Methanol recovery device of esterification reaction kettle

Abstract

The utility model discloses a methanol recovery device of an esterification reaction kettle, which relates to the technical field of recovery, and comprises an esterification reaction kettle body, the top of the right part of the outer wall of the esterification reaction kettle body is fixedly connected with an exhaust pipe, the bottom of the exhaust pipe is fixedly provided with a filtering structure, and the bottom of the filtering structure is fixedly provided with a condensation structure. The bottom of the condensation structure is fixedly connected with a discharging pipe, the bottom end of the discharging pipe is fixedly connected with a storage box, the condensation structure comprises a rectangular box, and the bottom end of the rectangular box is fixedly connected with an air inlet pipe. According to the methanol recovery device of the esterification reaction kettle, cooling water can be stirred under the action of the auxiliary condensation structure, so that the cooling water is in full contact with the condensation pipe, the heat exchange efficiency is improved, the methanol condensation recovery efficiency is improved, the cooling water can be cooled, and the methanol recovery efficiency is improved. And the methanol recovery device can work for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of recovery, in particular to a methanol recovery device for an esterification reaction kettle. Background Art

[0002] Esterification is an important organic chemical reaction, which is the process of converting acid and alcohol into ester and water under the action of catalyst. The esterification reactor has the function of completing esterification and polycondensation at the same time. The esterification reactor is a device used for esterification reaction, which is usually composed of a reactor body, a stirring device, a heating system, a cooling system, a sealing device, a transmission device, etc. The methanol recovery device of the esterification reactor is a device for recovering methanol in the esterification reaction.

[0003] For example, a Chinese patent with publication number CN219941801U discloses a methanol recovery device for an esterification reactor, including a reactor, an output pipe is fixedly connected to the top of one side of the reactor, a condensation barrel is provided on one side of the reactor, and symmetrically distributed connecting pipes are rotatably connected to both sides of the condensation barrel. When recovering methanol, the interior of the esterification reactor is heated by the esterification reactor to evaporate methanol, and the evaporated methanol flows into the connecting pipe through the output pipe and then is diverted through multiple branch pipes. The large gear rotates to drive the connecting pipe to rotate, and at the same time, the circulating pump is started, and the circulating pump conveys cooling water to the conveying pipe and enters the condensation barrel. When the cooling water flows in the cavity, the steam in the multiple branch pipes is condensed by the cooling water, and the steam condenses into small water droplets, which are recovered into the recovery box through the recovery pipe, that is, the recovery of methanol is completed. The steam is diverted by the multiple branch pipes, so that the steam condenses faster, accelerates the recovery, and improves the recovery efficiency.

[0004] The existing technology has the following problems:

[0005] During actual use, the recovery efficiency of methanol gas is low. The natural water used as cooling often fails to fully contact the condenser tube that assists in the condensation of methanol and is circulated by the circulation pump, which leads to low condensation recovery efficiency of methanol. At the same time, after a long period of condensation operation, the temperature of the cooling water rises, resulting in a decrease in the condensation effect, which in turn affects the recovery of methanol. Utility Model Content

[0006] The utility model provides a methanol recovery device for an esterification reaction kettle to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A methanol recovery device for an esterification reactor comprises an esterification reactor body, wherein an exhaust pipe is fixedly connected to the top of the right part of the outer wall of the esterification reactor body, a filter structure is fixedly installed at the bottom of the exhaust pipe, a condensation structure is fixedly installed at the bottom of the filter structure, a discharge pipe is fixedly connected to the bottom of the condensation structure, and a storage box is fixedly connected to the bottom end of the discharge pipe.

[0009] Preferably, the condensation structure includes a rectangular box, the bottom end of which is fixedly connected to an air inlet pipe, a water pump is fixedly installed on the right part of the middle part of the top of the storage box, the rear part of the top of the storage box is fixedly connected to a water tank, the input end of the water pump extends to the bottom of the water tank, the output end of the water pump extends to the bottom of the rectangular box, a plurality of condensation tubes are fixedly connected to the inside of the rectangular box, the top end of the condensation tubes is fixedly connected to the bottom end of the air inlet pipe, and the bottom end of the condensation tubes is fixedly connected to the top end of the discharge pipe.

[0010] Preferably, a water outlet pipe is fixedly connected to the top of the rear of the rectangular box, and the bottom end of the water outlet pipe extends to the top of the inside of the water tank.

[0011] Preferably, a first gear is rotatably connected to the right rear of the bottom of the rectangular box, and a first motor is fixedly installed to the right rear of the bottom of the rectangular box, the output end of the first motor extends to the inside of the rectangular box, and the output end of the first motor is fixedly connected to the axis center of the bottom end of the first gear, and the bottom of the bottom end of the rectangular box is rotatably connected to a first gear ring, the first gear ring is located outside the bottom of the outer wall of the condenser, the outer wall of the first gear ring is meshingly connected with the outer wall of the first gear, and the top of the first gear ring is rotatably connected with four second gears at equal intervals, and the tops of the four second gears are fixedly connected with stirring rods, and the four stirring rods are located outside the condenser, and the bottom end of the rectangular box is fixedly connected with a second gear ring, the outer wall of the second gear ring is meshingly connected with the outer walls of the four second gears, the second gear ring is located outside the bottom of the outer wall of the condenser, and the second gear ring is located inside the first gear ring.

[0012] Preferably, a mounting bracket is fixedly installed on the top of the water tank, the mounting bracket is located on the left side of the water outlet pipe, a second motor is fixedly installed on the top of the mounting bracket, the output end of the second motor extends to the top of the inside of the water tank, and the output end of the second motor is fixedly connected to a fan.

[0013] Preferably, the filtering structure comprises a filter plate, and the filter plate is fixedly connected to the top of the air inlet pipe.

[0014] Preferably, an exhaust fan is fixedly installed at the bottom of the exhaust pipe, a connecting rod is fixedly connected to the bottom end of the exhaust fan, a brush and an arc plate are fixedly connected to the left and right sides of the bottom of the outer wall of the connecting rod respectively, and the brush and the arc plate are both located above the filter plate.

[0015] Preferably, the outer wall of the air inlet pipe is slidably connected to a waste frame, the middle part of the inner bottom of the waste frame is clamped with the top of the outer wall of the air inlet pipe, the bottom of the outer wall of the exhaust pipe is fixedly connected to a fixing plate, and the bottom of the fixing plate is clamped with the top of the waste frame.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] The utility model provides a methanol recovery device for an esterification reaction kettle. Through the function of an auxiliary condensation structure, cooling water can be stirred, thereby allowing the cooling water to fully contact with a condenser tube, thereby improving the efficiency of heat exchange, thereby improving the efficiency of methanol condensation recovery, and at the same time, the cooling water can be cooled, thereby facilitating the long-term operation of the methanol recovery device.

[0018] The utility model provides a methanol recovery device for an esterification reaction kettle. Through the function of a filtering structure, the methanol gas generated by the esterification reaction kettle can be filtered, and then the impurities inside the methanol can be removed to improve the purity of the recovered methanol. At the same time, it can effectively prevent particles in the impurities from adhering to the inner wall of the condenser tube, thereby causing problems such as a reduction in the service life of the condenser tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the rectangular box structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the first gear structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the water tank structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the filter plate structure of the utility model.

[0024] In the figure: 1. esterification reactor body; 2. exhaust pipe; 3. discharge pipe; 4. storage box; 5. condensation structure; 51. water pump; 52. rectangular box; 53. air inlet pipe; 54. condenser; 55. water outlet pipe; 56. water tank; 57. second gear ring; 58. mounting frame; 59. second motor; 510. fan; 511. first motor; 512. first gear; 513. first gear ring; 514. second gear; 515. stirring rod; 6. filtering structure; 61. filter plate; 62. exhaust fan; 63. connecting rod; 64. brush; 65. arc plate; 66. waste frame; 67. fixing plate. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1 As shown, a methanol recovery device for an esterification reactor comprises an esterification reactor body 1, an exhaust pipe 2 is fixedly connected to the top of the right part of the outer wall of the esterification reactor body 1, a filter structure 6 is fixedly installed at the bottom of the exhaust pipe 2, a condensation structure 5 is fixedly installed at the bottom of the filter structure 6, a discharge pipe 3 is fixedly connected to the bottom of the condensation structure 5, and a storage box 4 is fixedly connected to the bottom end of the discharge pipe 3.

[0027] By providing the condensation structure 5, the methanol gas can be cooled and condensed into liquid, which is beneficial for its recovery and improves the recovery efficiency.

[0028] like Figure 1 and Figure 2 As shown, the condensation structure 5 includes a rectangular box 52, the bottom end of the rectangular box 52 is fixedly connected to an air inlet pipe 53, a water pump 51 is fixedly installed on the right part of the middle part of the top of the storage box 4, and a water tank 56 is fixedly connected to the rear part of the top of the storage box 4. The input end of the water pump 51 extends to the bottom of the water tank 56, and the output end of the water pump 51 extends to the bottom of the rectangular box 52. A plurality of condensation tubes 54 are fixedly connected to the inside of the rectangular box 52, and the top end of the condensation tubes 54 is fixedly connected to the bottom end of the air inlet pipe 53, and the bottom end of the condensation tubes 54 is fixedly connected to the top of the discharge pipe 3.

[0029] By providing the condenser 54, the cooling area can be increased, thereby improving the condensation efficiency and further improving the methanol gas recovery efficiency.

[0030] like Figure 2 and Figure 4 As shown, a water outlet pipe 55 is fixedly connected to the top of the rear of the rectangular box 52 , and the bottom end of the water outlet pipe 55 extends to the top of the inside of the water tank 56 .

[0031] By providing the water outlet pipe 55 , the cooling water that has undergone heat exchange with the condenser 54 can be sent back to the water tank 56 , and then water circulation can be achieved under the action of the water pump 51 .

[0032] like Figure 3As shown, the right rear of the bottom of the rectangular box 52 is rotatably connected to the first gear 512, the right rear of the bottom of the rectangular box 52 is fixedly installed with a first motor 511, the output end of the first motor 511 extends to the inside of the rectangular box 52, the output end of the first motor 511 is fixedly connected to the axis of the bottom end of the first gear 512, the bottom of the bottom of the rectangular box 52 is rotatably connected to the first gear ring 513, the first gear ring 513 is located outside the bottom of the outer wall of the condenser 54, the outer wall of the first gear ring 513 and the first gear 512 The outer wall of the first gear ring 513 is meshed with each other, and four second gears 514 are rotatably connected to the top of the first gear ring 513 at equal intervals. The tops of the four second gears 514 are fixedly connected with stirring rods 515, and the four stirring rods 515 are all located outside the condenser 54. The bottom end of the inside of the rectangular box 52 is fixedly connected with a second gear ring 57, and the outer wall of the second gear ring 57 is meshed with the outer walls of the four second gears 514. The second gear ring 57 is located outside the bottom of the outer wall of the condenser 54, and the second gear ring 57 is located inside the first gear ring 513.

[0033] By providing the stirring rod 515 , the cooling water in the rectangular box 52 can be stirred, thereby making the contact between the cooling water and the condenser 54 more complete.

[0034] like Figure 4 As shown, a mounting bracket 58 is fixedly installed on the top of the water tank 56, and the mounting bracket 58 is located on the left side of the water outlet pipe 55. A second motor 59 is fixedly installed on the top of the mounting bracket 58. The output end of the second motor 59 extends to the top of the inside of the water tank 56, and the output end of the second motor 59 is fixedly connected to a fan 510.

[0035] By providing the fan 510, under the action of the second motor 59, the cooling water in the water tank 56 can be air-cooled, thereby reducing its temperature, thereby avoiding the problem of increased cooling water temperature and reduced condensation effect.

[0036] like Figure 5 As shown, the filter structure 6 includes a filter plate 61 , and the filter plate 61 is fixedly connected to the top of the air inlet pipe 53 .

[0037] By providing the filter plate 61 , impurities in the methanol gas generated in the esterification reactor body 1 can be filtered, thereby preliminarily purifying the methanol gas, thereby improving the quality of methanol recovery.

[0038] like Figure 5 As shown, an exhaust fan 62 is fixedly installed at the bottom of the exhaust pipe 2, and a connecting rod 63 is fixedly connected to the bottom end of the exhaust fan 62. A brush 64 and an arc plate 65 are fixedly connected to the left and right sides of the bottom of the outer wall of the connecting rod 63, respectively. The brush 64 and the arc plate 65 are both located above the filter plate 61.

[0039] By providing the brush 64 and the arc plate 65 , the brush 64 can clean the surface of the filter plate 61 to prevent debris from clogging the filter plate 61 , and the arc plate 65 can sweep the debris into the waste frame 66 .

[0040] like Figure 5 As shown, the outer wall of the air inlet pipe 53 is slidably connected to a waste frame 66, the middle of the inner bottom of the waste frame 66 is clamped with the top of the outer wall of the air inlet pipe 53, and the bottom of the outer wall of the exhaust pipe 2 is fixedly connected to a fixing plate 67, and the bottom of the fixing plate 67 is clamped with the top of the waste frame 66.

[0041] By setting up a waste frame 66, the filtered debris can be temporarily stored. After a certain amount is stored, the waste frame 66 can be removed from the bottom of the fixed plate 67 and slid to the top of the rectangular box 52 to clean the inside of the waste frame 66.

[0042] The working principle of the utility model is as follows: when in use, the esterification reactor body 1 is first started. At this time, the temperature of the esterification reactor body 1 rises, and the methanol gas flows through the exhaust pipe 2 to the filter plate 61, is filtered by the filter plate 61, and then flows through the intake pipe 53 to the rectangular box 52. The methanol gas flow drives the exhaust fan 62 to rotate, and then drives the brush 64 and the arc plate 65 to rotate, and then removes the debris on the surface of the filter plate 61. At this time, the debris accumulates in the waste frame 66. When the filtered methanol gas flow flows into the rectangular box 52, the diversion through the condenser 54 is more fully in contact with the cooling water inside the rectangular box 52, and the water pump 51 pumps the water in the water tank 56. The cooling water is pumped into the rectangular box 52, and then flows back to the water tank 56 through the outlet pipe 55, thereby realizing water circulation. While the cooling water is acting, the first motor 511 is started, thereby driving the first gear 512 to rotate. Under the action of the first gear ring 513, the stirring rod 515 rotates inside the rectangular box 52 to stir. At the same time, the meshing action of the second gear 514 and the second gear ring 57 allows the stirring rod 515 to rotate, thereby making the stirring effect more sufficient. During the cooling water reflux process, the second motor 59 is started, thereby driving the fan 510 to rotate, thereby cooling the cooling water returning from the water tank 56.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A methanol recovery device for an esterification reactor, comprising an esterification reactor body (1), characterized in that: An exhaust pipe (2) is fixedly connected to the top of the right part of the outer wall of the esterification reaction kettle body (1), a filter structure (6) is fixedly installed at the bottom of the exhaust pipe (2), a condensation structure (5) is fixedly installed at the bottom of the filter structure (6), a discharge pipe (3) is fixedly connected to the bottom of the condensation structure (5), and a storage box (4) is fixedly connected to the bottom end of the discharge pipe (3).

2. The methanol recovery device for an esterification reaction kettle according to claim 1, characterized in that: The condensation structure (5) comprises a rectangular box (52), the bottom end of the rectangular box (52) is fixedly connected to an air inlet pipe (53), a water pump (51) is fixedly installed at the right part of the middle part of the top end of the storage box (4), the rear part of the top end of the storage box (4) is fixedly connected to a water tank (56), the input end of the water pump (51) extends to the bottom of the water tank (56), the output end of the water pump (51) extends to the bottom of the rectangular box (52), a plurality of condensation pipes (54) are fixedly connected to the inside of the rectangular box (52), the top end of the condensation pipe (54) is fixedly connected to the bottom end of the air inlet pipe (53), and the bottom end of the condensation pipe (54) is fixedly connected to the top end of the discharge pipe (3).

3. The methanol recovery device for an esterification reaction kettle according to claim 2, characterized in that: A water outlet pipe (55) is fixedly connected to the top of the rear of the rectangular box (52), and the bottom end of the water outlet pipe (55) extends to the top of the inside of the water tank (56).

4. The methanol recovery device for an esterification reaction kettle according to claim 2, characterized in that: A first gear (512) is rotatably connected to the right rear of the bottom of the rectangular box (52), and a first motor (511) is fixedly installed to the right rear of the bottom of the rectangular box (52). The output end of the first motor (511) extends into the interior of the rectangular box (52), and the output end of the first motor (511) is fixedly connected to the axis of the bottom end of the first gear (512). The bottom of the bottom of the interior of the rectangular box (52) is rotatably connected to a first gear ring (513), and the first gear ring (513) is located outside the bottom of the outer wall of the condenser tube (54), and the outer wall of the first gear ring (513) and the first gear (512) are connected. The outer wall is meshingly connected, the top of the first gear ring (513) is rotatably connected with four second gears (514) at equal intervals, the tops of the four second gears (514) are fixedly connected with stirring rods (515), and the four stirring rods (515) are all located outside the condenser (54), and the bottom end of the inside of the rectangular box (52) is fixedly connected with a second gear ring (57), the outer wall of the second gear ring (57) is meshingly connected with the outer walls of the four second gears (514), the second gear ring (57) is located outside the bottom of the outer wall of the condenser (54), and the second gear ring (57) is located inside the first gear ring (513).

5. The methanol recovery device for an esterification reaction kettle according to claim 2, characterized in that: A mounting frame (58) is fixedly mounted on the top of the water tank (56), the mounting frame (58) being located to the left of the water outlet pipe (55), a second motor (59) is fixedly mounted on the top of the mounting frame (58), an output end of the second motor (59) extending to the top of the inside of the water tank (56), and a fan (510) is fixedly connected to the output end of the second motor (59).

6. The methanol recovery device for an esterification reaction kettle according to claim 2, characterized in that: The filtering structure (6) comprises a filter plate (61), and the filter plate (61) is fixedly connected to the top of the air inlet pipe (53).

7. The methanol recovery device for an esterification reactor according to claim 6, characterized in that: An exhaust fan (62) is fixedly installed at the bottom of the exhaust pipe (2); a connecting rod (63) is fixedly connected to the bottom end of the exhaust fan (62); a brush (64) and an arc plate (65) are fixedly connected to the left and right sides of the bottom of the outer wall of the connecting rod (63); and the brush (64) and the arc plate (65) are both located above the filter plate (61).

8. The methanol recovery device for an esterification reaction kettle according to claim 2, characterized in that: The outer wall of the air intake pipe (53) is slidably connected to a waste frame (66), the middle part of the inner bottom of the waste frame (66) is clamped with the top of the outer wall of the air intake pipe (53), and the bottom of the outer wall of the exhaust pipe (2) is fixedly connected to a fixing plate (67), the bottom of the fixing plate (67) is clamped with the top of the waste frame (66).

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