CN215429072U

CN215429072U - Hydroformylation cross-flow mixing reactor

Info

Publication number: CN215429072U
Application number: CN202120416693.8U
Authority: CN
Inventors: 孙清; 赵陆海波; 唐志永
Original assignee: Shanghai Ruicheng Carbon Energy Technology Co ltd
Current assignee: Shanghai Ruicheng Carbon Energy Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-01-07
Anticipated expiration: 2031-02-25

Abstract

The utility model relates to the technical field of olefin hydroformylation, in particular to a hydroformylation cross-flow mixing reactor, wherein a turbulent flow device comprises: the device comprises a reaction kettle and a turbulence cylinder, wherein the turbulence cylinder is arranged in the reaction kettle; a plurality of layers of external turbulence plates are arranged on the inner wall of the reaction kettle; a plurality of layers of inner turbulence plates are arranged on the outer wall of the turbulence cylinder; and the outer flow disturbing plates and the inner flow disturbing plates are arranged in a vertically staggered manner. The inner side of the inner turbulent flow plate is provided with a rotating wheel for stirring air flow; the outside of interior spoiler is provided with a plurality of archs that are used for the bubble breakage. The hydroformylation cross-flow mixing reactor improves the mass transfer efficiency among materials of each phase to carry out bubble breakage, strengthens the gas-liquid mixing in a reaction kettle on the premise of no moving part, improves the reaction rate of hydroformylation of olefins and the mixing uniformity in the reaction kettle, and reduces the possibility of overheating occurrence of partial reaction.

Description

Hydroformylation cross-flow mixing reactor

Technical Field

The utility model relates to the technical field of olefin hydroformylation, in particular to a hydroformylation cross-flow mixing reactor.

Background

At present, aldehydes are used as important chemical products and chemical raw materials, are mainly used for generating chemical intermediates such as acid, alcohol, ketoxime, olefine aldehyde and the like and high molecular monomers, and have wide application in the industries such as medicines, pesticide raw materials, engineering plastics, coatings, light textile auxiliaries and the like. In recent years, the demand of aldehyde products in domestic and foreign markets is still increasing.

At present, in the industrial hydroformylation technology, under the condition of maintaining a certain temperature and pressure, raw materials of olefin and synthesis gas H are in a noble metal complex catalyst system₂the/CO enters a catalyst solution in the reactor and reacts in a liquid phase to generate aldehyde or alcohol. The hydroformylation reactor requires good gas-liquid two-phase behavior, the traditional stirred tank reactor is complex in design and low in energy conversion efficiency, and meanwhile, moving parts cause high maintenance cost and high sealing requirement on the reactor; the bubble column reactor has poor mixing uniformity, bubbles blown out by the gas distributor are not uniformly distributed in the reactor, and the bubble column reactor has large size and poor mass transfer performance. In view of this, we propose a hydroformylation cross-flow mixing reactor.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide a hydroformylation cross-flow mixing reactor to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a hydroformylation cross-flow mixing reactor comprising: the device comprises a reaction kettle and a turbulence cylinder, wherein the turbulence cylinder is arranged in the reaction kettle;

a plurality of layers of external turbulence plates are arranged on the inner wall of the reaction kettle;

a plurality of layers of inner turbulence plates are arranged on the outer wall of the turbulence cylinder;

and the outer flow disturbing plates and the inner flow disturbing plates are arranged in a vertically staggered manner.

Preferably, the top of the turbulence cylinder is provided with a feeding pipe for introducing gas-liquid mixed reaction materials;

and a discharge pipe is arranged at the bottom of the reaction kettle and used for discharging reaction products and unreacted materials from the reaction kettle.

Preferably, a baffle is further arranged in the reaction kettle and is arranged under the bottom opening of the turbulence cylinder.

Preferably, the outer turbulence plate and the inner wall of the reaction kettle are obliquely arranged;

the inner turbulence plate and the outer wall of the turbulence cylinder are arranged in an inclined mode.

Preferably, a rotating wheel for stirring air flow is arranged on the inner side of the inner turbulent flow plate;

the outside of interior spoiler is provided with a plurality of archs that are used for the bubble breakage.

Preferably, the rotating wheel is provided with a plurality of fan blades;

the protrusion is hemispherical, and the outer surface of the hemispherical protrusion is pointed.

Compared with the prior art, the utility model has the beneficial effects that: according to the hydroformylation cross-flow mixing reactor, on the premise of no moving part, the gas-liquid mixing in the reactor is enhanced by using the multilayer spoilers in the reactor, large bubbles in the reactor are broken into micro bubbles under the action of the cross-flow spoilers, the contact area between gas-liquid two phases is increased, the inter-phase mass transfer efficiency of the reaction is improved, and the reaction efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an internal cross-sectional view of the overall structure of the present invention;

FIG. 3 is a top view of the internal structure of the present invention;

FIG. 4 is a schematic view of the internal structure of a reaction vessel according to the present invention;

FIG. 5 is a schematic structural view of a baffle cylinder according to the present invention;

fig. 6 is a partial structural schematic view of the inner spoiler in accordance with the present invention.

In the figure: 1. a reaction kettle; 11. an outer spoiler; 12. a discharge pipe; 13. a baffle plate; 2. a turbulence cylinder; 21. an inner spoiler; 22. a feed pipe; 24. a rotating wheel; 241. a fan blade; 25. and (4) protruding.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate. Further, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

A hydroformylation cross-flow mixing reactor, as shown in figures 1-5, comprising: the device comprises a reaction kettle 1 and a turbulence cylinder 2, wherein the turbulence cylinder 2 is arranged in the reaction kettle 1; the inner wall of the reaction kettle 1 is provided with a plurality of layers of outer baffle plates 11; the outer wall of the turbulence cylinder 2 is provided with a plurality of layers of inner turbulence plates 21; and the outer spoiler 11 and the inner spoiler 21 are arranged up and down in a staggered manner. In addition, a feeding pipe 22 is arranged at the top of the turbulence cylinder 2 and is used for introducing gas-liquid mixed reaction materials; the bottom of the reaction kettle 1 is provided with a discharge pipe 12 for discharging reaction products and unreacted materials from the reaction kettle 1. Still be provided with baffle 13 in reation kettle 1, and baffle 13 sets up under turbolator 2 bottom opening. Therefore, the olefin hydrogen formyl reaction gas-liquid mixture is input through the feeding pipe 22 at the top of the turbulence cylinder 2, the length ratio of the feeding pipe 22 extending into the turbulence cylinder 2 is less than half of the height of the turbulence cylinder 2, the gas-liquid mixture is input into the bottom of the reaction kettle 1 through the turbulence cylinder 2 and is baffled to the space between the turbulence cylinder 2 and the inner wall of the reaction kettle 1 through the baffle 13 to be mixed, the inner turbulence plate 21 at the outer wall of the turbulence cylinder 2 has the functions of turbulence and flow guiding, and is matched with the outer turbulence plate 11 on the inner wall of the reaction kettle 1 to break the diffused gas into micro-bubbles to be dispersed in the space, the existence of the inner and outer turbulence plates provides shearing force for the material flowing in the flow field moving direction, generates violent vortex, breaks the large bubbles in the liquid phase into the micro-bubbles to be dispersed in the space, improves the mass transfer efficiency and the reaction rate, the mixed gas enters the turbulence cylinder 2 from the top wall of the reaction kettle 1, form the effect of circulation liquid mixture, the last abundant olefin hydroformylation reaction gas-liquid mixture that mixes is discharged next process through discharging pipe 12, and the gas-liquid mixture reacts abundant at the in-process of diffusion, and gas is broken into the microbubble and is dispersed in the space, increases dwell time, improves olefin hydroformylation reaction efficiency.

In this embodiment, the outer baffle 11 is obliquely arranged with the inner wall of the reaction kettle 1; the inner turbulence plate 21 and the outer wall of the turbulence cylinder 2 are obliquely arranged, and a shearing force is provided in the flow direction of the flow field in an inner and outer cross flow arrangement mode, so that the turbulence degree in the flow field is improved, the mixing in the reactor is enhanced, and the purpose of uniform mixing in the reaction is achieved.

As shown in fig. 6, a rotating wheel 24 for stirring the air flow is disposed on the inner side of the inner baffle plate 21, a plurality of fan blades 241 are disposed on the rotating wheel 24, the rotating wheel 24 is connected to the inner side of the inner baffle plate 21 through a rotating shaft, and the fan blades 241 on the rotating wheel 24 are driven to rotate in the process of air flowing, so that the air flow is uniformly mixed in the reaction kettle 1; the outside of interior spoiler 21 is provided with a plurality of archs 25 that are used for the bubble breakage, and arch 25 is the hemisphere, and hemispherical arch 25 surface is pointed form, under the shearing action of spoiler, has accelerated the broken process of bubble, breaks into the micro-bubble with big bubble, improves the two-phase mass transfer efficiency of hydroformylation gas-liquid.

When the hydroformylation cross-flow mixing reactor is used, the gas-liquid mixture of the hydroformylation reaction of olefin is input through the feed inlet 22 at the top of the turbulence cylinder 2, the length ratio of the feed inlet 22 extending into the turbulence cylinder 2 is less than half of the height of the turbulence cylinder 2, the gas-liquid mixture is input into the bottom of the reaction kettle 1 through the turbulence cylinder 2 and is deflected to the space between the turbulence cylinder 2 and the inner wall of the reaction kettle 1 through the baffle 13 to be mixed, the inner turbulence plate 21 at the outer wall of the turbulence cylinder 2 provides shearing force to strengthen the mixing process, the gas-liquid mixture is matched with the outer turbulence plate 11 on the inner wall of the reaction kettle 1 to break the large bubbles in the reactor into micro bubbles to be dispersed in the reactor to form inner circulation flow under the action of the turbulence cylinder, the final product and the unreacted mixture enter the circulation pipe of the next process through the discharge port 12, the gas is broken into the micro bubbles to be dispersed in the space, and the area of a gas-liquid interface is increased, the mass transfer efficiency of the hydroformylation of the olefin is improved, the residence time of the reaction is increased, and the reaction efficiency of the hydroformylation is improved. The outside of interior spoiler 21 is provided with a plurality of archs 25 that are used for the bubble breakage, and arch 25 is the hemisphere, and hemispherical arch 25 surface is sharp, and arch 25 has accelerateed the bubble breakage process under the shearing action of spoiler, improves alkene hydroformylation reaction efficiency.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A hydroformylation cross-flow mixing reactor, comprising: the device comprises a reaction kettle (1) and a turbulence cylinder (2), wherein the turbulence cylinder (2) is arranged in the reaction kettle (1);

a plurality of layers of outer turbulence plates (11) are arranged on the inner wall of the reaction kettle (1);

the outer wall of the turbulence cylinder (2) is provided with a plurality of layers of inner turbulence plates (21);

and the outer flow disturbing plates (11) and the inner flow disturbing plates (21) are arranged in a vertically staggered manner.

2. The hydroformylation cross-flow mixing reactor of claim 1, wherein: the top of the turbulence cylinder (2) is provided with a feeding pipe (22) for feeding gas-liquid mixed reaction materials;

the bottom of the reaction kettle (1) is provided with a discharge pipe (12) for discharging reaction products and unreacted materials from the reaction kettle (1).

3. The hydroformylation cross-flow mixing reactor of claim 1, wherein: still be provided with baffle (13) in reation kettle (1), just baffle (13) set up under turbulence tube (2) bottom opening.

4. The hydroformylation cross-flow mixing reactor of claim 1, wherein: the outer turbulence plate (11) and the inner wall of the reaction kettle (1) are obliquely arranged;

the inner spoiler (21) and the outer wall of the spoiler cylinder (2) are obliquely arranged.

5. The hydroformylation cross-flow mixing reactor of claim 1, wherein: a rotating wheel (24) for stirring air flow is arranged on the inner side of the inner turbulent plate (21);

the outer side of the inner turbulent plate (21) is provided with a plurality of bulges (25) for breaking bubbles.

6. The hydroformylation cross-flow mixing reactor of claim 5, wherein: the rotating wheel (24) is provided with a plurality of fan blades (241);

the protrusions (25) are hemispherical, and the outer surfaces of the hemispherical protrusions (25) are pointed.