CN202146772U - Gas phase distributor - Google Patents
Gas phase distributor Download PDFInfo
- Publication number
- CN202146772U CN202146772U CN201120138612U CN201120138612U CN202146772U CN 202146772 U CN202146772 U CN 202146772U CN 201120138612 U CN201120138612 U CN 201120138612U CN 201120138612 U CN201120138612 U CN 201120138612U CN 202146772 U CN202146772 U CN 202146772U
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- main body
- body pipe
- gas phase
- vapor distributor
- cover plate
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Abstract
The utility model relates to a gas phase distributor and belongs to an internal member of a gas phase hydrogenation reactor of a fixed bed used in petroleum refining and chemical engineering. The gas phase distributor comprises a cover plate, a main body pipe, and a bottom plate, wherein the cover plate is arranged on the main body pipe, the bottom plate is connected to the lower part of the main body pipe, the gas phase distributor is mounted on a distribution plate, and the main body pipe is divided into an upper part and a lower part. The gas phase distributor is characterized in that holes are uniformly formed on the side walls of the upper part and the lower part of the main body pipe, and holes are also uniformly formed on the bottom plate. Due to the adoption of the bottom plate with the multihole main body pipe and the special structure, the gas phase distributing property is perfected, and the problems of center flow and refracted flow can be reduced. The gas phase distributor can enable gas phase to be diffused better and evenly distributed on a catalyst bed layer, and the gas phase distributor has the characteristics of good distributing performance, low pressure drop, high operational flexibility, and wide scope of application.
Description
Technical field
The utility model relates to a kind of petroleum refining and chemical industry equipment, particularly a kind of inner member that is used for hydrogenation reactor.
Background technology
The gasoline hydrogenation device generally all adopts two sections insulation fix bed reactors both at home and abroad at present, and first section is adopted gas-liquid phase hydrogenation method, and second section is adopted pure gas phase hydrogenation method.Although variant on flow process, the flow process principle of two-stage hydrogenation is basic identical.Owing to the difference of the performance of catalysts selective, raw material composition etc. causes the difference of reactor inner member, bigger difference is arranged also in the operation.Hydrogenation catalyst and reactor inner member are the keys of hydrogen addition technology, and each large-engineering company develops multiple proprietary catalyst and inner member to gas-liquid phase hydrogenation process characteristic at present.
The gentle phase hydrogenation of fixed bed gas-liquid phase hydrogenation is that catalyst is different on the one hand, is that inner member is different on the other hand.One section fixed bed gas-liquid phase hydrogenation adopts bubble cap type distributor basically owing to have gas-liquid two-phase and stream, and two kinds of structures as 98250778.X and 200920227768.7 introduces have the suction fragmentation concurrently, and part is added with the stream breaker of special construction; Two sections Fixed Bed Gas Phase hydrogenation are because inlet feed is in gas phase basically; Traditional bubble cap structure distributor also can use; But distribution effects is relatively poor bigger with droop loss, and partial design adopts angle cast distributor, but angle cast distributor conflux with under center stream bigger.
For distribution of gas, because flowability is bigger, emphasical in the past catalyst or filler usually suppose that to the homogenization of speed inlet air flow is even distribution.Along with the exploitation of big voidage, low pressure drop, efficient catalyst or filler and the development of major diameter surface bed layer, especially for drippolene high temperature gas phase hydrogenation process, gas distribution problems causes people's attention and attention day by day.
Owe evenly if high-temperature gas did not evenly distribute or distributed before getting into beds, need just to reach even distribution, certainly will cause the end effect of distribution of gas through after the certain altitude.The gas phase bias current can reduce device efficiency greatly, and product quality is descended.Resolve the even gas distribution problem, vapor distributor rational in infrastructure need be set in reactor.So far, also be not specifically designed to vapor distributor in the hydrogenation reactor.
The utility model content
The purpose of the utility model is to provide a kind of vapor distributor, improves gas phase through the structural design that changes traditional gas-liquid allotter and distributes, and reduces the distributor pressure drop, improves distributor operational stability, operating flexibility and the scope of application.The utility model vapor distributor has broken through the design feature that traditional gas-liquid is distributed, and reduces the distributor pressure drop greatly, makes High Temperature Gas phase materials and catalyst even contact, reduces the temperature difference in the hydrogenation reactor bed cross section, improves oil quality, reduces production costs.
In order to achieve the above object, the technical scheme that the utility model adopted is: a kind of vapor distributor comprises cover plate, main body pipe and base plate; Cover plate is on the main body pipe; Connect base plate below the main body pipe, vapor distributor is installed on the distribution plate, and the main body pipe is divided into two parts up and down; It is characterized in that: main body pipe two parts side wall surface up and down has the hole equably, also has the hole on the base plate uniformly.
The basic configuration of said main body pipe perforate comprises vertical bar seam and spiral bar seam, also can be other shapes such as triangle seam, trapezoidal seam or circular, and basic setting principle need wide lacking for first half itemize seam; Lower Half itemize seam needs narrow and many; The perforate quantity on top is all at 2～6, and the perforate quantity of lower part is all at 8～16, and the top perforate of main body pipe is in order to let the gaseous phase materials baffling; The material that gets into the main body pipe from different perforates impacts mixing herein for the first time; The perforate of main body pipe lower part is to let a part of gas material baffling, and the material that gets off with adjacent distributor fully mixes, and is uniformly distributed with rapidly.
Said main body pipe is a pipe, also can be polygon pipe, wall thickness 2～6mm.For easy for installation, two parts internal diameter is identical up and down for the main body pipe, and the latter half external diameter forms an annular boss less than the first half external diameter 1～2mm.The concrete size of main body pipe lower part external diameter is confirmed according to the main body thickness of pipe wall.
Said base plate to be shaped as the circle corresponding with the main body pipe or polygon dull and stereotyped; But uniform perforate is arranged; Comprise radially bar seam and center hole or hoop bar seam; Perforate quantity and layout confirm that according to arts demand base plate thickness is equal to main body pipe the latter half thickness 2～4mm, also difference can be arranged slightly.
Said cover plate is a blind plate, prevents that material from directly getting into the main body pipe from top to bottom.Said cover plate to be shaped as the circle corresponding with the main body pipe or polygon dull and stereotyped; Thickness is equal to main body pipe the first half thickness 3～6mm; Also difference can be arranged slightly; In order to guide gas flow direction, relax the gas impact resistance, also can adopt tapered panel or spherical panel under the situation that the space reactor size allows.
The said a kind of vapor distributor of the utility model is simple in structure, good stability, so adopt all-welded structure between cover plate, main body pipe and the base plate.The vapor distributor of the utility model design can make gas spread better and mix, and is distributed in the whole reactor cross section rapidly, and pressure drop simultaneously is less.
The utility model vapor distributor is simple in structure, and is easy for installation, and the gas phase partition characteristic is good, and pressure drop is little, obvious in petroleum refining and chemical industry gas phase hydrogenation field using value.
Description of drawings
Fig. 1 is the complete section diagrammatic sketch of invention vapor distributor front view.
Fig. 2 is the A-A cross section sketch map that makes progress.
Fig. 3 is the downward sketch map in B-B cross section.
Reference numeral shown in the figure 1 is a base plate, and 2 is the main body pipe, and 21 is perforate under the main body pipe, and 22 is main body pipe boss, and 23 is perforate on the main body pipe, and 3 is cover plate.
The specific embodiment
Further specify the specific embodiment of the utility model vapor distributor below in conjunction with accompanying drawing.
The structure of the utility model vapor distributor is as shown in Figure 1, and mainly by base plate 1, main body pipe 2 constitutes with cover plate 3.Cover plate 3 is shaped as circular dull and stereotyped; Thickness is equal to main body pipe the first half thickness, in order to guide gas flow direction, relaxes the gas impact resistance; Also can adopt tapered panel or spherical panel under the situation that the space reactor size allows; Cover plate 3 is a blind plate, prevents that material from directly getting into the main body pipe from top to bottom and forming short circuit, and cover plate 3 is welded on the upper end of main body pipe 2; On the base plate 1 according to certain rules have radially bar seam 11 and a center hole 12; Also can on base plate 1, open loop stitch as required to bar; The main effect of bar seam is exactly that gaseous stream is uniformly distributed with below the main body pipe; Simultaneously base plate 1 makes perforate 21 shuntings under the main body pipe of main body pipe 2 of a part of gaseous stream, and base plate 1 is welded on the lower end of main body pipe 2; Main body pipe 2 has perforate 23 and following perforate 21, and last perforate 23 is wide, and quantity is at 3, and following perforate 21 is narrow, and quantity is 8, and the basic configuration of perforate comprises vertical bar seam and spiral bar seam, also can stitch for other shapes such as triangle, and trapezoidal is stitched perhaps circle; The main body pipe about in the of 2 two parts internal diameter identical; The latter half external diameter is less than the first half external diameter; Form an annular boss 22, the concrete size of main body pipe 2 lower part external diameters is confirmed according to main body pipe 2 wall thickness, must guarantee the machining accuracy and the levelness of boss 22; Boss structure can make distributor accurately locate on the one hand, and manufacturing is installed very convenient on the other hand.Because vapor distributor is simple in structure, reliability is high, does not need basically during maintenance to change, and therefore can directly be welded on distributor on the distribution plate, also can adopt traditional snap ring fixed structure or screw fixed structure.Be provided with the vapor distributor of some on the distribution tray according to arts demand, gaseous stream is distributed on the beds uniformly.
Claims (8)
1. vapor distributor; Comprise cover plate, main body pipe and base plate, cover plate connects base plate below the main body pipe on the main body pipe; Vapor distributor is installed on the distribution plate; The main body pipe is divided into two parts up and down, it is characterized in that: main body pipe two parts side wall surface up and down has the hole equably, also has the hole on the base plate uniformly.
2. a kind of vapor distributor according to claim 1 is characterized in that: said main body pipe is divided into two parts up and down, and internal diameter is identical, and the latter half external diameter forms an annular boss less than the first half external diameter 1～2mm.
3. a kind of vapor distributor according to claim 1 is characterized in that: said main body pipe is pipe or polygon pipe.
4. a kind of vapor distributor according to claim 1 is characterized in that: the basic configuration of said main body pipe perforate is vertical bar seam, spiral bar seam, triangle seam, trapezoidal seam or circular seams.
5. a kind of vapor distributor according to claim 1 is characterized in that: said main body pipe the first half perforate quantity is 2～6, and the latter half perforate quantity is 8～16.
6. a kind of vapor distributor according to claim 1 is characterized in that: said base plate perforate is for radially bar seam, center hole or hoop bar stitch.
7. a kind of vapor distributor according to claim 1 is characterized in that: said cover plate is a blind plate.
8. a kind of vapor distributor according to claim 1 is characterized in that: adopt welding manner to connect between said cover plate, main body pipe and the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120138612U CN202146772U (en) | 2011-04-29 | 2011-04-29 | Gas phase distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120138612U CN202146772U (en) | 2011-04-29 | 2011-04-29 | Gas phase distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202146772U true CN202146772U (en) | 2012-02-22 |
Family
ID=45587849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120138612U Expired - Lifetime CN202146772U (en) | 2011-04-29 | 2011-04-29 | Gas phase distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202146772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521140A (en) * | 2013-10-30 | 2014-01-22 | 北京石油化工工程有限公司 | Inlet gas distributor of fixed bed reactor |
| CN103566834A (en) * | 2012-07-30 | 2014-02-12 | 中国石油化工集团公司 | Gas-phase feeding diffuser |
-
2011
- 2011-04-29 CN CN201120138612U patent/CN202146772U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566834A (en) * | 2012-07-30 | 2014-02-12 | 中国石油化工集团公司 | Gas-phase feeding diffuser |
| CN103566834B (en) * | 2012-07-30 | 2015-11-25 | 中国石油化工集团公司 | A kind of gas-phase feed diffuser |
| CN103521140A (en) * | 2013-10-30 | 2014-01-22 | 北京石油化工工程有限公司 | Inlet gas distributor of fixed bed reactor |
| CN103521140B (en) * | 2013-10-30 | 2016-08-17 | 北京石油化工工程有限公司 | A kind of inlet gas distributor of fixed bed reactors |
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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: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Patentee after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Luoyang Petrochemical Engineering Co., China Petrochemical Group Patentee before: Sinopec Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120222 |
|
| CX01 | Expiry of patent term |