Pre-demethanizer convenient for fractionation

Abstract

The utility model discloses a pre-demethanization tower convenient for fractionation, which comprises a tower body, a preheating mechanism and a cleaning mechanism, climbing ladders are welded on both sides of the outer wall of the tower body, and observation windows are arranged on the outer wall of the tower body. By means of the arrangement, the preheating cylinder can be conveniently installed in the upper end opening through threaded connection that the positioning columns are matched with the positioning grooves, then the preheating cylinder is connected with the gas conveying end, gas mixed liquid is conveyed into the preheating cylinder through the gas conveying end, the preheating cylinder can heat the annular heat ring under the photovoltaic power generation effect of the photovoltaic power generation panel, and the heating effect is improved. According to the device, the annular ring heat ring can be used for fully and uniformly heating passing gas mixed liquid, and the preheated gas mixed liquid enters the tower body for fractionation and demethanization, so that the working efficiency and effect of the device are effectively improved, the energy consumption is reduced, and the energy-saving and emission-reducing capabilities of the device are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas separation, and specifically relates to a pre-demethanizer tower that is convenient for fractionation. Background Art

[0002] Gas separation equipment refers to equipment that liquefies, rectifies, and finally separates gases into oxygen, nitrogen, and other useful gases. Gas separation equipment is a complete set of equipment composed of various machinery and equipment, often classified according to air pressure, and commonly includes 3 types: high pressure, medium pressure, and low pressure. Low-pressure gas equipment is widely used due to its low power consumption, long continuous operation cycle, and high economic benefits. Cryogenic equipment for separating single-component gaseous and liquid products from multi-component raw gas, where multi-component raw gas usually refers to air, natural gas, coke oven gas, water gas, synthetic ammonia purge gas, and various cracking gases, etc. Common gas separation equipment includes air separation equipment, natural gas separation equipment, synthetic ammonia purge gas separation equipment, as well as coke oven gas, water gas separation equipment, and rare gas extraction equipment. Among them, as a demethanization device in the process of ethylene production, the pre-demethanizer tower needs to improve the working efficiency and effect of the device. Therefore, a pre-demethanizer tower that is convenient for fractionation needs to be proposed.

[0003] Currently used pre-demethanizer towers all have the problems that it is not convenient to perform low-energy-consuming preheating work on the incoming gas mixture. When the gas mixture enters the tower body without being fully heated, it will affect the fractionation efficiency and further affect the working effect of the device. Also, during long-term use, it is not convenient to clean the observation window, making it inconvenient for staff to observe the working conditions and progress in a timely and effective manner, resulting in inconvenient use. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pre-demethanizer tower that is convenient for fractionation, so as to solve the problems in the above background art that currently used pre-demethanizer towers all have, namely, it is not convenient to perform low-energy-consuming preheating work on the incoming gas mixture. When the gas mixture enters the tower body without being fully heated, it will affect the fractionation efficiency and further affect the working effect of the device. Also, during long-term use, it is not convenient to clean the observation window, making it inconvenient for staff to observe the working conditions and progress in a timely and effective manner, resulting in inconvenient use.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A pre-demethanator facilitating fractionation, comprising a tower body, a preheating mechanism, and a cleaning mechanism. Climbing ladders are welded to both sides of the outer wall of the tower body, and observation windows are installed on the outer wall of the tower body. A lower port is opened at the bottom end of the outer wall of the tower body, and an upper port is opened at the top end of the outer wall of the tower body. The preheating mechanism is installed in the inner wall of the upper port. The preheating mechanism includes a positioning groove, a positioning post, a preheating cylinder, a photovoltaic power generation panel, and a circular heating ring. The positioning groove is opened in the inner wall of the upper port, and a positioning post is installed on the inner wall of the positioning groove. The upper end of the outer wall of the positioning post is connected to the preheating cylinder, and photovoltaic power generation panels are installed on both sides of the outer wall of the preheating cylinder. The photovoltaic power generation panels are electrically connected to the circular heating ring, and the circular heating ring is fixed in the inner wall of the preheating cylinder. The cleaning mechanism is installed on the outer side wall of the tower body.

[0006] Preferably, the preheating cylinder is threadedly connected to the positioning groove through the positioning post, and matching threads are provided on the outer wall of the positioning post and the inner wall of the positioning groove.

[0007] Preferably, the circular heating ring is designed as a stacked structure of circular heating rings.

[0008] Preferably, the cleaning mechanism includes a rotating shaft, a control handle, a driving gear disk, a driven gear disk, a pulley, a sliding groove, and a cleaning roller. The rotating shaft is installed on the outer side wall of the tower body, and the control handle is connected to the top end of the outer wall of the rotating shaft. The driving gear disk is connected to the outer wall of the rotating shaft, and the driven gear disk is attached to the outer wall of the driving gear disk. Pulleys are provided on the inner walls of the driven gear disks, and the pulleys are sleeved in the inner walls of the sliding grooves. The sliding grooves are opened on the outer wall of the observation window, and the cleaning roller is installed on the inner wall of the driven gear disk.

[0009] Preferably, the driven gear disk is rotatably structured with the observation window through the pulley, and the outer wall of the observation window is in close contact with the outer wall of the cleaning roller.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. For this pre-demethanator facilitating fractionation, through the setting of the preheating mechanism, such a setting can, under the threaded connection of the positioning post and the positioning groove, conveniently install the preheating cylinder into the upper port, and then connect the preheating cylinder to the gas transmission end. The gas mixture is input into the preheating cylinder through the gas transmission end. The preheating cylinder can heat the circular heating ring under the photovoltaic power generation effect of the photovoltaic power generation panel. The circular heating ring can fully and evenly heat the passing gas mixture. The preheated gas mixture enters the tower body for fractionation and demethanation work, effectively improving the working efficiency and effect of the device, reducing energy consumption, and enhancing the energy conservation and emission reduction ability of the device;

[0012] 2. The pre - demethanizer facilitating fractionation, through the setting of the cleaning mechanism, after being used for a period of time, dust and stains are likely to adhere to the outer wall of the observation window, blocking the visual effect of the observation window. It is possible to rotate the control handle. By means of the control handle cooperating with the rotating shaft to drive the active gear disk to rotate, the active gear disk can drive the engaged driven gear disk to rotate. The driven gear disks are arranged in a one - to - one correspondence with the observation windows and are all engaged with each other. The rotation of the active gear disk can drive the three driven gear disks to rotate simultaneously. The driven gear disks cooperate with the pulleys to move in the sliding grooves, thereby driving the cleaning rollers installed on the inner walls of the driven gear disks to rotate and wipe the observation windows for cleaning. The three observation windows can be cleaned simultaneously, reducing the labor burden of the staff, ensuring the visual observation effect of the device during operation, and effectively improving the operation convenience and working stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a front - view sectional structure schematic diagram of the present utility model;

[0014] Figure 2 is a connection structure schematic diagram of the pre - heating mechanism of the present utility model;

[0015] Figure 3 is a connection structure schematic diagram of the cleaning mechanism of the present utility model.

[0016] In the figure: 1. Tower body; 2. Climbing ladder; 3. Observation window; 4. Lower port; 5. Upper port; 6. Pre - heating mechanism; 601. Positioning groove; 602. Positioning column; 603. Pre - heating cylinder; 604. Photovoltaic power generation panel; 605. Ring heat - retaining ring; 7. Cleaning mechanism; 701. Rotating shaft; 702. Control handle; 703. Active gear disk; 704. Driven gear disk; 705. Pulley; 706. Sliding groove; 707. Cleaning roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a pre - demethanizer tower facilitating fractional distillation, which includes a tower body 1, a pre - heating mechanism 6 and a cleaning mechanism 7. Climbing ladders 2 are welded on both sides of the outer wall of the tower body 1, and observation windows 3 are installed on the outer wall of the tower body 1. A lower port 4 is opened at the bottom end of the outer wall of the tower body 1, and an upper port 5 is opened at the top end of the outer wall of the tower body 1. The pre - heating mechanism 6 is installed in the inner wall of the upper port 5. The pre - heating mechanism 6 includes a positioning groove 601, a positioning column 602, a pre - heating cylinder 603, a photovoltaic power generation panel 604 and a ring heating coil 605. The positioning groove 601 is opened in the inner wall of the upper port 5, and a positioning column 602 is installed on the inner wall of the positioning groove 601. The upper end of the outer wall of the positioning column 602 is connected to a pre - heating cylinder 603, and photovoltaic power generation panels 604 are installed on both sides of the outer wall of the pre - heating cylinder 603. The photovoltaic power generation panel 604 is electrically connected to a ring heating coil 605, and the ring heating coil 605 is fixed in the inner wall of the pre - heating cylinder 603. The pre - heating cylinder 603 is threadedly connected to the positioning groove 601 through the positioning column 602, and matching threads are opened on the outer wall of the positioning column 602 and the inner wall of the positioning groove 601. The ring heating coil 605 is designed as an overlapping type of circular heating coils. Such a setting can, under the threaded connection of the positioning column 602 and the positioning groove 601, conveniently install the pre - heating cylinder 603 into the upper port 5, and then connect the pre - heating cylinder 603 to the gas supply end. The gas mixture is input into the pre - heating cylinder 603 through the gas supply end. The pre - heating cylinder 603 can heat the ring heating coil 605 under the photovoltaic power generation effect of the photovoltaic power generation panel 604. The circular ring heating coil 605 can fully and evenly heat the passing gas mixture. The pre - heated gas mixture enters the tower body 1 for fractional distillation and demethanation work, effectively improving the working efficiency and effect of the device, reducing energy consumption, and enhancing the energy conservation and emission reduction ability of the device;

[0019] The cleaning mechanism 7 is installed on the outer wall of the tower body 1. The cleaning mechanism 7 includes a rotating shaft 701, a control handle 702, a driving gear disk 703, a driven gear disk 704, a pulley 705, a sliding groove 706, and a cleaning roller 707. The rotating shaft 701 is installed on the outer wall of the tower body 1, and a control handle 702 is connected to the top end of the outer wall of the rotating shaft 701. A driving gear disk 703 is connected to the outer wall of the rotating shaft 701, and a driven gear disk 704 is attached to the outer wall of the driving gear disk 703. Pulleys 705 are arranged on the inner walls of the driven gear disks 704, and the pulleys 705 are sleeved in the inner walls of the sliding grooves 706. The sliding grooves 706 are opened on the outer wall of the observation window 3. A cleaning roller 707 is installed on the inner wall of the driven gear disk 704. The driven gear disk 704 forms a rotating structure with the observation window 3 through the pulley 705, and the outer wall of the observation window 3 is closely attached to the outer wall of the cleaning roller 707. With such a setting, after being used for a period of time, dust and stains are likely to adhere to the outer wall of the observation window 3, blocking the visual effect of the observation window 3. The control handle 702 can be rotated. The control handle 702 cooperates with the rotating shaft 701 to drive the driving gear disk 703 to rotate. The driving gear disk 703 can drive the engaged driven gear disk 704 to rotate. The driven gear disks 704 and the observation windows 3 are arranged in a one-to-one correspondence and are all engaged with each other. The rotation of the driving gear disk 703 can drive the three driven gear disks 704 to rotate simultaneously. The driven gear disk 704 cooperates with the pulley 705 to move in the sliding groove 706, thereby driving the cleaning roller 707 installed on the inner wall of the driven gear disk 704 to rotate and wipe the observation window 3. The three observation windows 3 can be cleaned simultaneously, reducing the labor burden of the staff, ensuring the visual observation effect of the device during operation, and effectively improving the operation convenience and working stability of the device.

[0020] Working principle: When it is necessary to use a pre-demethanizer tower that is convenient for fractionation, first, install the device at the designated position. Then, under the threaded connection of the positioning column 602 and the positioning groove 601, the preheating cylinder 603 is conveniently installed into the upper port 5. Then, connect the preheating cylinder 603 to the gas transmission end, and input the gas mixture into the preheating cylinder 603 through the gas transmission end. The preheating cylinder 603 can heat the annular heat ring 605 under the photovoltaic power generation effect of the photovoltaic power generation panel 604. The annular heat ring 605 in a circular ring shape can heat the passing gas mixture fully and evenly. The preheated gas mixture enters the tower body 1 to carry out the fractionation and demethanation work. Among them, after using it for a period of time, dust and stains are likely to adhere to the outer wall of the observation window 3, blocking the visual effect of the observation window 3. It is possible to rotate the control handle 702. The control handle 702 drives the driving gear disk 703 to rotate in cooperation with the rotating shaft 701. The driving gear disk 703 can drive the meshing-connected driven gear disk 704 to rotate. The driven gear disk 704 is arranged in a one-to-one correspondence with the observation window 3, and they are all meshing-connected with each other. The rotation of the driving gear disk 703 can drive the three driven gear disks 704 to rotate simultaneously. The driven gear disk 704 moves in the sliding groove 706 in cooperation with the pulley 705, thereby driving the cleaning roller 707 installed on the inner wall of the driven gear disk 704 to rotate and wipe the observation window 3. The three observation windows 3 can be cleaned simultaneously, reducing the labor burden of the staff and ensuring the visual observation effect of the device during operation. In this way, the use description of a pre-demethanizer tower that is convenient for fractionation is completed.

[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-demethanizer for easy fractionation, characterized in that: The invention comprises a tower body (1), a preheating mechanism (6) and a cleaning mechanism (7); climbing ladders (2) are welded on both sides of the outer wall of the tower body (1); and observation windows (3) are installed on the outer wall of the tower body (1); a lower port (4) is opened at the bottom end of the outer wall of the tower body (1); and an upper port (5) is opened at the top end of the outer wall of the tower body (1); the preheating mechanism (6) is installed in the inner wall of the upper port (5); the preheating mechanism (6) comprises a positioning groove (601), a positioning column (602), a preheating cylinder (603), a photovoltaic power generation panel (604) and a ring heat The tower body (1) is provided with a ring (605), the positioning groove (601) is provided in the inner wall of the upper port (5), and a positioning column (602) is installed on the inner wall of the positioning groove (601), the upper end of the outer wall of the positioning column (602) is connected to a preheating cylinder (603), and photovoltaic power generation panels (604) are installed on both sides of the outer wall of the preheating cylinder (603), the photovoltaic power generation panel (604) is electrically connected to a heat ring (605), and the heat ring (605) is fixed in the inner wall of the preheating cylinder (603), and the cleaning mechanism (7) is installed on the outer wall of the tower body (1).

2. A pre-demethanizer for easy fractionation according to claim 1, characterized in that: The preheating cylinder (603) is threadedly connected to the positioning groove (601) via the positioning column (602), and the outer wall of the positioning column (602) and the inner wall of the positioning groove (601) are both provided with matching threads.

3. A pre-demethanizer for easy fractionation according to claim 1, characterized in that: The heat ring (605) is a circular heating ring stacking design.

4. A pre-demethanizer for easy fractionation according to claim 1, characterized in that: The cleaning mechanism (7) comprises a rotating shaft (701), a control handle (702), a driving toothed disc (703), a driven toothed disc (704), a pulley (705), a slide groove (706) and a cleaning roller (707); the rotating shaft (701) is mounted on the outer wall of the tower body (1), and the top end of the outer wall of the rotating shaft (701) is connected to the control handle (702); the outer wall of the rotating shaft (701) is connected to the driving toothed disc (703), and the outer wall of the driving toothed disc (703) is fitted with the driven toothed disc (704); the inner wall of the driven toothed disc (704) is provided with a pulley (705), and the pulley (705) is sleeved in the inner wall of the slide groove (706); the slide groove (706) is provided on the outer wall of the observation window (3); and the inner wall of the driven toothed disc (704) is provided with a cleaning roller (707).

5. A pre-demethanizer for easy fractionation according to claim 4, characterized in that: The driven toothed disc (704) forms a rotating structure with the observation window (3) via the pulley (705), and the outer wall of the observation window (3) is tightly fitted with the outer wall of the cleaning roller (707).

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