CN201068434Y - Linear quenching boiler inlet connecting element and quenching boiler thereof - Google Patents
Linear quenching boiler inlet connecting element and quenching boiler thereof Download PDFInfo
- Publication number
- CN201068434Y CN201068434Y CNU2007200324006U CN200720032400U CN201068434Y CN 201068434 Y CN201068434 Y CN 201068434Y CN U2007200324006 U CNU2007200324006 U CN U2007200324006U CN 200720032400 U CN200720032400 U CN 200720032400U CN 201068434 Y CN201068434 Y CN 201068434Y
- Authority
- CN
- China
- Prior art keywords
- web member
- quenching boiler
- tube
- inlet
- heat exchange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The utility model provides an inlet connecting piece of a linear quenching boiler and a quenching boiler using the inlet connecting piece. One end of the inlet connecting piece is connected with an outlet furnace tube (1) of a cracking furnace, and the other end is connected with a heat exchanging element (2) of a double sleeve tube. The utility model is characterized in that the inlet connecting piece of the linear quenching boiler is composed of an inlet tube (3) and a connecting piece (4), wherein, the connecting piece adopts a double wall tube-shaped structure, the diameter of the inner tube of the connecting piece is matched with the diameter of the inner tube (5) of the heat exchanging element (2) of the double sleeve tube, an inner tube (6) at the bottom part of the connecting piece overturns outwards and forms an outer tube (7), and the bottom part presents a circular arc shape. The utility model has the advantages that the residence time of cracked gas is short, the mechanical decoking is not required, the structure is simple, the space is saved, and the overall cost is low. The temperature of the metal wall of the connecting piece is low, thereby the higher thermal stress born, the plastic deformation, as well as the creep can be avoided without a thermal insulation module, simultaneously, the precious metal material consumption is small, and the utility model not only can be used for the building of a new linear quenching boiler of an ethylene cracking device, but also can be suitable for the modification of the connecting piece of a linear quenching boiler in service.
Description
Technical field
The utility model relates to the equipment that is used for the cracking of ethylene technology, is specifically related to a kind of linear quenching boiler inlet web member and quenching boiler thereof.
Background technology
Pyrolyzer is the essential elements of ethylene unit.Cracking stock through behind the Pintsch process, enters quenching boiler and cools off fast in cracking furnace tube, prevents the generation of secondary reaction, reduces the alkene loss, simultaneously energy recovery is produced steam.Along with the development of ethane cracking furnace quenching boiler technology, in order further to shorten the quenching boiler adiabatic section residence time, to avoid splitting gas maldistribution problem, newly-built at present and transformation pyrolyzer adopts linear quenching boiler mostly with quenching boiler.
As everyone knows, linear quenching boiler is made up of inlet web member, two sleeve pipe heat exchange element, heat-eliminating medium header, high-temperature medium header, hydraulic decoking hole etc.Based on this, the structure formation of linear quenching boiler is as follows: each two sleeve pipe heat exchange element is made up of two concentric pipes, wherein interior pipe is walked the high temperature medium--the splitting gas about 800 ℃, annular space between outer tube and the interior pipe is walked heat-eliminating medium--the gas-vapor mix about 350 ℃, each two sleeve pipe heat exchange element is connected with a pyrolyzer outlet boiler tube by an inlet web member, a plurality of pairs of sleeve pipe heat exchange elements are arranged in parallel into single or double arrangement, link together by heat-eliminating medium header and high-temperature medium header, form a linear quenching boiler.The structure formation of the two sleeve pipe heat exchange elements of linear quenching boiler has determined and must be connected with pyrolyzer outlet boiler tube by the inlet web member.Inlet web member normally following structure: the one end is that the single-wall tubelike structure is connected with pyrolyzer outlet boiler tube, the other end be concentric double walled tubular structure respectively with the interior pipe and the outer pipe coupling of heat exchange element, formed a kind of " fork-shaped " structure.In operational process, Pintsch process gas can form bigger temperature stress at inlet web member place, simultaneously in the junction of inlet web member and heat exchange element because tube wall temperature different produce differential expansion, formation demi-inflation thermal stresses.Behind the long-play, these thermal stresses can damage the junction.The inlet web member of patent ZL01265254.7 portion has within it adopted heat insulation module, refractory alloy ring flat-plate and ceramic fiber to avoid the problems referred to above.But the shortcoming that adopts the inlet web member of inner stuffed heat insulated module is this structure relative complex, maintenance cost costliness behind the long-play.The length of web member of entering the mouth simultaneously must be longer relatively, and the temperature stress that inlet web member place is formed reduces, and the heat insulation module of holding sufficient amount simultaneously makes the junction of inlet web member and heat exchange element away from high-temperature area.Because the material of inlet web member is high temperature resistant nickel-chromium-ferro alloy, the lengthening of length can further increase cost, can increase the residence time of splitting gas at the quenching boiler entrance simultaneously, influences the yield of purpose product.
The utility model content
The purpose of this utility model provides the linear quenching boiler inlet web member that a kind of structure is more simple, address the above problem.
The utility model provides a kind of linear quenching boiler inlet web member, one end of inlet web member links to each other with pyrolyzer outlet boiler tube 1, the other end links to each other with two sleeve pipe heat exchange elements 2, it is characterized in that linear quenching boiler inlet web member is made up of inlet tube 3 and web member 4, inlet tube 3 is a single-walled pipe, one end docks welding with pyrolyzer outlet boiler tube 1, the bottom welding of the other end and web member 4; Web member is the double walled tubular structure, and the diameter of inner pipe of web member is complementary with the interior pipe 5 of two sleeve pipe heat exchange elements 2, and pipe 6 outwards overturns and forms outer tube 7 in the bottom of web member, and the bottom is circular-arc; Form cavity between the interior pipe 6 of web member and outer tube 7, take over the passage of 8 heat-eliminating mediums of introducing as oiler feed, the interior pipe 6 and the outer tube 7 on web member top join with the interior pipe 5 of two sleeve pipe heat exchange elements, the outer tube 9 of two sleeve pipe heat exchange elements respectively.
The bottom of the utility model web member 4 be necessary for that circular-arc, circular-arc structure can absorb well since between the outer tube 9 of the interior pipe 5 of two sleeve pipe heat exchange elements and two sleeve pipe heat exchange elements because the different formed swelling heat stress of tube wall temperature.Arc structure can also reduce the wall thickness that connects 4 bottoms effectively, makes the wall thickness of its wall thickness and the interior pipe 5 of two sleeve pipe heat exchange elements 2 on an order of magnitude, generally between 10mm to 15mm.
The interior pipe 6 of web member 4 preferably is higher than outer tube 7 in the linear quenching boiler inlet of the utility model web member.
The cavity bottom that forms between the interior pipe 6 of web member 4 and the outer tube 7 in the linear quenching boiler inlet of the utility model web member preferably is provided with blowdown lancing door 10.
Be welded with oiler feed on the outer tube 7 of web member 4 in the linear quenching boiler inlet of the utility model web member and take over 8, can certainly on the outer tube 9 of two sleeve pipe heat exchange elements, be welded with oiler feed and take over 8 to introduce heat-eliminating medium.
In the linear quenching boiler inlet of the utility model web member, the channel position of taking over 8 corresponding heat-eliminating mediums with oiler feed is provided with baffling sleeve 11, baffling cover tube bottom does not contact with the bottom of web member 4, gapped, make the cooling medium pass of formation between the outer tube 9 of interior pipe 5 that the bottom that flows to web member 4 behind the heat-eliminating medium admission passage earlier is folded to two sleeve pipe heat exchange elements again and two sleeve pipe heat exchange elements.
The utility model further proposes, and the butt joint welding of the interior pipe 6 of web member and the interior pipe 5 of two sleeve pipe heat exchange elements can be adopted the deep hole weldering.
The utility model further proposes, and the material of web member 4 recommends to select the high chrome molybdenum alloy material, and the material of inlet tube 3 recommends to select the Langaloy material.Inlet tube 3 can adopt the nickel-base welding rod welding with the weld seam of web member 4 bottoms simultaneously.
A kind of linear quenching boiler inlet web member that adopts the utility model to provide, it is simple in structure, and the splitting gas residence time is short.The tube wall temperature of web member is low, need not heat insulation module and just can avoid bearing bigger thermal stresses, viscous deformation and creep.Consumption of materials is few simultaneously, saves the space, and overall cost is low.Another characteristics are to adopt linear quenching boiler inlet web member of the present utility model both to can be used for the linear quenching boiler of newly-built ethylene cracker, again applicable to the transformation of the linear quenching boiler inlet web member that comes into operation in labour.
The utility model also provides a kind of quenching boiler that uses this linearity quenching boiler inlet web member, mainly form by inlet web member, two sleeve pipe heat exchange element, heat-eliminating medium header, high-temperature medium header, hydraulic decoking hole, it is characterized in that a plurality of inlet web members are arranged in parallel by 13 parallel connections of heat-eliminating medium header, promptly arrange row's oiler feed and take over 8 in heat-eliminating medium header 13 upper edge axial order, each oiler feed is taken over 8 and is connected with the inlet web member or with two sleeve pipe heat exchange elements 2 respectively, forms a linear quenching boiler module.
It is short that quenching boiler of the present utility model has the splitting gas residence time, need not mechanical decoking, and consumption of materials is few, saves the space, and overall cost is low, the characteristics that the life-span is long.
Description of drawings
Fig. 1 is the longitudinal cross-section structural representation of inlet web member of the present utility model.
Fig. 2 is the A-A sectional top view of Fig. 1.
Among the figure: 1-pyrolyzer outlet boiler tube, the two sleeve pipe heat exchange elements of 2-, 3-inlet tube, the 4-web member, the interior pipe of the two sleeve pipe heat exchange elements of 5-, pipe in the 6-, 7-outer tube, the 8-oiler feed is taken over, the outer tube of the two sleeve pipe heat exchange elements of 9-, 10-blowdown lancing door, 11-baffling sleeve, the 12-reference column, 13-heat-eliminating medium header.
Embodiment
Accompanying drawing 1 is to use a kind of linear quenching boiler inlet web member of the present utility model, only is a kind of form of the present utility model, and the utility model is not limited in this.
Consult Fig. 1, an end of inlet tube 3 and the 1 butt joint welding of pyrolyzer outlet boiler tube, the bottom welding of the other end and web member 4.Pintsch process gas enters linear quenching boiler from pyrolyzer outlet boiler tube.
As can be seen from Figure 1, web member 4 is the double walled tubular structure, the interior pipe 5 butt joint welding of pipe 6 and two sleeve pipe heat exchange elements in it, the outer tube 9 butt joint welding of outer tube 7 and two sleeve pipe heat exchange elements.Pipe 6 outwards overturns and forms outer tube 7 in the bottom of web member 4, forms a similar W shape enclosed construction in the bottom of web member 4.Annular space between the interior pipe 5 of the interior pipe 6 of web member 4 and the annular space between the outer tube 7 and two sleeve pipe heat exchange elements and the outer tube 9 of two sleeve pipe heat exchange elements is formed the flow passage of heat-eliminating medium jointly.Through discovering, adopt inlet web member of the present utility model, the tube wall temperature of its web member 4 remains on the lower level (even inlet splitting gas temperature is above 800 ℃, its wall temperature is no more than 500 ℃), need not heat insulation module and just can avoid bearing bigger thermal stresses, viscous deformation and creep.Pipe 6 outwards overturns when forming outer tube 7 in the bottom of web member 4 simultaneously, the bottom is preferably formed as circular-arc, similar W shape enclosed construction can absorb well since between the outer tube 9 of the interior pipe 5 of two sleeve pipe heat exchange elements and two sleeve pipe heat exchange elements because the different formed swelling heat stress of tube wall temperature.Arc structure can also reduce the wall thickness of web member 4 bottoms effectively, makes the wall thickness of its wall thickness and the interior pipe 5 of two sleeve pipe heat exchange elements 2 on an order of magnitude, generally between 10mm to 15mm.The interior pipe 6 of web member 4 and outer tube 7 can be regulated as required apart from the axial length of web member 4 bottoms, and the interior pipe 6 of web member 4 preferably is higher than outer tube 7 simultaneously.
One face down bonding of web member 4 has oiler feed to take over 8 to introduce heat-eliminating medium, in the time of simultaneously in heat-eliminating medium is introduced the interior pipe 6 of web member 4 and the annular space between the outer tube 7, is provided with baffling sleeve 11 in the inlet vicinity.Heat-eliminating medium flows to earlier the bottom of web member 4 downwards after 8 introducings are taken in oiler feed, the baffling sleeve 11 of upwards flowing through again then enters the cooling medium pass that two sleeve pipe heat exchange elements 2 form.Baffling sleeve 11 is one columnar structured, the centre of the common cooling medium pass that forms of annular space between the outer tube 9 of the interior pipe 5 of the interior pipe 6 of web member 4 and the annular space between the outer tube 7 and two sleeve pipe heat exchange elements and two sleeve pipe heat exchange elements, be fixed on by flanging away from an end of web member 4 bottoms on the reference column 12 between the outer tube 9 of the interior pipe 5 of two sleeve pipe heat exchange elements and two sleeve pipe heat exchange elements, the other end of baffling sleeve 11 leaves certain clearance to guarantee flowing of heat-eliminating medium near the bottom of web member 4 between the two.
Lowest part in the internal clearance of web member 4 opposite sides also is provided with blowdown lancing door 10.Can play the blowdown effect that is interrupted on the one hand, during online on the other hand impatient cold boiler parking maintenance, available corresponding tool carries out mechanical removal by the impurity that the blowdown lancing door will be deposited on web member 4 bottoms, and the cooling space of linear quenching boiler is in clean conditions when putting into operation once more with the linear quenching boiler that guarantees to have the utility model structure.
As shown in Figure 1, the interior pipe 6 of web member 4, outer tube 7 adopt with the outer tube 9 of the interior pipe 5 of two sleeve pipe heat exchange elements, two sleeve pipe heat exchange elements and dock welding, and wherein the interior pipe 6 of web member 4 adopts the deep hole weldering with the welding of docking of the interior pipe 5 of two sleeve pipe heat exchange elements.The material of web member 4 can be selected the high chrome molybdenum alloy material for use, and the material of inlet tube 3 can be selected the Langaloy material for use, and inlet tube 3 can adopt the nickel-base welding rod welding with the weld seam of web member 4 bottoms.
As shown in Figure 2, a plurality of web members 4 are arranged in parallel, and are connected in parallel by heat-eliminating medium header 13 and form a linear quenching boiler module.
Claims (11)
1. linear quenching boiler inlet web member, one end of inlet web member links to each other with pyrolyzer outlet boiler tube (1), the other end links to each other with two sleeve pipe heat exchange elements (2), it is characterized in that linear quenching boiler inlet web member is made up of inlet tube (3) and web member (4), inlet tube (3) is a single-walled pipe, one end docks welding with pyrolyzer outlet boiler tube (1), the bottom welding of the other end and web member (4); Web member is the double walled tubular structure, and the diameter of inner pipe of web member is complementary with the interior pipe (5) of two sleeve pipe heat exchange elements, and pipe (6) outwards overturns and forms outer tube (7) in the bottom of web member, and the bottom is circular-arc; Between the interior pipe (6) of web member and outer tube (7), form cavity, take over the passage of the heat-eliminating medium of (8) introducing as oiler feed, the interior pipe (6) on web member top and outer tube (7) join with the outer tube (9) of the interior pipe (5) of two sleeve pipe heat exchange elements, two sleeve pipe heat exchange elements respectively.
2. linear quenching boiler inlet web member according to claim 1 is characterized in that the interior pipe (6) of web member (4) in the quenching boiler inlet web member is higher than outer tube (7).
3. the cavity bottom of formation is provided with blowdown lancing door (10) between the linear quenching boiler inlet web member according to claim 1, the interior pipe (6) that it is characterized in that web member (4) in the linear quenching boiler inlet web member and outer tube (7).
4. linear quenching boiler inlet web member according to claim 1 is characterized in that being welded with oiler feed on the outer tube (7) of web member (4) in the linear quenching boiler inlet web member takes over (8) to introduce heat-eliminating medium.
5. linear quenching boiler inlet web member according to claim 1, it is characterized in that in the quenching boiler inlet web member, the channel position of taking over corresponding heat-eliminating medium with oiler feed is provided with baffling sleeve (11), baffling cover tube bottom does not contact with the bottom of web member (4), gapped, make the cooling medium pass of formation between the outer tube (9) of interior pipe (5) that the bottom that flows to web member (4) behind the heat-eliminating medium admission passage earlier is folded to two sleeve pipe heat exchange elements again and two sleeve pipe heat exchange elements.
6. linear quenching boiler inlet web member according to claim 1, the wall thickness of wall thickness and the interior pipe (5) of two sleeve pipe heat exchange elements of bottom that it is characterized in that web member (4) is on an order of magnitude.
7. linear quenching boiler inlet web member according to claim 6, the wall thickness that it is characterized in that the bottom of web member (4) is 10mm～15mm.
8. linear quenching boiler inlet web member according to claim 1 is characterized in that the interior pipe (6) of web member (4) adopts the deep hole weldering with the welding of docking of the interior pipe (5) of two sleeve pipe heat exchange elements.
9. linear quenching boiler inlet web member according to claim 1, the material that it is characterized in that web member (4) is the high chrome molybdenum alloy material, the material of inlet tube (3) is the Langaloy material.
10. linear quenching boiler inlet web member according to claim 1 is characterized in that the inlet tube (3) and the weld seam of the bottom of web member (4) adopt the nickel-base welding rod welding.
11. linear quenching boiler inlet web member according to claim 1, it is characterized in that a plurality of inlet web members are arranged in parallel by heat-eliminating medium header (13) parallel connection, promptly arrange row's oiler feed and take over (8) in heat-eliminating medium header (13) upper edge axial order, each oiler feed is taken over (8) and is connected with inlet web member or two sleeve pipe heat exchange element (2) respectively, forms a linear quenching boiler module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200324006U CN201068434Y (en) | 2007-07-19 | 2007-07-19 | Linear quenching boiler inlet connecting element and quenching boiler thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200324006U CN201068434Y (en) | 2007-07-19 | 2007-07-19 | Linear quenching boiler inlet connecting element and quenching boiler thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068434Y true CN201068434Y (en) | 2008-06-04 |
Family
ID=39489810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200324006U Expired - Lifetime CN201068434Y (en) | 2007-07-19 | 2007-07-19 | Linear quenching boiler inlet connecting element and quenching boiler thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068434Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975527A (en) * | 2010-10-21 | 2011-02-16 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN112005071A (en) * | 2018-04-24 | 2020-11-27 | G·玛南蒂 | Double-tube heat exchanger and method for manufacturing same |
-
2007
- 2007-07-19 CN CNU2007200324006U patent/CN201068434Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975527A (en) * | 2010-10-21 | 2011-02-16 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN101975527B (en) * | 2010-10-21 | 2012-07-25 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN112005071A (en) * | 2018-04-24 | 2020-11-27 | G·玛南蒂 | Double-tube heat exchanger and method for manufacturing same |
| CN112005071B (en) * | 2018-04-24 | 2022-08-02 | G·玛南蒂 | Double-tube heat exchanger and method for manufacturing same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975527B (en) | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof | |
| CN107860022B (en) | Variable flue section tubular air preheater | |
| JP6357706B2 (en) | Heat exchanger | |
| CN101644369A (en) | A connector for connecting between a reaction pipe and a cooling pipe as well as a method for connecting a reaction pipe to a cooling pipe | |
| CN201068434Y (en) | Linear quenching boiler inlet connecting element and quenching boiler thereof | |
| WO2013139172A1 (en) | Heat exchanger | |
| CN111059565A (en) | High-temperature air preheater for coal gas | |
| CN201068433Y (en) | Quenching boiler | |
| US8701748B2 (en) | Outlet fitting for double pipe quench exchanger | |
| CN201852516U (en) | Inlet connector of linear rapid cooling heat exchanger and rapid cooling heat exchanger | |
| CN205137398U (en) | Synthetic gas waste heat boiler | |
| JP2000065487A (en) | Heat exchanger used for cooling process gas of high temperature | |
| CN213984691U (en) | Heat exchange tube set for linear rapid cooling heat exchanger | |
| CN110207508A (en) | A kind of heat exchanger | |
| EP2452145B1 (en) | Heat exchanger | |
| CN107285277B (en) | Device and method for preparing synthesis gas by hydrocarbon steam conversion | |
| CN112944956A (en) | U-shaped tubular heat exchanger with high-temperature and high-pressure tube pass structure | |
| CN201442923U (en) | Multi-heat-pipe conical rotary oil refining cauldron for waste plastics and waste rubber | |
| CN210716507U (en) | High-temperature expansion joint with labyrinth type flow guide structure | |
| CN211451963U (en) | Novel rapid cooling heat exchanger | |
| CN107796012A (en) | A kind of heat exchanger of improvement | |
| CN211084895U (en) | Spiral coil type ascending pipe heat exchanger | |
| CN2498159Y (en) | Linear shape cooling boiler | |
| CN202499850U (en) | Novel water cooled wall for gasification furnace | |
| CN215725207U (en) | Tail gas sleeve structure and reduction furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: Tianhua Institute of Chemical Machinery & Automation Co., Ltd. Address before: 100029 Beijing City, Chaoyang District Hui Street No. 6 Patentee before: Sinopec Corp. Patentee before: Tianhua Chemical Machinery & Automation Research Inst. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |