Methanol recovery and wastewater cyclic utilization device for MTBE (Methyl Tert-Butyl Ether) production

Abstract

The utility model discloses a methanol recovery and waste water cyclic utilization device in MTBE production, and relates to the technical field of MTBE production, the methanol recovery and waste water cyclic utilization device comprises a distillation box, a box cover is detachably mounted on the top surface of the distillation box, a plurality of movable rods are slidably mounted in the box cover, the lower ends of the movable rods are connected with an annular heating plate, and the annular heating plate is connected with the distillation box. A lifting plate is connected to the upper ends of the multiple movable rods, a stirring assembly penetrating through an inner cavity of the distillation box is arranged on the top face of the lifting plate, a connecting column is fixedly installed at the upper end of the lifting plate, a lifting frame is fixedly installed at the upper end of the connecting column, and a driving assembly used for driving the lifting frame to ascend and descend is installed on one side of the box cover. According to the utility model, the lifting plate can be driven to lift through the driving assembly, so that the stirring assembly and the annular heating plate can change the acted water layer, and different water layers of wastewater in the distillation box are uniformly heated, thereby ensuring the methanol distillation effect.

Description

Technical Field

[0001] This utility model relates to the field of MTBE production technology, specifically to a device for methanol recovery and wastewater recycling in MTBE production. Background Technology

[0002] In the production process of MTBE (methyl tert-butyl ether), methanol recovery and wastewater treatment are key links to ensure resource recycling and reduce production costs. As an important gasoline additive, the production process of MTBE involves the recycling of a large amount of methanol raw materials. If the methanol-containing wastewater generated after the reaction is directly discharged, it will not only waste resources, but also bring environmental pollution risks.

[0003] Most existing distillation equipment uses a horizontal heating design for the distillation tank, which results in uneven temperature distribution of the wastewater inside the tank. The wastewater at the bottom is prone to overheating and vaporization due to direct heating, while the water in the upper part heats up slowly due to the lag in heat conduction, forming a temperature gradient. This heat exchange defect not only prolongs the distillation cycle and reduces the methanol recovery rate, but also increases energy consumption costs. Especially when treating high-concentration methanol wastewater, local overheating can easily lead to scaling, further affecting the service life of the equipment.

[0004] The prior art includes Chinese Patent Publication No. CN219462544U, which addresses the aforementioned technical problems. The technical solution disclosed in this patent document is as follows: A methanol recovery device for MTBE production equipment controls a rotating motor to drive a power bevel gear to rotate. The meshing between the power bevel gear and the transmission bevel gear drives the rotating shaft to rotate, thereby driving the power gear to rotate. Then, the meshing between the power gear and the transmission gear drives the mounting rod to rotate in a specific direction, thereby driving the stirring rod to rotate and stirring the raw material mixture. This reduces the time required to heat the raw materials and accelerates the evaporation rate of the raw material mixture, thus improving methanol recovery efficiency. However, its central mixing method still easily leads to temperature gradients between different water layers, causing local overheating. Therefore, it is necessary to design a methanol recovery and wastewater recycling device for MTBE production to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for methanol recovery and wastewater recycling in MTBE production, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A device for methanol recovery and wastewater recycling in MTBE production includes a distillation tank, a tank cover detachably installed on the top surface of the distillation tank, a plurality of movable rods slidably installed inside the tank cover, an annular heating plate connected to the lower end of the plurality of movable rods, and a lifting plate connected to the upper end of the plurality of movable rods;

[0008] The top surface of the lifting plate is provided with a stirring component that passes through the inner cavity of the distillation tank. A connecting column is fixedly installed at the upper end of the lifting plate, and a lifting frame is fixedly installed at the upper end of the connecting column. A drive component for driving the lifting frame to rise and fall is installed on one side of the tank cover.

[0009] In the above technical solution, the annular heating plate has a built-in heating wire. By energizing the heating wire, the heating element can drive the lifting plate to rise and fall, thereby changing the water layer that the stirring element and the annular heating plate act on. This ensures that different water layers in the distillation tank are heated evenly, thus guaranteeing the effect of methanol distillation.

[0010] A further improvement of the present invention is that the stirring assembly includes a first motor, a rotating rod is fixedly installed at the output end of the first motor, the rotating rod movably passes through the box cover and the lifting plate, a plurality of stirring plates are fixedly installed on the outer side of the lower end of the rotating rod, and a water pushing plate is fixedly installed on the top and bottom surfaces of the stirring plates.

[0011] Using the above technical solution, turning on the switch of the first motor drives the rotating rod and the stirring plate to rotate, stirring the wastewater in the distillation tank so that the wastewater is fully heated. During the lifting process of the lifting plate, it can drive the first motor, the rotating rod and the stirring plate to rise and fall, thereby stirring different water layers.

[0012] A further improvement of this utility model is that the water-pushing plate is in a horizontal state.

[0013] By adopting the above technical solution, the wastewater is pushed to flow vertically during the lifting and lowering of the push plate, which further ensures that the temperature of each water layer is more uniform.

[0014] A further improvement of this utility model is that: a condenser pipe is connected to the top of the box cover, one end of the condenser pipe is connected to a condenser, and the drain of the condenser is connected to a methanol container through a pipe.

[0015] In the above technical solution, the vaporized methanol is collected after condensation.

[0016] A further improvement of this utility model is that a wastewater drain pipe is connected to the bottom of the distillation tank.

[0017] The above technical solution uses a valve to control the opening and closing of the wastewater discharge pipe, which facilitates the discharge of residual wastewater from the distillation tank and allows for the treatment and reuse of the residual wastewater.

[0018] A further improvement of the present invention is that the drive assembly includes a mounting plate, the mounting plate is fixedly mounted on the top surface of the box cover, a second motor is fixedly mounted on one side of the mounting plate, a swing plate is fixedly mounted on the output end of the second motor, and a limiting rod passing through the inside of the lifting frame is fixedly mounted on one side of the swing plate.

[0019] Using the above technical solution, the switch of the second motor is turned on, thereby driving the limit rod to rotate through the swing plate. Since the limit rod passes through the inside of the lifting frame, it can drive the lifting frame to move up and down repeatedly during the rotation of the limit rod. The lifting frame can drive the lifting plate to rise and fall continuously through the connecting column.

[0020] A further improvement of this utility model is that the limiting rod is cylindrical, and the outer diameter of the limiting rod is appropriately matched with the inner width of the lifting frame.

[0021] Using the above technical solution, the limit rod rotates more smoothly inside the lifting frame.

[0022] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0023] 1. This utility model provides a methanol recovery and wastewater recycling device for MTBE production. By turning on the switch of the second motor, the swing plate drives the limit rod to rotate. Since the limit rod passes through the inside of the lifting frame, it can drive the lifting frame to move up and down repeatedly during the rotation of the limit rod. The lifting frame drives the annular heating plate to move up and down continuously through the connecting column, lifting plate and movable rod, so that the annular heating plate moves to different water layers, thereby fully heating the water layers at different heights and ensuring uniform temperature everywhere.

[0024] 2. This utility model provides a methanol recovery and wastewater recycling device for MTBE production. The device uses a lifting plate to drive a first motor, a rotating rod, a stirring plate, and a pushing plate to continuously rise and fall. The stirring plate stirs different water layers, and the pushing plate pushes the wastewater to flow vertically during the rising and falling process, which further ensures that the temperature of each water layer is more uniform. This allows methanol to be distilled out evenly during the distillation process, preventing scaling and energy waste caused by local overheating. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the rotating rod structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the stirring plate structure of this utility model;

[0030] Figure 5 This is an enlarged structural diagram of point A of this utility model.

[0031] In the diagram: 1. Distillation tank; 2. Tank lid; 3. Condenser; 4. Wastewater drain pipe; 5. Movable rod; 6. Annular heating plate; 7. Lifting plate; 8. First motor; 9. Rotating rod; 10. Stirring plate; 11. Pushing plate; 12. Connecting column; 13. Lifting frame; 14. Mounting plate; 15. Second motor; 16. Swinging plate; 17. Limiting rod. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to embodiments:

[0033] Example 1

[0034] like Figures 1-5 As shown, this utility model provides a methanol recovery and wastewater recycling device for MTBE production, including a distillation tank 1, a tank cover 2 detachably installed on the top surface of the distillation tank 1, a plurality of movable rods 5 slidably installed inside the tank cover 2, a ring heating plate 6 connected to the lower end of the plurality of movable rods 5, and a lifting plate 7 connected to the upper end of the plurality of movable rods 5.

[0035] The top surface of the lifting plate 7 is provided with a stirring component that passes through the inner cavity of the distillation tank 1. A connecting column 12 is fixedly installed on the upper end of the lifting plate 7, and a lifting frame 13 is fixedly installed on the upper end of the connecting column 12. A drive component for driving the lifting frame 13 to rise and fall is installed on one side of the tank cover 2.

[0036] In this embodiment, the annular heating plate 6 has a built-in heating wire. By energizing the heating wire, the heating element can drive the lifting plate 7 to rise and fall, thereby enabling the stirring element and the annular heating plate 6 to change the water layer they act on. This ensures that different water layers of wastewater in the distillation tank 1 are heated evenly, thus guaranteeing the effect of methanol distillation.

[0037] like Figures 1-5As shown, in this embodiment, preferably, the stirring assembly includes a first motor 8. A rotating rod 9 is fixedly installed at the output end of the first motor 8. The rotating rod 9 movably passes through the tank cover 2 and the lifting plate 7. Multiple stirring plates 10 are fixedly installed on the outer side of the lower end of the rotating rod 9. Pushing plates 11 are fixedly installed on the top and bottom surfaces of the stirring plates 10. The pushing plates 11 are in a horizontal state. When the switch of the first motor 8 is turned on, the rotating rod 9 and the stirring plates 10 rotate, stirring the wastewater in the distillation tank 1, so that the wastewater is fully heated. During the lifting process of the lifting plate 7, it can drive the first motor 8, the rotating rod 9 and the stirring plates 10 to rise and fall, thereby stirring different water layers. During the lifting process of the pushing plates 11, the wastewater is pushed to flow in the vertical direction, further ensuring that the temperature of each water layer is more uniform.

[0038] like Figures 1-5 As shown, preferably, the top of the tank cover 2 is connected to a condenser pipe 3, one end of which is connected to a condenser. The drain of the condenser is connected to a methanol container through a pipe. The vaporized methanol is collected after condensation. The bottom of the distillation tank 1 is connected to a wastewater drain pipe 4. The opening and closing of the wastewater drain pipe 4 is controlled by a valve to facilitate the discharge of the remaining wastewater in the cavity of the distillation tank 1. The remaining wastewater is then treated and reused.

[0039] Example 2

[0040] like Figures 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the drive assembly includes a mounting plate 14, which is fixedly mounted on the top surface of the cover 2. A second motor 15 is fixedly mounted on one side of the mounting plate 14, and a swing plate 16 is fixedly mounted on the output end of the second motor 15. A limiting rod 17 passing through the inside of the lifting frame 13 is fixedly mounted on one side of the swing plate 16. The limiting rod 17 is cylindrical, and the outer diameter of the limiting rod 17 is appropriately matched with the inner width of the lifting frame 13.

[0041] In this embodiment, the switch of the second motor 15 is turned on, thereby driving the limit rod 17 to rotate through the swing plate 16. Since the limit rod 17 passes through the inner side of the lifting frame 13, it can drive the lifting frame 13 to move up and down repeatedly during the rotation of the limit rod 17. The lifting frame 13 can drive the lifting plate 7 to rise and fall continuously through the connecting column 12.

[0042] The working principle of the methanol recovery and wastewater recycling device for MTBE production will be explained in detail below.

[0043] like Figures 1-5As shown, this utility model is a methanol recovery and wastewater recycling device for MTBE production. During operation, the switch of the annular heating plate 6 is turned on to heat the wastewater in the distillation tank 1. The switch of the first motor 8 is turned on, driving the rotating rod 9 and the stirring plate 10 to rotate, agitating the wastewater inside the distillation tank 1, ensuring sufficient heating. During this process, the switch of the second motor 15 is turned on, causing the swing plate 16 to drive the limiting rod 17 to rotate. Since the limiting rod 17 passes through the inside of the lifting frame 13, its rotation drives the lifting frame 13 to reciprocate up and down. The lifting frame 13... The connecting column 12, lifting plate 7, and movable rod 5 drive the annular heating plate 6 to continuously rise and fall, allowing the annular heating plate 6 to move to different water layers, thereby fully heating the water layers at different heights and ensuring uniform temperature throughout. During this process, the lifting plate 7 drives the first motor 8, rotating rod 9, stirring plate 10, and pushing plate 11 to continuously rise and fall. The stirring plate 10 stirs the different water layers, and the pushing plate 11 pushes the wastewater to flow vertically during the rising and falling process, further ensuring that the temperature of each water layer is more balanced. This allows methanol to be distilled out evenly during the distillation process, preventing scaling and energy waste caused by local overheating.

[0044] The vaporized methanol distilled is condensed by the condenser tube 3 and the condenser, so that the methanol is finally transported to the container for further processing. As distillation proceeds, the liquid level of the wastewater in the distillation tank 1 continuously decreases. When the wastewater level drops to a certain height, the lifting frame 13 can be controlled to move to the lowest position and the second motor 15 can be turned off, so that the annular heating plate 6 stays at the lowest position for heating, thereby saving energy. After distillation, the remaining wastewater is discharged through the wastewater drain pipe 4 and then treated for reuse, achieving a water-saving effect.

[0045] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A methanol recovery and wastewater recycling device for MTBE production, comprising a distillation tank (1), characterized in that: The top surface of the distillation tank (1) is detachably fitted with a lid (2). Multiple movable rods (5) are slidably installed inside the lid (2). The lower ends of the multiple movable rods (5) are connected to an annular heating plate (6), and the upper ends of the multiple movable rods (5) are connected to a lifting plate (7). The top surface of the lifting plate (7) is provided with a stirring component that passes through the inner cavity of the distillation tank (1). A connecting column (12) is fixedly installed on the upper end of the lifting plate (7). A lifting frame (13) is fixedly installed on the upper end of the connecting column (12). A drive component for driving the lifting frame (13) to rise and fall is installed on one side of the tank cover (2).

2. The methanol recovery and wastewater recycling device for MTBE production according to claim 1, characterized in that: The stirring assembly includes a first motor (8), and a rotating rod (9) is fixedly installed at the output end of the first motor (8). The rotating rod (9) moves through the box cover (2) and the lifting plate (7). Multiple stirring plates (10) are fixedly installed on the outer side of the lower end of the rotating rod (9). Water pushing plates (11) are fixedly installed on the top and bottom surfaces of the stirring plates (10).

3. The methanol recovery and wastewater recycling device for MTBE production according to claim 2, characterized in that: The pusher plate (11) is in a horizontal position.

4. The methanol recovery and wastewater recycling device for MTBE production according to claim 1, characterized in that: The top of the box cover (2) is connected to a condenser pipe (3), one end of which is connected to a condenser. The drain of the condenser is connected to the methanol container through a pipe.

5. The methanol recovery and wastewater recycling device for MTBE production according to claim 1, characterized in that: The bottom of the distillation tank (1) is connected to a wastewater drain pipe (4).

6. The methanol recovery and wastewater recycling device for MTBE production according to claim 1, characterized in that: The drive assembly includes a mounting plate (14), which is fixedly mounted on the top surface of the box cover (2). A second motor (15) is fixedly mounted on one side of the mounting plate (14). A swing plate (16) is fixedly mounted on the output end of the second motor (15). A limiting rod (17) passing through the inside of the lifting frame (13) is fixedly mounted on one side of the swing plate (16).

7. The methanol recovery and wastewater recycling device for MTBE production according to claim 6, characterized in that: The limiting rod (17) is cylindrical, and the outer diameter of the limiting rod (17) is appropriately matched with the inner width of the lifting frame (13).

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