Novel DOTP continuous distillation device

Abstract

The utility model discloses a novel DOTP continuous distillation device which comprises a bottom plate, a liquid collecting box arranged on one side of the top end of the bottom plate, a condensation tank arranged above the bottom plate on one side of the liquid collecting box, a plurality of second supporting legs arranged at the bottom end of the condensation tank, bottom ends of the second supporting legs connected with the top end of the bottom plate, and a distillation tank arranged above the bottom plate on one side of the condensation tank. First supporting legs are arranged on the two sides of the bottom end of the distillation retort, the bottom ends of the first supporting legs are fixedly connected with the top end of the bottom plate, a pressure gauge is installed at the upper end of the surface of the distillation retort, a distillation pipeline is arranged in the center of the top of the distillation retort, and the end, away from the distillation retort, of the distillation pipeline extends into the condensation tank and is provided with a condensation pipe. A circulating pump is mounted at the top end of the bottom plate between the condensation tank and the distillation tank. According to the utility model, not only is the distillation effect of the distillation device on DOTP in use guaranteed, but also the fusion rate of various raw materials of DOTP in the distillation retort is improved, and the condensation and collection efficiency of steam is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of DOTP production, in particular to a novel DOTP continuous distillation device. Background Art

[0002] DOTP is an excellent plasticizer with good electrical and thermal properties and low volatility. It is widely used in various products that require heat resistance and high insulation, such as cable materials and other volatile resistant PVC products. During the production and processing of DOTP, DOTP needs to be treated by distillation process. Therefore, it is particularly important to develop a new DOTP continuous distillation device.

[0003] A DOTP continuous distillation device with reference announcement number CN208065812U includes a distillation tower, a separator, a heater, a condenser and a collecting tank. The bottom of the distillation tower is connected to the separator through a pump, the separator is connected to the heater, the heater is connected to the top of the distillation tower, the upper part of the distillation tower is connected to the condenser, and the lower part of the condenser is connected to the collecting tank. The distillation device can be fed continuously, thereby improving production efficiency; the separator is used to centrifuge the crude product, and the residue is deposited at the bottom of the separator and can be discharged through a valve, thereby avoiding the disadvantage of inconvenient cleaning of the traditional distillation kettle. According to the above, although the distillation device can be well applied, it is usually not convenient to carry out continuous secondary distillation of the distilled DOTP, and it is difficult to ensure the distillation effect of DOTP, which needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a novel DOTP continuous distillation device to solve the problem that although the distillation device proposed in the above background technology can be well applied, it is usually not convenient to perform continuous secondary distillation of the distilled DOTP, and thus it is difficult to ensure the DOTP distillation effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel DOTP continuous distillation device, comprising a bottom plate, a liquid collecting box is provided on one side of the top of the bottom plate, a condensing tank is provided above the bottom plate on one side of the liquid collecting tank, a plurality of second legs are provided at the bottom end of the condensing tank, the bottom end of the second leg is connected to the top of the bottom plate, a distillation tank is provided above the bottom plate on one side of the condensing tank, first legs are provided on both sides of the bottom end of the distillation tank, the bottom end of the first leg is fixedly connected to the top of the bottom plate, a pressure gauge is installed on the upper end of the surface of the distillation tank, a distillation pipeline is provided at the center position of the top of the distillation tank, one end of the distillation pipeline away from the distillation tank extends to the inside of the condensing tank and is provided with a condensing tube, one end of the condensing tube away from the distillation pipeline extends to the outside of the condensing tank, a circulating pump is installed at the top of the bottom plate between the condensing tank and the distillation tank, one end of the circulating pump is installed with a first circulating pipe, one end of the first circulating pipe away from the circulating pump is connected to the outer wall of the liquid collecting tank, and the other end of the circulating pump is installed with a second circulating pipe, and one end of the second circulating pipe away from the circulating pump is connected to the outer wall of the upper end of the distillation tank.

[0006] Preferably, a carrier frame is provided at the bottom end of the distillation tank, and a driving gear is rotatably mounted at the center position of the bottom end of the carrier frame, so that the driven gear and the driving gear can be movably arranged through the arrangement of the carrier frame.

[0007] Preferably, heating tubes are installed on the inner walls of both sides of the distillation tank, and a temperature sensor is installed on the inner wall of the distillation tank between the heating tubes. The heating tubes are provided so as to heat and distill the DOTP raw material inside the distillation tank.

[0008] Preferably, driven gears are rotatably mounted on the bottom ends of the carrier frames on both sides of the driving gear, and the driven gears are meshed with the driving gears. The driven gears are meshed with the driving gears so that the driven gears are driven to rotate when the driving gears rotate.

[0009] Preferably, a motor is installed at the top of the bottom plate below the driving gear, and the top of the motor is connected to the bottom of the driving gear, so that the driving gear can be driven to rotate.

[0010] Preferably, a stirring shaft is provided at the center position of the top end of the driven gear, and the top end of the stirring shaft extends to the interior of the distillation tank and is provided with a stirring paddle, so that the DOTP raw material inside the distillation tank can be stirred.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the novel DOTP continuous distillation device not only ensures the distillation effect of DOTP when the distillation device is used, but also improves the dissolution rate between various DOTP raw materials inside the distillation tank, and ensures the condensation collection efficiency of steam;

[0012] By starting the circulation pump, the liquid collected after distillation in the collecting tank can be transported to the distillation tank through the first circulation pipe and the second circulation pipe for secondary distillation, so that the DOTP can be continuously distilled again when the distillation effect is not ideal, thereby ensuring the distillation effect of DOTP when the distillation device is used;

[0013] The driving gear is driven by the motor to rotate, so that the driving gear drives the driven gear to rotate in the opposite direction, so that the driven gear drives the stirring paddle inside the distillation tank to rotate through the stirring shaft, and the stirring paddle can stir various DOTP raw materials inside the distillation tank, thereby improving the dissolution rate between various DOTP raw materials inside the distillation tank;

[0014] By setting the condenser in a ring structure, when the steam generated by DOTP distillation inside the distillation tank flows into the condenser through the distillation pipe, the contact time between the steam and the condensing medium inside the condensation tank can be increased, and the steam can be efficiently condensed into liquid, thereby ensuring the condensation and collection efficiency of the steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the condensation tank of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the stirring paddle of the utility model when viewed from above.

[0019] In the figure: 1, bottom plate; 2, distillation tank; 201, pressure gauge; 3, first leg; 4, support frame; 5, distillation pipeline; 6, condensation tank; 7, second leg; 8, collecting tank; 9, circulation pump; 10, first circulation pipe; 11, second circulation pipe; 12, motor; 13, stirring shaft; 14, stirring paddle; 15, heating tube; 16, temperature sensor; 17, condensation tube; 18, driving gear; 19, driven gear. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides an embodiment: a novel DOTP continuous distillation device, comprising a bottom plate 1, a liquid collecting box 8 is provided on one side of the top of the bottom plate 1, a condensing tank 6 is provided above the bottom plate 1 on one side of the liquid collecting box 8, a plurality of second legs 7 are provided at the bottom end of the condensing tank 6, the bottom end of the second legs 7 is connected to the top of the bottom plate 1, a distillation tank 2 is provided above the bottom plate 1 on one side of the condensing tank 6, a supporting frame 4 is provided at the bottom end of the distillation tank 2, and a driving gear 18 is rotatably installed at the center position of the bottom end of the supporting frame 4;

[0022] When in use, the support frame 4 is arranged so as to movably place the driven gear 19 and the driving gear 18;

[0023] The bottom ends of the carrier frames 4 on both sides of the driving gear 18 are rotatably mounted with driven gears 19, and the driven gears 19 and the driving gears 18 are meshed with each other;

[0024] When in use, the driven gear 19 is meshed with the driving gear 18 so that the driven gear 19 is driven to rotate when the driving gear 18 rotates;

[0025] A motor 12 is installed at the top of the bottom plate 1 below the driving gear 18, and the top of the motor 12 is connected to the bottom of the driving gear 18;

[0026] When in use, the motor 12 is arranged to drive the driving gear 18 to rotate;

[0027] A stirring shaft 13 is provided at the center of the top of the driven gear 19. The top of the stirring shaft 13 extends to the interior of the distillation tank 2 and is provided with a stirring paddle 14.

[0028] When in use, the stirring paddle 14 is provided to stir the DOTP raw material inside the distillation tank 2;

[0029] Heating pipes 15 are installed on the inner walls of both sides of the distillation tank 2, and a temperature sensor 16 is installed on the inner wall of the distillation tank 2 between the heating pipes 15;

[0030] When in use, the heating tube 15 is provided to heat and distill the DOTP raw material inside the distillation tank 2;

[0031] A first leg 3 is provided on both sides of the bottom end of the distillation tank 2, and the bottom end of the first leg 3 is fixedly connected to the top of the bottom plate 1. A pressure gauge 201 is installed on the upper end of the surface of the distillation tank 2, and a distillation pipe 5 is provided at the center position of the top of the distillation tank 2. The end of the distillation pipe 5 away from the distillation tank 2 extends to the interior of the condensation tank 6 and is provided with a condenser 17. The end of the condenser 17 away from the distillation pipe 5 extends to the outside of the condensation tank 6. A circulation pump 9 is installed on the top of the bottom plate 1 between the condensation tank 6 and the distillation tank 2. A first circulation pipe 10 is installed at one end of the circulation pump 9. The end of the first circulation pipe 10 away from the circulation pump 9 is connected to the outer wall of the liquid collecting tank 8. A second circulation pipe 11 is installed on the other end of the circulation pump 9. The end of the second circulation pipe 11 away from the circulation pump 9 is connected to the outer wall of the upper end of the distillation tank 2.

[0032] When the embodiment of the present application is used, firstly, various DOTP raw materials are injected into the distillation tank 2, and the driving gear 18 is driven to rotate by the motor 12, so that the driving gear 18 drives the driven gear 19 to rotate in the opposite direction, so that the driven gear 19 drives the stirring paddle 14 located inside the distillation tank 2 to rotate through the stirring shaft 13, and the stirring paddle 14 can stir the various DOTP raw materials inside the distillation tank 2 to increase the dissolution rate between the various DOTP raw materials. Then, the DOTP raw materials inside the distillation tank 2 are heated by the heating tube 15, and the temperature sensor 16 monitors the temperature of the DOTP raw materials so as to adjust the temperature of the DOTP raw materials. The TP raw material is heated and distilled, and then the condenser 17 is arranged in an annular structure. When DOTP is distilled inside the distillation tank 2 to generate steam, the steam will flow into the condenser 17 through the distillation pipe 5, which can increase the contact time between the steam and the condensing medium inside the condensation tank 6, so as to quickly condense the steam into a liquid state for collection. Finally, by starting the circulation pump 9, the liquid collected after distillation in the collecting tank 8 can be transported to the distillation tank 2 for secondary distillation through the first circulation pipe 10 and the second circulation pipe 11, so that DOTP can be continuously distilled for the second time under the condition that the distillation effect is not ideal, thereby completing the use of the distillation device.

Claims

1. A novel DOTP continuous distillation apparatus, characterized in that: The invention comprises a bottom plate (1), a liquid collecting box (8) is provided on one side of the top of the bottom plate (1), a condensing tank (6) is provided above the bottom plate (1) on one side of the liquid collecting tank (8), a plurality of second legs (7) are provided at the bottom end of the condensing tank (6), the bottom ends of the second legs (7) are connected to the top of the bottom plate (1), a distillation tank (2) is provided above the bottom plate (1) on one side of the condensing tank (6), first legs (3) are provided on both sides of the bottom end of the distillation tank (2), the bottom ends of the first legs (3) are fixedly connected to the top of the bottom plate (1), a pressure gauge (201) is installed on the upper end of the surface of the distillation tank (2), and a distillation pipe (5) is provided at the center position of the top of the distillation tank (2). The end of the distillation pipe (5) away from the distillation tank (2) extends to the interior of the condensation tank (6) and is provided with a condensation pipe (17). The end of the condensation pipe (17) away from the distillation pipe (5) extends to the outside of the condensation tank (6). A circulation pump (9) is installed at the top of the bottom plate (1) between the condensation tank (6) and the distillation tank (2). A first circulation pipe (10) is installed at one end of the circulation pump (9). The end of the first circulation pipe (10) away from the circulation pump (9) is connected to the outer wall of the liquid collecting tank (8). The other end of the circulation pump (9) is installed with a second circulation pipe (11). The end of the second circulation pipe (11) away from the circulation pump (9) is connected to the outer wall of the upper end of the distillation tank (2).

2. A novel DOTP continuous distillation apparatus according to claim 1, characterized in that: A supporting frame (4) is provided at the bottom end of the distillation tank (2), and a driving gear (18) is rotatably mounted at the center position of the bottom end of the supporting frame (4).

3. A novel DOTP continuous distillation apparatus according to claim 1, characterized in that: Heating tubes (15) are installed on the inner walls of both sides of the distillation tank (2), and a temperature sensor (16) is installed on the inner wall of the distillation tank (2) between the heating tubes (15).

4. A novel DOTP continuous distillation apparatus according to claim 2, characterized in that: The bottom ends of the carrier frames (4) on both sides of the driving gear (18) are rotatably mounted with driven gears (19), and the driven gears (19) are meshed with the driving gear (18).

5. A novel DOTP continuous distillation apparatus according to claim 2, characterized in that: A motor (12) is installed at the top end of the bottom plate (1) below the driving gear (18), and the top end of the motor (12) is connected to the bottom end of the driving gear (18).

6. A novel DOTP continuous distillation apparatus according to claim 4, characterized in that: A stirring shaft (13) is provided at the center position of the top end of the driven gear (19); the top end of the stirring shaft (13) extends into the interior of the distillation tank (2) and is provided with a stirring paddle (14).

Images