipe pipe have more than two entrances and one outlet.
Preferably, the diameter of each journey boiler tube of multi-way radiating furnace tube 1-4 from the inlet to the outlet, by tube side sequence pipe
Diameter gradually amplifies or uses identical caliber.
Preferably, residence time of the processing medium in multi-way radiating furnace tube 1-4 is 0.3~1.0 second.
Preferably, each journey boiler tube of multi-way radiating furnace tube 1-4 is alternatively arranged using low temperature tube side with high temperature tube side
Or between high temperature tube side and low temperature tube side part interlaced arrangement form.
Preferably, quenching boiler 1-7 is double-jacket tube formula quenching boiler, traditional type quenching boiler, bathtub formula chilling
Boiler or quick quenching boiler.
Preferably, double-jacket tube formula quenching boiler is such as Linear shape cooling boiler, U-shaped quenching boiler or second level chilling pot
Furnace.
Embodiment 1
As shown in Figure 1, a kind of Multipass tubular ethylene cracking furnace, including at least one radiant section 1-1, convection section 1-3, chilling pot
Furnace 1-7, HP steam drum 1-8 and air-introduced machine 1-9:
Combustion bottom burner 1-5 is placed in the bottom of radiant section 1-1 and/or is placed with side wall combustion in the side of radiant section 1-1
Burner 1-6, vertical row is furnished with multiple groups multi-way radiating furnace tube 1-4 in radiant section 1-1；
Horizontal arrangement has multiple groups convection coil in convection section 1-3；
It is connected between radiant section 1-1 and convection section 1-3 by flue 1-2；
Multi-way radiating furnace tube 1-4 is four to ten stroke radiation furnace tubes；
All multi-way radiating furnace tube 1-4 are in a plane, can be along the single arrangement in the center of burner hearth, and part boiler tube can also
Along the double arrangement in burner hearth center；
The inlet tube and outlet of multi-way radiating furnace tube 1-4 distinguishes centralized arrangement；
The bottom of multi-way radiating furnace tube 1-4 is connected using elbow joint；The top connecting tube of each group radiating furnace tube does not exist
In plane where radiating furnace tube；
Elbow joint is that a both ends are S type bend pipe, the combined member that centre is symmetrical bend pipe.
In specific implementation, S type bend pipe is the stereochemical structure part of one one-tenth S type；
Symmetrical bend pipe is in a plane along the symmetrical bend pipe in center；
The first journey boiler tube of multi-way radiating furnace tube 1-4 merges into a root canal using inverted Y-shaped pipe in the second journey boiler tube lower end；It is more
The diameter of stroke radiation furnace tube 1-4 gradually amplifies from the inlet to the outlet, by tube side sequence caliber or uses identical caliber；Processing medium
Residence time in multi-way radiating furnace tube 1-4 is 0.3~1.0 second.
The arrangement of open oven pipe for by taking the boiler tube of the single arrangement of quadruple pass as an example.The inlet tube and outlet of each group boiler tube are distinguished
The inlet tube of centralized arrangement, i.e. the first journey boiler tube 1 of each group is adjacent, and the second journey boiler tube 2 of each group is adjacent, the third journey of each group
Boiler tube 3 is adjacent, and the outlet of the quadruple pass boiler tube 4 of each group is adjacent.Boiler tube uses single arrangement, and each journey boiler tube is generally aligned in the same plane
It is interior；Top connecting tube between each journey boiler tube is respectively in the two sides of boiler tube central plane；Bottom between each journey boiler tube is using curved
The connection of pipe sub-assembly, the plane where elbow joint intersect with the plane where boiler tube, the bottom connection of two adjacent groups boiler tube
Heteropleural of the part in boiler tube central plane, the heteropleural of the top link of two adjacent groups boiler tube in boiler tube central plane.
The one or more groups of identical multi-way radiating furnace tube 1-4 of arrangement in one pyrolysis furnace.It can be used between each journey boiler tube
Low temperature tube side and high temperature tube side be alternatively arranged or high temperature low temperature tube side between part interlaced arrangement form, can not also use；
Quenching boiler uses double-jacket tube formula quenching boiler, such as Linear shape cooling boiler, U-shaped quenching boiler, secondary quenching boiler
Deng can also be using the boilers such as traditional type, bathtub formula, quick chilling.The arrangement form of the utility model boiler tube is not limited to attached drawing
It is listed.The radiant coil of the utility model is suitable for cracked gas raw material and liquid charging stock, can be used for creating pyrolysis furnace or counterincision
It solves furnace and carries out capacity expansion revamping.
Fig. 7-1 and Fig. 7-2 be a kind of layout viewing of quadruple pass boiler tube in the prior art, boiler tube arrangement mode be 1,2,3,
4, each journey boiler tube is arranged by flow direction sequence.First journey boiler tube is inlet tube, and quadruple pass boiler tube is outlet, and flow direction of material sequence is
1,2,3,4 journey.First journey boiler tube uses branch's variable diameter boiler tube, and boiler tube uses single arrangement, and each journey boiler tube is in the same plane.
Using conventional bend pipe connection between each journey boiler tube, bridge piece is located at boiler tube institute planar.
Embodiment 2
Fig. 2-1,2-2,2-3 are one embodiment of the single arrangement boiler tube of quadruple pass:
In figure, putting in order for quadruple pass boiler tube is 1,2,3,4, and each journey boiler tube is arranged in order.First journey boiler tube is entrance
Pipe, quadruple pass boiler tube are outlet, and flow direction of material sequence is 1,2,3,4 journeys, is carried out with cracking reaction by flow direction sequence boiler tube
Temperature steps up, and the first journey boiler tube 1 and the second journey boiler tube 2 are low temperature tube side, and third journey boiler tube 3 and quadruple pass boiler tube 4 are height
Warm tube side.Second journey boiler tube is branch's variable diameter boiler tube, and the first journey boiler tube merges into one using inverted Y-shaped pipe in the second journey boiler tube lower end
Root canal.Boiler tube uses single arrangement, and the center line of each journey boiler tube is in the same plane.Each journey boiler tube uses S in burner hearth bottom
Bend pipe is connect with the elbow joint that symmetrical bend pipe is composed, and elbow joint is set to the two sides of the center line plane,
The center line plane is intersected at, the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.2, on 3 journey boiler tubes
Between end using top link connect, connector not boiler tube institute planar.
Each journey boiler tube centralized arrangement of each group boiler tube, each group boiler tube with journey boiler tube bottom and top connecting tube in boiler tube
Plane heteropleural.
Embodiment 3
Fig. 3-1,3-2,3-3 are second embodiment of the single arrangement boiler tube of six journeys:
In figure, putting in order for six journey boiler tubes is 1,2,3,4,5,6, and each journey boiler tube is arranged in order.First journey boiler tube is
Inlet tube, the 6th journey boiler tube are outlet, and flow direction of material sequence is 1,2,3,4,5,6 journeys, is carried out with cracking reaction suitable by flowing to
The temperature of sequence boiler tube steps up, and the first journey boiler tube 1, the second journey boiler tube 2 are low temperature tube side, the 5th journey boiler tube 5 and the 6th journey furnace
Pipe 6 is high temperature tube side, and third journey boiler tube 3 and 4 temperature of quadruple pass boiler tube are between 1,2 journey low temperature and 5,6 journey high temperature；4th
Journey boiler tube is branch's variable diameter boiler tube, and third journey boiler tube merges into a root canal using inverted Y-shaped pipe in quadruple pass boiler tube lower end.Boiler tube is adopted
It is in the same plane with the center line of single arrangement, each journey boiler tube.Each journey boiler tube is in burner hearth bottom using S bend pipe and symmetrical
The elbow joint connection that bend pipe is composed, plane is not overlapped with plane where boiler tube where elbow joint, 1,2 journey boiler tubes
Between elbow couplings be parallel to each other, and intersect with center line plane；3, elbow couplings are arranged between 4 journeys and 5,6 journey boiler tubes
In the two sides of the center line plane, the center line plane is intersected at.2, it is used between 3 journey boiler tubes and 4,5 journey boiler tube upper ends
Top link connection, connector not boiler tube institute planar.
Each journey boiler tube centralized arrangement of each group boiler tube, each group boiler tube with journey boiler tube bottom and top connecting tube in boiler tube
Plane heteropleural.
Embodiment 4
Fig. 4-1,4-2,4-3 are the third embodiment of the double arrangement boiler tube of quadruple pass:
In figure, putting in order for quadruple pass boiler tube is 1,2,3,4, and each journey boiler tube is arranged in order.First journey boiler tube is entrance
Pipe, quadruple pass boiler tube are outlet, and flow direction of material sequence is 1,2,3,4 journeys, is carried out with cracking reaction by flow direction sequence boiler tube
Temperature steps up, and the first journey boiler tube 1 and the second journey boiler tube 2 are low temperature tube side, and third journey boiler tube 3 and quadruple pass boiler tube 4 are height
Warm tube side.Second journey boiler tube is branch's variable diameter boiler tube, and the first journey boiler tube merges into one using inverted Y-shaped pipe in the second journey boiler tube lower end
Root canal.Boiler tube uses double arrangement before branch's variable diameter, and the center line of each journey boiler tube is in the same plane.Each journey boiler tube exists
Burner hearth bottom is connect using S elbow with the elbow joint that symmetrical bend pipe is composed, and elbow joint is set to the center
The two sides of line plane intersect at the center line plane, and the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.
2, between 3 journey boiler tube upper ends using top link connect, connector not boiler tube institute planar.
Each journey boiler tube centralized arrangement of each group boiler tube, each group boiler tube with journey boiler tube bottom and top connecting tube in boiler tube
Plane heteropleural.
Embodiment 5
Fig. 5-1,5-2,5-3,5-4 are the 4th embodiment of the double arrangement boiler tube of six journeys:
In figure, putting in order for six journey boiler tubes is 1,2,3,4,5,6, and each journey boiler tube is arranged in order.First journey boiler tube is
Inlet tube, the 6th journey boiler tube are outlet, and flow direction of material sequence is 1,2,3,4,5,6 journeys, is carried out with cracking reaction suitable by flowing to
The temperature of sequence boiler tube steps up, and the first journey boiler tube 1, the second journey boiler tube 2 are low temperature tube side, the 5th journey boiler tube 5 and the 6th journey furnace
Pipe 6 is high temperature tube side, and third journey boiler tube 3 and 4 temperature of quadruple pass boiler tube are between 1,2 journey low temperature and 5,6 journey high temperature.4th
Journey boiler tube is branch's variable diameter boiler tube, and third journey boiler tube merges into a root canal using inverted Y-shaped pipe in quadruple pass boiler tube lower end.Boiler tube exists
Double arrangement is used before branch's variable diameter, the center line of each journey boiler tube is in the same plane.Each journey boiler tube is adopted in burner hearth bottom
It is connect with S elbow with the elbow joint that symmetrical bend pipe is composed, elbow joint is set to the two of the center line plane
Side intersects at the center line plane, and the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.2,3 journey boiler tube
And 4,5 connected using top link between journey boiler tube upper end, connector not boiler tube institute planar.
Each journey boiler tube centralized arrangement of each group boiler tube, each group boiler tube with journey boiler tube bottom and top connecting tube in boiler tube
Plane heteropleural.
Embodiment 6
Fig. 6-1,6-2,6-3,6-4,6-5 are the 5th embodiment of the double arrangement boiler tube of six journeys:
In figure, putting in order for six journey boiler tubes is 1,2,3,4,5,6, and each journey boiler tube is arranged in order.First journey boiler tube is
Inlet tube, the 6th journey boiler tube are outlet, and flow direction of material sequence is 1,2,3,4,5,6 journeys, is carried out with cracking reaction suitable by flowing to
The temperature of sequence boiler tube steps up, and the first journey boiler tube 1, the second journey boiler tube 2 are low temperature tube side, the 5th journey boiler tube 5 and the 6th journey furnace
Pipe 6 is high temperature tube side, and third journey boiler tube 3 and 4 temperature of quadruple pass boiler tube are between 1,2 journey low temperature and 5,6 journey high temperature.4th
Journey boiler tube is branch's variable diameter boiler tube, and third journey boiler tube merges into a root canal using inverted Y-shaped pipe in quadruple pass boiler tube lower end.Boiler tube exists
Double arrangement is used before branch's variable diameter, the center line of each journey boiler tube is in the same plane.Each journey boiler tube is adopted in burner hearth bottom
It is connect with S elbow with the elbow joint that symmetrical bend pipe is composed, elbow joint is set to the two of the center line plane
Side intersects at the center line plane, and the elbow joint ipsilateral positioned at the center line plane is arranged in parallel.2,3 journey boiler tube
And 4,5 connected using top link between journey boiler tube upper end, connector not boiler tube institute planar.
Each journey boiler tube centralized arrangement of each group boiler tube, each group boiler tube with journey boiler tube bottom and top connecting tube in boiler tube
Plane heteropleural.
Each embodiment of the utility model is described above, above description is exemplary, and non-exclusive, and
And it is also not necessarily limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for
Many modifications and changes are obvious for those skilled in the art.
Claims (9)
1. a kind of ethane cracking furnace using branch's multi-way boiler tube, comprising:
At least one radiant section (1-1), the bottom of the radiant section are placed with combustion bottom burner (1-5), in radiant section (1-1)
Side is placed with radiant wall burner (1-6), is furnished at least one set of or multiple groups multi-way radiating furnace tube in radiant section (1-1) interior vertical row
(1-4)；
Convection section (1-3), the interior horizontal arrangement of the convection section (1-3) have a multiple groups convection coil, the radiant section (1-1) and described
Convection section (1-3) is connected by flue (1-2)；
Quenching boiler (1-7), HP steam drum (1-8) and air-introduced machine (1-9)；
It is characterized by:
The multi-way radiating furnace tube (1-4) is four to ten journey branch radiating furnace tubes；
First journey boiler tube of the multi-way radiating furnace tube (1-4) is merged in the second journey boiler tube lower end using inverted Y-shaped pipe or palm shape pipe
For the third journey boiler tube of a root canal and/or the multi-way radiating furnace tube (1-4) quadruple pass boiler tube lower end using inverted Y-shaped pipe or
Palm shape pipe merges into a root canal；
Each journey boiler tube of the multi-way radiating furnace tube (1-4) is double arrangement, and the furnace tube centerline of the same boiler tube set of arranging is equal
It is located in the same plane, which is center line plane；
Each journey boiler tube of the multi-way radiating furnace tube (1-4) distinguishes centralized arrangement, the first journey of each group multi-way radiating furnace tube (1-4)
The inlet tube of boiler tube (1) is adjacent, and the outlet of last journey boiler tube of each group multi-way radiating furnace tube (1-4) is adjacent, intermediate each journey
Boiler tube is adjacent respectively.
2. the ethane cracking furnace according to claim 1 using branch's multi-way boiler tube, it is characterised in that: the multi-way radiation
The bottom of the boiler tube of the adjacent tube side of boiler tube is connected with each other by bottom linker, and top is connected with each other by top link,
When the single arrangement of each journey boiler tube of the multi-way radiating furnace tube (1-4), the bottom linker of the boiler tube of adjacent tube side is in described
The heteropleural of heart line plane, the top link of the boiler tube of adjacent tube side the center line plane heteropleural, when the multi-way spoke
When penetrating the double arrangement of boiler tube of the part tube side of boiler tube (1-4), the bottom linker of the boiler tube for the adjacent tube side set of arranging together exists
The center line plane it is ipsilateral, the top link of the boiler tube for the adjacent tube side set of arranging together is in the same of the center line plane
Side.
3. the ethane cracking furnace according to claim 2 using branch's multi-way boiler tube, it is characterised in that: the bottom connection
Part is elbow joint, and the elbow joint is set to the two sides of the center line plane, intersects at the center line plane,
The elbow joint ipsilateral positioned at the center line plane is arranged in parallel.
4. the ethane cracking furnace according to claim 3 using branch's multi-way boiler tube, it is characterised in that: the bend pipe combination
Part includes symmetrical bend pipe and the S type bend pipe for being set to the symmetrical bend pipe at least one end；
The S type bend pipe is the stereochemical structure part of one one-tenth S type；
The symmetrical bend pipe is in a plane along the symmetrical bend pipe in center.
5. the ethane cracking furnace according to claim 4 using branch's multi-way boiler tube, it is characterised in that:
The outlet end of the first journey boiler tube is connect with the symmetrical bend pipe of the elbow joint or S type bend pipe, the inverted Y-shaped pipe
Or the arrival end of palm shape pipe is connect with the S type bend pipe of the elbow joint, the outlet end connection of the inverted Y-shaped pipe or palm shape pipe
The arrival end of adjacent tube side boiler tube；
The inverted Y-shaped pipe has two entrances and one outlet；
The palm shape pipe pipe has more than two entrances and one outlet.
6. using the ethane cracking furnace of branch's multi-way boiler tube described according to claim 1~one of 5, it is characterised in that: described
The diameter of each journey boiler tube of multi-way radiating furnace tube (1-4) gradually amplifies from the inlet to the outlet, by tube side sequence caliber or using phase
Same caliber.
7. the ethane cracking furnace according to claim 1 using branch's multi-way boiler tube, it is characterised in that: the multi-way radiation
Each journey boiler tube of boiler tube (1-4) using low temperature tube side and high temperature tube side be alternatively arranged or high temperature tube side and low temperature tube side between part
The form of interlaced arrangement.
8. the ethane cracking furnace according to claim 1 using branch's multi-way boiler tube, it is characterised in that: the quenching boiler
(1-7) is double-jacket tube formula quenching boiler, traditional type quenching boiler, bathtub formula quenching boiler or quick quenching boiler.
9. the ethane cracking furnace according to claim 8 using branch's multi-way boiler tube, it is characterised in that: the double-jacket tube formula
Quenching boiler is such as Linear shape cooling boiler, U-shaped quenching boiler or secondary quenching boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231645.6U CN209555154U (en) | 2018-08-01 | 2018-08-01 | A kind of ethane cracking furnace using branch's multi-way boiler tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231645.6U CN209555154U (en) | 2018-08-01 | 2018-08-01 | A kind of ethane cracking furnace using branch's multi-way boiler tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209555154U true CN209555154U (en) | 2019-10-29 |
Family
ID=68298498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821231645.6U Active CN209555154U (en) | 2018-08-01 | 2018-08-01 | A kind of ethane cracking furnace using branch's multi-way boiler tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209555154U (en) |
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2018
- 2018-08-01 CN CN201821231645.6U patent/CN209555154U/en active Active
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