Material reactor and production line body

Abstract

The invention relates to the technical field of material reaction equipment, and discloses a material reactor and a production line body, the material reactor comprises a reactor shell and an annular pipe assembly, the reactor shell is provided with a plurality of reaction cavities, and the plurality of reaction cavities are communicated in series; a first feeding hole and a plurality of second feeding holes are formed in the reactor shell; the annular pipe assembly is arranged in the reactor shell, multiple parts of the annular pipe assembly are distributed in the multiple reaction cavities, the feeding end of the annular pipe assembly is communicated with the first feeding port, the discharging end of the annular pipe assembly is located in the source cavity, the source cavity is a reaction cavity located at one end of the multiple reaction cavities connected in series, and the multiple second feeding ports are communicated with the multiple reaction cavities respectively; and the energy consumption and the investment cost of material production can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of material reaction equipment, and in particular to a material reactor and a production line. Background Art

[0002] In the related art, during the production process of materials, some process steps undergo exothermic reactions, while other process steps undergo endothermic reactions. For example, the production process of glycidyl methacrylate includes an open-loop and closed-loop method. The open-loop reaction releases a large amount of heat, and based on the reaction requirements and safety risks, the reaction temperature needs to be controlled within a smaller range. The closed-loop reaction requires the absorption of a large amount of heat, and the reaction vessel needs to be heated.

[0003] However, traditional processes generally use warm water to transfer heat, resulting in a large amount of low-temperature waste heat being wasted during the transfer process, causing high production energy consumption and investment costs. Summary of the Invention

[0004] The present application provides a material reactor and production line that can reduce energy consumption and investment costs in material production.

[0005] On the one hand, the present application provides a material reactor, including a reactor shell and a ring tube assembly, and the specific scheme is as follows.

[0006] The reactor shell has multiple reaction chambers, and the multiple reaction chambers are connected in series; a first feed port and multiple second feed ports are provided on the reactor shell; a ring tube assembly is arranged in the reactor shell, and multiple parts of the ring tube assembly are distributed in the multiple reaction chambers, the feed end of the ring tube assembly is connected with the first feed port, and the discharge end of the ring tube assembly is located in the source chamber, the source chamber is the reaction chamber located at one end of the multiple reaction chambers connected in series, and the multiple second feed ports are respectively connected with the multiple reaction chambers.

[0007] Beneficial effect: By arranging the ring tube assembly in the reactor shell and distributing multiple parts of the ring tube assembly in multiple reaction chambers, the ring tube assembly injects exothermic reaction materials through the first feed port to carry out an exothermic reaction, generating a large amount of heat. The ring tube assembly directly provides heat for the endothermic reaction carried out in each reaction chamber, which can avoid the exothermic reaction being carried out in a container outside the reactor shell, and there is no need to transfer heat through a heat-conducting medium to heat the reaction materials in the reactor shell, thereby reducing equipment investment costs and reducing material reaction energy consumption.

[0008] In an optional embodiment, it further includes at least one first baffle and at least one second baffle, the first baffle and the second baffle are spaced apart in the reactor shell, the top of the first baffle is spaced apart from the inner top of the reactor shell, and a channel is provided at the bottom of the second baffle.

[0009] In an optional embodiment, a plurality of overflow notches are provided on the top of the first baffle; and / or a top of the second baffle is spaced apart from an inner top of the reactor shell, and a plurality of overflow notches are provided on the top of the second baffle.

[0010] In an optional embodiment, the annular tube assembly is arranged in a spiral descending shape in the reactor shell; and / or, the portion of the annular tube assembly close to the discharge end is arranged inclined downward, and the discharge end is close to the bottom of the reaction chamber.

[0011] In an optional embodiment, the annular tube assembly includes an annular tube body, an outer surface of the annular tube body is provided with spiral grooves; and an inner surface of the annular tube body is provided with spiral fins.

[0012] In an optional embodiment, the annular tube assembly further includes a flow limiting element, which is arranged on a portion of the annular tube body close to the discharge end; and / or, the annular tube assembly further includes a filter component, which is arranged on the discharge end.

[0013] In an optional embodiment, a plurality of stirring assemblies are further included, and the plurality of stirring assemblies are arranged on the reactor shell, and the stirring heads of the plurality of stirring assemblies are respectively located in the plurality of reaction chambers.

[0014] In an optional embodiment, it further includes a plurality of feed pipes, the first ends of the plurality of feed pipes are respectively connected to the plurality of second feed ports, and the second ends of the plurality of feed pipes are respectively located in the plurality of reaction chambers; wherein, in each of the reaction chambers, the second end of the feed pipe is located on the upper part of the stirring head.

[0015] In an optional embodiment, it further includes a discharge port, which is connected to the tail chamber, and the tail chamber is the reaction chamber located at one end of the multiple reaction chambers connected in series, away from the source chamber, and the height of the discharge port is the same as the top surface of the first baffle or the top surface of the second baffle that surrounds the tail chamber; and / or, the top of the reactor shell is provided with an air outlet, and the air outlet is used to be connected to the material recovery equipment; and / or, the bottom of the reactor shell is provided with at least one drain port at both sides of the first baffle; and / or, the outer surface of the reactor shell is at least partially provided with a heating layer; and / or, the volume difference of the reaction materials in any two adjacent connected reaction chambers is within the range of ±10%.

[0016] On the other hand, the present application also provides a production line, comprising: a material reactor in any one of the above embodiments.

[0017] Beneficial effect: Since the production line includes a material reactor, it has the same technical effect as the material reactor and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of this application or the technical solutions in related technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic structural diagram of a material reactor according to an embodiment of the present application;

[0020] Figure 2 This is a cross-sectional view of a material reactor at a second baffle in an embodiment of the present application;

[0021] Figure 3 This is a schematic structural diagram of a ring tube assembly in a material reactor according to an embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of a half-section of a reactor shell in a material reactor in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 1. Reactor shell; 2. Ring tube assembly; 3. First baffle; 4. Second baffle; 5. Stirring assembly; 6. Feed pipe;

[0025] 11. Reaction chamber; 12. First feed port; 13. Second feed port; 14. Discharge port; 15. Gas outlet; 16. Liquid discharge port; 17. Heating layer; 18. Spiral guide plate;

[0026] 21. Ring tube body; 22. Current limiting element; 23. Filter component; 24. Spiral groove; 25. Spiral fin;

[0027] 31. Overflow notch; 41. Channel; 51. Mixing head. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0029] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. The terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. The terms "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In the relevant technology, during the production process of materials, some process steps undergo exothermic reactions, while other process steps undergo endothermic reactions; for example, glycidyl methacrylate is an important chemical raw material, widely used in powder coatings, adhesives, composite materials and other fields. Its production process includes open-loop and closed-loop methods. The open-loop and closed-loop methods are a continuous production process and have more advantages in industrial applications. The open-loop reaction releases a large amount of heat, and based on the reaction requirements and safety risks, the reaction temperature needs to be controlled within a smaller range; the closed-loop reaction needs to absorb a large amount of heat, and the reaction vessel needs to be heated.

[0031] However, traditional open-loop and closed-loop methods generally use tubular or shell-and-tube reactors. Tubular reactors have advantages such as fast reaction speed and small footprint, but they have a small heat transfer area and low heat transfer efficiency. Large amounts of solvent must be added to reduce the reaction temperature, resulting in high distillation energy consumption. While shell-and-tube reactors have strong heat transfer capabilities, they require high equipment investment. Furthermore, due to the high temperature of the ring-opening reaction, traditional processes generally use warm water for heat transfer, resulting in a large amount of low-temperature waste heat being wasted during the transfer process, leading to high production energy consumption and investment costs.

[0032] In order to solve the above technical problems, the present application provides a material reactor and production line, which can reduce the energy consumption and investment cost of material production.

[0033] The following combination Figures 1 to 4 , describing the embodiments of the present application.

[0034] According to an embodiment of the present application, on the one hand, a material reactor is provided, such as Figure 1 As shown, it includes a reactor shell 1 and a ring tube assembly 2, and the specific scheme is as follows.

[0035] like Figure 1 As shown, the reactor shell 1 has multiple reaction chambers 11, specifically, the number of reaction chambers 11 is 2 to 5, preferably 3 or 4; the multiple reaction chambers 11 are connected in series, that is, any two adjacent and connected reaction chambers 11 in the multiple reaction chambers 11 are connected by the outlet of one reaction chamber 11 to the inlet of another reaction chamber 11, but it is worth noting that the multiple reaction chambers 11 can be connected end to end in the connection order, or can be connected end to end in sequence not in the connection order (such as two reaction chambers 11 are arranged side by side, and the inlet and outlet of the two reaction chambers 11 are located on the same side, and the outlet of one reaction chamber 11 is connected to the inlet of another reaction chamber 11), preferably the former; the reactor shell 1 is provided with a first feed port 12 and multiple second feed ports 13.

[0036] Specifically, such as Figure 1 As shown, the first feed port 12 is used to introduce the reaction raw materials for the exothermic reaction in the loop tube assembly 2, and the second feed port 13 is used to introduce the reaction materials for the endothermic reaction in the reactor shell; in one example, the first feed port 12 can be used to introduce methacrylic acid, epichlorohydrin and a catalyst (the catalyst can be a quaternary ammonium salt) to carry out a ring-opening exothermic reaction, and the multiple second feed ports 13 can all be used to introduce a dilute aqueous solution of sodium hydroxide to carry out a ring-closing endothermic reaction with the intermediate product after the ring-opening reaction of methacrylic acid, epichlorohydrin and the catalyst.

[0037] like Figure 1As shown, the annular tube assembly 2 is arranged in the reactor shell 1, and multiple parts of the annular tube assembly 2 are distributed in multiple reaction chambers 11. The feed end of the annular tube assembly 2 is connected to the first feed port 12, and the discharge end of the annular tube assembly 2 is located in the source chamber. The source chamber is a reaction chamber 11 located at one end of multiple reaction chambers 11 connected in series, and multiple second feed ports 13 are respectively connected to the multiple reaction chambers 11.

[0038] In one example, if Figure 1 As shown, the ring tube assembly 2 can be arranged in the reactor shell 1 in a three-dimensional spiral shape, and its spiral direction can be in any direction (that is, the spiral axis can be in any direction).

[0039] In another example, not shown in the figure, the annular tube assembly 2 may include multiple pipe segments and multiple connectors, and the multiple pipe segments are arranged in sequence along a certain direction (which may be a straight direction or an arc direction), and the multiple pipe segments may be arranged in parallel or at an angle (the angle may be any angle between 1° and 89°), and the two ends of any pipe segment are respectively connected to the ends of the two adjacent pipe segments through connectors, and the connectors may be U-shaped elbows.

[0040] It should be explained that “the multiple parts of the ring tube assembly 2 are distributed in the multiple reaction chambers 11”, such as Figure 1 As shown, specifically, at least one section of the annular tube assembly 2 is provided in each reaction chamber 11 to directly exchange heat with the material in the reaction chamber 11. For example, the annular tube assembly 2 is in a three-dimensional spiral shape, and the direction of the spiral axis is vertically upward. The multiple reaction chambers 11 are arranged in any direction in the horizontal plane, so that in each circle of the annular tube assembly 2, it passes through the other reaction chambers 11 except the source chamber and the end chamber twice, and passes through the source chamber and the end chamber once. Of course, each circle of the annular tube assembly 2 may not pass through one or several reaction chambers 11.

[0041] In a specific use process, the first feed port 12 can be fed with methacrylic acid, epichlorohydrin and a catalyst (the catalyst can be a quaternary ammonium salt) to carry out a ring-opening exothermic reaction, and the multiple second feed ports 13 are all fed with a dilute aqueous solution of sodium hydroxide to carry out a ring-closing endothermic reaction with the intermediate product after the ring-opening reaction of methacrylic acid, epichlorohydrin and the catalyst.

[0042] like Figure 1As shown, methacrylic acid, epichlorohydrin and the catalyst are mixed by a mixing device (an existing product, the specific structure of which is not described in detail), and then introduced into the first feed port 12. The sodium hydroxide absorption water solution is respectively introduced into each reaction chamber 11 through multiple second feed ports 13. Methacrylic acid, epichlorohydrin and the catalyst undergo a ring-opening exothermic reaction in the loop tube component 2, and then are discharged into the source chamber through the discharge end of the loop tube component 2. Then, they flow into each reaction chamber 11 connected in series in sequence, and undergo a closed-loop endothermic reaction with the dilute sodium hydroxide solution in each reaction chamber 11.

[0043] During this period, methacrylic acid, epichlorohydrin and the catalyst undergo an open-loop exothermic reaction in the loop tube assembly 2, releasing a large amount of heat energy, which is directly heat-exchanged with the materials in each reaction chamber 11 through the loop tube assembly 2, providing heat for the closed-loop endothermic reaction in each reaction chamber 11.

[0044] In this embodiment, if Figure 1 As shown, by arranging the ring tube assembly 2 in the reactor shell 1 and distributing multiple parts of the ring tube assembly 2 in multiple reaction chambers 11, the ring tube assembly 2 injects the exothermic reaction material through the first feed port 12 to carry out an exothermic reaction, generating a large amount of heat. The ring tube assembly 2 directly provides heat for the endothermic reaction carried out in each reaction chamber 11, which can avoid the exothermic reaction being carried out in a container outside the reactor shell 1, and there is no need to transfer heat through a heat-conducting medium, so as to heat the reaction material in the reactor shell 1, thereby reducing the equipment investment cost and reducing the energy consumption of the material reaction.

[0045] In one embodiment, Figure 1 As shown, the material reactor further includes at least one first baffle 3 and at least one second baffle 4. The first baffle 3 and the second baffle 4 are both made of corrosion-resistant plates, such as 304 stainless steel, nickel-based alloy, titanium-based alloy, etc. The first baffle 3 and the second baffle 4 are spaced apart in the reactor shell 1. The top of the first baffle 3 and the top of the second baffle 4 are both spaced apart from the inner top of the reactor shell 1, that is, each reaction chamber 11 is connected to the space between the first baffle 3 or the second baffle 4 and the inner top of the reactor shell 1, as shown in FIG. Figure 2 As shown, a channel 41 is provided at the bottom of the second baffle 4 .

[0046] Specifically, the shape of the channel 41 provided at the bottom of the second baffle 4 can be circular, rectangular, or irregularly arc-shaped, etc. Preferably, the channel 41 has a boundary consisting of two arcs. In one example, an arc-shaped notch is provided at the bottom of the second baffle 4, and the reactor shell 1 is a horizontal cylindrical shape. The arc-shaped notch at the bottom of the second baffle 4 is enclosed by the inner bottom surface of the reactor shell 1 to form the channel 41.

[0047] It should be noted that when there are multiple first baffles 3 and / or multiple second baffles 4, the first baffles 3 and the second baffles 4 are alternately arranged in sequence. For example, if there are two first baffles 3 and one second baffle 4, the second baffle 4 is located between the two first baffles 3.

[0048] In the specific use process, such as Figure 1 As shown, a first baffle 3 and a second baffle 4 are arranged at intervals as an example.

[0049] like Figure 1 As shown, after the reaction material reacts in the source chamber, it flows through the space above the first baffle 3 and enters the adjacent reaction chamber 11, and then enters the tail chamber through the channel 41 at the bottom of the second baffle 4, thereby realizing the upward and downward deflection of the reaction material between multiple reaction chambers 11.

[0050] In this embodiment, if Figure 1 and Figure 2 As shown, the top of the first baffle 3 is spaced apart from the inner top of the reactor shell 1, and a channel 41 is provided at the bottom of the second baffle 4 to connect two adjacent reaction chambers 11. This enables the reaction materials to be deflected up and down between multiple adjacent reaction chambers 11, thereby improving the mixing uniformity of the reaction materials and the sufficiency of the reaction.

[0051] In one embodiment, Figure 2 As shown, the top of the first baffle 3 is provided with a plurality of overflow notches 31 ; and / or the top of the second baffle 4 is spaced apart from the inner top of the reactor shell 1 , and the top of the second baffle 4 is provided with a plurality of overflow notches 31 channels 41 .

[0052] Specifically, such as Figure 2 As shown, the overflow notch 31 can be formed in at least any one of the shapes of a triangle, a trapezoid and a rectangle, and can of course be any other shape.

[0053] In a specific use process, when the flow rate of the reaction material in the reactor is relatively large, the reaction material can pass through the channel 41 at the bottom of the second baffle 4 and the space above the second baffle 4 at the same time.

[0054] In this embodiment, the top of the second baffle 4 is spaced from the inner top of the reactor shell 1, which can improve the circulation diversity of the reaction materials between the reaction chambers 11 on both sides of the second baffle 4 and improve the reaction mixing effect; the top of the first baffle 3 and the top of the second baffle 4 are both provided with overflow notches 31, which can prevent the occurrence of biased flow, facilitate the stabilization of the flow direction of the liquid surface, and facilitate uniform mixing of the materials.

[0055] In one embodiment, Figure 1As shown, the annular tube assembly 2 is arranged in a spiral descending shape in the reactor shell 1; specifically, the annular tube assembly 2 is close to the inner wall of the reactor shell 1, and the spiral radius of each circle in the annular tube assembly 2 is the same, or the distance between the annular tube assembly 2 and the inner wall of the reactor shell 1 is the same.

[0056] and / or, such as Figure 1 As shown, the portion of the annular tube assembly 2 close to the discharge end is tilted downward, and the discharge end is close to the bottom of the reaction chamber 11, which can realize the transportation of the reaction materials in the annular tube assembly 2 to the inner bottom of the source chamber, thereby improving the mixing effect of the reaction materials.

[0057] In one embodiment, Figure 1 As shown, the annular tube assembly 2 includes an annular tube body 21 , the outer surface of which is provided with spiral grooves 24 ; the inner surface of which is provided with spiral fins 25 .

[0058] Specifically, such as Figure 3 As shown, the outer diameter D of the annular tube assembly 2 is 20 mm to 50 mm, and can be any value among 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm and 50 mm, or a range between any two values; the pitch N of the spiral groove 24 is 1.5 mm to 3.0 mm, and can be any value among 1.5 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm and 3 mm, or a range between any two values; the depth H of the spiral groove 24 is 0.8 mm to 1.2 mm, and can be any value among 0.8 mm, 0.9 mm, 1 mm, 1.1 mm and 1.2 mm, or a range between any two values; the width F of the spiral groove 24 is 0.4 mm to 0.8 mm, and can be any value among 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm and 0.8 mm, or a range between any two values.

[0059] like Figure 3 As shown, the height M of the spiral fin 25 is 0.8mm~1.4mm, which can be any value among 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm and 1.4mm, or a range between any two values; the pitch W of the spiral fin 25 is 1.0mm~2.2mm, which can be any value among 1mm, 1.3mm, 1.5mm, 1.7mm, 2mm and 2.2mm, or a range between any two values.

[0060] The internal apparent flow velocity of the annular tube assembly 2 is 0.5 m / s to 1.1 m / s, and the average flow velocity under the action of the fins is 0.76 m / s to 1.6 m / s.

[0061] During specific use, the reaction materials can rotate and move forward under the backflow of the spiral fins 25 in the annular tube assembly 2 to fully mix the reaction materials. The heat released by the reaction of the reaction materials in the annular tube assembly 2 is absorbed by the annular fins and quickly exchanges heat with the reaction materials in each reaction chamber 11 through the spiral grooves 24 on the outside of the annular tube assembly 2.

[0062] In this embodiment, the outer wall of the annular tube assembly 2 is provided with a spiral groove 24 for strengthening the surface gas-liquid two-phase flow, reducing the dirt deposition rate, and improving the boiling heat transfer efficiency of the annular tube; at the same time, the inner wall of the annular tube assembly 2 is provided with a spiral fin 25 for increasing the specific surface area of the inner tube and improving the heat transfer efficiency inside the tube.

[0063] In one embodiment, Figure 1 As shown, the annular tube assembly 2 further includes a flow limiting element 22, which is arranged on a portion of the annular tube body 21 near the discharge end; specifically, the flow limiting element 22 is an orifice flowmeter, a venturi tube, a nozzle flowmeter, a ball valve, a butterfly valve, etc., which can control the flow rate and pressure at the outlet of the annular tube assembly 2 by controlling the opening. It is preferably an orifice flowmeter with an orifice pressure drop of 1.8 bar; the flow limiting element 22 is limited to 100 mm to 200 mm from the outlet end of the annular tube body 21, which can be any one of 100 mm, 120 mm, 140 mm, 160 mm, 180 mm and 200 mm or a range between any two values.

[0064] and / or, such as Figure 1 As shown, the annular tube assembly 2 also includes a filter component 23, which is arranged on the discharge end. Specifically, the filter component 23 is a filter screen with a mesh size of 200; or a filter head with a filtering function (an existing product); the filter component 23 is detachably connected to the outlet end of the annular tube body 21, such as being connected to the outlet end of the annular tube body 21 by a threaded connection or a clamping connection.

[0065] During specific use, by controlling the opening of the flow limiting element 22, the pressure drop is controlled to 1.0 bar to 2.0 bar, so that high pressure is maintained in the annular tube assembly 2. The filter can prevent impurities in the reaction chamber 11 from entering the annular tube assembly 2 during the reaction process.

[0066] In this embodiment, if Figure 1 As shown, a flow-limiting element 22 is provided on the portion of the annular tube body 21 near the discharge end. The temperature inside the annular tube assembly 2 is higher than the temperature inside the reaction chamber 11. The material in the annular tube assembly 2 will be vaporized when entering the reaction chamber 11. The flow-limiting element 22 is mainly used to hold back the pressure inside the annular tube assembly 2 to avoid the vaporization of the material in the annular tube assembly 2 and causing vibration of the equipment. The setting of the filter component 23 can prevent impurities in the reaction chamber 11 from entering the annular tube assembly 2 during the reaction process.

[0067] In one embodiment, Figure 1 As shown, the material reactor also includes a plurality of stirring components 5, and the plurality of stirring components 5 are arranged on the reactor shell 1, and the stirring heads 51 of the plurality of stirring components 5 are respectively located in a plurality of reaction chambers 11; in one example, the stirring component 5 includes a motor and a stirring blade, and the stirring blade is fixedly connected to the rotating shaft of the motor, and the motor is fixed to the outside of the reactor shell 1 by bolts, and the stirring blade is located in the reaction chamber 11, and the rotating shaft of the motor passes through the reactor shell 1 and is rotatably connected to the reactor through a sealed bearing.

[0068] Specifically, the stirring head 51 is an axial flow stirring blade; the rotation axis of the stirring head 51 is arranged along the height direction of the reactor shell 1.

[0069] In this embodiment, the provision of the stirring assembly 5 can increase the material mixing speed and reaction speed in the reaction chamber 11 .

[0070] In a specific embodiment, Figure 4 As shown, the stirring head 51 is an axial flow stirring head 51 , the rotating shaft of the stirring head 51 is arranged vertically, and a spiral guide piece 18 is arranged on the inner side wall of the reaction chamber 11 , and the axial direction of the spiral guide piece 18 is the vertical direction.

[0071] During specific use, the axial flow stirring head 51 can spiral the material upward, and the spiral guide piece 18 can guide the rotating material near the inner wall of the reaction chamber 11 downward, thereby improving the mixing effect of the material.

[0072] In one embodiment, Figure 1 As shown, the material reactor further includes a plurality of feed pipes 6. Specifically, the feed pipes 6 are metal pipes. The first ends of the plurality of feed pipes 6 are sealedly connected to the plurality of second feed ports 13 via bolts and gaskets. The second ends of the plurality of feed pipes 6 are respectively located within the plurality of reaction chambers 11. Within each reaction chamber 11, the second end of the feed pipe 6 is located above the stirring head 51. Specifically, the distance between the second end of the feed pipe 6 and the stirring head 51 is 100 mm to 200 mm, and can be any one of 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, and 200 mm, or a range between any two of these values.

[0073] During specific use, the multiple feeding pipes 6 input the material to the top of the stirring head 51, and the rotation of the stirring head 51 can quickly achieve the diffusion of the material.

[0074] In one embodiment, Figure 1As shown, the material reactor also includes a discharge port 14, which is connected to the tail chamber. The tail chamber is a reaction chamber 11 located at one end of a plurality of reaction chambers 11 connected in series, away from the source chamber. The height of the discharge port 14 is the same as the top surface of the first baffle 3 or the top surface of the second baffle 4 that surrounds the tail chamber; the height of the discharge port 14 is 60% to 90% of the height of the reactor shell 1, and can be any one value between 75% and 80% or a range between the two values.

[0075] and / or, such as Figure 1 As shown, an air outlet 15 is provided on the top of the reactor shell 1, and the air outlet 15 is used to connect with the material recovery equipment; specifically, the material recovery equipment can be a condensation dehydration equipment (existing product, the specific structure is not described in detail), which can recycle and reuse the vaporized material.

[0076] and / or, such as Figure 1 As shown, at the bottom of the reactor shell 1, at least one drain port 16 is provided at the positions on both sides of the first baffle 3; specifically, there are two drain ports 16, which are respectively located on both sides of the first baffle 3, for discharging the materials located on both sides of the first baffle 3; of course, the number of drain ports 16 located on both sides of the first baffle 3 can be multiple, which can be set according to actual needs.

[0077] and / or, such as Figure 1 As shown, the outer surface of the reactor shell 1 is at least partially provided with a heating layer 17. Specifically, the heating layer 17 is provided below a certain height on the outside of the reactor shell 1, and a spiral heating medium flow channel is provided in the heating and insulation layer. The heating medium can be steam or water, etc.

[0078] And / or, the volume difference of the reaction materials in any two adjacent connected reaction chambers 11 is within the range of ±10%, which can ensure that the residence time of the materials in each reactor is basically consistent, and the residence time determines the reaction effect.

[0079] In one embodiment, a material reactor is provided, such as Figure 1 As shown, it includes a reactor shell 1 and a ring tube assembly 2, a first baffle 3, a second baffle 4, a stirring assembly 5 and a feed pipe 6. The specific scheme is as follows.

[0080] like Figure 1As shown, the reactor shell 1 has multiple reaction chambers 11, specifically, the number of reaction chambers 11 is 2 to 5, preferably 3; the multiple reaction chambers 11 are connected in series, that is, any two adjacent and connected reaction chambers 11 in the multiple reaction chambers 11 are connected at the outlet of one reaction chamber 11 to the inlet of another reaction chamber 11, but it is worth noting that the multiple reaction chambers 11 can be connected end to end in the connection order, or can be connected end to end in sequence not in the connection order (such as two reaction chambers 11 are arranged side by side, and the inlet and outlet of the two reaction chambers 11 are located on the same side, and the outlet of one reaction chamber 11 is connected to the inlet of another reaction chamber 11), preferably the former; the reactor shell 1 is provided with a first feed port 12 and multiple second feed ports 13.

[0081] like Figure 1 As shown, the annular tube assembly 2 is arranged in the reactor shell 1, and multiple parts of the annular tube assembly 2 are distributed in multiple reaction chambers 11. The feed end of the annular tube assembly 2 is connected to the first feed port 12, and the discharge end of the annular tube assembly 2 is located in the source chamber. The source chamber is a reaction chamber 11 located at one end of multiple reaction chambers 11 connected in series, and multiple second feed ports 13 are respectively connected to the multiple reaction chambers 11.

[0082] More specifically, the first baffle 3 and the second baffle 4 are both corrosion-resistant plates, such as 304 stainless steel, nickel-based alloy, titanium-based alloy, etc. The first baffle 3 and the second baffle 4 are spaced apart in the reactor shell 1, and the top of the first baffle 3 and the top of the second baffle 4 are both spaced apart from the inner top of the reactor shell 1, that is, each reaction chamber 11 is connected to the space between the first baffle 3 or the second baffle 4 and the inner top of the reactor shell 1, as shown in FIG. Figure 2 As shown, a channel 41 is provided at the bottom of the second baffle 4 .

[0083] Specifically, the shape of the channel 41 provided at the bottom of the second baffle 4 can be circular, rectangular, or irregularly arc-shaped, etc. Preferably, the channel 41 has a boundary consisting of two arcs. In one example, an arc-shaped notch is provided at the bottom of the second baffle 4, and the reactor shell 1 is a horizontal cylindrical shape. The arc-shaped notch at the bottom of the second baffle 4 is enclosed by the inner bottom surface of the reactor shell 1 to form the channel 41.

[0084] It should be noted that when there are multiple first baffles 3 and / or multiple second baffles 4, the first baffles 3 and the second baffles 4 are alternately arranged in sequence. For example, if there are two first baffles 3 and one second baffle 4, the second baffle 4 is located between the two first baffles 3.

[0085] More specifically, Figure 2As shown, the top of the first baffle 3 is provided with a plurality of overflow notches 31 ; and / or the top of the second baffle 4 is spaced apart from the inner top of the reactor shell 1 , and the top of the second baffle 4 is provided with a plurality of overflow notches 31 channels 41 .

[0086] Specifically, such as Figure 2 As shown, the overflow notch 31 can be formed in at least any one of the shapes of a triangle, a trapezoid and a rectangle, and can of course be any other shape.

[0087] More specifically, Figure 1 As shown, the annular tube assembly 2 is arranged in a spiral descending shape in the reactor shell 1; specifically, the annular tube assembly 2 is close to the inner wall of the reactor shell 1, and the spiral radius of each circle in the annular tube assembly 2 is the same, or the distance between the annular tube assembly 2 and the inner wall of the reactor shell 1 is the same.

[0088] like Figure 1 As shown, the portion of the annular tube assembly 2 close to the discharge end is arranged to be inclined downward, and the discharge end is close to the bottom of the reaction chamber 11 .

[0089] More specifically, Figure 1 As shown, the annular tube assembly 2 includes an annular tube body 21 , the outer surface of which is provided with spiral grooves 24 ; the inner surface of which is provided with spiral fins 25 .

[0090] Specifically, such as Figure 3 As shown, the outer diameter D of the annular tube assembly 2 is 20 mm to 50 mm, and can be any value among 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm and 50 mm, or a range between any two values; the pitch N of the spiral groove 24 is 1.5 mm to 3.0 mm, and can be any value among 1.5 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm and 3 mm, or a range between any two values; the depth H of the spiral groove 24 is 0.8 mm to 1.2 mm, and can be any value among 0.8 mm, 0.9 mm, 1 mm, 1.1 mm and 1.2 mm, or a range between any two values; the width F of the spiral groove 24 is 0.4 mm to 0.8 mm, and can be any value among 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm and 0.8 mm, or a range between any two values.

[0091] like Figure 3As shown, the height M of the spiral fin 25 is 0.8mm~1.4mm, which can be any value among 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm and 1.4mm, or a range between any two values; the pitch W of the spiral fin 25 is 1.0mm~2.2mm, which can be any value among 1mm, 1.3mm, 1.5mm, 1.7mm, 2mm and 2.2mm, or a range between any two values.

[0092] The internal apparent flow velocity of the annular tube assembly 2 is 0.5 m / s to 1.1 m / s, and the average flow velocity under the action of the fins is 0.76 m / s to 1.6 m / s.

[0093] More specifically, Figure 1 As shown, the annular tube assembly 2 further includes a flow limiting element 22, which is arranged on a portion of the annular tube body 21 near the discharge end; specifically, the flow limiting element 22 is an orifice flowmeter, a venturi tube, a nozzle flowmeter, a ball valve, a butterfly valve, etc., which can control the flow rate and pressure at the outlet of the annular tube assembly 2 by controlling the opening. It is preferably an orifice flowmeter with an orifice pressure drop of 1.8 bar; the flow limiting element 22 is limited to 100 mm to 200 mm from the outlet end of the annular tube body 21, which can be any one of 100 mm, 120 mm, 140 mm, 160 mm, 180 mm and 200 mm or a range between any two values.

[0094] like Figure 1 As shown, the annular tube assembly 2 also includes a filter component 23, which is arranged on the discharge end. Specifically, the filter component 23 is a filter screen with a mesh size of 200; or a filter head with a filtering function (an existing product); the filter component 23 is detachably connected to the outlet end of the annular tube body 21, such as being connected to the outlet end of the annular tube body 21 by a threaded connection or a clamping connection.

[0095] To be more specific, multiple stirring components 5 are arranged on the reactor shell 1, and the stirring heads 51 of the multiple stirring components 5 are respectively located in multiple reaction chambers 11; in one example, the stirring component 5 includes a motor and a stirring blade, the stirring blade is fixedly connected to the rotating shaft of the motor, the motor is fixed to the outside of the reactor shell 1 by bolts, the stirring blade is located in the reaction chamber 11, and the rotating shaft of the motor passes through the reactor shell 1 and is rotatably connected to the reactor through a sealed bearing.

[0096] More specifically, Figure 4 As shown, the stirring head 51 is an axial flow stirring head 51 , the rotating shaft of the stirring head 51 is arranged vertically, and a spiral guide piece 18 is arranged on the inner side wall of the reaction chamber 11 , and the axial direction of the spiral guide piece 18 is the vertical direction.

[0097] More specifically, the feed pipe 6 is a metal pipe. The first ends of the plurality of feed pipes 6 are sealedly connected to the plurality of second feed ports 13 via bolts and gaskets. The second ends of the plurality of feed pipes 6 are respectively located within the plurality of reaction chambers 11. Within each reaction chamber 11, the second end of the feed pipe 6 is located above the stirring head 51. Specifically, the distance between the second end of the feed pipe 6 and the stirring head 51 is 100 mm to 200 mm, and can be any one of 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, and 200 mm, or a range between any two of these values.

[0098] To be more specific, the discharge port 14 is connected to the tail chamber, which is a reaction chamber 11 located at one end of a plurality of reaction chambers 11 connected in series, away from the source chamber. The height of the discharge port 14 is the same as the top surface of the first baffle 3 or the top surface of the second baffle 4 that encloses the tail chamber. The height of the discharge port 14 is 75% of the height of the reactor shell 1.

[0099] like Figure 1 As shown, an air outlet 15 is provided on the top of the reactor shell 1, and the air outlet 15 is used to connect with the material recovery equipment; specifically, the material recovery equipment can be a condensation dehydration equipment (existing product, the specific structure is not described in detail), which can recycle and reuse the vaporized material.

[0100] like Figure 1 As shown, at the bottom of the reactor shell 1 , at both sides of the first baffle 3 , there are at least one drain port 16 ; specifically, there are two drain ports 16 , one located on both sides of the first baffle 3 , for discharging materials on both sides of the first baffle 3 .

[0101] like Figure 1 As shown, the outer surface of the reactor shell 1 is at least partially provided with a heating layer 17. Specifically, the heating layer 17 is provided below a certain height on the outside of the reactor shell 1, and a spiral heating medium flow channel is provided in the heating and insulation layer. The heating medium can be steam or water, etc.

[0102] The volume difference of the reaction materials in any two adjacent connected reaction chambers 11 is within the range of ±10%, which can ensure that the residence time of the materials in each reactor is basically consistent. The residence time determines the reaction effect.

[0103] In a specific use process, the first feed port 12 can be fed with methacrylic acid, epichlorohydrin and a catalyst (the catalyst can be a quaternary ammonium salt) to carry out a ring-opening exothermic reaction, and the multiple second feed ports 13 are all fed with a dilute aqueous solution of sodium hydroxide to carry out a ring-closing endothermic reaction with the intermediate product after the ring-opening reaction of methacrylic acid, epichlorohydrin and the catalyst.

[0104] The mixed methacrylic acid, epichlorohydrin and catalyst enter the reactor shell 1 through the first feed port 12, react fully in the loop assembly 2, and then enter the source cavity in the reaction shell after being decompressed by the flow limiting element 22 and the filter component 23.

[0105] The dilute aqueous sodium hydroxide solution is pumped into each reaction chamber in the reactor shell 1 through multiple second feed ports 13. The intermediate product from the loop tube assembly 2 enters the source chamber, mixes with the sodium hydroxide, and partially reacts under the action of stirring. The reaction material overflows over the first baffle 3 and enters the adjacent reaction chamber 11, continues to react with the added sodium hydroxide, and then enters the tail chamber through the arched channel 41 at the bottom of the second baffle 4, continues to react with the added sodium hydroxide, and the fully reacted reaction material flows out of the reactor shell 1 through the liquid outlet.

[0106] The operating temperature of the loop tube assembly 2 is 75°C to 85°C, and the operating pressure is 1.9 bar to -3 barA; the operating temperature of the reactor shell 1 is 58°C to 60°C, and the operating pressure is 0.1 barA. During the reaction, most of the heat released by the reaction in the loop tube assembly 2 is transferred to the reactor shell 1 through the loop tube wall, and some heat is directly brought into the reactor shell 1 in the form of sensible heat, causing the light components such as epichlorohydrin and water in the reactor to vaporize. The insufficient heat for the closed-loop reaction is provided by the heating layer 17 outside the reaction shell to maintain a stable operating temperature of the reactor.

[0107] The vaporized epichlorohydrin and water are discharged to the external condensation and dehydration equipment through the exhaust port. The epichlorohydrin after dehydration is transported by a pump and respectively injected into the reactor through the first feed port 12.

[0108] In this embodiment, compared with a conventional tubular reactor, the amount of epichlorohydrin used can be reduced by 30%. At the same time, all the heat released by the ring-opening reaction is used for heating the ring-closing reaction. Taking a production unit with a production capacity of 10,000 tons / year as an example, about 700kW of heat can be saved annually, accounting for about 26% of the total steam energy consumption of the unit.

[0109] According to an embodiment of the present application, on the other hand, a production line is provided, comprising: the material reactor in any one embodiment of the first aspect.

[0110] Specifically, the production line may be a line for producing any product having exothermic and endothermic processes, such as a production line for glycidyl methacrylate.

[0111] In this embodiment, since the production line includes a material reactor, it has the same technical effect as the material reactor and will not be described in detail here.

[0112] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A material reactor, characterized in that: include: A reactor shell (1) has a plurality of reaction chambers (11), wherein the plurality of reaction chambers (11) are connected in series; a first feed port (12) and a plurality of second feed ports (13) are provided on the reactor shell (1); A ring tube assembly (2) is arranged in the reactor shell (1), multiple parts of the ring tube assembly (2) are distributed in multiple reaction chambers (11), the feed end of the ring tube assembly (2) is connected to the first feed port (12), the discharge end of the ring tube assembly (2) is located in a source chamber, the source chamber is the reaction chamber (11) located at one end of the multiple reaction chambers (11) connected in series, and the multiple second feed ports (13) are respectively connected to the multiple reaction chambers (11).

2. The material reactor according to claim 1, characterized in that: The reactor shell (1) further comprises at least one first baffle (3) and at least one second baffle (4), wherein the first baffle (3) and the second baffle (4) are spaced apart and arranged inside the reactor shell (1), the top of the first baffle (3) is spaced apart from the inner top of the reactor shell (1), and the bottom of the second baffle (4) is provided with a channel (41).

3. The material reactor according to claim 2, characterized in that: A plurality of overflow notches (31) are provided on the top of the first baffle (3); And / or, the top of the second baffle (4) is spaced apart from the inner top of the reactor shell (1), and the top of the second baffle (4) is provided with a plurality of overflow notches (31).

4. The material reactor according to any one of claims 1 to 3, characterized in that: The annular tube assembly (2) is arranged in a spiral descending shape inside the reactor shell (1); And / or, the portion of the annular tube assembly (2) close to the discharge end is arranged to be inclined downward, and the discharge end is close to the bottom of the reaction chamber (11).

5. The material reactor according to any one of claims 1 to 3, characterized in that: The annular tube assembly (2) comprises an annular tube body (21), the outer surface of the annular tube body (21) is provided with a spiral groove (24); the inner surface of the annular tube body (21) is provided with a spiral fin (25).

6. The material reactor according to claim 5, characterized in that: The annular tube assembly (2) further comprises a flow-limiting element (22), and the flow-limiting element (22) is arranged on a portion of the annular tube body (21) close to the discharge end; And / or, the annular tube assembly (2) further comprises a filter component (23), and the filter component (23) is arranged on the discharge end.

7. The material reactor according to any one of claims 1 to 3, characterized in that: It also includes a plurality of stirring assemblies (5), which are arranged on the reactor shell (1), and the stirring heads (51) of the plurality of stirring assemblies (5) are respectively located in the plurality of reaction chambers (11).

8. The material reactor according to claim 7, characterized in that: It also includes a plurality of material delivery pipes (6), wherein the first ends of the plurality of material delivery pipes (6) are respectively connected to the plurality of second material feed ports (13), and the second ends of the plurality of material delivery pipes (6) are respectively located in the plurality of reaction chambers (11); Wherein, in each of the reaction chambers (11), the second end of the feed pipe (6) is located above the stirring head (51).

9. The material reactor according to claim 2 or 3, characterized in that: The device further comprises a discharge port (14), the discharge port (14) being in communication with a tail chamber, the tail chamber being the reaction chamber (11) located at one end of the plurality of reaction chambers (11) connected in series and away from the source chamber, the discharge port (14) having a height that is the same as the top surface of the first baffle (3) or the top surface of the second baffle (4) that encloses the tail chamber; And / or, a gas outlet (15) is provided on the top of the reactor shell (1), and the gas outlet (15) is used to communicate with a material recovery device; And / or, at least one drain port (16) is provided at the bottom of the reactor shell (1) at locations on both sides of the first baffle (3); and / or, the outer surface of the reactor shell (1) is at least partially provided with a heating layer (17); And / or, the volume difference of the reaction materials in any two adjacent and connected reaction chambers (11) is within the range of ±10%.

10. A production line, characterized in that: include: The material reactor according to any one of claims 1 to 9.

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