Fractionation and purification device for isobornyl methacrylate

Abstract

The utility model is applicable to the field of methacrylate production equipment, and discloses an isobornyl methacrylate fractionating and purifying device which comprises a first heating box, a first fractionating tower, a first condenser, a second heating box, a second fractionating tower, a second condenser, a circulating oil inlet pipeline, a circulating oil outlet pipeline, a raw material storage tank and an oil cooler. According to the utility model, the raw material storage tank with the first jacket is used for storing camphene, so that when the heated cooling medium is conveyed into the first jacket, the heat carried by the cooling medium can be transferred into the raw material storage tank and can be used for melting camphene, thereby realizing the recycling of the heat carried by the cooling medium; according to the technical scheme, the heat energy waste condition is improved, the energy consumption of the oil cooling machine can be reduced, the camphene can be easily conveyed into the reaction kettle, the camphene can be uniformly mixed with methacrylic acid in the reaction kettle, the reaction time of the camphene and the methacrylic acid can be shortened, and the amount of byproducts can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of methacrylate production equipment, in particular to a fractionation and purification device for isobornyl methacrylate. Background Art

[0002] Isobornyl methacrylate is a monomer with excellent heat resistance, weather resistance, water resistance, wear resistance, and toxicity resistance, and is widely used in coatings, adhesives, optical resins, and other fields. Isobornyl methacrylate can be obtained by esterifying camphene and methacrylic acid under catalytic conditions. In existing production processes, some unreacted methacrylic acid and camphene remain in the reaction product, so after the catalytic reaction is completed, the reaction product needs to be fractionated and purified.

[0003] A fractionation purification device typically includes a fractionation tower. For example, Chinese patent publication CN116474394A discloses a fractionation subsystem for fractionating and purifying isobornyl acrylate. The fractionation subsystem includes a first heating device, a first fractionation tower, a second heating device, and a second fractionation tower connected in sequence. The first heating device is used to evaporate residual acrylic acid and camphene in the reaction product. After passing through the first fractionation tower, the acrylic acid and camphene are liquefied by a cooling device within the fractionation tower, thereby recovering the raw materials.

[0004] However, when the cooling equipment in the distillation tower liquefies volatile substances such as acrylic acid and camphene, the temperature of the cooling medium in the cooling equipment will increase. After the temperature of the cooling medium increases, the heat carried by the cooling medium cannot be recycled, resulting in a waste of heat energy.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0006] The utility model provides a fractionation and purification device for isobornyl methacrylate, aiming to solve the problem that after the temperature of the cooling medium in the cooling equipment rises, the heat carried by the cooling medium cannot be recycled, resulting in heat energy waste.

[0007] In order to achieve the above purpose, the solution provided by the utility model is:

[0008] A fractionation and purification device for isobornyl methacrylate, comprising a first heating box connected to a discharge port of a reactor, a first fractionation tower connected to the first heating box, a first condenser connected to the first fractionation tower, a second heating box connected to the first fractionation tower, a second fractionation tower connected to the second heating box, and a second condenser connected to the second fractionation tower; and further comprising:

[0009] A circulating oil inlet pipeline, wherein the circulating oil inlet pipeline is used to circulate a cooling medium into the first condenser and the second condenser, wherein the cooling medium is heat transfer oil;

[0010] A raw material storage tank is provided with a first jacket connected to a circulating oil inlet pipeline between the inner wall and the outer wall of the raw material storage tank, and camphene is stored in the raw material storage tank;

[0011] a circulating oil outlet pipeline, the circulating oil outlet pipeline being used to deliver the cooling medium from the first condenser and the second condenser, and the circulating oil outlet pipeline being in communication with the first jacket;

[0012] An oil cooler is provided on the circulating oil inlet pipeline.

[0013] Optionally, the raw material storage tank includes a tank body, a stirring mechanism arranged in the tank body, a first heating component arranged at the bottom of the tank body, a first temperature sensor inserted in the tank body, a first feed pipe connected to the tank body discharge port and the reactor, and a feed pump arranged on the first feed pipe.

[0014] Optionally, the first heating box and the second heating box both include a box body, and a second jacket is provided between the inner wall and the outer wall of the box body.

[0015] Optionally, the first heating box and the second heating box each further include:

[0016] A second heating component is disposed in the second jacket.

[0017] Optionally, heat transfer oil is stored in the box; the first heating box and the second heating box also include a second feed pipe; the second feed pipe is arranged in the box, and the feed end of the second feed pipe is connected to the discharge port of the reactor or the discharge port of the first distillation tower, and the discharge end of the second feed pipe is connected to the liquid inlet of the first distillation tower or the liquid inlet of the second distillation tower.

[0018] Optionally, the second material delivery pipe is arranged in an S shape in the box.

[0019] Optionally, a second temperature sensor is inserted into the box body, and a third temperature sensor is provided at the discharge end of the second conveying pipe.

[0020] Optionally, the distillation and purification device for isobornyl methacrylate further includes a raw material recovery tank, which is connected to the first condenser, and a polymerization inhibitor addition port is provided at the top of the raw material recovery tank, and a discharge pipe is connected to the bottom of the raw material recovery tank, and a discharge control valve is provided on the discharge pipe.

[0021] Beneficial effects:

[0022] The utility model provides a fractionation and purification device for isobornyl methacrylate. Camphene is stored in a raw material storage tank having a first jacket. When a heated cooling medium is transported into the first jacket, heat carried by the cooling medium can be transferred into the raw material storage tank and used to melt the camphene, thereby realizing the recovery and utilization of the heat carried by the cooling medium. While improving the waste of heat energy, the energy consumption of the oil chiller can also be reduced. In addition, the camphene can be easily transported into a reactor, so that the camphene can be uniformly mixed with the methacrylic acid in the reactor. The reaction time of the camphene and methacrylic acid can be shortened, the amount of by-products can be reduced, and the yield of the isobornyl methacrylate can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic structural diagram of a device for fractionating and purifying isobornyl methacrylate provided by the present invention.

[0024] Figure 2 It is a simplified structural diagram of the raw material storage tank.

[0025] Figure 3 It is a simplified structural diagram of the first heating box.

[0026] Figure 4 It is a simplified structural diagram of the raw material recovery tank.

[0027] Description of Figure Numbers:

[0028] 1-reactor;

[0029] 2-first heating box; 21-box body; 211-second jacket; 22-second heating assembly; 23-second feed pipe;

[0030] 3-first fractionating tower; 4-first condenser; 5-second heating box; 6-second fractionating tower; 7-second condenser;

[0031] 8- circulating oil inlet pipeline;

[0032] 9-Raw material storage tank; 91-Tank body; 911-First jacket; 92-Stirring mechanism; 93-First heating assembly; 94-First temperature sensor; 95-First feed pipe; 96-Feed pump;

[0033] 10-circulating oil outlet pipeline; 11-oil cooler; 12-second temperature sensor; 13-third temperature sensor;

[0034] 14-Raw material recovery tank; 141-Inhibitor addition port;

[0035] 15-discharge pipe; 16-discharge control valve; 17-finished product storage tank; 18-by-product storage tank. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0039] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0040] See also Figures 1 to 4 The utility model improves a fractionation and purification device for isobornyl methacrylate, which includes a first heating box 2, a first distillation tower 3, a first condenser 4, a second heating box 5, a second distillation tower 6 and a second condenser 7, a circulating oil inlet pipeline 8, a circulating oil outlet pipeline 10, a raw material storage tank 9, and an oil chiller 11.

[0041] Wherein, the first heating box 2 has a feed end, is connected with the discharge port of reactor 1 with this.Reactor 1 can be the existing reactor 1 for the preparation of isobornyl methacrylate.After methacrylic acid and amphene react in reactor 1, reaction product enters in the first heating box 2 and heats, so that the temperature of reaction product reaches more than the boiling point of methacrylic acid and amphene.The liquid inlet of the first fractionating tower 3 is connected with the discharge end of the first heating box 2, and the first condenser 4 is connected with the exhaust port of the first fractionating tower 3. After the first heating box 2 heats, reaction product is transported in the first fractionating tower 3. At this moment, the temperature of reaction product reaches more than the boiling point of methacrylic acid and amphene. Methacrylic acid and amphene can enter in the first condenser 4 and cool down and liquefy as steam, thereby methacrylic acid, amphene are separated from reaction product, and after methacrylic acid and amphene are liquefied, are transported to and stored in the raw material recovery tank 14 by pipeline. The second heating box 5 is connected to the discharge port of the first fractionating tower 3 and the liquid inlet of the second fractionating tower 6 at the same time, and the second condenser 7 is connected to the exhaust port of the second fractionating tower 6. After methacrylic acid and camphene are separated from the reaction product by the first distillation tower, the reaction product continues to be transported to the second heating box 5, and the reaction product is heated to above the boiling point of isobornyl methacrylate by the second heating box 5, so that when the reaction product is transported in the second fractionating tower 6, isobornyl methacrylate can enter the second condenser 7 in the form of steam and liquefy, i.e., finally realize the fractionation and purification of isobornyl methacrylate. It is understandable that the transportation of the reaction product between the (first and second) heating box and the (first and second) fractionating tower can be realized by a feed pump 96.

[0042] Wherein, circulation oil inlet pipeline 8 and circulation oil outlet pipeline 10 are all connected with the cooling medium pipeline in the first condenser 4 and the second condenser 7 simultaneously, and stock storage tank 9 is used for storing amphene, and is provided with the first chuck 911 that is connected with circulation oil inlet pipeline 8 between the inwall and the outer wall of stock storage tank 9.Oil chiller 11 is located on circulation oil inlet pipeline 8, and it is used for cooling thermal oil, can be used for liquefying volatile organic compound when making thermal oil send into the first condenser 4 and the second condenser 7.Concrete, circulation oil inlet pipeline 8 is used for sending into (can pass through oil transfer pump) cooling medium to the first condenser 4 and the second condenser 7 internal circulation, and circulation oil outlet pipeline 10 is used for sending the cooling medium after heat exchange temperature-raising from the first condenser 4 and the second condenser 7, and makes the cooling medium after heating up be transported in the first chuck 911.Cooling medium is thermal oil.

[0043] Since camphene is a white waxy solid at room temperature, the present invention uses a raw material storage tank 9 with a first jacket 911 to store camphene. Therefore, when the heated cooling medium is transported to the first jacket 911, the heat carried by the cooling medium can be transferred to the raw material storage tank 9 and can be used to melt the camphene, thereby realizing the recycling of the heat carried by the cooling medium. While improving the waste of heat energy, the energy consumption of the oil chiller 11 can also be reduced. In addition, the camphene can be easily transported to the reactor 1, so that the camphene can be evenly mixed with the methacrylic acid in the reactor 1. The reaction time of camphene and methacrylic acid can be shortened, the amount of by-products can be reduced, and the yield of isobornyl methacrylate can be improved.

[0044] Optionally, raw material storage tank 9 comprises tank body 91, the stirring mechanism 92 located in tank body 91, the first heating assembly 93 located at tank body 91 bottoms, the first temperature sensor 94 located in tank body 91, the first feed pipe 95 detachably connected with the discharge port of tank body 91 and the charging port of reactor 1, and a feed pump 96 located on the first feed pipe 95. When feed pump 96 works, the amphene in the tank body 91 is transported in the reactor 1 via the first feed pipe 95, and by the stirring action of stirring mechanism 92, amphene can be fully melted into liquid. The first temperature sensor 94 is used to monitor the temperature in the tank body 91. When the temperature in the tank body 91 is lower than the fusing point of amphene, it can further promote the temperature inside the tank body 91 by the first heating assembly 93, so that amphene is fully melted.

[0045] As an example, the first heating component 93 may be an electric heating tube.

[0046] Optionally, both the first heating box 2 and the second heating box 5 include a housing 21. A second jacket 211 is provided between the inner and outer walls of the housing 21. During operation, the reaction product is transported into the housing 21 via a pipeline, and high-temperature thermal oil can be introduced into the second jacket 211, thereby transferring heat to the interior of the housing 21 via the thermal oil, thereby heating the reaction product. Of course, the heating method is not limited to thermal oil heating. The reaction product can also be heated by installing a second heating assembly 22 composed of an electric heating pipe, etc., within the second jacket 211.

[0047] Optionally, when a second heating assembly 22 is installed in the second jacket 211, heat transfer oil that can be heated by the second heating assembly 22 is stored in the box body 21, and the first heating box 2 and the second heating box 5 both further include a second feed pipe 23 provided in the box body 21. The second feed pipe 23 is immersed in the heat transfer oil, and the feed end of the second feed pipe 23 is connected to the discharge port of the reactor 1 or the liquid discharge port of the first fractionating tower 3, and the discharge end of the second feed pipe 23 is connected to the liquid inlet of the first fractionating tower 3 or the liquid inlet of the second fractionating tower 6, so that the reaction products heated by the first heating box 2 and the second heating box 5 can be transported to the first fractionating tower 3 and the second fractionating tower 6, respectively.

[0048] Moreover, since the second feed pipe 23 is immersed in the heat transfer oil, after the heat transfer oil is heated by the second heating component 22, the reaction product in the second feed pipe 23 can fully exchange heat with the heat transfer oil, so that the reaction product can be effectively heated. When the reaction product is transported to the first distillation tower 3 and the second distillation tower 6, its temperature can evaporate the unreacted raw materials and methyl methacrylate.

[0049] Optionally, the second feed pipe 23 is arranged in an S shape in the box 21, thereby extending the transportation time of the reaction product in the box 21 and ensuring that when the reaction product is transported to the first distillation tower 3 and the second distillation tower 6, the temperature of the reaction product can evaporate the unreacted raw materials and methyl methacrylate.

[0050] Optionally, a second temperature sensor 12 is inserted into the housing 21, and a third temperature sensor 13 is installed at the discharge end of the second feed pipe 23. The second temperature sensor 12 is used to monitor the temperature of the heat transfer oil within the housing 21, while the third temperature sensor 13 is used to monitor the temperature of the material discharged from the second feed pipe 23. By obtaining the monitoring results of the second and third temperature sensors 12, 13, production personnel can understand the degree of heating of the reaction products and guide production.

[0051] Optionally, the fractionation and purification device of isobornyl methacrylate also includes a raw material recovery tank 14. Raw material recovery tank 14 is connected with the first condenser 4 so that it can collect unreacted methacrylic acid and amphene. The top of raw material recovery tank 14 is also provided with a polymerization inhibitor addition port 141. By the polymerization inhibitor addition port 141, a polymerization promoter can be added in the raw material recovery tank 14 to avoid methacrylic acid and amphene from polymerization reaction, thereby affecting the recycling of raw materials.

[0052] Furthermore, a discharge pipe 15 is connected to the bottom of the raw material recovery tank 14, which is equipped with a discharge control valve 16. When discharge control valve 16 is open, staff can sample the mixed liquid in the raw material recovery tank 14 to test its acidity and thereby determine the methacrylic acid and camphene content.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fractionation and purification device for isobornyl methacrylate, comprising a first heating box (2) connected to a discharge port of a reaction kettle (1), a first fractionation tower (3) connected to the first heating box (2), a first condenser (4) connected to the first fractionation tower (3), a second heating box (5) connected to the first fractionation tower (3), a second fractionation tower (6) connected to the second heating box (5), and a second condenser (7) connected to the second fractionation tower (6); characterized in that: Also includes: A circulating oil inlet pipeline (8), wherein the circulating oil inlet pipeline (8) is used to circulate a cooling medium into the first condenser (4) and the second condenser (7), wherein the cooling medium is heat transfer oil; A raw material storage tank (9), wherein a first jacket (911) connected to a circulating oil inlet pipeline (8) is provided between an inner wall and an outer wall of the raw material storage tank (9), and camphene is stored in the raw material storage tank (9); a circulating oil outlet pipeline (10), the circulating oil outlet pipeline (10) being used to deliver the cooling medium from the first condenser (4) and the second condenser (7), and the circulating oil outlet pipeline (10) being in communication with the first jacket (911); An oil cooler (11) is provided on the circulating oil inlet pipeline (8).

2. The fractionation and purification device for isobornyl methacrylate according to claim 1, characterized in that: The raw material storage tank (9) comprises a tank body (91), a stirring mechanism (92) arranged in the tank body (91), a first heating component (93) arranged at the bottom of the tank body (91), a first temperature sensor (94) inserted in the tank body (91), a first material delivery pipe (95) connected to the discharge port of the tank body (91) and the reactor (1), and a material delivery pump (96) arranged on the first material delivery pipe (95).

3. The fractionation and purification device for isobornyl methacrylate according to claim 1, characterized in that: The first heating box (2) and the second heating box (5) both comprise a box body (21), and a second jacket (211) is provided between the inner wall and the outer wall of the box body (21).

4. The fractionation and purification device for isobornyl methacrylate according to claim 3, characterized in that: The first heating box (2) and the second heating box (5) both further include: A second heating component (22), wherein the second heating component (22) is disposed in the second jacket (211).

5. The fractionation and purification device for isobornyl methacrylate according to claim 4, characterized in that: The box (21) stores heat transfer oil; the first heating box (2) and the second heating box (5) both further include a second feed pipe (23); the second feed pipe (23) is arranged in the box (21), and the feed end of the second feed pipe (23) is connected to the discharge port of the reaction kettle (1) or the liquid discharge port of the first fractionating tower (3), and the discharge end of the second feed pipe (23) is connected to the liquid inlet of the first fractionating tower (3) or the liquid inlet of the second fractionating tower (6).

6. The fractionation and purification device for isobornyl methacrylate according to claim 5, characterized in that: The second material delivery pipe (23) is arranged in an S shape inside the box (21).

7. The fractionation and purification device for isobornyl methacrylate according to claim 5, characterized in that: A second temperature sensor (12) is inserted into the box (21), and a third temperature sensor (13) is provided at the discharge end of the second conveying pipe (23).

8. The fractionation and purification device for isobornyl methacrylate according to claim 1, characterized in that: The invention also includes a raw material recovery tank (14), wherein the raw material recovery tank (14) is connected to the first condenser (4), and the top of the raw material recovery tank (14) is provided with an inhibitor addition port (141), and the bottom of the raw material recovery tank (14) is connected to a discharge pipe (15), and the discharge pipe (15) is provided with a discharge control valve (16).

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