CN205024168U - Convection section furnace tube structure of steam cracking simulation experiment furnace - Google Patents
Convection section furnace tube structure of steam cracking simulation experiment furnace Download PDFInfo
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- CN205024168U CN205024168U CN201520739755.3U CN201520739755U CN205024168U CN 205024168 U CN205024168 U CN 205024168U CN 201520739755 U CN201520739755 U CN 201520739755U CN 205024168 U CN205024168 U CN 205024168U
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- pipe
- shaped coil
- steam cracking
- section
- heating tube
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- 238000004230 steam cracking Methods 0.000 title claims abstract description 31
- 238000004088 simulation Methods 0.000 title abstract 2
- 238000002474 experimental method Methods 0.000 claims description 33
- 238000009826 distribution Methods 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 210000005239 tubule Anatomy 0.000 claims description 2
- 238000005336 cracking Methods 0.000 description 9
- 239000012895 dilution Substances 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model provides a steam cracking simulation experiment stove convection current section boiler tube structure, the convection current boiler tube includes a downcomer, a distributing pipe, a U-shaped coil pipe, the U-shaped coil pipe with the distributing pipe arranges from top to bottom, and set up in one side of convection current boiler tube, the downcomer for the U-shaped coil pipe with the distributing pipe set up in the opposite side of convection current boiler tube, the U-shaped coil pipe with the downcomer respectively with the entry end and the exit end intercommunication of distributing pipe.
Description
Technical field
The utility model relates to a kind of hydrocarbon vapours cracking analogue experiment installation, particularly a kind of for hydrocarbon cracking stove heating tube in section of convection chamber structure.
Background technology
Steam cracking device is petrochemical industry " tap ", is to produce one of important topmost means of basic organic chemical industry raw material such as low-carbon alkene (ethene, propylene and divinyl) and aromatic hydrocarbons (benzene, toluene and dimethylbenzene).Along with the maximization of steam cracking device scale, in order to the smooth running of device, reduce costs, reduce energy consumption and material consumption, increase economic efficiency.Generally need to utilize steam cracking analogue experiment installation to carry out simulative optimization industrial pyrolysis furnace operating parameters in the lab, optimize pyrolyzer operation conditions.
Pyrolyzer is the main reactor of steam cracking analogue experiment installation, is the nucleus equipment of most critical.Heating tube in section of convection chamber is the major parts of steam cracking simulated experiment stove, and its Main Function is by cracking stock preheating, vaporization be superheated to initial cracking temperature (cross-over temperature).Therefore, the structural shape of heating tube in section of convection chamber, geometrical shape and size etc., play an important role to the processing performance of steam cracking simulated experiment stove, boiler tube work-ing life.
At present, in simulated experiment stove heating tube in section of convection chamber, distribution pipe is arranged horizontally, namely cracking stock passes through distribution pipe after entering downtake in a horizontal manner, enter in U-shaped coil pipe after collecting again, this easily causes dilution steam generation vaporization rate shakiness and furnace tube deposition phenomenon, the fluctuation of dilution steam generation flow, thus the smooth running affecting cracking analogue experiment installation, be difficult to the confidence level ensureing cracking simulated experiment data.
Utility model content
The utility model is just for the deficiency that existing simulated experiment stove heating tube in section of convection chamber exists, there is provided a kind of steam cracking simulated experiment stove heating tube in section of convection chamber structure, this experimental furnace heating tube in section of convection chamber, not only meets pyrolyzer processing requirement, and dilution steam generation vaporization rate is steady, slows down furnace tube deposition.
To achieve these goals, the utility model provides a kind of steam cracking simulated experiment stove heating tube in section of convection chamber structure, it is characterized in that, described convection coil comprises a downtake, a distribution pipe, a U-shaped coil pipe, described U-shaped coil pipe and described distribution pipe are arranged up and down, and be arranged at the side of described convection coil, described downtake is arranged at the opposite side of described convection coil relative to described U-shaped coil pipe and described distribution pipe, and described U-shaped coil pipe is communicated with exit end with the inlet end of described distribution pipe respectively with described downtake.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, described distribution pipe is that two upper and lower parallel transverse tubes and the multiple vertical tubulation be arranged between two transverse tubes are formed, and described parallel transverse tube is communicated with described vertical tubulation, described upper lateral tube is communicated with U-shaped coil inlet, and described lower transverse tubule is communicated with downcomer outlet port.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, described vertical tubulation is the tubulation of 6 spaced sets.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, the entrance of described downtake is threaded with a material feeding tube.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, described U-shaped coil outlets is threadedly connected with a radiant section furnace tube inlet.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, described U-shaped coil pipe curves many group U-shaped pipes by a straight pipe and is formed.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, welds with wide tagger on the left of U-shaped pipe outer wall described in two adjacent groups, carries out welding with fixing U-shaped coil pipe on the right side of U-shaped pipe outer wall described in two adjacent groups with narrow tagger.
Described steam cracking simulated experiment stove heating tube in section of convection chamber structure, described distribution pipe, described U-shaped coil pipe and described downtake are all in same plane and arrange.
Beneficial functional of the present utility model is:
1, distribution pipe horizontally changes into arranged vertically by general, and be conducive to dilution steam generation and cracking stock uniformly distributing, gasification steadily;
2, the unsuitable fouling of heating tube in section of convection chamber, boiler tube long service life.
3, the utility model steam cracking simulated experiment stove convection zone structure simple, be easy to manufacture.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of steam cracking simulated experiment stove heating tube in section of convection chamber structure.
Wherein: Reference numeral
1, downcomer inlet
2, the first U-shaped coil pipe anchor
3, downtake
4, U-shaped coil pipe
5, distribution pipe
6, distribution pipe entrance
7, distribution pipe outlet
8, the second U-shaped coil pipe anchor
9, U-shaped coil outlets
Embodiment
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model are described in detail, to understand the purpose of this utility model, effect further.
See the steam cracking simulated experiment stove heating tube in section of convection chamber structural representation that Fig. 1, Fig. 1 provide for the utility model.Steam cracking simulated experiment stove heating tube in section of convection chamber structure of the present utility model, comprise a downtake 3, one distribution pipe 5, one U-shaped coil pipe 4, described convection coil comprises a downtake, one distribution pipe, one U-shaped coil pipe, U-shaped coil pipe 4 and distribution pipe about 5 are arranged, and be arranged at the side of described convection coil, described downtake is arranged at the opposite side of described convection coil relative to described U-shaped coil pipe and described distribution pipe, distribution pipe entrance 6 is connected with downtake 3, distribution pipe outlet 7 is connected with U-shaped coil pipe 4, as Fig. 1 downtake 3 is positioned at right side, distribution pipe 5 and U-shaped coil pipe 4 are positioned at left side, distribution pipe 5 is in the below of U-shaped coil pipe 4, downtake 3, distribution pipe 5 and U-shaped coil pipe 4 integral unit are all in same plane and arrange.Distribution pipe 5 is that upper and lower two transverse tubes and 6 the vertical tubulations be arranged between two transverse tubes are formed, and parallel transverse tube is communicated with vertical tubulation, and upper crosstalk tube is communicated with U-shaped coil inlet, and lower crosstalk tube is communicated with downcomer outlet port.
Downtake 3 long 1400 ~ 1500mm, internal diameter 8 ~ 10mm, wall thickness 2 ~ 3mm, downcomer inlet 1 is threaded with a material feeding tube, and downcomer outlet port welds with distribution pipe entrance 6.
U-shaped coil pipe is by the long 1800 ~ 2000mm of a straight tube, internal diameter 8 ~ 10mm, wall thickness 2 ~ 3mm curve 5 groups of U-shaped pipes and are formed, the both sides of U-shaped coil pipe are fixed with the first U-shaped coil pipe anchor 2, second U-shaped coil pipe anchor 8, this the first U-shaped coil pipe anchor 2 is narrow tagger, second U-shaped coil pipe anchor 8 is wide tagger, weld with wide tagger on the left of U-shaped pipe outer wall described in two adjacent groups, carry out welding with fixing U-shaped coil pipe 4 with narrow tagger on the right side of U-shaped pipe outer wall described in two adjacent groups, prevent U-shaped pipe 4 expanded by heating to be out of shape.Wherein, wide tagger long 800 ~ 1000mm, wide 40 ~ 50mm, heavy wall 2 ~ 3mm; Narrow tagger long 400 ~ 600mm, wide 10 ~ 20mm, heavy wall 2 ~ 3mm, U-shaped coil outlets 9 is threadedly connected with a radiant section furnace tube inlet.
The upper and lower transverse tube long 400 ~ 500mm respectively of distribution pipe 5, internal diameter 10 ~ 12mm, wall thickness 2 ~ 3mm, pipe range 200 ~ the 300mm of equally spaced arrangement 6 vertical tubes, internal diameter 8 ~ 10mm, wall thickness 2 ~ 3mm, 6 vertical tube difference vertical weldings are between two transverse tubes, distribution pipe changes vertical tube into by general horizontal tubulation, heating tube in section of convection chamber is being met under the requirement of being heated, avoids dilution steam generation vaporization rate shakiness and furnace tube deposition phenomenon.
The utility model process conditions is: show by experiment, cracking experimental furnace downcomer inlet temperature 50 C, and U-shaped Coil outlet temperature 500 ~ 550 DEG C, meets the requirement of steam cracking analogue experiment installation.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (8)
1. a steam cracking simulated experiment stove heating tube in section of convection chamber structure, it is characterized in that, described convection coil comprises a downtake, a distribution pipe, a U-shaped coil pipe, described U-shaped coil pipe and described distribution pipe are arranged up and down, and be arranged at the side of described convection coil, described downtake is arranged at the opposite side of described convection coil relative to described U-shaped coil pipe and described distribution pipe, and described U-shaped coil pipe is communicated with exit end with the inlet end of described distribution pipe respectively with described downtake.
2. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 1, it is characterized in that, described distribution pipe is that two upper and lower parallel transverse tubes and the multiple vertical tubulation be arranged between two transverse tubes are formed, and described parallel transverse tube is communicated with described vertical tubulation, described upper lateral tube is communicated with U-shaped coil inlet, and described lower transverse tubule is communicated with downcomer outlet port.
3. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 1, it is characterized in that, described vertical tubulation is the tubulation of 6 spaced sets.
4. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 1, it is characterized in that, the entrance of described downtake is threaded with a material feeding tube.
5. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 3, it is characterized in that, described U-shaped coil outlets is threadedly connected with a radiant section furnace tube inlet.
6. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 1, is characterized in that, described U-shaped coil pipe curves many group U-shaped pipes by a straight pipe and formed.
7. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 6, it is characterized in that, weld with wide tagger on the left of U-shaped pipe outer wall described in two adjacent groups, carry out welding with fixing U-shaped coil pipe with narrow tagger on the right side of U-shaped pipe outer wall described in two adjacent groups.
8. steam cracking simulated experiment stove heating tube in section of convection chamber structure according to claim 1, is characterized in that, described distribution pipe, described U-shaped coil pipe and described downtake are all in same plane and arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739755.3U CN205024168U (en) | 2015-09-22 | 2015-09-22 | Convection section furnace tube structure of steam cracking simulation experiment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739755.3U CN205024168U (en) | 2015-09-22 | 2015-09-22 | Convection section furnace tube structure of steam cracking simulation experiment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205024168U true CN205024168U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520739755.3U Active CN205024168U (en) | 2015-09-22 | 2015-09-22 | Convection section furnace tube structure of steam cracking simulation experiment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205024168U (en) |
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2015
- 2015-09-22 CN CN201520739755.3U patent/CN205024168U/en active Active
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