CN109200952B - Gas-liquid mixing assembly and catalyst bed layer structure for reactor - Google Patents
Gas-liquid mixing assembly and catalyst bed layer structure for reactor Download PDFInfo
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- CN109200952B CN109200952B CN201811358891.2A CN201811358891A CN109200952B CN 109200952 B CN109200952 B CN 109200952B CN 201811358891 A CN201811358891 A CN 201811358891A CN 109200952 B CN109200952 B CN 109200952B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
- B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0278—Feeding reactive fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
Abstract
The invention provides a gas-liquid mixing component and a catalyst bed layer structure for a reactor, and relates to the technical field of reactors. The gas-liquid mixing assembly comprises a shell, wherein a liquid inlet pipe and an impact mixing plate for receiving gas-liquid materials are arranged on the shell, a liquid outlet of the liquid inlet pipe is positioned in an inner cavity of the shell, and the impact mixing plate is positioned below the liquid outlet of the liquid inlet pipe; the impact mixing plate is provided with a plurality of injection pipe groups, each injection pipe group comprises two or more than two mixed injection pipes with opposite discharge ports, a top feed port of each mixed injection pipe is positioned above the impact mixing plate, and a bottom discharge port of each mixed injection pipe is positioned below the impact mixing plate. The catalyst bed layer structure comprises the gas-liquid mixing component, and the uniformity of gas-liquid mixing can be effectively improved through the gas-liquid mixing component; for reactors with the same internal volume, the use of the structure of the present invention means that the packing volume of the solid catalyst can be increased.
Description
Technical Field
The invention relates to the technical field of reactors, in particular to a gas-liquid mixing assembly and a catalyst bed layer structure for a reactor.
Background
In petroleum refining and petrochemical industry, hydrogenation reaction is very common, and the application is more and more extensive along with the requirement of oil upgrading, such as hydrocracking, hydrofining and the like. The hydrogenation reaction belongs to exothermic reaction, and the temperature of reactants needs to be controlled in the reaction process, so that the activity reduction (namely the temperature runaway phenomenon) of the catalyst caused by the rapid temperature rise of a catalyst bed layer is prevented. In industrial design, the catalyst in a fixed bed hydrogenation reactor is generally divided into a plurality of beds, and cold hydrogen is supplemented between two adjacent catalyst beds, so that the temperature of hot reactants is reduced on one hand, and hydrogen consumed in the reactor is supplemented on the other hand. In order to realize the sufficient mixing of the cold material flow and the hot material flow and the uniform distribution of the cold material flow and the hot material flow to the next catalyst bed, a quenching mixer which is an internal component of the hydrogenation reactor and has a rapid mixing function is required to be arranged between the two adjacent catalyst beds. The performance of the quench mixer was evaluated mainly from two aspects, mixing effect and pressure drop. Besides the fluid mechanical functions of mixing and distribution, the quenching mixer should occupy the lowest possible height of space, thereby reducing the equipment investment. In order to enhance the mixing effect, the structure design of the quenching mixer generally adopts the mechanisms of throttling, collision and rotational flow; can be divided into two categories according to the characteristics of the integral structure: box-type structures and tube-type structures, and have successful industrial application examples.
With the development of large-scale devices, after the traditional box-type structure and tubular structure are designed and calculated according to the hydrodynamic indexes, the axial size is larger, the effective space of the reactor is occupied, and the equipment investment is increased. The flattening design concept of the quenching box is provided by part of design and research units in China, and a novel flattening quenching box is also provided, but the traditional structure and the mixing mode are not fundamentally changed. Foreign SHELL and IFP companies have introduced quench mixing systems with simple structures, and have made a great deal of improvements mainly from cold hydrogen pipes and boxes, have changed the traditional calculation method, can suitably reduce quench mixing systems, and are favorable to the development of the large-scale equipment.
Disclosure of Invention
The invention aims to provide a gas-liquid mixing assembly, aiming at improving the mixing effect of gas and liquid.
Another object of the present invention is to provide a catalyst bed structure for a reactor, which can make the gas and liquid more sufficiently mixed in the catalyst bed.
The invention is realized by the following steps:
a gas-liquid mixing component comprises a shell, wherein a liquid inlet pipe and an impact mixing plate for receiving gas-liquid materials are arranged on the shell, a liquid outlet of the liquid inlet pipe is positioned in an inner cavity of the shell, and the impact mixing plate is positioned below the liquid outlet of the liquid inlet pipe;
the impact mixing plate is provided with a plurality of injection pipe groups, each injection pipe group comprises two or more than two mixed injection pipes with opposite discharge ports, a top feed port of each mixed injection pipe is positioned above the impact mixing plate, and a bottom discharge port of each mixed injection pipe is positioned below the impact mixing plate.
Further, in a preferred embodiment of the present invention, the housing is further provided with a liquid receiving buffer plate, and the liquid receiving buffer plate is located below the discharge port at the bottom of the mixing and injecting pipe.
Further, in a preferred embodiment of the present invention, the impingement mixing plate includes a central region corresponding to one jet stack and at least one peripheral region, each peripheral region being disposed about the central region and each peripheral region corresponding to a plurality of jet stacks.
Further, in a preferred embodiment of the present invention, the injection tube set corresponding to the central region includes three or more mixing injection tubes with opposite discharge ports, and the injection tube set corresponding to the peripheral region includes two mixing injection tubes with opposite discharge ports.
Further, in a preferred embodiment of the present invention, the central area corresponds to a central liquid receiving plate, each peripheral area corresponds to a peripheral liquid receiving plate, the central liquid receiving plate is disc-shaped, the peripheral liquid receiving plates are circular rings with groove-shaped cross sections, and the central liquid receiving plate is located in the cavity of the peripheral liquid receiving plate.
Further, in the preferred embodiment of the present invention, the mixing and injecting pipe is L-shaped, and the aperture of the discharge port of the mixing and injecting pipe is smaller than the aperture of the feed port.
Further, in a preferred embodiment of the present invention, the liquid inlet pipe extends into the inner cavity of the housing from the side wall of the housing, and the liquid outlet of the liquid inlet pipe is located above the impingement mixing plate.
A catalyst bed structure for a reactor comprises a plurality of catalyst bed main bodies and the gas-liquid mixing component, wherein the gas-liquid mixing component is positioned between two adjacent catalyst bed main bodies.
Further, in a preferred embodiment of the present invention, a liquid receiving buffer plate and a gas-liquid distributor are further disposed between two adjacent catalyst bed layer main bodies, the gas-liquid distributor and the liquid receiving buffer plate are both located below the mixing injection pipe, and the liquid receiving buffer plate is located between the gas-liquid distributor and the injection pipe.
Further, in a preferred embodiment of the present invention, a first ceramic ball layer and a second ceramic ball layer are further disposed between two adjacent catalyst bed layer bodies, the first ceramic ball layer is located above the liquid inlet pipe, and the second ceramic ball layer is located below the gas-liquid distributor.
The invention has the beneficial effects that: according to the gas-liquid mixing component obtained through the design, a gas-liquid mixture entering the shell and a liquid material output from the liquid inlet pipe both fall onto the impact mixing plate, the gas-liquid mixture enters the injection pipe group on the impact mixing plate, the gas-liquid mixture is impacted when being sprayed out from the two opposite mixing injection pipes, the gas-liquid mixing effect is enhanced through the impact effect, and the overall height is reduced through the enhancement effect of impact flow.
The invention also provides a catalyst bed layer structure for the reactor, the gas-liquid mixing component is positioned between two adjacent catalyst bed layer main bodies, and the uniformity of gas-liquid mixing can be effectively improved through the gas-liquid mixing component in the process of material transfer between the two adjacent catalyst bed layer main bodies; for reactors with the same internal volume, the use of the structure of the present invention means that the packing volume of the solid catalyst can be increased.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a catalyst bed structure for a reactor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first configuration of the gas-liquid mixing assembly of FIG. 1;
FIG. 3 is a second schematic illustration of the gas-liquid mixing assembly of FIG. 1;
FIG. 4 is a perspective view of the gas-liquid mixing assembly of FIG. 2.
Icon: 10-catalyst bed structure for a reactor; 100-a gas-liquid mixing assembly; 200-a catalyst bed body; 110-a housing; 120-liquid inlet pipe; 130-impingement mixing plate; 131-a central region; 132-a peripheral region; 140-a jet stack; 141-mixing jet pipe; 150-liquid receiving buffer plate; 151-central liquid receiving plate; 152-peripheral liquid receiving plate; 160-gas-liquid distributor; 171-a first ceramic ball layer; 172-second ceramic ball layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1-4, an embodiment of the present invention provides a gas-liquid mixing assembly 100, which includes a casing 110, and the casing 110 is provided with a liquid inlet pipe 120 and an impact mixing plate 130 for receiving gas-liquid materials. The gas-liquid mixture enters from the top end of the shell 110 and then is mixed with the liquid entering from the liquid inlet pipe 120 in an impact mixing plate 130 in an impact mode.
Specifically, for processes that generate heat from reactions such as hydrogenation, inlet line 120 may be used to transport lower temperature materials such as cold hydrogen, a mixed fluid of liquid hydrocarbons and gaseous hydrogen, which flows downward under the force of gravity. The size of the impingement mixing plate 130 is larger than the size of the impingement mixing plate corresponding to the inward direction of the casing 110, so as to prevent the impingement mixing plate 130 from leaking liquid, and the gas-liquid mixture enters the jet pipe group 140 on the impingement mixing plate 130 and is jetted from the outlet of the mixing jet pipe 141.
Specifically, the liquid outlet of the liquid inlet pipe 120 is located in the inner cavity of the housing 110, and the impingement mixing plate 130 is located below the liquid outlet of the liquid inlet pipe 120; a plurality of injection tube sets 140 are distributed on the impingement mixing plate 130, each injection tube set 140 comprises two or more mixing injection tubes 141 with opposite discharge ports, the top feed ports of the mixing injection tubes 141 are located above the impingement mixing plate 130, and the bottom discharge ports of the mixing injection tubes 141 are located below the impingement mixing plate 130.
It should be noted that, in the gas-liquid mixing assembly 100, the gas-liquid mixture entering the casing 110 and the liquid material output from the liquid inlet pipe 120 both fall onto the impact mixing plate 130, the gas-liquid mixture enters the injection pipe group 140 on the impact mixing plate 130, and the gas-liquid mixture is impacted when being ejected from the two opposite mixing injection pipes 141, so that the gas-liquid mixing effect is enhanced by the impact effect, and the overall height is reduced by the enhancement effect of the impact flow. The whole design idea is that the mass transfer between gas and liquid is strengthened by means of the impinging stream theory of a gas-liquid mixing system, the structure of the mixing system is simplified by improving the mass transfer efficiency, and the axial dimension is reduced.
It should be added that the relative arrangement of the mixing injection pipes 141 in each injection pipe group 140 means that the material ejected from the discharge port of the mixing injection pipe 141 and the material ejected from the other opposite mixing injection pipe 141 collide with each other, so as to enhance the gas-liquid mixing effect by using the impact effect.
Specifically, the size of the housing 110 is not limited, and can be designed according to the process requirements, such as a diameter of 1-10 meters and a height of 3-20 meters. Liquid inlet tube 120 extends into the interior cavity of housing 110 from the sidewall of housing 110, and the liquid outlet of liquid inlet tube 120 is located above impingement mixing plate 130.
Preferably, the mixing and injecting pipe 141 is L-shaped, and the aperture of the discharge port of the mixing and injecting pipe 141 is smaller than the aperture of the feed port. The diameter reducing effect at the pipe orifice of the mixing injection pipe 141 is utilized to output the materials at a higher speed, so that the impact process is more violent, and the gas-liquid mixing effect is better.
Further, a liquid receiving buffer plate 150 is disposed on the housing 110, and the liquid receiving buffer plate 150 is located below the bottom discharge port of the mixing and injecting pipe 141. The liquid receiving buffer plate 150 may be an integral groove-shaped structure for receiving the uniformly mixed materials to perform a buffering function.
Further, impingement mixing plate 130 includes a central region 131 and at least one peripheral region 132, central region 131 corresponding to one jet tube set 140, each peripheral region 132 disposed about central region 131, and each peripheral region 132 corresponding to a plurality of jet tube sets 140.
In some embodiments, impingement mixing plate 130 is a circular plate, the impingement area is determined according to the diameter of the reactor, and may be divided into a central area 131 and peripheral areas 132, and the number of peripheral areas 132 may be set according to the diameter of the reactor. The materials ejected from the mixing ejection tubes 141 of one ejection tube group 140 provided in the central region 131 all collide with each other; peripheral region 132 surrounds central region 131, and one jet stack 140 in this region generally includes two opposing mixing jet stacks 141. That is, the injection tube group 140 corresponding to the central region 131 includes three or more mixing injection tubes 141 having opposite discharge ports, and the injection tube group 140 corresponding to the peripheral region 132 includes two mixing injection tubes 141 having opposite discharge ports.
For ease of maintenance, the impingement mixing plates 130 may be segmented according to the beam conditions, primarily to provide trapped mixing. The impingement mixing plate 130 has a height of the upper portion of typically 50-200mm and a height of the lower portion of typically 50-200 mm.
Further, the central region 131 corresponds to a central liquid receiving plate 151, each peripheral region 132 corresponds to a peripheral liquid receiving plate 152, the central liquid receiving plate 151 is disc-shaped, the peripheral liquid receiving plates 152 are circular rings with groove-shaped cross sections, and the central liquid receiving plate 151 is located in a cavity of the peripheral liquid receiving plates 152. Thus, the liquid-receiving buffer plate 150 is disposed corresponding to the division of the area in the impingement mixing plate 130.
The embodiment of the present invention further provides a catalyst bed structure 10 for a reactor, which includes a plurality of catalyst bed main bodies 200 and the gas-liquid mixing assembly 100, where the gas-liquid mixing assembly 100 is located between two adjacent catalyst bed main bodies 200. In the process of transferring materials between two adjacent catalyst bed layers 200, the gas-liquid mixing component 100 can effectively improve the uniformity of gas-liquid mixing; for reactors with the same internal volume, the use of the structure of the present invention means that the packing volume of the solid catalyst can be increased.
Specifically, the catalyst bed body 200 is of a conventional structure, and the solid catalyst is packed in a plurality of beds, typically with bar-shaped or spherical particles between two screens.
Further, a liquid receiving buffer plate 150 and a gas-liquid distributor 160 are further disposed between two adjacent catalyst bed layer main bodies 200, the gas-liquid distributor 160 and the liquid receiving buffer plate 150 are both located below the mixing injection pipe 141, and the liquid receiving buffer plate 150 is located between the gas-liquid distributor 160 and the injection pipe. Specifically, the gas-liquid distributor 160 is conventional in the art, and has various forms of structures, and a tubular gas-liquid distributor may be preferred. The tubular gas-liquid distributor has a plurality of distribution points in unit area and good uniform distribution performance, can fully ensure the mixing and uniform distribution effects of gas and liquid, and can also adopt a bubble cap gas-liquid distributor and the like.
Further, a first ceramic ball layer 171 and a second ceramic ball layer 172 are further arranged between the two adjacent catalyst bed layer main bodies 200, the first ceramic ball layer 171 is located above the liquid inlet pipe 120, and the second ceramic ball layer 172 is located below the gas-liquid distributor 160. First and second ceramic ball layers 171 and 172 are positioned above and below the catalyst bed, and the bed is typically supported by beams and screens or grids.
The operation of the catalyst bed structure 10 for the reactor is illustrated by way of example of a catalytic hydrogenation reaction. Above the quenching mixing system, the mixture flow composed of the hot reactant from the previous catalyst bed and the injected cold hydrogen flows downwards, the gas-liquid two-phase flow collides and is mixed near the liquid inlet pipe 120, the mixture flow collides and is mixed violently at the mixing hole on the impact mixing plate 130, then the gas-liquid mixture is accelerated by the mixing injection pipe 141 to collide with each other, then the mixture is buffered by the liquid receiving buffer plate 150 and is sprayed on the gas-liquid distribution plate, then the mixture flow is shaped and mixed by the gas-liquid distributor 160 and is further distributed above the next ceramic ball bed, and the whole quenching mixing process is completed.
In summary, according to the gas-liquid mixing assembly provided by the invention, the gas-liquid mixture entering the housing and the liquid material output from the liquid inlet pipe both fall onto the impact mixing plate, the gas-liquid mixture enters the injection pipe group on the impact mixing plate, the gas-liquid mixture is impacted when being sprayed out from the two opposite mixing injection pipes, the gas-liquid mixing effect is enhanced by utilizing the impact effect, and the overall height is reduced by the enhancement effect of the impact flow.
According to the catalyst bed structure for the reactor, the gas-liquid mixing component is positioned between the two adjacent catalyst bed main bodies, and the uniformity of gas-liquid mixing can be effectively improved through the gas-liquid mixing component; for reactors with the same internal volume, the use of the structure of the present invention means that the packing volume of the solid catalyst can be increased.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A gas-liquid mixing assembly is characterized by comprising a shell, wherein a liquid inlet pipe and an impact mixing plate for receiving gas-liquid materials are arranged on the shell, a liquid outlet of the liquid inlet pipe is positioned in an inner cavity of the shell, and the impact mixing plate is positioned below the liquid outlet of the liquid inlet pipe;
a plurality of injection pipe groups are distributed on the impact mixing plate, each injection pipe group comprises more than two mixed injection pipes with opposite discharge ports, a top feed port of each mixed injection pipe is positioned above the impact mixing plate, and a bottom discharge port of each mixed injection pipe is positioned below the impact mixing plate;
the impingement mixing plate comprises a central region corresponding to one of the jet stack and at least one peripheral region, each peripheral region disposed about the central region and each corresponding to a plurality of jet stack;
the shell is also provided with a liquid receiving buffer plate which is positioned below the discharge hole at the bottom of the mixed injection pipe;
the central area corresponds to a central liquid receiving plate, and each peripheral area corresponds to a peripheral liquid receiving plate.
2. The gas-liquid mixing assembly according to claim 1, wherein the jet tube group corresponding to the central region includes three or more of the mixing jet tubes having opposite discharge ports, and the jet tube group corresponding to the peripheral region includes two of the mixing jet tubes having opposite discharge ports.
3. The gas-liquid mixing assembly of claim 2, wherein the central liquid-receiving plate is disc-shaped and the peripheral liquid-receiving plate is a ring having a groove-shaped cross-section, the central liquid-receiving plate being located in a cavity of the peripheral liquid-receiving plate.
4. The gas-liquid mixing assembly according to any one of claims 1 to 3, wherein the mixing and injecting pipe is L-shaped, and the caliber of the discharge port of the mixing and injecting pipe is smaller than the caliber of the feed port.
5. The gas-liquid mixing assembly of claim 1, wherein the liquid inlet tube extends from a sidewall of the housing into the interior cavity of the housing, and the liquid outlet of the liquid inlet tube is located above the impingement mixing plate.
6. A catalyst bed structure for a reactor, comprising a plurality of catalyst bed bodies and a gas-liquid mixing assembly according to any one of claims 1 to 5, the gas-liquid mixing assembly being located between two adjacent catalyst bed bodies.
7. The catalyst bed structure for the reactor as claimed in claim 6, wherein a liquid receiving buffer plate and a gas-liquid distributor are further disposed between two adjacent catalyst bed bodies, the gas-liquid distributor and the liquid receiving buffer plate are both located below the mixing and spraying pipe, and the liquid receiving buffer plate is located between the gas-liquid distributor and the spraying pipe.
8. The catalyst bed structure for the reactor according to claim 7, wherein a first ceramic ball layer and a second ceramic ball layer are further disposed between two adjacent catalyst bed bodies, the first ceramic ball layer is located above the liquid inlet pipe, and the second ceramic ball layer is located below the gas-liquid distributor.
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| CN111558339B (en) * | 2020-05-25 | 2023-03-31 | 中国石油化工股份有限公司 | Gas-liquid mixing distribution system |
| CN113952895A (en) * | 2021-11-01 | 2022-01-21 | 聊城市鲁西化工工程设计有限责任公司 | Continuous catalytic hydrogenation system and process for hydroxypivalaldehyde |
| CN116212776A (en) * | 2023-04-13 | 2023-06-06 | 江苏正丹化学工业股份有限公司 | Micro-nano gas-liquid reaction device for liquid phase air oxidation of pseudocumene |
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