CN204865829U - Cinnamic acid accuse temperature condensation reaction cauldron - Google Patents

Abstract

The utility model relates to a cinnamaldehyde temperature-controlled condensation reaction kettle, which comprises a kettle body, a feed inlet and a sealing valve are arranged on the top of the kettle body, and a disc heat exchanger with an inlet and an outlet extending to the outside of the kettle body is arranged inside the kettle body; There is a stirring device inside the body, and the stirring device includes a stirring shaft passing through the central axis of the disc heat exchanger and three stirring paddles arranged on the stirring shaft, wherein the first stirring paddle is located above the disc heat exchanger, and the second The stirring paddle is located below the first stirring paddle and passes through the central axis of the disc heat exchanger, and the third stirring paddle is located below the disc heat exchanger. One end of the kettle body passes through the top of the kettle body, and the other end is connected to the gas-liquid The feed pipe of the distributor, the gas-liquid distributor passes through the central axis of the disc heat exchanger and is arranged parallel to the second stirring paddle; the bottom of the kettle body is provided with a discharge port. The device of the utility model has the advantages of rapid and uniform mixing of reactants, uniform and controllable heating of materials, real-time monitoring and adjustment of pressure and temperature in the kettle body, and precise control of the reaction process.

Description

A kind of cinnamaldehyde temperature control condensation reaction kettle

technical field

The utility model relates to chemical equipment, in particular to a cinnamaldehyde temperature-controlled condensation reaction kettle.

Background technique

Reactor is a reaction vessel widely used in many important fields such as chemical industry, medicine, food, etc., and is often used to produce various chemical products. In the process of reactor operation, it is often necessary to add a variety of raw materials and react in a certain temperature range to obtain products. However, due to the complexity of chemical reactions, the components of each raw material may undergo condensation or polymerization reactions, or oxidize and deteriorate at high temperatures. And other factors are very unfavorable to process control. Especially in the production process of cinnamaldehyde, benzaldehyde and acetaldehyde need to undergo condensation reaction at a certain temperature in an alkaline water environment, but after adding raw materials respectively, condensation reactions often occur respectively, which increases the amount of raw materials and reduces the yield , At the same time, inhomogeneous heating during the reaction process, and the difficulty of free temperature control are also aspects that are difficult to grasp in the cinnamaldehyde production process.

Utility model content

The purpose of the utility model is to provide a cinnamaldehyde temperature-controlled condensation reaction kettle in order to overcome the above-mentioned defects in the prior art.

A cinnamaldehyde temperature-controlled condensation reaction kettle proposed by the utility model comprises a kettle body, and a feed inlet and a sealing valve are respectively arranged on both sides of the top of the kettle body, and a disc heat exchanger is arranged inside the kettle body, so that The inlet and outlet of the disc heat exchanger extend out of the kettle body through the kettle wall; a motor is arranged on the top of the kettle body, and the output shaft of the motor extends to the inside of the kettle body to connect with a stirring device, and the stirring device includes a through The stirring shaft of the central axis of the disc heat exchanger and the three stirring paddles arranged on the stirring shaft, wherein the first stirring paddle is located above the disc heat exchanger, and the second stirring paddle is located below the first stirring paddle and passes through The central axis of the disc heat exchanger, the second stirring paddle is a vertical rectangular blade, the length of the rectangular blade is greater than the height of the disc heat exchanger, and the third stirring paddle is located below the disc heat exchanger; A feeding pipeline is arranged in the kettle body, and one end of the feeding pipeline extends out of the kettle body through a sealing valve provided on the top of the kettle body, and the other end of the feeding pipeline is connected with a gas-liquid distributor, and the gas-liquid distributor It passes through the central axis of the disc heat exchanger and is arranged in parallel with the second stirring paddle; the bottom of the kettle body is provided with a discharge port.

In the above technical solution, the diameters of the first stirring paddle and the third stirring paddle are larger than the disc diameter of the disc heat exchanger.

In the above technical solution, the gas-liquid distributor is a vertically placed hollow plate, and several through holes are evenly opened on the hollow plate.

In the above technical solution, a temperature sensor and a barometer are arranged in the kettle body, the temperature sensor is arranged in parallel with the plate heat exchanger, the barometer is arranged on the top of the kettle body, the temperature sensor and the The barometers are respectively connected with the display devices arranged on the outer wall of the kettle.

In the above technical solution, a flow meter is connected to the end of the feeding pipeline protruding from the kettle body, and a solenoid valve is also arranged on the feeding pipeline between the flow meter and the sealing valve.

The temperature-controlled condensation reaction kettle of cinnamaldehyde provided by the utility model can make the reaction materials rapidly and fully through the arrangement of a disc heat exchanger in the kettle body and the feed of the distributor extending into the central axis of the disc heat exchanger. Mix well, and at the same time, the first stirring paddle set above the plate heat exchanger, the second stirring paddle passing through the axis of the plate heat exchanger and the third stirring paddle below the plate heat exchanger can feed the The material and the original material in the kettle body are fully mixed, and evenly stirred around the disc heat exchanger to ensure that the material is fully mixed and heated without overheating due to poor flow, resulting in unnecessary condensation or polymerization Reaction; the diameters of the first stirring paddle and the third stirring paddle are greater than the disc diameter of the disc heat exchanger, and cooperate with the second stirring paddle arranged on the central axis of the disc heat exchanger to make the material flow between the first stirrer and the third stirring paddle. The circulating flow near the disc heat exchanger between the third agitators is fully heated; at the same time, the barometer and temperature sensor arranged in parallel on the top of the kettle body and the disc heat exchanger can monitor the pressure and temperature in the kettle body in real time. The display device on the outer wall of the kettle is convenient for adjusting the heat source in the disc heat exchanger and regulating the pressure inside the kettle; the addition of the reaction materials can be precisely controlled through the solenoid valve and the flow meter, and the process of the reaction can be controlled.

To sum up, the cinnamaldehyde temperature-controlled condensation reaction kettle of the present invention has the advantages of rapid and uniform mixing of reactants, uniform and controllable heating of materials, and real-time monitoring and adjustment of reaction pressure and temperature in the kettle.

Description of drawings

Fig. 1 is the structural representation of the cinnamaldehyde temperature-controlled condensation reactor in the utility model.

In the figure: 1-kettle body; 2-disk heat exchanger; 3-inlet;

4-exit; 5-motor; 6-stirring shaft;

7-the first stirring paddle; 8-the second stirring paddle; 9-the third stirring paddle;

10-feeding pipeline; 11-feed inlet; 12-sealing valve;

13-gas-liquid distributor; 14-outlet; 15-through hole;

16-temperature sensor; 17-barometer; 18-display device;

19-solenoid valve; 20-flow meter.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, a kind of cinnamaldehyde temperature-controlled condensation reaction kettle proposed in the utility model comprises a kettle body 1, and both sides of the top of the kettle body 1 are respectively provided with a feed port 11 and a sealing valve 12, and the interior of the kettle body 1 is provided with There is a disc heat exchanger 2, the inlet 3 and outlet 4 of the disc heat exchanger 2 extend out of the kettle body 1 through the wall of the kettle; the top of the kettle body 1 is provided with a motor 5, and the output shaft of the motor 5 extends to the kettle body 1 is internally connected with a stirring device, the stirring device includes a stirring shaft 6 passing through the central axis of the disc heat exchanger 2 and three stirring paddles arranged on the stirring shaft 6, wherein the first stirring paddle 7 is located on the disc heat exchanger 2 Above, the second stirring paddle 8 is located below the first stirring paddle and passes through the central axis of the disc heat exchanger 2, the second stirring paddle 8 is a vertical rectangular blade, and the length of the rectangular blade is greater than that of the disc heat exchanger 2 height, the third stirring paddle 9 is located below the disc heat exchanger 2; the kettle body 1 is provided with a feeding pipeline 10, and one end of the feeding pipeline 10 extends out of the kettle body through the sealing valve 12 provided on the top of the kettle body 1 , the other end of the feeding pipeline 10 is connected with a gas-liquid distributor 13, the gas-liquid distributor 13 passes through the central axis of the disc heat exchanger 2 and is arranged parallel to the second stirring paddle 8; the bottom of the kettle body 1 is provided with a discharge port 14. The diameters of the first stirring paddle 7 and the third stirring paddle 9 are larger than the diameter of the disc heat exchanger 2; the gas-liquid distributor 13 is a hollow plate placed vertically, and several through holes 15 are evenly opened on the hollow plate; The kettle body 1 is provided with a temperature sensor 16 and a barometer 17, the temperature sensor 16 is arranged in parallel with the disc heat exchanger 2, the barometer 17 is arranged on the top of the kettle body 1, the temperature sensor 16 and the barometer 17 are respectively connected with the set The display device 18 on the outer wall of the still body 1 is connected. A flow meter 20 is connected to the end of the feeding pipeline 10 protruding from the kettle body 1 , and a solenoid valve 19 is also arranged on the feeding pipeline 10 between the flow meter 20 and the sealing valve 12 .

In the utility model, the working process of the cinnamaldehyde temperature-controlled condensation reaction kettle is as follows: first, benzaldehyde, liquid alkali and water are passed into the kettle body 1 through the feed port 11, the motor 5 is turned on, the stirring device is turned on, and the heat exchanger is fed to the disc heat exchanger at the same time. 2. A heat source with a specific temperature is introduced into the inlet to heat the material, and the temperature and air pressure in the kettle are monitored in real time by connecting the display device 18 with the temperature sensor 16 and the barometer 17. When the predetermined temperature is reached, the solenoid valve 19 is added and acetaldehyde is introduced. Steam or liquid enters around the disc heat exchanger 2 through the gas-liquid distributor 13, and reacts after being stirred by the first stirring paddle 7, the second stirring paddle 8 and the third stirring paddle 9 and the surrounding benzaldehyde , when the flow meter 20 shows that the flow rate reaches the amount of acetaldehyde, close the solenoid valve 19, and open the discharge port 14 after waiting for the reaction to be completed, so that the reaction product enters the rectification process. During the reaction process, the solenoid valve 19 can be closed and opened at any time to control The degree of reaction is carried out, and the reaction process is precisely controlled. As the temperature is higher or lower, the solenoid valve 19 can be closed to stop feeding acetaldehyde, and the solenoid valve 19 can be opened to continue the reaction after the temperature recovers.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. a cinnamic acid temperature control condensation reaction still, it is characterized in that: comprise kettle (1), described kettle (1) both sides, top are respectively arranged with charging aperture (11) and seal valve (12), described kettle (1) inside is provided with disc heat interchanger (2), and import (3) and the outlet (4) of described disc heat interchanger (2) reach kettle (1) outward through still wall, described kettle (1) top is provided with motor (5), the output shaft of motor (5) extends to kettle (1) and is internally connected with agitating device, described agitating device comprises shaft (6) through disc heat interchanger (2) axis and three paddles being arranged on shaft (6), wherein the first paddle (7) is positioned at the top of disc heat interchanger (2), second paddle (8) be positioned at the first paddle below and through the axis of disc heat interchanger (2), described second paddle (8) is vertical rectangle shaped blades, the length of described rectangle shaped blades is greater than the height of disc heat interchanger (2), 3rd paddle (9) is positioned at the below of disc heat interchanger (2), feeding lines (10) is provided with in described kettle (1), the seal valve (12) that described feeding lines (10) one end is arranged through kettle (1) top stretches out kettle, described feeding lines (10) other end is connected with gas-liquid distributor (13), described gas-liquid distributor (13) through described disc heat interchanger (2) axis and be arranged in parallel with described second paddle (8), described kettle (1) bottom is provided with discharging opening (14).

2. cinnamic acid temperature control condensation reaction still according to claim 1, is characterized in that: the diameter of described first paddle (7) and the 3rd paddle (9) is greater than the diameter of disc heat interchanger (2).

3. cinnamic acid temperature control condensation reaction still according to claim 2, is characterized in that: described gas-liquid distributor (13) is the hollow sheeting vertically placed, and described hollow sheeting evenly has several through holes (15).

4. cinnamic acid temperature control condensation reaction still according to claim 3, it is characterized in that: in described kettle (1), be provided with temperature inductor (16) and barometer (17), described temperature inductor (16) and described disc heat interchanger (2) are arranged in parallel, described barometer (17) is arranged on kettle (1) top, and described temperature inductor (16) and barometer (17) are connected with the display unit (18) being arranged on kettle (1) outer wall respectively.

5. cinnamic acid temperature control condensation reaction still according to claim 4, it is characterized in that: one end that described feeding lines (10) stretches out kettle (1) is connected with flowmeter (20), the feeding lines (10) between described flowmeter (20) and seal valve (12) is also provided with magnetic valve (19).