CN211158629U - Sustainable membrane type desorption volatile device that gives heat - Google Patents
Sustainable membrane type desorption volatile device that gives heat Download PDFInfo
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- CN211158629U CN211158629U CN201921833495.0U CN201921833495U CN211158629U CN 211158629 U CN211158629 U CN 211158629U CN 201921833495 U CN201921833495 U CN 201921833495U CN 211158629 U CN211158629 U CN 211158629U
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Abstract
The utility model belongs to the technical field of chemical equipment, in particular to a membrane type devolatilization device capable of continuously supplying heat, which comprises a cylinder body, a heat medium distributor, a falling film pipe fixing plate, a material distributor, a falling film pipe supporting plate, a falling film pipe, a heat medium inlet, a heat medium outlet, a polymer inlet and a polymer outlet; a plurality of layers of devolatilization plates which are obliquely arranged are arranged below the membrane falling tube supporting plate; the section of thick bamboo wall lower extreme of barrel still is equipped with gaseous phase export, devolatilizes board heat medium import and devolatilizes board heat medium export, and the devolatilization board is inside all to be equipped with the heat medium passageway, and devolatilizing board heat medium import, heat medium passageway and devolatilizing board heat medium export communicate in proper order. This device enables polymer steady devolatilization temperature and good mobility, and the material still can be devolatilized at the board department of devolatilizing when falling liquid film pipe department is devolatilized to guarantee that the material gets rid of the volatile component completely, devolatilizing is efficient.
Description
Technical Field
The utility model relates to a chemical industry equipment field especially relates to a sustainable diaphragm type desorption volatility device that gives heat.
Background
In the polymer or macromolecule industry, due to the kinetic and thermodynamic limitations of the polymerization reaction, there is a partial residue of monomers in the polymer product, and the presence of these monomers can seriously affect the performance of the product. In order to improve the properties of this part of the product, it is necessary to remove these monomers. In addition, a solution polymerization process adopted in a part of polymerization processes of the polymer needs to remove the solvent in the polymer with high efficiency after the solution polymerization is completed, so as to avoid the residual solvent in the polymer. Since most of the solvent remaining from the unreacted monomer in the polymer is volatile substances, it is necessary to remove the volatile substances from the polymer, and this process is generally called a devolatilization process.
The polymer devolatilization process is an indispensable key link in the polymer production field, and is ubiquitous from polyolefin to polyester. Devolatilization of polymers is a separation process that removes volatile components from the polymer in the melt phase. After the polymerization reaction is completed, volatile components must be removed in time after the polymerization is completed. The temperature for removing the volatile components is generally relatively high, between 50 and 380 ℃ and is related to the physical properties of the polymer to be devolatilized, the devolatilization pressure varies greatly and can be carried out at a pressure of a few pascals absolute to a few tens of bars absolute, depending mainly on the physical properties of the volatile substances contained in the polymer and on the requirements of the polymer product itself.
During devolatilization, the separation between the polymer component and the volatile component is based on the difference in volatility of the two under the same conditions, driven by the difference in chemical potential of the two. The chemical potential of volatile species in a polymer is a function of the temperature, concentration and pressure of the device in a particular phase, and the driving force for mass transfer can be enhanced by increasing the temperature of the polymer and decreasing the partial pressure of the species to diffuse it from the polymer phase to the gas phase.
At present, most of devolatilization of polymers adopts falling-strip flash devolatilization, spray devolatilization or extruder devolatilization, falling-strip flash devolatilization and spray devolatilization, and during the devolatilization process, due to evaporation of volatile components, the temperature of materials is reduced, the fluidity is reduced, and the method is not suitable for polymer systems with higher monomer content. The devolatilization of the extruder has low devolatilization efficiency, large equipment investment and high operating cost, and the devolatilization process of a polymer system with high monomer content is difficult to meet.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a membrane-type devolatilization device capable of continuously providing heat, which is used for solving the problems of high viscosity of the melt or polymer in the devolatilization process, such as the temperature drop of the melt due to volatilization of the volatile substances, the viscosity increase, the flowability deterioration, the polymer flowing in the devolatilization device being unable, the equipment being blocked, the devolatilization efficiency being low, etc.
In order to achieve the above and other related objects, the present invention provides a membrane type devolatilization device capable of continuously supplying heat, comprising a cylinder, wherein a heat medium distributor, a falling membrane tube fixing plate and a material distributor are sequentially arranged in the cylinder from top to bottom, a plurality of vertically arranged falling membrane tubes and heat medium tubes are arranged in the cylinder, the falling membrane tubes are sleeved on the heat medium tubes, openings are arranged at the upper ends of the falling membrane tubes, the lower ends of the falling membrane tubes are closed, and openings are arranged at the upper ends and the lower ends of the heat medium tubes; the upper ends of the film falling pipe and the heating medium pipe are fixedly arranged on the film falling pipe fixing plate, the lower end of the film falling pipe penetrates through the material distributor, and the material distributor is positioned at the upper end of the film falling pipe; a heat medium inlet is formed in the top of the cylinder body and communicated with the heat medium pipe; a heat medium outlet and a polymer inlet are formed in the upper end of the cylinder wall of the cylinder body, the position of the heat medium outlet is higher than the top end of the falling film pipe, the heat medium outlet is communicated with the falling film pipe, and the position of the polymer inlet is located between the falling film pipe fixing plate and the material distributor; the bottom of the cylinder body is provided with a polymer outlet communicated with the polymer inlet; a plurality of layers of devolatilization plates which are obliquely arranged are arranged below the falling film tube supporting plate, and the devolatilization plates are arranged in a staggered mode along the vertical direction; the lower end of the cylinder wall of the cylinder body is provided with a gas phase outlet, a devolatilization plate heat medium inlet and a devolatilization plate heat medium outlet, and the position of the gas phase outlet is higher than that of the top devolatilization plate; the inside heat medium passageway that all is equipped with of devolatilization board, devolatilization board heat medium import, heat medium passageway and devolatilization board heat medium export communicate in proper order.
The working principle of the basic scheme is as follows: the heat medium enters the heat medium distributor from the heat medium inlet, enters the heat medium pipe, flows into the falling film pipe from the lower end of the heat medium pipe, then flows from the inside of the falling film pipe from bottom to top, and finally flows out from the heat medium outlet at the upper end of the cylinder; the polymer or viscous solution containing volatile components enters the material distributor from the polymer inlet, the material distributor uniformly distributes materials on the outer wall of the falling film pipe, so that the materials uniformly flow on the outer wall of the falling film pipe from top to bottom in a falling film mode under the action of gravity and then continuously flow downwards in a film shape along the devolatilization plate, the materials exchange heat with the falling film pipe in the flowing process, the devolatilization components are volatilized, the volatile.
Further, the number of the devolatilization plates is 1-20, and the distance between the devolatilization plates is 100-800 mm.
Furthermore, the included angle between the devolatilization plate and the horizontal direction is 10-80 degrees. The specific angle of the devolatilizer plate may be adjusted for different polymer properties.
Further, the inside falling liquid film pipe backup pad that is located the material distributor and takes off between the board that still is provided with of barrel, falling liquid film pipe backup pad is located the lower extreme department that falls the membrane pipe, is equipped with the through-hole of a plurality of positions and falling liquid film pipe one-to-one in the falling liquid film pipe backup pad, and the lower extreme that falls the membrane pipe passes the through-hole. In addition to the connections necessary for support strength,of support plates for the falling film tubesThe non-perforated area is provided with a large-area hollowed-out design, so that high-viscosity fluid and volatile gas-phase components can smoothly pass through the non-perforated areaFalling film tube supporting plate. Falling liquid film pipe backup pad mainly plays to support limiting displacement to falling liquid film pipe, avoids the device in transportation, hoist and mount, use etc. and because of rocking and lead to falling liquid film pipe to take place radial movement, the lower extreme that falls the membrane pipe simultaneously is the free end, does not fix in falling liquid film pipe backup pad, and the falling membrane pipe of being convenient for freely stretches out and draws back to eliminate the influence of the stress that the in-process arouses by expend with heat and contract with cold of devolatilizing.
Further, the through hole in the falling film tube supporting plate is larger than the outer diameter of the falling film tube. The falling film tube is allowed to move radially by a small amount, and meanwhile, materials can smoothly pass through the falling film tube support plate without any influence on the flowing of the materials.
Further, a baffle is arranged inside the cylinder body, and the baffle is obliquely arranged at the gas phase outlet. The arrangement of the baffle can avoid the polymer from entering a gas phase outlet to cause the blockage of a pipeline.
Further, the gas phase outlet is connected with a condenser for condensing, collecting and removing the volatile components.
Further, the condenser can be connected with a vacuum device, the vacuum device comprises a trap and a vacuum pump, and the trap is a spray trap or a cooling trap.
Furthermore, a plurality of fixing elements are arranged between the heat medium pipe and the falling film pipe so as to avoid the vibration and the shock of the heat medium pipe.
Further, the fixed component includes that a plurality of level sets up and along the backup pad of heat medium pipe circumference equipartition, and the one end fixed connection of backup pad is on the outer wall of heat medium pipe, and the other end of backup pad contacts with the inner wall that falls the membrane pipe. The supporting plate adopts single-side welding, so that the falling film pipe has a certain moving space while the vibration and the shock of the heat medium pipe are avoided.
Furthermore, the quantity of fixed component is three, and three fixed component interval evenly distributed sets up along vertical direction in proper order.
Further, falling liquid film pipe fixed plate and barrel inner wall sealing connection, falling liquid film pipe fixed plate are bilayer structure, and the upper end fixed connection of heat medium pipe falls the upper strata of membrane pipe fixed plate, falls the upper end fixed connection of membrane pipe in the lower floor of falling liquid film pipe fixed plate. The space in the middle of two fixed plates is the passageway of heat medium circulation, and the enclosed construction of double-deck fixed plate can avoid heat medium and material mixture and pollute the material, the flow of the heat medium of being convenient for simultaneously.
As mentioned above, the utility model discloses a sustainable membrane type desorption volatility device that gives heat has following beneficial effect:
1. when adopting this device to devolatilize, high viscosity fuse-element or polymer are along falling the film pipe outer wall from last to flowing down the film form in the barrel, in the flow, accomplish the desorption of volatile component, it can incessant heat transfer to carry out with the polymer to fall the film pipe, make the polymer can maintain stable devolatilization temperature, keep good mobility, avoid because the flash distillation of volatile component, lead to the polymer temperature to descend and the material mobility that arouses descends, the solidification, thereby block up the devolatilization device, and then solve the problem because the material mobility that volatile component flash distillation or volatilization lead to becomes poor, avoid the volatile component solidification and block up the devolatilization device. Meanwhile, the materials flow in a film shape in the devolatilization device, and have large specific surface area and long residence time, which is beneficial to the removal of the volatile components of the polymer.
2. The utility model discloses in, the material still can take off and wave plate department further taking off when falling liquid film pipe department takes off and waves to guarantee that the material gets rid of the volatile component completely, effectively improve simultaneously and take off and wave efficiency.
3. Since in conventional devolatilization processes the material needs to be kept in a superheated state before entering the devolatilization device in order to have enough heat in the devolatilization device to supply the endothermic heat of volatilization of the volatile components, the polymer temperature in the superheated state will be very high, which is very disadvantageous for heat-sensitive substances. The inside of the devolatilization device can carry out continuous heat exchange, thereby avoiding the overheating state of the polymer and being beneficial to reducing the thermal degradation of the thermosensitive polymer.
To sum up, the utility model provides a devolatilization device has very big operating flexibility, is particularly useful for heat-sensitive polymer and the very big polymer of monomer content or solvent content. The device not only can be used independently, but also can be used by two sets or a plurality of sets of devices in series, and the device can play the effect until the final requirement is reached.
Drawings
Fig. 1 is a longitudinal cross-sectional view of an apparatus according to an embodiment of the present invention;
fig. 2 is a top view of the support plate of the falling film reactor of fig. 1.
Fig. 3 is a transverse cross-sectional view of the descender tube of fig. 1.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated. The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Description of reference numerals:
the device comprises a heating medium inlet 1, a heating medium distributor 2, a heating medium outlet 3, a material distributor 4, a falling film pipe 5, a heating medium pipe 6, a cylinder 7, a falling film pipe fixing plate 8, a falling film pipe supporting plate 9, a through hole 91, a gas phase outlet 10, a gas phase port baffle 11, a devolatilization plate heating medium outlet 12, a devolatilization plate 13, a polymer outlet 14, a devolatilization plate heating medium inlet 15, a polymer inlet 16 and a supporting plate 17.
As shown in fig. 1, a membrane type devolatilization device capable of continuously supplying heat comprises a cylinder body 7, wherein a heat medium distributor 2, a falling membrane tube fixing plate 8, a material distributor 4 and a falling membrane tube supporting plate 9 are sequentially arranged in the cylinder body 7 from top to bottom, a plurality of vertically arranged falling membrane tubes 5 and heat medium tubes 6 are arranged in the cylinder body 7, the falling membrane tubes 5 are sleeved on the heat medium tubes 6, the upper ends of the falling membrane tubes 5 are provided with openings, the lower ends of the falling membrane tubes 5 are closed, and the upper ends and the lower ends of the heat medium tubes 6 are provided with openings; the upper ends of the film falling pipe 5 and the heating medium pipe 6 are fixedly arranged on a film falling pipe fixing plate 8, the lower end of the film falling pipe 5 sequentially penetrates through a material distributor 4 and a film falling pipe supporting plate 9, the material distributor 4 is positioned at the upper end of the film falling pipe 5, and the film falling pipe supporting plate 9 is positioned at the lower end of the film falling pipe 5; the top of the cylinder 7 is provided with a heat medium inlet 1, and the heat medium inlet 1 is communicated with a heat medium pipe 6; a heating medium outlet 3 and a polymer inlet 16 are arranged at the upper end of the cylinder wall of the cylinder body 7, the position of the heating medium outlet 3 is higher than the top end of the falling film pipe 5, the heating medium outlet 3 is communicated with the falling film pipe 5, and the position of the polymer inlet 16 is between the falling film pipe fixing plate 8 and the material distributor 4; the bottom of the cylinder 7 is provided with a polymer outlet 14 communicated with a polymer inlet 16; a plurality of layers of devolatilization plates 13 which are obliquely arranged are arranged below the falling film tube supporting plate 9, and the devolatilization plates 13 are arranged in a staggered manner along the vertical direction; the lower end of the cylinder wall of the cylinder body 7 is provided with a gas phase outlet 10, a devolatilization plate heat medium inlet 15 and a devolatilization plate heat medium outlet 12, and the position of the gas phase outlet 10 is higher than that of the uppermost devolatilization plate 13; the inside of the devolatilization plate 13 is provided with a heat medium channel, and the devolatilization plate heat medium inlet 15, the heat medium channel and the devolatilization plate heat medium outlet 12 are communicated in sequence.
The barrel 7 provides a suitable environment for devolatilization of the materials, including inert gas flow, suitable devolatilization pressure, and the like, and simultaneously plays a role in supporting the whole equipment.
The heat medium inlet 1 is a passage for the heat medium to enter the device and is used for providing a proper devolatilization temperature for the devolatilization device. The heat medium outlet 3 is an outlet of the heat medium and returns to the heat medium system for circulation in the next cycle.
A polymer inlet 16, which is the passage for the polymer to be treated to enter the devolatilizer. The polymer outlet 14 is the passage through which the devolatilized material exits the devolatilizer.
The heat medium distributor 2 is located below the heat medium inlet 1, after the heat medium enters the cylinder 7, the heat medium distributor 2 ensures that the heat medium is uniformly distributed between each film falling pipe 5 and each heat medium pipe 6, the structure form of the heat medium distributor is a horizontal round stainless steel plate with holes, and the edge of the horizontal round stainless steel plate is welded with a circle of vertical stainless steel plate with holes.
The material distributor 4 is an external falling film distributor which uniformly distributes the polymer on the outer wall of the falling film pipe 5, so that the polymer uniformly flows outside the falling film pipe 5 in a falling film mode under the action of gravity. The outer falling film device needs to bear certain pressure, and the polymer is uniformly distributed outside the falling film pipe 5 through the pressure under the action of the delivery pump.
The falling film pipe 5 is a falling film devolatilization area, a heat medium on the inner side of the falling film pipe 5 flows from bottom to top to form a stable temperature gradient, the temperature gradually rises from top to bottom, and a material on the outer side of the falling film pipe 5 flows from top to bottom. In the devolatilization process of the polymer, the temperature of the polymer is reduced along with the volatilization of volatile components, and the heat can be quickly supplemented to the initial temperature by the falling film tube 5, so that the temperature fluctuation of the polymer in the devolatilization process is extremely small, and the stability of the devolatilization operation is ensured.
The heat medium pipe 6 is arranged inside the falling film pipe 5 and plays a role in guiding and conveying the heat medium. Three fixing elements are arranged between the heat medium pipe 6 and the falling film pipe 5 so as to avoid the vibration and the shock of the heat medium pipe 6. Referring to fig. 3, the fixing element is composed of three supporting plates 17 which are horizontally arranged and uniformly distributed along the circumferential direction of the heat medium pipe 6, the supporting plates 17 are stainless steel plates and are arranged at intervals of 120 degrees along the circumferential direction of the heat medium pipe 6, the supporting plates 17 are welded on a single surface, that is, one end of each supporting plate 17 is fixedly connected to the outer wall of the heat medium pipe 6, and the other end of each supporting plate 17 is in contact with the inner wall of the falling film pipe 5. The fixing member can further prevent the heat medium pipe 6 from being shaken and shaken.
Falling liquid film pipe fixed plate 8 is bilayer structure, and the upper end welding of heat medium pipe 6 falls the upper strata of membrane pipe fixed plate 8, and the upper end welding of falling liquid film pipe 5 falls the lower floor of membrane pipe fixed plate 8, and falls liquid film pipe fixed plate 8 and 7 inner wall sealing connection of barrel, and the space in the middle of two fixed plates is the passageway of heat medium circulation, and the enclosed construction of bilayer fixed plate can avoid heat medium and material mixture and contaminated material, the flow of the heat medium of being convenient for simultaneously.
Referring to fig. 2, the falling film tube supporting plate 9 is a porous structure, a plurality of through holes 91 are formed in the falling film tube supporting plate 9, the through holes 91 are in one-to-one correspondence with the falling film tubes 5, the lower ends of the falling film tubes 5 penetrate through the through holes 91, and the through holes 91 are larger than the outer diameters of the falling film tubes 5; except for the necessary connection of the supporting strength of the falling film tube supporting plate 9, the non-perforated area of the falling film tube supporting plate 9 is provided with a large-area hollow design, so that high-viscosity fluid and volatile gas-phase components can smoothly pass through the falling film tube supporting plate. Falling film tube backup pad 9 mainly plays to support limiting displacement to falling film tube 5, and avoiding device is in transportation, hoist and mount, use etc. and because of rocking and lead to falling film tube 5 to take place radial movement, and the lower extreme that falls film tube 5 simultaneously is the free end, does not fix on falling film tube backup pad 9, and it is flexible freely to be convenient for fall film tube 5 to eliminate the influence of the stress that the in-process arouses by expend with heat and contract with cold of devolatilizing. The through hole 91 on the falling film tube supporting plate 9 is larger than the outer diameter of the falling film tube 5, so that the falling film tube 5 is allowed to move in a small amount in the radial direction, and meanwhile, the materials can smoothly pass through the falling film tube supporting plate 9 without any influence on the flowing of the materials.
The gas phase outlet 10, which provides a passage for the removed volatile components out of the cylinder 7, can be a vacuum, a slight positive pressure and a positive pressure, which can range from a few pascals to a few tens of bars, depending on the characteristics of the polymer and of the volatile substances. In addition, the gas phase outlet 10 is connected to a condenser for condensing and collecting the removed volatile components. Specifically, the condenser can link to each other with vacuum apparatus, vacuum apparatus includes trap and vacuum pump, the trap is for spraying trap or cooling trap, and vacuum apparatus and condenser cooperation can fully condense the collection with volatile component.
The inside of the cylinder 7 is provided with a baffle which is obliquely arranged at the gas phase outlet 10. The baffle is arranged to prevent the polymer from entering the gas phase outlet 10 and causing the blockage of the pipeline.
And the devolatilization plate heat medium inlet 15 is a passage for the heat medium in the devolatilization plate 13 to enter the devolatilization plate 13. The devolatilization plate heat medium outlet 12 is an outlet of the heat medium inside the devolatilization plate 13.
The devolatilization plate 13 is a place where the material enters the bottom of the devolatilization device for further devolatilization, a heat medium channel is arranged inside the devolatilization plate 13, and the material can be further heated in the devolatilization plate 13. The material flows on the devolatilization plate 13 in the form of a thin film, has a large specific surface area, and can further separate volatile components in the polymer. Specifically, the included angle between the devolatilization plate 13 and the horizontal direction is 10-80 degrees, and the size of the specific angle can be adjusted and designed according to different polymer properties; the number of the devolatilization plates 13 is 1-20, and the distance between the devolatilization plates 13 is 100-800 mm.
The specific use process of the device is as follows:
the heat medium enters the heat medium distributor 2 from the heat medium inlet 1, enters the heat medium pipe 6, flows into the falling film pipe 5 from the lower end of the heat medium pipe 6, then flows from the bottom to the top from the inner side of the falling film pipe 5, and finally flows out from the heat medium outlet 3 at the upper end of the cylinder 7; the polymer or viscous solution containing volatile components enters the material distributor 4 from the polymer inlet 16 at a certain temperature, and the material distributor 4 uniformly distributes materials on the outer wall of the falling film pipe 5, so that the materials uniformly flow from top to bottom on the outer wall of the falling film pipe 5 in a falling film mode under the action of gravity; in the flowing process of the materials, because the pressure in the cylinder 7 is lower than the pressure of the materials entering the devolatilization device, when the polymers enter the devolatilization device, partial flash evaporation is firstly carried out, the materials after flash evaporation flow into a film shape on the outer wall of the falling film pipe 5, and simultaneously, the polymers exchange heat with the falling film pipe 5, so that the temperature of the polymers is kept stable and controllable. The polymer flows on the outer wall of the falling film pipe 5, and simultaneously carries out nucleation, diffusion and escape processes, thereby increasing the specific surface area of polymer devolatilization and ensuring that the polymer has enough time to complete the mass transfer of the devolatilization process in a devolatilization device. Materials with volatile components not completely removed in the falling film tube 5 can further enter the lower devolatilization plate 13 for further devolatilization; while the devolatilized component flows out of the barrel 7 in the form of a gas phase from a gas phase outlet 10, and finally the devolatilized material flows out from a polymer outlet 14.
The utility model provides a take off and wave device has very big operation elasticity, is particularly useful for the very big polymer of heat sensitive polymer and monomer content or solvent content, when falling liquid film pipe 5 takes off and waves, still takes off and waves the operation in taking off and further accomplishing of 13 departments of waving board, and treatment effeciency is high. The device can be used independently, and two or more sets of devices can be connected in series for use until the final required devolatilization effect is achieved.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The membrane type volatile component removing device capable of supplying heat continuously is characterized by comprising a cylinder body, wherein a heat medium distributor, a falling membrane pipe fixing plate and a material distributor are sequentially arranged in the cylinder body from top to bottom, a plurality of vertically arranged falling membrane pipes and heat medium pipes are arranged in the cylinder body, the falling membrane pipes are sleeved on the heat medium pipes, openings are formed in the upper ends of the falling membrane pipes, the lower ends of the falling membrane pipes are closed, and openings are formed in the upper ends and the lower ends of the heat medium pipes; the upper ends of the film falling pipe and the heating medium pipe are fixedly arranged on the film falling pipe fixing plate, the lower end of the film falling pipe penetrates through the material distributor, and the material distributor is positioned at the upper end of the film falling pipe; a heat medium inlet is formed in the top of the cylinder body and communicated with the heat medium pipe; a heat medium outlet and a polymer inlet are formed in the upper end of the cylinder wall of the cylinder body, the position of the heat medium outlet is higher than the top end of the falling film pipe, the heat medium outlet is communicated with the falling film pipe, and the position of the polymer inlet is located between the falling film pipe fixing plate and the material distributor; the bottom of the cylinder body is provided with a polymer outlet communicated with the polymer inlet; a plurality of layers of devolatilization plates which are obliquely arranged are arranged below the membrane falling tube fixing plate, and the devolatilization plates are arranged in a staggered mode along the vertical direction; the lower end of the cylinder wall of the cylinder body is provided with a gas phase outlet, a devolatilization plate heat medium inlet and a devolatilization plate heat medium outlet, and the position of the gas phase outlet is higher than that of the top devolatilization plate; the inside heat medium passageway that all is equipped with of devolatilization board, devolatilization board heat medium import, heat medium passageway and devolatilization board heat medium export communicate in proper order.
2. The apparatus of claim 1, wherein: the number of the devolatilization plates is 1-20, and the distance between the devolatilization plates is 100-800 mm.
3. The apparatus of claim 2, wherein: the included angle between the devolatilization plate and the horizontal direction is 10-80 degrees.
4. The apparatus of claim 1, wherein: the barrel is inside still to be provided with and to be located the material distributor and take off the falling liquid film pipe backup pad between the board, falling the lower extreme department that the membrane pipe backup pad is located and falls the membrane pipe, falling the through-hole that is equipped with a plurality of positions and falling liquid film pipe one-to-one in the membrane pipe backup pad, the lower extreme that falls the membrane pipe passes the through-hole.
5. The apparatus of claim 4, wherein: the through hole on the falling film tube supporting plate is larger than the outer diameter of the falling film tube.
6. The apparatus of claim 1, wherein: the inside baffle that is equipped with of barrel, the baffle slope sets up in gaseous phase exit.
7. The apparatus of claim 1, wherein: the gas phase outlet is connected with a condenser for condensing, collecting and removing the volatile components.
8. The apparatus of claim 1, wherein: and a plurality of fixing elements are arranged between the heat medium pipe and the falling film pipe.
9. The apparatus of claim 8, wherein: the fixed component comprises a plurality of supporting plates which are horizontally arranged and uniformly distributed along the circumferential direction of the heat medium pipe, one end of each supporting plate is fixedly connected to the outer wall of the heat medium pipe, and the other end of each supporting plate is in contact with the inner wall of the film falling pipe.
10. The apparatus of claim 1, wherein: falling liquid film pipe fixed plate and barrel inner wall sealing connection, falling liquid film pipe fixed plate are bilayer structure, and the upper end fixed connection of heat medium pipe falls the upper strata of membrane pipe fixed plate, falls the upper end fixed connection of membrane pipe in the lower floor of falling liquid film pipe fixed plate.
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| CN201921833495.0U CN211158629U (en) | 2019-10-29 | 2019-10-29 | Sustainable membrane type desorption volatile device that gives heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652738A (en) * | 2019-10-29 | 2020-01-07 | 上海东庚化工技术有限公司 | Sustainable membrane type desorption volatile device that gives heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652738A (en) * | 2019-10-29 | 2020-01-07 | 上海东庚化工技术有限公司 | Sustainable membrane type desorption volatile device that gives heat |
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