Separation and purification system and method for low freezing point alcohol oligomers in light alkanes

Abstract

The present invention discloses a separation and purification system and method for low freezing point alcohol oligomers in light alkanes, and the present invention relates to the technical field of alcohol oligomer separation. The separation and purification system and method for low freezing point alcohol oligomers in light alkanes include a separation barrel, a first air outlet pipe, and a second air outlet pipe. One end of the first air outlet pipe is installed on the side wall of the separation barrel, and one end of the second air outlet pipe is installed on the side wall of the separation barrel. A control component is arranged inside the separation barrel, and the control component is used to control the opening and closing of the first air outlet pipe and the second air outlet pipe. The control component includes a rubber pad and a first support plate. The outer wall of one side of the rubber pad is installed on the outer wall of the first support plate. One end of the first sliding rod is installed at the bottom of the first support plate. It does not need to be controlled by a temperature sensor, avoiding the situation that the measurement result of the sensor is inaccurate due to circuit problems, resulting in incomplete separation of alcohol oligomers and light alkanes.

Description

Technical Field

[0001] The present invention relates to the technical field of separation of alcohol oligomers, and specifically to a separation and purification system and method for low freezing point alcohol oligomers in light alkanes. Background Art

[0002] Alcohols are compounds with one hydroxyl group in aliphatic hydrocarbon molecules, including low-carbon alcohols, high-carbon alcohols, halogenated aliphatic alcohols and other alcohols. Low-carbon alcohols are colorless volatile liquids, and those starting from hexadecanol are solids. The boiling point increases with the increase in the number of carbon atoms. Light alkanes are hydrocarbons with small molecular weights, that is, hydrocarbons with few carbon atoms, usually including methane, ethane, propane, butane, etc. These compounds exist widely in nature and are the main components of fossil fuels such as petroleum and natural gas. Currently, when separating low freezing point alcohol oligomers in light alkanes, distillation separation is usually carried out using their physical effects. However, during the distillation process of the current separation device, most often a temperature sensor is used to measure the temperature inside the separation device, and the fire intensity of the heating unit is controlled based on the measured temperature value. However, when the temperature sensor works in a high-temperature environment, the service life of the signal wire group is not long enough, and errors are likely to occur, affecting the fire intensity control of the heating unit and resulting in a reduction in the efficiency of the separation operation. Therefore, a separation and purification system and method for low freezing point alcohol oligomers in light alkanes are proposed. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a separation and purification system and method for low freezing point alcohol oligomers in light alkanes, which solves the problems that when the temperature sensor works in a high-temperature environment, the service life of the signal wire group is not long enough, errors are likely to occur, affecting the fire intensity control of the heating unit and resulting in a reduction in the efficiency of the separation operation.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A separation and purification system for low freezing point alcohol oligomers in light alkanes, including a separation barrel, a first air outlet pipe, and a second air outlet pipe. One end of the first air outlet pipe is installed on the side wall of the separation barrel, and one end of the second air outlet pipe is installed on the side wall of the separation barrel. A control component is arranged inside the separation barrel, and an auxiliary component is arranged inside the separation barrel. The control component is used to control the opening and closing of the first air outlet pipe and the second air outlet pipe. The control component includes a rubber pad, a first support plate, a first sliding rod, a first sliding block, and a first rotating rod. One outer wall of the rubber pad is installed on the outer wall of the first support plate. One end of the first sliding rod is installed at the bottom of the first support plate. One outer wall of the first sliding rod is installed inside the first sliding block. The outer wall of the first rotating rod is installed inside the first sliding block, and the outer wall of the first rotating rod is installed on the inner wall of the separation barrel.

[0005] Preferably, the control assembly further includes a positioning rod, a second sliding rod, a third sliding rod, and a first sliding sleeve. One end of the positioning rod is installed on the inner wall of the separation barrel. The outer wall of one side of the positioning rod is connected to the inner wall of the first support plate. One end of the second sliding rod is installed on the outer wall of the first rotating rod. The outer wall of one side of the third sliding rod is installed on the top of the first sliding sleeve. The third sliding rod is adapted to the second sliding rod.

[0006] Preferably, the control assembly further includes a first sliding groove, a second sliding groove, a third sliding groove, a second rotating rod, and a motor. The first sliding groove is opened on the outer wall of the first sliding sleeve. The second sliding groove is opened on the inner wall of the first sliding groove. The third sliding groove is opened on the inner wall of the first sliding groove. The second sliding groove is rectangularly arranged. The third sliding groove is circularly arranged. One end of the second rotating rod is T-shaped. The T-shaped end of the second rotating rod is adapted to the second sliding groove. One end of the second rotating rod is installed on the output end of the motor.

[0007] Preferably, the control assembly further includes a fixed sleeve, a first support rod, a fourth sliding rod, a piston, a housing, and a storage box. The inner wall of the fixed sleeve is connected to the outer wall of the first sliding sleeve. The side wall of the fixed sleeve is connected to one end of the first support rod. The outer wall of one side of the first support rod is connected to one end of the fourth sliding rod. The outer wall of the fourth sliding rod is installed on the inner wall of the housing. One end of the fourth sliding rod is installed on the top of the piston.

[0008] Preferably, the outer wall of the piston is installed on the inner wall of the housing. The outer wall of the housing is installed on the inner wall of the separation barrel. The outer wall of one side of the housing is connected to the outer wall of the storage box. Both the storage box and the housing are filled with mercury.

[0009] Preferably, the auxiliary assembly includes a second sliding block, a fifth sliding rod, a sixth sliding rod, a first limiting rod, a first spring, a second support plate, and a rubber sleeve. The inner wall of the second sliding block is installed on the outer wall of the second rotating rod. The outer wall of the fifth sliding rod is installed on the inner wall of the second sliding block. One end of the fifth sliding rod is connected to the outer wall of the sixth sliding rod. The outer wall of one side of the sixth sliding rod is connected to the outer wall of the first limiting rod. The outer wall of the first limiting rod is connected to one end of the first spring.

[0010] Preferably, the other end of the first spring is connected to the inner wall of the second support plate. The outer wall of the first limiting rod is connected to the inner wall of the second support plate. One side of the second support plate is open. The outer wall of the rubber sleeve is connected to the outer wall of the second support plate.

[0011] Preferably, the auxiliary component further includes a seventh sliding rod, a second limiting rod, a guiding rod, a second spring, a connecting rope, a first stirring plate, and a first support shaft. The outer wall of one side of the seventh sliding rod is adapted to the outer wall of the rubber sleeve. The outer wall of one side of the seventh sliding rod is connected to the outer wall of one side of the second limiting rod. The outer wall of one side of the seventh sliding rod is connected to the outer wall of one side of the first stirring plate through the connecting rope. The first stirring plate is installed on the inner wall of the separation barrel through the first support shaft and the torsion spring. The inner wall of the second limiting rod is connected to the outer wall of the guiding rod. One end of the guiding rod is installed on the outer wall of the second support plate. The outer wall of one side of the second limiting rod is connected to one end of the second spring

[0012] The present invention also provides a separation method applicable to the separation and purification system for low freezing point alcohol oligomers in the aforementioned light alkanes, including the following steps:

[0013] S1. Add the light alkanes containing alcohol oligomers into the interior of the separation barrel;

[0014] S2. Keep the second air outlet pipe in the open state and the first air outlet pipe in the closed state, and start heating the light alkanes containing alcohol oligomers;

[0015] S3. Switch the opening and closing states of the second air outlet pipe and the first air outlet pipe through the control component;

[0016] S4. Assist in separating the light alkanes containing alcohol oligomers through the auxiliary component;

[0017] S5. Transport the separated alkane gas to the subsequent process through the second air outlet pipe, and transport the separated alcohol gas to the subsequent process through the first air outlet pipe.

[0018] Preferably, the temperature inside the separation barrel is between 0°C and 350°C.

[0019] The present invention provides a separation and purification system and method for low freezing point alcohol oligomers in light alkanes. Compared with the prior art, it has the following beneficial effects:

[0020] (1). The separation and purification system and method for low freezing point alcohol oligomers in light alkanes, by setting up a separation barrel, a first air outlet pipe, and a second air outlet pipe, adding the light alkanes containing alcohol oligomers into the separation barrel, the gas after the alkanes are vaporized is discharged from the second air outlet pipe, and the gas after the alcohols are vaporized is discharged from the first air outlet pipe, and is cooled and shaped through the subsequent condensation process, can effectively separate the alkanes and alcohols, and shape the separated alkanes and alcohols.

[0021] (2) The separation and purification system and method for low freezing point alcohol oligomers in light alkanes. By setting a rubber pad, a first support plate, a first sliding rod, a first sliding block, a first rotating rod, a second sliding rod, a third sliding rod, a first sliding sleeve, a first sliding groove, a second sliding groove, a third sliding groove, a second rotating rod, a motor, a fixed sleeve, a first support rod, a fourth sliding rod, a piston, a housing, and a storage box, heating the light alkanes containing alcohol oligomers in the separation barrel causes the liquid mercury in the storage box to expand due to heat. The mercury moves from the storage box into the housing, and can automatically control the opening and closing of the first gas outlet pipe and the second gas outlet pipe according to the temperature change in the separation barrel, without the need to control through a temperature sensor, avoiding inaccurate measurement results of the sensor due to circuit problems, and preventing incomplete separation of alcohol oligomers and light alkanes. To a certain extent, the separation efficiency is improved.

[0022] (3) The separation and purification system and method for low freezing point alcohol oligomers in light alkanes. By setting a second sliding block, a fifth sliding rod, a sixth sliding rod, a first limiting rod, a first spring, a second support plate, a rubber sleeve, a seventh sliding rod, a second limiting rod, a guide rod, a second spring, a connecting rope, a first stirring plate, a first support shaft, a pulling rope, a second stirring plate, and a second support shaft, the motor drives the second rotating rod to rotate, and the second rotating rod drives the second sliding block to rotate, enabling the mixed liquid in the separation barrel to be continuously stirred by the first stirring plate and the second stirring plate, making the mixed liquid heat evenly during heating and be quickly heated to the boiling point temperature, so that gases with different boiling points can be separated as soon as possible. To a certain extent, the separation efficiency is improved. Brief Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the present invention;

[0024] Figure 2 is the front cross-sectional view of the separation barrel of the present invention;

[0025] Figure 3 is the front view structural diagram of the first sliding sleeve of the present invention;

[0026] Figure 4 is the side view structural diagram of the second sliding rod of the present invention;

[0027] Figure 5 is the top view structural diagram of the second sliding groove of the present invention;

[0028] Figure 6 is the top view structural diagram of the third sliding groove of the present invention;

[0029] Figure 7 is the top view structural diagram of the fixed sleeve of the present invention;

[0030] Figure 8 is the front view structural diagram of the second spring of the present invention;

[0031] Figure 9 It is the side view structure diagram of the second support plate of the present invention;

[0032] Figure 10 It is the enlarged view of A of the present invention.

[0033] In the figure: 1. Separation barrel; 11. First air outlet pipe; 12. Second air outlet pipe; 2. Rubber pad; 21. First support plate; 22. First sliding rod; 23. First sliding block; 24. First rotating rod; 25. Second sliding rod; 26. Third sliding rod; 27. First sliding sleeve; 28. First sliding groove; 29. Second sliding groove; 210. Third sliding groove; 211. Second rotating rod; 212. Motor; 3. Fixed sleeve; 31. First support rod; 32. Fourth sliding rod; 33. Piston; 34. Shell; 35. Storage box; 4. Second sliding block; 41. Fifth sliding rod; 42. Sixth sliding rod; 43. First limiting rod; 44. First spring; 45. Second support plate; 46. Rubber sleeve; 47. Seventh sliding rod; 48. Second limiting rod; 49. Guide rod; 410. Second spring; 5. Connecting rope; 51. First stirring plate; 52. First support shaft; 53. Pulling rope; 54. Second stirring plate; 55. Second support shaft. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-10 , the present invention provides two technical solutions:

[0036] Embodiment 1

[0037] Separation and purification system for low freezing point alcohol oligomers in light alkanes, including a separation barrel 1, an outlet pipe 11, and an outlet pipe 12. One end of the outlet pipe 11 is fixedly installed on the side wall of the separation barrel 1, and one end of the outlet pipe 12 is fixedly installed on the side wall of the separation barrel 1. A control component is arranged inside the separation barrel 1, and an auxiliary component is arranged inside the separation barrel 1. The control component is used to control the opening and closing of the outlet pipe 11 and the outlet pipe 12. The control component includes a rubber pad 2, a support plate 21, a sliding rod 22, a sliding block 23, and a rotating rod 24. The outer wall of the rubber pad 2 is slidably connected to the inner wall of the separation barrel 1. One side outer wall of the rubber pad 2 is fixedly installed on the outer wall of the support plate 21. One end of the sliding rod 22 is fixedly installed at the bottom of the support plate 21. One side outer wall of the sliding rod 22 is slidably installed inside the sliding block 23. The outer wall of the rotating rod 24 is fixedly installed inside the sliding block 23. The sliding block 23 is eccentrically arranged. The outer wall of the rotating rod 24 is movably installed on the inner wall of the separation barrel 1 through a bearing. The control component also includes a positioning rod, a sliding rod 25, a sliding rod 26, and a sliding sleeve 27. One end of the positioning rod is fixedly installed on the inner wall of the separation barrel. One side outer wall of the positioning rod is slidably connected to the inner wall of the support plate 21. One end of the sliding rod 25 is fixedly installed on the outer wall of the rotating rod 24. One side outer wall of the sliding rod 26 is fixedly installed on the top of the sliding sleeve 27. The sliding rod 26 is slidably adapted to the sliding rod 25. The control component also includes a sliding groove 28, a sliding groove 29, a sliding groove 210, a rotating rod 211, and a motor 212. The sliding groove 28 is opened on the outer wall of the sliding sleeve 27. The sliding groove 29 is opened on the inner wall of the sliding groove 28. The sliding groove 210 is opened on the inner wall of the sliding groove 28. The sliding groove 29 is rectangularly arranged. The sliding groove 210 is circularly arranged. One end of the rotating rod 211 is T-shaped. The T-shaped end of the rotating rod 211 is adapted to the sliding groove 29. One end of the rotating rod 211 is fixedly installed on the output end of the motor 212 through a coupling. The control component also includes a fixed sleeve 3, a support rod 31, a sliding rod 32, a piston 33, a housing 34, and a storage box 35. The inner wall of the fixed sleeve 3 is movably connected to the outer wall of the sliding sleeve 27 through a bearing. The side wall of the fixed sleeve 3 is fixedly connected to one end of the support rod 31. One side outer wall of the support rod 31 is fixedly connected to one end of the sliding rod 32. The outer wall of the sliding rod 32 is slidably installed on the inner wall of the housing 34. One end of the sliding rod 32 is fixedly installed on the top of the piston 33. The outer wall of the piston 33 is slidably installed on the inner wall of the housing 34. The outer wall of the housing 34 is fixedly installed on the inner wall of the separation barrel 1. One side outer wall of the housing 34 is fixedly connected to the outer wall of the storage box 35. Both the storage box 35 and the housing 34 are filled with mercury.

[0038] In use, light alkanes containing alcohol oligomers are added into the separation barrel 1, and then the separation barrel 1 is heated. Utilizing the difference in boiling points between alkanes and alcohols, they are separated. The gasified gas of alkanes is discharged from the second gas outlet pipe 12, and the gasified gas of alcohols is discharged from the first gas outlet pipe 11, and is cooled and shaped through the subsequent condensation process. By heating the light alkanes containing alcohol oligomers in the separation barrel 1, the liquid mercury in the storage box 35 is heated and expands, and the mercury moves from the storage box 35 into the housing 34. As the temperature rises, the mercury in the housing 34 continuously increases. When the temperature reaches the boiling point of the alkanes, the piston 33 is located at Figure 2 the position shown. At this time, the gasified alkanes are continuously discharged from the second gas outlet pipe 12. After the reaction is completed, the temperature in the separation barrel 1 continues to increase. At this time, the mercury entering the housing 34 continues to increase, causing the piston 33 to move upward from Figure 2 the position shown. The piston 33 drives the fourth sliding rod 32 to move, the fourth sliding rod 32 drives the first support rod 31 to move, the first support rod 31 drives the fixed sleeve 3 to move, and the fixed sleeve 3 drives the first sliding sleeve 27 to move. Through the mutual adaptation and sliding cooperation between the first sliding groove 28, the second sliding groove 29 and the second rotating rod 211, the second rotating rod 211 can drive the first sliding sleeve 27 to rotate around the second rotating rod 211 as the axis under the drive of the motor 212. At the same time, the first sliding sleeve 27 can move upward or downward along the first sliding groove 28 under the action of the fixed sleeve 3. While the first sliding sleeve 27 drives the third sliding rod 26 to move upward, it also drives the third sliding rod 26 to rotate. The third sliding rod 26 squeezes the second sliding rod 25, causing the second sliding rod 25 to rotate around the first rotating rod 24 as the axis, thereby driving the first sliding block 23 to rotate around the first rotating rod 24 as the axis. The first sliding block 23 and the first sliding rod 22 are in sliding cooperation, so that the first sliding rod 22 can drive the first support plate 21 to move, and the first support plate 21 drives the rubber pad 2 to move, thereby opening the first gas outlet pipe 11. At the same time, the opening and closing of the second gas outlet pipe 12 are controlled by another set of the first support plate 21, rubber pad 2, first sliding rod 22, and first sliding block 23. At this time, the gasified alcohols will be discharged along the first gas outlet pipe 11. When the temperature in the separation barrel 1 is maintained at the temperature at which alcohols can be gasified, the first sliding sleeve 27 rises to the highest point under the action of the fixed sleeve 3. At this time, the T-shaped end of the second rotating rod 211 slides from the second sliding groove 29 into the third sliding groove 210 along the first sliding groove 28. During this process, the third sliding rod 26 just squeezes the second sliding rod 25 to move, causing the second sliding rod 25 to drive the first rotating rod 24 to rotate, completing the opening of the first gas outlet pipe 11 and the closing of the second gas outlet pipe 12. And the T-shaped end of the second rotating rod 211 will perform a circular motion in the third sliding groove 210, and the first sliding sleeve 27 will not continue to rotate with the second rotating rod 211, and can automatically control the opening and closing of the first gas outlet pipe 11 and the second gas outlet pipe 12 according to the temperature change in the separation barrel 1.

[0039] Embodiment 2

[0040] The technical solution of this embodiment different from that of the first embodiment includes: The auxiliary component includes a second sliding block 4, a fifth sliding rod 41, a sixth sliding rod 42, a first limiting rod 43, a first spring 44, a second support plate 45, and a rubber sleeve 46. The inner wall of the second sliding block 4 is fixedly installed on the outer wall of the second rotating rod 211. The outer wall of the fifth sliding rod 41 is slidably installed on the inner wall of the second sliding block 4. The second sliding block 4 is eccentrically arranged. One end of the fifth sliding rod 41 is fixedly connected to the outer wall of the sixth sliding rod 42. One side outer wall of the sixth sliding rod 42 is fixedly connected to one side outer wall of the first limiting rod 43. The outer wall of the first limiting rod 43 is fixedly connected to one end of the first spring 44. The other end of the first spring 44 is fixedly connected to the inner wall of the second support plate 45. The outer wall of the first limiting rod 43 is slidably connected to the inner wall of the second support plate 45. One end of the first limiting rod 43 penetrates through the inner wall of the second support plate 45 and extends to the inside of the second support plate 45. One side outer wall of the second support plate 45 is provided with an opening. The outer wall of the rubber sleeve 46 is fixedly connected to the outer wall of the second support plate 45 with the opening. The auxiliary component further includes a seventh sliding rod 47, a second limiting rod 48, a guiding rod 49, a second spring 410, a connecting rope 5, a first stirring plate 51, and a first support shaft 52. One side outer wall of the seventh sliding rod 47 is adapted to the outer wall of the rubber sleeve 46. One side outer wall of the seventh sliding rod 47 is fixedly connected to one side outer wall of the second limiting rod 48. One side outer wall of the seventh sliding rod 47 is fixedly connected to one side outer wall of the first stirring plate 51 through the connecting rope 5. The first stirring plate 51 is hingedly installed on the inner wall of the separation barrel 1 through the first support shaft 52 and a torsion spring. The inner wall of the second limiting rod 48 is slidably connected to the outer wall of the guiding rod 49. One end of the guiding rod 49 is fixedly installed on the outer wall of the second support plate 45. One side outer wall of the second limiting rod 48 is fixedly connected to one end of the second spring 410. The other end of the second spring 410 is fixedly installed on one side outer wall of the guiding rod 49. The auxiliary component further includes a pulling rope 53, a second stirring plate 54, and a second support shaft 55. One end of the pulling rope 53 is fixedly installed on the outer wall of the first stirring plate 51. The other end of the pulling rope 53 is fixedly installed on one side outer wall of the second stirring plate 54. The inner wall of the second stirring plate 54 is hingedly installed on the inner wall of the separation barrel 1 through the second support shaft 55 and a torsion spring.

[0041] During use, the motor 212 drives the second rotating rod 211 to rotate. The second rotating rod 211 drives the second sliding block 4 to rotate. The second sliding block 4 and the fifth sliding rod 41 are slidably adapted to each other, so that the fifth sliding rod 41 can drive the sixth sliding rod 42 to move. The first limiting rod 43 limits the sixth sliding rod 42. The second support plate 45 and the first limiting rod 43 are slidably adapted to each other, so that the first limiting rod 43 can make a linear movement in the second support plate 45. The first spring 44 provides a pulling force for the first limiting rod 43 away from the side where the seventh sliding rod 47 is located. The first limiting rod 43 can be driven by the second sliding block 4 to move from Figure 2Move left and right at the shown position. The limiting rod 1-43 continuously pushes the rubber sleeve 46 and the sliding rod 7-47, enabling the sliding rod 7-47 to continuously move from Figure 2 the shown position to the right. The support plate 2-45 provides a supporting force for the guide rod 49. The guide rod 49 provides a supporting force for the limiting rod 2-48 while having a sliding fit therebetween. The limiting rod 2-48 provides a force to the sliding rod 7-47, and the spring 2-410 provides an elastic force to the sliding rod 7-47 towards the side where the limiting rod 1-43 is located, enabling the sliding rod 7-47 to move back and forth. When the sliding rod 7-47 moves to the right from Figure 2 the shown position under an external force, it can squeeze the stirring plate 1-51 to move. The stirring plate 1-51 rotates around the support shaft 1-52 as the axis. At the same time, the stirring plate 1-51 drives the pulling rope 53 to move, and the pulling rope 53 drives the stirring plate 2-54 to move, enabling the stirring plate 2-54 to rotate around the support shaft 2-55 as the axis. When the sliding rod 7-47 resets to Figure 2 the shown position, the stirring plate 1-51 resets to the Figure 2 shown position under the action of the connecting rope 5 and the torsion spring. At the same time, the stirring plate 2-54 resets to the Figure 2 shown position under the action of the torsion spring and the pulling rope 53, enabling the mixed liquid in the separation barrel 1 to be continuously stirred.

[0042] The embodiment of the present invention also provides a separation method for a separation and purification system of low freezing point alcohol oligomers in light alkanes, including the following steps:

[0043] S1. Add light alkanes containing alcohol oligomers into the interior of the separation barrel 1;

[0044] S2. Keep the second air outlet pipe 12 in the open state and the first air outlet pipe 11 in the closed state, and start heating the light alkanes containing alcohol oligomers. The temperature in the separation barrel 1 is between 0°C and 350°C;

[0045] S3. Switch the opening and closing states of the second air outlet pipe 12 and the first air outlet pipe 11 through the control component;

[0046] S4. Assist in separating the light alkanes containing alcohol oligomers through the auxiliary component;

[0047] S5. Transport the separated alkane gas to the subsequent process through the second air outlet pipe 12, and transport the separated alcohol gas to the subsequent process through the first air outlet pipe 11.

[0048] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0049] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Separation and purification system for low freezing point alcohol oligomers in light alkanes, comprising a separation barrel (1), a first gas outlet pipe (11), and a second gas outlet pipe (12), characterized in that: One end of the first air outlet pipe (11) is installed on the side wall of the separation barrel (1), one end of the second air outlet pipe (12) is installed on the side wall of the separation barrel (1), a control component is arranged inside the separation barrel (1), an auxiliary component is arranged inside the separation barrel (1), the control component is used to control the opening and closing of the first air outlet pipe (11) and the second air outlet pipe (12), and the control component includes a rubber pad (2), a first support plate (21), a first sliding rod (22), a first sliding block (23), and a first rotating rod (24). One outer wall of the rubber pad (2) is installed on the outer wall of the first support plate (21), one end of the first sliding rod (22) is installed at the bottom of the first support plate (21), one outer wall of the first sliding rod (22) is installed on the inner wall of the first sliding block (23), the outer wall of the first rotating rod (24) is installed on the inner wall of the first sliding block (23), and the outer wall of the first rotating rod (24) is installed on the inner wall of the separation barrel (1); The control component also includes a positioning rod, a second sliding rod (25), a third sliding rod (26), a first sliding sleeve (27), a first sliding groove (28), a second sliding groove (29), a third sliding groove (210), a second rotating rod (211), a motor (212), a fixing sleeve (3), a first support rod (31), a fourth sliding rod (32), a piston (33), a housing (34), and a storage box (35). One end of the positioning rod is installed on the inner wall of the separation barrel, one outer wall of the positioning rod is connected to the inner wall of the first support plate (21), one end of the second sliding rod (25) is installed on the outer wall of the first rotating rod (24), one outer wall of the third sliding rod (26) is installed on the top of the first sliding sleeve (27), the third sliding rod (26) is adapted to the second sliding rod (25), the first sliding groove (28) is opened on the outer wall of the first sliding sleeve (27), the second sliding groove (29) is opened on the inner wall of the first sliding groove (28), the third sliding groove (210) is opened on the inner wall of the first sliding groove (28), the second sliding groove (29) is rectangular, the third sliding groove (210) is circular, one end of the second rotating rod (211) is T-shaped, the T-shaped end of the second rotating rod (211) is adapted to the second sliding groove (29), one end of the second rotating rod (211) is installed on the output end of the motor (212), the inner wall of the fixing sleeve (3) is connected to the outer wall of the first sliding sleeve (27), the side wall of the fixing sleeve (3) is connected to one end of the first support rod (31), one outer wall of the first support rod (31) is connected to one end of the fourth sliding rod (32), the outer wall of the fourth sliding rod (32) is installed on the inner wall of the housing (34), one end of the fourth sliding rod (32) is installed on the top of the piston (33), the outer wall of the piston (33) is installed on the inner wall of the housing (34), the outer wall of the housing (34) is installed on the inner wall of the separation barrel (1), the side wall of the housing (34) is connected to the outer wall of the storage box (35), and mercury is filled in both the storage box (35) and the housing (34).

2. The separation and purification system for low-freezing-point alcohol oligomers in light alkanes according to claim 1, wherein: The auxiliary component includes a second sliding block (4), a fifth sliding rod (41), a sixth sliding rod (42), a first limiting rod (43), a first spring (44), a second support plate (45), and a rubber sleeve (46). The inner wall of the second sliding block (4) is mounted on the outer wall of the second rotating rod (211). The outer wall of the fifth sliding rod (41) is mounted on the inner wall of the second sliding block (4). One end of the fifth sliding rod (41) is connected to the outer wall of the sixth sliding rod (42). One side outer wall of the sixth sliding rod (42) is connected to one side outer wall of the first limiting rod (43). The outer wall of the first limiting rod (43) is connected to one end of the first spring (44).

3. The separation and purification system for low freezing point alcohol oligomers in light alkanes according to claim 2, characterized in that: The other end of the first spring (44) is connected to the inner wall of the second support plate (45). The outer wall of the first limiting rod (43) is connected to the inner wall of the second support plate (45). One side outer wall of the second support plate (45) is provided with an opening. The outer wall of the rubber sleeve (46) is connected to the outer wall of the second support plate (45).

4. The separation and purification system for low freezing point alcohol oligomers in light alkanes according to claim 1, characterized in that: The auxiliary component further includes a seventh sliding rod (47), a second limiting rod (48), a guiding rod (49), a second spring (410), a connecting rope (5), a first stirring plate (51), and a first support shaft (52). One side outer wall of the seventh sliding rod (47) is adapted to the outer wall of the rubber sleeve (46). One side outer wall of the seventh sliding rod (47) is connected to one side outer wall of the second limiting rod (48). One side outer wall of the seventh sliding rod (47) is connected to one side outer wall of the first stirring plate (51) through the connecting rope (5). The first stirring plate (51) is mounted on the inner wall of the separation barrel (1) through the first support shaft (52) and a torsion spring. The inner wall of the second limiting rod (48) is connected to the outer wall of the guiding rod (49). One end of the guiding rod (49) is mounted on the outer wall of the second support plate (45). One side outer wall of the second limiting rod (48) is connected to one end of the second spring (410).

5. A separation method for a separation and purification system of low freezing point alcohol oligomers in light alkanes as described in any one of claims 1-4, characterized in that, It includes the following steps: S1. Add light alkanes containing alcohol oligomers into the interior of the separation barrel (1). S2. Keep the second air outlet pipe (12) in the open state and the first air outlet pipe (11) in the closed state, and start heating the light alkanes containing alcohol oligomers. S3. Switch the opening and closing states of the second air outlet pipe (12) and the first air outlet pipe (11) through the control component. S4. Assist in separating the light alkanes containing alcohol oligomers through the auxiliary component. S5. Transport the separated alkane gas to the subsequent process through the second air outlet pipe (12), and transport the separated alcohol gas to the subsequent process through the first air outlet pipe (11).

6. The separation method of the separation and purification system for low freezing point alcohol oligomers in light alkanes according to claim 5, characterized in that: The temperature inside the separation barrel (1) is between 0°C and 350°C.

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