CN104860265A - Conversion tube system for harp type conversion furnace - Google Patents
Conversion tube system for harp type conversion furnace Download PDFInfo
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- CN104860265A CN104860265A CN201510303445.1A CN201510303445A CN104860265A CN 104860265 A CN104860265 A CN 104860265A CN 201510303445 A CN201510303445 A CN 201510303445A CN 104860265 A CN104860265 A CN 104860265A
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Abstract
The invention provides a conversion tube system for a harp type conversion furnace. The conversion tube system specifically comprises a fixing device, an upper gas-collecting tube, a pigtail tube, a conversion tube, a lower gas-collecting tube, a first constant-force spring module and a second constant-force spring module, wherein the fixing device is used for fixing a model; the upper gas-collecting tube and the pigtail tube are fixed on the fixing device through the first constant-force spring module; the upper gas-collecting tube is connected with the pigtail tube; the upper gas-collecting tube is used for leading and outputting gas to be converted to the pigtail tube; the conversion tube is fixed on the fixing device through the second constant force spring module; the conversion tube is connected with the pigtail tube and is used for performing conversion treatment on the gas to be converted outputted by the pigtail tube and outputting the converted gas; the lower gas-collecting tube is connected with the conversion tube and is used for collecting the converted gas; the weight of the conversion tube is shared by the lower gas-collecting tube and the fixing device through the second constant-force spring module. Therefore, the safe and stable operation of the whole device is ensured, the potential safety hazards are eliminated, the maintenance expense and the time are reduced, and the economic benefits of enterprises are increased.
Description
Technical field
Harp arrangement converter field involved in the present invention, espespecially a kind of harp arrangement converter conversion tube system.
Background technology
The domestic harp piping formula converter run in a large number at present, fastening portion's constant force spring load due to conversion tube selects bigger than normal, all arrange according to transform the vertical total load head of piping (boiler tube deadweight+catalyzer weight+medium weight) 100%, simultaneously due to transform piping hot time outlet manifold top and bottom there is the temperature difference (top is than bottom temp height about 70 ~ 80 DEG C), under the acting in conjunction of above two kinds of unfavorable factors, often there will be that cold wall type outlet manifold (band insulated lining) is hot upwards to arch upward, its inner heat insulation linings break down is caused even to come off, high-temperature gas (~ 860 DEG C) in effuser and effuser metal outer wall (15CrMo, design the heat-resisting upper limit 420 DEG C) directly contact, cause metal outer wall overtemperature, cause the operational safety hidden danger of whole converter.
There is the temperature difference in outlet manifold top and bottom, is the natural characteristics that harp arrangement transforms piping, is usually difficult to eliminate.
Summary of the invention
The object of the invention is to provide a kind of stable harp arrangement converter to transform piping, then needing to solve the problem of the hot arch of above-mentioned outlet manifold for reaching this object, giving current harp arrangement converter for this reason after the invention provides a kind of new harp arrangement converter conversion tube system reference analysis and transforming piping to instruct.
Harp arrangement converter conversion tube system provided by the present invention specifically comprises: stationary installation, upper effuser, pigtail, conversion tube, outlet manifold, the first constant force spring module and the second constant force spring module; Described stationary installation is used for fixing described model; Described upper effuser and described pigtail are fixed in described stationary installation by the first constant force spring module; Described upper effuser is connected with described pigtail, and described upper effuser is for importing gas to be transformed and exporting described pigtail to; Described conversion tube is fixed in described stationary installation by described second constant force spring module; Described conversion tube is connected with described pigtail, and the gas to be transformed for exporting described pigtail carries out conversion processing and export transforming rear gas; Described outlet manifold is connected with described conversion tube, for collecting the gas after described conversion; Described conversion tube weight is shared by the second constant force spring module by described outlet manifold and described stationary installation.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described conversion tube comprises a plurality of reformer tube, and described second constant force spring module comprises a plurality of second constant force spring; Two described reformer tubes hung by each described second constant force spring.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described model also comprises lower gas gathering manifold, and described lower gas gathering manifold is used for the gas after the described conversion of being collected by described outlet manifold derives.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described outlet manifold is also provided with fixed support, described fixed support is used for fixing described conversion tube.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described outlet manifold is also provided with a plurality of guiding sliding support.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, 60% to 70% of described conversion tube weight is born by the second constant force spring module by described stationary installation, and described conversion tube residuals weight is born by described outlet manifold.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described conversion tube weight package weighs and medium weight containing conversion tube deadweight, catalyzer.
In above-mentioned harp arrangement converter conversion tube system, preferably also comprise, described first constant force spring and described second constant force spring comprise: anchor, main spring, a plurality of auxiliary spring, sliding cutter and roller bearing; One end of described a plurality of auxiliary spring is fixedly installed on two side relative in described anchor respectively; Described sliding cutter is connected with the other end of described auxiliary spring; Described main spring one end is connected with described sliding cutter by described roller bearing, and the other end of described main spring is connected with load on spring.
Advantageous Effects of the present invention is: in the present invention, the load of conversion tube top constant force spring is carried out design selection according to 60% ~ 70% of the vertical total load head of converter piping, the load of remaining 30 ~ 40% distributes to outlet manifold, a downward external loads is applied to outlet manifold, effectively inhibit the hot arch trend of outlet manifold, reduce outlet manifold inside liner to ftracture the possibility even come off, thus avoid high-temperature gas and directly contact with outlet manifold outer wall, finally can avoid effuser outer wall overtemperature, also ensure that the safety and steady of whole device runs, eliminate safe hidden trouble, reduce maintenance cost and time, increase the aspect such as Business Economic Benefit and all there is very high practical value and application prospect widely.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is harp arrangement converter conversion tube system skeleton view provided by the present invention;
Fig. 2 is harp arrangement converter conversion tube system side view provided by the present invention;
Fig. 3 is the constant force spring figure cut-away view of harp arrangement converter conversion tube system provided by the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
Lighter hydrocarbons steam reformer is the nucleus equipment in the devices such as synthetic ammonia, methyl alcohol, hydrogen manufacturing, and lighter hydrocarbons steam reforming reaction carries out in converter, and the heat required for conversion reaction is provided by the burner being arranged on converter top.The form of converter is generally divided into tipburn stove and sidefired furnace, methyl alcohol domestic at present, device for producing hydrogen all adopt the form of tipburn stove mostly, and the converter of the harp arrangement conversion piping that the present invention relates to is the one of tipburn stove, transform piping in the application to be normally made up of upper effuser, pigtail, conversion tube, outlet manifold and lower gas gathering manifold, concrete structure is as follows:
Harp arrangement converter conversion tube system skeleton view provided by the present invention please refer to shown in Fig. 1 to Fig. 2, and described harp arrangement converter conversion tube system specifically comprises: stationary installation, upper effuser 1, pigtail 2, conversion tube 3, outlet manifold 4, first constant force spring module and the second constant force spring module 6; Described stationary installation is used for fixing described model; Described upper effuser 1 and described pigtail 2 are fixed in described stationary installation by the first constant force spring module; Described upper effuser 1 is connected with described pigtail 2, and described upper effuser 1 is for importing gas to be transformed and exporting described pigtail 2 to; Described conversion tube 3 is fixed in described stationary installation by described second constant force spring module 6; Described conversion tube 3 is connected with described pigtail 2, and the gas to be transformed for exporting described pigtail 2 carries out conversion processing and export transforming rear gas; Described outlet manifold 4 is connected with described conversion tube 3, for collecting the gas after described conversion; Described conversion tube 3 weight is shared by the second constant force spring module 6 with described stationary installation by described outlet manifold 4.
Due to the domestic converter run in a large number at present, the constant force spring load on conversion tube top designs by the vertical total load head of conversion piping 100%, simultaneously because outlet manifold top and bottom exist the intrinsic temperature difference, two kinds of unfavorable factors superpose mutually, under acting in conjunction, finally result in that outlet manifold is hot upwards to arch upward.For solving this problem, in harp arrangement converter conversion tube system provided by the invention, be stationary installation and outlet manifold shared by the distribution of weight of conversion tube 3, wherein stationary installation bears the weight of Partial Conversion pipe 3 by the second constant force spring module 6, residuals weight is born via outlet manifold 4, with this, when outlet manifold 4 is hot upwards supplied time, because there is applying portion reactive force (i.e. the moiety by weight of conversion tube 3) upper end to described outlet manifold 4, the power of this reactive force and the hot upper confession of outlet manifold 4 offsets, thus solve the problem of the hot arch of outlet manifold.
Wherein above-mentioned stationary installation can be a common upper steel framed structure, and this structure function is fixing above-mentioned harp arrangement converter conversion tube system, provides the anchorage force that described upper effuser 1 and pigtail 2 and conversion tube 3 and constant force spring 6 are certain; Simultaneously described stationary installation also can be the supporting structure of other strong materials composition, and the present invention is to this and exceed restriction.
Above-mentioned first constant force spring module is a plurality of constant force spring, and described upper effuser 1 is fixed in described stationary installation with described pigtail 2 by this first constant force spring module, makes stationary installation dynamic bear the weight of upper effuser 1 and pigtail 2 with this.
Conversion tube 3 described above can comprise a plurality of reformer tube in realistic model, specifically please refer to shown in Fig. 1, described reformer tube one end is connected with above-mentioned pigtail 2 respectively, gas to be transformed for being exported by pigtail 2 carries out conversion processing, and described second constant force spring module 6 comprises a plurality of second constant force spring; Wherein two described reformer tubes hung by each second constant force spring.With this, all reformer tube one end are all connected with described pigtail 2, the other end is connected with outlet manifold 4, and the gas to be transformed obtained from upper effuser 1 exports in reformer tube by pigtail 2, and reformer tube exports in outlet manifold 4 after this being write gas reforming to be transformed reaction.
Wherein said first constant force spring and described second constant force spring concrete structure, please refer to shown in Fig. 3, this spring is primarily of major-minor two springs and sliding cutter, roller bearing composition, and principle of work is the interaction based on the elastic force of spring and the composite force of two auxiliary springs.Wherein, described first constant force spring and described second constant force spring specifically comprise: anchor, main spring 302, a plurality of auxiliary spring 303, sliding cutter 304 and roller bearing 305; One end of described a plurality of auxiliary spring 303 is fixedly installed on two side relative in described anchor respectively; Described sliding cutter 304 is connected with the other end of described auxiliary spring 303; Described main spring 302 one end is connected with described sliding cutter 304 by described roller bearing 305, and the other end of described main spring 302 is connected with load on spring 306.In real work, be also provided with central load pipe 301, bear pipe 301 effectively protection main spring 302 and the junction of load on spring 306 by described central authorities, prevent unnecessary spring breaking down.
For gas after the conversion that collection reformer tube exports, harp arrangement converter conversion tube system provided by the invention is also provided with multiple outlet manifold 4, and the quantity of described multiple outlet manifold 4 has current conversion boiler tube quantity and sets, and does not limit at this.In this embodiment, each outlet manifold is also provided with fixed support, described fixed support is used for fixing described conversion tube.Described outlet manifold is also provided with a plurality of guiding sliding support, described guiding trestle, for limiting the radial displacement of outlet manifold, prevents the radial displacement of outlet manifold excessive, causes whole piping unstability.
In the above-described embodiments, harp arrangement converter conversion tube system provided by the invention also comprises lower gas gathering manifold, and described lower gas gathering manifold is used for the gas after the described conversion of being collected by described outlet manifold derives.
In the above-described embodiments, preferably also comprise, 60% to 70% of described conversion tube weight is born by the second constant force spring module by described stationary installation, and described conversion tube residuals weight is born by described outlet manifold.Arranged by the load that suitably have adjusted above-mentioned second constant force spring 6 with harp arrangement converter conversion tube system in this present invention, namely ratio adjustment is shared to the vertical total load head of whole conversion piping, born 60% ~ 70% of the vertical total load head of whole converter piping by the constant force spring being arranged on conversion tube top, the vertical total load head of remaining 30 ~ 40% is distributed to outlet manifold, a downward external loads is applied to outlet manifold, the hot trend that upwards arches upward of outlet manifold that the intrinsic temperature difference causes is existed for outlet manifold top and bottom, both interact, the hot arch of effective suppression.The vertical total load head of described conversion tube weight and whole converter piping comprises conversion tube deadweight, catalyzer weighs and medium weight.
In real work, harp arrangement converter conversion tube system provided by the invention, through stress model analytical calculation, and adjust constant force spring bear the ratio transforming piping vertical total load head, calculate under 60% and 70% total load head once with the check value of secondary stress, result following table:
| Constant force spring load | Primary stress check value | Secondary stress check value |
| Transform 60% of the vertical total load head of piping | 41.2％ | 27.1％ |
| Transform 70% of the vertical total load head of piping | 40.7％ | 27.1％ |
Analyzed by above-mentioned data calculated, according to the support allocation proportion of the vertical total load head of conversion piping in the present invention, converter piping whole model stress distribution result is good, and more optimizes relative to original design model.
The actual operating data of the device for producing hydrogen that the present invention comes into operation through domestic recent driving is collected and the running condition at scene is verified, the hot arch trend of converter outlet manifold is obviously improved, and whole converter system cloud gray model is safer, steady.Compared with prior art, in this technological invention, the load of conversion tube top constant force spring is carried out design selection according to 60% ~ 70% of the vertical total load head of converter piping, the load of remaining 30 ~ 40% distributes to outlet manifold, a downward external loads is applied to outlet manifold, effectively inhibit the hot arch trend of outlet manifold, reduce outlet manifold inside liner to ftracture the possibility even come off, thus avoid high-temperature gas and directly contact with outlet manifold outer wall, finally can avoid effuser outer wall overtemperature.Therefore this technological invention for ensureing that the safety and steady of whole device runs, eliminate safe hidden trouble, reduce maintenance cost and the aspect such as time, increase Business Economic Benefit all there is very high practical value and application prospect widely.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a harp arrangement converter conversion tube system, is characterized in that, described model comprises: stationary installation, upper effuser, pigtail, conversion tube, outlet manifold, the first constant force spring module and the second constant force spring module;
Described stationary installation is used for fixing described model;
Described upper effuser and described pigtail are fixed in described stationary installation by the first constant force spring module;
Described upper effuser is connected with described pigtail, and described upper effuser is for importing gas to be transformed and exporting described pigtail to;
Described conversion tube is fixed in described stationary installation by described second constant force spring module;
Described conversion tube is connected with described pigtail, and the gas to be transformed for exporting described pigtail carries out conversion processing and export transforming rear gas;
Described outlet manifold is connected with described conversion tube, for collecting the gas after described conversion;
Described conversion tube weight is shared by the second constant force spring module by described outlet manifold and described stationary installation.
2. harp arrangement converter conversion tube system according to claim 1, it is characterized in that, described conversion tube comprises a plurality of reformer tube, and described second constant force spring module comprises a plurality of second constant force spring; Two described reformer tubes hung by each described second constant force spring.
3. harp arrangement converter conversion tube system according to claim 1, it is characterized in that, described model also comprises lower gas gathering manifold, and described lower gas gathering manifold is used for the gas after the described conversion of being collected by described outlet manifold derives.
4. harp arrangement converter conversion tube system according to claim 1, is characterized in that, described outlet manifold is also provided with fixed support, and described fixed support is used for fixing described conversion tube.
5. harp arrangement converter conversion tube system according to claim 1, is characterized in that, described outlet manifold is also provided with a plurality of guiding sliding support.
6. harp arrangement converter conversion tube system according to claim 1, it is characterized in that, described conversion tube weight to be shared by the second constant force spring module by described outlet manifold and described stationary installation and being comprised: 60% to 70% of described conversion tube weight is born by the second constant force spring module by described stationary installation, and described conversion tube residuals weight is born by described outlet manifold.
7. harp arrangement converter conversion tube system according to claim 6, is characterized in that, described conversion tube weight package weighs and medium weight containing conversion tube deadweight, catalyzer.
8. harp arrangement converter conversion tube system according to claim 1, is characterized in that, described first constant force spring and described second constant force spring comprise: anchor, main spring, a plurality of auxiliary spring, sliding cutter and roller bearing; One end of described a plurality of auxiliary spring is fixedly installed on two side relative in described anchor respectively; Described sliding cutter is connected with the other end of described auxiliary spring; Described main spring one end is connected with described sliding cutter by described roller bearing, and the other end of described main spring is connected with load on spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510303445.1A CN104860265B (en) | 2015-06-05 | 2015-06-05 | Harp arrangement reburner converts guard system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510303445.1A CN104860265B (en) | 2015-06-05 | 2015-06-05 | Harp arrangement reburner converts guard system |
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| CN104860265A true CN104860265A (en) | 2015-08-26 |
| CN104860265B CN104860265B (en) | 2018-01-12 |
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| CN201510303445.1A Active CN104860265B (en) | 2015-06-05 | 2015-06-05 | Harp arrangement reburner converts guard system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562891A (en) * | 2016-03-05 | 2016-05-11 | 中化二建集团有限公司 | Construction method for remote removal and construction of furnace tube of natural gas steam reformer |
| CN113117630A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气股份有限公司 | Method for replacing reformer tube of chemical fertilizer synthesis reformer |
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| CN101481087A (en) * | 2009-01-21 | 2009-07-15 | 中国石油化工集团公司 | Method for eliminating harp type converting kiln lower gas collector heat distortion |
| CN103332651A (en) * | 2013-06-20 | 2013-10-02 | 中石化宁波工程有限公司 | Method for preventing harp-type converter lower gas collection branch tube from thermal deformation |
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2015
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| CN2073322U (en) * | 1990-06-26 | 1991-03-20 | 化工部西南化工研究院 | Tube still converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562891A (en) * | 2016-03-05 | 2016-05-11 | 中化二建集团有限公司 | Construction method for remote removal and construction of furnace tube of natural gas steam reformer |
| CN105562891B (en) * | 2016-03-05 | 2017-09-15 | 中化二建集团有限公司 | Tear down and build natural gas steam reformer boiler tube construction method in strange land |
| CN113117630A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气股份有限公司 | Method for replacing reformer tube of chemical fertilizer synthesis reformer |
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| CN104860265B (en) | 2018-01-12 |
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