CN201520747U - Multipass tubular ethylene cracking furnace - Google Patents
Multipass tubular ethylene cracking furnace Download PDFInfo
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- CN201520747U CN201520747U CN2009202201885U CN200920220188U CN201520747U CN 201520747 U CN201520747 U CN 201520747U CN 2009202201885 U CN2009202201885 U CN 2009202201885U CN 200920220188 U CN200920220188 U CN 200920220188U CN 201520747 U CN201520747 U CN 201520747U
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Abstract
The utility model relates to a multipass tubular ethylene cracking furnace, which adopts a multipass furnace tube in a radiant section; the number of furnace tube passes is 4-10; the configurations of the furnace tubes are a branched reducing pipe or an unbranched reducing pipe, the residence time is 0.3-1.0 second, and the furnace tubes are distributed at the center of a hearth in a single row way. High-temperature tube pass furnace tubes and low-temperature tube pass furnaces are all or partially arranged in a staggered way; the bottoms of all the tube passes are connected by all or partially adopting connecting parts of combining S bent pipes and symmetrical bent pipes. The utility model overcomes the defects of the prior art, and provides a multipass tubular ethylene cracking furnace with a new hearth structure, which can improve the heating conditions of the furnace tubes, lead the heating of the furnace tubes to be more uniform, improve the mechanical performance of the furnace tubes at the radiant section, enhance the online rate of the cracking furnace, reduce the operation cost, prolong the service life of the furnace tubes, and finally realize improvement of economic benefits.
Description
Technical field
The utility model belongs to petrochemical industry, is specifically related to the boiler tube structure of the ethane cracking furnace in a kind of petrochemical complex production.
Background technology
The cracking of ethylene technology that is adopted in the petrochemical complex ethylene unit is mainly U.S. LUMMUS company, Stone﹠amp; Webster company, Kellog﹠amp; Braun Root company, the CBL pyrolyzer that German Linde company, Technip (KTI) company and the Sinopec in Europe developed.For multitube journey pyrolyzer, their technology is as follows:
U.S. LUMMUS company: the SRT-3 type adopts 4-2-1-1 or 4-2-1-1-1-1 boiler tube, SRT-1 type employing 1-1-1-1-1-1 or the isometrical boiler tube of 1-1-1-1-1-1-1-1, and the SRT-4 type adopts the 8-4-1-1 boiler tube, and common two groups of boiler tubes are joined a chilling (used heat) boiler;
U.S. Stone﹠amp; Webster company: adopt W (1-1-1-1 quadruple pass reducing) type or M (1-1-1-1-1-1 six journey reducings) type boiler tube, a common group or two group's boiler tubes are joined a linear chilling (used heat) boiler, all the bottom heat supply;
U.S. Kellog﹠amp; Braun Root company: adopt SC-4 type (1-1-1-1 quadruple pass reducing), a common group or two group's boiler tubes are joined a linear chilling (used heat) boiler, all the bottom heat supply;
Germany Linde company: adopt 2-2-2-2-1-1 six journey boiler tubes or 2-2-1-1 quadruple pass boiler tube, common four group's boiler tubes are joined a chilling (used heat) boiler;
Technip (Dutch KTI) company: adopt GK-3 type 2-2-1-1, GK-4 type 4-4-2-1 and SMK type 1-1-1-1 quadruple pass boiler tube, common 2～4 group's boiler tubes are joined a chilling (used heat) boiler, adopt SMK type boiler tube, a common group or two group's boiler tubes are joined a linear chilling (used heat) boiler.
The boiler tube arrangement mode that each company adopts is by direction of flow boiler tube number of passes series arrangement, and each journey boiler tube bottom adopts the ordinary construction elbow to connect.
For make a kind of to the cracked gas raw material preferably radiating furnace tube also adapt to liquid starting material, realization is kept suitable running period and is had adaptability to raw material preferably, present most of company all adopts 4～6 journeys, and (～60m) branch reducing or be regardless of the medium selectivity boiler tube in principal deformation footpath will be controlled at 0.4～1.0s the residence time.First journey or preceding two Cheng Caiyong minor diameter boiler tubes utilize the big characteristics of its specific surface area to reach the purpose that is rapidly heated, and second Cheng Yihou adopts larger-diameter boiler tube to reduce the influence to coking susceptibility.The medium selectivity radiant coil of the quadruple pass that is adopted has boiler tubes such as 4-2-1-1 type, 2-2-1-1 type, 1-1-1-1,2-1-1-1 type.
Quenching boiler has traditional type (Si Mite, Bao Xige), bathtub formula one-level quenching boiler, secondary chilling and linear quenching boiler, and linear quenching boiler has the long advantage that does not need hydraulic decoking running period.Can 1-1-1-1 type, 2-1-1-1 type and 2-2-1-1 type etc. be arranged with the radiant coil of linear quenching boiler coupling.
1-1-1-1 type boiler tube can with linear quenching boiler coupling, can the cracked gas raw material also can the cracking liquid starting material.
The Pyrocrack2-2 of Linde company (2-2-1-1) boiler tube can the cracked gas raw material also can the cracking liquid starting material, but it is poor to compare its mechanical property of 1-1-1-1 type.
Generally speaking, each tube side arranged in sequence of prior art improves gradually by tube side order radiating furnace tube pipe surface temperature, has certain radiative transfer between the high temperature tube side, and to reducing pipe surface temperature, there is certain counter productive the prolongation cycle of operation; In addition.Adopt common elbow structure to connect between each tube side of multitube journey boiler tube of prior art, be unfavorable for absorbing the thermal expansion between each journey boiler tube, long-time running causes the crooking of the tubes easily, causes the cycle of operation to shorten, and reduces boiler tube work-ing life.
The utility model content
The purpose of this utility model is exactly the defective at prior art, proposing a kind of boiler tube that improves is subjected to thermal conditions, makes the boiler tube mechanical property more even, that improve radiant coil of being heated, improve pyrolyzer online rate, reduce process cost and prolong boiler tube work-ing life, the final multitube journey ethane cracking furnace of realizing the new boiler tube structure of increasing economic efficiency.
Multitube journey ethane cracking furnace of the present utility model is achieved in that
A kind of multitube journey ethane cracking furnace of the present utility model, described pyrolyzer comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups multipass radiating 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 four to ten stroke radiation furnace tubes;
All radiating furnace tubes are in a plane along the single layout in stove center;
Adopt the low temperature tube side between each journey boiler tube and the high temperature tube side is spaced or high temperature low temperature tube side between the form of part staggered arrangement;
Each journey boiler tube bottom all adopts S type bend pipe to be connected with the bend pipe subassembly of symmetrical bend pipe combination, or part adopts, and S type bend pipe is connected with the bend pipe subassembly of symmetrical bend pipe combination, part adopts conventional bend pipe to connect.
In concrete enforcement,
Described S type bend pipe is the three-dimensional arrangement part of one one-tenth S type.
Described symmetrical bend pipe be in a plane along the symmetric bend pipe of medullary ray.
Described bend pipe subassembly is that two ends are S type bend pipe, and the centre is the combined member of symmetrical bend pipe.
Described radiating furnace tube can be take-off pipe or take-off pipe not; When adopting take-off pipe, take-off pipe is merged by Y-piece; Each journey boiler tube diameter can amplify or adopt identical caliber from the outlet that enters the mouth gradually by tube side order caliber; The residence time of processing medium in radiating furnace tube was at 0.3～1.0 second.
A described quadruple pass boiler tube be arranged as the 1st journey inlet tube and the 4th journey outlet pipe lays respectively at both sides, high temperature tube side and low temperature tube side are staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
A described quadruple pass boiler tube is arranged as the 1st journey inlet tube and the adjacent layout of the 4th journey outlet pipe, and high temperature tube side and low temperature tube side are staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and last journey outlet pipe lays respectively at both sides, the high temperature tube side and the low temperature tube side is staggered or the part be staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and the adjacent layout of last journey outlet pipe, and high temperature tube side and low temperature tube side are staggered or part is staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, plane, bend pipe subassembly place and boiler tube place Plane intersects, and conventional bend pipe is positioned at the boiler tube plane.
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and the non-conterminous layout of last journey outlet pipe, and high temperature tube side and low temperature tube side are staggered or part is staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, plane, bend pipe subassembly place and boiler tube place Plane intersects, and conventional bend pipe is positioned at the boiler tube plane.
In addition, a pyrolyzer of the present utility model can be arranged the radiating furnace tube that one or more groups is identical.
Prior art is compared, and the beneficial effects of the utility model are:
(1) each journey boiler tube adopts high temperature furnace pipe and low temperature boiler tube interval or the form that partly is staggered, can reduce the thermal radiation influence between the high temperature pipe row, help reducing tube skin temperature, reach the cycle of operation that prolongs pyrolyzer and prolong the radiating furnace tube purpose in work-ing life;
(2) the boiler tube bottom adopts the connection of bend pipe subassembly to replace conventional elbow directly to connect, can effectively improve the radiating furnace tube mechanical property, help absorbing because the thermal stresses that adjacent two journey furnace tube temperature differences cause, prevent boiler tube because the bending that thermal stresses causes, avoid because the local superheating that the crooking of the tubes causes prolongs the pyrolyzer cycle of operation and prolongs the radiating furnace tube purpose in work-ing life thereby reach;
Description of drawings
Fig. 1 is a prior art pyrolyzer layout drawing
Fig. 2 is quadruple pass boiler tube scheme one layout drawing
Fig. 3 is quadruple pass boiler tube scheme two layout drawings
Fig. 4 is quadruple pass boiler tube scheme three layout drawings (Figure of abstract)
Fig. 5 is quadruple pass boiler tube scheme four layout drawings
Fig. 6 is quadruple pass boiler tube scheme five layout drawings
Fig. 7 is quadruple pass boiler tube scheme six layout drawings
Fig. 8 is quadruple pass boiler tube scheme seven layout drawings
Fig. 9 is quadruple pass boiler tube scheme eight layout drawings
Figure 10 is six journey boiler tube embodiments, one layout drawings
Figure 11 is six journey boiler tube embodiments, two layout drawings
Figure 12 is six journey boiler tube embodiments, three layout drawings
Figure 13 is six journey boiler tube embodiments, four layout drawings
Figure 14 is six journey boiler tube embodiments, five layout drawings
Figure 15 is six journey boiler tube embodiments, six layout drawings
Figure 16 is six journey boiler tube embodiments, seven layout drawings
Figure 17 is six journey boiler tube embodiments, eight layout drawings
Figure 18 is six journey boiler tube embodiments, nine layout drawings
Figure 19 is six journey boiler tube embodiments, ten layout drawings
Figure 20 is six journey boiler tube embodiments, 11 layout drawings
Figure 21 is six journey boiler tube embodiments, 12 layout drawings
Figure 22 is six journey boiler tube embodiments, 13 layout drawings
Figure 23 is six journey boiler tube embodiments, 14 layout drawings
Figure 24 is six journey boiler tube embodiments, 15 layout drawings
Figure 25 is six journey boiler tube embodiments, 16 layout drawings
Figure 26 is six journey boiler tube embodiments, 17 layout drawings
Figure 27 is six journey boiler tube embodiments, 18 layout drawings
Figure 28 is six journey boiler tube embodiments, 19 layout drawings
Figure 29 is six journey boiler tube embodiments, 20 layout drawings
Figure 30 is six journey boiler tube embodiments, 21 layout drawings
Figure 31 is six journey boiler tube embodiments, 22 layout drawings
Figure 32 is a prior art boiler tube layout drawing
Among Fig. 1,1. being radiation section, 2. is flue, 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.
In Fig. 2～32,1 first journey boiler tube, 2 is the second journey boiler tube, and 3 is the 3rd journey boiler tube, and 4 is the quadruple pass boiler tube, and 5 is the 5th journey boiler tube, 6 is the 6th journey boiler tube.
Embodiment
Fig. 2 is a quadruple pass boiler tube embodiment one:
It is 1,3,2,4 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between the 3 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Fig. 3 is a quadruple pass boiler tube embodiment two:
It is 1,3,2,4 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes adopt conventional bend pipe to connect between burner hearth bottom and 2,3 journey boiler tubes upper end, and bridge piece is in plane, boiler tube place.
Fig. 4 is a quadruple pass boiler tube embodiment three:
It is 1,3,2,4 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between the 3 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Fig. 5 is a quadruple pass boiler tube embodiment four:
It is 1,3,2,4 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.1,2 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes adopt conventional bend pipe to connect between burner hearth bottom and 2,3 journey boiler tubes upper end, and bridge piece is in plane, boiler tube place.
Fig. 6 is a quadruple pass boiler tube embodiment three:
It is 1,4,2,3 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between the 3 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Fig. 7 is a quadruple pass boiler tube embodiment four:
It is 1,4,2,3 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes adopt conventional bend pipe to connect between burner hearth bottom and 2,3 journey boiler tubes upper end, and bridge piece is in plane, boiler tube place.
Fig. 8 is a quadruple pass boiler tube embodiment five:
It is 1,4,2,3 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.The single layout of boiler tube, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between the 3 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Fig. 9 is a quadruple pass boiler tube embodiment six:
It is 1,4,2,3 that the quadruple pass boiler tube puts in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.The single layout of boiler tube, each journey boiler tube is positioned at same plane.1,2 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes adopt conventional bend pipe to connect between burner hearth bottom and 2,3 journey boiler tubes upper end, and bridge piece is in plane, boiler tube place.
Figure 10 is six journey boiler tube embodiments one:
It is 1,4,5,2,3,6 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 11 is six journey boiler tube embodiments two:
It is 1,4,5,2,3,6 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.The single layout of boiler tube, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 12 is six journey boiler tube embodiments three:
It is 1,4,5,2,3,6 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 and 3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end.Bridge piece is in the boiler tube plane.
Figure 13 is six journey boiler tube embodiments four:
It is 1,4,5,2,3,6 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.1,2 and 3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 14 is six journey boiler tube embodiments five:
Six journey boiler tubes put in order be 1,6,3,2,5,4,, high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 15 is six journey boiler tube embodiments six:
It is 1,6,3,2,5,4 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 16 is six journey boiler tube embodiments seven:
Six journey boiler tubes put in order be 1,6,3,2,5,4,, high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 17 is six journey boiler tube embodiments eight:
It is 1,6,3,2,5,4 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.1,2 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 18 is six journey boiler tube embodiments nine:
Six journey boiler tubes put in order be 1,6,2,3,5,4,, high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 19 is six journey boiler tube embodiments ten:
It is 1,6,2,3,5,4 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 20 is six journey boiler tube embodiments 11:
Six journey boiler tubes put in order be 1,6,2,3,5,4,, high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 21 is six journey boiler tube embodiments 12:
It is 1,6,2,3,5,4 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.1,2 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.3,4 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 22 is six journey boiler tube embodiments 13:
It is 1,2,3,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and 3,4 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.1,2 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 23 is six journey boiler tube embodiments 14:
It is 1,2,3,6,4,5 that six journey boiler tubes put in order, and high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.3,4 and 5,6 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.1,2 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 24 is six journey boiler tube embodiments 15:
It is 1,2,3,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.1,2 and 5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 25 is six journey boiler tube embodiments 16:
It is 1,2,3,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.1,2 and 5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 26 is six journey boiler tube embodiments 17:
It is 1,3,2,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bridge piece subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 27 is six journey boiler tube embodiments 18:
It is 1,3,2,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bridge piece subassembly place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 28 is six journey boiler tube embodiments 19:
It is 1,3,2,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 and 3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 29 is six journey boiler tube embodiments 20:
It is 1,3,2,6,4,5 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.Boiler tube adopts not branch's reducing boiler tube.Single layout, each journey boiler tube is positioned at same plane.1,2 and 3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and adopts conventional bend pipe to connect between 2,3 and 4, the 5 journey boiler tubes upper end, and bridge piece is in the boiler tube plane.
Figure 30 is six journey boiler tube embodiments 21:
It is 1,2,3,5,4,6 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First and second journey is branch's reducing boiler tube.Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Each journey boiler tube adopts the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly pipe place does not overlap with plane, boiler tube place.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Figure 31 is six journey boiler tube embodiments 22:
It is 1,2,3,5,4,6 that six journey boiler tubes put in order, and part high temperature pipe row and cryotron row are staggered.The first journey pipe is an inlet tube, and the 6th journey pipe is an outlet pipe, and flow direction of material is 1,2,3,4,5,6 journeys in proper order, carries out progressively improving by flow direction order furnace tube temperature with scission reaction.First and second journey is branch's reducing boiler tube, and boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.1,2 and 3,4 journey boiler tubes adopt the S bend pipe to be connected with symmetrical bend pipe subassembly at burner hearth bottom, and plane, bend pipe subassembly place does not overlap with plane, boiler tube place.5,6 journey boiler tubes bottom adopts conventional bend pipe to connect, and bridge piece is in the boiler tube plane.2, adopt conventional bend pipe to connect between 3 and 4, the 5 journey boiler tubes upper end, bridge piece is in plane, boiler tube place.
Technique scheme is several embodiment of the present utility model, for those skilled in the art, on the basis that the utility model discloses application method and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the utility model, therefore previously described mode just preferably or only is how the explanation utility model realizes, and does not have restrictive meaning.
Quenching boiler of the present utility model mainly adopts two telescoping quenching boilers (linear quenching boiler, U type quenching boiler, secondary quenching boiler etc.), also can adopt boilers such as traditional type, bathtub formula, rapid quench.It is listed that the layout pattern of boiler tube is not limited to accompanying drawing.The utility model radiant coil is suitable for cracked gas raw material and liquid starting material, can be used for newly-built pyrolyzer or pyrolyzer is carried out capacity expansion revamping.
Figure 32 arranges for a kind of quadruple pass boiler tube of prior art, and the boiler tube arrangement mode is 1,2,3,4, and each journey boiler tube is by flowing to series arrangement.The first journey pipe is an inlet tube, and the quadruple pass pipe is an outlet pipe, and flow direction of material is 1,2,3,4 journeys in proper order.The first journey pipe adopts branch's reducing boiler tube, and boiler tube adopts single layout, and each journey boiler tube is positioned at same plane.Adopt conventional bend pipe to connect between each journey boiler tube, bridge piece is positioned at plane, boiler tube place.
Claims (9)
1. multitube journey ethane cracking furnace, described pyrolyzer comprises:
A) at least one radiation zone; Be arranged in base burning device and/or radiant wall burner in the radiation zone; Many groups multipass radiating 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 four to ten stroke radiation furnace tubes;
All radiating furnace tubes are in a plane along the single layout in stove center;
Adopt the low temperature tube side between each journey boiler tube and the high temperature tube side is spaced or high temperature low temperature tube side between the form of part staggered arrangement;
Each journey boiler tube bottom all adopts S type bend pipe to be connected with the bend pipe subassembly of symmetrical bend pipe combination, or part adopts, and S type bend pipe is connected with the bend pipe subassembly of symmetrical bend pipe combination, part adopts conventional bend pipe to connect.
2. multitube journey ethane cracking furnace according to claim 1 is characterized in that:
Described S type bend pipe is the three-dimensional arrangement part of one one-tenth S type;
Described symmetrical bend pipe be in a plane along the symmetric bend pipe of medullary ray;
Described bend pipe subassembly is that two ends are S type bend pipe, and the centre is the combined member of symmetrical bend pipe.
3. multitube journey ethane cracking furnace according to claim 2 is characterized in that:
Described radiating furnace tube is take-off pipe or take-off pipe not; When adopting take-off pipe, take-off pipe is merged by Y-piece; Each journey boiler tube diameter is from the outlet that enters the mouth, and amplifies gradually or adopts identical caliber by tube side order caliber.
4. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
A described quadruple pass boiler tube be arranged as the 1st journey inlet tube and the 4th journey outlet pipe lays respectively at both sides, high temperature tube side and low temperature tube side are staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
5. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
A described quadruple pass boiler tube is arranged as the 1st journey inlet tube and the adjacent layout of the 4th journey outlet pipe, and high temperature tube side and low temperature tube side are staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
6. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and last journey outlet pipe lays respectively at both sides, the high temperature tube side and the low temperature tube side is staggered or the part be staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, and plane, bend pipe subassembly place and boiler tube place Plane intersects, conventional bend pipe are positioned at the boiler tube plane.
7. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and the adjacent layout of last journey outlet pipe, and high temperature tube side and low temperature tube side are staggered or part is staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, plane, bend pipe subassembly place and boiler tube place Plane intersects, and conventional bend pipe is positioned at the boiler tube plane.
8. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
Described one six journey, eight journeys, ten journey boiler tubes are arranged as the 1st journey inlet tube and the non-conterminous layout of last journey outlet pipe, and high temperature tube side and low temperature tube side are staggered or part is staggered; Boiler tube adopts single layout, and each journey boiler tube is positioned at same plane; All or part of employing bend pipe subassembly connects between each journey boiler tube, plane, bend pipe subassembly place and boiler tube place Plane intersects, and conventional bend pipe is positioned at the boiler tube plane.
9. according to claim 2 or 3 described multitube journey ethane cracking furnaces, it is characterized in that:
A pyrolyzer is arranged the radiating furnace tube that one or more groups is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202201885U CN201520747U (en) | 2009-10-27 | 2009-10-27 | Multipass tubular ethylene cracking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202201885U CN201520747U (en) | 2009-10-27 | 2009-10-27 | Multipass tubular ethylene cracking furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201520747U true CN201520747U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202201885U Expired - Lifetime CN201520747U (en) | 2009-10-27 | 2009-10-27 | Multipass tubular ethylene cracking furnace |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011050573A1 (en) * | 2009-10-27 | 2011-05-05 | 中国石油化工股份有限公司 | Ethylene cracking furnace with multipass radiant furnace tubes |
| CN102911706A (en) * | 2011-08-05 | 2013-02-06 | 中国石油化工集团公司 | Ethylene cracking furnace adopting branch reducing furnace tubes |
| CN103773421A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Two-range radiant section furnace tube used for ethylene cracking furnace |
| CN103965948A (en) * | 2013-02-06 | 2014-08-06 | 中国石油化工集团公司 | Radiating furnace tube configuration |
| US9205400B2 (en) | 2011-07-28 | 2015-12-08 | China Petroleum & Chemical Corporation | Ethylene cracking furnace |
| CN106631661A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Steam cracking method |
| CN106631662A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Steam cracking method |
| CN106631660A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | A steam cracking method |
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2009
- 2009-10-27 CN CN2009202201885U patent/CN201520747U/en not_active Expired - Lifetime
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| CN102051197B (en) * | 2009-10-27 | 2014-05-21 | 中国石油化工股份有限公司 | Multi-tube pass ethylene pyrolysis furnace |
| WO2011050573A1 (en) * | 2009-10-27 | 2011-05-05 | 中国石油化工股份有限公司 | Ethylene cracking furnace with multipass radiant furnace tubes |
| US8900522B2 (en) | 2009-10-27 | 2014-12-02 | China Petroleum & Chemical Corporation | Ethylene cracking furnace with multi-pass radiant coil |
| KR101831341B1 (en) | 2009-10-27 | 2018-02-22 | 차이나 페트로리움 앤드 케미컬 코포레이션 | Ethylene cracking furnace with multipass radiant furnace tubes |
| US9604193B2 (en) | 2011-07-28 | 2017-03-28 | China Petroleum & Chemical Corporation | Ethylene cracking furnace |
| US9205400B2 (en) | 2011-07-28 | 2015-12-08 | China Petroleum & Chemical Corporation | Ethylene cracking furnace |
| CN102911706A (en) * | 2011-08-05 | 2013-02-06 | 中国石油化工集团公司 | Ethylene cracking furnace adopting branch reducing furnace tubes |
| CN103773421A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Two-range radiant section furnace tube used for ethylene cracking furnace |
| CN103773421B (en) * | 2012-10-23 | 2015-10-07 | 中国石油化工股份有限公司 | A kind of two-range radiant section boiler tube for ethane cracking furnace |
| CN103965948A (en) * | 2013-02-06 | 2014-08-06 | 中国石油化工集团公司 | Radiating furnace tube configuration |
| CN103965948B (en) * | 2013-02-06 | 2015-12-02 | 中国石油化工集团公司 | A kind of radiating furnace tube configuration |
| CN106631661A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Steam cracking method |
| CN106631662A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | Steam cracking method |
| CN106631660A (en) * | 2015-10-29 | 2017-05-10 | 中国石油化工股份有限公司 | A steam cracking method |
| CN106631662B (en) * | 2015-10-29 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of steam cracking method |
| CN106631660B (en) * | 2015-10-29 | 2019-12-24 | 中国石油化工股份有限公司 | Steam cracking method |
| CN106631661B (en) * | 2015-10-29 | 2019-12-24 | 中国石油化工股份有限公司 | Steam cracking method |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Sinopec Engineering Incorporation Patentee after: Sinopec Corp. Co-patentee after: Beijing Chemical Industry Research Institute, Sinopec Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Engrg Construction Co., SINOPEC Patentee before: Sinopec Corp. Co-patentee before: Beijing Chemical Industry Research Institute, Sinopec |
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Granted publication date: 20100707 Effective date of abandoning: 20091027 |
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