TWI296939B - Polymer solution prhehater and method for preheating such solutions - Google Patents

Description

1296939 V. INSTRUCTIONS (1) [References in relevant applications] In accordance with the provisions of Title 35(Π)(e) of the United States Code, this application was filed on March 21, 2000 at 〇6/19〇 99, the priority of the month, the priority of the drought request, the technical disclosure of the application: the second patent application method is incorporated into the case. The invention relates to the processing of a polymer solution, θ = retention time and low pressure drop to preheat the polymer / solution; - ^ %, the compound is subjected to the final vacuum Prior to devolatilization, the solution is processed in a wide range of processing equipment and methods. 4 Injury and skill knowing the situation The polymer solution of the self-polymerization reactor in the kiln is heated by vacuum de-kneading. The preheater is well known in the art: ::: Features such as multi-tube heat Switch (bribery)

Si sacrifices no content (mixed elements). However, Γ, etc.: most of the sacred sacs are in the polymer solution of the Buddha, causing the flow to be unresolved. The large casing diameter and the thick wall cause the cost to increase, because only the fixed heating zone is excessive in the conditioned condition. Heating ς ^ Fixation thermal expansion, as well as during the maintenance and cleaning process, the use of preheating devices including specially designed and directly mounted ampules. European Patent No. 0 352 727 bi ‘Discover ΐϊ i, :::: This: i is very expensive and requires considerable retention. Extended processing conditions often result in product degradation. Many custom-fitted

Page 7 1296939 V. Inventions (2) There are also problems with excessive pressure drop. In addition, a heat exchanger such as that disclosed in U.S. Patent No. 4,314,606 (SMR Reactor) is a polymer reactor or cooler. The standard SMR design has a large liquid hold-up and therefore requires a long hold time. Due to the typical SMR arrangement, the operating fluid flow must be low in order to maintain the pressure drop of the operating fluid to an acceptable limit. If the standard SMR was used as a polymer devolatilization preheater, the residence time is usually 5 to 20 minutes, which detracts from the quality of the polymer. SUMMARY OF THE INVENTION The present invention provides a preheater and a temperature concept for a conventional device and a hollow space. A long straight upper end of the present invention is attached, and the bundle of the present invention. The tubular configuration is formed by the main shaft of the chamber along a single, lower heat chamber in the heated preheater bundle. The addition of a method of polymerization, distribution, principle, container, end, and end of the adjacent chamber further includes the devolatilization problem of the compound to define the equipment and the flow rate instability to improve the identification One of the two ends is provided with an abutment and is provided in a heating method. In particular, the present invention minimizes cost, pressure drop, and retention. The compound devolatilization preheater includes a heating chamber that is disposed with a longitudinal axis extending therebetween. The bulk polymer/solvent solution is fed to a molten polymer outlet. At least one heating tube in the chamber: at least a branch-shaped coiled heating tube, the heating tube: extending in a transverse direction of the longitudinal axis: /, capacity: Λ is set to be in the polymer / cold 剤 gt The path of the liquid inlet extends to the polymer

Page 8 1296939 V. INSTRUCTIONS (3) ί ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ In accordance with the present invention, the curved portions, the plurality of curved tubes, and preferably the plurality of flat surfaces are preferably arranged such that they are disposed on a common plane, the outer space being configured in a shape that is substantially parallel. The heat pipe of each heating pipe: the shape of the t-spindle ^==direction = appears - the parallel to the essence and the addition of the quality, the m $ of the: even: the pipe can be set to the cross-section of the real axis of each other ^ extend. And being configured to form a tube bundle toward the heating tube may include at least - a girder + self adjacent adjoining flat & P ϋ ..., the heating tubes may be provided on each wall::: = ::: 'The heating tubes each have a twisting through each of the heating tubes = port 1 These heating tubes are arranged such that the heating medium outlets are adjacent: anti-i:: and a heating tube on an abutting plane The heated medium is heated to σ W. Thus, the heating tubes such as the lateral abutments are introduced. The force medium of the ... can flow in the opposite direction. The orientation can be set such that it ii'4 = above the tube bundle. The e.g. tube bundle is attached to the long tube of the other tube bundle: the spindle of the η 2 tube is relatively offset by an angle. The main axis of ...e and the longitudinal axis of the heating chamber are in accordance with the invention, but preferably the squares and associated heating chambers have preheaters and may also comprise external inventions. ...to the top, there is a feed distributor to

The invention further comprises a polymer/solvent solution which is introduced into the upper portion of the upper tube bundle evenly in a polymer/solvent solution, which is introduced into 1296939, and the invention (4), and/or includes a discharge distribution which is not at the lower end of the heating chamber. Device. The discharge distributor preferably includes a plurality of orifices for dividing the molten polymer into a plurality of strands as it exits the heating chamber to increase the surface area of the molten polymer, thereby elevating the polymer in a vacuum devolatilization chamber The effect of removing the solvent. The method of preheating the devolatilization chamber before it. The method can include the steps of: introducing a polymer/solvent solution into the preheater via the inlet of the polymer/solvent solution preheater; letting the solution flow down the rail:: outside the coiled heating tube Surface contact, • Refill the solution to recover a heated molten plastic. According to the heat and devolatilization method, a prepolymerization solution of the polymer/solvent solution is provided: a polymerization m solution is passed down through the inlet of the polymer/solvent solution preheater.埶考士为〜 'Shou 涊 涊 preheater, let the face contact, according to the 51r 7 to 'and the shape of the heating tube with the long shape and will have been added = and at least partially devolatilized polymer; The outlet and the in--devolatilized polymer are passed through the melt-polymerization devolatilization chamber prior to the volatilization chamber. The molten polymer is preferably surfaced on the surface to be introduced, and a plurality of other strands are added to increase the polymer. [The drawing is simple: the effect of the volcanic operation of the month. Figure 1 is a schematic view of a portion of a fish shield that implements the present invention, wherein a specific Figure 2 is a polymer/solvent solution preheater of Figure 2, and is not preheated; a top view of the plan, some of which

1296939

A section showing the preheater and related processing of the method of the present invention: an enlarged schematic view of a long coiled 埶 埶 埶 4 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; /r is a schematic perspective view of another preheater in which the polymer/solvent is introduced from the bottom and the molten polymer is removed from the top. [Detailed Description of the Preferred Embodiment]

The one shown in FIG. 1 is a concrete realization of the principle and concept of the present invention, and generally refers to a polymer devolatilization preheater indicated by reference numeral 10. The preheater 10 includes an elongated vertical hollow container i 2 having a substantially rectangular cross-sectional shape and a heating chamber preheater 10 having a substantially rectangular cross-sectional shape in the heating chamber 14 The upper end is provided with a polymer/solvent solution inlet 16 and at the lower end of the heating chamber 14 a molten polymer outlet 1 (see Fig. 3). As shown, the container 12 and the heating chamber 14 share a longitudinal axis 24 extending between the ends 18, 22. The preheater 10 further includes a plurality of longitudinally arranged heating tube bundles 26, 28 and 30 mounted within the heating chamber 14. Although in the illustrated embodiment, a plurality of types of operators are provided, it will be understood by those skilled in the art that the actual number can range from one to five or more, depending on the needs of the particular application. The bundles 26, 28 and 30 are substantially identical except for the orientations described later. Therefore, for convenience, only the tube bundle 26 will be described herein. Tube bundle 26 includes a plurality of elongate spiral heating tubes 32 and 34. These heating tubes 1296939 ---------- - V, invention description (6) ' ' 3 2 and 3 4 ^ " ′ X are explained in the same orientation, which is essentially the same. Therefore, this Only the heating tube 3 2 will be described in detail. As can be seen from Fig. 4, the heating tube 32 is composed of a curved or U-shaped tube portion 36 and a plurality of elongated and substantially straight lines as shown in the figure. The connecting portion 38 is connected to the connecting portion 38. The official portions 36, 38 are arranged to provide a generally rectangular shape to the heating tube 32 and have a longitudinal axis 24 (see Fig. 1). The transverse direction extends across the major axis 40 of the heating chamber 14. The generally rectangular outer space configuration of the heating tube 32 presents a pair of opposing edges 42, 44 which are preferred relative to the main axis 40 of the heating tube 32. Each of them is set to be substantially parallel. Referring to Fig. 4, it can be seen that the connecting tube portions 38 are elongated and arranged to extend substantially parallel to each other in the transverse direction of the main shaft 4〇. As shown, the curved portion 36 and the connecting tube portion 38 of each heating tube 32 are preferably all disposed on a common plane. As can be seen from FIG. 1, these The common plane to which the dry heating tubes 32, 34 each belong is arranged to be substantially parallel to the longitudinal axis 24. This is for the respective planes of the heating tubes 32, 34 which respectively constitute the tube bundles 26, 28 and 30 of the preheater 1〇, That is to say, in particular, please refer to Fig. 2, from which it can be seen that the heating tubes 32 of each tube bundle 2, 28 and 30 are arranged/arranged in a plane adjoining a parallel plane containing the heating tube 34. On, and vice versa.

As previously described, the heating tubes 32 and 34 are identical except for the individual orientations. That is, the heating tubes 32 and 34 each have a cooked medium inlet 46 and a heating medium outlet 48 that pass through the walls 50, 52 of the container 12, respectively. The heating tubes 32 and 34 are arranged such that the heating medium population 46 of one of the heating tubes is adjacent to the heating medium outlet 48 of the heating tube on the second and second sides, and vice versa, so as to

Page 12 1296939

The heating medium introduced into the heating medium inlet 46 of the hot head 32 can flow through the associated tube bundle in the opposite direction to the heating medium introduced into the heating medium inlet 46 of heating = 34, and vice versa. Anyone familiar with this skill can create appropriate identities to match the fluid flow from left to right and front to back, and from right to left and back to front, in order to allow the temperature profile of the cross section of the preheater. Minimized to a minimum. Referring to Figure 1, it can be seen that the position of the heating tubes 32, 34 in the heating chamber 14 is such that the polymer/solvent flowing into the container 经由2 via the inlet 丨6 is dissolved and flows down through the heating chamber 14. And transferring heat when the polymer/solvent solution flows along a path as indicated by the head 50, that is, in contact with the outer surfaces 3 2 a, 3 4 a of the heating tubes 3 2, 34, which path is substantially Extending along the longitudinal axis 24 from the polymer/solvent solution inlet 16 toward the polymer outlet 2 〇. As can be seen from Figure 1, the bundles 26, 28 and 3 are sequentially arranged along the longitudinal axis 24 and are arranged to maintain a top-bottom relationship with each other. These tube bundles are also oriented such that the major axis 40 of the elongate spiral heating tubes 32, 34 of the tube bundle 28 is offset from the longitudinal axis 24 by the major axis of the elongate spiral heating tubes 32, 34 of the tube bundles 26 and 30. With this configuration, it is easy to separately control the flow and temperature on the use side. That is, each of the tube bundles 26, 28, and 30 can be provided with a separately controlled flow of heating medium. By dividing the preheater into individual heating kits, a flow rate of less than 3 bar can be used to control the flow rate and flow path of the fluid used. The preheater is suitably provided with a feed distributor 52 at the upper end 18 of the heating chamber 14 to evenly distribute the polymer/solvent solution flowing through the upper portion 5 of the tube bundle 26. In order to ensure good distribution, the dispenser can be in the shape of an orifice plate.

Page 13 1296939 V. INSTRUCTIONS (8) '$' and at least have the same pressure drop as the heater bundle. This feature is especially useful if, by heating, the combination of reduced 'plus solvent ablation' may result in uneven distribution of the flow within the heater. Preheating 10 Further, a discharge distributor 56 (see Fig. 3) may be provided at the lower end 2 of the heating chamber 丨4. The discharge distributor 56 desirably includes a plurality of orifices 58 for exiting the heating chamber 14 from the molten polymer and falling into a vacuum devolatilization chamber 62 located in the preheater 1 (shown in Figure 3). At this time, the molten polymer can be divided into a plurality of strands of 6 turns. In order to stabilize the operation, the dispenser 56 preferably provides a pressure drop of up to about 2 bar.

5毫米以下。 Below the outer diameter of the heating tube 32, 34 is preferably below 13. 5 mm. Typically, an 8 mra heating tube can be used for large vessels up to 5 mm in diameter or less. The heating tube is conveniently configured such that the distance between the edges 42 and 44 is in the range of about 1 〇 3 to 300 mm. As previously mentioned, the heating tubes 3, 3 4 extend from one side of the heating chamber 14 to the other side, and ideally no backflow (r e t u r η ) is provided to keep the pressure drop on the operating side below 4 bar. This low pressure drop, when combined with the residence time of the polymer in the heating chamber for less than one minute, tends to achieve a sudden boiling effect early during heating, which is also the production of high quality polymerizations having a ruthenium molecular weight distribution and no degradation. An important factor confirmed by the practical experience of the object.

The aforementioned preheater is designed to operate in a downward flow direction. However, since the released vapor tends to rise, it is preferable in some cases to cause the polymer/solvent solution to flow upward. At that time, the molten polymer can be removed from the heating chamber from the side via a nozzle or the like introduced into the vacuum devolatilization chamber mounted on the upper side of the vessel. The configuration shown in Figure 5 is the configuration in which the preheater is

1296939 V. INSTRUCTIONS (9) ~---- According to the number 11 〇, the polymer/solvent inlet is indicated by reference numeral 丨丨2, the molten polymer outlet is indicated by reference numeral 114, and the hair loss chamber is = reference numeral 11 6 said. As another arrangement, the preheater of the present invention can be installed in a vacuum devolatilization chamber. At that time, the preheater should be equipped with a vapor release aid. As described above, the damper 12 is rectangular, but a square is preferable. As is known to those skilled in the art, the heating tube bundle and the railing tube of the present invention can also be mounted in a circular casing. At that time, individual coiled heating tubes of different lengths may be required depending on the circular shape to fill the entire cross-section. In this case, if necessary, the flow through the (four) heating pipe can be controlled by the hole σ of the heating pipe to control the production speed of each of the heating pipes themselves. The operation of the preheater of the present invention will now be described with reference to FIG. In Fig. j, the tube bundles 26, 28 and 3, the operating fluid inlet 46 and the helium acting fluid outlet 48 are shown in a schematic manner. In operation, a polymer/solvent solution containing about 20,000 to 30,000 ounces of styrene polymer per hour in a hexane solvent solution is used at a temperature of about 12 generations. The preheater is introduced via the inlet 16 at a pressure of about 6 to 8 bar. Preferably, the solution contains about 55 weight percent solids by weight. The cross section of the body flowing through the bundles 26, 28 and 30 is about 15 square meters; The pressure drop across the upper distributor 52 may be from about 3 to about 5 bar, and the total pressure drop across the tube bundles 26, 28, and 30 may be about 2 bar. The force is suitably maintained below 0.1 bar. The fluid for the operation of the hot oil can be introduced into the mouth at a pressure of about 33 Torr, a temperature of about 3 bar, and a flow rate of about 120 gpm.

1296939 V. INSTRUCTIONS (10) The residence time of the polymer solution in the heating chamber 14 may be about 35 seconds, and the polymer strand 60 leaving the heating chamber 14 and entering the quenching chamber 62 may be at 1 8 5 °. The temperature around c and has about 9 6% solids. Broadly speaking, the present invention can be used in the devolatilization of any polymer which is soluble in a solution. For example, styrene propylene, polyphenylene, olefin, and polyethylene can all be devolatilized using the principles and concepts of the present invention. The home and other organic solvents can be used as a solvent. The polymer/solvent solution fed may contain from about 5% to about 8% solids by weight, may have a viscosity of up to 100 Pa s, a temperature of from about 120 to 160 ° C, and 000 stone per hour. The flow rate of the side polymer solids. The polymer ' leaving the preheater of the present invention may have from about 15 Torr to about 28 Torr after boiling. (: temperature, and viscosity of about 1 to 5000 Pa S. The operating fluid can be, for example, hot water or steam at a temperature of about 200 to 350 ° C. The retention of the polymer in the preheating chamber The time can be more than 2 minutes ^ % ΐ丄 but less than about 5 〇 seconds. The total pressure drop of the entire preheater is only J weeks and below 5 bar. Removal = 2 The present invention, the polymer / solvent solution may have Conditionally processed: = two unreacted monomers and low molecular weight polymer, resulting in both polymerization degradation and degradation are minimized. L diagram 7L part description] Preheater 10 capacity 3| ^ 12 16 Ends

Inlet Heated tube bundle 22 28 18 Vertical axis 24 Heated tube bundle 30 Heated chamber 14 Outlet 2 0 Heated tube bundle 26 Heated tube 32

1296939

Page 17 V. INSTRUCTIONS (11) Outer surface 32a Heating tube 34 Outer surface 34a Elbow portion 36 Connecting tube portion 38 Spindle 40 Edge 42 Edge 44 Inlet 46 Out σ 48 Wall 50 Wall 52 Feed distributor 52 Upper 54 Out Material distributor 56 orifice 58 strand 60 devolatilization chamber 62 preheater 110 inlet 112 outlet 114 devolatilization chamber 116

Claims (1)

Apply [.1, the compound devolatilization preheater, - J - the ancient τ Wang Valley ^, according to which a heating chamber is defined, the heating Φ § 乂 another '1 ]» jydi, mountain two & _ An anger, a lower end, and a longitudinal axis extending between the two ends, and each of the ones is provided with a polymer/solvent/tank inlet at the upper, adjacent, and adjacent to the lower end of the heating chamber Providing a molten polymer outlet; and a heating tube bundle in the heating chamber of the eve, ν», and the tube bundle is provided with at least one elongated coil heating tube, the heating tube is configured to have a strip The transverse axis extends across the major axis of the heating chamber, and the heating tube is positioned to pass the polymer/solvent solution along a path extending along the longitudinal axis from the polymer/solvent solution. When flowing to the polymer outlet, the heat is contacted by contacting the outer surface of the heating tube, and the heating tube further includes a plurality of curved portions and a plurality of connecting tubes that are in contact with the curved portions. 2. The polymer devolatilization preheater of claim 1, wherein the elbow portions are disposed on a common plane. 3. The polymer devolatilization preheater of claim 1, wherein the connecting tube portions are disposed on a common plane. 4. Polymer devolatilization preheating as described in claim 2 No., the link between the official departments of the Yuzhong Huji is arranged on the common plane. 5' The polymeric devolatilization preheater of claim 4, wherein the common planar system is disposed substantially parallel to the longitudinal axis. ""f. The polymer devolatilization preheater of claim 1, wherein the configuration is substantially rectangular, exhibiting a pair of opposite edges of the substantial and major axes. Keep flat W Page 18 1296939 6. Patent Application Scope 7. The polymer devolatilization preheater of claim 4, wherein the configuration is substantially rectangular in shape, exhibiting a pair of opposing edges that are substantially parallel to the major axis. 8. The polymer devolatilization preheater of claim 7, wherein the connecting tube portions are disposed substantially parallel to each other. The polymer devolatilization preheater of claim 7, wherein the connecting tube portion is elongated and is disposed to extend in a transverse direction of the main shaft. The polymer devolatilization preheater of claim 5, wherein the configuration is substantially rectangular in shape, exhibiting a pair of opposing edges that are substantially parallel to the major axis. The polymer devolatilization preheater of claim 10, wherein the connecting tube portions are disposed substantially parallel to each other. The polymer devolatilization preheater according to the first aspect of the invention, wherein the connecting pipe portion is elongated and is arranged to extend in a transverse direction of the main shaft. The polymer devolatilization preheater of claim 4, wherein the tube bundle comprises at least two heating tubes, and the heating tubes are disposed on respective parallel planes. 14 as claimed in claim 1 The polymer devolatilization preheater according to the item, wherein the heating pipes of the households respectively have two heating ports and an outlet respectively passing through the wall surface of the container, and the heating pipes are arranged to allow one of the heating pipes to be ^The same is true for the heating medium outlet of the heating medium and the heating medium of the heating tube on the adjacent plane, so as to be introduced into the heating medium inlet of the heating tubes. 1296939 VI. Scope of application for patents 'The heating medium can flow through the heating tubes in the opposite direction. The polymer devolatilization preheater according to claim 1, wherein at least two tube bundles are disposed in the heating chamber, wherein one tube bundle is tied above the other tube bundle, and the orientation of the tube bundles is The main axis of at least one of the elongate spiral heating tubes, which is configured to allow one of the bundles, is offset from the longitudinal axis by an angle with respect to at least one of the elongated coils of the other tube bundle. The polymer devolatilization pre-conditioner of claim 1, wherein the container and the associated heating chamber have a rectangular cross-sectional configuration. 17. The upper end of the second heat chamber of the polymer devolatilization preheating according to claim 1 is provided with a feed distributor for distributing the polymer/solvent solution of the 々丨L over the bundle. . The polymer devolatilization preheater package described in the application of the product of the application of the scope of the product is provided with a discharge distributor, and the discharge distribution is divided into a plurality of lines. When the molten polymer leaves the heating chamber, the first two kinds of prepolymers/heater solutions can be introduced into the preheater; External "contact, according to the long-shaped hover heating: melt dimerization: the material outlet retracts a heated molten plastic. · / u / solvent solution preheating and devolatilization method, its package 1296939 6. Applying for a patent stipulations' - including: pre-heating the solution/polymer solution described in a polymerization item or introducing 1 liter of the solution into the preheater via the application of the patented heater D; Contacting the outer surface, according to the heating chamber, and heating with a long coil to devolatilize; and, the solution is heated and at least a portion of the polymer will be heated and at least a portion of the compound is exported and enters the hair The polymer is transported through a molten poly 91, . , and a second devolatilization chamber. 21· As claimed in the second paragraph of the patent application, the +, * + polymer is introduced into the devolatilization method, wherein the molten strand is described. If it is first divided into a number of individual lines 22 - a kind of square skin that is preheated before the polymer / dissolution - the real line volatilization chamber will pass through the entrance of the heat exchanger as in the patent application range. The polymer/solvent solution described in the item is expected to be introduced into the preheater; f ^ A ^ « liter >;, L passes through the heating chamber and is in contact with the outer surface of the long spiral heating target. According to the heating of the solution; and 1 molten polymer outlet to recover a heated molten plastic. Included · A polymer / solvent solution preheating and devolatilization method, which is covered by the patent scope The polymer/solvent solution described in item 5 pre-,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The outer surface of the coil is heated to contact the substrate, whereby the solution is heated and at least a portion of the polymer is devolatilized in the patented range; and the character 5 and at least a portion of the devolatilized polymer are passed through Melting polyvacuum devolatization chamber The method of claim 23, wherein the molten strand is introduced into the devolatilization chamber before being divided into a plurality of individual lines A spring 25 sisters are planted in a polymer/solvent solution A method for preheating a light devolatilization chamber by first lighting, comprising: a polymer/solvent solution as described in claim 10, and a polymer/solvent solution Introducing the preheater; AL Ϊ / combined liquid flows down or rises through the heating chamber, and contacts the outer surface of the elongated coil heating heater to heat the solution; and reheats the melted polymer outlet to recover a heated a molten plastic. 26· A method for preheating and devolatilizing a polymer/solvent solution, which comprises: a polymer/solvent solution as described in the scope of claim [...] Introducing a polymer/solvent solution into the preheater; chopping the /column solution to a lower or rising flow through the heating chamber and contacting the surface of the elongate spiral heating to heat the solution and at least partially remove the polymer Volatilize; and will be heated and at least partially devolatilized The polymer is conveyed through the molten polymer outlet and into a vacuum devolatilization chamber. The method of claim 26, wherein the molten polymer is first introduced before being introduced into the devolatilization chamber. Divided into many individual lines Page 22 1296939 VI. Application for patent coverage. 2 8. A polymer devolatilization preheater comprising: an elongated vertical hollow vessel defining a heating crucible, the loading chamber having an upper end, a lower end, and an extension between the ends The longitudinal axis, 'the container is provided with a polymer/solvent solution inlet at one end and a molten polymer outlet at the other end; and a heating tube bundle disposed at least in the heating chamber, the tube bundle is provided At least one elongated coiled heating tube, the heating tube being configured to have a major axis extending transversely across the heating chamber in a transverse direction, while the heating is positioned to be in a polymer/solvent solution Flowing from the polymer/solvent solution inlet to the polymer along a path extending substantially along the longitudinal axis, "the outer surface of the heating tube contacts and transfers heat, and the heating tube further includes a right dry portion and a number of a connecting tube portion that is in contact with the elbow portion. 29. The polycondenser solution according to claim 28 of the patent application is located at the outlet of the fused polymer at the heating end and is located on the heating chamber. Before you start. The hot-polymerized compound 1 solution is introduced into a vacuum devolatilization chamber as described in item 28 of the vacuum devolatilization chamber, and includes, by the solvent solution according to the scope of the patent application (two) two-solution solution preheater The inlet will be a polymer/chamber, and with an elongated shape; let the solution fall or rise through the heating heat; and contact with the outer surface of the molten agglomerate 'according to the addition of 3 to the solution. Molten plastics. • Preheating and devolatilization methods for polymer/solvent solutions. 1296939 6. The scope of application for patents includes: introducing a polymer/solvent solution into the preheater via the inlet of the polymer/solvent solution preheater as described in claim 28, and letting the solution descend or rise. Passing through the heating chamber and contacting the outer surface of the elongated spiral heating tube, thereby heating the solution and at least partially devolatilizing the polymer; and conducting the heated and at least partially devolatilized polymer through the melt polymerization The product exits and enters a vacuum devolatilization chamber. Page 24