CN203737214U - Low-resistance combined type gas uniform distributor used in fixed bed reactor - Google Patents
Low-resistance combined type gas uniform distributor used in fixed bed reactor Download PDFInfo
- Publication number
- CN203737214U CN203737214U CN201420118975.XU CN201420118975U CN203737214U CN 203737214 U CN203737214 U CN 203737214U CN 201420118975 U CN201420118975 U CN 201420118975U CN 203737214 U CN203737214 U CN 203737214U
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- Prior art keywords
- fixed bed
- gas
- distributor
- resistance combined
- conical hopper
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- Expired - Lifetime
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- 230000008676 import Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 30
- 239000003054 catalyst Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model relates to a low-resistance combined type gas uniform distributor used in a fixed bed reactor. The uniform distributor consists of concentric taper sleeves and a porous distribution plate, wherein the concentric taper sleeves consist of a plurality of layers of tapered funnels; an inlet of the plurality layers of the tapered funnels is connected with a main tube of a gas inlet of the fixed bed reactor and is positioned on one same plane; the porous distribution plate is arranged below an outlet of the plurality layers of the tapered funnels; a plurality of round holes are formed in the porous distribution plate. The uniform distributor is simple in structure, low in manufacturing cost and good in gas uniform distribution.
Description
Technical field
The utility model relates to chemical production technical field, relates in particular to a kind of lower resistance combined gas uniform device for fixed bed reactors.
Background technology
Fixed bed reactors, due to simple in structure, are widely used in chemical process.But while entering reactor due to air-flow from inlet pipeline, flow area sudden enlargement, cause reactor cross section overdraught distributed pole inhomogeneous, the gas flow at reactor center position and reactor edge is inconsistent, make a part of catalyst loading overweight, and another part catalyst work hardly.This problem is particularly outstanding to thin bed reactor.Therefore, while being amplified to large commercial plant from small test equipment, although can make it have identical superficial gas velocity, but due to above-mentioned reason, cause process to worsen and reactor performance decline, reduced the efficiency of catalyst and reactor, this is the one of the main reasons that causes usually said " enlarge-effect ".Obviously, if can make the gas flow in reactor cross section be uniformly distributed, just can improve the reactivity worth of reactor, thereby obtain good reaction result and corresponding economic benefit.
The gas distributor form of the industrial fixed bed being applied is various, mainly contains single tube distributor, manifold gas distributor, straight tube open cell type gas distributor and tapered sleeve type gas distributor etc.
Single tube gas mixer is mainly used in tubular reactor, is difficult to large-scale application in catalytic bed owing to amplifying difficulty.Meanwhile, it is to reach required mixed effect that the charging of single tube single hole also has a disadvantage, and concentration root-mean-square-deviation value is less than 5%, and needed Mixed Zone starts mixing distance that need to be longer from porous plate below.
Manifold gas distributor research more extensive, the design of its each parameter and calculate fairly perfect, but complex structure is designed with great difficulty.While adopting this porous distributor, fluid does variable mass and flows, and turn sharp while flowing into arm from supervisor, forms very large vortex region, thereby will realize above-mentioned requirements, must be well-designed to it, and processing meticulously; And when mounted, must meticulously control it, just can reach good mixed effect.
Although straight tube open cell type gas distributor and tapered sleeve gas distributor structure are relatively simple, and can reach certain distribution consistency degree, require high occasion to be still difficult to meet the demands for gas phase is uniform.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, lower resistance combined gas uniform device for fixed bed reactors that even gas distribution is good.
For addressing the above problem, a kind of lower resistance combined gas uniform device for fixed bed reactors described in the utility model, is characterized in that: it is made up of concentric tapered sleeve and multihole distributor; Described concentric tapered sleeve is made up of multilayer conical hopper, and the gas feed house steward of the import of this multilayer conical hopper and fixed bed reactors joins, and in same plane; The outlet below of described multilayer conical hopper is provided with described multihole distributor, has several circular holes on this multihole distributor.
Even or inhomogeneous several circular holes that has on described multihole distributor.
Circularhole diameter in described several circular holes and the outlet of described multilayer conical hopper gas phase flow rate out match.
The utility model compared with prior art has the following advantages:
1, tapered sleeve in the utility model is made up of multilayer conical hopper, the import of conical hopper is in same plane, gas is entered the gap of each conical hopper by intake header shunting, it is further uniform that the gas phase that exports out from tapered sleeve is positioned at the multihole distributor of tapered sleeve below, simultaneously, even or circular hole that the inhomogeneous outlet that has several and multilayer conical hopper gas phase flow rate out matches on multihole distributor, thereby make to equate by the gas phase flow rate of each circular hole, reach the object of airflow uniform distribution, effectively avoid air-flow skewness in reactor, partially catalyzed agent utilization rate is on the low side, partially catalyzed agent processing reaction gas flow is bigger than normal, the even caused catalyst coking of temperature distributing disproportionation in beds, inactivation, the problem of the lost of life and the result of deteriorative reaction.
2,, through reality test, the utility model distribution of gas uniformity is far above single straight tube porous distributor and multilayer tapered sleeve distributor, and gas by pressure drop of the present utility model much smaller than manifold distributor.
3, the utility model is simple in structure, cost is low, and resistance low, be difficult for obstruction, easy cleaning, easily install.
Brief description of the drawings
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
In figure: 1-tapered sleeve 2-multihole distributor 3-fixed bed reactors 4-gas feed house steward with one heart.
Detailed description of the invention
As shown in Figure 1, a kind of lower resistance combined gas uniform device for fixed bed reactors, it is made up of concentric tapered sleeve 1 and multihole distributor 2.With one heart tapered sleeve 1 is made up of multilayer conical hopper, and the gas feed house steward 4 of the import of this multilayer conical hopper and fixed bed reactors 3 joins, and in same plane; The outlet below of multilayer conical hopper is provided with multihole distributor 2, on this multihole distributor 2, has several circular holes.
Wherein: even or inhomogeneous several circular holes that has on multihole distributor 2.
The outlet of the Circularhole diameter in several circular holes and described multilayer conical hopper gas phase flow rate out matches.
embodimentbe 1360 ~ 3060m for the size of gas phase treatment amount
3/ hr, diameter is the fixed bed reactors of 4m ~ 6m, architectural feature of the present utility model is: tapered sleeve 1 is made up of five layers of conical hopper with one heart, the import of conical hopper is in same plane, and the angle that the outlet of tapered sleeve is opened is from inside to outside followed successively by a1=30 °, a2=50 °, a3=70 ° and a4=90 °; , the inlet tube diameter of each layer of tapered sleeve is followed successively by D1=50 ~ 60mm, D2=100 ~ 110mm, D3=150 ~ 160mm, D4=200 ~ 210mm; Tapered sleeve outlet is respectively h1=320 ~ 340mm, h2=260 ~ 280mm, h3=220 ~ 240mm, h4=160 ~ 180mm apart from intake header height.Diameter DB=4000 ~ the 6000mm of multihole distributor 2, has the circular hole of 4000 diameter d b=20mm on it, circular hole is square to be arranged, and the spacing between circular hole is 40 ~ 50mm.
Claims (3)
1. for a lower resistance combined gas uniform device for fixed bed reactors, it is characterized in that: it is made up of concentric tapered sleeve (1) and multihole distributor (2); Described concentric tapered sleeve (1) is made up of multilayer conical hopper, and the gas feed house steward (4) of the import of this multilayer conical hopper and fixed bed reactors (3) joins, and in same plane; The outlet below of described multilayer conical hopper is provided with described multihole distributor (2), and this multihole distributor has several circular holes on (2).
2. a kind of lower resistance combined gas uniform device for fixed bed reactors as claimed in claim 1, is characterized in that: upper even or inhomogeneous several circular holes that has of described multihole distributor (2).
3. a kind of lower resistance combined gas uniform device for fixed bed reactors as claimed in claim 1, is characterized in that: the Circularhole diameter in described several circular holes and the outlet of described multilayer conical hopper gas phase flow rate out match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118975.XU CN203737214U (en) | 2014-03-18 | 2014-03-18 | Low-resistance combined type gas uniform distributor used in fixed bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118975.XU CN203737214U (en) | 2014-03-18 | 2014-03-18 | Low-resistance combined type gas uniform distributor used in fixed bed reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203737214U true CN203737214U (en) | 2014-07-30 |
Family
ID=51337078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118975.XU Expired - Lifetime CN203737214U (en) | 2014-03-18 | 2014-03-18 | Low-resistance combined type gas uniform distributor used in fixed bed reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203737214U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243298A (en) * | 2017-07-26 | 2017-10-13 | 德艾柯工程技术（上海）有限公司 | A kind of temperature control gas-solid horizontal reactor for having special distributor |
| CN108926990A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of catalytic reactor for VOCs gas purification |
| US10201792B2 (en) | 2015-05-14 | 2019-02-12 | Sabic Global Technologies B.V. | Reactors and reactor-internal devices for dehydrogenation of hydrocarbons |
| CN116078275A (en) * | 2023-01-03 | 2023-05-09 | 东方电气集团东方锅炉股份有限公司 | High-efficiency gas distributor and vertical large-scale reactor |
-
2014
- 2014-03-18 CN CN201420118975.XU patent/CN203737214U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10201792B2 (en) | 2015-05-14 | 2019-02-12 | Sabic Global Technologies B.V. | Reactors and reactor-internal devices for dehydrogenation of hydrocarbons |
| CN108926990A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of catalytic reactor for VOCs gas purification |
| CN108926990B (en) * | 2017-05-24 | 2021-02-23 | 中国石油化工股份有限公司 | Catalytic reactor for VOCs gas purification |
| CN107243298A (en) * | 2017-07-26 | 2017-10-13 | 德艾柯工程技术（上海）有限公司 | A kind of temperature control gas-solid horizontal reactor for having special distributor |
| CN116078275A (en) * | 2023-01-03 | 2023-05-09 | 东方电气集团东方锅炉股份有限公司 | High-efficiency gas distributor and vertical large-scale reactor |
| CN116078275B (en) * | 2023-01-03 | 2024-06-07 | 东方电气集团东方锅炉股份有限公司 | High-efficiency gas distributor and vertical large-scale reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Xigu District of Gansu province Lanzhou City welfare road 730060 No. 191 Patentee after: LANZHOU HUANQIU ENGINEERING Co.,Ltd. Address before: Xigu District of Gansu province Lanzhou City welfare road 730060 No. 191 Patentee before: LANZHOU HUANQIU CONSTRUCTING & ENGINEERING Corp. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20201207 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: LANZHOU HUANQIU ENGINEERING Co.,Ltd. Address before: Xigu District of Gansu province Lanzhou City welfare road 730060 No. 191 Patentee before: LANZHOU HUANQIU ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
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| CX01 | Expiry of patent term |