A molecular sieve for producing high-purity n-butane and its operating process

Abstract

The present invention discloses a molecular sieve for producing high-purity n-butane and its operating process, and relates to the technical field of molecular sieve use, specifically a molecular sieve for producing high-purity n-butane and its operating process, comprising an adsorption box, the inner cavity of the adsorption box is provided with a chute, the inner movable sleeve of the adsorption box is provided with a storage block, the interior of the storage block is provided with interactive holes that penetrate up and down, and the rear of the storage block is provided with a tooth groove. The molecular sieve for producing high-purity n-butane and its operating process, through the setting of the adsorption box, the inner cavity of the adsorption box is provided with a chute, the inner movable sleeve of the chute is provided with a storage block, and the interior of the storage block is provided with interactive holes, and the driven gear column and the feeding wheel are installed on the outer side of the adsorption box through a support sleeve, so that the molecular sieve can be quickly replaced during the adsorption of the molecular sieve when in use, thereby improving the production efficiency of n-butane.

Description

Technical Field

[0001] The invention relates to the technical field of molecular sieve use, in particular to a molecular sieve for high-purity n-butane production and an operating process thereof. Background Art

[0002] A synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. Its general chemical formula is (M′2M)O·Al2O3·xSiO2·yH2O, where M′ and M are monovalent and divalent cations such as K+, Na+, Ca2+, Ba2+, etc. It has many channels with uniform pore sizes and neatly arranged holes in its structure. Molecular sieves of different pore sizes separate molecules of different sizes and shapes. According to the different molecular ratios of SiO2 and Al2O3, molecular sieves of different pore sizes are obtained. Its models include: 3A (potassium A type), 4A (sodium A type), 5A (calcium A type), 10Z (calcium Z type), 13Z (sodium Z type), Y (sodium Y type), sodium mordenite type, etc. It has high adsorption capacity, strong selectivity, and high temperature resistance. It is widely used in organic chemical industry and petrochemical industry. It is also an excellent adsorbent for coal gas dehydration and is used in waste gas purification. It is also receiving increasing attention. There is a natural aluminosilicate in nature, which has the functions of screening molecules, adsorption, ion exchange and catalysis. This natural substance is called zeolite, and artificially synthesized zeolite is also called molecular sieve. The general formula of the chemical composition of molecular sieve is: (M)2 / nO·Al2O3·xSiO2·pH2O, where M represents metal ions (usually Na when artificially synthesized), n represents the valence of metal ions, x represents the molar number of SiO2, also called the silicon-aluminum ratio, and p represents the molar number of water. The most basic structure of the molecular sieve skeleton is SiO4 and AlO4 tetrahedrons, which are combined by shared oxygen atoms to form a three-dimensional network structure of crystals. This combination form constitutes voids and channels with molecular level and uniform pore size. Due to different structures and forms, the "cage"-shaped spatial holes are divided into "cage" structures such as α, β, γ, hexagonal prisms, and octahedral zeolites.

[0003] In the working process of molecular sieve, after the adsorption is completed, the molecular sieve needs to be desorbed by controlling the temperature and external pressure value, and then the molecular sieve can be used again. In the production process of n-butane, molecular sieve is needed to purify n-butane. The process of adsorption and subsequent desorption purification using traditional technology is slow, which affects the efficiency of the molecular sieve and the purification speed of n-butane. For this reason, we propose a molecular sieve for high-purity n-butane production and its operating process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a molecular sieve for producing high-purity n-butane and an operating process thereof, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a molecular sieve for high-purity n-butane production, comprising an adsorption box, an inner cavity of the adsorption box is provided with a slide groove, an internal movably sleeved with a storage block, an internal portion of the storage block is provided with interactive holes that pass through up and down, a tooth groove is provided at the rear of the storage block, a first servo motor is fixedly installed at the rear of the adsorption box, a driving gear is fixedly connected below the output shaft of the first servo motor, a support sleeve is fixedly installed at the rear of the adsorption box, a driven gear column is mounted inside the support sleeve through a bearing, a feed wheel is fixedly mounted outside the driven gear column, and a driving gear is movably mounted outside the driven gear column.

[0006] Optionally, a desorption box is fixedly installed on the left and right sides of the adsorption box, a control module is fixedly installed on the top of the right desorption box, a heating tube is fixedly sleeved on the outside of the right desorption box, a supporting telescopic column is fixedly installed on the top of the right desorption box, a connecting plate is fixedly connected to the outer side of the output shaft of the supporting telescopic column, and a supporting plate is fixedly installed on the inner side of the connecting plate.

[0007] Optionally, a pressure-controlling telescopic column is fixedly installed above the left desorption box, a sealing ring is fixedly sleeved on the top of the left desorption box, a loading telescopic column is fixedly installed above the left desorption box, and a first electromagnetic block is fixedly installed on the left end of the left desorption box.

[0008] Optionally, a circulation frame is fixedly installed below the adsorption box and the two desorption boxes, a discharge pipe is fixedly installed on the right side of the circulation frame, support blocks are fixedly installed on the front and rear sides of the circulation frame, a threaded column is mounted on the inner side of the support block through a bearing sleeve, a ball screw block is movably sleeved on the outer side of the threaded column, a second electromagnetic block is fixedly installed on the inner side of the ball screw block, a transmission gear is fixedly installed on the left ends of the two threaded columns, and a second servo motor is fixedly installed on the left side of the circulation frame.

[0009] Optionally, the material storage block is movably mounted inside the slide groove, the upper and lower walls of the material storage block are in contact with the upper and lower walls of the slide groove, and the driving gear is movably mounted outside the driven gear column.

[0010] Optionally, the inner side of the support plate extends to the inner cavity of the desorption box, and the top surface of the support plate and the bottom surface of the slide groove are located on the same horizontal plane.

[0011] Optionally, the output shafts of the feeding telescopic column and the pressure-controlling telescopic column extend downward to the inner cavity of the desorption box, and the sealing ring is movably sleeved on the outside of the output shafts of the pressure-controlling telescopic column and the feeding telescopic column.

[0012] Optionally, the output shaft of the second servo motor is fixedly connected to a transmission gear, and the outer movable sleeves of the three transmission gears are provided with a second transmission chain.

[0013] An operating process for a molecular sieve for producing high-purity n-butane comprises the following steps:

[0014] S1. First, pour the raw material into the adsorption box from the top, and then complete the adsorption through the molecular sieve particles inside the storage block. After the molecular sieve inside the storage block is adsorbed, control the output shaft of the feeding telescopic column above the left desorption box to extend, so that the output shaft of the feeding telescopic column moves downward, so that the output shaft of the feeding telescopic column is adsorbed with the storage block through the action of the suction cup, and then control the output shaft of the feeding telescopic column to retract, so that the output shaft of the feeding telescopic column drives the storage block to move upward, so that the storage block moves to be parallel to the internal storage block of the adsorption box. position, and then controls the first electromagnetic block to start, so that the first electromagnetic block pushes the storage block inside the left desorption box to the right, and at the same time starts the first servo motor, so that the output shaft of the first servo motor drives the driving gear to rotate, and the driving gear drives the two driven gear columns to rotate synchronously through the first transmission chain, so that the driven gear column drives the feeding wheel to rotate, and the rotation of the feeding wheel controls the storage block in the inner cavity of the adsorption box to move to the right through the tooth groove on the outside of the storage block, so that the storage block moves to the right under the restriction of the slide groove, and at the same time, the inner cavity storage block of the left desorption box moves to the inner cavity of the adsorption box.

[0015] S2, move the material storage block in the inner cavity of the adsorption box to the inside of the right desorption box, then control the output shaft of the left pressure-controlled telescopic column to extend, so that the output shaft of the pressure-controlled telescopic column compresses the space inside the two desorption boxes and the circulation frame, and at the same time control the control module on the right to start, so that the control module controls the temperature of the desorption box to raise the inner cavity of the right desorption box to a suitable temperature, then desorb the molecular sieve inside the material storage block, open the seal outside the discharge pipe, so that the purified n-butane flows out of the discharge pipe, and then close the seal outside the discharge pipe.

[0016] S3, control the output shaft of the supporting telescopic column to extend, so that the output shaft of the supporting telescopic column extends, so that the output shaft of the supporting telescopic column controls the connecting plate to move outward, so that the connecting plate drives the supporting plate to move outward, and then the storage block falls downward, so that the storage block falls into the inner cavity of the circulation frame, and the second servo motor is controlled to start, so that the output shaft of the second servo motor controls the two threaded columns to rotate synchronously through the transmission gear and the second transmission chain, so that the threaded column controls the ball screw block to move to the left, and the movement of the ball screw block to the left will drive the second electromagnetic block to move to the left, so that the second electromagnetic block controls the storage block to move to the left, so that the storage block moves to the bottom of the desorption box on the right, and the second electromagnetic block is controlled to close.

[0017] The present invention provides a molecular sieve for high-purity n-butane production and an operating process thereof, which has the following beneficial effects:

[0018] 1. The molecular sieve for high-purity n-butane production and its operation process are as follows: through the setting of an adsorption box, a chute is provided in the inner cavity of the adsorption box, a storage block is provided in the movable sleeve inside the chute, and interactive holes are provided inside the storage block, and a tooth groove is provided on the left side of the storage block. A first servo motor is fixedly installed on the outside of the adsorption box, and a driving gear is fixedly connected to the bottom of the output shaft of the first servo motor. A driven gear column and a feeding wheel are installed on the outside of the adsorption box through a supporting sleeve. When in use, the molecular sieve can be quickly replaced during the adsorption process of the molecular sieve, thereby improving the production efficiency of n-butane.

[0019] 2. The molecular sieve for high-purity n-butane production and its operating process are as follows: desorption boxes are arranged on the left and right sides of the adsorption box, and a control module is fixedly installed on the top of the right desorption box, so that the outside of the desorption box is fixedly sleeved with a heating tube, and at the same time, a pressure-controlled telescopic column is fixedly installed on the top of the left desorption box, so that the inside of the top of the desorption box is movably sleeved on the outside of the pressure-controlled telescopic column through a sealing ring, so that the temperature and pressure values ​​inside the circulation frame and the two desorption boxes are conveniently controlled, and the desorption of the molecular sieve is convenient and fast.

[0020] 3. The molecular sieve for high-purity n-butane production and its operating process are characterized by fixing a supporting telescopic column on the top of the right desorption box, fixing a connecting plate on the outside of the output shaft of the supporting telescopic column, fixing a supporting plate on the inside of the connecting plate, and providing a supporting block, a threaded column, a ball screw block, and a second electromagnetic block on the outside of the circulation frame. Meanwhile, a first electromagnetic block is installed on the left end of the left desorption box, and a loading telescopic column is fixedly installed on the top of the desorption box. When in use, it is convenient to control the recycling of the storage block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the splitting of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the material storage block of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the heating tube of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a pressure-controlled telescopic column of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the circulation frame of the present invention.

[0027] In the figure: 1. adsorption box; 2. slide groove; 3. storage block; 4. interactive hole; 5. tooth groove; 6. support sleeve; 7. driven gear column; 8. feeding wheel; 9. first transmission chain; 10. first servo motor; 11. driving gear; 12. desorption box; 13. control module; 14. heating tube; 15. supporting telescopic column; 16. connecting plate; 17. supporting plate; 18. first electromagnetic block; 19. sealing ring; 20. feeding telescopic column; 21. pressure control telescopic column; 22. circulation frame; 23. discharge pipe; 24. support block; 25. threaded column; 26. ball screw block; 27. second electromagnetic block; 28. transmission gear; 29. ​​second servo motor; 30. second transmission chain. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figures 1 to 3 The present invention provides a technical solution: a molecular sieve for high-purity n-butane production, comprising an adsorption box 1, an inner cavity of the adsorption box 1 is provided with a chute 2, a storage block 3 is movably sleeved inside the adsorption box 1, the storage block 3 is movably sleeved inside the chute 2, the upper and lower walls of the storage block 3 are fitted with the upper and lower walls of the chute 2, and the driving gear 11 is movably sleeved on the outside of the driven gear column 7. By providing the chute 2 inside the adsorption box 1, it is convenient to make the storage block 3 move left and right inside the adsorption box 1, which is convenient for the use of the device, and at the same time, it can effectively prevent the storage block 3 from falling downward inside the adsorption box 1, affecting the adsorption efficiency of the molecular sieve inside the storage block 3, and affecting the normal use of the molecular sieve.

[0030] The storage block 3 is provided with interactive holes 4 which penetrate up and down, and the rear of the storage block 3 is provided with tooth grooves 5. A first servo motor 10 is fixedly installed at the rear of the adsorption box 1, and a driving gear 11 is fixedly connected to the lower part of the output shaft of the first servo motor 10. The opening of the interactive holes 4 facilitates the molecular sieve in the inner cavity of the storage block 3 to interactively adsorb the external n-butane raw material. At the same time, the storage block 3 is convenient for limiting the position of the molecular sieve, convenient for controlling the movement of the molecular sieve, and convenient for moving the bulk granular molecular sieve. A support sleeve 6 is fixedly installed at the rear of the adsorption box 1, and a driven gear column 7 is provided inside the support sleeve 6 through a bearing sleeve. The external fixed sleeve is provided with a feeding wheel 8, and the external movable sleeve of the driven gear column 7 is provided with a driving gear 11. The first servo motor 10 is started, so that the output shaft of the first servo motor 10 drives the driving gear 11 to rotate, and the driving gear 11 will drive the two driven gear columns 7 to rotate synchronously through the first transmission chain 9, so that the driven gear column 7 drives the feeding wheel 8 to rotate. The rotation of the feeding wheel 8 will control the storage block 3 in the inner cavity of the adsorption box 1 to move to the right through the tooth groove 5 on the outside of the storage block 3, so that the storage block 3 moves to the right under the restriction of the slide groove 2, and at the same time, the inner cavity storage block 3 of the left desorption box 12 will move to the inner cavity of the adsorption box 1, so as to facilitate the movement of the storage block 3.

[0031] See also Figures 4 to 5 The desorption box 12 is fixedly installed on the left and right sides of the adsorption box 1, and the inner side of the support plate 17 extends to the inner cavity of the desorption box 12. The top surface of the support plate 17 and the bottom surface of the chute 2 are located on the same horizontal plane. The setting of the support plate 17 plays a role in supporting the storage block 3, which is convenient for limiting the storage block 3 inside the desorption box 12, so that the storage block 3 is suspended in the air, avoiding the accumulation of the storage block 3, affecting the desorption efficiency of the storage block 3, and affecting the normal use of the device. At the same time, the top surface of the support plate 17 and the bottom surface of the chute 2 are located on the same horizontal plane, which is convenient for ensuring that the support plate 17 stably supports the storage block 3. A control module 13 is fixedly installed above the right desorption box 12, and the external fixed set of the right desorption box 12 There is a heating tube 14, and a supporting telescopic column 15 is fixedly installed above the right desorption box 12. The outer side of the output shaft of the supporting telescopic column 15 is fixedly connected with a connecting plate 16, and the inner side of the connecting plate 16 is fixedly installed with a supporting plate 17. The output shaft of the supporting telescopic column 15 is controlled to extend, so that the output shaft of the supporting telescopic column 15 extends, and the output shaft of the supporting telescopic column 15 controls the connecting plate 16 to move outward, so that the connecting plate 16 drives the supporting plate 17 to move outward, and then the storage block 3 falls downward. The arrangement of the supporting telescopic column 15, the connecting plate 16, and the support plate 17 facilitates the lowering of the storage block 3, so that the storage block 3 moves downward inside the desorption box 12 to the inner cavity of the circulation frame 22.

[0032] A pressure-controlled telescopic column 21 is fixedly installed above the left desorption box 12. The output shafts of the feeding telescopic column 20 and the pressure-controlled telescopic column 21 extend downward to the inner cavity of the desorption box 12. The sealing ring 19 is movably sleeved on the outside of the output shafts of the pressure-controlled telescopic column 21 and the feeding telescopic column 20. The setting of the sealing ring 19 plays a role in sealing the output shafts of the pressure-controlled telescopic column 21 and the feeding telescopic column 20 when in use, so as to avoid air leakage in the left desorption box 12, which makes it difficult to form a seal between the two desorption boxes 12 and the inner cavity of the circulation frame 22, affecting the molecular sieve. Desorption efficiency, a sealing ring 19 is fixedly mounted on the top of the left desorption box 12, a loading telescopic column 20 is fixedly mounted on the top of the left desorption box 12, and a first electromagnetic block 18 is fixedly mounted on the left end of the left desorption box 12. The first electromagnetic block 18 is controlled to start, so that the first electromagnetic block 18 pushes the storage block 3 inside the left desorption box 12 to the right. The setting of the first electromagnetic block 18 plays a role in pushing the storage block 3 when in use, and assists the storage block 3 to move to the right, so that the storage block 3 on the right moves to the inner cavity of the adsorption box 1.

[0033] See also Figure 6 A circulation frame 22 is fixedly installed below the adsorption box 1 and the two desorption boxes 12, a discharge pipe 23 is fixedly installed on the right side of the circulation frame 22, and support blocks 24 are fixedly installed on the front and rear sides of the circulation frame 22. A threaded column 25 is provided on the inner side of the support block 24 through a bearing sleeve. The arrangement of the support block 24 and the threaded column 25 mainly plays the role of supporting and controlling the movement of the ball screw block 26 when in use, thereby controlling the ball screw block 26 to drive the second electromagnetic block 27 to move to the left.

[0034] The outer movable sleeve of the threaded column 25 is provided with a ball screw block 26, and the inner side of the ball screw block 26 is fixedly installed with a second electromagnetic block 27. The left ends of the two threaded columns 25 are fixedly installed with a transmission gear 28. The left side of the circulation frame 22 is fixedly installed with a second servo motor 29. The second servo motor 29 is controlled to start, so that the output shaft of the second servo motor 29 controls the two threaded columns 25 to rotate synchronously through the transmission gear 28 and the second transmission chain 30, so that the threaded column 25 controls the ball screw block 26 to move to the left. The output shaft of the second servo motor 29 is fixedly connected with the transmission gear 28. The outer movable sleeve of the three transmission gears 28 is provided with a second transmission chain 30. The leftward movement of the ball screw block 26 will drive the second electromagnetic block 27 to move to the left, so that the second electromagnetic block 27 controls the storage block 3 to move to the left, so that the storage block 3 moves to the bottom of the desorption box 12 on the right side, and the second electromagnetic block 27 is controlled to be closed. The transmission gear 28 and the second transmission chain 30 facilitate the second servo motor 29 to control the synchronous rotation of the two threaded columns 25.

[0035] An operating process for a molecular sieve for producing high-purity n-butane comprises the following steps:

[0036] S1. First, pour the raw material into the adsorption box 1 from the top, and then complete the adsorption through the molecular sieve particles inside the storage block 3. Then, after the molecular sieve inside the storage block 3 is adsorbed, control the output shaft of the loading telescopic column 20 above the left desorption box 12 to extend, so that the output shaft of the loading telescopic column 20 moves downward, so that the output shaft of the loading telescopic column 20 is adsorbed with the storage block 3 through the action of the suction cup, and then control the output shaft of the loading telescopic column 20 to be retracted, so that the output shaft of the loading telescopic column 20 drives the storage block 3 to move upward, so that the storage block 3 moves to a position parallel to the internal storage block 3 of the adsorption box 1, and then The first electromagnetic block 18 is controlled to start, so that the first electromagnetic block 18 pushes the storage block 3 inside the left desorption box 12 to the right, and at the same time, the first servo motor 10 is started, so that the output shaft of the first servo motor 10 drives the driving gear 11 to rotate, and the driving gear 11 drives the two driven gear columns 7 to rotate synchronously through the first transmission chain 9, so that the driven gear columns 7 drive the feeding wheel 8 to rotate, and the rotation of the feeding wheel 8 will control the storage block 3 in the inner cavity of the adsorption box 1 to move to the right through the tooth groove 5 on the outside of the storage block 3, so that the storage block 3 moves to the right under the restriction of the slide groove 2, and at the same time, the inner cavity storage block 3 of the left desorption box 12 will move to the inner cavity of the adsorption box 1.

[0037] S2, move the material storage block 3 in the inner cavity of the adsorption box 1 to the inside of the right desorption box 12, then control the output shaft of the left pressure-controlled telescopic column 21 to extend, so that the output shaft of the pressure-controlled telescopic column 21 compresses the space inside the two desorption boxes 12 and the circulation frame 22, and at the same time control the control module 13 on the right to start, so that the control module 13 controls the temperature of the desorption box 12 to raise the inner cavity of the right desorption box 12 to a suitable temperature, then desorb the molecular sieve inside the material storage block 3, open the seal outside the discharge pipe 23, so that the purified n-butane flows out of the discharge pipe 23, and then close the seal outside the discharge pipe 23.

[0038] S3, control the output shaft of the supporting telescopic column 15 to extend, so that the output shaft of the supporting telescopic column 15 extends, and the output shaft of the supporting telescopic column 15 controls the connecting plate 16 to move outward, so that the connecting plate 16 drives the supporting plate 17 to move outward, and then the storage block 3 falls downward, so that the storage block 3 falls into the inner cavity of the circulation frame 22, and the second servo motor 29 is controlled to start, so that the output shaft of the second servo motor 29 controls the two threaded columns 25 to rotate synchronously through the transmission gear 28 and the second transmission chain 30, so that the threaded column 25 controls the ball screw block 26 to move to the left, and the left movement of the ball screw block 26 will drive the second electromagnetic block 27 to move to the left, so that the second electromagnetic block 27 controls the storage block 3 to move to the left, so that the storage block 3 moves to the bottom of the desorption box 12 on the right, and the second electromagnetic block 27 is controlled to be closed.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for producing high-purity n-butane using molecular sieves, comprising an adsorption box (1), characterized in that: The inner cavity of the adsorption box (1) is provided with a slide groove (2), the interior of the adsorption box (1) is movably sleeved with a storage block (3), the interior of the storage block (3) is provided with an interactive hole (4) that passes through from top to bottom, the rear of the storage block (3) is provided with a tooth groove (5), the rear of the adsorption box (1) is fixedly installed with a first servo motor (10), the lower part of the output shaft of the first servo motor (10) is fixedly connected with a driving gear (11), the rear of the adsorption box (1) is fixedly installed with a support sleeve (6), the interior of the support sleeve (6) is sleeved with a driven gear column (7) through a bearing, the exterior of the driven gear column (7) is fixedly sleeved with a feeding wheel (8), and the exterior of the driven gear column (7) is movably sleeved with a driving gear (11); A desorption box (12) is fixedly mounted on the left and right sides of the adsorption box (1), a control module (13) is fixedly mounted above the right desorption box (12), a heating tube (14) is fixedly sleeved on the outside of the right desorption box (12), a supporting telescopic column (15) is fixedly mounted above the right desorption box (12), a connecting plate (16) is fixedly connected to the outer side of the output shaft of the supporting telescopic column (15), and a supporting plate (17) is fixedly mounted on the inner side of the connecting plate (16); A pressure-controlling telescopic column (21) is fixedly mounted above the desorption box (12) on the left side, a sealing ring (19) is fixedly sleeved on the top of the desorption box (12) on the left side, a loading telescopic column (20) is fixedly mounted above the desorption box (12) on the left side, and a first electromagnetic block (18) is fixedly mounted on the left end of the desorption box (12) on the left side; A circulation frame (22) is fixedly installed below the adsorption box (1) and the two desorption boxes (12); a discharge pipe (23) is fixedly installed on the right side of the circulation frame (22); support blocks (24) are fixedly installed on the front and rear sides of the circulation frame (22); a threaded column (25) is sleeved on the inner side of the support block (24) through a bearing sleeve; a ball screw block (26) is movably sleeved on the outer side of the threaded column (25); a second electromagnetic block (27) is fixedly installed on the inner side of the ball screw block (26); a transmission gear (28) is fixedly installed on the left ends of the two threaded columns (25); and a second servo motor (29) is fixedly installed on the left side of the circulation frame (22); The material storage block (3) is movably mounted inside the slide groove (2), the upper and lower walls of the material storage block (3) are in contact with the upper and lower walls of the slide groove (2), and the driving gear (11) is movably mounted outside the driven gear column (7); The inner side of the support plate (17) extends to the inner cavity of the desorption box (12), and the top surface of the support plate (17) and the bottom surface of the chute (2) are located on the same horizontal plane; The output shafts of the feeding telescopic column (20) and the pressure-controlling telescopic column (21) extend downward to the inner cavity of the desorption box (12), and the sealing ring (19) is movably sleeved on the outside of the output shafts of the pressure-controlling telescopic column (21) and the feeding telescopic column (20); The output shaft of the second servo motor (29) is fixedly connected to a transmission gear (28), and the outer movable sleeves of the three transmission gears (28) are provided with a second transmission chain (30).

2. The operating process of the device for producing high-purity n-butane using molecular sieve according to claim 1, characterized in that: The following steps are involved: S1. First, the raw material is poured into the adsorption box (1) from the top of the adsorption box (1), and then the molecular sieve particles in the storage block (3) are used to complete the adsorption. Then, after the molecular sieve in the storage block (3) is adsorbed, the output shaft of the loading telescopic column (20) above the left desorption box (12) is controlled to extend, so that the output shaft of the loading telescopic column (20) moves downward, so that the output shaft of the loading telescopic column (20) is adsorbed with the storage block (3) through the action of the suction cup, and then the output shaft of the loading telescopic column (20) is controlled to be retracted, so that the output shaft of the loading telescopic column (20) drives the storage block (3) to move upward, so that the storage block (3) moves to a position parallel to the storage block (3) inside the adsorption box (1), and then the first electromagnetic block is controlled to move. (18) is started, so that the first electromagnetic block (18) pushes the storage block (3) inside the left desorption box (12) to the right, and at the same time the first servo motor (10) is started, so that the output shaft of the first servo motor (10) drives the driving gear (11) to rotate, and the driving gear (11) drives the two driven gear columns (7) to rotate synchronously through the first transmission chain (9), so that the driven gear columns (7) drive the feeding wheel (8) to rotate, and the rotation of the feeding wheel (8) controls the storage block (3) in the inner cavity of the adsorption box (1) to move to the right through the tooth groove (5) outside the storage block (3), so that the storage block (3) moves to the right under the restriction of the slide groove (2), and at the same time the inner cavity storage block (3) of the left desorption box (12) moves to the inner cavity of the adsorption box (1); S2, moving the material storage block (3) in the inner cavity of the adsorption box (1) to the inside of the right-hand desorption box (12), then controlling the output shaft of the left-hand pressure-controlled telescopic column (21) to extend, so that the output shaft of the pressure-controlled telescopic column (21) compresses the space inside the two desorption boxes (12) and the circulation frame (22), and at the same time controlling the right-hand control module (13) to start, so that the control module (13) controls the desorption box (12) to heat up, so that the inner cavity of the right-hand desorption box (12) is heated to a suitable temperature, then desorbing the molecular sieve inside the material storage block (3), opening the seal outside the discharge pipe (23), so that the purified n-butane flows out of the discharge pipe (23), and then closing the seal outside the discharge pipe (23); S3, controlling the output shaft of the supporting telescopic column (15) to extend, so that the output shaft of the supporting telescopic column (15) extends, so that the output shaft of the supporting telescopic column (15) controls the connecting plate (16) to move outward, so that the connecting plate (16) drives the supporting plate (17) to move outward, and then the material storage block (3) falls downward, so that the material storage block (3) falls into the inner cavity of the circulation frame (22), and controlling the second servo motor (29) to start, so that the output shaft of the second servo motor (29) controls the two threaded columns (25) to rotate synchronously through the transmission gear (28) and the second transmission chain (30), so that the threaded column (25) controls the ball screw block (26) to move leftward, and the leftward movement of the ball screw block (26) drives the second electromagnetic block (27) to move leftward, so that the second electromagnetic block (27) controls the material storage block (3) to move leftward, so that the material storage block (3) moves to the bottom of the desorption box (12) on the left, and the second electromagnetic block (27) is controlled to be closed.

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