Esterification reaction efficient catalytic rectifying tower

Abstract

The utility model relates to an esterification reaction efficient catalytic rectifying tower, which comprises a rectifying tower, a climbing mechanism is arranged outside the rectifying tower, a lifting mechanism is arranged inside the climbing mechanism, the lifting mechanism comprises a moving frame, a motor is fixedly arranged on the inner top wall of the moving frame, and the motor is connected with the climbing mechanism. An output shaft of the motor is fixedly connected with two worm shafts through couplings, two rotating rods are rotationally installed between the front side wall and the rear side wall of an inner cavity of the moving frame, and worm wheels are fixedly installed on the outer surfaces of the two rotating rods. According to the efficient catalytic rectifying tower for the esterification reaction, by arranging the lifting mechanism, the effect of driving a worker to move to a corresponding position is achieved, the rectifying tower is convenient to maintain, the maintenance efficiency is improved, by arranging the climbing mechanism, the aim of climbing the rectifying tower is achieved, and final guarantee is provided for maintenance of the rectifying tower; the rectifying tower cannot be maintained due to damage of the lifting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a high-efficiency catalytic distillation tower for esterification reactions. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device for distillation. It utilizes the different volatilities of the components in the mixture, that is, the different vapor pressures of the components at the same temperature, to transfer the light components in the liquid phase to the gas phase, and the heavy components in the gas phase to the liquid phase, thereby achieving the purpose of separation. In the esterification reaction of ethanol and dimethyl carbonate, a reaction distillation tower will be used. Generally, a reaction distillation tower is composed of a plate section and a packing section. The lower plate section is the ethanol and dimethyl carbonate reaction process section, and the upper packing section is the reaction by-product methanol and unreacted reagent DMC refining and concentration section.

[0003] According to the patent with announcement number CN218280601U, an esterification reaction distillation tower is proposed. The esterification reaction distillation tower uses a theoretical number of twenty-five tower plates in the esterification reaction distillation tower of ethanol and dimethyl carbonate. Compared with the traditional conversion of ethanol and dimethyl carbonate esterification reaction, the conversion rate and production efficiency of ethanol and dimethyl carbonate esterification reaction are greatly improved, and the amount of unreacted materials and hazardous waste is reduced. The rectangular perforations in the bubble cap can also disperse the gas introduced from the bottom of the tower body of the tower plate section into a plurality of small bubbles, thereby increasing the reaction area between the reaction liquid and the gas. In addition, the utility model provides an installation and maintenance hole on one side above the tower plate, so that the operator can directly install or repair the tower plate through the installation and maintenance hole, thereby reducing the difficulty and labor of the operator to install and repair the tower plate.

[0004] However, when the esterification reaction distillation tower is installed with a tower plate or the air riser holes on the tower plate are clogged and need to be repaired, maintenance personnel need to move to the damaged part via stairs or ladders set up on the outer surface of the catalytic distillation tower to repair it or maintain the catalytic distillation tower. During this process, the staff needs to move to the corresponding position via the stairs or ladders, which is time-consuming and has certain risks in the process of climbing the ladder. Therefore, an esterification reaction high-efficiency catalytic distillation tower is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-efficiency catalytic distillation tower for esterification reaction, which has the advantage of convenient maintenance of the distillation tower and solves the problem that when the installation tower plate or the air riser holes on the tower plate are blocked and need to be repaired, the maintenance personnel need to move to the damaged part via stairs or ladders set up on the outer surface of the catalytic distillation tower to repair it or maintain the catalytic distillation tower. In this process, the staff needs to move to the corresponding position via the stairs or ladders, which is time-consuming and there is a certain degree of danger in the process of climbing the ladder.

[0006] To achieve the above object, the utility model provides the following technical solution: an esterification reaction high-efficiency catalytic distillation tower, comprising a distillation tower, a climbing mechanism is arranged outside the distillation tower, and a lifting mechanism is arranged inside the climbing mechanism;

[0007] The lifting mechanism includes a moving frame, a motor is fixedly installed on the inner top wall of the moving frame, the output shaft of the motor is fixedly connected to two worm shafts through a coupling, two rotating rods are rotatably installed between the front and rear side walls of the inner cavity of the moving frame, worm wheels are fixedly installed on the outer surfaces of the two rotating rods, the outer surfaces of the two worm wheels are respectively meshed with the outer surfaces of the two worm shafts, and gears are fixedly installed on the outer surfaces of the two rotating rods.

[0008] Furthermore, the climbing mechanism includes a base plate, the bottom of the base plate is fixedly connected to the concrete foundation, the top of the base plate is fixedly installed with a support frame, the top of the support frame is fixedly installed with a maintenance plate, and the bottom of the maintenance plate is fixedly installed with a ladder.

[0009] Furthermore, a stabilizing plate is fixedly installed between the front and rear side walls of the inner cavity of the movable frame, and the inner surface of the stabilizing plate is rotatably connected to the outer surface of the worm shaft.

[0010] Furthermore, rotating seats are fixedly mounted on both the front and rear side walls of the inner cavity of the movable frame, and the inner surfaces of the two rotating seats are rotatably connected to the two ends of the rotating rod respectively.

[0011] Furthermore, a circular hole is opened inside the maintenance plate, and the size of the circular hole is larger than the size of the distillation tower.

[0012] Furthermore, the support frame, the maintenance plate and the ladder together form a maintenance frame, and the maintenance frame is provided with seven layers.

[0013] Furthermore, a lifting frame is fixedly installed inside the seventh-layer maintenance frame, and the inner surface of the lifting frame is slidably connected to the outer surface of the movable frame.

[0014] Furthermore, racks are fixedly installed between the left and right side walls of the inner cavity of the lifting frame, and opposite sides of the two racks are respectively meshed with outer surfaces of two gears.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The esterification reaction high-efficiency catalytic distillation tower is provided with a lifting mechanism to drive the staff to move to the corresponding position, which facilitates the maintenance of the distillation tower and improves the efficiency of maintenance. The climbing mechanism is provided to achieve the purpose of climbing the distillation tower, providing the final guarantee for the maintenance of the distillation tower and preventing the distillation tower from being unable to be repaired due to damage to the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 The utility model structure Figure 1 A in the enlarged view;

[0019] Figure 3 The utility model structure Figure 1 Top view cross-section of .

[0020] In the figure: 1. distillation tower; 2. climbing mechanism; 201. bottom plate; 202. support frame; 203. maintenance plate; 204. ladder; 205. lifting frame; 206. rack; 3. lifting mechanism; 301. moving frame; 302. motor; 303. worm shaft; 304. rotating rod; 305. worm wheel; 306. gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1 and Figure 2In this embodiment, a high-efficiency catalytic distillation tower for esterification reaction includes a distillation tower 1, a climbing mechanism 2 is arranged outside the distillation tower 1, a lifting mechanism 3 is arranged inside the climbing mechanism 2, and the lifting mechanism 3 includes a moving frame 301, a motor 302 is fixedly installed on the inner top wall of the moving frame 301, and the output shaft of the motor 302 is fixedly connected to two worm shafts 303 through a coupling, and a stabilizing plate is fixedly installed between the front and rear side walls of the inner cavity of the moving frame 301, and the inner surface of the stabilizing plate is rotatably connected to the outer surface of the worm shaft 303.

[0023] Among them, two rotating rods 304 are rotatably installed between the front and rear side walls of the inner cavity of the moving frame 301, and rotating seats are fixedly installed on the front and rear side walls of the inner cavity of the moving frame 301. The inner surfaces of the two rotating seats are respectively rotatably connected to the two ends of the rotating rods 304, and the outer surfaces of the two rotating rods 304 are fixedly installed with worm gears 305. The outer surfaces of the two worm gears 305 are respectively meshed with the outer surfaces of the two worm shafts 303, and the outer surfaces of the two rotating rods 304 are fixedly installed with gears 306.

[0024] Specifically, when repairing the distillation tower 1, the staff stands on the mobile frame 301 and starts the motor 302 to drive the two worm shafts 303 to rotate. The two worm shafts 303 respectively drive the two rotating rods 304 and the worm wheel 305 to rotate in opposite directions. The two rotating rods 304 drive the mobile frame 301 to be lifted and lowered through the lifting frame 205 and the rack 206 through the two gears 306. The mobile frame 301 moves the staff to the corresponding position, which is convenient for repairing the distillation tower 1 and improves the efficiency of repair.

[0025] Example 2: Please refer to Figure 1 and Figure 3 On the basis of the first embodiment, the climbing mechanism 2 includes a base plate 201, the bottom of the base plate 201 is fixedly connected to the concrete foundation, a support frame 202 is fixedly installed on the top of the base plate 201, a maintenance plate 203 is fixedly installed on the top of the support frame 202, a circular hole is opened inside the maintenance plate 203, the size of the circular hole is larger than the size of the distillation tower 1, a ladder 204 is fixedly installed at the bottom of the maintenance plate 203, the support frame 202, the maintenance plate 203 and the ladder 204 together constitute a maintenance frame, and the maintenance frame is provided with seven layers.

[0026] Among them, a lifting frame 205 is fixedly installed inside the seven-layer maintenance rack, and the inner surface of the lifting frame 205 is slidably connected to the outer surface of the movable frame 301. A rack 206 is fixedly installed between the left and right side walls of the inner cavity of the lifting frame 205, and the opposite sides of the two racks 206 are respectively meshed with the outer surfaces of the two gears 306.

[0027] Specifically, the two rotating rods 304 drive the movable frame 301 to be raised and lowered through the lifting frame 205 and the rack 206 through the two gears 306. When the lifting mechanism 3 is damaged, the staff can move to the corresponding maintenance frame through the ladder 204, providing the final guarantee for the maintenance of the distillation tower 1 and preventing the distillation tower 1 from being unable to be repaired due to damage to the lifting mechanism 3.

[0028] The working principle of the above embodiment is:

[0029] When repairing the distillation tower 1, the staff stands on the mobile frame 301 and starts the motor 302 to drive the two worm shafts 303 to rotate. The two worm shafts 303 respectively drive the two rotating rods 304 and the worm wheel 305 to rotate in opposite directions. The two rotating rods 304 drive the mobile frame 301 to be lifted and lowered through the lifting frame 205 and the rack 206 through two gears 306. The mobile frame 301 moves the staff to the corresponding position. When the lifting mechanism 3 is damaged, the staff can move to the corresponding maintenance frame through the ladder 204.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient catalytic distillation tower for esterification reaction, comprising a distillation tower (1), characterized in that: The distillation tower (1) is provided with a climbing mechanism (2) outside, and a lifting mechanism (3) is provided inside the climbing mechanism (2); The lifting mechanism (3) comprises a moving frame (301), a motor (302) is fixedly mounted on the inner top wall of the moving frame (301), an output shaft of the motor (302) is fixedly connected to two worm shafts (303) via a coupling, two rotating rods (304) are rotatably mounted between the front and rear side walls of the inner cavity of the moving frame (301), worm wheels (305) are fixedly mounted on the outer surfaces of the two rotating rods (304), the outer surfaces of the two worm wheels (305) are respectively meshed with the outer surfaces of the two worm shafts (303), and gears (306) are fixedly mounted on the outer surfaces of the two rotating rods (304).

2. The high-efficiency catalytic distillation tower for esterification reaction according to claim 1, characterized in that: The climbing mechanism (2) comprises a base plate (201), the bottom of the base plate (201) is fixedly connected to a concrete foundation, a support frame (202) is fixedly mounted on the top of the base plate (201), a maintenance plate (203) is fixedly mounted on the top of the support frame (202), and a ladder (204) is fixedly mounted on the bottom of the maintenance plate (203).

3. The high-efficiency catalytic distillation tower for esterification reaction according to claim 1, characterized in that: A stabilizing plate is fixedly installed between the front and rear side walls of the inner cavity of the moving frame (301), and the inner surface of the stabilizing plate is rotatably connected to the outer surface of the worm shaft (303).

4. The high-efficiency catalytic distillation tower for esterification reaction according to claim 1, characterized in that: Rotating seats are fixedly mounted on both the front and rear side walls of the inner cavity of the movable frame (301), and the inner surfaces of the two rotating seats are rotatably connected to the two ends of the rotating rod (304) respectively.

5. The high-efficiency catalytic distillation tower for esterification reaction according to claim 2, characterized in that: A circular hole is provided inside the maintenance plate (203), and the size of the circular hole is larger than the size of the distillation tower (1).

6. The high-efficiency catalytic distillation tower for esterification reaction according to claim 2, characterized in that: The support frame (202), the maintenance plate (203) and the ladder (204) together form a maintenance frame, and the maintenance frame is provided with seven layers.

7. The high-efficiency catalytic distillation tower for esterification reaction according to claim 6, characterized in that: A lifting frame (205) is fixedly installed inside the seventh-layer maintenance frame, and the inner surface of the lifting frame (205) is slidably connected to the outer surface of the moving frame (301).

8. The high-efficiency catalytic distillation tower for esterification reaction according to claim 7, characterized in that: A rack (206) is fixedly installed between the left and right side walls of the inner cavity of the lifting frame (205), and the opposite sides of the two racks (206) are respectively meshed with the outer surfaces of the two gears (306).

Images