Flash tank equipment

Abstract

The invention discloses flash tank equipment which comprises a flash tank, a feeding pipe, an exhaust pipe, a conical first heating flow guide body, a first oil way, an annular second heating flow guide body and a second oil way. And a tank wall convex part is arranged on the inner surface of the tank wall of the flash tank. A first oil cavity is formed in the first heating flow guide body, the first heating flow guide body is suspended below the spraying head at the lower end of the feeding pipe and is positioned above the convex part of the tank wall, and the first oil way is connected with the first heating flow guide body and is communicated with the first oil cavity. A second oil cavity is formed in the second heating flow guide body, the second heating flow guide body is arranged below the tip of the convex part of the tank wall, and the second oil way is connected with the second heating flow guide body and communicated with the second oil cavity, so that the heat transfer mode is improved, the heat transfer area and the heat transfer intensity are effectively increased, and the retention time of fluid materials is prolonged; the temperature of the lower half part of the flash tank is increased, so that the flash efficiency is improved, and the quality and the performance of polymer products are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical industry, in particular to a flash tank device. Background Art

[0002] Flash distillation is a technique that uses pressure fluctuations to separate the different components in a mixture. In the polymer industry, flash tanks are widely used to separate, dry, and purify polymers containing high concentrations of volatiles to ensure the quality and performance of the final product. However, with the continued expansion of polymer applications and advancements in production technology, the performance and efficiency requirements of flash tanks are also increasing.

[0003] Existing flash tanks have the following problems when processing polymers:

[0004] Flash tank efficiency is affected by uneven temperature distribution within the tank, particularly in the lower half of the tank. Due to inefficient heat exchange or poor heat conduction, this area can be subject to insufficient temperature, impacting flash efficiency. Insufficient temperature prevents the volatile components in the polymer from fully vaporizing, thus compromising devolatilization and the purity and quality of the polymer product. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of the prior art by providing a flash tank device, wherein a first heating guide body and a second heating guide body are disposed within the flash tank, and a tank wall protrusion is provided on the inner surface of the tank wall. The first heating guide body is used to initially heat the fluid material and guide the fluid material toward the tank wall surface. The tank wall protrusion causes the fluid material sliding down the tank wall surface to converge toward the center again and drip onto the wall surface of the second heating guide body. The second heating guide body then performs a secondary heating on the fluid material, ensuring that the middle and lower portions of the flash tank have a sufficient temperature. As the fluid material falls under its own gravity, it evaporates in a liquid film manner, enhancing the solvent evaporation process and improving the flash evaporation effect.

[0006] The technical solution of the present invention provides a flash tank device, comprising a flash tank having a lower end discharge port and an upper end cover, a feed pipe passing downward through the upper end cover and equipped with a spray nozzle at the lower end, an exhaust pipe connected to the upper end cover, a first heating guide body having a first oil cavity and a conical shape, a first oil circuit connected to the first heating guide body, a second heating guide body having a second oil cavity and an annular shape, and a second oil circuit connected to the second heating guide body;

[0007] The inner surface of the tank wall of the flash tank is provided with a tank wall protrusion, and in the direction from the outside to the inside, the upper surface of the tank wall protrusion extends obliquely downward, and the lower surface of the tank wall protrusion extends obliquely upward;

[0008] The first heating guide body is suspended between the spray head and the convex portion of the tank wall, and the first heating guide body is used to heat the fluid material and guide the fluid material to flow toward the convex portion of the tank wall;

[0009] The second heating guide body is arranged on the lower side of the tip portion of the tank wall protrusion. The second heating guide body is used to heat the fluid material and guide the fluid material to flow downward along the wall surface of the second heating guide body.

[0010] In one of the optional technical solutions, the outer diameter of the second heating guide body is smaller than the outer diameter of the tank wall protrusion and larger than the inner diameter of the tank wall protrusion;

[0011] The upper end of the second heating guide body is located between the upper and lower ends of the lower surface of the tank wall protrusion.

[0012] In one of the optional technical solutions, the second oil chamber is annular, and is provided with a second oil chamber inlet and a second oil chamber outlet that are oppositely arranged;

[0013] The second oil circuit includes a hard second oil inlet pipe and a hard second oil outlet pipe, the second oil inlet pipe passes through the tank wall and is connected to the inlet of the second oil chamber, and the second oil outlet pipe passes through the tank wall and is connected to the outlet of the second oil chamber;

[0014] The second heating guide body is supported in the flash tank through the second oil inlet pipe and the second oil outlet pipe.

[0015] In one of the optional technical solutions, the second oil chamber inlet and the second oil chamber outlet are funnel-shaped respectively, and a porous flow balancing plate is provided in the second oil chamber inlet.

[0016] In one of the optional technical solutions, a diverter plate extending toward the multi-porous flow balancing plate is provided in the second oil chamber. The diverter plate is arranged perpendicular to the multi-porous flow balancing plate and is located on the center line of the inlet of the second oil chamber.

[0017] In one of the optional technical solutions, the feed pipe, the first heating guide body, the second heating guide body and the tank wall protrusion are coaxially arranged.

[0018] In one of the optional technical solutions, the bottom surface of the first heating guide body has a conical groove.

[0019] In one of the optional technical solutions, the first oil chamber is provided with a first oil chamber inlet and a first oil chamber outlet which are arranged opposite to each other;

[0020] The first oil circuit includes a hard first oil inlet pipe and a first oil outlet pipe, the first oil inlet pipe passes through the upper end cover and is connected to the inlet of the first oil chamber, and the first oil outlet pipe passes through the upper end cover and is connected to the outlet of the first oil chamber;

[0021] The first heating guide body is suspended in the flash tank through the first oil inlet pipe and the first oil outlet pipe.

[0022] In one of the optional technical solutions, the first oil inlet pipe and the first oil outlet pipe are respectively slidably connected to the upper end cover;

[0023] A driving device for driving the first oil inlet pipe and the first oil outlet pipe to rise and fall is provided on the upper end cover, and the driving device is used to adjust the height of the first heating guide body in the flash tank.

[0024] In one of the optional technical solutions, the driving device includes two sets of driving mechanisms and a lifting plate;

[0025] The two sets of driving mechanisms are connected to opposite sides of the upper cover, and the lifting plate is connected between the output ends of the two sets of driving mechanisms;

[0026] The first oil inlet pipe and the first oil outlet pipe respectively pass through the lifting plate and are fixedly connected to the lifting plate.

[0027] The above technical solution has the following beneficial effects:

[0028] The flash tank device provided by the present invention includes a flash tank, a feed pipe, an exhaust pipe, a conical first heating guide body, a first oil circuit, an annular second heating guide body, and a second oil circuit. The inner surface of the tank wall of the flash tank is provided with a tank wall protrusion, the upper and lower surfaces of the tank wall protrusion are inclined surfaces, and the end of the tank wall protrusion is a tip. The first heating guide body has a first oil cavity therein, the first heating guide body is suspended below the spray head at the lower end of the feed pipe and above the tank wall protrusion, the first oil circuit is connected to the first heating guide body and communicates with the first oil cavity. The second heating guide body has a second oil cavity therein, the second heating guide body is arranged below the tip of the tank wall protrusion, and the second oil circuit is connected to the second heating guide body and communicates with the second oil cavity.

[0029] During flash evaporation, material is fed through a feed pipe and sprayed out through a spray nozzle. The sprayed fluid material lands on the conical surface of the first heating guide body. Hot oil flows through the first oil chamber, heating the fluid material on the conical surface for the first time. The conical surface then guides the fluid material toward the tank wall, causing it to lose momentum and slide down along the tank wall, landing on the upper surface of the convex portion. There, it converges toward the center along the convex portion and drips onto the surface of the second heating guide body, sliding downward along the surface of the second heating guide body. Hot oil flows through the second oil chamber, heating the fluid material a second time, ensuring a sufficient temperature in the middle and lower parts of the flash tank. As the fluid material falls under its own gravity, it evaporates in a liquid film-like manner, enhancing the solvent evaporation process and improving the flash evaporation effect.

[0030] In summary, the flash tank equipment provided by the present invention improves the heat transfer method by configuring the combination of the first heating guide body, the tank wall protrusion and the second heating guide body, effectively increases the heat transfer area and heat transfer intensity, increases the residence time of the fluid material (polymer, solvent and their mixture), and increases the temperature of the lower half of the flash tank, thereby improving the flash evaporation efficiency and ensuring the quality and performance of the polymer product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings:

[0032] Figure 1 A cross-sectional view of a flash tank device provided in one embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the flow of fluid materials inside the flash tank during flash evaporation;

[0034] Figure 3 A schematic diagram of the connection between the first heating guide body, the first oil inlet pipe and the first oil outlet pipe;

[0035] Figure 4 This is an enlarged schematic diagram of the second heating guide body being arranged below the tip of the convex portion of the tank wall;

[0036] Figure 5 is an enlarged schematic diagram of the connection between the second oil inlet pipe and the second oil chamber inlet of the second oil chamber;

[0037] Figure 6 is an enlarged schematic diagram of the connection between the second oil outlet pipe and the second oil chamber outlet of the second oil chamber;

[0038] Figure 7 is a cross-sectional view of the second oil inlet pipe, the second oil outlet pipe and the second heating guide body along the horizontal direction;

[0039] Figure 8 A cross-sectional view of a flash tank device provided in another embodiment of the present invention;

[0040] Figure 9 This is an enlarged schematic diagram of the drive unit installed on the upper top cover. DETAILED DESCRIPTION

[0041] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0042] like Figure 1-4 As shown, a flash tank device provided by one embodiment of the present invention includes a flash tank 1 having a lower end discharge port 11 and an upper end top cover 12, a feed pipe 2 passing downward through the upper end top cover 12 and provided with a spray head 21 at the lower end, an exhaust pipe 3 connected to the upper end top cover 12, a first heating guide body 4 having a first oil cavity 41 and being conical, a first oil path 5 connected to the first heating guide body 4, a second heating guide body 6 having a second oil cavity 61 and being annular, and a second oil path 7 connected to the second heating guide body 6.

[0043] The inner surface of the tank wall of the flash tank 1 is provided with a tank wall protrusion 13 . In the direction from outside to inside, the upper surface 131 of the tank wall protrusion 13 extends obliquely downward, and the lower surface 132 of the tank wall protrusion 13 extends obliquely upward.

[0044] The first heating guide body 4 is suspended between the spray head 21 and the tank wall protrusion 13 . The first heating guide body 4 is used to heat the fluid material and guide the fluid material to flow toward the tank wall protrusion 13 .

[0045] The second heating guide body 6 is arranged on the lower side of the tip portion 133 of the tank wall protrusion 13 . The second heating guide body 6 is used to heat the fluid material and guide the fluid material to flow downward along the wall surface of the second heating guide body 6 .

[0046] The flash tank equipment provided by the present invention includes a flash tank 1, a feed pipe 2, an exhaust pipe 3, a conical first heating guide body 4, a first oil circuit 5, an annular second heating guide body 6 and a second oil circuit 7.

[0047] The bottom of the flash tank 1 is provided with a funnel-shaped lower discharge port 11, and the upper end of the flash tank 1 is removably mounted with an upper cover 12. The inner surface of the flash tank 1 is provided with an inwardly protruding tank wall protrusion 13. The upper and lower surfaces 132 of the tank wall protrusion 13 are inclined surfaces. Specifically, in the direction from outside to inside, the upper surface 131 of the tank wall protrusion 13 extends downwardly and the lower surface 132 of the tank wall protrusion 13 extends upward, so that the end of the tank wall protrusion 13 is a pointed end 133. The cross-section of the tank wall protrusion 13 along the vertical direction is roughly an isosceles triangle. The tank wall protrusion 13 can be a ring provided on the inner surface of the tank wall, or a plurality of tank wall protrusions 13 can be provided along the inner surface of the tank wall.

[0048] Feed pipe 2 is used to supply the polymer fluid to be flashed into flash tank 1. One end of feed pipe 2 is connected to the material supply equipment, and the other end of feed pipe 2 passes through the upper cover 12 from top to bottom and is inserted into flash tank 1. A sealing structure, which can be a sealing ring, is provided between feed pipe 2 and the through-hole of upper cover 12 to achieve a seal. The lower end of feed pipe 2 is located in flash tank 1. A spray head 21 is located at the lower end of feed pipe 2. The bottom surface of spray head 21 is provided with multiple spray holes for spraying the material downward.

[0049] The exhaust pipe 3 is used to discharge the vaporous solvent produced by flash evaporation from the flash tank 1. One end of the exhaust pipe 3 passes through the upper cover 12 from top to bottom and is inserted into the flash tank 1. The other end of the exhaust pipe 3 is connected to a vaporous solvent recovery device to recover the vaporous solvent. In the present invention, the vaporous solvent primarily refers to the gas mixture produced by flash evaporation. A sealing structure is provided between the exhaust pipe 3 and the through-hole of the upper cover 12 to achieve a seal. The sealing structure can be a sealing ring.

[0050] The first heating guide body 4 is conical in shape. Specifically, the upper surface or outer surface of the first heating guide body 4 is conical in shape. The first heating guide body 4 is arranged below the spray head 21. The radius of the first heating guide body 4 gradually increases from top to bottom. As needed, a recess can be provided on the bottom surface of the first heating guide body 4 to reduce the weight of the structure. A first oil cavity 41 is provided in the first heating guide body 4 for hot oil to pass through to heat the fluid material floating on the surface of the first heating guide body 4. The first oil cavity 41 is a cavity structure opened in the first heating guide body 4. The first oil cavity 41 is also conical. The cross section of the first oil cavity 41 along the vertical direction is a V-shaped structure with an opening downward, which allows more hot oil to circulate and a better heating effect.

[0051] The first oil circuit 5 is connected to the first heating guide body 4 and communicates with the first oil chamber 41. The first oil circuit 5 is a circulating oil circuit, connecting the first heating guide body 4, the hot oil supply device, and the oil recovery tank. This allows hot oil from the hot oil supply device to be transferred to the first oil chamber 41, and the heat-exchanged oil flows back from the first oil circuit 5 to the oil recovery tank.

[0052] The first heating guide body 4 is installed in the flash tank 1, located between the spray head 21 and the tank wall protrusion 13. Hot oil is introduced into the first heating guide body 4, which heats and flash-evaporates the fluid material on its surface, enhancing heat transfer. The conical surface of the first heating guide body 4 guides the sprayed, flash-evaporated fluid material toward the tank wall above the tank wall protrusion 13, causing the fluid material to directly turn and impact the tank wall. After impact, the fluid material loses momentum and gradually slides down the wall toward the tank wall protrusion 13. Because the upper and lower surfaces of the tank wall protrusion 13 are inclined, the upper surface 131 guides the fluid material toward the center. The lower surface 132 extends upward at an angle to form a tip 133 with the upper surface 131, from which the fluid material drips directly. The tip 133 of the tank wall protrusion 13 increases the turbulence of the wall film, accelerating steam escape.

[0053] The second heating guide body 6 is mounted below the tip 133 of the tank wall protrusion 13 to receive fluid material dripping from the tip 133. An annular second oil chamber 61 is defined within the second heating guide body 6 for passage of hot oil, heating the fluid material on the surface of the second heating guide body 6 and guiding the fluid material down the wall of the second heating guide body 6.

[0054] The second oil circuit 7 is connected to the second heating guide body 6 and communicates with the second oil chamber 61. The second oil circuit 7 is a circulating oil circuit, connecting the second heating guide body 6, the hot oil supply device, and the oil recovery tank. This allows hot oil from the hot oil supply device to be transferred to the second oil chamber 61, and the heat-exchanged oil flows back from the second oil circuit 7 to the oil recovery tank.

[0055] During flash evaporation, material is fed through feed pipe 2 and sprayed through spray nozzle 21. The sprayed fluid material lands on the conical surface of first heating guide body 4. Hot oil flows through first oil chamber 41, heating the fluid material on the conical surface for the first time. The conical surface then guides the fluid material toward the tank wall, causing it to lose momentum and slide down along the tank wall, landing on upper surface 131 of protrusion 13. It then converges toward the center along upper surface 131 of protrusion 13 and drips onto the surface of second heating guide body 6, sliding downward along the wall of second heating guide body 6. Hot oil flows through second oil chamber 61, heating the fluid material a second time, ensuring a sufficient temperature in the middle and lower portion of flash tank 1. As the fluid material falls under its own gravity, it evaporates in a liquid film-like manner, enhancing the solvent evaporation process and improving the flash evaporation effect.

[0056] In summary, the flash tank equipment provided by the present invention improves the heat transfer mode by configuring the combination of the first heating guide body 4, the tank wall protrusion 13 and the second heating guide body 6, effectively increases the heat transfer area and heat transfer intensity, increases the residence time of the fluid material (polymer, solvent and their mixture), and increases the temperature of the lower half of the flash tank 1, thereby improving the flash evaporation efficiency and ensuring the quality and performance of the polymer product.

[0057] In one embodiment, Figure 4 As shown, the outer diameter of the second heating guide body 6 is smaller than the outer diameter of the tank wall protrusion 13 and larger than the inner diameter of the tank wall protrusion 13. The upper end of the second heating guide body 6 is located between the upper and lower ends of the lower surface 132 of the tank wall protrusion 13, ensuring that fluid material dripping from the tip 133 falls on the top surface of the second heating guide body 6 and then slides downward along the outer and inner annular surfaces of the second heating guide body 6.

[0058] In one embodiment, Figure 1 and Figure 4-7 As shown, the second oil chamber 61 is annular and is provided with a second oil chamber inlet 611 and a second oil chamber outlet 612 which are arranged opposite to each other.

[0059] The second oil circuit 7 includes a hard second oil inlet pipe 71 and a second oil outlet pipe 72 . The second oil inlet pipe 71 passes through the tank wall and is connected to the second oil chamber inlet 611 . The second oil outlet pipe 72 passes through the tank wall and is connected to the second oil chamber outlet 612 .

[0060] The second heating guide body 6 is supported in the flash tank 1 through a second oil inlet pipe 71 and a second oil outlet pipe 72 .

[0061] In this embodiment, the second oil circuit 7 utilizes a rigid second oil inlet pipe 71 and a second oil outlet pipe 72, which can be metal tubes. Corresponding through-holes are provided in the tank wall for the passage of the second oil inlet pipe 71 and the second oil outlet pipe 72. A sealing structure is employed to seal the through-holes in the tank wall. The rigid second oil inlet pipe 71 and the second oil outlet pipe 72 support the second heating deflector 6.

[0062] The second oil chamber 61 is annular and includes a second oil chamber inlet 611 and a second oil chamber outlet 612. The second oil chamber inlet 611 and the second oil chamber outlet 612 are arranged on opposite sides of the second oil chamber 61. The second oil inlet pipe 71 is connected to the second oil chamber inlet 611, and the second oil outlet pipe 72 is connected to the second oil chamber outlet 612. The hot oil entering from the second oil chamber inlet 611 flows through the annular second oil chamber 61 for heat exchange, and then flows out from the second oil chamber outlet 612.

[0063] If necessary, a one-way valve may be provided in the second oil inlet pipe 71 and the second oil outlet pipe 72 , respectively.

[0064] In one embodiment, Figure 5 and Figure 7 As shown, the second oil chamber inlet 611 and the second oil chamber outlet 612 are funnel-shaped, and a porous flow balancing plate 62 is provided in the second oil chamber inlet 611 .

[0065] The second oil chamber inlet 611 gradually expands from outside to inside, allowing hot oil to flow into the second oil chamber 61. A porous flow equalizing plate 62 is provided in the second oil chamber inlet 611. The porous flow equalizing plate 62 is densely covered with a plurality of through holes for hot oil to pass through and evenly distribute the hot oil into the second oil chamber 61.

[0066] The second oil chamber outlet 612 gradually expands in a direction from outside to inside, so that hot oil flows from the second oil chamber 61 to the second oil chamber outlet 612 , and then flows out from the second oil outlet pipe 72 .

[0067] In one embodiment, Figure 7 As shown, a diverter plate 63 extending toward the porous flow balancing plate 62 is provided in the second oil chamber 61 . The diverter plate 63 is arranged perpendicular to the porous flow balancing plate 62 and is located on the center line of the second oil chamber inlet 611 .

[0068] In this embodiment, a diverter plate 63 is provided in the second oil chamber 61 at a position corresponding to the second oil chamber inlet 611. The diverter plate 63 extends toward the porous flow equalizing plate 62 and is located on the center line of the second oil chamber inlet 611, thereby diverting the hot oil to the left and right sections of the annular second oil chamber 61, preventing the hot oil from flowing mainly on one side of the second oil chamber 61.

[0069] In one embodiment, Figure 1 and Figure 8 As shown, the feed pipe 2, the first heating guide body 4, the second heating guide body 6 and the tank wall protrusion 13 are coaxially arranged. The fluid material sprayed downward from the spray head 21 spreads to the surrounding areas with the upper end of the first heating guide body 4 as the center to cover the conical surface of the first heating guide body 4, thereby improving the heating effect.

[0070] In one embodiment, Figure 1-3 and Figure 8 As shown, the bottom surface of the first heating guide body 4 has a tapered groove 42. The tapered groove 42 disturbs the flowing material, gas, etc. so that the flowing material, gas, etc. no longer flows in a specific direction, thereby playing a role of mixing turbulence.

[0071] The cone angle, radius and height of the first heating guide body 4 can be set as needed, and the sharp angle, insertion length, maximum thickness, etc. of the tank wall protrusion 13 can also be set as needed.

[0072] Preferably, the tank wall protrusion 13 is integrally provided on the inner surface of the tank wall, which has high structural strength and is easy to process and form.

[0073] In the present invention, the distance between the bottom surface of the tank wall protrusion 13 and the upper end cover 12 is set to H1, the distance between the bottom surface of the first heating guide body 4 and the upper end cover 12 is set to H2, the distance between the spray head 21 and the upper end cover 12 is set to H3, the maximum thickness of the tank wall protrusion 13 is set to H4, and the height of the second heating guide body 6 is set to H 5。 The above parameters can be set as needed so that the material sprayed from the spray head 21 fully falls on the surface of the first heating guide body 4 and is heated by the first heating guide body 4, so that the fluid material fully absorbs heat on the conical surface of the first heating guide body 4, thereby improving the uniformity of the flash evaporation process and improving the overall flash evaporation efficiency.

[0074] In the present invention, the cone angle or apex angle of the first heating guide body 4 is set to α1, the inner diameter of the bottom surface of the first heating guide body 4 (the bottom opening of the tapered cavity 42) is set to D1, and the outer diameter of the bottom surface of the first heating guide body 4 (the bottom opening of the tapered cavity 42) is set to D2. The cone angle α1 can be adjusted according to the actual viscosity of the polymer fluid, with the optimal adjustment range being between 30° and 60° to ensure optimal flash evaporation. The position, size, and angle of the first heating guide body 4 are controlled by four key parameters: α1, H2, D1, and D2. Precise control of these parameters enables the first heating guide body 4 to adapt to different process conditions and polymer properties, thereby improving the uniformity and efficiency of the flash evaporation process.

[0075] In one embodiment, when the outer diameter D2 of the first heating guide body 4 is between 100-200 mm and the inner diameter D1 is between 80-160 mm, the cone angle α1 can be adjusted based on the actual viscosity of the polymer fluid, with the optimal adjustment range being between 30° and 60°. Simulation results show that flash evaporation efficiency is improved by approximately 20%, and the viscosity of the polymer fluid is significantly reduced. By adjusting the height H2 of the first heating guide body 4 to approximately 200 mm (H2 = 2 × H3), the first heating guide body 4 can more effectively heat the polymer fluid, further improving the flash evaporation efficiency.

[0076] In one embodiment, when the angle α2 of the tip 133 of the tank wall protrusion 13 was set to 60° and the height H4 was 100 mm, simulation results showed that the fluid velocity on the protrusion was reduced to below 0.01 m / s, ensuring that the fluid material could accurately flow to the second heating guide body 6 and form a falling film flow on the hot oil chamber wall. By increasing the number of tank wall protrusions 13 and increasing the angle α2 to above 120°, experimental results showed that the steam overflow rate was accelerated, further improving the flash evaporation efficiency.

[0077] In one embodiment, when the cone angle α3 of the lower discharge port 11 is 30°, experimental results show that the accumulation of polymer is effectively alleviated, the residence time is increased by about 0.5 seconds, and the smooth outflow of the material is promoted.

[0078] In one embodiment, Figure 1 、 Figure 3 and Figure 8 As shown, the first oil chamber 41 is provided with a first oil chamber inlet 411 and a first oil chamber outlet 412 which are arranged opposite to each other.

[0079] The first oil circuit 5 includes a hard first oil inlet pipe 51 and a first oil outlet pipe 52 . The first oil inlet pipe 51 passes through the upper end top cover 12 and is connected to the first oil chamber inlet 411 . The first oil outlet pipe 52 passes through the upper end top cover 12 and is connected to the first oil chamber outlet 412 .

[0080] The first heating guide body 4 is suspended in the flash tank 1 through a first oil inlet pipe 51 and a first oil outlet pipe 52 .

[0081] In this embodiment, a first oil chamber inlet 411 and a first oil chamber outlet 412 are respectively provided on two opposite sides of the first oil chamber 41 .

[0082] The first oil circuit 5 utilizes a rigid first oil inlet pipe 51 and a first oil outlet pipe 52, which can be metal pipes. The first heating guide body 4 is suspended below the spray head 21 via the rigid first oil inlet pipe 51 and the first oil outlet pipe 52. No additional mounting brackets are required to secure the first heating guide body 4, thus reducing the number of mounting brackets and further freeing up space within the flash tank 1, facilitating the flow, mixing, and reaction of gases, solvents, and materials.

[0083] The first oil inlet pipe 51 and the first oil outlet pipe 52 each pass through the upper end cover 12 and are sealed with the through-holes of the upper end cover 12, for example, using a sealing ring. The first oil inlet pipe 51 and the first oil outlet pipe 52 are fixedly connected to the first oil chamber inlet 411 and the first oil chamber outlet 412, respectively. Specifically, the first oil inlet pipe 51 and the first oil outlet pipe 52 are respectively provided with a transversely extending oil inlet pipe cross pipe 511 and an oil outlet pipe cross pipe 521. The oil inlet pipe cross pipe 511 is connected to the first oil chamber inlet 411, and the oil outlet pipe cross pipe 521 is connected to the first oil chamber outlet 412. The provision of the oil inlet pipe cross pipe 511 and the oil outlet pipe cross pipe 521 can increase the distance between the first oil inlet pipe 51 and the first oil outlet pipe 52, thereby avoiding the spray head 21 and the lower edge of the first heating deflector 4 to avoid affecting the flash evaporation effect.

[0084] In one embodiment, Figure 8-9 As shown, the first oil inlet pipe 51 and the first oil outlet pipe 52 are respectively slidably connected to the upper end cover 12.

[0085] A driving device 8 for driving the first oil inlet pipe 51 and the first oil outlet pipe 52 to rise and fall is provided on the upper end cover 12 . The driving device 8 is used to adjust the height of the first heating guide body 4 in the flash tank 1 .

[0086] In this embodiment, sealing rings are installed between the first oil inlet pipe 51 and the first oil outlet pipe 52 and the through holes of the upper end cover 12 , and the first oil inlet pipe 51 and the first oil outlet pipe 52 can slide up and down relative to the upper end cover 12 .

[0087] A driving device 8 is provided on the upper end cover 12, and the oil inlet pipe 51 and the oil outlet pipe 52 are respectively connected to the output ends of the driving device 8. The driving device 8 is used to drive the first oil inlet pipe 51 and the first oil outlet pipe 52 to move up and down relative to the upper end cover 12, thereby adjusting the height of the first heating guide body 4 in the flash tank 1, so as to adjust the distance between the first heating guide body 4 and the spray head 21, and also adjust the distance between the first heating guide body 4 and the tank wall protrusion 13.

[0088] The driving device 8 can adopt a piston mechanism, a motor screw mechanism, etc.

[0089] In one embodiment, Figure 8-9As shown, the driving device 8 includes two sets of driving mechanisms 81 and a lifting plate 82.

[0090] The two sets of driving mechanisms 81 are connected to opposite sides of the upper cover 12 , and the lifting plate 82 is connected between the output ends of the two sets of driving mechanisms 81 .

[0091] The first oil inlet pipe 51 and the first oil outlet pipe 52 respectively pass through the lifting plate 82 and are fixedly connected to the lifting plate 82 .

[0092] In this embodiment, the drive device 8 includes two drive mechanisms 81 and a lifting plate 82. The drive mechanism 81 can be a pneumatic cylinder, an oil cylinder, or the like. The two drive mechanisms 81 are connected to opposite sides of the upper cover 12. Preferably, the first oil inlet pipe 51 and the first oil outlet pipe 52 are located between the two drive mechanisms 81 and are aligned. The lifting plate 82 is connected between the output ends of the two drive mechanisms 81 and is located above the cover 12. Preferably, a lifting plate opening 621 is provided on the lifting plate 82 to provide clearance for the exhaust pipe 3 and the feed pipe 2.

[0093] The first oil inlet pipe 51 and the first oil outlet pipe 52 respectively pass through the lifting plate 82 and are fixedly connected to the lifting plate 82 by fasteners. The fasteners can be nuts, clamps, etc.

[0094] The two sets of driving mechanisms 81 are actuated synchronously, and the two sets of driving mechanisms 81 drive the lifting plate 82 to rise and fall smoothly as a whole, thereby driving the first oil inlet pipe 51 and the first oil outlet pipe 52 to rise and fall synchronously, and finally driving the first heating guide body 4 to rise and fall smoothly in the flash tank 1 to adjust the height.

[0095] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0096] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other variations can be made based on the principles of the present invention, which should also be considered as the scope of protection of the present invention.

Claims

1. A flash tank device, characterized in that: The flash tank comprises a flash tank having a lower discharge port and an upper cover, a feed pipe passing downward through the upper cover and provided with a spray nozzle at the lower end, an exhaust pipe connected to the upper cover, a first heating guide body having a first oil cavity and a conical shape, a first oil circuit connected to the first heating guide body, a second heating guide body having a second oil cavity and a ring shape, and a second oil circuit connected to the second heating guide body; The inner surface of the tank wall of the flash tank is provided with a tank wall protrusion, and in the direction from the outside to the inside, the upper surface of the tank wall protrusion extends obliquely downward, and the lower surface of the tank wall protrusion extends obliquely upward; The first heating guide body is suspended between the spray head and the convex portion of the tank wall, and the first heating guide body is used to heat the fluid material and guide the fluid material to flow toward the convex portion of the tank wall; The second heating guide body is arranged on the lower side of the tip portion of the tank wall protrusion. The second heating guide body is used to heat the fluid material and guide the fluid material to flow downward along the wall surface of the second heating guide body.

2. The flash tank equipment according to claim 1, characterized in that The outer diameter of the second heating guide body is smaller than the outer diameter of the convex portion of the tank wall and larger than the inner diameter of the convex portion of the tank wall; The upper end of the second heating guide body is located between the upper and lower ends of the lower surface of the tank wall protrusion.

3. The flash tank equipment according to claim 1, characterized in that The second oil chamber is annular and is provided with a second oil chamber inlet and a second oil chamber outlet which are arranged opposite to each other; The second oil circuit includes a hard second oil inlet pipe and a hard second oil outlet pipe, the second oil inlet pipe passes through the tank wall and is connected to the inlet of the second oil chamber, and the second oil outlet pipe passes through the tank wall and is connected to the outlet of the second oil chamber; The second heating guide body is supported in the flash tank through the second oil inlet pipe and the second oil outlet pipe.

4. The flash tank equipment according to claim 3, characterized in that The second oil chamber inlet and the second oil chamber outlet are funnel-shaped respectively, and a porous flow balancing plate is provided in the second oil chamber inlet.

5. The flash tank equipment according to claim 4, characterized in that A diverter plate extending toward the multi-porous flow balancing plate is provided in the second oil chamber. The diverter plate is arranged perpendicular to the multi-porous flow balancing plate and is located on the center line of the inlet of the second oil chamber.

6. The flash tank equipment according to claim 1, characterized in that The feed pipe, the first heating guide body, the second heating guide body and the tank wall protrusion are coaxially arranged.

7. The flash tank equipment according to claim 1, characterized in that The bottom surface of the first heating guide body has a tapered groove.

8. The flash tank equipment according to claim 1, characterized in that The first oil chamber is provided with a first oil chamber inlet and a first oil chamber outlet which are arranged opposite to each other; The first oil circuit includes a hard first oil inlet pipe and a first oil outlet pipe, the first oil inlet pipe passes through the upper end cover and is connected to the inlet of the first oil chamber, and the first oil outlet pipe passes through the upper end cover and is connected to the outlet of the first oil chamber; The first heating guide body is suspended in the flash tank through the first oil inlet pipe and the first oil outlet pipe.

9. The flash tank equipment according to claim 8, characterized in that The first oil inlet pipe and the first oil outlet pipe are respectively slidably connected to the upper end cover; A driving device for driving the first oil inlet pipe and the first oil outlet pipe to rise and fall is provided on the upper end cover, and the driving device is used to adjust the height of the first heating guide body in the flash tank.

10. The flash tank equipment according to claim 9, characterized in that The driving device includes two sets of driving mechanisms and a lifting plate; The two sets of driving mechanisms are connected to opposite sides of the upper cover, and the lifting plate is connected between the output ends of the two sets of driving mechanisms; The first oil inlet pipe and the first oil outlet pipe respectively pass through the lifting plate and are fixedly connected to the lifting plate.

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