Continuous reaction device for alkaline hydrolysis in production of propionyl triketone

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses a continuous reaction device for alkaline hydrolysis in propionyl triketone production, which comprises a reaction device main body provided with a temperature control jacket, and the top of the main body is provided with a first feed port and a second feed port; a discharge hole is formed in the bottom of the main body; a screen is arranged at the inner end of the discharge hole; a plurality of isolation plates are arranged in the inner cavity of the main body; two ends of each isolation plate are spaced from the side wall of the main body; one end of the isolation plate is a non-closed end, but the upper and lower isolation plates form closed ends at the end part, and the other end of the isolation plate and the end part of the upper and lower isolation plates on the other layer form a closed end; all the closed ends form a closed inner cavity, and the closed inner cavity is filled with small filler balls; a temperature sensor is also arranged in the closed inner cavity; and the metering pump, the flow meter and the temperature sensor are electrically connected to an automatic control system. The device is simple in structure, capable of realizing continuous production, uniform in alkaline hydrolysis reaction, high in production efficiency and stable in product quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, specifically to a continuous reaction device for the alkaline hydrolysis of propionyltrione production. Background Technology

[0002] In the production of propionyl glycerol, alkaline hydrolysis is a crucial step. Traditional reaction apparatus involves cooling the rearranged product, then adding liquid alkali dropwise during cooling to initiate alkaline hydrolysis. After the hydrolyzed material is allowed to settle and separate into layers, the upper layer is the regenerated solvent layer, and the lower layer is the propionyl glycerol alkaline hydrolysis solution. This reaction, carried out in an alkaline hydrolysis reactor, can only be performed intermittently, preventing continuous production and resulting in low efficiency. Furthermore, current technology struggles to ensure thorough and uniform mixing of materials, easily leading to uneven reaction and affecting product quality and yield. Moreover, product quality fluctuates significantly between batches due to variations in key reaction parameters such as material flow rate, flow rate, and residence time. Therefore, these shortcomings need to be overcome in actual production. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a continuous reaction device for the alkaline hydrolysis of propionyl glycerol, which overcomes the technical defects in the prior art, has a simple structure, can realize continuous production, has uniform alkaline hydrolysis reaction, high production efficiency, and stable product quality.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A continuous reaction apparatus for the alkaline hydrolysis of propionyl tricone includes a main body equipped with a temperature-controlled jacket. The top of the main body has a first inlet and a second inlet, which are connected to a first raw material storage tank and a second raw material storage tank respectively via pipes, a metering pump, and a flow meter. The bottom of the main body has an outlet, and a screen is installed at the side of the outlet located within the main body's inner cavity. The inner cavity of the main body is provided with several partition plates from top to bottom, with both ends of each partition plate having a distance from the side wall of the main body. One end of each partition plate is non-closed, but the upper and lower partition plates form a closed end at that end. The other end of the partition plate... The upper and lower partition plates of each layer form closed ends; the uppermost partition plate near the inlet forms a closed end with the inner side of the upper part of the main body, and the end of the second partition plate away from the inlet forms a closed end with the inner side of the upper part of the main body; the lowest partition plate near the outlet forms a closed end with the bottom of the main body, and the end of the penultimate partition plate away from the outlet forms a closed end with the bottom of the main body; all closed ends constitute a closed inner cavity, which is filled with packing balls; a temperature sensor is also installed in the closed inner cavity; the metering pump, flow meter and temperature sensor are all electrically connected to the automatic control system.

[0006] Preferably, the temperature control jacket is provided with a temperature control medium inlet and a temperature control medium outlet. The temperature control medium inlet is connected to the temperature control medium storage tank through a pipeline, a flow meter and a metering pump. The temperature control medium outlet is connected to the temperature control medium collection tank through a pipeline. The flow meter and the metering pump are both electrically connected to the automatic control system.

[0007] Preferably, the isolation plate has 11 layers.

[0008] Preferably, the filler spheres are made of polymer resin, have a rough surface, and are coated with a catalyst layer. This satisfies the requirements for reactions that require a catalyst.

[0009] Preferably, the diameter of the filler balls is 0.5 to 5.5 mm.

[0010] Preferably, the mesh size of the screen is smaller than the diameter of the filler balls.

[0011] Preferably, the metering pump is model GM0090TP, manufactured by Binqi Environmental Protection Technology; the flow meter is model Jiewo Flow Meter MFBLUGB01511BY1, manufactured by Kaifeng Baite Flow Meter Co., Ltd.; and the temperature sensor is model GWEP-T2-CTWY, manufactured by Shandong Great Wall Automation Equipment Co., Ltd.

[0012] Preferably, the automatic control system is a DCS automatic control system.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] This utility model's metering pump can deliver different materials into the reactor according to a set flow rate; the flow meter can monitor the material's flow rate and volume in real time, providing data support for precise control of the reaction process; the temperature sensor can detect the reaction temperature in real time, providing a basis for controlling the flow rate of the temperature-controlled medium, thus keeping the reaction temperature constant; the packing balls can increase the contact area between the material and the packing balls, especially when the packing balls are coated with a catalyst, which can further improve mixing and reaction efficiency, accelerate the reaction process, reduce reaction time, and improve production efficiency; the screen can prevent the packing balls from falling out of the discharge port.

[0015] In summary, this invention has a simple structure, enables continuous production, ensures uniform alkaline hydrolysis, has high production efficiency, and provides stable product quality. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0017] In the diagram, 1 is the temperature control jacket; 2 is the main body; 3 is the screen; 4 is the isolation plate; and 5 is the packing balls. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1

[0020] like Figure 1 As shown, a continuous reaction apparatus for the alkaline hydrolysis of propionyl trione includes a reaction body 2 equipped with a temperature control jacket 1. The top of the body 2 has a first inlet (not shown) and a second inlet (not shown), which are connected to a first raw material storage tank (not shown) and a second raw material storage tank (not shown) respectively via pipes (not shown), a metering pump (not shown), and a flow meter (not shown). The bottom of the body 2 has an outlet (not shown), and a screen 3 is located at the side of the inner cavity of the body. The inner cavity of the body 2 has several isolation plates 4 arranged from top to bottom, with both ends of the isolation plates 4 having a distance from the side wall of the body 2. One end of each isolation plate 4 is a non-closed end (not shown), but the upper and lower isolation plates 4 are located at this end. A closed end (not shown) is formed. The other end of the isolation plate 4 is closed with the upper and lower isolation plates 4 that are one layer apart. The uppermost isolation plate 4 near the feed inlet forms a closed end with the upper inner side of the main body 2. The end of the second layer isolation plate 4 away from the feed inlet forms a closed end with the upper inner side of the main body 2. The lowest layer isolation plate 4 near the discharge outlet forms a closed end with the bottom of the main body 2. The end of the penultimate layer isolation plate 4 away from the discharge outlet forms a closed end with the bottom of the main body 2. All closed ends constitute a closed inner cavity (not shown). The closed inner cavity is filled with packing balls 5. A temperature sensor (not shown) is also provided in the closed inner cavity. The metering pump, flow meter and temperature sensor are all electrically connected to the automatic control system (not shown).

[0021] In actual production, the packing balls 5 are first loaded. As needed, the packing balls 5 without attached catalyst are mixed with water and fed into the main body 2 of the reaction unit through either the first or second inlet. Water flows out from the outlet at the bottom of the main body 2. Because there is a screen 3 at the outlet, the packing balls 5 are intercepted in the sealed inner cavity of the main body 2. After the packing balls 5 are loaded, feeding begins. The metering pump and flow meter are turned on, and two materials, A (triketone rearrangement) and B (alkali solution), are input according to the set flow rates. The materials flow from top to bottom in the closed inner cavity and react. When flowing through the packing balls 5, they collide and mix, thus ensuring thorough mixing and a uniform reaction. During the reaction, the metering pump is controlled by the automatic control system to ensure the material flow rate is at the set speed, allowing the reaction liquid sufficient residence time in the sealed inner cavity of the main body 2 (the standard setting is 0.5 hours). After the reaction is complete, the material gradually flows to the outlet and flows out, where samples are taken for tracking. Qualified material proceeds to the next process. If the material is not up to standard, it means that the material has not stayed in the main body 2 for a sufficient time. Reduce the feed rate of the flow pump until the material meets the standard. This will allow for continuous production.

[0022] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A continuous reaction apparatus for the alkaline hydrolysis of propionyl trione, characterized in that, The apparatus includes a main body equipped with a temperature-controlled jacket. The top of the main body has a first inlet and a second inlet, which are connected to a first raw material storage tank and a second raw material storage tank respectively via pipes, a metering pump, and a flow meter. The bottom of the main body has an outlet, and a screen is installed at the side of the outlet located within the main body's inner cavity. The inner cavity of the main body is provided with several partition plates from top to bottom, with both ends of each partition plate having a distance from the side wall of the main body. One end of each partition plate is open, but the upper and lower partition plates form a closed end at that end. The other end of each partition plate is separated from the upper and lower partition plates by one layer. The isolation plates of the part are closed at one end; the uppermost isolation plate near the feed inlet forms a closed end with the inner side of the upper part of the main body, and the other end of the second isolation plate away from the feed inlet forms a closed end with the inner side of the upper part of the main body; the lowest isolation plate near the discharge outlet forms a closed end with the bottom of the main body, and the other end of the second-to-last isolation plate away from the discharge outlet forms a closed end with the bottom of the main body; all closed ends constitute a closed inner cavity, which is filled with packing balls; a temperature sensor is also provided in the closed inner cavity; the metering pump, flow meter and temperature sensor are all electrically connected to the automatic control system.

2. The continuous reaction apparatus for the alkaline hydrolysis of propionyl trione according to claim 1, characterized in that, The temperature control jacket is equipped with a temperature control medium inlet and a temperature control medium outlet. The temperature control medium inlet is connected to the temperature control medium storage tank through a pipeline, a flow meter and a metering pump. The temperature control medium outlet is connected to the temperature control medium collection tank through a pipeline. The flow meter and the metering pump are both electrically connected to the automatic control system.

3. The continuous reaction apparatus for the alkaline hydrolysis of propionyl trione according to claim 1, characterized in that, The isolation panel has 11 layers.

4. The continuous reaction apparatus for the alkaline hydrolysis of propionyl trione according to claim 1, characterized in that, The diameter of the filler balls is 0.5 to 5.5 mm.

5. The continuous reaction apparatus for the alkaline hydrolysis of propionyl trione according to claim 1, characterized in that, The mesh size of the sieve is smaller than the diameter of the filler balls.

6. The continuous reaction apparatus for the alkaline hydrolysis of propionyl trione according to claim 1, characterized in that, The automatic control system is a DCS automatic control system.

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