Dimethylaminoethyl acrylate temperature change reactor
The temperature-varying reactor design, which combines built-in blade heating and external heating, solves the problem of low heating and cooling efficiency in the production of dimethylaminoethyl acrylate, achieving efficient energy utilization and a rapid reaction process.
Patent Information
- Application Number
- CN202520452445.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-14
AI Technical Summary
The existing production process of dimethylaminoethyl acrylate suffers from low heating and cooling efficiency and high energy consumption, especially the problem of excessive water consumption or low efficiency during the cooling process.
It adopts a combination of built-in blade heating and external heating. The blades rotate to drive the heating rod to internally heat the material, and the reactor is cooled by air using cooling gas. Combined with the air inlet pipe design to prevent material from entering and the automatic adjustment baffle to achieve efficient heating and cooling.
It improves heating efficiency, promotes rapid reaction, and has higher cooling efficiency while saving energy. It avoids the extra heating energy consumption caused by excessively low temperatures and achieves a balance between heating and cooling.
Smart Images
Figure CN223861858U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to production equipment technical field especially relates to a dimethylaminoethyl acrylate temperature change reactor. BACKGROUND
[0002] Dimethylaminoethyl acrylate is a multifunctional active monomer, and the quaternary ammonium salt or acid salt of dimethylaminoethyl acrylate is copolymerized with monomers such as acrylamide to obtain a cationic polymer flocculant, which can adsorb and destroy bacterial cell membranes, inhibit the growth of microorganisms, reduce the generation of odors, and be used for the surface material of sanitary napkins.
[0003] At present, most of dimethylaminoethyl acrylate is produced by ester exchange method through methyl acrylate, dimethylaminoethanol, catalyst and composite polymerization inhibitor in the main reactor at 80-120 DEG C. After the main reactor completes the first reaction and discharges, the raw materials need to be cooled to about 50-80 DEG C before being put in again, so as not to decompose or polymerize the raw materials. The energy consumption of heating and cooling is large, and the thermal efficiency is low, especially the cooling, if water cooling is used, the cooling effect is good but the water consumption is large, and if natural cooling is used, the efficiency is too low.
[0004] Therefore, in view of the above problems, a dimethylaminoethyl acrylate temperature change reactor is needed. UTILITY MODEL CONTENT
[0005] (I) Technical problem to be solved
[0006] The technical problem to be solved by the utility model is to balance the heating and cooling efficiency and energy consumption of the reactor.
[0007] (II) Technical scheme
[0008] In order to solve the above technical problems, the utility model provides a dimethylaminoethyl acrylate temperature change reactor, which comprises a tank body, an air inlet pipe, a rotating shaft, blades and a baffle, methyl acrylate, dimethylaminoethanol and catalyst are injected into the tank body, the air inlet pipe is fixedly connected to one side of the bottom of the tank body to introduce cooling gas into the tank body after one reaction, the rotating shaft is rotatably connected to the top of the tank body, a plurality of heatable blades are fixedly connected to the rotating shaft at intervals, and the rotating shaft rotates to drive the blades to stir and heat the materials in the tank body to promote the reaction; the baffle is hingedly connected to the top of the end of the air inlet pipe extending into the tank body, and the baffle naturally droops to completely cover the air inlet pipe to prevent the materials from entering the air inlet pipe.
[0009] As a further description of the utility model, preferably, one side of the air inlet pipe connected with the tank body is a horizontal straight pipe, and the other side of the air inlet pipe is an inclined upward straight pipe.
[0010] As a further illustration of the utility model, preferably, the horizontal straight pipe at the bottom of the gas inlet pipe outside the tank body is fixedly connected with a deslagging pipe to separate the material entering the gas inlet pipe from the gas inlet pipe.
[0011] As a further illustration of the utility model, preferably, the baffle is disc-shaped, and the bottom of the contact surface of the baffle and the gas inlet pipe is fixedly connected with a weight to increase the weight of the bottom of the baffle.
[0012] As a further illustration of the utility model, preferably, the blade is in a long strip-shaped inclined structure, and a cylindrical heating rod is fixedly connected to the middle of the blade, and the heating rod generates a temperature of 120 DEG C at most after being electrified.
[0013] As a further illustration of the utility model, preferably, the rotating shaft is hollow inside and passes through a columnar conductive rod, and the conductive rod is electrically connected with the heating rod to conduct electricity for the heating rod.
[0014] As a further illustration of the utility model, preferably, the top of the rotating shaft extends out of the tank body and is rotationally connected with a motor, the motor is fixedly connected with the tank body, the motor is connected with a connector at the joint end with the rotating shaft, the bottom of the inner cavity of the connector is connected with the conductive rod and rotates with the rotating shaft, the top of the inner cavity of the connector is connected with a cable and is fixedly connected with the connector body, and the top of the inner cavity of the connector is rotationally connected with the bottom of the inner cavity.
[0015] As a further illustration of the utility model, preferably, a wire tube is fixedly connected outside the connector, the cable is inserted into the wire tube and is connected with an external power supply and a controller of the tank body to heat the heating rod.
[0016] As a further illustration of the utility model, preferably, a feeding pipe is fixedly connected to one side of the top of the tank body to supply material into the tank body, and a discharging pipe is fixedly connected to the bottom of the tank body to guide the reaction product out of the tank body.
[0017] As a further illustration of the utility model, preferably, a heating strip is fixedly connected outside the tank body in a ring shape to heat the tank body from the outside.
[0018] (Three) beneficial effects
[0019] The above technical scheme of the utility model has the following advantages:
[0020] The utility model heats the raw material from the inside through the blade, combines the original external heating of the reactor, improves the heating efficiency, and promotes the rapid progress of the reaction. After the reaction, the air cooling method is used, which has higher cooling efficiency than the traditional external water cooling, and the high air flow rate can quickly take away the heat, and at the same time, a short time cooling can avoid the temperature from being too low to cause higher heating energy consumption, effectively balancing the energy consumption and efficiency of the reactor heating and cooling. DRAWINGS
[0021] Figure 1is the assembly effect drawing of the utility model;
[0022] Figure 2 is the side view of the utility model;
[0023] Figure 3 is the section view of the utility model;
[0024] Figure 4 is Figure 3 is the enlarged view of A in the middle;
[0025] Figure 5 is the baffle installation effect drawing of the utility model.
[0026] In the drawing: 1, tank body; 11, feed pipe; 2, air inlet pipe; 21, slag discharge pipe; 3, rotating shaft; 31, motor; 32, wire pipe; 33, connector; 4, blade; 41, heating rod; 5, baffle; 51, weight block; 6, discharge pipe. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.
[0028] A kind of dimethylaminoethyl acrylate temperature variable reactor, combine Figure 3 、 Figure 4 Including tank body 1, air inlet pipe 2, rotating shaft 3, blade 4 and baffle 5, air inlet pipe 2 is fixedly connected in tank body 1 bottom side, rotating shaft 3 is rotatably connected in tank body 1 top, several blades 4 are fixedly connected on rotating shaft 3 with interval, baffle 5 top is hinged in the top of one end of air inlet pipe 2 that extends into tank body 1.
[0029] Combine Figure 1 、 Figure 2The tank body 1 is a cylindrical shell, one side of the top of the tank body 1 is provided with a feed pipe 11 to inject methyl acrylate, dimethyl ethanolamine, catalyst and polymerization inhibitor and other raw materials into the tank body 1, the bottom of the tank body 1 is fixedly connected with a discharge pipe 6 to guide the reaction product out of the tank body 1, and a heating strip is fixedly connected outside the tank body 1 in a ring shape to heat the inside of the tank body 1 from the outside to provide the required temperature for the ester exchange reaction. The gas inlet pipe 2 is an L-shaped pipeline, one side of the gas inlet pipe 2 connected with the tank body 1 is a horizontal straight pipe, and the other side is an inclined upward straight pipe, and the included angle between the two straight pipes is obtuse. Through the above design, the installation of the gas inlet pipe 2 is facilitated, and the problem of difficult cleaning caused by the entry of raw materials into the gas inlet pipe 2 too deep is avoided. The gas inlet pipe 2 is fixedly connected with a slag discharge pipe 21 at the bottom of the horizontal straight pipe outside the tank body 1, which can remove the materials entering the gas inlet pipe 2 from the gas inlet pipe 2 by air extraction.
[0030] In combination Figure 4 , Figure 5 The baffle 5 is disc-shaped, and the bottom of the contact surface of the baffle 5 and the gas inlet pipe 2 is fixedly connected with a weight block 51 to increase the weight of the bottom of the baffle 5. When it is necessary to cool the tank body 1, the gas inlet pipe 2 is opened and cooling air is pumped in, the cooling air blows up the baffle 5 into the tank body 1 to cool the tank body 1, and then flows out through the gas outlet pipe through the three-way valve on the feed pipe 11, which not only can cool the tank body 1 but also can cool the part of the feed pipe 11 close to the tank body 1, thereby improving the cooling efficiency. After cooling, the gas inlet pipe 2 is closed, and the baffle 5 naturally droops under the action of the weight block 51 and is attached to the pipe opening of the gas inlet pipe 2, without the need for additional control devices to achieve automatic opening and closing. Although the baffle 5 blocks the raw materials, it is not excluded that some materials will flow into the gas inlet pipe 2 through the joint between the baffle 5 and the gas inlet pipe 2 during stirring reaction, so that the materials entering the gas inlet pipe 2 are removed from the gas inlet pipe 2 by extraction during the reaction to avoid blockage, and the gas inlet pipe 2 forms a negative pressure environment to make the baffle 5 tightly attached to the gas inlet pipe 2 to prevent too much material from entering the gas inlet pipe 2, achieving two purposes at once.
[0031] In combination Figure 2 , Figure 3The rotation shaft 3 is a cylindrical structure, the rotation shaft 3 extends out of the tank body 1 at the top and is rotationally connected with a motor 31, the motor 31 is fixedly connected with the tank body 1, and the rotation shaft 3 is driven to rotate by the motor 31. The blade 4 is a long strip inclined structure, the middle of the blade 4 is fixedly connected with a cylindrical heating rod 41, and the heating rod 41 generates a temperature of 120 DEG C at most after being electrified. The blade 4 is arranged to generate heat, and the heating component outside the tank body 1 is combined to heat the material, the heat conduction effect is improved, and then the reaction can be faster. The rotation shaft 3 is hollow and passes through a cylindrical conductive rod, the bottom of the conductive rod is electrically connected with the heating rod 41 to conduct electricity for the heating rod 41, the conductive rod is a solid structure and can rotate with the rotation shaft 3 to stabilize the conduction, so that the problem of knotting caused by using a flexible cable is avoided. The top of the conductive rod extends to the top of the rotation shaft 3, the motor 31 is connected with a connector 33 at the joint end, the inner cavity bottom of the connector 33 is connected with the conductive rod and rotates with the rotation shaft 3, the inner cavity top of the connector 33 is connected with a cable and is fixedly connected with the connector 33 body and does not move, and the inner cavity top of the connector 33 is rotationally connected with the inner cavity bottom. The connector 33 is fixedly connected with a wire tube 32, the cable is arranged in the wire tube 32 and is connected with a power supply and a controller outside the tank body 1, and stable power supply can be realized for the rotating heating rod 41 through the above arrangement, so that the raw material can be continuously heated to enable the reaction to continuously proceed.
[0032] In summary, the blade 4 heats the raw material from the inside, the heating efficiency is improved in combination with the original external heating of the reactor, and the reaction is promoted to proceed quickly. After the reaction, the air cooling mode is used, compared with the traditional external water cooling, the cooling efficiency is higher, the air flow rate is high, the heat can be taken away faster, and the short time cooling can avoid that the temperature is too low to cause higher heating energy consumption, and the energy consumption and efficiency of the reactor heating and cooling are effectively balanced.
[0033] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A dimethylaminoethyl acrylate temperature-sensitive reactor, characterized in that: The device includes a tank (1), an inlet pipe (2), a rotating shaft (3), blades (4), and a baffle (5). The tank (1) is filled with methyl acrylate, dimethyl ethanolamine, and a catalyst. The inlet pipe (2) is fixed to one side of the bottom of the tank (1) to introduce cooling gas into the tank (1) after one round of reaction. The rotating shaft (3) is rotatably connected to the top of the tank (1). Several heatable blades (4) are fixed at intervals on the rotating shaft (3). The rotation of the rotating shaft (3) drives the blades (4) to stir and heat the material in the tank to promote the reaction. The top of the baffle (5) is hinged to the top of one end of the inlet pipe (2) that extends into the tank (1). The baffle (5) hangs down naturally to completely cover the inlet pipe (2) to prevent the material from entering the inlet pipe (2).
2. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 1, characterized in that: The air inlet pipe (2) is connected to the tank body (1) on one side by a horizontal straight pipe, and the air inlet pipe (2) on the other side by an upward-sloping straight pipe.
3. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 2, characterized in that: The air inlet pipe (2) is located at the bottom of a horizontal straight pipe outside the tank body (1) and a slag discharge pipe (21) is fixed to it to draw the material entering the air inlet pipe (2) away from the air inlet pipe (2).
4. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 3, characterized in that: The baffle (5) is disc-shaped, and a weight (51) is fixedly connected to the bottom of the contact surface between the baffle (5) and the air intake pipe (2) to lift the weight of the bottom of the baffle (5).
5. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 4, characterized in that: The blade (4) is a long, sloping structure. A cylindrical heating rod (41) is fixed in the middle of the blade (4). The heating rod (41) generates a maximum temperature of 120°C after being powered on.
6. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 5, characterized in that: The shaft (3) is hollow inside and has a columnar conductive rod inserted through it. The conductive rod is electrically connected to the heating rod (41) so that the heating rod (41) can conduct electricity.
7. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 6, characterized in that: The top of the rotating shaft (3) extends out of the tank (1) and is rotatably connected to a motor (31). The motor (31) is fixedly connected to the tank (1). The end of the motor (31) connected to the rotating shaft (3) is connected to a connector (33). The bottom of the inner cavity of the connector (33) is connected to a conductive rod and rotates with the rotating shaft (3). The top of the inner cavity of the connector (33) is connected to a cable and fixed to the connector (33) body. The top and bottom of the inner cavity of the connector (33) are rotatably connected.
8. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 7, characterized in that: A conduit (32) is fixed to the outside of the connector (33). The cable passes through the conduit (32) and is connected to the external power supply and controller of the tank (1) to heat the heating rod (41).
9. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 8, characterized in that: A feed pipe (11) is fixedly connected to one side of the top of the tank (1) to supply material into the tank (1), and a discharge pipe (6) is fixedly connected to the bottom of the tank (1) to discharge the reaction product out of the tank (1).
10. The dimethylaminoethyl acrylate temperature-sensitive reactor according to claim 9, characterized in that: A heating strip is fixed in a ring around the outside of the tank (1) to heat the inside of the tank (1) from the outside.