CN105363388A - Multi-phase liquid distribution structure for tubular reactor - Google Patents
Multi-phase liquid distribution structure for tubular reactor Download PDFInfo
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- CN105363388A CN105363388A CN201510881281.0A CN201510881281A CN105363388A CN 105363388 A CN105363388 A CN 105363388A CN 201510881281 A CN201510881281 A CN 201510881281A CN 105363388 A CN105363388 A CN 105363388A
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Abstract
The present invention provides a multi-phase liquid distribution structure for a tubular reactor. The multi-phase liquid distribution structure is arranged on an upper tube plate of the tubular reactor, and comprises a liquid distribution component; the liquid distribution component comprises a cap, a sleeve and a circular baffle, wherein a liquid distribution channel is arranged on the liquid distribution component in a manner that the circular baffle, corresponding to a annular region formed by each set of sleeve outer diameter and tubular reactor inner diameter, is provided with a plurality of distribution holes, or the side wall of the sleeve is circumferentially provided with a plurality of distribution holes. The multi-phase liquid distribution structure provided by the present invention can efficiently and uniformly distribute reaction feeds containing two or more immiscible solution phases into each tube of the tubular reactor, so that the reaction process is uniform, and the axial temperature gradient and the reaction effect difference between tunes are reduced. Meanwhile, by using the liquid distributor provided by the present invention can prevent loose loss of catalyst particles in the feed operation under the tube reactor or in the liquid-feeding and exhaust-discharging process from bottom to top.
Description
Technical field
The invention relates to a kind of novel multi-phase fluid distributor, specifically a kind of multi-phase fluid distributed architecture for shell and tube reactor.
Background technology
Shell and tube reactor is a kind of conventional chemical reactor, can operate as a fixed bed, also with the formal operations of trickle bed, can have very large flexibility.Such shell and tube reactor is generally used for the course of reaction of carrying out very exothermic or strong endothermic, to be heated by the heat medium in tube bank outside or cooling medium or to be cooled reaction.Multiple bundle of reaction tubes being filled with catalyst of doing is produced in the reaction of shell and tube reactor, reactant is evenly distributed to every root reaction tube particularly important.In the miscible system that only there is single liquid phase, this distribution ratio is easier to realize, as long as ensure that the resistance of every root reaction tube in tube bank is identical.But when reaction medium be two or more do not dissolve each other liquid phase time, assignment problem become more outstanding and be difficult to solve.
Generally be filled with in shell and tube reactor simultaneously shaping after catalyst granules, these particles are present in reactor tubulation with the form of natural packing and form beds, this bed is in the following feeding manner operation of reactor, or carry out in the process of system exhaust from bottom to up, can be formed loosening because of momentum effect, catalyst granules, in company with fluid outflow reactor tubulation, forms catalyst loss.Need to propose a kind of simple and easy scheme, the problem and the catalyst that solve multi-phase fluid distribution loosen the problem of loss simultaneously.
Summary of the invention
In view of this, the invention is intended to propose a kind of multi-phase fluid distributed architecture for shell and tube reactor, to solve prior art Problems existing.
For achieving the above object, the technical scheme of the invention is achieved in that
A kind of multi-phase fluid distributed architecture for shell and tube reactor, described multi-phase fluid distributed architecture is fixedly arranged on the upper perforated plate of described shell and tube reactor, comprise liquid distribution assembly and comprise block, sleeve pipe and circular plate washer, described circular baffle plate is embedded with the sleeve pipe that several upwards extend, described sleeve bottom runs through described circular baffle plate, and concordant with described circular baffle plate lower surface, described block covers above described sleeve pipe, and leaves gap with described sleeve pipe upper surface;
Preferably, the tubulation one_to_one corresponding of described sleeve pipe and described shell-and-tube reactor, corresponding often group sleeve pipe is arranged with tubulation is concentric, and the external diameter of sleeve pipe is less than reactor tubulation internal diameter;
Preferably, described liquid distribution assembly is provided with liquid distribution passage, and the set-up mode of described liquid distribution passage the sleeve outer circular baffle plate corresponding with the annular region that reactor tubulation internal diameter surrounds all offers some dispensing orifices or circumference offers some dispensing orifices on described sleeve side walls often organizing.
Preferably, described multi-phase fluid distributed architecture also comprises screen cloth, and described screen cloth is between described liquid distribution assembly and described upper perforated plate.
Preferably, described screen cloth is the screen cloth that at least one deck aperture is identical or different, better to prevent the loosening outflow of catalyst.
Preferably, described dispensing orifice is uniformly distributed in described circular baffle plate along the peripheral circumference of described sleeve pipe or is uniformly distributed in described sleeve side walls circumference.
Preferably, the shape of described sleeve pipe is similar to reactor tubulation shape, and be circular casing, the setting height of all sleeve pipes is identical, and higher than the boundary of multi-phase fluid.
Preferably, described block shape is taper shape, wedge shape, cylinder hat or square box shaped.Said structure need ensure that this block is installed rear circular casing by the complete covering of block, can ensure that block is being positioned at the hole or passage that can not pass through for fluid the above position of circular casing upper surface simultaneously.
Preferably, described block shape is wedge shape or square box shaped block, and several blocks be on same straight line are joined together to form the inner bar shaped block body structure be communicated with.
Preferably, the quantity of described dispensing orifice is 1 ~ 20, wherein preferably 1 ~ 10.
Preferably, described liquid distribution structure is directly connected with reactor upper perforated plate, and connected mode is one or more combinations in screw thread, welding or bonding mode, wherein preferred screw thread.
Preferably, conveniently operate and assemble, described circular baffle plate, described screen cloth can be designed to all identical shape with the shape of described reactor upper perforated plate with area, and described circular baffle plate and screen cloth also can be formed in one or the circular configuration of assembled formation.
Relative to prior art, the multi-phase fluid distributed architecture of the shell and tube reactor described in the invention has following advantage:
The present invention can efficiently, high uniformity the reaction feed of liquid phase of not dissolving each other containing two and two or more is assigned in every root tubulation of shell and tube reactor, realization response process even, is conducive to the difference reducing reaction effect between axial-temperature gradient and tubulation.Simultaneously the present invention propose the use of thick liquid distribution trough, feed operation under shell and tube reactor or the loosening loss of catalyst granules in feed liquor exhaust process from the bottom up can be prevented.
Accompanying drawing explanation
The accompanying drawing of the part of formation the invention is used to provide the further understanding to the invention, and the schematic description and description of the invention, for explaining the invention, does not form the improper restriction to the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the invention embodiment 1;
Fig. 2 is the structural representation of the invention embodiment 2;
Fig. 3 is the top view of the invention embodiment 2 example.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the invention and the feature in embodiment can combine mutually.
In the description of the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the invention can not be interpreted as.In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, one or more these features can be expressed or impliedly be comprised to the feature being limited with " first ", " second " etc.In the description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In the description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the invention can be understood by concrete condition.
The invention is described in detail below in conjunction with embodiment and accompanying drawing thereof.
Embodiment 1
A kind of multi-phase fluid distributed architecture for shell and tube reactor, as shown in Figure 1, described multi-phase fluid distributed architecture is fixedly arranged on the upper perforated plate 5 of described shell and tube reactor, comprise screen cloth 4 and liquid distribution assembly, described screen cloth 4 is between liquid distribution assembly and reactor upper perforated plate 5, liquid distribution assembly comprises block 1, (described sleeve pipe is similar to reactor tubulation shape for sleeve pipe 2, be round tube, the setting height of all sleeve pipes is identical, and higher than the boundary of multi-phase fluid) and circular plate washer 3, described circular baffle plate 3 is embedded with the sleeve pipe 2 that several upwards extend, described circular baffle plate is run through bottom described sleeve pipe 2, and it is concordant with described circular baffle plate 3 lower surface, described block 1 covers above described sleeve pipe 2, and leave gap with described sleeve pipe 2 upper surface and (block a shot as taper is blocked a shot in Fig. 1, and as shown in Figure 3, several blocks be on same straight line are joined together to form the inner bar shaped block body structure be communicated with, block 1 needs after installing to ensure that circular casing 2 can by the complete covering of block, can ensure that the fluid passage that liquid can be formed by block bottom and circular casing 2 upper surface enters circular casing 2 inside) simultaneously,
Tubulation 7 one_to_one corresponding of described circular casing 2 and described shell-and-tube reactor, corresponding often group circular casing 2 is arranged (being provided with beds 6 in reactor tubulation 7) with reactor tubulation 7 is concentric, and the external diameter of sleeve pipe is less than reactor tubulation internal diameter; The set-up mode of the liquid distribution passage on the assembly of liquid distribution described in the present embodiment all offers 10 ~ 25 dispensing orifices 8 often organizing in the sleeve outer circular baffle plate 3 corresponding with the annular region that reactor tubulation internal diameter surrounds, and described dispensing orifice 8 is uniformly distributed along the peripheral circumference of described sleeve pipe in described circular baffle plate.
Screen cloth in embodiment is individual layer screen cloth, to prevent the loosening outflow of urging the catalyst in reactor tubulation 7 in beds 6.
Circular baffle plate 3 described in said structure, described screen cloth 4 are all identical with area with the shape of described reactor upper perforated plate 5, and described liquid distribution structure is connected with reactor upper perforated plate 5 with screen cloth 4 is all direct, connected mode is for being threaded, and said structure and reactor wall 9 are tightly connected.
The specific works process of the present embodiment is: after multi-phase fluid enters reactor by feed pipe, because density contrast forms boundary, shown in the dotted line seeing in figure lower triangular arrowheads indication; Heavy phase as indicated in the figures by an arrow afterwards, participates in reaction by the dispensing orifice 8 inflow reactor tubulation 7 that circular baffle plate 3 is offered, and enters reactor tubulation 7 and participate in reaction after gently flowing into sleeve pipe by the gap between block 1 and circular casing 2.
Embodiment 2
As Fig. 2, shown in 3, for the structural representation of the second embodiment of the present invention, itself and embodiment 1 difference are: the set-up mode of the liquid distribution passage on described liquid distribution assembly is that circumference offers some equally distributed dispensing orifices on described sleeve side walls, the number of openings is each sleeve pipe has 10 dispensing orifices 8, adopts the square box shaped block of disjunctor shape simultaneously.
The specific works process of the multi-phase fluid distributed architecture for shell and tube reactor of the present embodiment is:
After multi-phase fluid enters reactor by feed pipe, because density contrast forms boundary, shown in the dotted line seeing in figure lower triangular arrowheads indication.Heavy phase as indicated in the figures by an arrow afterwards, the some equally distributed dispensing orifice 8 inflow reactor tubulation offered by circumference on circular casing 2 sidewall participates in reaction, enters reactor tubulation and participate in reaction after gently flowing into sleeve pipe by the gap between block 1 and circular casing 2.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the invention.
Claims (9)
1. the multi-phase fluid distributed architecture for shell and tube reactor, described multi-phase fluid distributed architecture is fixedly arranged on the upper perforated plate of described shell and tube reactor, it is characterized in that: comprise liquid distribution assembly and comprise block, sleeve pipe and circular plate washer, described circular baffle plate is embedded with the sleeve pipe that several upwards extend, described sleeve bottom runs through described circular baffle plate, and concordant with described circular baffle plate lower surface, described block covers above described sleeve pipe, and leaves gap with described sleeve pipe upper surface;
The tubulation one_to_one corresponding of described sleeve pipe and described shell-and-tube reactor, corresponding often group sleeve pipe is arranged with tubulation is concentric, and the external diameter of sleeve pipe is less than reactor tubulation internal diameter;
Described liquid distribution assembly is provided with liquid distribution passage, and the set-up mode of described liquid distribution passage the sleeve outer circular baffle plate corresponding with the annular region that reactor tubulation internal diameter surrounds all offers some dispensing orifices or circumference offers some dispensing orifices on described sleeve side walls often organizing.
2. the multi-phase fluid distributed architecture for shell and tube reactor according to claim 1, it is characterized in that: described multi-phase fluid distributed architecture also comprises screen cloth, described screen cloth is between described liquid distribution assembly and described upper perforated plate.
3. the multi-phase fluid distributed architecture for shell and tube reactor according to claim 2, is characterized in that: described screen cloth is the screen cloth that at least one deck aperture is identical or different, better to prevent the loosening outflow of catalyst.
4. the multi-phase fluid distributed architecture for shell and tube reactor according to any one of claim 1-3, is characterized in that: described dispensing orifice is uniformly distributed in described circular baffle plate along the peripheral circumference of described sleeve pipe or is uniformly distributed in described sleeve side walls circumference.
5. the multi-phase fluid distributed architecture for shell and tube reactor according to any one of claim 1-3, it is characterized in that: the shape of described sleeve pipe is similar to reactor tubulation shape, be circular casing, the setting height of all sleeve pipes is identical, and higher than the boundary of multi-phase fluid.
6. the multi-phase fluid distributed architecture for shell and tube reactor according to any one of claim 1-3, is characterized in that: described block shape is taper shape, wedge shape, cylinder hat or square box shaped.
7. the multi-phase fluid distributed architecture for shell and tube reactor according to any one of claim 6, it is characterized in that: described block shape is wedge shape or square box shaped block, and several blocks be on same straight line are joined together to form the inner bar shaped block body structure be communicated with.
8. the multi-phase fluid distributed architecture for shell and tube reactor according to claim 1, is characterized in that: the quantity of described dispensing orifice is 1 ~ 20.
9. the multi-phase fluid distributed architecture for shell and tube reactor according to any one of claim 1-3, it is characterized in that: described liquid distribution structure is directly connected with reactor upper perforated plate, connected mode is one or more combinations in screw thread, welding or bonding mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510881281.0A CN105363388B (en) | 2015-12-02 | 2015-12-02 | A kind of multi-phase fluid distributed architecture for shell and tube reactor |
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| CN201510881281.0A CN105363388B (en) | 2015-12-02 | 2015-12-02 | A kind of multi-phase fluid distributed architecture for shell and tube reactor |
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| CN105363388A true CN105363388A (en) | 2016-03-02 |
| CN105363388B CN105363388B (en) | 2018-01-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014663A (en) * | 2017-11-01 | 2018-05-11 | 中石化广州工程有限公司 | Liquefied natural gas Liqiud-gas mixing device |
| CN110183370A (en) * | 2019-06-28 | 2019-08-30 | 迈奇化学股份有限公司 | A kind of industrial process of N- ethyl pyrrolidone |
| CN113083203A (en) * | 2021-04-07 | 2021-07-09 | 北京泽华化学工程有限公司 | Tubular container |
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| CN103801109A (en) * | 2014-03-03 | 2014-05-21 | 南京德邦金属装备工程股份有限公司 | Light and heavy phase redistribution device for liquid-liquid extraction packed tower |
| CN203971913U (en) * | 2014-05-16 | 2014-12-03 | 赛鼎工程有限公司 | A kind of liquid distribution trough for shell and tube reactor |
| CN204234070U (en) * | 2014-10-09 | 2015-04-01 | 天津奥展兴达化工技术有限公司 | A kind of liquid-equal flow reactor of liquid catalysis |
| CN205269604U (en) * | 2015-12-02 | 2016-06-01 | 中国天辰工程有限公司 | A heterogeneous liquid distributor structure for tubular reactor |
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2015
- 2015-12-02 CN CN201510881281.0A patent/CN105363388B/en active Active
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| GB2186209A (en) * | 1986-01-18 | 1987-08-12 | Metallgesellschaft Ag | A tubular reactor and process for supplying granular catalyst material and/or liquid into the tubes of the tubular reactor |
| CN1657151A (en) * | 2004-12-14 | 2005-08-24 | 天津大学 | Uniform phase distribution device in liquid contained multiphase fluidized system |
| US20080241021A1 (en) * | 2005-10-20 | 2008-10-02 | Basf Se | Distribution Device for a Gas-Liquid Phase Mixture for Apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014663A (en) * | 2017-11-01 | 2018-05-11 | 中石化广州工程有限公司 | Liquefied natural gas Liqiud-gas mixing device |
| CN108014663B (en) * | 2017-11-01 | 2020-10-23 | 中石化广州工程有限公司 | Liquefied natural gas-liquid mixing device |
| CN110183370A (en) * | 2019-06-28 | 2019-08-30 | 迈奇化学股份有限公司 | A kind of industrial process of N- ethyl pyrrolidone |
| CN110183370B (en) * | 2019-06-28 | 2022-04-29 | 迈奇化学股份有限公司 | Industrial production method of N-ethyl pyrrolidone |
| CN113083203A (en) * | 2021-04-07 | 2021-07-09 | 北京泽华化学工程有限公司 | Tubular container |
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| Publication number | Publication date |
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| CN105363388B (en) | 2018-01-26 |
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Effective date of registration: 20181224 Address after: No. 1 Jingjin Road, Beichen District, Tianjin City, 300400 Co-patentee after: FUJIAN TIANCHEN YAOLONG NEW MATERIAL LTD. Patentee after: China Tiancheng Engineering Corp. Co-patentee after: Tianjin Tianchen Green Energy Engineering Technology Research & Development Co., Ltd. Address before: No. 1 Jingjin Road, Beichen District, Tianjin City, 300400 Co-patentee before: Tianjin Tianchen Green Energy Engineering Technology Research & Development Co., Ltd. Patentee before: China Tiancheng Engineering Corp. |