A butadiene vaporization device

Abstract

The present invention discloses a butadiene vaporization device, comprising a water bath vaporizer, wherein a liquid inlet pipe for butadiene liquid to enter is fixed to the top of a tank body of the water bath vaporizer, and the device further comprises a cross-flow mixing tube mechanism, a Venturi mixing tube mechanism, and a split-swirl mixing tube mechanism. The present invention arranges the cross-flow mixing tube mechanism, the Venturi mixing tube mechanism, and the split-swirl mixing tube mechanism between the water bath vaporizer and a static mixer for butadiene vaporization. The cross-flow mixing tube mechanism, the Venturi mixing tube mechanism, and the split-swirl mixing tube mechanism are combined to construct a unique multi-stage mixing system, which effectively assists in the efficient mixing of butadiene liquid and a polymerization inhibitor. The present invention significantly improves the mixing effect of the polymerization inhibitor and butadiene, effectively inhibits the addition polymerization reaction of butadiene during the vaporization process, reduces the blockage of the pipeline by the polymer, thereby ensuring the normal operation of the water bath vaporizer and improving the vaporization treatment efficiency of butadiene.

Description

Technical Field

[0001] The present invention relates to the technical field of butadiene vaporization, in particular to a butadiene vaporization device. Background Art

[0002] Butadiene is an important organic chemical raw material and synthetic rubber monomer. It is a gas at room temperature and pressure. Liquefying or solidifying butadiene and then vaporizing it facilitates transportation and storage under specific conditions. For example, butadiene can be liquefied under high pressure and low temperature conditions and stored in specialized storage tanks or tank trucks. After being transported to the site of use, it is converted to a gaseous state through vaporization for subsequent use. Gaseous butadiene can be precisely metered and transported using flow control equipment, facilitating precise control of its dosage in the reaction. This is crucial for ensuring the consistency of chemical reactions and the stability of product quality.

[0003] When vaporizing butadiene, a water-bath vaporizer is often used. This method is based on indirect heat exchange and phase change control: Shell-side hot water (60-90°C) transfers heat to the liquid butadiene in the tube side through finned or spirally grooved tubes, raising its temperature to the boiling point at the operating pressure (e.g., approximately 25°C at 0.5 MPa). The latent heat of vaporization (approximately 389 kJ / kg) is absorbed and converted to the gas phase. Stable vaporization is ensured by constant hot water temperature control (±1°C) and superheat regulation (the outlet temperature is kept 5-10°C above the boiling point).

[0004] Currently, when butadiene is vaporized, changes in temperature, pressure and other conditions may cause addition polymerization reactions between butadiene molecules during the vaporization process of butadiene in a water bath vaporizer, thereby easily forming polymers that block the pipeline. During the butadiene vaporization process, polymerization inhibitors are usually added to react with butadiene free radicals to inhibit the formation of polymers. However, when adding polymerization inhibitors to a water bath vaporizer, the polymerization inhibitors are usually added through a simple static mixer. The internal mixing aid structure of this static mixer is mostly a simple spiral blade, which has limited mixing effect on the polymerization inhibitor and butadiene, resulting in poor polymerization inhibition effect when butadiene enters the water bath vaporizer for vaporization, thereby affecting the vaporization treatment efficiency of the water bath vaporizer for butadiene. To this end, we propose a butadiene vaporization device. Summary of the Invention

[0005] The main purpose of the present invention is to provide a butadiene vaporization device. The present invention sets a cross-flow mixing tube mechanism, a venturi mixing tube mechanism and a swirl mixing tube mechanism between a water bath vaporizer and a static mixer for butadiene vaporization. The combination of the cross-flow mixing tube mechanism, the venturi mixing tube mechanism and the swirl mixing tube mechanism constructs a unique multi-stage mixing system, which effectively assists the efficient mixing of butadiene liquid and polymerization inhibitor. In the special cross-flow mixing tube mechanism of the present invention, the mixture of butadiene liquid and polymerization inhibitor flows along the staggered low dislocation plates, medium dislocation plates and high dislocation plates. At the same time, the corrosion-resistant airbag block can be controllably bulged and expanded to change the liquid flow path and height difference, which greatly improves the mixing effect. The venturi mixing tube mechanism of the present invention utilizes a venturi structure composed of a conical diffuser, a throat connecting tube and a conical contraction tube to achieve sufficient mixing of the polymerization inhibitor and the butadiene liquid. The spiral guide member in the tube causes the fluid to form a spiral flow, and the vibration motor in the round head box generates vibration flow, which further promotes the mixing of butadiene liquid and inhibitor, ensuring more uniform mixing. The split-vortex mixing tube mechanism of the present invention first collects the butadiene liquid and inhibitor mixture through the conical top-contracted tube, and then realizes basket-type liquid dispersion at the conical dispersion basket and dispersion ring. Finally, the spiral disk flow member causes the mixture fluid to form a disk flow, further mixing the butadiene liquid and inhibitor mixture evenly, significantly improving the mixing quality of the inhibitor and butadiene. The present invention effectively inhibits the addition polymerization reaction of butadiene during the vaporization process by significantly improving the mixing effect of the inhibitor and butadiene, reduces the blockage of the pipeline by the polymer, thereby ensuring the normal operation of the water bath vaporizer, improving the vaporization treatment efficiency of butadiene, and can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A butadiene vaporization device comprises a water bath vaporizer, wherein a liquid inlet pipe for the entry of butadiene liquid is fixed at the top of a tank body of the water bath vaporizer, and further comprises a cross-flow mixing pipe mechanism, a Venturi mixing pipe mechanism, and a swirl mixing pipe mechanism. The top of the liquid inlet pipe is interconnected with a cross-flow mixing pipe mechanism for the circuitous entry of butadiene liquid and a polymerization inhibitor, and the upper part of the cross-flow mixing pipe mechanism is interconnected with a Venturi mixing pipe mechanism for oscillatory flow polymerization of butadiene liquid and polymerization inhibitor, and the upper part of the Venturi mixing pipe mechanism is welded with a swirl mixing pipe mechanism for connecting to an external static mixer for basket-disk flow polymerization of butadiene liquid and polymerization inhibitor.

[0008] Furthermore, the cross-flow mixing pipe mechanism includes an upper cone guide pipe, a low dislocation plate, a middle dislocation plate, a high dislocation plate, a corrosion-resistant airbag block and a through-tube. A flange base plate is welded on the outer tube body of the bottom end of the upper cone guide pipe, and the flange base plate is connected to the flange of the liquid inlet pipe. The low dislocation plate, the middle dislocation plate and the high dislocation plate are welded in a staggered and distributed manner from bottom to top in the conical tube cavity of the upper cone guide pipe. The upper plate surfaces of the low dislocation plate and the middle dislocation plate are bonded and supported with a corrosion-resistant airbag block for expansion and lifting, and the two ends of the corrosion-resistant airbag block are interconnected and fixed with a through-tube for passing through the upper cone guide pipe for ventilation.

[0009] By adopting the above preferred technical solution, after the flange base plate is welded below the upper cone guide pipe, bolts can be passed between the flange base plate and the flange plate of the pipe body of the liquid inlet pipe, and nuts are screwed on the bolts to realize the flange connection between the flange base plate and the liquid inlet pipe, and the upper cone guide pipe where the flange base plate is located has low dislocation plates, middle dislocation plates and high dislocation plates staggeredly distributed, and the corrosion-resistant airbag blocks bonded to the surfaces of the low dislocation plates and middle dislocation plates can be ventilated and expanded, and then the through-tube of the corrosion-resistant airbag block passes through the upper cone guide pipe and is connected to the outside with the help of an air valve to provide compression. The gas equipment allows the corrosion-resistant airbag block to exhaust or intake air with the help of the two sets of pipes of the through-tube, which facilitates the control of the expansion of the corrosion-resistant airbag block. After the butadiene liquid and the polymerization inhibitor mixture enter the upper cone guide pipe, the butadiene liquid and the polymerization inhibitor mixture can flow downward along the high dislocation plate, the medium dislocation plate and the low dislocation plate, and the corrosion-resistant airbag blocks of the low dislocation plate and the medium dislocation plate can be controlled to bulge and expand, changing the height difference between the low dislocation plate and the medium dislocation plate, thereby improving the mixing effect of the butadiene liquid and the polymerization inhibitor mixture when they flow in a circuitous manner.

[0010] Furthermore, a rubber gasket is pressed between the flange base plate below the upper cone guide pipe and the liquid inlet pipe, and a sheet hole is opened on the surface of the rubber gasket and is vertically interconnected with the hole position on the surface of the flange base plate;

[0011] By adopting the above preferred technical solution, when the upper cone guide pipe is connected to the liquid inlet pipe with the help of the flange base plate, a rubber gasket can be pressed between the flange base plate and the flange of the liquid inlet pipe, thereby improving the sealing performance and preventing leakage of butadiene liquid and inhibitor.

[0012] Furthermore, the tapered tube body of the upper tapered guide tube is symmetrically provided with through holes, and a through tube is inserted into the through hole and extended out, and the through tube is bonded and fixed to the hole wall of the through hole;

[0013] By adopting the above-mentioned preferred technical solution, the through-tube can be inserted and bonded at the through-hole of the upper cone guide tube, so that the corrosion-resistant airbag block can be ventilated to the outside world, realizing its expansion and contraction functions, thereby better adjusting the fluid state in the upper cone guide tube and optimizing the mixing effect.

[0014] Furthermore, the top end of the upper cone guide tube is screwed with a screw-on tube of a Venturi mixing tube mechanism, and the Venturi mixing tube mechanism includes a screw-on tube, a conical diffuser, a throat connecting tube, a conical shrinking tube, a spiral flow guide, a round head inlet box and a vibration motor. The screw-on tube is welded in the lower tube opening of the conical diffuser, and the upper shrinking tube opening of the conical diffuser is welded to the lower shrinking tube opening of the conical shrinking tube through the throat connecting tube. A round head inlet box for convexly reducing the diameter of the tube body is inserted into the tube body of the throat connecting tube, and a vibration motor is installed in the round head inlet box.

[0015] By adopting the above-mentioned preferred technical scheme, the conical diffuser of the Venturi mixing tube mechanism can be screwed and installed in the upper conical guide tube with the help of a screw-on tube, and then the conical contraction tube connected to the conical diffuser with the throat connecting tube can receive the butadiene liquid and the polymerization inhibitor mixture to enter. The butadiene liquid and the polymerization inhibitor mixture shrink along the conical contraction tube, gather and mix, and then can enter the conical diffuser rod through the throat connecting tube for diffusion. The conical diffuser, throat connecting tube and conical contraction tube constitute a Venturi structure. According to the Venturi effect, the flow velocity of the fluid increases and the pressure decreases when passing through the throat connecting tube, so that the polymerization inhibitor and the butadiene liquid mixture can be fully mixed. The spiral guide piece in the throat connecting tube can make the polymerization inhibitor and butadiene liquid mixture fluid form a spiral flow, further increasing the mixing effect. There is a round head inlet box at the throat connecting tube that extends into the tube. The vibration motor in the round head inlet box can be connected to electricity for vibration, so that the polymerization inhibitor and butadiene liquid mixture fluid in the throat connecting tube can produce vibration flow, promote the polymerization of butadiene liquid and the polymerization inhibitor, and make the mixing more uniform.

[0016] Furthermore, an L-shaped hook guide groove is symmetrically opened on the vertical wall of the box cavity on one side of the round head entry box, and an L-shaped hook guide strip welded on the side of the side connecting plate is clamped in the L-shaped hook guide groove, a round head support plate for pressing into the round head entry box is welded under the plate body of the side connecting plate, and a vibration motor is locked on the surface of the round head support plate by a bolt, and a plate hole for inward insertion of the bolt is opened between the box body of the round head entry box where the throat connection pipe is exposed and the side connecting plate, and the bolt passes through the bolt body of the side connecting plate and is screwed with a nut;

[0017] By adopting the above-mentioned preferred technical solution, after the vibration motor is installed on the surface of the round head support plate, the round head support plate is pushed into the round head box in conjunction with the side connecting plate. At the same time, the side connecting plate is guided and clamped in the L-shaped hook guide groove of the round head box with an L-shaped hook guide bar, which makes it convenient for the round head support plate to carry the vibration motor into the round head box to provide a vibration source and provide power for vibration-flow mixing. At the same time, this installation method facilitates the maintenance and replacement of the vibration motor.

[0018] Furthermore, the conical shrinkage tube above the throat connecting pipe is interconnected and welded in the primary connecting pipe of the split-vortex mixing pipe mechanism, and the split-vortex mixing pipe mechanism includes the primary connecting pipe, the conical top shrinkage tube, the bulk ring, the support ring, the spiral disk flow piece and the conical dispersion basket. The primary connecting pipe is welded with a flange connection plate at the top pipe mouth away from the throat connecting pipe, and a rubber gasket is pressed on the surface of the flange connection plate. The primary connecting pipe below the flange connection plate is welded with a support ring and a spiral disk flow piece in sequence from top to bottom. The bulk ring is supported on the surface of the support ring, and a conical dispersion basket is installed inside the bulk ring. The conical top shrinkage tube is screwed and installed in the primary connecting pipe above the bulk ring.

[0019] By adopting the above-mentioned preferred technical scheme, the primary connecting pipe of the split-rotation mixing pipe mechanism can be connected to the conical shrinkage pipe by welding, and then the primary connecting pipe can support the scattered ring with a supporting ring, and the scattered ring is equipped with a conical dispersion basket, and then the primary connecting pipe above the scattered ring can be screwed and installed with a conical top shrinkage pipe, and the top of the primary connecting pipe is flange-connected to the static mixer commonly used for mixing butadiene and inhibitor with a flange equipped with a rubber gasket, so that butadiene and inhibitor can be added and mixed at the static mixer and then enter the primary connecting pipe for mixing, and the butadiene liquid and the inhibitor mixture are first collected in the primary connecting pipe with the conical top shrinkage pipe, and then the butadiene liquid and the inhibitor mixture are dispersed in a basket-type manner at the conical dispersion basket and the scattered ring, and then the spiral disk flow element forms a disk flow for the butadiene liquid and the inhibitor mixture to further mix the butadiene liquid and the inhibitor mixture evenly.

[0020] Furthermore, a tray is welded to the inner ring wall of the dispersion ring through a sharp connecting plate, and a conical dispersion basket is supported on the surface of the tray. The lower part of the basket body of the conical dispersion basket is welded to the dispersion ring through a cylinder, and a rectangular basket groove is opened on the conical surface of the basket body of the conical dispersion basket. The ring body diameter of the dispersion ring is smaller than the lumen diameter of the initial pipe.

[0021] By adopting the above-mentioned preferred technical solution, the tray welded with a sharp connecting plate inside the dispersion ring can support the conical dispersion basket, and the conical dispersion basket can be firmly connected with the cylindrical welded dispersion ring. At the same time, the conical dispersion basket has a rectangular basket groove on the basket body to disperse the butadiene liquid and the inhibitor mixture fluid for auxiliary mixing.

[0022] Furthermore, the inner tube wall of the primary tube above the loose ring and the outer tube wall of the conical top reduction tube are provided with threads for mutual rotation, and a cross bar is welded in the straight tube cavity of the conical top reduction tube;

[0023] By adopting the above preferred technical solution, the conical top shrink tube can be screwed and installed in the initial pipe, and there is a cross bar at the conical top shrink tube that can be held by hand, which facilitates the screwing operation of the conical top shrink tube in the initial pipe.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a cross-flow mixing tube mechanism, a Venturi mixing tube mechanism and a split-swirl mixing tube mechanism between a water bath vaporizer and a static mixer for butadiene vaporization. The cross-flow mixing tube mechanism, the Venturi mixing tube mechanism and the split-swirl mixing tube mechanism are combined to construct a unique multi-stage mixing system, which effectively assists in the efficient mixing of butadiene liquid and polymerization inhibitor.

[0026] In addition, in the special cross-flow mixing tube mechanism of the present invention, the mixture of butadiene liquid and polymerization inhibitor flows in a circuitous manner along the staggered low-dislocation plates, medium-dislocation plates and high-dislocation plates. At the same time, the corrosion-resistant airbag blocks can be controlled to bulge and expand, changing the liquid flow path and height difference, greatly improving the mixing effect.

[0027] At the same time, the Venturi mixing tube mechanism of the present invention utilizes a Venturi structure composed of a conical diffuser, a throat connecting tube, and a conical contraction tube to achieve full mixing of the polymerization inhibitor and the butadiene liquid. The spiral flow guide in the throat connecting tube promotes spiral flow of the fluid, and the vibration motor in the round head box generates vibration flow, which further promotes the polymerization mixing of the butadiene liquid and the polymerization inhibitor, ensuring more uniform mixing.

[0028] Finally, the split-rotation mixing tube mechanism of the present invention first collects the butadiene liquid and the polymerization inhibitor mixture through the conical top-contracting tube, then realizes basket-type liquid dispersion at the conical dispersion basket and dispersion ring, and finally forms a spiral disk flow by the spiral disk flow element to further mix the butadiene liquid and the polymerization inhibitor mixture uniformly, thereby significantly improving the mixing quality of the polymerization inhibitor and butadiene;

[0029] The present invention significantly improves the mixing effect of the polymerization inhibitor and butadiene, effectively inhibits the addition polymerization reaction of butadiene during the vaporization process, reduces the blockage of the pipeline by the polymer, thereby ensuring the normal operation of the water bath vaporizer and improving the vaporization treatment efficiency of butadiene. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The figure is a schematic diagram of the overall structure of a butadiene vaporization device of the present invention.

[0031] Figure 2 This is a schematic diagram of the disassembly of the liquid inlet pipe and the cross-flow mixing pipe mechanism of a butadiene vaporization device of the present invention.

[0032] Figure 3 The present invention is a schematic diagram of the cross-flow mixing tube mechanism, the Venturi mixing tube mechanism and the split-swirl mixing tube mechanism of a butadiene vaporization device.

[0033] Figure 4 This is an exploded view of a cross-flow mixing tube mechanism of a butadiene vaporization device of the present invention.

[0034] Figure 5 This is an exploded view of the Venturi mixing tube mechanism of a butadiene vaporization device of the present invention.

[0035] Figure 6 This is a cross-sectional view of the Venturi mixing tube mechanism of a butadiene vaporization device of the present invention.

[0036] Figure 7 This is an exploded view of the split-swirl mixing tube mechanism of a butadiene vaporization device of the present invention.

[0037] Figure 8 This is a cross-sectional view of the split-swirl mixing tube mechanism of a butadiene vaporization device of the present invention.

[0038] Figure 9 This is a schematic diagram of the separation of the conical dispersion basket and dispersion ring of a butadiene vaporization device of the present invention.

[0039] Figure 10 This is a schematic diagram of the disassembly of the side connecting plate and round head box of a butadiene vaporization device of the present invention.

[0040] In the figure: 1. Water bath vaporizer; 2. Liquid inlet pipe; 3. Cross-flow mixing pipe mechanism; 4. Venturi mixing pipe mechanism; 5. Split-vortex mixing pipe mechanism; 6. Flange base plate; 7. Upper cone guide pipe; 8. Low offset plate; 9. Middle offset plate; 10. High offset plate; 11. Corrosion-resistant airbag block; 12. Through-tube; 13. Rubber gasket; 14. Through-hole; 15. Spin-on pipe; 16. Conical diffuser; 17. Throat connecting pipe; 18. Conical contraction pipe; 19. Spiral guide piece; 20. Round head box; 21. Side connecting plate; 22. Round head support plate; 23. Vibration motor; 24. Initial connecting pipe; 25. Flange connecting plate; 26. Conical top contraction pipe; 27. Dispersion ring; 28. Support ring; 29. ​​Spiral disk flow piece; 30. Conical dispersion basket; 31. Tray; 32. Spiral connecting plate. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0042] like Figure 1-10 As shown, a butadiene vaporization device includes a water bath vaporizer 1, a liquid inlet pipe 2 for the entry of butadiene liquid is fixed at the top of the tank body of the water bath vaporizer 1, and also includes a cross-flow mixing pipe mechanism 3, a Venturi mixing pipe mechanism 4 and a cyclone mixing pipe mechanism 5. The top of the liquid inlet pipe 2 is interconnected with the cross-flow mixing pipe mechanism 3 for the circuitous mixing of butadiene liquid and polymerization inhibitor, and the upper part of the cross-flow mixing pipe mechanism 3 is interconnected with the Venturi mixing pipe mechanism 4 for the oscillation flow mixing of butadiene liquid and polymerization inhibitor, and the upper part of the Venturi mixing pipe mechanism 4 is welded with a cyclone mixing pipe mechanism 5 for connecting to an external static mixer for basket-disk flow mixing of butadiene liquid and polymerization inhibitor.

[0043] Among them, the cross-flow mixing tube mechanism 3 includes an upper cone guide tube 7, a low dislocation plate 8, a medium dislocation plate 9, a high dislocation plate 10, a corrosion-resistant airbag block 11 and a through-tube 12. The bottom end of the upper cone guide tube 7 is welded with a flange base plate 6 outside the tube body, and the flange base plate 6 is flange-connected to the flange of the tube body of the liquid inlet pipe 2. The low dislocation plate 8, the medium dislocation plate 9 and the high dislocation plate 10 are welded in a staggered and distributed manner from bottom to top in the conical tube cavity of the upper cone guide tube 7. The upper plate surfaces of the low dislocation plate 8 and the medium dislocation plate 9 are bonded and supported with a corrosion-resistant airbag block 11 for expansion and rising, and the two ends of the corrosion-resistant airbag block 11 are interconnected and fixed with a through-tube 12 for passing through the upper cone guide tube 7 for ventilation;

[0044] By adopting the above preferred technical solution, after the flange base plate 6 is welded below the upper cone guide pipe 7, bolts can be passed between the flange base plate 6 and the flange plate of the pipe body of the liquid inlet pipe 2, and nuts are screwed on the bolts to realize the flange connection between the flange base plate 6 and the liquid inlet pipe 2, and the upper cone guide pipe 7 where the flange base plate 6 is located has low dislocation plates 8, middle dislocation plates 9 and high dislocation plates 10 distributed in a staggered manner, and the corrosion-resistant airbag blocks 11 bonded to the surfaces of the low dislocation plates 8 and the middle dislocation plates 9 can be ventilated and expanded, and then the through-tube 12 of the corrosion-resistant airbag block 11 passes through the upper cone guide pipe 7 and is connected to the external supply by means of an air valve. The compressed gas equipment allows the corrosion-resistant airbag block 11 to exhaust or intake air with the help of the two sets of tubes of the through tube 12, which facilitates the control of the expansion of the corrosion-resistant airbag block 11. After the butadiene liquid and the inhibitor mixture enter the upper cone guide tube 7, the butadiene liquid and the inhibitor mixture can flow downward along the high dislocation plate 10, the medium dislocation plate 9 and the low dislocation plate 8, and the corrosion-resistant airbag block 11 of the low dislocation plate 8 and the medium dislocation plate 9 can be controlled to bulge and expand, changing the height difference between the low dislocation plate 8 and the medium dislocation plate 9, thereby improving the mixing effect of the butadiene liquid and the inhibitor mixture when they flow in a circuitous manner.

[0045] Among them, a rubber gasket 13 is pressed between the flange base plate 6 below the upper cone guide pipe 7 and the liquid inlet pipe 2, and a sheet hole is opened on the surface of the rubber gasket 13, which is vertically interconnected with the hole position on the surface of the flange base plate 6;

[0046] By adopting the above preferred technical solution, when the upper cone guide pipe 7 is connected to the liquid inlet pipe 2 with the help of the flange base plate 6, a rubber gasket 13 can be pressed between the flange base plate 6 and the flange of the liquid inlet pipe 2, thereby improving the sealing performance and preventing the leakage of butadiene liquid and inhibitor.

[0047] The tapered tube body of the upper tapered guide tube 7 is symmetrically provided with a through hole 14, and a through tube 12 is inserted into the through hole 14 and extends out, and the through tube 12 is bonded and fixed to the hole wall of the through hole 14;

[0048] By adopting the above-mentioned preferred technical solution, the through-tube 12 can be inserted and bonded at the through-hole 14 of the upper cone guide tube 7, so that the corrosion-resistant airbag block 11 can be ventilated to the outside world and realize its expansion and contraction functions, thereby better adjusting the fluid state in the upper cone guide tube 7 and optimizing the mixing effect.

[0049] Among them, the top end of the upper cone guide pipe 7 is screwed with the screw-on tube 15 of the Venturi mixing tube mechanism 4, and the Venturi mixing tube mechanism 4 includes the screw-on tube 15, the conical diffuser 16, the throat connecting tube 17, the conical shrink tube 18, the spiral guide 19, the round head into the box 20 and the vibration motor 23, the screw-on tube 15 is welded in the lower tube mouth of the conical diffuser 16, and the upper end shrink tube mouth of the conical diffuser 16 is welded to the lower end shrink tube mouth of the conical shrink tube 18 through the throat connecting tube 17, and the throat connecting tube 17 is inserted into the tube body of the tube body with a round head into the box 20 for convex and conical reduction, and the vibration motor 23 is installed in the round head into the box 20;

[0050] By adopting the above preferred technical solution, the conical diffusion tube 16 of the venturi mixing tube mechanism 4 can be screwed and installed in the upper cone guide tube 7 with the help of the screw-on tube 15, and then the conical contraction tube 18 connected to the conical diffusion tube 16 with the throat connecting tube 17 can receive the butadiene liquid and the polymerization inhibitor mixture, and the butadiene liquid and the polymerization inhibitor mixture can be contracted and mixed along the conical contraction tube 18 and then enter the conical diffusion rod 16 through the throat connecting tube 17 for diffusion. The conical diffusion tube 16, the throat connecting tube 17 and the conical contraction tube 18 form a venturi structure. According to the venturi The throat connecting pipe 17 has an effect that the flow velocity of the fluid increases and the pressure decreases when the fluid passes through the throat connecting pipe 17, so that the polymerization inhibitor and the butadiene liquid mixture can be fully mixed. The spiral guide member 19 in the throat connecting pipe 17 can make the polymerization inhibitor and butadiene liquid mixture fluid form a spiral flow, further increasing the mixing effect. The throat connecting pipe 17 is provided with a round head inlet box 20 extending into the pipe. The vibration motor 23 in the round head inlet box 20 can be connected to electricity for vibration, so that the polymerization inhibitor and butadiene liquid mixture fluid in the throat connecting pipe 17 can generate a vibration flow, promote the polymerization and mixing of the butadiene liquid and the polymerization inhibitor, and make the mixing more uniform.

[0051] Among them, an L-shaped hook guide groove is symmetrically opened on the vertical wall of the box cavity on one side of the round head entry box 20, and an L-shaped hook guide strip welded on the side of the side connecting plate 21 is clamped in the L-shaped hook guide groove. A round head support plate 22 for pressing into the round head entry box 20 is welded under the plate body of the side connecting plate 21, and a vibration motor 23 is locked on the surface of the round head support plate 22 by bolts. A plate hole for inward insertion of a bolt is opened between the box body of the round head entry box 20 where the throat connecting pipe 17 is exposed and the side connecting plate 21, and the bolt passes through the bolt body of the side connecting plate 21 and is screwed with a nut;

[0052] By adopting the above-mentioned preferred technical solution, after the vibration motor 23 is installed on the surface of the round head support plate 22, the round head support plate 22 cooperates with the side connecting plate 21 to push into the round head box 20, and at the same time, the side connecting plate 21 is guided and clamped in the L-shaped hook guide groove of the round head box 20 with an L-shaped hook guide bar, which makes it convenient for the round head support plate 22 to carry the vibration motor 23 into the round head box 20 to provide a vibration source and provide power for vibration-flow mixing. At the same time, this installation method facilitates the maintenance and replacement of the vibration motor 23.

[0053] Among them, the conical shrinkage tube 18 above the throat connecting pipe 17 is welded to the primary connecting pipe 24 of the split-rotation mixing pipe mechanism 5, and the split-rotation mixing pipe mechanism 5 includes the primary connecting pipe 24, the conical top shrinkage tube 26, the bulk ring 27, the support ring 28, the spiral disk flow piece 29 and the conical dispersion basket 30. The primary connecting pipe 24 is welded with a flange connection plate 25 at the top pipe mouth away from the throat connecting pipe 17, and a rubber gasket 13 is pressed on the surface of the flange connection plate 25. The primary connecting pipe 24 below the flange connection plate 25 is welded with a support ring 28 and a spiral disk flow piece 29 in sequence from top to bottom. The bulk ring 27 is supported on the surface of the support ring 28, and a conical dispersion basket 30 is installed inside the bulk ring 27. The conical top shrinkage tube 26 is screwed and installed in the primary connecting pipe 24 above the bulk ring 27.

[0054] By adopting the above-mentioned preferred technical scheme, the initial connecting pipe 24 of the split-rotation mixing pipe mechanism 5 can be welded and connected with the conical shrinkage pipe 18, and then the support ring 28 in the initial connecting pipe 24 can support the bulk ring 27, and the conical dispersion basket 30 is arranged in the bulk ring 27, and then the conical top shrinkage pipe 26 can be screwed and installed in the initial connecting pipe 24 above the bulk ring 27, and the flange connection plate 25 with a rubber gasket 13 at the top of the initial connecting pipe 24 is flange-connected to the static mixer commonly used for mixing butadiene and inhibitor, so that butadiene and inhibitor can be added and mixed at the static mixer and then enter the initial connecting pipe 24 for mixing. First, the butadiene liquid and the inhibitor mixture are collected in the initial connecting pipe 24 with the conical top shrinkage pipe 26, and then the butadiene liquid and the inhibitor mixture are dispersed in a basket-type liquid manner at the conical dispersion basket 30 and the bulk ring 27, and then the spiral disk flow member 29 forms a disk flow for the butadiene liquid and the inhibitor mixture to further mix the butadiene liquid and the inhibitor mixture evenly.

[0055] The inner ring wall of the dispersed ring 27 is welded with a tray 31 through a sharp connecting plate 32, and a conical dispersion basket 30 is supported on the surface of the tray 31. The lower part of the basket body of the conical dispersion basket 30 is welded to the dispersed ring 27 through a cylinder, and a rectangular basket groove is opened on the conical surface of the basket body of the conical dispersion basket 30. The ring body diameter of the dispersed ring 27 is smaller than the lumen diameter of the primary pipe 24;

[0056] By adopting the above-mentioned preferred technical solution, the tray 31 welded with the sharp connecting plate 32 inside the scattered ring 27 can support the conical dispersion basket 30. At the same time, the conical dispersion basket 30 can be firmly connected with the cylindrical welded scattered ring 27. At the same time, the conical dispersion basket 30 has a rectangular basket groove on the basket body to disperse the butadiene liquid and the inhibitor mixture fluid for auxiliary mixing.

[0057] The inner tube wall of the primary tube 24 above the loose ring 27 and the outer tube wall of the conical top reduction tube 26 are provided with threads for mutual rotation, and a cross bar is welded in the straight tube cavity of the conical top reduction tube 26;

[0058] By adopting the above preferred technical solution, the conical top shrink tube 26 can be screwed and installed in the initial pipe 24, and there is a cross bar at the conical top shrink tube 26 that can be held by hand, which facilitates the screwing operation of the conical top shrink tube 26 in the initial pipe 24.

[0059] It should be noted that the present invention is a butadiene vaporization device. The present invention provides a cross-flow mixing tube mechanism 3, a venturi mixing tube mechanism 4 and a split-swirl mixing tube mechanism 5 between a water bath vaporizer 1 for butadiene vaporization and a static mixer. The initial pipe 24 of the split-swirl mixing tube mechanism 5 is matched with a flange connection plate 25 and a rubber gasket 13. Bolts and nuts can be used to flange-connect the liquid outlet pipe of the static mixer. Then, the initial pipe 24 is welded to the conical contraction tube 18 of the venturi mixing tube mechanism 4 for interconnection. At the same time, the rotary pipe 15 of the venturi mixing tube mechanism 4 can be screwed and installed. In the upper cone guide pipe 7, a rubber gasket 13 can be pressed between the flange base plate 6 of the upper cone guide pipe 7 and the flange plate of the pipe body of the liquid inlet pipe 2. Then, the flange base plate 6, the rubber gasket 13 and the flange plate of the pipe body of the liquid inlet pipe 2 can pass through the bolts, and the nuts are screwed together at the bolts to realize the connection of the upper cone guide pipe 7 to the liquid inlet pipe 2. The corrosion-resistant airbag block 11 at the upper cone guide pipe 7 passes through the upper cone guide pipe 7 with the help of the through-tube 12 and is connected to the external compressed gas supply equipment through the air valve, so that the corrosion-resistant airbag block 11 can exhaust or intake air with the help of the two groups of pipe bodies of the through-tube 12;

[0060] The butadiene liquid and the polymerization inhibitor can be added to the static mixer connected above the split-swirl mixing tube mechanism 5 for initial mixing, and then the mixture of the butadiene liquid and the polymerization inhibitor can flow downward along the primary pipe 24. The butadiene liquid and the polymerization inhibitor mixture are first collected by the conical top-contracting tube 26 in the primary pipe 24, and then the butadiene liquid and the polymerization inhibitor mixture are dispersed in a basket-like manner at the conical dispersion basket 30 and the dispersion ring 27. Then, the spiral disk flow element 29 forms a disk flow for further mixing the butadiene liquid and the polymerization inhibitor mixture.

[0061] Then, the mixture of the butadiene liquid and the polymerization inhibitor can flow downward into the Venturi mixing tube mechanism 4. The conical diffuser 16, the throat connecting tube 17 and the conical contraction tube 18 at the Venturi tube mechanism 4 form a Venturi structure. According to the Venturi effect, the flow velocity of the fluid increases and the pressure decreases when passing through the throat connecting tube 17, so that the polymerization inhibitor and the butadiene liquid mixture can be fully mixed. The spiral guide member 19 in the throat connecting tube 17 can make the polymerization inhibitor and butadiene liquid mixture form a spiral flow, further enhancing the mixing effect. The throat connecting tube 17 has a round head inlet box 20 extending into the tube. The vibration motor 23 in the round head inlet box 20 can be connected to electricity for vibration, so that the polymerization inhibitor and butadiene liquid mixture in the throat connecting tube 17 can generate a vibrating flow, thereby promoting the polymerization of the butadiene liquid and the polymerization inhibitor, and making the mixing more uniform.

[0062] Then, the mixture fluid of the polymerization inhibitor and the butadiene liquid can flow downward from the venturi mixing tube mechanism 4 into the cross-flow mixing tube mechanism 3. After the mixture fluid of the butadiene liquid and the polymerization inhibitor enters the upper cone guide tube 7, the mixture of the butadiene liquid and the polymerization inhibitor can flow downward along the high dislocation plate 10, the medium dislocation plate 9 and the low dislocation plate 8 in a circuitous manner, and the corrosion-resistant airbag blocks 11 of the low dislocation plate 8 and the medium dislocation plate 9 can be controlled to bulge and expand, changing the height difference between the low dislocation plate 8 and the medium dislocation plate 9, thereby improving the circuitous flow effect of the butadiene liquid and the polymerization inhibitor mixture, and further improving the mixing effect of the butadiene liquid and the polymerization inhibitor mixture. The well-mixed butadiene liquid and polymerization inhibitor mixture fluid can enter the water bath vaporizer 1 for vaporization treatment;

[0063] The principle of the water bath vaporizer 1 for butadiene vaporization is based on indirect heat exchange and phase change control: hot water (60-90°C) in the shell side transfers heat to the liquid butadiene in the tube side through finned tubes or spirally grooved tubes, causing it to heat up to the boiling point under the operating pressure (e.g., about 25°C at 0.5 MPa), absorb the latent heat of vaporization (about 389 kJ / kg) and convert into the gas phase. The design ensures stable vaporization through hot water constant temperature control (±1°C) and superheat adjustment (outlet temperature is 5-10°C higher than the boiling point). The vaporized butadiene can be normally connected to external storage equipment or processing and utilization equipment for connection and use. After the water bath vaporizer 1 is shut down, the bolts and nuts of the initial connection pipe 24 and the static mixer can be disassembled, and the flange base plate 6 can be disassembled from the liquid inlet pipe 2. Then the screw-on tube 15 can be disassembled from the upper cone guide pipe 7. If the corrosion-resistant air bag block 11 at the middle dislocation plate 9 and the high dislocation plate 10 is damaged, the cross-flow mixing pipe mechanism 3 can be directly replaced. If the corrosion-resistant air bag block 11 is not damaged, the upper cone guide pipe 7 can be cleaned. By holding the cross bar at the conical top reduction pipe 26, the conical top reduction pipe 26 can be rotated in reverse, so that the conical top reduction pipe 26 can be screwed upward out of the initial connection pipe 24 for cleaning and maintenance. At this time, the conical dispersion basket 30 can be taken out upward for cleaning, maintenance or replacement.

[0064] It should be noted that the present invention is a butadiene vaporization device, and the components in the present invention are all components known to those skilled in the art, and the structures and principles thereof are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0065] The basic principles, main features, and advantages of the present invention are shown and described above. 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 illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to 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 butadiene vaporization device, comprising a water bath vaporizer, wherein a liquid inlet pipe for butadiene liquid to enter is fixed to the top of the tank of the water bath vaporizer, characterized in that: The invention also includes a cross-flow mixing tube mechanism, a Venturi mixing tube mechanism and a vortex mixing tube mechanism. The top of the liquid inlet pipe is interconnected with the cross-flow mixing tube mechanism for circuitous mixing of butadiene liquid and polymerization inhibitor, and the upper part of the cross-flow mixing tube mechanism is interconnected with the Venturi mixing tube mechanism for vibration flow polymerization of butadiene liquid and polymerization inhibitor. The upper part of the Venturi mixing tube mechanism is welded with a vortex mixing tube mechanism for connecting to an external static mixer for basket-disk flow polymerization of butadiene liquid and polymerization inhibitor. The cross-flow mixing pipe mechanism includes an upper cone guide pipe, a low dislocation plate, a middle dislocation plate, a high dislocation plate, a corrosion-resistant airbag block and a through-tube. A flange base plate is welded on the outer tube body of the bottom end of the upper cone guide pipe, and the flange base plate is connected to the flange of the pipe body of the liquid inlet pipe. The low dislocation plate, the middle dislocation plate and the high dislocation plate are welded in a staggered and distributed manner from bottom to top in the conical tube cavity of the upper cone guide pipe. The upper plate surfaces of the low dislocation plate and the middle dislocation plate are bonded and supported with a corrosion-resistant airbag block for expansion and lifting, and the two ends of the corrosion-resistant airbag block are interconnected and fixed with a through-tube for passing through the upper cone guide pipe for ventilation. The top end of the upper cone guide tube is screwed on to the top end of the venturi mixing tube mechanism, and the venturi mixing tube mechanism includes a screw-on tube, a conical diffuser, a throat connecting tube, a conical shrinking tube, a spiral flow guide, a round head inlet box and a vibration motor. The screw-on tube is welded in the lower tube opening of the conical diffuser, and the upper shrinking tube opening of the conical diffuser is welded to the lower shrinking tube opening of the conical shrinking tube through the throat connecting tube. A round head inlet box for convex and conical shrinking of the tube body is inserted into the tube body of the throat connecting tube, and a vibration motor is installed in the round head inlet box. An L-shaped hook guide groove is symmetrically provided on the vertical wall of the box cavity on one side of the round head entry box, and an L-shaped hook guide strip welded on the side of the side connecting plate is clamped in the L-shaped hook guide groove. A round head supporting plate for pressing into the round head entry box is welded under the plate body of the side connecting plate, and a vibration motor is locked on the surface of the round head supporting plate by a bolt. A plate hole for inward insertion of a bolt is provided between the box body of the round head entry box where the throat connecting pipe is exposed and the side connecting plate, and the bolt passes through the bolt body of the side connecting plate and is screwed with a nut; The conical shrinkage tube above the throat connecting pipe is welded to the primary connecting pipe of the split-vortex mixing pipe mechanism, and the split-vortex mixing pipe mechanism includes the primary connecting pipe, a conical top shrinkage tube, a bulk ring, a support ring, a spiral disk flow piece and a conical dispersion basket. A flange connection plate is welded at the top pipe mouth of the primary connecting pipe away from the throat connecting pipe, and a rubber gasket is pressed on the surface of the flange connection plate. A support ring and a spiral disk flow piece are welded in sequence from top to bottom in the primary connecting pipe below the flange connection plate. A bulk ring is supported on the surface of the support ring, and a conical dispersion basket is installed inside the bulk ring. A conical top shrinkage tube is screwed and installed in the primary connecting pipe above the bulk ring.

2. A butadiene vaporization device according to claim 1, characterized in that: A rubber gasket is pressed between the flange base plate below the upper cone guide pipe and the liquid inlet pipe, and a sheet hole is opened on the surface of the rubber gasket and is vertically interconnected with the hole position on the surface of the flange base plate.

3. A butadiene vaporization device according to claim 2, characterized in that: The conical tube body of the upper cone guide tube is symmetrically provided with through holes, and a through tube is inserted into the through hole and extends out, and the through tube is bonded and fixed to the hole wall of the through hole.

4. A butadiene vaporization device according to claim 3, characterized in that: A tray is welded to the inner ring wall of the scattered ring through a sharp connecting plate, and a conical dispersion basket is supported on the surface of the tray. The lower part of the basket body of the conical dispersion basket is welded in the scattered ring through a cylinder, and a rectangular basket groove is opened on the tapered surface of the basket body of the conical dispersion basket. The ring body diameter of the scattered ring is smaller than the diameter of the lumen of the initial pipe.

5. The butadiene vaporization device according to claim 4, characterized in that: The inner tube wall of the initial tube above the loose ring and the outer tube wall of the conical top reduction tube are provided with threads for mutual rotation, and a cross bar is welded in the straight tube cavity of the conical top reduction tube.

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