WO2024037666A1 - Réacteur, dispositif de réaction et procédé de réaction - Google Patents

Réacteur, dispositif de réaction et procédé de réaction Download PDF

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Publication number
WO2024037666A1
WO2024037666A1 PCT/CN2023/124670 CN2023124670W WO2024037666A1 WO 2024037666 A1 WO2024037666 A1 WO 2024037666A1 CN 2023124670 W CN2023124670 W CN 2023124670W WO 2024037666 A1 WO2024037666 A1 WO 2024037666A1
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WIPO (PCT)
Prior art keywords
circulation
coil
medium
coils
reactor
Prior art date
Application number
PCT/CN2023/124670
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English (en)
Chinese (zh)
Inventor
张湖曦
王玉枫
李艳明
Original Assignee
中国石油化工股份有限公司
中石化上海工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202210983399.4A external-priority patent/CN117619288A/zh
Priority claimed from CN202211322918.9A external-priority patent/CN117942889A/xx
Application filed by 中国石油化工股份有限公司, 中石化上海工程有限公司 filed Critical 中国石油化工股份有限公司
Publication of WO2024037666A1 publication Critical patent/WO2024037666A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings

Definitions

  • the invention relates to the field of chemical industry, and specifically to a reactor, a reaction device and a reaction method.
  • the polymerization reactor is a key equipment in the continuous polymerization process. It is a plug flow reactor. It controls the reaction temperature by removing heat through an internal heat exchange coil to ensure precise process control and produce uniform and high-quality polymer products.
  • a conventional polymerization reactor mainly includes a shell 7, a knotted coil group 9 and a collection loop 8.
  • the knotted coil group 9 is composed of multiple heat exchange coils. Each heat exchange coil is wound into a sheet shape, multiple heat exchange coils are stacked together in parallel, and the collective ring pipe 8 is sandwiched between the upper and lower flanges 71 of the shell.
  • the polymer solution flows into the shell 7 from the polymer solution inlet located at the top of the shell, and flows out of the shell 7 from the polymer solution outlet located at the bottom of the shell.
  • the heat exchange medium enters the collecting loop 8 from the tube inlet 81, and passes through the collecting loop. 8 is distributed to each heat exchange coil for circulation, and then enters the collecting loop pipe 8 and flows out from the tube outlet 82.
  • This medium circulation method is used to adjust the precise control of the polymerization reaction temperature to achieve different conversion rates and obtain different grades of polymer products.
  • each heat exchange coil is welded to the collective ring in a parallel manner, and the total length of the heat exchange coil near the center of the reactor is different from that of the heat exchange coil located at the edge, resulting in Different resistance differences lead to uneven medium flow in the coil and inaccurate temperature control.
  • the diameter of the polymerization reactor is also increasing, the greater the difference in the total length of each sheet coil, the greater the flow non-uniformity, the temperature control effect becomes worse, and the reaction conversion rate decreases; at the same time, A large arcuate area will be formed on the two opposite sides of the cylindrical reactor wall. Since coils cannot be arranged in the arcuate area, heat removal cannot be achieved in this area, resulting in uneven temperature control in the reactor and adversely affecting product quality. affect.
  • the object of the present invention is to solve at least one of the problems existing in the above-mentioned conventional polymerization reactors.
  • a first aspect of the present invention provides a reactor, including:
  • a first collection plate and a second collection plate are arranged on both radial sides of the inner cavity to separate the inner cavity into sequentially arranged ones along the radial direction.
  • the circulation coil assembly is arranged in the reaction chamber, the circulation coil assembly has a medium inlet and a medium outlet,
  • the reactor shell is provided with a medium inlet connected to the first collection channel and a medium outlet connected to the second collection channel
  • the first collection plate is provided with a medium inlet connected to the first collection channel.
  • the first communication port between the channel and the medium inlet of the circulation coil assembly, and the second collection plate is provided with a second communication port that connects the second collection channel and the medium outlet of the circulation coil assembly.
  • the first collection plate and the second collection plate are respectively formed as arcuate plates extending along the axial direction of the inner cavity, and both are relative to the plane of the central axis of the inner cavity. Symmetrical setup.
  • the medium inlet of the reactor housing is provided corresponding to the upper part of the first collection channel, and the medium outlet of the reactor housing is provided corresponding to the upper part of the second collection channel, and the The first communication port is provided corresponding to the lower part of the first collection channel, and the second communication port is provided corresponding to the lower part of the second collection channel.
  • the circulating coil assembly includes a plurality of circulating coil groups connected in parallel, each of the circulating coil groups has a medium inlet and a medium outlet, and the first collection plate is provided with a plurality of A plurality of first communication ports corresponding one-to-one to the plurality of medium inlets of the circulation coil group, and the second collection plate is provided with a plurality of first communication ports corresponding one-to-one to the plurality of medium outlets of the circulation coil group. a second connecting port.
  • the media strokes between the plurality of circulating coil groups are approximately equal.
  • the circulation coil assembly includes a plurality of circulation coils, and the plurality of circulation coils are arranged at intervals along the radial direction of the inner cavity; the reaction chamber is formed by a center of the inner cavity.
  • the plane of the axis is divided into a first area close to the first collection plate and a second area close to the second collection plate.
  • the number of circulation coils located in the first area is related to the number of circulation coils located in the second area. The number of coils is consistent;
  • the medium inlet of the circulation coil located in the first area is connected to the first communication port through the inlet bottom winding, and the medium outlet of the circulation coil located in the second area is connected to the outlet bottom winding.
  • the second communication port is connected; along the direction from the first area to the second area, the circulation coil located in the first area and the circulation coil located in the second area are connected in sequence through the top winding pipe. ;
  • the two corresponding circulation coils located in the first area and the second area and the corresponding inlet bottom coil, outlet bottom coil and top coil together form the circulation coil group.
  • the circulation coil is generally in the shape of a square sheet, and both axial sides of each circulation coil are respectively disposed close to the inner wall of the reactor shell.
  • the circulation coil is parallel to the first collection plate and the second collection plate, and a plurality of the circulation coils are evenly spaced along the radial direction of the inner cavity to collect all the circulation coils. Divide the reaction chamber into equal parts.
  • the circulating coil assembly has at least one of the following arrangements:
  • Method 1 A plurality of the inlet bottoms are arranged in groups around the pipe at different heights on the horizontal plane.
  • Method 2 A plurality of outlet bottoms are arranged in groups around the pipe at different heights on the horizontal plane.
  • Method 3 A plurality of the top winding pipes are arranged in groups on horizontal planes of different heights.
  • a plurality of the inlet bottom coils are arranged in two groups at two horizontal planes with different heights, and the corresponding inlet bottom coils of adjacent circulation coils are located at different water levels.
  • Plane, the pipe around the bottom of the inlet is an L-shaped bent pipe;
  • a plurality of the outlet bottom coils are divided into two groups and are arranged on two horizontal planes with different heights.
  • the corresponding outlet bottom coils of adjacent circulation coils are located on different horizontal planes.
  • the outlet bottom coils are L-shaped. Bend pipe;
  • a plurality of the top winding pipes are divided into two groups and arranged on two horizontal planes with different heights, and the corresponding top winding pipes of adjacent circulating coils are located on different horizontal planes, and the top winding pipes are straight pipes;
  • the plurality of first communication openings are arranged in two groups on two horizontal planes with different heights, and the plurality of second communication openings are arranged in two groups on two horizontal planes with different heights.
  • the circulation coil is a serpentine tube, and the bending directions of two adjacent circulation coils are perpendicular to each other.
  • the circulation coil is a corrugated tube, and the waves of two adjacent circulation coils are arranged staggered with each other.
  • the bending angle ⁇ of the waves of the circulating coil ranges from 30° to 150°.
  • the reactor shell is provided with a reaction raw material inlet and a reaction product outlet that are connected to the reaction chamber, and the circulation coil assembly is provided between the reaction raw material inlet and the reaction product outlet. between.
  • a second aspect of the present invention provides a reaction device, including a medium circulation system and the above-mentioned reactor.
  • the medium circulation system includes a medium output pipeline and a medium recovery pipeline.
  • the medium output pipeline is connected with the reactor.
  • the medium inlet of the shell is connected, and the medium recovery pipeline is connected with the medium outlet of the reactor shell.
  • a third aspect of the present invention provides a reaction method, which reaction method includes reacting the reaction raw materials in the above-described reaction device, and at least part of the reaction time is performed in the presence of a cooling medium.
  • the reaction is a polymerization reaction.
  • the monomer employed in the polymerization reaction contains styrene.
  • the above technical solution of the present invention is formed by forming arcuate areas on both sides of the inner cavity of the reactor shell.
  • the collective channel for the circulation of heat exchange medium can not only remove heat from the arcuate area and avoid the local temperature increase caused by the inability of heat transfer when the polymer flows into the arcuate area, but also can save the installation of the collective loop in conventional polymerization reactors. , to achieve the simplification of the reactor structure and the maximization of the inner cavity volume.
  • the reactor of the present invention has uniform reactor temperature, good temperature control effect, high reaction conversion rate, and is not limited by the diameter of the reactor.
  • Figure 1 is a partial structural schematic diagram of a conventional polymerization reactor
  • Figure 2 is a cross-sectional view of the polymerization reactor A-A in Figure 1;
  • Figure 3 is a partial structural schematic diagram of the reactor of the present invention.
  • Figure 4 is a B-B cross-sectional view of the reactor in Figure 3;
  • Figure 5 is a C-C cross-sectional view of the reactor in Figure 3;
  • Figure 6 is a D-D cross-sectional view of the reactor in Figure 3;
  • Figure 7 is an E-E cross-sectional view of the reactor in Figure 3;
  • Figure 8 is an F-F cross-sectional view of the reactor in Figure 3;
  • Figure 9 is a G-G cross-sectional view of the reactor in Figure 3.
  • Figure 10 is a H-H cross-sectional view of the reactor in Figure 3;
  • Figure 11 is a schematic structural diagram of an embodiment of the circulating coil group in the present invention.
  • Figure 12 is a schematic structural diagram of another embodiment of the circulating coil group in the present invention.
  • Figure 13 is a partial schematic diagram of the circulation coil in Figure 12.
  • first”, “second” and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts.
  • “Vertical” is not vertical in the strict sense, but within the allowable error range.
  • “Parallel” is not parallel in the strict sense, but within the allowable error range.
  • Similar words such as “include” or “include” mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also covering other elements.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • connection or integral connection; it can be directly connected or indirectly connected through an intermediate medium.
  • specific meanings of the above terms in the present invention may be understood based on specific circumstances. When a specific component is described as being between a first component and a second component, there may or may not be an intervening component between the specific component and the first component or the second component.
  • a first aspect of the present invention provides a reactor, including a reactor shell 1, a first collecting plate 2, a second collecting plate 3 and a circulation coil assembly 4.
  • the reactor shell 1 defines a cylindrical inner cavity; the first collecting plate 2 and the second collecting plate 3 are arranged on both radial sides of the inner cavity to separate the inner cavity into radially arranged sequentially.
  • the reactor shell 1 is provided with a medium inlet connected to the first collection channel 11 and a medium outlet connected to the second collection channel 13.
  • the first collection plate 2 is provided with a medium inlet connected to the first collection channel 11 and the circulation coil. There is a first communication port 21 for the medium inlet of the assembly 4, and a second communication port 31 for connecting the second collection channel 13 and the medium outlet of the circulation coil assembly 4 is provided on the second collecting plate 3.
  • the edge of the first collecting plate 2 is connected to the inner wall of the reactor shell 1 , and the first collecting channel 11 is defined by the first collecting plate 2 and the inner wall of the reactor shell 1 .
  • the edge of the second collecting plate 3 is connected to the inner wall of the reactor shell 1 , and the second collecting channel 13 is defined by the second collecting plate 3 and the inner wall of the reactor shell 1 .
  • the first collection board 2 and the second collection board 3 The area in between forms the reaction chamber 12 .
  • the heat exchange medium When in use, the heat exchange medium enters the first collection channel 11 through the medium inlet on the reactor shell 1 and is distributed to the circulation coil assembly 4 through the first communication port 21. After circulating in the circulation coil assembly 4, it passes through the second The communication port 31 enters the second collection channel 13 and is finally discharged through the medium outlet on the reactor shell 1 .
  • the above technical solution of the present invention forms the arcuate areas on both sides of the inner cavity of the reactor shell 1 to form a collective channel for the circulation of heat exchange medium, which not only can realize the heat removal of the arcuate area, but also prevents the polymer from flowing into the arcuate area and being unable to transfer heat.
  • the resulting local temperature increase can eliminate the need for the collecting loop 8 in conventional polymerization reactors, thereby simplifying the reactor structure and maximizing the inner cavity volume.
  • the reactor of the present invention has uniform reactor temperature, good temperature control effect, high reaction conversion rate, and is not limited by the diameter of the reactor.
  • the first collecting plate 2 and the second collecting plate 3 can have any appropriate structure and arrangement as long as their separation function can be realized.
  • the first collection plate 2 and the second collection plate 3 are respectively formed as arcuate plates extending along the axial direction of the inner cavity of the reactor shell 1, and both They are arranged symmetrically with respect to the plane of the central axis of the inner cavity (see plane P shown in FIG. 4 ), which also means that the first collective channel 11 and the second collective channel 13 are symmetrically arranged.
  • the axial height of the first collection channel 11 and the second collection channel 13 is greater than the axial height of the circulation coil assembly 4 .
  • first collecting plate 2 and the second collecting plate 3 can be adjusted according to the diameter of the reactor shell 1 to define the arcuate area in the inner cavity of the reactor shell where the circulation coil cannot be arranged as the collecting channel. .
  • the medium inlet of the reactor housing 1 is provided corresponding to the upper part of the first collection channel 11, and the medium outlet of the reactor housing 1 is provided corresponding to the upper part of the second collection channel 13,
  • the first communication port 21 is provided corresponding to the lower part of the first collection channel 11
  • the second communication port 31 is provided corresponding to the lower part of the second collection channel 13 .
  • each medium inlet, The media outlet and connecting port can be positioned according to actual application needs.
  • the second communication port 31 and the medium outlet of the reactor housing 1 may be provided corresponding to the upper part of the second collection channel 13 .
  • the circulation coil assembly 4 can have any appropriate embodiment, for example, the knotted coil group 9 in a conventional polymerization reactor can be used.
  • the circulation coil assembly 4 includes a plurality of circulation coil groups connected in parallel, each circulation coil group has a medium inlet and a medium outlet, and the first collection plate 2 is provided with multiple media and multiple circulation coil groups. There are a plurality of first communication ports 21 corresponding to the inlets one by one.
  • the second collection plate 3 is provided with a plurality of second communication ports 31 corresponding one to one to the plurality of medium outlets of the plurality of circulation coil groups.
  • the plurality of circulation coils Media travel is approximately equal between groups. That is to say, the lengths of the flow channels of the heat exchange medium in the circulating coil group are roughly equal, so that the resistance difference is basically the same, the flow rate of the heat exchange medium is uniform, and the temperature control is accurate.
  • one implementation method given by the present invention is to make the lengths of the medium flow channels of multiple circulating coil groups equal or as far as possible. Reduce the length difference.
  • the circulation coil assembly 4 includes a plurality of circulation coils 41, which are arranged at intervals along the radial direction of the inner cavity; the reaction chamber 12 is divided by the plane of the central axis of the inner cavity (ie, plane P).
  • the number of circulation coils 41 located in the first area is consistent with the number of circulation coils 41 located in the second area.
  • the medium inlet of the circulation coil 41 located in the first area is connected to the first communication port 21 through the inlet bottom coil 42
  • the medium outlet of the circulation coil 41 located in the second area is connected to the second communication port through the outlet bottom coil 43.
  • Port 31 is connected.
  • the circulation coil 41 located in the first area and the circulation coil 41 located in the second area are connected in sequence through the top coil 44 (also That is, the circulating coil in the first area that is closer to the plane P is connected to the circulating coil in the second area that is farther away from the plane P).
  • the circulation coil 41 located in the first area and the The two corresponding circulation coils 41 in the two areas and the corresponding inlet bottom coil 42, outlet bottom coil 43 and top coil 44 together form a circulation coil group.
  • the inlet bottom coil 42, the outlet bottom coil 43 and the top coil 44 By connecting the longer circulation coil of the first area close to the plane P with the shorter circulation coil of the second area away from the plane P using the inlet bottom coil 42, the outlet bottom coil 43 and the top coil 44 , and correspondingly adjust the lengths of the inlet bottom coil 42, the outlet bottom coil 43, and the top coil 44, so that the total length of the circulating coil group can be approximately equal.
  • the circulating coil assembly 4 can have at least one of the following arrangements:
  • Method 1 Multiple inlet bottom winding pipes 42 are arranged in groups at different heights on the horizontal plane.
  • Method 2 Multiple outlet bottom winding pipes 43 are arranged in groups at different heights on the horizontal plane.
  • Method 3 Multiple top winding pipes 44 are arranged in groups on horizontal planes of different heights.
  • the plurality of inlet bottom coils 42 are divided into two groups and are arranged on two horizontal planes with different heights.
  • the corresponding inlet bottom coils 42 of adjacent circulation coils 41 are located on different horizontal planes.
  • the inlet bottom coils 42 are L-shaped elbow. As shown in Figures 5 and 6, adjacent inlet bottom winding pipes 42 are not on the same horizontal plane.
  • the plurality of outlet bottom coils 43 are divided into two groups and are arranged on two horizontal planes with different heights.
  • the corresponding outlet bottom coils 43 of adjacent circulation coils 41 are located on different horizontal planes.
  • the outlet bottom coils 43 are L-shaped elbow. As shown in Figures 5 and 6, adjacent outlet bottom winding pipes 43 are not on the same horizontal plane.
  • the plurality of top coils 44 are divided into two groups and arranged on two horizontal planes with different heights.
  • the corresponding top coils 44 of adjacent circulation coils 41 are located on different horizontal planes.
  • the top coils 44 are straight pipes. As shown in Figures 7 and 8, adjacent top coils 44 are not on the same horizontal plane.
  • the plurality of first communication openings 21 are arranged in two groups on two horizontal planes with different heights
  • the plurality of second communication openings 31 are arranged in two groups on two horizontal planes with different heights.
  • the position of the first communication port 21 corresponds to the position of the inlet bottom coil 42
  • the position of the second communication port 31 corresponds to the position of the outlet bottom coil 43 .
  • the circulation coil group may include one or more circulation coils, and top and/or bottom coils for connecting the circulation coils with the first communication port and the second communication port.
  • the inlet bottom coil 42 and the outlet bottom coil 43 are perpendicular to the sheet circulation coil 41 .
  • the circulation coil assembly 4 includes eight circulation coil groups, specifically sixteen circulation coils 41 , eight inlet bottom coils 42 , and eight outlet bottom coils. winding tube 43, and eight top winding tubes 44.
  • Each of the first area and the second area has eight circulation coils 41, eight inlet bottom coils 42 are located in the first area, and eight outlet bottom coils 43 are located in the second area.
  • the first collection plate 2 is provided with eight first communication openings 21
  • the second collection plate 3 is provided with eight second communication openings.
  • the eight circulating coils 41 in the first area are numbered 1a, 2a, 3a, 4a, 5a, 6a, 7a, 8a respectively from long to short (that is, from left to right as shown in Figure 4).
  • the eight circulating coils 41 in the second area are numbered 1b, 2b, 3b, 4b, 5b, 6b, 7b, and 8b respectively from long to short (that is, from right to left as shown in Figure 4).
  • Figures 5 and 6 show the numbers of the corresponding connected circulation coils of each inlet bottom coil and outlet bottom coil.
  • Figures 7 and 8 show the numbers of the corresponding connected circulating coils of each top coil. It is shown in Figures 9 and 10
  • connection method that is, the flow path of the heat exchange medium, taking one of the circulating coil groups as an example with reference to Figures 3-10.
  • the medium inlet of the reactor shell 1 ⁇ the first collection channel 11 ⁇ the first communication port 21 marked 1a ⁇ the inlet bottom coil 42 marked 1a ⁇ the circulation coil 41 marked 1a ⁇ the top coil 44 marked 1a ⁇ marked
  • the heat exchange medium is passed through the reactor shell 1
  • the mass inlet enters the first collection channel 11, is distributed to the inlet bottom coil 42 by the first communication port 21, and then enters two series-connected circulation coils. It first circulates in the circulation coil in the first area and reaches the coil.
  • the top of the tube enters the circulation coil in the second area through the top coil 44 and reaches the bottom of the coil. It flows through the corresponding outlet bottom coil 43, enters the second collection channel 13, and passes through the reactor shell 1.
  • Media outlet flows out.
  • connection methods of other circulating coil groups can be obtained by referring to the above examples and combining the corresponding numbers in the drawings, and will not be described again here.
  • the circulation coil 41 may have any appropriate structure.
  • the circulation coil 41 is generally in the shape of a square sheet.
  • both axial sides of each circulation coil 41 are disposed close to the inner wall of the reactor shell 1 respectively.
  • the upper and lower sides of each circulation coil 41 are disposed close to the inner wall of the reactor shell 1.
  • the upper and lower sides of multiple circulation coils 41 are in contact with the corresponding reactor shell 1. The spacing between the inner walls is consistent.
  • the circulation coil 41 is parallel to the first collection plate 2 and the second collection plate 3, and multiple circulation coils 41 are evenly spaced along the radial direction of the inner cavity to ensure Divide the reaction chamber into 12 equal parts. As shown in Figure 4, the circulation coil 41, the first collecting plate 2, and the second collecting plate 3 are all parallel to the plane P.
  • FIG 11 shows an embodiment of the circulation coil 41.
  • the circulation coil 41 is a serpentine tube, and the bending directions of two adjacent circulation coils 41 are perpendicular to each other.
  • FIG 12 shows another embodiment of the circulation coil 41.
  • the circulation coil 41 is a corrugated tube, and the waves of two adjacent circulation coils 41 are arranged staggered with each other.
  • the bending angle ⁇ of the waves of the circulating coil 41 is preferably 30° to 150°.
  • the reaction material When in use, the reaction material enters the reaction chamber 12 from the top of the reaction chamber 12, and the material flows downward along the outer wall of the circulation coil, exchanging heat with the heat exchange medium in the circulation coil.
  • the material flows into the interlaced wave-shaped
  • the material flows along the overlapping pipe to the outer wall of the adjacent pipe, thereby mixing with the material on the outer wall of the adjacent pipe.
  • the material is mixed multiple times to make the entire
  • the temperature of the cross-section material tends to be uniform, and it will flow out from the bottom of the reaction chamber after reaching the process requirements.
  • the present invention sets the circulating coil into a specific wave-shaped structure (that is, the coil is wound into a vertical wave shape), and arranges the full-section overlapping arrangement, thereby increasing the total length of the circulating coil group and improving the heat transfer effect. At the same time, the materials are fully back-mixed to improve the uniformity of the temperature of the entire cross-section.
  • the reactor shell 1 is provided with a reaction raw material inlet and a reaction product outlet connected to the reaction chamber 12 .
  • the circulation coil assembly 4 is arranged between the reaction raw material inlet and the reaction product outlet.
  • the reaction raw material inlet is located at the top of the reactor shell 1 and the reaction product outlet is located at the bottom of the reactor shell 1 .
  • the reactor of the present invention may also include an inlet nozzle 5 connected to the medium inlet of the reactor shell 1 and an outlet nozzle 6 connected to the medium outlet of the reactor shell 1 .
  • the reactor of the present invention has the following technical effects compared with conventional polymerization reactors:
  • the present invention reduces the length difference between the coils of the conventional polymerization reactor by combining the lengths of the circulation coils, that is, the longer circulation coils and the shorter circulation coils are connected in series, thereby reducing the replacement cost.
  • the resistance difference of the heat medium makes the heat exchange medium evenly distributed, avoiding the impact on the temperature difference control of the reactor due to uneven distribution of the heat exchange medium in the coil tube, and ensuring the quality of the product;
  • the present invention can eliminate the defect of no coil in the arcuate area, remove the reaction heat in time, and facilitate temperature control.
  • the reactor of the present invention has a simple structure, is not limited by the diameter of the reactor, and has strong adaptability.
  • the flow rate of the heat exchange medium (such as hot oil) in the parallel circulating coil group is relatively uniform, and the circulating coil can cover the entire reaction chamber 12. There is no coil-free zone, and the temperature is more uniformly controlled throughout the cavity.
  • the collection plate, circulation coil and winding pipe can be manufactured as a unit module respectively. After the manufacturing is completed, they are connected by welding, which is easy to install and has a wide application range.
  • the reactor of the present invention can be any reactor that requires uniform internal temperature control, such as a polymerization reactor for polymerization.
  • a second aspect of the present invention provides a reaction device, including a medium circulation system and the above-mentioned reactor,
  • the medium circulation system includes a medium output pipeline and a medium recovery pipeline.
  • the medium output pipeline is connected to the medium inlet of the reactor shell 1, and the medium recovery pipeline is connected to the media outlet of the reactor shell 1.
  • the medium output pipeline can be connected to the inlet pipe 5
  • the medium recovery pipeline can be connected to the outlet pipe 6 .
  • the heat exchange medium of the medium circulation system enters the first collection channel 11 through the medium output pipeline, and is distributed into each circulation coil group through the first collection plate 2.
  • the heat exchange medium flowing through each circulation coil group passes through the second collection plate 3 Enter the second collection channel 13, and then enter the medium recovery pipeline through the outlet pipe 6.
  • the medium mentioned above is a heat exchange medium, such as a cooling medium.
  • the medium circulation system may also include a circulation pump, which is disposed between the medium output pipeline and the medium recovery pipeline.
  • a third aspect of the present invention provides a reaction method, which reaction method includes reacting the reaction raw materials in the above-mentioned reaction device, and at least part of the reaction time is performed in the presence of a cooling medium.
  • the reaction described above is a polymerization reaction.
  • the monomer employed in the polymerization reaction contains styrene.
  • the invention also provides a polymerization reactor for uniform temperature control, including a shell (corresponding to the above-mentioned reactor shell 1), a manifold channel (corresponding to the above-mentioned first and second manifold channels 11, 13) and multiple groups of parallel Circulation coil group; the collecting pipe channel is arranged on the shell, and a collecting pipe inlet nozzle (corresponding to the above-mentioned inlet nozzle 5) is connected with the collecting pipe channel (i.e. the first collecting channel 11) on one side.
  • the outlet nozzle (corresponding to the above-mentioned outlet nozzle 6) is connected to the collection pipe channel (i.e.
  • the inlet and outlet of the circulating coil group are connected to the collection pipe channels on both sides respectively;
  • One set of coils includes an inlet bottom coil (corresponding to the above-mentioned inlet bottom coil 42), a circulation coil group and an outlet bottom coil.
  • One end of the circulation coil group is connected to the inlet bottom coil, and the The other end of the circulating coil group is connected with the outlet bottom coil.
  • the circulating coil set includes multiple sets of circulating coils connected in series, connected by top windings.
  • the circulating coil is in the shape of a sheet, with both sides of the long side close to the Said shell.
  • the housing is a tubular structure, and two plate structures are respectively fixed on the inner wall of the housing, and the collecting tube channel is surrounded on the opposite side of the inner wall of the housing.
  • the circulation coil is parallel to the plate structure.
  • the interior space of the housing between the two plate structures is equally divided by the circulating coil set.
  • the internal space of the housing between the two plate structures is divided into a first area and a second area by the plane of the central axis of the housing, and the first area is close to the manifold.
  • the inlet nozzle, the second area is close to the manifold outlet nozzle; the first circulation coil in the first area is far away from the manifold inlet nozzle and the first circulation coil in the second area is close to the manifold outlet nozzle.
  • the circulation coil is connected through the top winding pipe.
  • the second circulation coil in the first area far away from the manifold inlet nozzle and the second circulation coil in the second area close to the manifold outlet nozzle are connected through the top winding pipe. connected, and so on.
  • the inlet bottom pipes are arranged at different levels in batches.
  • the bottom of the outlet is at different levels around the pipe in batches.
  • the top coils are batched at different levels.
  • the invention also provides an internal heat exchange coil for improving material heat exchange efficiency and temperature uniformity, including: a shell (corresponding to the above-mentioned reactor shell 1), and a device polymer solution opened on the top of the shell.
  • a shell corresponding to the above-mentioned reactor shell 1
  • a device polymer solution opened on the top of the shell.
  • the second collection pipe channel (corresponding to the above-mentioned first collection channel 11) and the coil group (corresponding to the above-mentioned circulation coil assembly 4) provided inside the housing; wherein, the first side and the second Corresponding settings on the side.
  • the coil group includes a first coil (corresponding to the above-mentioned circulation coil 41) and a second coil (corresponding to the above-mentioned circulation coil 41), and the first coil and the third coil are The two coils are in the shape of intertwined waves.
  • a plurality of bending angles are provided in the middle portions of the first coiled tube and the second coiled tube.
  • the first coiled tubes and the second coiled tubes are arranged in a staggered and overlapping manner.
  • the bending angle is an angle of 30°-150°.
  • the outer top of the first manifold channel is provided with a manifold outlet nozzle (corresponding to the above-mentioned outlet nozzle 6), and the outer top of the second manifold channel is provided with a manifold inlet nozzle (corresponding to the above-mentioned outlet nozzle 6).
  • the above inlet takes over 5).
  • the manifold outlet pipe is connected with the output end of the coil group, and the manifold inlet pipe is connected with the input end of the coil group.
  • a circulation pump is connected to a pipeline between the manifold inlet pipe and the manifold outlet pipe.

Abstract

L'invention concerne un réacteur, un dispositif de réaction et un procédé de réaction. Le réacteur comprend un carter de réacteur (1), des première et seconde plaques de collecte, et un composant de bobine de circulation (4) ; une cavité interne cylindrique est formée dans le carter de réacteur (1) ; les première et seconde plaques de collecte sont disposées sur les deux côtés radiaux de la cavité interne pour diviser la cavité interne en un premier canal de collecte (11), une chambre de réaction (12) et un second canal de collecte (13) qui sont agencés en séquence le long de la direction radiale ; le composant de bobine de circulation (4) est disposé dans la chambre de réaction (12) et est pourvu d'une entrée de milieu et d'une sortie de milieu ; le carter de réacteur (1) est pourvu d'une entrée de milieu en communication avec le premier canal de collecte (11) et d'une sortie de milieu en communication avec le second canal de collecte (13) ; la première plaque de collecte (2) est pourvue d'un premier orifice de communication (21) permettant au premier canal de collecte (11) d'être en communication avec l'entrée de milieu du composant de bobine de circulation (4) ; et la seconde plaque de collecte (3) est pourvue d'un second orifice de communication (31) permettant au second canal de collecte (13) d'être en communication avec la sortie de milieu du composant de bobine de circulation (4). Le réacteur permet d'obtenir une régulation uniforme de la température du réacteur sans être limité par le diamètre dudit réacteur.
PCT/CN2023/124670 2022-08-16 2023-10-16 Réacteur, dispositif de réaction et procédé de réaction WO2024037666A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202210983399.4 2022-08-16
CN202210983399.4A CN117619288A (zh) 2022-08-16 2022-08-16 一种均匀控温用的聚合反应器
CN202211322918.9 2022-10-27
CN202211322918.9A CN117942889A (en) 2022-10-27 A built-in heat exchange coil for improving material heat exchange efficiency and temperature uniformity

Publications (1)

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WO2024037666A1 true WO2024037666A1 (fr) 2024-02-22

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1204552A (zh) * 1997-07-02 1999-01-13 菲利浦石油公司 反应器热交换系统
CN2680348Y (zh) * 2003-12-06 2005-02-23 杭州林达化工科技有限公司 内部换热催化反应器
US20050115699A1 (en) * 2002-01-21 2005-06-02 Thierry Nuris Coil for coolant circulation, method for making same and reactor comprising same
CN103360587A (zh) * 2013-06-17 2013-10-23 浙江理工大学 一种熔融缩聚反应方法及专用反应器和降膜元件
CN203816622U (zh) * 2014-04-14 2014-09-10 青岛伊科思技术工程有限公司 高分子聚合反应装置
CN205462258U (zh) * 2016-01-29 2016-08-17 扬州惠通化工技术有限公司 一种立式聚合反应器
CN212167420U (zh) * 2020-04-14 2020-12-18 广东寰球广业工程有限公司 提升换热效果的聚苯乙烯反应釜

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1204552A (zh) * 1997-07-02 1999-01-13 菲利浦石油公司 反应器热交换系统
US20050115699A1 (en) * 2002-01-21 2005-06-02 Thierry Nuris Coil for coolant circulation, method for making same and reactor comprising same
CN2680348Y (zh) * 2003-12-06 2005-02-23 杭州林达化工科技有限公司 内部换热催化反应器
CN103360587A (zh) * 2013-06-17 2013-10-23 浙江理工大学 一种熔融缩聚反应方法及专用反应器和降膜元件
CN203816622U (zh) * 2014-04-14 2014-09-10 青岛伊科思技术工程有限公司 高分子聚合反应装置
CN205462258U (zh) * 2016-01-29 2016-08-17 扬州惠通化工技术有限公司 一种立式聚合反应器
CN212167420U (zh) * 2020-04-14 2020-12-18 广东寰球广业工程有限公司 提升换热效果的聚苯乙烯反应釜

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