CN216571583U - Catalytic reaction distillation tower - Google Patents

Abstract

The utility model discloses a catalytic reaction distillation tower, which comprises a distillation tower body, wherein a heat exchanger is arranged on the distillation tower body, the heat exchanger is connected with the distillation tower body through a guide pipe, a sieve plate is arranged in the distillation tower body, a drainage plate for conveying liquid is arranged on the sieve plate, so that the liquid level is established after the liquid flows into the bottom of the distillation tower body through the drainage plate, an adjusting component for reducing the channeling phenomenon is arranged in the distillation tower body, the catalytic reaction distillation tower correspondingly reduces the gas flowing speed to the sieve plate through the adjusting component, so that the probability of the channeling phenomenon is reduced, gas flows upwards from the bottom of the distillation tower body, if more gas can rotate a knob to enable a curved channel to be in a vertical state, part of gas flows into the bottom of the curved channel and flows out from the bottom of the curved channel or from scattered gas holes with different heights, to change the rate of gas flow and thereby avoid channeling of the gas moving to the screen deck.

Description

Catalytic reaction distillation tower

Technical Field

The utility model relates to the technical field of distillation towers, in particular to a catalytic reaction distillation tower.

Background

The catalytic reaction distillation is a chemical technology which is developed in recent years and has wide application, and a reactor and a fractionating tower are integrated into a catalytic reaction distillation tower by adopting the technology, so that the catalytic reaction distillation tower has the advantages of low investment, low operation cost, less required equipment, simplified flow, convenient operation and control, high heat energy utilization rate, strong raw material adaptability and the like. It is especially suitable for the etherification process of isobutylene and methanol to produce methyl tert-butyl ether, and can also be used in the system with high catalytic reaction rate and reaction and distillation realized under the same condition.

As is known, a catalytic distillation column generally includes three sections, namely, a rectifying section, a reactive distillation section and a stripping section, wherein a layer of liquid is distributed on a sieve plate of the rectifying column during operation, vapor passes through small holes which are distributed with the liquid, a small bubble is formed during the passing process, the section becomes a bubbling region, the bubbling region is a gas-liquid mass transfer region, and during the operation of the distillation column, a channeling phenomenon often occurs because the fluid opens a passage with small resistance and passes through the bed layer with a very short retention time, so that the gas and the liquid directly flow out along with a product without sufficient reaction, thereby resulting in insufficient product purity and reducing the operation efficiency of the distillation column.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a catalytic distillation column to solve the problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a catalytic reaction distillation tower comprises a distillation tower body, wherein a heat exchanger is arranged on the distillation tower body, the heat exchanger is connected with the distillation tower body through a guide pipe, a sieve plate is arranged in the distillation tower body, a drainage plate used for conveying liquid is arranged on the sieve plate, so that the liquid level is established after the liquid flows into the bottom of the tower through the drainage plate by the distillation tower body, and an adjusting assembly used for reducing a channeling phenomenon is arranged in the distillation tower body; the gas in the distillation tower body flows to the sieve plate under the action of the adjusting assembly, the flowing-out path of the gas is increased by the adjusting assembly, so that the channeling probability generated by the gas at the sieve plate is reduced, and the gas path flowing into the sieve plate is increased under the action of the adjusting assembly, so that the probability of channeling is reduced.

Preferably, the adjusting assembly comprises a knob arranged on the distillation column body, a curved channel for increasing the gas outflow path is arranged inside the distillation column body, the curved channel and the knob are connected through a rotating shaft, and a rotating column for connecting with the inner wall of the distillation column body is arranged on the curved channel, so that the knob is rotated to enable the curved channel to be in a vertical state, and the gas flows into the curved channel to increase the flow path of the gas.

Preferably, the inside double-deck dislocation board that is provided with of distillation column body to be provided with a plurality of gas through-hole on the double-deck dislocation board, just gas through-hole's radius is less than the round hole on the sieve, so that gas through-hole plays certain resistance to the gas of efflux and makes the gaseous speed that flows in the sieve slow down, makes the gaseous speed that flows in to the sieve slow down of gas through the gas through-hole on the double-deck dislocation board.

Preferably, a plurality of air diffusing holes are arranged on the curved channel, so that the air diffusing holes can change the speed of the air flowing into the curved channel, and the air can flow out from different positions of the curved channel through the air diffusing holes, thereby changing the flow speed between the air.

Preferably, the distillation column body is provided with a feed port for conveying the raw material, and the distillation column body is provided with a reboiler for heating the product.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model correspondingly reduces the speed of gas flowing into the sieve plate by adjusting the assembly, so that the probability of channeling is reduced, the gas flows upwards from the bottom of the distillation tower body, if more gas can rotate the knob to enable the curved channel to be in a vertical state, part of the gas flows in from the bottom of the curved channel and flows out from the bottom of the curved channel or the air dispersing holes with different heights, so that the flowing speed of the gas is changed, and the channeling is prevented from occurring when the gas moves to the sieve plate.

2. The utility model is provided with the double-layer plate, and the gas through holes are arranged on the double-layer plate, so that the gas flowing into the sieve plate is slowed down through the gas through holes.

Drawings

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

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a schematic view of an adjusting assembly according to the present invention.

In the figure: 1-a distillation column body; 2-a heat exchanger; 3-a catheter; 4-sieve plate; 5-a drainage plate; 6-adjusting the assembly; 7-double-layer dislocation plate; 8-an output pipe; 9-a reboiler; 10-a feeding port; 61-knob; 62-curved channel; 63-a rotating shaft; 64-rotating the column; 65-fixing plate; 71-a through hole; 621-air dispersing hole.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a catalytic reaction distillation tower solves the problem that in the working process of the existing distillation tower, channeling often occurs because of uneven flow, a channel with small resistance is opened by fluid, the fluid passes through a bed layer in extremely short retention time, so that the gas and the liquid directly flow out along with a product without full reaction, the obtained product has insufficient purity, and the working efficiency of the distillation tower is reduced, and comprises a distillation tower body 1, wherein a conduit 3 is arranged at the top of the distillation tower body 1, one end of the conduit 3 is connected with a heat exchanger 2, a feed inlet 10 for conveying raw materials is arranged on the distillation tower body 1, an output pipe 8 is arranged at the bottom of the distillation tower body 1, one end of the output pipe 8 is connected with a reboiler 9 for heating the product, a plurality of sieve plates 4 are arranged in the distillation tower body 1, and a drainage plate 5 for conveying the liquid is arranged on the sieve plates 4, so that the distillation tower body 1 establishes liquid level after liquid flows into the bottom of the tower through the drainage plate 5, and the distillation tower body 1 is internally provided with an adjusting assembly 6 for reducing channeling phenomenon; the gas inside the distillation column body 1 flows to the sieve plate 4 under the action of the adjusting assembly 6, and the adjusting assembly 6 increases the outflow path of the gas, so that the channeling probability generated by the gas at the sieve plate 4 is reduced.

The adjusting component in the scheme comprises a knob 61 arranged outside a distillation tower body 1, a curved channel 62 used for increasing a gas outflow path is arranged inside the distillation tower body 1, the curved channel 62 is connected with the knob 61 through a rotating shaft 63, a rotating column 64 used for being connected with the inner wall of the distillation tower body 1 is arranged on the curved channel 62, the rotating shaft 63, the rotating column 64 and the curved channel 62 are connected through a fixing plate 65, so that the rotating shaft 63 drives the curved channel 62 to rotate by rotating the knob 61, the curved channel 62 is in a vertical state, part of gas enters the curved channel 62 to flow, the moving path of the gas is correspondingly increased, a plurality of gas diffusing holes 621 are arranged on the curved channel 62, the gas diffusing holes 621 change the speed of the gas flowing into the curved channel 62, when the gas flows into the curved channel 62, flow out through different louvres between the gas, thereby change the speed that the gas flows, make the gas that flows into to sieve 4 reduce relatively, in order to reach the probability that the channeling phenomenon appears in the reduction, and 1 internally mounted of distillation column body in this scheme has the double-deck dislocation board 7 of a plurality of, wherein double-deck dislocation board 7 is located the sieve 4 bottom, and be provided with a plurality of gas passage 71 on double-deck dislocation board 7, and gas passage 71's radius is less than the round hole on the sieve 4, so that gas passage 71 plays certain resistance to the gas and makes the gas rate who flows into sieve 4 slow down, thereby make the gas rate that flows to sieve 4 carry out corresponding slowing down, in order to reach the probability that the channeling phenomenon appears in the reduction.

In the scheme, the speed of gas flowing to the sieve plate 4 is correspondingly slowed down by the adjusting assembly 6, so that the probability of the channeling phenomenon at the sieve plate 4 is reduced, when more gas is at the bottom of the distillation tower body 1, in order to improve the channeling phenomenon at the sieve plate 4, the knob 61 can be rotated to enable the rotating shaft 63 to drive the curved channel 62 to be in a vertical state, at the moment, part of gas enters the curved channel 62, as the curved channel 62 is internally provided with a plurality of gas diffusing holes 621, the gas flows out from the gas through the different gas diffusing holes 621 and the top of the curved channel 62, so that the flowing speed of part of gas is correspondingly changed, when the gas flows at the double-layer staggered file plate, because the radius of the gas exhausting holes is smaller than the radius of the circular holes on the sieve plate 4, the gas is blocked by the double-layer staggered plate 7, and the moving speed of the gas is reduced to a certain extent, and the gas input is reduced by the exhaust holes with smaller radius, so that the gas flowing into the sieve plate 4 is correspondingly reduced, and the probability of channeling is correspondingly reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a catalytic reaction distillation column, includes distillation column body (1), be provided with heat exchanger (2) on distillation column body (1), just be connected with it through pipe (3) between heat exchanger (2) and distillation column body (1), its characterized in that: a sieve plate (4) is arranged in the distillation tower body (1), a drainage plate (5) for conveying liquid is arranged on the sieve plate (4), so that the distillation tower body (1) enables the liquid to flow into the bottom of the tower through the drainage plate (5) and then establishes a liquid level, and an adjusting assembly (6) for reducing a channeling phenomenon is arranged in the distillation tower body (1);

the gas in the distillation tower body (1) flows to the sieve plate (4) under the action of the adjusting assembly (6), and the adjusting assembly (6) enables the outflow path of the gas to be increased, so that the channeling probability generated by the gas at the sieve plate (4) is reduced.

2. A catalytic distillation column as claimed in claim 1, wherein: the adjusting assembly comprises a knob (61) arranged on a distillation tower body (1), a curved channel (62) used for increasing a gas outflow path is arranged inside the distillation tower body (1), the curved channel (62) is connected with the knob (61) through a rotating shaft (63), and a rotating column (64) used for being connected with the inner wall of the distillation tower body (1) is arranged on the curved channel (62).

3. A catalytic distillation column as claimed in claim 1, wherein: distillation column body (1) inside is provided with double-layer dislocation board (7), and be provided with a plurality of gas through-hole (71) on double-layer dislocation board (7), just the radius of gas through-hole (71) is less than the round hole on sieve (4), so that gas through-hole (71) play certain resistance to the efflux gas and make the gas velocity who flows in sieve (4) slow down.

4. A catalytic distillation column as claimed in claim 2, wherein: the curved channel (62) is provided with a plurality of air diffusing holes (621) so that the air diffusing holes (621) can change the speed of the air flowing into the curved channel (62).

5. A catalytic distillation column as claimed in claim 1, wherein: the distillation tower comprises a distillation tower body (1), wherein a feeding port (10) for conveying raw materials is formed in the distillation tower body (1), and a reboiler (9) for heating products is arranged on the distillation tower body (1).

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