CN204122092U - Thimble tube heat-exchanged reformer - Google Patents
Thimble tube heat-exchanged reformer Download PDFInfo
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- CN204122092U CN204122092U CN201420439167.3U CN201420439167U CN204122092U CN 204122092 U CN204122092 U CN 204122092U CN 201420439167 U CN201420439167 U CN 201420439167U CN 204122092 U CN204122092 U CN 204122092U
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- Prior art keywords
- inner sleeve
- outer tube
- millimeters
- discharge
- gas
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 19
- 239000003054 catalyst Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 28
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000002453 autothermal reforming Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Hydrogen, Water And Hydrids (AREA)
Abstract
The utility model provides a kind of thimble tube heat-exchanged reformer.The utility model thimble tube heat-exchanged reformer, comprising: inner sleeve, outer tube, discharge, tubular helical coil, bearing and fin; Wherein, outer tube to be enclosed within outside inner sleeve and to form annular space between outer tube and inner sleeve, tubular helical coil is arranged on the inwall of inner sleeve, fin is arranged on the outer wall of inner sleeve, bearing settlement is in the bottom of inner sleeve and outer tube, and discharge is arranged on the below of bearing and is communicated with inner sleeve; The side wall upper part of outer tube offers air inlet, and the lower sidewall of outer tube offers gas outlet, and the top of inner sleeve is 90 degree and bends and the sidewall passing outer tube.The utility model improves the methane conversion efficiency of heat-exchanged reformer.
Description
Technical field
The utility model relates to petrochemical technology, particularly relates to a kind of thimble tube heat-exchanged reformer.
Background technology
Auto-thermal reforming process is the energy-conservation advanced technologies of a kind of solar term, middle nineteen nineties in last century, China's chemical industry first successfully to be developed with hydro carbons gas as the Auto-thermal reforming process of 15000 tons of synthetic ammonia produced per year by raw material, facts have proved, this technique solar term Be very effective.The key equipment realizing Auto-thermal reforming process process is heat-exchanged reformer, and its major function adds water vapour exactly in hydrocarbon raw material gas, makes the methane in hydro carbons gas under the effect of catalyst, carries out conversion reaction, and this reaction is the endothermic reaction.No matter the heat-exchanged reformer used the earliest is domestic or external, is all to adopt tube shell type structure, belongs to pressure vessel category.
The patent No. is provide a kind of heat-exchanged reformer in the patent " heat-exchanged reformer " of 201120045196.8, do not belong to pressure vessel category, Successful utilization is in the factory of the synthetic ammonia being raw material with hydro carbons gas and methyl alcohol, achieves good economic benefit and social benefit.
But this heat exchanger type reforming furnace catalyst is contained in inner sleeve, high-temperature gas is all walk between pipe, and the high temperature two sections of gas between pipe are inevitably to air heat radiation outside pipe, when identical insulation thickness, the higher radiation loss of temperature is larger, is totally unfavorable to methane conversion in pipe.In addition, catalyst is contained in interior pipe, and the caliber of interior pipe again can not be too large, otherwise heat transfer radius is too large, beds central temperature rises not get on, methane conversion can reduce, so the loading amount of catalyst reduces because caliber is little, meet the loading amount of certain production scale catalyst, just must increase the quantity of conversion tube, increase investment, too increase product cost, reduce the economic benefit of enterprise.
Utility model content
The utility model provides a kind of thimble tube heat-exchanged reformer, to improve the methane conversion efficiency of heat-exchanged reformer.
The utility model provides a kind of thimble tube heat-exchanged reformer, comprising: inner sleeve, outer tube, discharge, tubular helical coil, bearing and fin;
Wherein, described outer tube to be enclosed within outside described inner sleeve and to form annular space between described outer tube and described inner sleeve, described tubular helical coil is arranged on the inwall of described inner sleeve, described fin is arranged on the outer wall of described inner sleeve, described bearing settlement is in the bottom of described inner sleeve and described outer tube, and described discharge is arranged on the below of described bearing and is communicated with described inner sleeve;
The side wall upper part of described outer tube offers air inlet, and the lower sidewall of described outer tube offers gas outlet, and the top of described inner sleeve is 90 degree and bends and the sidewall passing described outer tube;
Described air inlet enters the interface of described annular space for gas of supplying raw materials, the interface of described annular space is flowed out for providing after conversion one section of reformed gas in described gas outlet, the interface of described discharge for providing high temperature two process transform gas to enter described inner sleeve, the interface that the top of described inner sleeve goes out for providing the described two process transform air-flow after cooling.
Further, the inner side of described discharge is provided with refractory concrete soil layer, and the arranged outside of described discharge has cooling water jecket.
Further, described discharge is directly communicated with by welding with described inner sleeve; Or described discharge is communicated with described inner sleeve by connecting short tube.
Further, in the below of described air inlet, the sidewall of described outer tube outwards presents semicircle shape projection, forms expansion joint.
Further, the quantity of described fin is 6 or 8.
Further, catalyst is filled with in described annular space.
Further, the diameter of described inner sleeve is 60 × 5 millimeters ~ 76 × 6 millimeters, and the length of described inner sleeve is 7500 millimeters ~ 11500 millimeters; The diameter of described outer tube is 150 × 10 millimeters ~ 160 × 11 millimeters, and the length of described outer tube is 8000 millimeters ~ 12000 millimeters.
The utility model thimble tube heat-exchanged reformer, unstripped gas is by originally walking in inner sleeve, change away the annular space between inner sleeve and outer tube into, because high temperature two process transform gas is higher than the temperature of unstripped gas, when identical insulation thickness, heat waste reduces about 20%, is more conducive to the methane conversion in annular space.Tubular helical coil is set in inner sleeve, changes the flow regime of two process transform gas in inner sleeve, improve the heat transfer coefficient in inner sleeve, be also conducive to methane conversion.In the annular space of Catalyst packing between inner sleeve and outer tube, instead of be contained in inner sleeve, compared with the inside and outside sleeve pipe of same size in prior art, the loadings of catalyst can increase by more than 50%, therefore, under identical production-scale prerequisite, the number of tubes of thimble tube heat-exchanged reformer can be reduced, reduce equipment investment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model or technical scheme of the prior art, be briefly described to the accompanying drawing used required in utility model or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a structural representation of the utility model thimble tube heat-exchanged reformer;
Fig. 2 is a structural representation of the utility model thimble tube heat-exchanged reformer A-A ' section;
Fig. 3 is another structural representation of the utility model thimble tube heat-exchanged reformer A-A ' section;
Fig. 4 is another structural representation of the utility model thimble tube heat-exchanged reformer.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model, technical scheme in the utility model is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is a structural representation of the utility model thimble tube heat-exchanged reformer, as shown in Figure 1, this thimble tube heat-exchanged reformer can comprise: inner sleeve 1, outer tube 2, discharge 3, tubular helical coil 4, bearing 5 and fin (not shown in figure 1); Wherein, outer tube 2 to be enclosed within outside inner sleeve 1 and to form annular space 6 between outer tube 2 and inner sleeve 1, tubular helical coil 4 is arranged on the inwall of inner sleeve 1, fin is arranged on the outer wall of inner sleeve 1, bearing 5 is arranged on the bottom of inner sleeve 1 and outer tube 2, and discharge 3 is arranged on the below of bearing 5 and is communicated with inner sleeve 1; The side wall upper part of outer tube 2 offers air inlet 7, and the lower sidewall of outer tube 2 offers gas outlet 8, and the top of inner sleeve 1 is 90 degree and bends and the sidewall passing outer tube 2; Air inlet 7 enters the interface of annular space for gas of supplying raw materials, the interface of gas outlet 8 for providing one section of reformed gas after conversion to flow out annular space, the interface of discharge 3 for providing high temperature two process transform gas to enter inner sleeve, the interface that the top 9 of inner sleeve 1 goes out for providing the two process transform air-flow after cooling.Catalyst 10 is filled with in annular space 6.
Illustrate the course of work of above-mentioned thimble tube heat-exchanged reformer: using hydro carbons gas as unstripped gas, the pressure of this unstripped gas is 1.0 MPas (MPa) ~ 5.0MPa, temperature is 450 degrees Celsius (DEG C) ~ 650 DEG C, unstripped gas enters the annular space 6 between inner sleeve 1 and outer tube 2 from air inlet 7, unstripped gas is from top to bottom through catalyst 10, and absorb the heat of high temperature two process transform gas in inner sleeve 1, carry out methane conversion, gas through methane conversion is one section of reformed gas, one section of reformed gas flows out from gas outlet 8, methane content now in unstripped gas is down to 15% ~ 30%, and enter next equipment.The pressure of above-mentioned high temperature two process transform gas is 1.0MPa ~ 5.0MPa, temperature is 850 DEG C ~ 1010 DEG C, high temperature two process transform gas enters discharge 3, be evenly distributed in each inner sleeve 1, flow from bottom to top again, for in annular space 6 unstripped gas the heat carried out needed for methane conversion is provided, then the temperature of two process transform gas is down to 650 DEG C ~ 750 DEG C, flows out from the top 9 of inner sleeve 1.
The utility model Raw gas is by originally walking in inner sleeve 1, change away the annular space 6 between inner sleeve 1 and outer tube 2 into, because high temperature two process transform gas is higher than the temperature of unstripped gas, when identical insulation thickness, heat waste reduces about 20%, is more conducive to the methane conversion in annular space 6.Tubular helical coil 4 is set in inner sleeve 1, changes the flow regime of two process transform gas in inner sleeve 1, improve the heat transfer coefficient in inner sleeve 1, be also conducive to methane conversion.Catalyst 10 is seated in the annular space 6 between inner sleeve 1 and outer tube 2, instead of be contained in inner sleeve 1, compared with the inside and outside sleeve pipe of same size in prior art, the loadings of catalyst 10 can increase by more than 50%, therefore, under identical production-scale prerequisite, the number of tubes of thimble tube heat-exchanged reformer can be reduced, reduce equipment investment.
Further, as shown in Figure 1, the inner side of discharge 3 is provided with refractory concrete soil layer 11, and the arranged outside of discharge 3 has cooling water jecket 12.
Discharge 3 adopts " cold wall " structure, namely arranges refractory concrete soil layer 11 in inner side, reduces the tube wall temperature of discharge 3; Arranged outside cooling water jecket 12, guarantees that discharge 3 is safe and reliable.Because the tube wall temperature of discharge 3 is lower, about about 120 DEG C, so thermal expansion amount ratio " hot wall " pipe greatly reduces, thus the stress level of the pipeline associated components of thimble tube heat-exchanged reformer is reduced greatly, more safe and reliable.
Further, as shown in Figure 1, in the below of air inlet 7, the sidewall of outer tube 2 outwards presents semicircle shape projection, forms expansion joint 13.
Preferably, the diameter of inner sleeve 1 is 60 × 5 millimeters ~ 76 × 6 millimeters, and the length of inner sleeve 1 is 7500 millimeters ~ 11500 millimeters; The diameter of outer tube 2 is 150 × 10 millimeters ~ 160 × 11 millimeters, and the length of outer tube 2 is 8000 millimeters ~ 12000 millimeters.
Because low temperature feedstock makes annular space 6 leave with rage, so the weight of inner sleeve 1 and outer tube 2 reduces about 20%, the material requirements of outer tube 2 also reduces, and does not need HP-Nb, as long as just passable with HK-40, thus reduces investment outlay.
Fig. 2 is a structural representation of the utility model thimble tube heat-exchanged reformer A-A ' section, Fig. 3 is another structural representation of the utility model thimble tube heat-exchanged reformer A-A ' section, Fig. 2 and Fig. 3 is the plan structure schematic diagram along the A-A ' hatching line in Fig. 1, as shown in Figure 2, the outer wall of inner sleeve 1 is provided with 8 fins 14 equably, as shown in Figure 3, the outer wall of inner sleeve 1 is provided with 6 fins 14 equably.Add the heat exchange area inside and outside inner sleeve 1 by fin 14, reduce the calorific intensity of the outer wall surface of inner sleeve 1, be conducive to methane conversion.
Fig. 4 is another structural representation of the utility model thimble tube heat-exchanged reformer, and the structural representation shown in Fig. 4 and Fig. 1 is substantially similar, and difference is, in Fig. 1, discharge 3 is directly communicated with by welding with inner sleeve 1; In Fig. 4, discharge 3 is communicated with inner sleeve 1 by connecting short tube 15.
Two kinds of connected modes of discharge 3, do not allow inner sleeve 1 to expand downwards, and can only upwards expand.Connected mode shown in Fig. 1 is directly welded with discharge 3, so just eliminate the pigtail of discharge mutually due to inner sleeve 1; Connected mode shown in Fig. 4 is that inner sleeve 1 is connected with discharge 3 by a connection short tube 15, can arrange more inner sleeve 1 like this.
According to production-scale needs, the thimble tube heat-exchanged reformer sleeve pipe of configuration respective numbers, this quantity can be dozens of, or even hundreds of, dispose these sleeve pipes by above-mentioned deployment way, the demand that production scale maximizes can be met.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a thimble tube heat-exchanged reformer, is characterized in that, comprising: inner sleeve, outer tube, discharge, tubular helical coil, bearing and fin;
Wherein, described outer tube to be enclosed within outside described inner sleeve and to form annular space between described outer tube and described inner sleeve, described tubular helical coil is arranged on the inwall of described inner sleeve, described fin is arranged on the outer wall of described inner sleeve, described bearing settlement is in the bottom of described inner sleeve and described outer tube, and described discharge is arranged on the below of described bearing and is communicated with described inner sleeve;
The side wall upper part of described outer tube offers air inlet, and the lower sidewall of described outer tube offers gas outlet, and the top of described inner sleeve is 90 degree and bends and the sidewall passing described outer tube;
Described air inlet enters the interface of described annular space for gas of supplying raw materials, the interface of described annular space is flowed out for providing after conversion one section of reformed gas in described gas outlet, the interface of described discharge for providing high temperature two process transform gas to enter described inner sleeve, the interface that the top of described inner sleeve goes out for providing the described two process transform air-flow after cooling.
2. reburner according to claim 1, is characterized in that, the inner side of described discharge is provided with refractory concrete soil layer, and the arranged outside of described discharge has cooling water jecket.
3. reburner according to claim 1, is characterized in that, described discharge is directly communicated with by welding with described inner sleeve; Or described discharge is communicated with described inner sleeve by connecting short tube.
4. reburner according to claim 1, is characterized in that, in the below of described air inlet, the sidewall of described outer tube outwards presents semicircle shape projection, forms expansion joint.
5. reburner according to claim 1, is characterized in that, the quantity of described fin is 6 or 8.
6. reburner according to claim 1, is characterized in that, is filled with catalyst in described annular space.
7. the reburner according to any one of claim 1 ~ 6, is characterized in that, the diameter of described inner sleeve is 60 × 5 millimeters ~ 76 × 6 millimeters, and the length of described inner sleeve is 7500 millimeters ~ 11500 millimeters; The diameter of described outer tube is 150 × 10 millimeters ~ 160 × 11 millimeters, and the length of described outer tube is 8000 millimeters ~ 12000 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439167.3U CN204122092U (en) | 2014-08-06 | 2014-08-06 | Thimble tube heat-exchanged reformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439167.3U CN204122092U (en) | 2014-08-06 | 2014-08-06 | Thimble tube heat-exchanged reformer |
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| Publication Number | Publication Date |
|---|---|
| CN204122092U true CN204122092U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420439167.3U Active CN204122092U (en) | 2014-08-06 | 2014-08-06 | Thimble tube heat-exchanged reformer |
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| Country | Link |
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| CN (1) | CN204122092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812499A (en) * | 2016-09-14 | 2018-03-20 | 乔治·克劳德方法的研究开发空气股份有限公司 | With structural catalyst and improved thermally equilibrated reformer tubes |
-
2014
- 2014-08-06 CN CN201420439167.3U patent/CN204122092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812499A (en) * | 2016-09-14 | 2018-03-20 | 乔治·克劳德方法的研究开发空气股份有限公司 | With structural catalyst and improved thermally equilibrated reformer tubes |
| CN107812499B (en) * | 2016-09-14 | 2021-12-28 | 乔治·克劳德方法的研究开发空气股份有限公司 | Reformer tubes with structured catalyst and improved heat balance |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160920 Address after: 610041 Sichuan, Chengdu, Wuhou District, wash Bridge Street, No. 29 Patentee after: Chengdu General Engineering Technology Co., Ltd. Address before: 610041 Sichuan, Chengdu, Wuhou District, wash Bridge Street, No. 29 Patentee before: Pang Yuxue |