Catalytic rectifying tower for sec-butyl alcohol production

Abstract

The utility model discloses a catalytic rectifying tower for sec-butyl alcohol production, and belongs to the field of catalytic rectifying towers. A catalytic rectifying tower for sec-butyl alcohol production comprises a tower body, a plurality of tower plates are evenly arranged in the tower body, a liquid scraping mechanism is mounted on the inner wall of the top of the tower body and comprises a mounting frame fixedly connected with the inner wall of the top of the tower body, a rotating shaft is rotatably mounted in the center of the mounting frame, and fan blades are fixedly mounted at the top of the rotating shaft. A connecting rod is fixedly mounted at the bottom of the rotating shaft, a liquid scraping ring is connected to the bottom of the connecting rod through a connecting frame, a plurality of liquid inlets are formed in the outer side face of the liquid scraping ring, a baffle ring is fixedly mounted at the bottom of the liquid scraping ring, and a liquid scraping plate is mounted on one side of each liquid inlet; according to the liquid scraping device, the liquid scraping ring rotates to scrape liquid on the inner wall of the top of the tower body through the arranged liquid scraping mechanism under the driving of ascending airflow in the tower body by the fan blades, so that the rectification efficiency is effectively improved, and on the other hand, the use of power equipment is reduced, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to catalytic rectification tower technical field especially relates to catalytic rectification tower for sec -butyl alcohol production. BACKGROUND

[0002] In the production of sec -butyl alcohol, catalytic rectification tower is mainly used to improve reaction efficiency and product purity. For example, in the ester exchange reaction of sec -butyl acetate and methanol, catalytic rectification tower makes reactants complete ester exchange reaction in the tower through the action of catalyst, and separates out unreacted methanol and other byproducts.

[0003] Through the search, the patent of china patent application no.202322722657.6 discloses a catalytic rectification tower for sec -butyl alcohol production, including tower body, the inside top center position of tower body is equipped with electric push rod, the top outer periphery of electric push rod is fixedly installed with first crossbar, the bottom inner side of electric push rod is fixedly installed with driving motor through inlaying, the output shaft end of driving motor extends to the bottom outer side of electric push rod, the output shaft end of driving motor is equipped with second crossbar, the outer periphery of second crossbar is fixedly provided with connecting ring, the outer periphery surface of connecting ring is fixedly installed with scraper, by setting electric push rod, driving motor, second crossbar, connecting ring and scraper on the top of tower body, the liquid formed due to condensation on the inner wall surface of the top end of tower body is scraped off, so that it drops along the scraper, so as to flow into the lower part of tower body for rectification quickly, and the design greatly improves the efficiency of rectification;

[0004] Although the liquid on the inner wall of the tower body can be scraped off by the electric push rod and the driving motor in the above-mentioned patent, but during use, the viscosity of the lubricating oil in the electric push rod will be reduced due to the high temperature and high humidity environment in the tower body, thereby increasing the wear of the friction part and shortening the service life, and also causing the motor to heat up and be damaged, which affects the normal production of the rectification tower.

[0005] Therefore, it is urgent to develop a catalytic rectification tower for sec -butyl alcohol production to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problems that the environment in the tower body in the prior art causes the electric push rod and the motor to malfunction and shorten their service life, causes frequent maintenance and replacement, and affects the normal production of the rectification tower, and proposes the catalytic rectification tower for sec -butyl alcohol production.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a catalytic rectification tower for sec -butyl alcohol production, including tower body, a plurality of tower plate are uniformly arranged in the inside of tower body, the inner wall on the top of tower body is equipped with the liquid scraping mechanism, the liquid scraping mechanism includes the mount rack fixedly connected with the inner wall on the top of tower body, the central position of mount rack is rotatably installed with the pivot, the top of pivot is fixedly installed with the fan blade, the bottom of pivot is fixedly installed with the connecting rod, the bottom of connecting rod is connected with the liquid scraping ring through the connecting frame, a plurality of liquid inlets are formed on the outside of liquid scraping ring, the bottom of liquid scraping ring is fixedly installed with the baffle, one side of liquid inlet is equipped with the liquid scraping plate.

[0009] As a preferred technical scheme of the present application, the top of the tower body is communicated with one end of the heat exchanger through the gas outlet pipe, the other end of the heat exchanger is provided with a first liquid discharge pipe at the bottom, and the first liquid discharge pipe is communicated with the tower body through the reflux pipe.

[0010] As a preferred technical scheme of the present application, the bottom of the tower body is provided with a feed pipe on one side for feeding, one side of the tower body is communicated with a reboiler through a liquid outlet pipe, the bottom of the tower body is communicated with a gas return pipe, the other end of the gas return pipe is connected with the reboiler, and the bottom of the reboiler is installed with a second liquid discharge pipe.

[0011] As a preferred technical scheme of the present application, the liquid inlet is inclined.

[0012] As a preferred technical scheme of the present application, the gas distribution plate is installed on the tower plate, and a plurality of gas distribution pipes are installed through the gas distribution plate.

[0013] As a preferred technical scheme of the present application, the gas distribution pipe is provided with gas distribution grooves in a circumferential distribution inside the gas distribution pipe, and the top of the gas distribution groove is funnel-shaped.

[0014] As a preferred technical scheme of the present application, the bottom of the gas distribution plate is provided with a supporting column at each corner.

[0015] Compared with the prior art, the catalytic rectification tower for sec-butyl alcohol production has the following beneficial effects:

[0016] 1. The catalytic rectification tower for sec-butyl alcohol production is provided with a liquid scraping mechanism, the liquid scraping ring is driven to rotate by the rising gas flow in the tower body, the liquid on the inner wall of the top of the tower body is scraped off, the rectification efficiency is effectively improved, the use of power equipment is reduced, the cost is reduced, the problems of the environment in the tower body of the prior art, such as the failure of the electric push rod and the motor and the shortening of the service life, frequent maintenance and replacement, and the influence on the normal production of the rectification tower are solved.

[0017] 2. The catalytic rectification column for producing sec-butyl alcohol, through the gas distribution plate and the gas distribution pipes uniformly distributed on the gas distribution plate, when the ascending gas flow passes through the tray, the gas flow contacts with the liquid and disperses to the four directions after passing through the gas distribution grooves in the gas distribution pipes, the contact area with the liquid phase is improved, and the contact area of the gas phase with the liquid phase is also improved after the bubbles generated by the combination of the gas phase and the liquid phase are crushed by extrusion when passing through the gas distribution pipes, and the mass transfer efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a tower body internal section view of the utility model;

[0020] Figure 3 It is a liquid scraping mechanism structure schematic view of the utility model;

[0021] Figure 4 It is a gas distribution plate structure schematic view of the utility model;

[0022] Figure 5 It is a gas distribution pipe internal structure schematic view of the utility model.

[0023] In the drawing:

[0024] 1, tower body; 2, gas outlet pipe; 3, heat exchanger; 4, first liquid discharge pipe; 5, reflux pipe; 6, feed pipe; 7, gas return pipe; 8, reboiler; 9, second liquid discharge pipe; 10, liquid outlet pipe; 11, tray; 12, gas distribution plate; 13, liquid scraping mechanism; 131, fan blade; 132, mounting bracket; 133, connecting rod; 134, liquid scraping ring; 135, liquid scraping plate; 136, baffle ring; 137, connecting bracket; 138, rotating shaft; 14, gas distribution pipe; 15, support column; 16, gas distribution groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments; Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Embodiment:

[0027] Refer to Figures 1-5The utility model relates to a catalytic rectification tower for producing sec -butyl alcohol, which comprises a tower body 1, the top of the tower body 1 is communicated with one end of a heat exchanger 3 through a gas outlet pipe 2, the other end of the heat exchanger 3 is provided with a first liquid discharge pipe 4 at the bottom, the first liquid discharge pipe 4 is communicated with the tower body 1 through a reflux pipe 5, the gas is transported into the heat exchanger 3 through the gas outlet pipe 2, and after condensation, the gas is transported into the tower body 1 for further rectification or discharged as a finished product; a feeding pipe 6 is arranged at one side of the bottom of the tower body 1 for feeding, a reboiler 8 is communicated with the tower body 1 through a liquid outlet pipe 10 at one side of the tower body 1, a gas return pipe 7 is communicated with the bottom of the tower body 1, the other end of the gas return pipe 7 is connected with the reboiler 8, the liquid transported by the gas return pipe 7 is heated by the reboiler 8, the gas generated after heating is transported into the tower body 1 through the gas return pipe 7, and the bottom of the reboiler 8 is provided with a second liquid discharge pipe 9;

[0028] A plurality of tower plates 11 are uniformly arranged in the tower body 1, a gas distribution plate 12 is arranged on each tower plate 11, a plurality of gas distribution pipes 14 are arranged on the gas distribution plate 12, a plurality of gas distribution grooves 16 are arranged in the gas distribution pipes 14 in a circumferential direction, the top of each gas distribution groove 16 is funnel-shaped, when the gas passes through the gas distribution pipes 14, the gas is dispersed by the gas distribution grooves 16, the contact area between the gas phase and the liquid phase is increased, and the mass transfer efficiency is improved; a supporting column 15 is arranged at the bottom of each gas distribution plate 12, and the top of each tower plate 11 is connected with the supporting column 15.

[0029] Referring to Figure 3 Further, a liquid scraping mechanism 13 is arranged on the inner wall of the top of the tower body 1, the liquid scraping mechanism 13 comprises a mounting frame 132 fixedly connected with the inner wall of the top of the tower body 1, a rotating shaft 138 rotatably arranged at the center of the mounting frame 132, a fan blade 131 fixedly arranged at the top of the rotating shaft 138, a connecting rod 133 fixedly arranged at the bottom of the rotating shaft 138, a liquid scraping ring 134 connected with the connecting rod 133 through a connecting frame 137, a plurality of liquid inlets arranged on the outer side of the liquid scraping ring 134, a blocking ring 136 fixedly arranged at the bottom of the liquid scraping ring 134, the liquid inlets being inclined, and a liquid scraping plate 135 arranged at one side of each liquid inlet, when rotating, the liquid on the inner wall of the top of the tower body 1 is scraped off by the liquid scraping plate 135 and enters the tower body 1 through the liquid inlets, the rectification efficiency is improved, the bottom of the liquid scraping ring 134 is blocked by the blocking ring 136, the liquid is gathered and then enters the tower body 1 through the liquid inlets, the liquid is prevented from being attached to the inner wall of the tower body 1, when in use, the fan blade 131 rotates under the driving of the upward gas flow in the tower body 1 and drives the liquid scraping ring 134 to rotate, the structure is simple, the service life is long, and the liquid scraping mechanism 13 is convenient to clean and maintain.

[0030] Specifically, the catalytic rectifying column for producing sec-butyl alcohol is used: through the scraper mechanism 13, under the driving of the rising airflow in the column body 1, the fan blade 131 rotates, the rotation of the fan blade 131 drives the connecting rod 133 and the scraper ring 134 to rotate through the rotating shaft 138, the plurality of scraper plates 135 outside the scraper ring 134 scrape the liquid on the inner wall of the column body 1, and then the liquid enters the column body 1 through the liquid inlet on the scraper ring 134.

[0031] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A catalytic distillation column for the production of sec-butanol, comprising a column body (1), characterized in that, The tower body (1) is uniformly provided with multiple tower plates (11) inside. A scraping mechanism (13) is installed on the top inner wall of the tower body (1). The scraping mechanism (13) includes a mounting frame (132) fixedly connected to the top inner wall of the tower body (1). A rotating shaft (138) is rotatably installed at the center of the mounting frame (132). A fan blade (131) is fixedly installed at the top of the rotating shaft (138). A connecting rod (133) is fixedly installed at the bottom of the rotating shaft (138). A scraping ring (134) is connected to the bottom of the connecting rod (133) through a connecting frame (137). Multiple liquid inlets are opened on the outer side of the scraping ring (134). A baffle ring (136) is fixedly installed at the bottom of the scraping ring (134). A scraping plate (135) is installed on one side of the liquid inlet.

2. The catalytic distillation column for sec-butanol production according to claim 1, characterized in that, The top of the tower body (1) is connected to one end of the heat exchanger (3) through the gas outlet pipe (2), and the bottom of the other end of the heat exchanger (3) is provided with a first drain pipe (4), which is connected to the tower body (1) through the return pipe (5).

3. The catalytic distillation column for sec-butanol production according to claim 1, characterized in that, The bottom side of the tower body (1) is provided with a feed pipe (6) for feeding materials. One side of the tower body (1) is connected to a reboiler (8) through a liquid outlet pipe (10). The bottom of the tower body (1) is connected to a return gas pipe (7). The other end of the return gas pipe (7) is connected to the reboiler (8). The bottom of the reboiler (8) is equipped with a second drain pipe (9).

4. The catalytic distillation column for sec-butanol production according to claim 1, characterized in that, The inlet is inclined.

5. The catalytic distillation column for sec-butanol production according to claim 1, characterized in that, A gas distribution plate (12) is installed on the tower plate (11), and multiple gas distribution pipes (14) are installed through the gas distribution plate (12).

6. The catalytic distillation column for sec-butanol production according to claim 5, characterized in that, The gas distribution pipe (14) has a circumferentially distributed gas distribution groove (16) inside, and the top of the gas distribution groove (16) is funnel-shaped.

7. The catalytic distillation column for sec-butanol production according to claim 5, characterized in that, Support columns (15) are installed at the four bottom corners of the air distribution plate (12).

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