CN203095988U - Radiation-section furnace pipe system for reforming furnace - Google Patents
Radiation-section furnace pipe system for reforming furnace Download PDFInfo
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- CN203095988U CN203095988U CN 201320018020 CN201320018020U CN203095988U CN 203095988 U CN203095988 U CN 203095988U CN 201320018020 CN201320018020 CN 201320018020 CN 201320018020 U CN201320018020 U CN 201320018020U CN 203095988 U CN203095988 U CN 203095988U
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- 238000002407 reforming Methods 0.000 title abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 97
- 210000005239 tubule Anatomy 0.000 claims description 45
- 239000000956 alloy Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000008642 heat stress Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 15
- 230000005855 radiation Effects 0.000 description 12
- 238000013461 design Methods 0.000 description 11
- 230000008646 thermal stress Effects 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 230000035882 stress Effects 0.000 description 10
- 238000000629 steam reforming Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 230000001066 destructive effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a radiation-section furnace pipe system for a reforming furnace. The radiation-section furnace pipe system comprises a group of inlet collecting pipes, a plurality of upper pigtail pipes, a plurality of reforming pipes, a plurality of lower pigtail pipes and a cold-wall collecting pipe, wherein each inlet collecting pipe is communicated with one end of each upper pigtail pipe; the other end of each upper pigtail pipe is communicated with one end of one lower pigtail pipe by one reforming pipe; and the other ends of the plurality of lower pigtail pipes are respectively communicated on the cold-wall collecting pipe. The radiation-section furnace pipe system provided by the utility model has the advantages that heat stress generated by the radiation-section furnace pipe system due to high-temperature heat expansion can be borne, and is reduced; under the condition without influencing the free expansion of the reforming pipes, the optimal effects of sealing and insulation are achieved, and the loss of a hearth is furthest reduced; under the same scale of the device, the reforming pipe can be as long as possible, and the quantity of the reforming pipes is reduced, the size of the hearth is reduced, and the temperature of the metal walls of the reforming pipes is lower, so that the consumption of high-alloy materials is reduced and the service life of the furnace pipe system is prolonged.
Description
Technical field
The utility model relates to a kind of converter equipment, particularly a kind of converter radiant section furnace guard system.
Background technology
The hydrocarbon steam conversion stove is one of very crucial equipment of petrochemical unit, comprising: one section steam reforming stove in the synthetic ammonia installation, the steam reforming stove of methanol device, the steam reforming stove of refinery device for producing hydrogen etc.The steam reforming stove of domestic existing large-scale synthetic ammonia installation, device for producing hydrogen is the foreign patent technology that adopts, and buys relevant patent grant, needs a large amount of foreign exchanges of cost.International at present existing main synthetic ammonia patented technology all has distinctive feature separately on the structure formation of one section steam reforming stove, that is to say, various patented technologies are all on the basis of Technology separately, form the steam reforming type of furnace of oneself, evaded, be different from the patent type of furnace of other families, its main core is the structure of radiation section conversion tube and the difference on the supporting form.Converter radiant section furnace guard system is because of its operational condition harshness (High Temperature High Pressure, boiler tube system stress complexity), to the material requirements height, particularly big, manufacturing inspection of high alloy material consumption and on-the-spot installation requirement strictness, design difficulty are big, and the radiant section furnace guard system is the most critical parts of converter.
Technical scheme to prior art is illustrated below:
1, the prior art scheme one: harp pipe row type converter.Conversion tube is that upper springs is hung support; Be connected by flexible last pigtail between conversion tube and the inlet manifold; Every row's conversion tube and the collecting tubule in stove directly weld, and promptly do not have down pigtail pipe; Finish the reforming gas of conversion reaction in every row's conversion tube, after gathering by collecting tubule, enter and be located at collecting tubule middle part upcast, upcast outlet be located at furnace roof top have water jacket, horizontal gas transmission main links to each other, be that gas transmission main has gathered the reforming gas from upcast, finally enter secondary reformer, finish further conversion reaction by gas transmission main.
The advantage of harp pipe row type converter is: whole harp pipe row upper support, free expansion downwards, thermal expansion along pipe row direction collecting tubule, will flexibly connecting by conversion tube upper entrance pigtail, and the guide frame at furnace roof position absorbs preferably, in addition, reforming gas is through being located at upcast in the stove top that arrived furnace roof, realized that gas transmission main directly directly docks with the secondary reformer adapter, avoided the differential expansion between boiler tube system and the secondary reformer housing to greatest extent, and the big problem of the temperature stress of the vertical direction that causes, it is more reasonable that whole boiler tube system stress is distributed, and also obviously reduced the external loads at secondary reformer reforming gas inlet mouth of pipe place; This type of furnace is cold bottom structure, and promptly conversion tube does not need to pass furnace bottom, reduces because conversion tube passes the calorific loss of furnace bottom; In addition, no down pigtail pipe, the consumption of having saved high alloy material has reduced facility investment; Harp pipe row can divide into groups prefabricated in the workshop, conversion tube site welding workload minimum.
Yet its shortcoming is: conversion tube directly links to each other with collecting tubule, in case certain conversion tube damages, has only blowing out, change conversion tube, finish the site welding and the weld inspection of conversion tube and collecting tubule, inlet pigtail simultaneously, whole device is stopped for a long time, cause the certain economic loss.
In addition, owing to conversion tube, upcast directly link to each other with collecting tubule, upcast also links to each other with gas transmission main simultaneously, and there are about 30 ℃ temperature head in conversion tube and upcast, and conversion tube is long more, and both differential expansions are big more.So conversion tube is unsuitable long, otherwise will cause the differential expansion that produces owing to the temperature difference, the pair set pipe causes the disadvantageous effect of degree of disturbing increase, unbalance stress.Simultaneously, conversion tube is short more, and surface heat intensity raises, and the conversion tube wall temperature also can obviously raise.
2, the prior art scheme two: upper and lower pigtail and hot and cold set cast converter, conversion tube has adopted complete lower support structure.Last pigtail form and prior art scheme one are similar.Down pigtail pipe then links to each other with the hot wall collecting tubule, and the hot wall collecting tubule links to each other with cold wall collecting tubule again, enters secondary reformer after final reforming gas gathers by cold wall collecting tubule.
The major advantage of prior art scheme two is: adopt upper and lower pigtail structure.When a certain pyrolytic conversion pipe takes place to destroy owing to local overheating, under the condition that can stop the short period of time or not stop, take interim measures, with the dead upper and lower pigtail of clip, make medium can not pass through the conversion tube that damages, conversion tube does not need to split out, thereby reduces because parking maintenance (replacing conversion tube) causes unnecessary financial loss at once.In addition, conversion tube links to each other with the hot wall collecting tubule by down pigtail pipe, conversion tube is supported on furnace bottom, so down pigtail pipe is not influenced by the conversion tube expansible substantially, only need to absorb the thermal expansion of himself and hot wall collecting tubule, hot wall collecting tubule sectional is connected with cold wall collecting tubule, makes down pigtail pipe with the restriction of hot wall collecting tubule axial expansion within the specific limits.
Yet its shortcoming is: conversion tube is supported by the furnace bottom steel construction fully, because the gravitate conversion tube is stressed downwards, and thermal expansion upwards, thereby causes the conversion tube pressurized, add influences such as the circumferential non-uniform temperature of conversion tube, the conversion tube pressurized is easy to generate flexural deformation.In addition, this thaumatropy tube field welding engineering amount is big.
3, the prior art scheme three: conversion tube and cold collecting tubule direct attachment type formula.The last pigtail form and the scheme one of prior art scheme three are similar, conversion tube is supported for that upper springs is hung, lower support on cold wall collecting tubule, conversion tube upwards expands.
The major advantage of prior art scheme three is, since the mode that adopts upper and lower support to combine, conversion tube tension difficult deformation, and the thermal expansion of conversion tube is all absorbed by last pigtail; In addition, owing to do not have down pigtail pipe, hot collecting tubule, make bottom construction simple, hearth level needn't be too high, compact equipment, and the furnace bottom useful space is big, is convenient to patrol and examine.Pass the furnace bottom place at conversion tube and adopted the seal cartridge structure, reduced the furnace bottom heat lost by radiation.
Yet its shortcoming is: the thermal expansion of cold wall collecting tubule system is the both direction in a plane, being point of fixity near an end, and the expansion displacement amount maximum of the other end (far-end), the conversion tube that cause far-end, links to each other stressed the most complicated with cold wall collecting tubule.In addition, every conversion tube needs at the scene and cold wall collecting tubule assembly welding, because there is refractory materials inside, weld seam can't carry out 100%-RT to be checked, therefore, weldquality and lining construction quality all become the key of whole boiler tube system smooth running.In case go wrong, check and repair relative difficult.
In view of this, for solving the deficiency in the above-mentioned technology, the inventor is based on the research and development of association area, and constantly test and improvement of process, and then generation of the present utility model is arranged.
The utility model content
The purpose of this utility model is to provide a kind of converter radiant section furnace guard system, can bear the thermal stresses that the radiant section furnace guard system expand to produce because of elevated temperature heat and thermal stresses is reduced; Under the condition that does not influence conversion tube free expansion, reach sealing, heat insulation best effect, reduce the burner hearth thermosteresis to greatest extent; Under identical unit scale, conversion tube can be long as far as possible, thereby reduce the conversion tube radical, dwindle size of burner hearth, the consumption of the lower minimizing of conversion tube tube wall temperature high alloy material, prolong the work-ing life of boiler tube system.
For reaching above-mentioned purpose, the utility model provides a kind of converter radiant section furnace guard system, it comprises: one group of inlet manifold, many last pigtails, many conversion tubes, many down pigtail pipes and a cold wall collecting tubule, described inlet manifold is connected with many ends of going up pigtail, the every the other end of going up pigtail is connected with an end of a down pigtail pipe by a conversion tube, and the other end of many described down pigtail pipes all is communicated on the described cold wall collecting tubule.
Described converter radiant section furnace guard system, wherein, described inlet manifold is H shape, it has two parallel take-off pipes, and two be connected with the perpendicular pipe of described take-off pipe by one between the take-off pipe, and be connected with many ends of going up pigtails respectively by a plurality of bases on every described take-off pipe.
Described converter radiant section furnace guard system, wherein, many described conversion tubes are arranged side by side.
Described converter radiant section furnace guard system, wherein, the caliber of described conversion tube is 60～160mm.
Described converter radiant section furnace guard system, wherein, the tube pitch of per two conversion tubes is 1.1～2.0 with the external diameter of conversion tube ratio.
Described converter radiant section furnace guard system, wherein, the described caliber of going up pigtail and down pigtail pipe is 30～80mm.
Described converter radiant section furnace guard system, wherein, the base spacing that described inlet manifold is connected with last pigtail is less than the spacing between the two adjacent conversion tubes.
The beneficial effects of the utility model are: can bear the thermal stresses that the radiant section furnace guard system expands and produces because of elevated temperature heat, and structure design, material selection, support and guiding etc. by optimizing, thermal stresses is reduced; Conversion tube passes furnace roof, furnace bottom position and adopts special thermal-insulating sealing structure, under the condition that does not influence conversion tube free expansion, reaches sealing, heat insulation best effect, has reduced the burner hearth thermosteresis to greatest extent; Under identical unit scale, the designed conversion tube of the utility model can be long as far as possible, thereby reduced the conversion tube radical, dwindled size of burner hearth, the lower consumption that reduces high alloy material of conversion tube tube wall temperature, prolonged the work-ing life of boiler tube system; The upper and lower bonded of conversion tube supports pattern, has reduced the crooked deformation trend of radiation section conversion tube, farthest reduces boiler tube thrashing or destructive possibility; The site welding quantities is few, field welding be complete penetraction and fusion in welding to welding structure, postwelding can carry out 100%-RT to be checked, has guaranteed welding quality; Down pigtail pipe directly links to each other with cold wall collecting tubule, except that the weight load that is subjected to himself, in cut down output living primary stress and the thermal stresses effect, be subjected to the minimum that influences of other external load; Each root down pigtail pipe is that independent spring support hanging frame supports, and has guaranteed that its constraint load and displacement are in scope of design.
Description of drawings
Fig. 1 is the front view of converter of the present utility model with the radiant section furnace guard system;
Fig. 2 is the side-view of converter of the present utility model with the radiant section furnace guard system.
Description of reference numerals: 1-inlet manifold; The last pigtail of 2-; The 3-conversion tube; The 4-down pigtail pipe; The cold wall collecting tubule of 5-.
Embodiment
About the utility model is the application target that reaches above-mentioned and effect and the technique means that adopted, now enumerate preferable feasible embodiment, and shown in the conjunction with figs., details are as follows:
As depicted in figs. 1 and 2, be respectively front view and the side-view of converter of the present utility model with the radiant section furnace guard system.Converter of the present utility model radiant section furnace guard system mainly comprises: one group of inlet manifold 1, many last pigtails 2, many conversion tubes 3, many down pigtail pipes 4 and a cold wall collecting tubule 5.Described inlet manifold 1 is H shape, it has two parallel take-off pipes, and two be connected with the perpendicular pipe of described take-off pipe by one between the take-off pipe, and be connected with many ends of going up pigtail 2 respectively by a plurality of bases on the every described take-off pipe, the every the other end of going up pigtail 2 is connected with an end of a down pigtail pipe 4 by a conversion tube 3, and the other end of many described down pigtail pipes 4 all is communicated on the described cold wall collecting tubule 5.Many described conversion tubes 3 are arranged side by side along the radiation section length direction.Constituted described converter radiant section furnace guard system thus.
Described inlet manifold 1 is supported on the steel construction of converter top (radiation chamber top) by spring hanging, and down pigtail pipe supports (or suspension) in converter bottom (outside the radiation chamber space) by two groups of springs; Conversion tube is suspended on the furnace roof Steel Superstructure by spring hanger simultaneously, and the conversion tube bottom is supported on the furnace bottom steel construction by a casting Tapered Cup, and Tapered Cup is connected with down pigtail pipe; After the down pigtail pipe bending, be connected with cold wall collecting tubule from side direction, connecting portion has adopted local reinforcement, also portion is lined with lagging material within it; Down pigtail pipe and cold wall collecting tubule are positioned at converter furnace bottom bottom (outside the radiation chamber space).
The utility model adopts upper and lower pigtail structure, No way out hot wall collecting tubule, the direct structure that is connected with cold wall collecting tubule of down pigtail pipe.The base spacing that described inlet manifold is connected with last pigtail is less than the spacing between the two adjacent conversion tubes; Supporting structure is established in described conversion tube bottom, be that combined support, the expansible that makes progress support pattern up and down in the conversion tube employing, the shared cover constant-force spring hanger of per two conversion tubes, it bears conversion tube and internal activator, upward pigtail and external insulation etc. bears above-mentioned less some from heavy lift from heavy lift, bottom by fixed support; Described down pigtail pipe adopts every independent spring cupport structure; Described down pigtail pipe and cold wall collecting tubule adopt the side direction stiffener joints to welding structure; Described cold wall collecting tubule adopts double-layer inner lining, no high alloy bush structure, and the reinforced pipe that docks with down pigtail pipe adopts single-layer lining and high alloy bushing pipe bonded structure; Described conversion tube passes the furnace roof position and adopts inside and outside incubation chamber structure; Described conversion tube passes the furnace bottom position and adopts the flexible sealing nested structure.Cold wall collecting tubule is horizontally disposed along the radiation section axis direction, adopts supporting way fixing, that slide and combine.
The caliber of described conversion tube 3 is 60～160mm, and the described caliber of going up pigtail 3, down pigtail pipe 4 is 30～80mm, and the tube pitch of per two conversion tubes is 1.1～2.0 with the external diameter of conversion tube ratio.
Preferably, per two blind roaster guard systems are one group, can arrange the such boiler tube system of many groups at radiation section according to arts demand (and considering structural limitations).
In sum, the utility model converter adopts up and down with radiant section furnace guard system transfer pipe, and combined support, the expansible that makes progress support pattern, its advantage is that the thermal expansion of boiler tube system is absorbed by temperature low relatively last pigtail and inlet manifold, reduced because the thermal stresses that elevated temperature heat expands and produces has reduced conversion tube to the full extent and lost efficacy or the destructive possibility.In addition, because of the setting of the unequal-interval of inlet manifold base (be connected with last pigtail with) and last pigtail and inlet manifold base spacing less than last pigtail tube spacing, guaranteed under the worst hot case of driving and normal running, last pigtail horizontal direction does not have additional stress, has reduced last pigtail itself, goes up pigtail and inlet manifold and has gone up joint destructive possibility between pigtail and conversion tube.
In addition, down pigtail pipe is directly strengthened docking with cold wall collecting tubule side direction, save the high condensation material of hot wall collecting tubule, save facility investment, simultaneously because down pigtail pipe adopts independent spring-supported structure, stressed simple more (notes: the thermal stresses that it is born membrane stress, a self gravitation and expands and produce), and avoided the down pigtail pipe destructive possibility that causes behind the single spring failure.
Cold wall collecting tubule is responsible for and is adopted the dual-layer lining structure, tube wall temperature is reduced in the scope of standard permission, reduced the thermal stresses that elevated temperature heat expands and produces, in addition, the refractory castable novel high-strength mould material that contacts with high-temperature medium, saved the high alloy lining, simplified construction, saved investment.The reinforced pipe that docks with down pigtail pipe adopts lining and high alloy bushing pipe bonded structure, has at utmost reduced the influence of high-temperature flue gas to lining.
Converter adopts even rows to arrange with the radiant section furnace guard system, per two grate furnace guard systems connect two symmetrically arranged inlet manifolds respectively, a but shared cold wall collecting tubule, the lateral thrust that the down pigtail pipe that is balance produces cold wall collecting tubule because of expanded by heating, avoided one-sided high-temperature flue gas washing away again to cold wall collecting tubule inside liner, improve the operating environment of cold wall collecting tubule, played the effect that increases the service life.
Telescoping incubation chamber structure and conversion tube that conversion tube passes furnace roof pass furnace bottom flexible sealing nested structure, have reduced to greatest extent owing to negative pressure in the burner hearth, and the outer freezing air of stove is inhaled into the possibility that causes furnace thermal efficiency to reduce.Reduced simultaneously the influence that furnace roof or furnace bottom are subjected to hyperthermia radiation to greatest extent, the envrionment temperature around having reduced has obviously been improved operating environment.
The utility model obviously is different from the various patented technologies of the radiation section conversion tube structure of existing steam reforming stove, be a kind of novel steam reforming stove boiler tube system (comprise conversion tube structure with support, be connected pattern etc.), realized that converter radiant coil system stress is evenly distributed, guarantees that the converter designing technique is reliable, operation is stable, the consumption of minimizing high alloy material, reduces calorific loss.In design process, to the supporting form of material selection, structure and the conversion tube of boiler tube system, the insulation and the heat insulation optimization design of having carried out of conversion tube, and adopt international advanced engineering application software-flowsheeting software (PRO-II) to carry out processing simulation calculating; Use international converter software for calculation (REFORMER-3) and direct flame heating furnace analog calculation software (FRNC-5), carried out conversion reaction, burning, heat transfer analog calculation; Use international standard (API530, ANSIB31.3) and international stress distribution software for calculation (CAESAR II, ANSYS) intensity of boiler tube system is carried out design calculation.
The utility model has been successfully applied to the fertilizer plant of two cover 325 tons of synthetic ammonia of daily output and 500 tons of urea.Device is driven smoothly in November, 2010, and in January, 2011 device reach 100% the design meet, the every technical indicator of primary reformer meets design requirement fully, equipment operates steadily, normally, radiant coil system architecture and material design meet expected design, can adapt to various drivings and operation operating mode.
It is the one-stage converter of the synthetic ammonia installation of raw material that the utility model not only can be applied in the Sweet natural gas, and also can be applicable to the Sweet natural gas is steam reforming stove in the devices such as methyl alcohol, hydrogen manufacturing of raw material.
The utility model provides a kind of novel texture converter radiant section furnace guard system, the requirement of temperature, pressure and conversion reaction under satisfying various operation operating modes, also can bear the thermal stresses that the radiant section furnace guard system expands and produces because of elevated temperature heat, and structure design, material selection, support and guiding etc. by optimizing, thermal stresses is reduced; Conversion tube passes furnace roof, furnace bottom position and adopts special thermal-insulating sealing structure, under the condition that does not influence conversion tube free expansion, reaches sealing, heat insulation best effect, has reduced the burner hearth thermosteresis to greatest extent; Under identical unit scale, the designed conversion tube of the utility model can be long as far as possible, thereby reduced the conversion tube radical, dwindled size of burner hearth, the lower consumption that reduces high alloy material of conversion tube tube wall temperature, prolonged the work-ing life of boiler tube system; The upper and lower bonded of conversion tube supports pattern, has reduced the crooked deformation trend of radiation section conversion tube, farthest reduces boiler tube thrashing or destructive possibility; More existing the third scheme of site welding quantities is few, field welding be complete penetraction and fusion in welding to welding structure, postwelding can carry out 100%-RT to be checked, has guaranteed welding quality; Down pigtail pipe directly links to each other with cold wall collecting tubule, except that the weight load that is subjected to himself, in cut down output living primary stress and the thermal stresses effect, be subjected to the minimum that influences of other external load; Each root down pigtail pipe is that independent spring support hanging frame supports, and has guaranteed that its constraint load and displacement are in scope of design.
More than be illustrative to description of the present utility model; and it is nonrestrictive; those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall in the protection domain of the present utility model all.
Claims (7)
1. converter radiant section furnace guard system, it is characterized in that, comprise: one group of inlet manifold, many last pigtails, many conversion tubes, many down pigtail pipes and a cold wall collecting tubule, described inlet manifold is connected with many ends of going up pigtail, the every the other end of going up pigtail is connected with an end of a down pigtail pipe by a conversion tube, and the other end of many described down pigtail pipes all is communicated on the described cold wall collecting tubule.
2. converter radiant section furnace guard system according to claim 1, it is characterized in that, described inlet manifold is H shape, it has two parallel take-off pipes, and two be connected with the perpendicular pipe of described take-off pipe by one between the take-off pipe, and be connected with many ends of going up pigtails respectively by a plurality of bases on every described take-off pipe.
3. converter radiant section furnace guard system according to claim 1 is characterized in that many described conversion tubes are arranged side by side.
4. converter radiant section furnace guard system according to claim 1 is characterized in that the caliber of described conversion tube is 60～160mm.
5. converter radiant section furnace guard system according to claim 1 is characterized in that, the tube pitch of per two conversion tubes is 1.1～2.0 with the external diameter of conversion tube ratio.
6. converter radiant section furnace guard system according to claim 1 is characterized in that, the described caliber of going up pigtail and down pigtail pipe is 30～80mm.
7. converter radiant section furnace guard system according to claim 1 is characterized in that the base spacing that described inlet manifold is connected with last pigtail is less than the spacing between the two adjacent conversion tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018020 CN203095988U (en) | 2013-01-14 | 2013-01-14 | Radiation-section furnace pipe system for reforming furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018020 CN203095988U (en) | 2013-01-14 | 2013-01-14 | Radiation-section furnace pipe system for reforming furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203095988U true CN203095988U (en) | 2013-07-31 |
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ID=48847406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320018020 Expired - Fee Related CN203095988U (en) | 2013-01-14 | 2013-01-14 | Radiation-section furnace pipe system for reforming furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203095988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786666A (en) * | 2017-04-28 | 2018-11-13 | 中国石化工程建设有限公司 | Burn reburner in side |
-
2013
- 2013-01-14 CN CN 201320018020 patent/CN203095988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786666A (en) * | 2017-04-28 | 2018-11-13 | 中国石化工程建设有限公司 | Burn reburner in side |
| CN108786666B (en) * | 2017-04-28 | 2021-12-10 | 中国石化工程建设有限公司 | Side burning converter |
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Address after: Two road 100012 Beijing city Chaoyang District high tech Industrial Park, No. 1. Patentee after: China Global Engineering Co. Ltd. Address before: Two road 100012 Beijing city Chaoyang District, high-tech Industrial Park No. 1 E block 3 District Chuangda room 3117 Patentee before: China Huanqiu Engineering Co. |
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Granted publication date: 20130731 Termination date: 20210114 |