A condensation device and condensation method for normal butane production

Abstract

The present invention provides a condensing device and a condensing method for producing n-butane, and belongs to the technical field of n-butane production. The condensing device for producing n-butane comprises a condensing tank, both ends of which are provided with sealing plates, a plurality of evenly arranged condensing tubes are fixedly provided between the two sealing plates, the two ends of the condensing tubes respectively pass through the two sealing plates, a baffle is provided on the side of one sealing plate away from the other sealing plate, a scraping assembly is provided in the end of the condensing tube close to the baffle, and the n-butane droplets remaining on the inner wall of the condensing tube can be scraped and absorbed, and at the same time, after the scraping belt rotates one circle and the contact point between the scraping belt and the inner wall of the condensing tube is at the highest position, the scraping belt is driven to pass between the two extrusion shafts, and the n-butane liquid adsorbed by the scraping belt is squeezed out by the extrusion shafts, so that the n-butane droplets are prevented from adhering to the inner wall of the condensing tube for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of n-butane production, and particularly relates to a condensing device and a condensing method for n-butane production. Background Art

[0002] In the production process of n-butane, the condensing device can quickly cool the high-temperature and high-pressure n-butane gas and condense it into liquid for subsequent storage, transportation and processing. After the high-temperature and high-pressure n-butane gas enters the condenser through the feed pipe, it exchanges heat with the cooling medium in the condenser. Under the action of the cooling medium, the temperature of the n-butane gas drops rapidly and condenses into liquid. Subsequently, the condensed n-butane liquid is discharged from the condenser through the discharge pipe. n-Butane is corrosive to a certain extent, so most condensing devices are equipped with technical means such as automatic cleaning systems or anti-corrosion coatings.

[0003] A Chinese patent with authorization announcement number CN117839251B discloses a condensing device for producing n-butane with high corrosion resistance, including a condensing tank, a material pipe, a cold liquid inlet pipe and a cold liquid outlet pipe. The heat exchange mechanism is arranged below the feeding mechanism, the heat exchange mechanism includes a condensing plate, and a cavity is arranged in the condensing plate. The feeding mechanism includes a material distribution plate, which is hollow. The cleaning mechanism includes a main shaft, which is vertically rotatably installed in the condensing tank, a supporting chassis is coaxially fixedly connected to the lower end of the main shaft, and a cleaning head is installed on the supporting chassis, and the supporting chassis can drive the cleaning head to move along the inner wall of the condensing tank.

[0004] Existing condensing devices usually use a scraper plate to remove the n-butane droplets adsorbed on the inner wall of the device after condensation inside the device. However, when the scraper plate is scraping the droplets, the n-butane droplets will also be adsorbed on the scraper plate, resulting in a small amount of liquid adsorbed on the inner wall of the condensing tank that is difficult to remove, and it is still easy to cause corrosion to the condensing device. Summary of the invention

[0005] The object of the present invention is to provide a condensing device and a condensing method for n-butane production, aiming to solve the problem in the prior art that when the scraping plate is scraping the liquid droplets, the n-butane droplets will also be adsorbed on the scraping plate, resulting in a small amount of liquid being adsorbed on the inner wall of the condensing tank and difficult to remove, and still easily causing corrosion to the condensing device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a condensing device for n-butane production, comprising a condensing tank, sealing plates are installed at both ends of the interior of the condensing tank, a plurality of evenly arranged condensing tubes are fixedly installed between the two sealing plates, the two ends of the condensing tubes respectively pass through the two sealing plates, a baffle is provided on the side of one of the sealing plates away from the other sealing plate, a scraping assembly is provided in the end of the condensing tube close to the baffle, and a driving assembly is provided on the baffle for driving the scraping assembly to work.

[0007] The scraping assembly includes a rotating column that rotates and passes through the baffle, a support shaft and an extrusion shaft installed on the end surface of the rotating column, a discharge pipe, a scraping belt and a driving assembly. There are three support shafts that are arranged along the circumference of the rotating column. A one-way bearing is provided between the support shaft and the rotating column. One end of the drain pipe is fixedly installed on the end surface of the rotating column and is located between two adjacent support shafts. An opening is provided on one side of the outer wall close to the other support shaft. There are two extrusion shafts that are symmetrical up and down and are located above the opening of the drain pipe. The scraping belt is wrapped around the three support shafts and passes between the two extrusion shafts.

[0008] The effect is that by setting a scraping belt, the n-butane droplets remaining on the inner wall of the condenser can be scraped and absorbed, avoiding the n-butane droplets remaining on the inner wall of the condenser from adhering to the inner wall of the condenser for a long time and affecting the heat exchange efficiency of the condenser. At the same time, it also prevents the n-butane droplets from corroding the inner wall of the condenser.

[0009] The driving assembly includes a fixed plate arranged on the side of the baffle away from the sealing plate, and a plurality of rotating columns are fixedly installed with driven gears on the outer walls of one end close to the fixed plate. A transmission gear is provided between two adjacent driven gears, and the transmission gear is meshed and connected with the two driven gears. A driving member is installed on the side of the fixed plate away from the baffle, and the conveying shaft of the driving member rotates through the fixed plate and is fixedly connected to one of the transmission gears to drive the transmission gear to rotate.

[0010] The effect is that it can drive the scraping belt to slide along the inner wall of the condenser, so that the scraping belt can repeatedly scrape the inner wall of the condenser comprehensively, thereby ensuring the scraping effect of the scraping belt and further preventing the residual n-butane droplets on the inner wall of the condenser from adhering to the inner wall of the condenser for a long time.

[0011] The driving assembly also includes a transmission shaft rotatably mounted on the rotating column and two driving shafts located on both sides of the transmission shaft. The transmission shaft is located at the center of the three supporting shafts and a torsion spring is provided between the transmission shaft and the rotating column. Two vertically arranged sliding grooves are provided on the end surface of the rotating column and are symmetrically distributed on both sides of the transmission shaft. One ends of the two driving shafts are respectively slidably sleeved in the two sliding grooves, and the scraper belts are bypassed by the outer walls of the two driving shafts. Telescopic connecting parts are connected to the outer walls of the two driving shafts on both sides of the outer wall of the transmission shaft, and a follower for rotating the transmission shaft is provided between the fixed plate and the baffle.

[0012] The follower includes a circular groove which is opened on one side of the fixed plate close to the baffle and is coaxial with the rotating column, and a follower gear which is located in the circular groove and contacts the inner wall of the circular groove. The inner walls on both sides and the bottom of the circular groove are provided with teeth. One end of the transmission shaft rotates through the rotating column and is fixedly connected with the center of the follower gear. As the rotating column rotates, the transmission shaft drives the follower gear to move circumferentially along the circular groove. When the follower gear meshes with the teeth, the transmission shaft starts to rotate.

[0013] The effect is that after the scraping belt rotates one circle and the contact point between the scraping belt and the inner wall of the condenser is at the highest position, the scraping belt is driven to pass through between the two extrusion shafts, and the n-butane liquid adsorbed by the scraping belt is squeezed out through the extrusion shafts, thereby ensuring the dryness of the scraping belt and the adsorption effect of the scraping belt on the n-butane droplets condensed on the inner wall of the condenser.

[0014] A plurality of arc-shaped shielding plates are fixedly connected between the sealing plate and the baffle plate, the axes of the plurality of arc-shaped shielding plates respectively coincide with the axes of the plurality of condensing tubes, and the arc-shaped shielding plates are located above the condensing tubes.

[0015] The effect is that it can prevent the n-butane liquid flowing out of the condenser from dripping onto the scraping assembly below, thereby affecting the scraping assembly and reducing the effect of the scraping assembly.

[0016] The central angle between two adjacent support shafts is 90-120 degrees, and the central angle between a support shaft not adjacent to the drainage pipe and the drainage pipe is 180 degrees.

[0017] The condensation tank includes a tank body, both ends of the tank body are provided with end covers, a sealing plate is fixedly installed between the tank body and the end covers, both sides of the bottom of the tank body are fixedly installed with support members for supporting the tank body, the top of one side of the outer wall of the tank body and the bottom of the other side of the outer wall are fixedly installed with first material pipes, the two first material pipes are respectively used for coolant to enter and discharge the tank body, the bottom of one end cover close to the baffle and the top of the other end cover are fixedly installed with second material pipes, the two second material pipes are respectively used for n-butane gas to enter the tank body and the condensed n-butane liquid to discharge the tank body.

[0018] The present invention also includes a condensation method for n-butane production, and the processing method is as follows: first, a condensing agent is introduced into the interior of a condensation tank to fill the condensation tank, and then n-butane gas is introduced into the interior of the condensation tank to allow it to enter a condensation tube for condensation, and at the same time, a scraping component is started to scrape and absorb n-butane droplets condensed on the inner wall of the condensation tube, and finally the condensed n-butane liquid is discharged from the condensation tank.

[0019] The effect is that the condensing agent enters from the bottom of the tank body, which ensures that the condensing agent can fill the interior of the tank body and ensures that all condensing tubes in the condensation tank can perform sufficient heat exchange.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a scraping belt, the n-butane droplets remaining on the inner wall of the condenser can be scraped and absorbed. At the same time, after the scraping belt rotates one circle and the contact point between the scraping belt and the inner wall of the condenser is at the highest position, the scraping belt is driven to pass between the two extrusion shafts, and the n-butane liquid adsorbed by the scraping belt is squeezed out by the extrusion shafts, thereby avoiding the n-butane droplets from adhering to the inner wall of the condenser for a long time and affecting the heat exchange efficiency of the condenser, and also preventing the n-butane droplets from corroding the inner wall of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the condensation tank in the present invention;

[0024] Figure 2 It is the internal schematic diagram of the condensation tank in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the condensation component in the present invention;

[0026] Figure 4 It is a side view schematic diagram of the condensation component in the present invention;

[0027] Figure 5 It is a side view schematic diagram of the condenser and the scraping assembly in the present invention;

[0028] Figure 6 It is a schematic diagram of the transmission structure of the scraping component in the present invention;

[0029] Figure 7 It is a schematic diagram of the partial structure of the scraping component in the present invention.

[0030] In the figure: 11, tank body; 12, end cover; 13, support member; 14, first material pipe; 15, second material pipe; 21, sealing plate; 22, condenser; 23, baffle; 24, arc shield; 25, fixed plate; 251, circular groove; 26, driving member; 27, scraper assembly; 271, rotating column; 272, supporting shaft; 273, drain pipe; 274, extrusion shaft; 275, slide groove; 276, driving shaft; 277, scraper belt; 278, transmission shaft; 2781, follower gear; 279, telescopic connecting member; 281, driven gear; 282, transmission gear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 7 The present invention provides the following technical solutions: a condensing device and a condensing method for producing n-butane, comprising a condensing tank and a condensing assembly, wherein the condensing assembly is installed inside the condensing tank and is used to condense the n-butane gas entering the condensing tank.

[0033] refer to Figure 2 and Figure 3 As shown, the condensation assembly includes two sealing plates 21, a condenser tube 22, a baffle 23 and a scraper assembly 27 symmetrically fixedly installed at both ends of the condensation tank. There are multiple condenser tubes 22 and they are evenly distributed between the two sealing plates 21. Both ends of the condenser tube 22 pass through the two sealing plates 21 respectively. A baffle 23 is provided on the side of one sealing plate 21 away from the other sealing plate 21. There are multiple scraper assemblies 27 and they are respectively installed inside one end of the multiple condenser tubes 22 close to the baffle 23. One end of the scraper assembly 27 extends out of the condenser tube 22 and is installed on the baffle 23. A driving assembly is provided on the baffle 23 to drive the scraper assembly 27 to work.

[0034] refer to Figure 4-Figure 7As shown, the scraping assembly 27 includes a rotating column 271, a support shaft 272, a drain pipe 273, an extrusion shaft 274 and a scraping belt 277. The rotating column 271 is installed on the side of the baffle 23 close to the sealing plate 21. One end of the rotating column 271 rotates and penetrates the baffle 23. There are three support shafts 272 and they are all rotatably installed on the end of the rotating column 271 close to the sealing plate 21 through a one-way bearing, so that the support shaft 272 can only rotate clockwise. The three support shafts 272 are arranged along the circumference of the rotating column 271 and the central angle between two adjacent support shafts 272 is 90-120 degrees. The drain pipe 273 is arranged at one end of the rotating column 271 close to the sealing plate 21. The drain pipe 273 is located at the bottom of the end surface of the rotating column 271. An opening is provided on the outer wall of one side of the support shaft 272 at the top end face of the rotating column 271, and a drainage port is provided at the bottom of one end of the drain pipe 273 near the baffle 23. There are two extrusion shafts 274 and both are arranged above the opening of the drain pipe 273. The two extrusion shafts 274 are symmetrically arranged up and down. The scraper belt 277 passes through between the two extrusion shafts 274 and is wound around the three support shafts 272. The scraper belt 277 is made of an annular belt and absorbent cotton, wherein the absorbent cotton is laid on the outer surface of the annular belt. The driving assembly is installed at one end of the rotating column 271 near the sealing plate 21, and is used to drive the scraper belt 277 to move on the support shaft 272, so that the two support shafts 272 squeeze the n-butane liquid absorbed by the scraper belt 277.

[0035] The driving assembly includes a fixed plate 25 arranged on the side of the baffle 23 away from the sealing plate 21, and a plurality of rotating columns 271 are fixedly installed with driven gears 281 on the outer walls of one end close to the fixed plate 25. A transmission gear 282 meshingly connected to the two driven gears 281 is provided between two adjacent driven gears 281. A driving member 26 is installed on the side of the fixed plate 25 away from the baffle 23. The driving member 26 is a low-speed motor, and its conveying shaft rotates through the fixed plate 25 and is fixedly connected to one of the transmission gears 282.

[0036] The driving assembly also includes a transmission shaft 278 rotatably mounted on one end of the rotating column 271 close to the sealing plate 21 and two driving shafts 276 arranged on both sides of the transmission shaft 278. The transmission shaft 278 is located at the center of the three supporting shafts 272. A torsion spring is arranged between the transmission shaft 278 and the rotating column 271. Two vertically arranged slide grooves 275 are opened at one end of the rotating column 271 close to the sealing plate 21. The two slide grooves 275 are symmetrical and respectively located on both sides of the transmission shaft 278. One end of the two driving shafts 276 is respectively slidably sleeved in the two slide grooves 275 to scrape the belt. 277 is bypassed by the outer walls of the two driving shafts 276, and telescopic connecting pieces 279 are connected between the outer walls of the two driving shafts 276 on both sides of the outer wall of the transmission shaft 278. After one end of the transmission shaft 278 rotates through the rotating column 271, a follower gear 2781 is fixedly installed. A plurality of circular grooves 251 are opened on one side of the fixed plate 25 close to the baffle 23. The plurality of circular grooves 251 are coaxially arranged with the plurality of rotating columns 271 respectively. The inner walls of the two sides and the bottom of the circular groove 251 are provided with teeth. The follower gear 2781 is located in the circular groove 251 and conflicts with the inner wall of the circular groove 251.

[0037] refer to Figure 2 As shown, a plurality of arc-shaped shielding plates 24 are fixedly connected between the sealing plate 21 and the baffle plate 23 , the axes of the plurality of arc-shaped shielding plates 24 coincide with the axes of the plurality of condensing tubes 22 , respectively, and the arc-shaped shielding plates 24 are located above the condensing tubes 22 .

[0038] refer to Figure 1 As shown, the condensation tank includes a tank body 11, both ends of the tank body 11 are provided with end covers 12, a sealing plate 21 is fixedly installed between the tank body 11 and the end covers 12, and support members 13 are fixedly installed on both sides of the bottom of the tank body 11 for supporting the tank body 11. A first material pipe 14 is fixedly installed on the top of one side of the outer wall of the tank body 11 and the bottom of the other side of the outer wall, wherein the first material pipe 14 located at the bottom is used for coolant to enter the tank body 11, and the other first material pipe 14 is used for coolant to discharge the tank body 11, and a second material pipe 15 is fixedly installed on the bottom of one end cover 12 close to the baffle 23 and the top of the other end cover 12, wherein the second material pipe 15 located at the top of the end cover 12 is used to allow n-butane gas to enter the tank body 11, and the other second material pipe 15 is used to discharge condensed n-butane liquid from the tank body 11.

[0039] The present invention also includes a condensation method for producing n-butane, which method is as follows:

[0040] First, the condensing agent is introduced into the tank body 11 through the first material pipe 14 at the bottom of the tank body 11 to fill the tank body 11, and then the n-butane gas is introduced into the tank body 11 through the second material pipe 15 at the top of the end cover 12 to enter the condenser tube 22 for condensation. At the same time, the scraping component 27 is started to scrape and absorb the n-butane droplets condensed on the inner wall of the condenser tube 22. Finally, the condensed n-butane liquid is discharged from the second material pipe 15 at the bottom of the end cover 12.

[0041] The implementation principle of the embodiment of the present invention is as follows: when the n-butane gas is condensed, the condensing agent is introduced into the tank body 11 through the first material pipe 14 at the bottom of the tank body 11. When the condensing agent fills the tank body 11, it starts to be discharged from the first material pipe 14 at the top of the tank body 11. At this time, the n-butane gas is introduced into the tank body 11 through the second material pipe 15 at the top of the end cover 12, so that it enters the tube from one end of the condenser pipe 22. As the n-butane gas moves along the condenser pipe 22, the n-butane gas exchanges heat with the condensing agent inside the tank body 11 through the condenser pipe 22. The n-butane gas is gradually condensed into liquid and flows out along the other end of the condenser pipe 22. At this time, n-butane droplets will remain on the inner wall of the condenser pipe 22. The driving member 26 is started to drive the rotating column 271 to rotate. At this time, the rotating column 271 drives the scraper belt 277 to rotate through the support shaft 272. At this time, the part where the scraper belt 277 contacts the inner wall of the condenser tube 22 scrapes and absorbs the n-butane droplets remaining on the inner wall of the condenser tube 22. As the rotating column 271 rotates, the follower gear 2781 moves clockwise along the inner wall of the circular groove 251, and drives the transmission shaft 278 to rotate counterclockwise and compress the torsion spring under the action of the teeth on the inner wall of the circular groove 251. At this time, the transmission shaft 278 drives the drive shaft 276 on the right side of the transmission shaft 278 to rise along the slide groove 275 through the telescopic connecting member 279, and the drive shaft 276 on the other side rises along the other slide groove 275 Downward, because the support shaft 272 can only rotate clockwise under the action of the one-way bearing, the scraping belt 277 moves along the outer wall of the support shaft 272 with the movement of the two driving shafts 276, and the scraping belts 277 at the two extrusion shafts 274 do not move. With the movement of the scraping belt 277, the scraping belt 277 that initially scrapes and absorbs the n-butane droplets is separated from the inner wall of the condenser 22, and the remaining scraping belts 277 scrape and absorb the n-butane droplets. With the rotation of the rotating column 271, the contact position of the scraping belt 277 with the inner wall of the condenser 22 is continuously changed, thereby ensuring that the scraping belt 277 in contact with the inner wall of the condenser 22 is always dry, thereby improving the scraping belt 277 scraping and absorbing n-butane The effect of droplets, when the rotating column 271 rotates nearly one circle, the follower gear 2781 rotates to the position where there is no tooth on the inner wall of the circular groove 251, and the follower gear 2781 disengages from the tooth, and the transmission shaft 278 rotates in the opposite direction under the action of the torsion spring. At this time, the drive shaft 276 on the right side of the transmission shaft 278 descends along the slide groove 275, and the drive shaft 276 on the other side rises along the other slide groove 275. Since the support shaft 272 can only rotate clockwise under the action of the one-way bearing, the scraper belt 277 passes between the two extrusion shafts 274 with the movement of the two drive shafts 276. At this time, the n-butane droplets adsorbed by the scraper belt 277 are squeezed and drip into the drain pipe 273 for discharge.

[0042] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A condensing device for producing n-butane, comprising a condensing tank, wherein sealing plates (21) are installed at both ends of the interior of the condensing tank, a plurality of uniformly arranged condensing tubes (22) are fixedly installed between the two sealing plates (21), and the two ends of the condensing tubes (22) respectively penetrate the two sealing plates (21), characterized in that: A baffle (23) is provided on one side of one sealing plate (21) away from the other sealing plate (21), a scraping assembly (27) is provided in one end of the condenser tube (22) close to the baffle (23), and a driving assembly is provided on the baffle (23) for driving the scraping assembly (27) to work; The scraping assembly (27) comprises a rotating column (271) rotatably penetrating the baffle (23), a support shaft (272) and an extrusion shaft (274) mounted on the end surface of the rotating column (271), a liquid discharge pipe (273) and a scraping belt (277), wherein three support shafts (272) are arranged along the circumference of the rotating column (271), a one-way bearing is arranged between the support shaft (272) and the rotating column (271), one end of the liquid discharge pipe (273) is fixedly mounted on the end surface of the rotating column (271) and is located between two adjacent support shafts (272), and an opening is provided on one side of the outer wall of the liquid discharge pipe (273) close to the other support shaft (272), two extrusion shafts (274) are symmetrical in upper and lower directions and are located above the opening of the liquid discharge pipe (273), and the scraping belt (277) is wound around the three support shafts (272) and passes between two extrusion shafts (274); The driving assembly comprises a fixed plate (25) arranged on a side of the baffle (23) away from the sealing plate (21), a transmission shaft (278) rotatably mounted on a rotating column (271), and two driving shafts (276) located on both sides of the transmission shaft (278); a plurality of rotating columns (271) are fixedly mounted with a driven gear (281) on one end of the outer wall close to the fixed plate (25); a transmission gear (282) is arranged between two adjacent driven gears (281); the transmission gear (282) is meshedly connected with the two driven gears (281); a driving member (26) is mounted on a side of the fixed plate (25) away from the baffle (23); a conveying shaft of the driving member (26) rotates through the fixed plate (25) and is fixedly engaged with one of the transmission gears (282) The transmission shaft (278) is fixedly connected and used to drive the transmission gear (282) to rotate. The transmission shaft (278) is located at the center of the three support shafts (272) and a torsion spring is provided between the transmission shaft (278) and the rotating column (271). Two vertically arranged slide grooves (275) are provided on the end surface of the rotating column (271) and are symmetrically distributed on both sides of the transmission shaft (278). One end of the two driving shafts (276) is respectively slidably sleeved in the two slide grooves (275). The scraping belt (277) is bypassed by the outer walls of the two driving shafts (276). The outer walls of the transmission shaft (278) are respectively connected to the outer walls of the two driving shafts (276) with telescopic connecting members (279). A follower for rotating the transmission shaft (278) is provided between the fixed plate (25) and the baffle plate (23); The follower comprises a circular groove (251) provided on a side of the fixed plate (25) close to the baffle plate (23) and coaxial with the rotating column (271), and a follower gear (2781) located in the circular groove (251) and in contact with the inner wall of the circular groove (251). The inner walls of both sides and the bottom of the circular groove (251) are provided with teeth. One end of the transmission shaft (278) rotates to penetrate the rotating column (271) and is fixedly connected to the center of the follower gear (2781). As the rotating column (271) rotates, the transmission shaft (278) drives the follower gear (2781) to move along the circumferential direction of the circular groove (251). When the follower gear (2781) meshes with the teeth, the transmission shaft (278) starts to rotate.

2. A condensing device for n-butane production according to claim 1, characterized in that: A plurality of arc-shaped shielding plates (24) are fixedly connected between the sealing plate (21) and the baffle plate (23); the axes of the plurality of arc-shaped shielding plates (24) respectively coincide with the axes of the plurality of condensing tubes (22); and the arc-shaped shielding plates (24) are located above the condensing tubes (22).

3. A condensing device for n-butane production according to claim 1, characterized in that: The central angle between two adjacent support shafts (272) is 90-120 degrees, and the central angle between a support shaft (272) not adjacent to the drainage pipe (273) and the drainage pipe (273) is 180 degrees.

4. A condensing device for n-butane production according to claim 1, characterized in that: The condensation tank comprises a tank body (11), both ends of the tank body (11) are provided with end covers (12), a sealing plate (21) is fixedly installed between the tank body (11) and the end covers (12), both sides of the bottom of the tank body (11) are fixedly installed with support members (13) for supporting the tank body (11), a first material pipe (14) is fixedly installed at the top of one side of the outer wall of the tank body (11) and the bottom of the other side of the outer wall, the two first material pipes (14) are respectively used for coolant to enter and exit the tank body (11), the bottom of one end cover (12) close to the baffle (23) and the top of the other end cover (12) are fixedly installed with second material pipes (15), the two second material pipes (15) are respectively used for n-butane gas to enter the tank body (11) and for condensed n-butane liquid to exit the tank body (11).

5. A condensation method for producing n-butane, characterized in that: The condensation device for producing n-butane according to claim 1 is used, and the condensation method is as follows: First, a condensing agent is introduced into the condensing tank to fill the condensing tank, and then n-butane gas is introduced into the condensing tank to enter the condensing tube (22) for condensation. At the same time, a scraping component (27) is started to scrape and absorb the n-butane droplets condensed on the inner wall of the condensing tube (22), and finally the condensed n-butane liquid is discharged from the condensing tank.

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