Tail gas removal and recovery device for methanol

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a methanol tail gas removal recovery device which comprises a storage tank and a recovery tank, the recovery tank is located on the right side of the storage tank, sliding grooves are formed in the left side and the right side of the inner side wall of the recovery tank, and movable rods are slidably connected to the inner side walls of the sliding grooves; scraping plates are fixedly connected between the left sides and the right sides of the front side walls and the rear side walls of the movable rods, the scraping plates are annular and attached to the inner side wall of the recycling tank, an annular column is fixedly connected between the inner side walls of the movable rods, and a threaded groove is formed in the inner side wall of the annular column. A fixing rod is fixedly connected between the upper sides of the left side and the right side of the inner side wall of the recycling tank, a servo motor is fixedly connected to the middle of the bottom of the recycling tank, and the power output end of the servo motor penetrates through the bottom of the recycling tank; according to the scheme, methanol on the inner wall of the recovery tank can be conveniently cleaned and recovered, waste is avoided, and the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, in particular to a methanol tail gas recovery device. Background Art

[0002] Methanol, also known as hydroxymethane, wood alcohol or wood spirit, is an organic compound and a colorless liquid. Methanol is very light, highly volatile, colorless, flammable, and has a smell very similar to ethanol. However, unlike ethanol, methanol is highly toxic and cannot be drunk. It is usually used as a solvent, antifreeze, fuel or denaturant. It can also be used to produce biodiesel through ester exchange reactions. Methanol is generally stored in storage tanks, but when methanol is added, since methanol is easily vaporized, gaseous methanol will be discharged along with the exhaust gas. At this time, the exhaust gas needs to be removed through a recovery device and the methanol needs to be recovered.

[0003] The existing methanol tail gas removal usually first dries it through a drying oven to remove trace methanol, hydrogen sulfide, water and other components in the tail gas, and then separates the inert gas and trace hydrogen sulfide in the remaining tail gas through a cooling box. Finally, the methanol is liquefied in a recovery tank and then recovered. However, methanol is easy to adhere to the inner wall of the recovery tank, and the methanol on the inner wall is not easy to clean and recover, which causes waste and increases the cost of use. For this reason, we propose a methanol tail gas removal and recovery device. Utility Model Content

[0004] The utility model aims to provide a methanol tail gas recovery device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0006] The present application is specifically as follows: a methanol tail gas recovery device, comprising a storage tank and a recovery tank, the recovery tank being located on the right side of the storage tank, the inner side wall of the recovery tank having slide grooves on both sides, the inner side wall of the slide groove is slidably connected with a movable rod, and scrapers are fixedly connected between the left and right sides of the front and rear side walls of the movable rod, the scrapers are annular in shape and fit against the inner side wall of the recovery tank, annular columns are fixedly connected between the inner side walls of the movable rod, the inner side walls of the annular columns have threaded grooves, a fixing rod is fixedly connected between the upper sides of the left and right sides of the inner side walls of the recovery tank, a servo motor is fixedly connected to the middle of the bottom of the recovery tank, the power output end of the servo motor passes through the bottom of the recovery tank and is fixedly connected with a threaded rod, and the annular column is threadedly connected to the outer side wall of the threaded rod.

[0007] As the preferred technical solution of this application,

[0008] A liquid inlet pipe is inserted into the left side of the outer wall of the storage tank, and an exhaust valve is connected to the top flange of the storage tank.

[0009] As the preferred technical solution of this application,

[0010] The output end of the exhaust valve is plugged with a first connecting pipe, and the end of the first connecting pipe is plugged with a drying box.

[0011] As the preferred technical solution of this application,

[0012] A second connecting pipe is plugged into the right side wall of the drying box, a cooling box is plugged into the right end of the second connecting pipe, and the cooling box is fixedly connected to the top of the recovery tank through a mounting plate.

[0013] As the preferred technical solution of this application,

[0014] An exhaust pipe is plugged into the top of the cooling box, a transport pipe is plugged into the bottom of the cooling box, and the transport pipe is plugged into the top of the recovery tank.

[0015] As the preferred technical solution of this application,

[0016] A drain pipe is inserted into the front side of the outer wall of the recovery tank, the top of the threaded rod is rotatably connected to the middle of the lower side of the outer wall of the fixed rod, and support legs are fixedly connected to the left and right sides of the bottom of the recovery tank.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] In the scheme of the present application: a slide groove is opened on the inner wall of the recovery tank, a movable rod is connected through the slide groove, an annular column is installed between the movable rods, and a scraper is installed on the outer side of the movable rod. Since the inner side of the annular column is threaded and threadedly connected with the threaded rod, the threaded rod is driven to rotate by a servo motor, the annular column and the movable rod are driven to move longitudinally by the threaded rod, the scraper is driven to move longitudinally by the movable rod, and the inner wall of the recovery tank is cleaned by the scraper, so that methanol is recovered, which facilitates the cleaning and recovery of methanol on the inner wall of the recovery tank, avoids waste, and reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] In the attached picture:

[0021] Figure 1 A three-dimensional diagram of a methanol tail gas recovery device provided in the present application;

[0022] Figure 2 This is an enlarged front and cross-sectional view of a recovery tank of a methanol tail gas recovery device provided in the present application;

[0023] Figure 3 A partially exploded and enlarged view of a methanol tail gas recovery device provided in the present application;

[0024] Figure 4 A three-dimensional enlarged view of a recovery tank of a methanol tail gas recovery device provided in this application.

[0025] In the figure: 100, storage tank; 110, liquid inlet pipe; 120, exhaust valve; 130, first connecting pipe; 140, drying box; 141, second connecting pipe; 150, cooling box; 151, exhaust pipe; 160, transportation pipe; 200, recovery tank; 210, drain pipe; 220, chute; 230, movable rod; 231, scraper; 240, annular column; 250, fixed rod; 260, servo motor; 261, threaded rod; 270, support leg. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4A methanol tail gas recovery device includes a storage tank 100 and a recovery tank 200. The recovery tank 200 is located on the right side of the storage tank 100. Specifically, the recovery tank 200 is placed on the right side of the storage tank 100. The inner wall of the recovery tank 200 is provided with a chute 220 on both sides. The chute 220 is used to connect a movable rod 230. The inner wall of the chute 220 is slidably connected with the movable rod 230. The movable rod 230 is used to support a scraper 231. The scraper 231 is fixedly connected between the left and right sides of the front and rear side walls of the movable rod 230. The inner wall of the recovery tank 200 is cleaned by the scraper 231. The scraper 231 is annular in shape and fits the inner wall of the recovery tank 200. The movable rod 230 is An annular column 240 is fixedly connected between the inner walls, and the annular column 240 is connected to the threaded rod 261 through a threaded groove. The inner wall of the annular column 240 is provided with a threaded groove. A fixed rod 250 is fixedly connected between the upper sides of the left and right sides of the inner wall of the recovery tank 200, and the fixed rod 250 is used to support the threaded rod 261. A servo motor 260 is fixedly connected to the middle of the bottom of the recovery tank 200, and the servo motor 260 is used to drive the threaded rod 261 to rotate. The power output end of the servo motor 260 passes through the bottom of the recovery tank 200 and is fixedly connected to the threaded rod 261. The threaded rod 261 is used to drive the annular column 240 and the movable rod 230 to move longitudinally, and the annular column 240 is threadedly connected to the outer wall of the threaded rod 261.

[0028] See also Figure 1 A liquid inlet pipe 110 is inserted into the left side of the outer wall of the storage tank 100, and an exhaust valve 120 is connected to the top flange of the storage tank 100. Methanol is added into the storage tank 100 through the liquid inlet pipe 110, and the exhaust gas is discharged through the exhaust valve 120.

[0029] See also Figure 1 The output end of the exhaust valve 120 is plugged with a first connecting pipe 130 , and the end of the first connecting pipe 130 is plugged with a drying box 140 , and the exhaust gas is transported to the drying box 140 through the first connecting pipe 130 .

[0030] See also Figure 1 A second connecting pipe 141 is plugged into the right side wall of the drying box 140, and a cooling box 150 is plugged into the right end of the second connecting pipe 141. The cooling box 150 is fixedly connected to the top of the recovery tank 200 through a mounting plate. The tail gas is transported to the cooling box 150 through the second connecting pipe 141, and the methanol is separated through the cooling box 150.

[0031] See also Figure 1 An exhaust pipe 151 is plugged into the top of the cooling box 150 , and a transport pipe 160 is plugged into the bottom of the cooling box 150 . The transport pipe 160 is plugged into the top of the recovery tank 200 , and the exhaust gas is discharged through the exhaust pipe 151 , and the methanol is transported to the recovery tank 200 through the transport pipe 160 .

[0032] See also Figure 1-3 A drain pipe 210 is inserted into the front side of the outer wall of the recovery tank 200, and the top of the threaded rod 261 is rotatably connected to the middle of the lower side of the outer wall of the fixed rod 250. Support legs 270 are fixedly connected to the left and right sides of the bottom of the recovery tank 200. The recovered methanol is collected through the drain pipe 210, and the annular column 240 is driven to move longitudinally by the threaded rod 261, and the recovery tank 200 is supported by the support legs 270.

[0033] Specifically, when the device is used, the methanol tail gas recovery device is first connected to a power source, and methanol is first added to the storage tank 100 through the liquid inlet pipe 110. At this time, the internal space of the storage tank 100 is compressed, and the tail gas is discharged by opening the exhaust valve 120. The tail gas is transported to the drying box 140 through the first connecting pipe 130, and then transported to the cooling box 150 through the second connecting pipe 141. Then, the tail gas is separated from the methanol, and the tail gas is discharged or collected through the exhaust pipe 151, and the methanol is transported to the recovery tank 2 through the transport pipe 160. 00, and then the methanol is recovered by opening the drain pipe 210. At this time, the servo motor 260 is started, and the threaded rod 261 is driven to rotate by the servo motor 260. The threaded rod 261 rotates on the fixed rod 250 and drives the annular column 240 and the movable rod 230 to move longitudinally. At this time, the movable rod 230 slides longitudinally in the slide groove 220 and drives the scraper 231 to move longitudinally. The inner wall of the recovery tank 200 is cleaned by the scraper 231, and the cleaned methanol is discharged through the drain pipe 210, and the use of the device is completed.

Claims

1. A methanol tail gas recovery device, comprising a storage tank (100) and a recovery tank (200), characterized in that: The recovery tank (200) is located on the right side of the storage tank (100), and the inner side wall of the recovery tank (200) is provided with a slide groove (220) on both sides, and the inner side wall of the slide groove (220) is slidably connected to a movable rod (230), and a scraper (231) is fixedly connected between the front and rear side walls and the left and right sides of the movable rod (230), and the scraper (231) is annular in shape and fits on the inner side wall of the recovery tank (200), and the inner side walls of the movable rod (230) are fixedly connected. An annular column (240) is provided with a threaded groove on the inner side wall of the annular column (240); a fixing rod (250) is fixedly connected between the upper sides of the left and right sides of the inner side wall of the recovery tank (200); a servo motor (260) is fixedly connected to the middle of the bottom of the recovery tank (200); a power output end of the servo motor (260) passes through the bottom of the recovery tank (200) and is fixedly connected to a threaded rod (261); and the annular column (240) is threadedly connected to the outer side wall of the threaded rod (261).

2. The methanol tail gas recovery device according to claim 1, characterized in that: A liquid inlet pipe (110) is inserted into the left side of the outer wall of the storage tank (100), and an exhaust valve (120) is connected to the top flange of the storage tank (100).

3. The methanol tail gas recovery device according to claim 2, characterized in that: The output end of the exhaust valve (120) is plugged with a first connecting pipe (130), and the end of the first connecting pipe (130) is plugged with a drying box (140).

4. The methanol tail gas recovery device according to claim 3, characterized in that: A second connecting pipe (141) is plugged into the right side wall of the drying box (140), a cooling box (150) is plugged into the right end of the second connecting pipe (141), and the cooling box (150) is fixedly connected to the top of the recovery tank (200) via a mounting plate.

5. The methanol tail gas recovery device according to claim 4, characterized in that: An exhaust pipe (151) is plugged into the top of the cooling box (150), a transport pipe (160) is plugged into the bottom of the cooling box (150), and the transport pipe (160) is plugged into the top of the recovery tank (200).

6. The methanol tail gas recovery device according to claim 1, characterized in that: A liquid discharge pipe (210) is inserted into the front side of the outer wall of the recovery tank (200), the top of the threaded rod (261) is rotatably connected to the middle of the lower side of the outer wall of the fixed rod (250), and support legs (270) are fixedly connected to the left and right sides of the bottom of the recovery tank (200).

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