CN215611603U

CN215611603U - Microflow field tubular falling film reactor

Info

Publication number: CN215611603U
Application number: CN202122353658.9U
Authority: CN
Inventors: 赵跃; 张锴; 孟繁荣; 孟皓; 乔凯
Original assignee: Nanjing Advanced Biomaterials And Process Equipment Research Institute Co ltd
Current assignee: Nanjing Advanced Biomaterials And Process Equipment Research Institute Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-25
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a micro flow field tubular falling film reactor which comprises an outer tube, an inner tube, a feeding hole, a discharging hole and a vacuumizing hole, wherein the inner tube is inserted into the outer tube, the bottom of the inner tube is opened, and the top of the inner tube is connected with the feeding hole; a gap is reserved between the inner wall of the outer pipe and the outer wall of the inner pipe, the top of the gap is sealed, and the bottom of the gap is communicated with a discharge hole formed in the bottom of the outer pipe; inside the outer pipe, the inner wall of the inner pipe is provided with an inverted funnel type redistributor, the outer wall is provided with a raised and downward-inclined tongue piece, the root of the tongue piece is provided with an evaporation hole, and the bottom edge of the redistributor is hermetically connected with the inner wall of the inner pipe; the vacuumizing port penetrates through the pipe wall of the inner pipe, one end of the vacuumizing port is communicated with the outside, and the other end of the vacuumizing port is connected with the funnel mouth of the top redistributor. The reactor can effectively evaporate volatile components in the reaction medium, effectively improve the mixing effect of the reaction medium and strengthen the mass and heat transfer of the reaction. In addition, a plurality of the catalyst can be used in parallel, so that the production throughput is effectively improved.

Description

Microflow field tubular falling film reactor

Technical Field

The utility model belongs to the technical field of tubular falling film reactors, and particularly relates to a micro flow field tubular falling film reactor.

Background

At present, evaporation processes need to be added at the rear end or the front end of the reaction in many process flows, the types of evaporators on the market are more, and film evaporators are more widely used in the market, but the equipment is larger, the occupied area is more, and the investment is higher. In recent years, in order to improve the safety, environmental protection and intelligent manufacturing level of the petrochemical industry and accelerate the transformation and upgrading of the industry, the technical application of the novel microchannel reactor equipment and the continuous flow process is worth advocating vigorously. In order to adapt to the transformation of a microchannel continuous flow process, a novel microflow field tubular falling film reactor needs to be developed.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: aiming at the defects of the prior art, the utility model provides the micro-flow field tube type falling film reactor which perfectly integrates the reaction and falling film evaporation and has excellent effect.

The technical scheme is as follows: in order to achieve the purpose, the utility model adopts the following technical scheme:

a microflow field tubular falling film reactor comprises an outer tube, an inner tube, a feed inlet, a discharge outlet and a vacuum pumping port, wherein the inner tube is inserted into the outer tube, the bottom of the inner tube is opened, and the top of the inner tube is connected with the feed inlet; a gap is reserved between the inner wall of the outer pipe and the outer wall of the inner pipe, the top of the gap is sealed, and the bottom of the gap is communicated with a discharge hole formed in the bottom of the outer pipe; inside the outer pipe, the inner wall of the inner pipe is provided with an inverted funnel type redistributor, the outer wall is provided with a raised and downward-inclined tongue piece, the root of the tongue piece is provided with an evaporation hole, and the bottom edge of the redistributor is hermetically connected with the inner wall of the inner pipe; the vacuumizing port penetrates through the pipe wall of the inner pipe, one end of the vacuumizing port is communicated with the outside, and the other end of the vacuumizing port is connected with the funnel mouth of the top redistributor.

As a preferable or improved scheme:

the redistributor is provided with a plurality of redistributors from top to bottom, and a certain distance is arranged between every two adjacent redistributors.

The tongues are arranged in a staggered manner in the circumferential direction of the outer wall of the inner pipe, and the angles are consistent.

The bottom end of the inner tube is higher than the bottom end of the outer tube, and the relative position of the top end and the top end of the outer tube has no special requirement.

The vacuum pumping port penetrates through the pipe wall of the inner pipe, and the pipe wall is positioned outside the outer pipe.

The micro flow field tubular falling film reactor further comprises a shell, the outer tube is arranged inside the shell, the discharge hole in the bottom penetrates through the shell at the bottom of the shell, a heat medium inlet is formed in the side wall, close to the bottom, of the shell, and a heat medium outlet is formed in the side wall, close to the top, of the shell.

Has the advantages that: compared with the prior art, the reaction tube of the device has the advantages that the reaction fluid forms a thin liquid film through the guide effect of the tongues and the tube walls of the reactor, volatile components in the reaction medium can be effectively evaporated by combining with shell pass heating under the condition that the tube pass is simultaneously vacuumized, meanwhile, the tongues are arranged in a staggered mode to form turbulent flow, the mixing effect of the reaction medium is effectively improved, and the mass transfer and heat transfer of the reaction are enhanced. In addition, according to different treatment capacities, the tubular falling film reactor can realize parallel use of a plurality of tubular falling film reactors, so that the production treatment capacity is effectively improved.

Drawings

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

FIG. 2 is a schematic diagram of the structure of the device of the present invention including a housing.

Detailed Description

The present invention is further described below with reference to the accompanying drawings, but is not intended to limit the scope of the present invention. Modifications and substitutions to the disclosed structure may be made without departing from the spirit and scope of the utility model.

Example 1

A microflow field tubular falling film reactor is shown in figure 1, and comprises an outer tube 1, an inner tube 2, a feed inlet 3, a discharge outlet 4 and a vacuum pumping port 5, wherein the inner tube 2 is inserted into the outer tube 1, the bottom of the inner tube is opened, and the top of the inner tube is connected with the feed inlet 3; a gap 12 is reserved between the inner wall of the outer tube 1 and the outer wall of the inner tube 2, the top of the gap 12 is sealed, and the bottom of the gap is communicated with a discharge hole 4 arranged at the bottom of the outer tube 1; inside the outer tube 1, the inner wall of the inner tube 2 is provided with an inverted funnel-shaped redistributor 21, the outer wall is provided with a raised and downward-inclined tongue piece 22, the root of the tongue piece 22 is provided with an evaporation hole 23, and the bottom edge of the redistributor 21 is hermetically connected with the inner wall of the inner tube 2; the vacuum pumping port 5 penetrates through the pipe wall of the inner pipe 2, one end of the vacuum pumping port is communicated with the outside, and the other end of the vacuum pumping port is connected with the funnel mouth of the top redistributor 21.

The redistributor 21 is provided with a plurality of tongues 22 from top to bottom, a certain distance is arranged between every two adjacent tongues, and the tongues are staggered in the circumferential direction of the outer wall of the inner tube 2 and have consistent angles.

The bottom end of the inner tube 2 is higher than the bottom end of the outer tube 1, and the top end is higher than the top end of the outer tube 1. The evacuation port 5 passes through the wall of the inner tube 2, which is located outside the outer tube 1.

As shown in fig. 2, the heat exchanger further comprises a shell 6, the outer pipe 1 is arranged inside the shell 6, the discharge port 4 at the bottom penetrates through the shell at the bottom of the shell 6, a heat medium inlet 61 is arranged on the side wall of the shell 6 close to the bottom, and a heat medium outlet 62 is arranged on the side wall close to the top.

The working principle of the device of the utility model is as follows:

the reaction mass enters the inner tube 2 through the feed inlet 3, the liquid is evaporated under the conditions of heating of the heating medium in the outer shell 6 and vacuum pumping through the vacuum pumping port 5, the liquid-gas mixture enters the gap 12 between the outer tube 1 and the inner tube 2 through the evaporation holes 23 and the tongues 22, wherein, the liquid flows downwards through the gap 12 and flows out through the discharge hole 4, the gas reenters the inner pipe 2 through the evaporation holes 23 on the pipe wall of the inner pipe 2, then is discharged through the funnel mouth of the redistributor 21 and the vacuum-pumping port 5 under the action of vacuum pumping, meanwhile, liquid carried in the gas flows into the evaporation holes 23 along the inclined plane of the redistributor 21, then flows into the gaps 12 along the tongue pieces 22, and finally flows out through the discharge hole 4, each redistributor 21 can play the same role, the liquid and the gas can be perfectly separated, and volatile components in the reaction medium can be effectively evaporated.

According to different treatment capacities, the tubular falling film reactor can realize the parallel use of a plurality of tubular falling film reactors, thereby effectively improving the production treatment capacity.

Although the utility model has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. A micro flow field tubular falling film reactor is characterized by comprising an outer tube (1), an inner tube (2), a feeding hole (3), a discharging hole (4) and a vacuumizing hole (5), wherein the inner tube (2) is inserted into the outer tube (1), the bottom of the inner tube is open, and the top of the inner tube is connected with the feeding hole (3); a gap (12) is reserved between the inner wall of the outer pipe (1) and the outer wall of the inner pipe (2), the top of the gap (12) is sealed, and the bottom of the gap is communicated with a discharge hole (4) formed in the bottom of the outer pipe (1); inside the outer pipe (1), the inner wall of the inner pipe (2) is provided with an inverted funnel-shaped redistributor (21), the outer wall is provided with a raised and downward-inclined tongue piece (22), the root of the tongue piece (22) is provided with an evaporation hole (23), and the bottom edge of the redistributor (21) is hermetically connected with the inner wall of the inner pipe (2); the vacuumizing port (5) penetrates through the pipe wall of the inner pipe (2), one end of the vacuumizing port is communicated with the outside, and the other end of the vacuumizing port is connected with a funnel nozzle of the top redistributor (21).

2. The micro flow field tubular falling film reactor of claim 1, wherein the redistributor (21) is arranged from top to bottom, and a certain distance is arranged between every two adjacent redistributors.

3. The micro flow field tubular falling film reactor of claim 1, wherein the tongues (22) are staggered in the circumferential direction of the outer wall of the inner tube (2) at a uniform angle.

4. A micro flow field tubular falling film reactor according to claim 1, wherein the bottom end of the inner tube (2) is higher than the bottom end of the outer tube (1).

5. The micro flow field tubular falling film reactor according to claim 1, wherein the vacuum pumping port (5) penetrates through the wall of the inner tube (2) which is located outside the outer tube (1).

6. The micro flow field tubular falling film reactor according to claim 1, further comprising a housing (6), wherein the outer tube (1) is arranged inside the housing (6), the discharge hole (4) at the bottom penetrates through the bottom shell of the housing (6), a heat medium inlet (61) is arranged on the side wall of the housing (6) close to the bottom, and a heat medium outlet (62) is arranged on the side wall of the housing close to the top.