Condensing device for n-propyl acetate production

Abstract

The utility model relates to the technical field of condensing devices, in particular to a condensing device for producing n-propyl acetate, which comprises a steam pipe, a coiled pipe mounted at the air outlet end of the steam pipe, an exhaust pipe mounted at the air outlet end of the coiled pipe, a water inlet pipe fixedly mounted on the exhaust pipe, and a spiral heat exchange pipe fixedly mounted at the water outlet end of the water inlet pipe. The spiral heat exchange pipe is located in the coiled pipe, a water outlet pipe is fixedly installed at the water outlet end of the spiral heat exchange pipe, a drainage assembly is arranged at the bottom of the coiled pipe and comprises a plurality of drainage pipes fixedly installed on a pipe body at the bottom of the coiled pipe, and a drainage cylinder is fixedly installed at the bottom of each drainage pipe. A conical barrel is fixedly installed on the cavity wall of the water outlet cavity, a plugging ball and a floating ball are slidably connected into the water outlet cavity and the floating cavity respectively, and the plugging ball and the floating ball are connected through a guide rod. The n-propyl acetate steam condensation device is beneficial to steam condensation operation in the n-propyl acetate production process and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of condensing devices, in particular to a condensing device for producing n-propyl acetate. Background Art

[0002] n-Propyl acetate, as an important organic solvent and chemical raw material, is widely used in many fields such as coatings, inks, fragrances, and medicines. Its production process usually involves an esterification reaction, that is, acetic acid and n-propanol react in the presence of a catalyst to produce n-propyl acetate. In addition to the target product n-propyl acetate, this reaction process also produces a large amount of high-temperature and high-pressure steam, unreacted raw materials, by-products, and possible solid impurities.

[0003] Since the high-temperature and high-pressure steam generated during the production of n-propyl acetate is directly discharged to the outside, it not only pollutes the air, but also causes a lot of heat energy to be wasted, and may also cause damage to production equipment and even cause safety accidents. In order to achieve the effect of treating the hot steam, a corresponding condensing device is usually installed at the gas outlet end of the n-propyl acetate production equipment. There are many types of condensing devices on the market. When most condensing devices are in use, an exhaust pipe is arranged, and a condensing pipe is provided in the exhaust pipe. By transporting cold water into the condensing pipe for heat exchange, the steam is condensed and the heat in the steam is recovered and utilized.

[0004] There are many types of condensing devices on the market. To achieve better condensation and increase heat exchange time, the exhaust pipes on most n-propyl acetate production equipment are relatively long, and the corresponding condensing pipes are also long. In this case, although good heat exchange can be achieved, the long pipes take up more space, especially long straight pipes, which take up more space in the workshop and cause inconvenience to users. In view of this, we have proposed a condensing device for n-propyl acetate production. Utility Model Content

[0005] The purpose of the utility model is to provide a condensing device for producing n-propyl acetate to solve the defects mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A condensing device for producing n-propyl acetate, comprising a steam pipe, a serpentine pipe fixedly mounted on the gas outlet end of the steam pipe, an exhaust pipe fixedly mounted on the gas outlet end of the serpentine pipe, a water inlet pipe fixedly mounted on the exhaust pipe, a spiral heat exchange pipe fixedly mounted on the water outlet end of the water inlet pipe, the spiral heat exchange pipe being located inside the serpentine pipe, a water outlet pipe fixedly mounted on the water outlet end of the spiral heat exchange pipe, the water outlet pipe passing through the steam pipe, a drainage assembly provided at the bottom of the serpentine pipe, the drainage assembly comprising a plurality of fixedly mounted A drainage pipe on the pipe body, an outer row cylinder is fixedly installed at the bottom of the drainage pipe, and a water inlet chamber and a water outlet chamber are respectively provided in the left and right side cylinders of the outer row cylinder, the water inlet chamber and the water outlet chamber are connected through a water inlet hole, the water inlet chamber is connected to the drainage pipe, a conical cylinder is fixedly installed on the cavity wall of the water outlet chamber, a floating chamber is provided on the top wall of the water outlet chamber, a sealing ball and a floating ball are respectively slidably connected in the water outlet chamber and the floating chamber, and the sealing ball and the floating ball are connected by a guide rod.

[0008] Preferably, the spiral heat exchange tube is spiral-shaped and is arranged along the direction of the serpentine tube.

[0009] Preferably, the float is located above the water inlet, and the conical cylinder is funnel-shaped.

[0010] Preferably, a water-passing tray is fixedly mounted on the top wall of the water outlet chamber, the guide rod passes through the water-passing tray and is slidably connected to the water-passing tray, and the float is located above the water-passing tray.

[0011] Preferably, a guide hole is provided at the center of the water passage tray, and the guide rod passes through the guide hole and is slidably connected to the guide hole.

[0012] Preferably, the water through tray is provided with a plurality of vertically arranged water through holes, and both ends of the water through holes are respectively communicated with the floating chamber and the water outlet chamber.

[0013] Preferably, an outflow pipe is fixedly installed at the bottom end of the water outlet chamber, and the outflow pipe is communicated with the water outlet chamber.

[0014] Preferably, the diameter of the blocking ball is larger than the inner diameter of the bottom end of the conical cylinder, and the size of the floating ball is adapted to the size of the floating chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model is used to transport steam through the steam pipe, serpentine pipe and exhaust pipe, and is used to transport cold water for condensation and heat exchange operations through the water inlet pipe, spiral heat exchange pipe and water outlet pipe. Due to the curved arrangement of the serpentine pipe, the occupied space can be reduced, achieving the effect of saving space and facilitating condensation and heat exchange, which is beneficial to the condensation and heat exchange operations of hot steam in the production process of n-propyl acetate.

[0017] 2. The utility model is provided with a drainage component to ensure that when in use, when water accumulates at the bottom of the serpentine tube, the float will float up and drive the blocking ball to move upward, and the accumulated water can be discharged along the outflow pipe. When the accumulated water is discharged, the float and the blocking ball move downward to seal the conical tube, thereby preventing steam from being discharged outward along the outflow pipe, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drainage component of the utility model;

[0020] Figure 3 This is a cross-sectional view of the outer row cylinder of the utility model;

[0021] Figure 4 This is a partial structural diagram of the drainage assembly of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the water tray of the utility model;

[0023] The meaning of each number in the figure is:

[0024] 1. Steam pipe; 10. Coil pipe; 11. Exhaust pipe;

[0025] 2. Water inlet pipe; 20. Spiral heat exchange tube; 21. Water outlet pipe;

[0026] 3. Drain assembly; 30. Drain pipe; 31. External drain cylinder; 311. Water inlet chamber; 32. Water outlet chamber; 33. Water inlet hole; 34. Conical cylinder; 35. Water tray; 351. Guide hole; 352. Water hole; 36. Float chamber; 37. Float; 371. Guide rod; 38. Sealing ball; 39. Outflow pipe. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 The utility model provides a technical solution: a condensing device for producing n-propyl acetate, comprising a steam pipe 1, a serpentine pipe 10 is fixedly installed at the gas outlet end of the steam pipe 1, an exhaust pipe 11 is fixedly installed at the gas outlet end of the serpentine pipe 10, a water inlet pipe 2 is fixedly installed on the exhaust pipe 11, a spiral heat exchange pipe 20 is fixedly installed at the water outlet end of the water inlet pipe 2, the spiral heat exchange pipe 20 is located in the serpentine pipe 10, a water outlet pipe 21 is fixedly installed at the water outlet end of the spiral heat exchange pipe 20, the water outlet pipe 21 passes through the steam pipe 1, the spiral heat exchange pipe 20 is spiral, and the spiral heat exchange pipe 20 is arranged along the pipeline direction of the serpentine pipe 10 to realize the condensation and heat exchange operation of water passing into the spiral heat exchange pipe 20. In addition, the curved arrangement of the serpentine pipe 10 can reduce the occupied space, which is beneficial to the steam condensation operation in the production process of n-propyl acetate;

[0029] Specifically, a drainage assembly 3 is provided at the bottom of the serpentine tube 10. The drainage assembly 3 includes a plurality of drainage pipes 30 fixedly mounted on the bottom tube body of the serpentine tube 10. An outer row tube 31 is fixedly mounted at the bottom of the drainage pipe 30. An inlet chamber 311 and an outlet chamber 32 are respectively provided in the left and right sides of the outer row tube 31. The inlet chamber 311 and the outlet chamber 32 are connected through the water inlet hole 33. The inlet chamber 311 is connected to the drainage pipe 30. A conical cylinder 34 is fixedly mounted on the wall of the outlet chamber 32. A floating chamber 36 is provided on the top wall of the outlet chamber 32. The outlet chamber 32 and the floating chamber 33 are connected. 6 are respectively slidably connected with a blocking ball 38 and a floating ball 37, and the blocking ball 38 and the floating ball 37 are connected by a guide rod 371 to ensure that when in use, as water accumulates in the serpentine tube 10, the accumulated water enters the water outlet chamber 32, which can drive the floating ball 37 to float up. After the floating ball 37 floats up, it can drive the blocking ball 38 to move upward. At this time, the blocking ball 38 no longer blocks the conical tube 34, and the accumulated water can be discharged normally. When the accumulated water is discharged, the floating ball 37 drops, and the blocking ball 38 continues to block the conical tube 34, thereby preventing the steam from escaping during the production of n-propyl acetate.

[0030] In this embodiment, the float 37 is located above the water inlet 33, the conical cylinder 34 is funnel-shaped, the ball diameter of the sealing ball 38 is larger than the inner diameter of the bottom end of the conical cylinder 34, and the size of the float 37 is adapted to the size of the upper float chamber 36, which is used for the normal up and down movement of the float 37 and the normal sealing operation of the sealing ball 38.

[0031] Specifically, a water passage tray 35 is fixedly installed on the top wall of the water outlet chamber 32, the guide rod 371 passes through the water passage tray 35 and is slidably connected to the water passage tray 35, and the float 37 is located above the water passage tray 35; a guide hole 351 is provided at the center position of the water passage tray 35, the guide rod 371 passes through the guide hole 351 and is slidably connected to the guide hole 351, thereby guiding the movement of the float 37.

[0032] Furthermore, the water tray 35 is provided with a plurality of vertical water holes 352 , and both ends of the water holes 352 are respectively connected to the floating chamber 36 and the water outlet chamber 32 , so that water can flow normally along the water holes 352 .

[0033] In addition, an outflow pipe 39 is fixedly installed at the bottom end of the water outlet chamber 32 , and the outflow pipe 39 is connected to the water outlet chamber 32 so that the accumulated water can be discharged normally outward along the outflow pipe 39 .

[0034] When the condensing device for producing n-propyl acetate of the present invention is used, the steam pipe 1 is connected to the steam exhaust pipe on the n-propyl acetate production equipment, the exhaust pipe 11 is connected to the external treatment equipment, the water inlet pipe 2 is connected to the cold water inlet pipe, and the water outlet pipe 21 is connected to the external water pipe. After the steam enters through the steam pipe 1, the steam can enter the serpentine pipe 10. After the water enters the water inlet pipe 2, the water enters the spiral heat exchange tube 20 and can perform heat exchange operation with the steam in the serpentine pipe 10. The hot water after heat exchange is discharged through the water outlet pipe 21, and the gas after heat exchange is discharged through the exhaust pipe 11.

[0035] As condensed water is generated in the serpentine tube 10, the condensed water flows along the drain pipe 30 at the bottom of the serpentine tube 10 into the water inlet chamber 311, and then flows along the water inlet hole 33 into the water outlet chamber 32. As the amount of water in the water outlet chamber 32 increases, the water in the water outlet chamber 32 enters the floating chamber 36 through the water hole 352, driving the float 37 to float up. The buoyancy of the float 37 is greater than that of the float 37, the blocking ball 38 and the guide rod 371. The gravity of the ball 37 drives the sealing ball 38 to move upward. At this time, the sealing ball 38 no longer blocks the conical tube 34, and the accumulated water can be discharged from the outflow pipe 39 along the bottom of the water outlet chamber 32. After the accumulated water is discharged, the buoyancy of the float 37 is less than the gravity of the float 37, the sealing ball 38 and the guide rod 371. At this time, the sealing ball 38 will move downward and block the conical tube 34, completing the sealing operation to prevent steam from escaping.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A condensing device for producing n-propyl acetate, characterized in that: The invention comprises a steam pipe (1), a serpentine pipe (10) is fixedly installed at the gas outlet end of the steam pipe (1), an exhaust pipe (11) is fixedly installed at the gas outlet end of the serpentine pipe (10), a water inlet pipe (2) is fixedly installed on the exhaust pipe (11), a spiral heat exchange pipe (20) is fixedly installed at the water outlet end of the water inlet pipe (2), the spiral heat exchange pipe (20) is located in the serpentine pipe (10), a water outlet pipe (21) is fixedly installed at the water outlet end of the spiral heat exchange pipe (20), the water outlet pipe (21) passes through the steam pipe (1), a drainage assembly (3) is provided at the bottom of the serpentine pipe (10), the drainage assembly (3) comprises a plurality of drainage pipes (30) fixedly installed on the bottom pipe body of the serpentine pipe (10), the drainage pipe (3 0) is fixedly installed at the bottom of the outer row tube (31), and a water inlet chamber (311) and a water outlet chamber (32) are respectively provided in the left and right side cylinders of the outer row tube (31), the water inlet chamber (311) and the water outlet chamber (32) are connected through a water inlet hole (33), the water inlet chamber (311) is connected to the drain pipe (30), a conical tube (34) is fixedly installed on the cavity wall of the water outlet chamber (32), a floating chamber (36) is provided on the top wall of the water outlet chamber (32), a blocking ball (38) and a floating ball (37) are respectively slidably connected in the water outlet chamber (32) and the floating chamber (36), and the blocking ball (38) and the floating ball (37) are connected through a guide rod (371).

2. The condensing device for producing n-propyl acetate according to claim 1, characterized in that: The spiral heat exchange tube (20) is spiral-shaped and is arranged along the pipeline direction of the serpentine tube (10).

3. The condensing device for producing n-propyl acetate according to claim 1, characterized in that: The float (37) is located above the water inlet (33), and the conical cylinder (34) is funnel-shaped.

4. The condensing device for producing n-propyl acetate according to claim 1, characterized in that: A water-passing tray (35) is fixedly mounted on the top wall of the water outlet chamber (32); the guide rod (371) passes through the water-passing tray (35) and is slidably connected to the water-passing tray (35); and the float (37) is located above the water-passing tray (35).

5. The condensing device for producing n-propyl acetate according to claim 4, characterized in that: A guide hole (351) is provided at the center of the water-passing tray (35), and the guide rod (371) passes through the guide hole (351) and is slidably connected to the guide hole (351).

6. The condensing device for producing n-propyl acetate according to claim 5, characterized in that: The water-through tray (35) is provided with a plurality of vertically arranged water-through holes (352), and the two ends of the water-through holes (352) are respectively connected to the floating chamber (36) and the water outlet chamber (32).

7. The condensing device for producing n-propyl acetate according to claim 6, characterized in that: An outflow pipe (39) is fixedly installed at the bottom end of the water outlet chamber (32), and the outflow pipe (39) is communicated with the water outlet chamber (32).

8. The condensing device for producing n-propyl acetate according to claim 1, characterized in that: The diameter of the blocking ball (38) is larger than the inner diameter of the bottom end of the conical cylinder (34), and the size of the floating ball (37) is adapted to the size of the floating chamber (36).

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