Density detection device for oil-water two-phase reaction material

Abstract

The utility model discloses a density detection device for an oil-water two-phase reaction material, and relates to the technical field of chemical synthesis. The device comprises a density detection assembly which comprises a material extraction mechanism, an oil-water separation tank, an oil phase overflow pipe, a density detector and a water phase backflow assembly, and the feeding end of the material extraction mechanism is communicated with a discharging port through a conveying pipe; a feeding hole is formed in the middle of the side wall of the oil-water separation tank and is communicated with the discharging end of the material extraction mechanism through a conveying pipe; an oil phase outlet is formed in the upper portion of the side wall of the oil-water separation tank, a discharging port is formed in the bottom, one end of an oil phase overflow pipe communicates with the oil phase outlet, the other end of the oil phase overflow pipe communicates with an oil return port, and a density detector is installed on the oil phase overflow pipe. The other end of the water-phase backflow assembly is communicated with the material return opening; and a controller. The device can monitor the material condition in the reaction process in real time in the material reaction process in the reaction kettle, so that the product quality is prevented from being influenced by insufficient reaction or excessive reaction, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical synthesis, especially relates to a density detection device for oil-water two-phase reaction material. BACKGROUND

[0002] In chemical production, raw materials are often added for reaction, and oil phase or solid products are generated by reaction. The reaction degree needs to be determined by repeatedly detecting the reactants during the reaction process. The detection method generally adopts chemical titration or chromatographic analysis method. The detection often needs a certain time, which leads to the reduction of production efficiency.

[0003] At present, for the process with oil phase as the product, the product in the reaction kettle after synthesis is oil-water two-phase. When detecting the product in the reaction kettle, the industry usually adopts the method of taking out part of the material for static layering treatment. After layering, the upper oil phase of the reaction kettle is taken, and after the chromatographic or chemical analysis is qualified, the liquid separation aftertreatment is carried out. The detection time often needs 15-30 minutes. During this time, the material in the reaction kettle continues to react under the stirring of the stirring mechanism. There is a certain product decomposition due to excessive reaction, which leads to the reduction of production efficiency.

[0004] Therefore, how to provide a density detection device for oil-water two-phase reaction material without affecting the reaction production efficiency is a problem that the person skilled in the art needs to solve. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a density detection device for oil-water two-phase reaction material to at least solve the technical problems of long density detection time, product decomposition and reduction of production efficiency in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A density detection device for oil-water two-phase reaction material comprises:

[0008] A reaction kettle is provided with a return oil port and a return material port at the top, and a discharge port at the bottom;

[0009] A stirring mechanism is installed in the reaction kettle;

[0010] The density detection assembly comprises a material extraction mechanism, an oil-water separation tank, an oil phase overflow pipe, a density detector and a water phase backflow assembly, the feeding end of the material extraction mechanism is communicated with the discharge port through a feeding pipe, the oil-water separation tank is provided with an inlet in the middle of the side wall, the inlet is communicated with the discharge end of the material extraction mechanism through a feeding pipe, the oil-water separation tank is provided with an oil phase outlet in the upper part of the side wall and a discharge port in the bottom, one end of the oil phase overflow pipe is communicated with the oil phase outlet, the other end is communicated with the oil return port, the density detector is installed on the oil phase overflow pipe, one end of the water phase backflow assembly is communicated with the discharge port, and the other end is communicated with the material return port.

[0011] A controller is electrically connected with the stirring mechanism, the material extraction mechanism and the density detector.

[0012] The utility model discloses a beneficial effect can be realized: in the process of material stirring reaction in the reaction kettle, utilize material extraction mechanism and separate to the oil-water separation tank in the partial material extraction, because the oil-water density is different, and after separating, the oil phase material flows back to the reaction kettle through the upper oil phase overflow pipe, and detects at the density detector, and the lower water phase material returns to the reaction kettle through the water phase backflow assembly, in this circulation process, the material in the reaction kettle can continuously react under the stirring of the stirring mechanism, and the material condition in the reaction process can be monitored in real time during the reaction, prevents the reaction from being insufficient or excessive and influences the product quality, improves production efficiency.

[0013] Preferably, the stirring mechanism comprises a motor, a stirring rod and stirring blades, the motor is installed at the top center of the reaction kettle and is electrically connected with the controller, the stirring rod is arranged in the inner cavity of the reaction kettle along the axial direction of the reaction kettle and the top end of the stirring rod is fixedly connected with the output shaft of the motor, and the stirring blades are fixed to the lower end of the stirring rod.

[0014] Preferably, a discharge valve is arranged at the discharge port, and the discharge valve is electrically connected with the controller.

[0015] Preferably, the material extraction mechanism comprises an extraction pump and an extraction pump control valve, the extraction pump is installed on the feeding pipe between the discharge valve and the oil-water separation tank, the extraction pump control valve is installed on the feeding pipe between the discharge valve and the extraction pump, and the extraction pump and the extraction pump control valve are electrically connected with the controller.

[0016] Preferably, a discharging mechanism is further arranged, the discharging mechanism comprises a discharging pipe and a discharging valve, the inlet end of the discharging pipe is communicated with the discharge valve, and the discharging valve is installed on the discharging pipe.

[0017] Preferably, a U-shaped liquid storage pipe is arranged on the oil overflow pipe and communicates with the oil overflow pipe, and the density detector is arranged at the bottom of the U-shaped liquid storage pipe.

[0018] Preferably, the water phase reflux assembly comprises a reflux pipe and a balance hand valve, one end of the reflux pipe communicates with the discharging port, and the other end of the reflux pipe communicates with the material return port, and the balance hand valve is arranged on the reflux pipe.

[0019] Preferably, the oil-water separation tank is made of transparent material or is provided with a liquid level meter.

[0020] Preferably, a material return mechanism is further arranged, the material return mechanism comprises a material return pipe and a material return valve, one end of the material return pipe communicates with the reflux pipe close to the discharging port, and the other end of the material return pipe communicates with the reflux pipe close to the material return port, and the material return valve is arranged on the material return pipe and electrically connected with the controller.

[0021] Preferably, the lower end of the oil-water separation tank is in a conical structure.

[0022] Compared with the prior art, the density detection device for oil-water two-phase reaction material can realize real-time online detection of the material in the reaction kettle during continuous reaction of the material in the reaction kettle, avoids insufficient reaction or decomposition caused by excessive reaction, has high detection efficiency, and does not affect the production efficiency of the reaction kettle. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0024] Figure 1 A density detection device for oil-water two-phase reaction material provided by the present application is shown in the structural diagram.

[0025] In the figure: 1, reaction kettle, 2, stirring mechanism, 201, motor, 202, stirring rod, 203, stirring blade, 3, material extraction mechanism, 301, extraction pump, 302, extraction pump control valve, 4, oil-water separation tank, 5, oil overflow pipe, 6, density detector, 7, water phase reflux assembly, 701, reflux pipe, 702, balance hand valve, 8, discharge valve, 9, unloading mechanism, 901, unloading pipe, 902, unloading valve, 10, U-shaped liquid storage pipe, 11, material return mechanism, 1101, material return pipe, 1102, material return valve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Please refer to Figure 1 The embodiment of the present application discloses a density detection device for oil-water two-phase reaction material, comprising:

[0030] The reaction kettle 1 is provided with an oil return port and a material return port at the top, and a discharge port at the bottom;

[0031] The stirring mechanism 2 is installed in the reaction kettle 1;

[0032] The density detection assembly comprises a material extraction mechanism 3, an oil-water separation tank 4, an oil phase overflow pipe 5, a density detector 6 and a water phase reflux assembly 7. The feed end of the material extraction mechanism 3 is connected to the discharge port through a material conveying pipe. The oil-water separation tank 4 is provided with a feed inlet in the middle of the side wall, and the feed inlet is connected to the discharge end of the material extraction mechanism 3 through a material conveying pipe. The oil-water separation tank 4 is provided with an oil phase outlet at the upper part of the side wall and a discharge port at the bottom. One end of the oil phase overflow pipe 5 is connected to the oil phase outlet, and the other end is connected to the oil return port. The density detector 6 is installed on the oil phase overflow pipe 5. One end of the water phase reflux assembly 7 is connected to the discharge port, and the other end is connected to the material return port.

[0033] The controller is electrically connected to the stirring mechanism 2, the material extraction mechanism 3 and the density detector 6.

[0034] The density detector 6 is an integrated density and concentration detector with built-in density detection and concentration analysis.

[0035] Specifically, the stirring mechanism 2 includes a motor 201, a stirring rod 202, and a stirring blade 203. The motor 201 is mounted at the top center of the reactor 1 and is electrically connected to the controller. The stirring rod 202 is arranged in the inner cavity of the reactor 1 along the axis of the reactor 1, and its top end is fixedly connected to the output shaft of the motor 201. The stirring blade 203 is fixed to the lower end of the stirring rod 202. When the motor 201 is turned on, the stirring rod 202 rotates, driving the stirring blade 203 to rotate and stir the mixture.

[0036] Specifically, a discharge valve 8 is provided at the discharge port, and the discharge valve 8 is electrically connected to the controller, and the opening and closing of the discharge valve 8 is controlled by the controller.

[0037] Specifically, material extraction mechanism 3 includes an extraction pump 301 and an extraction pump control valve 302. Extraction pump 301 is installed on the feed pipe between discharge valve 8 and oil-water separator 4. Extraction pump control valve 302 is installed on the feed pipe between discharge valve 8 and extraction pump 301. Both extraction pump 301 and extraction pump control valve 302 are electrically connected to a controller. Extraction pump 301 extracts material and delivers it to oil-water separator 4 for separation.

[0038] Specifically, a discharge mechanism 9 is provided, comprising a discharge pipe 901 and a discharge valve 902. The feed end of discharge pipe 901 is connected to discharge valve 8, and discharge valve 902 is mounted on discharge pipe 901. When density detector 6 detects that the material density or concentration meets the standard, stirring and extraction pump 301 are stopped, and discharge valve 902 is opened to discharge the reacted product through discharge pipe 901 for subsequent use.

[0039] Specifically, a U-shaped liquid storage tube 10 is provided. The U-shaped liquid storage tube 10 is installed on the oil phase overflow tube 5 and is connected to the oil phase overflow tube 5. The density detector 6 is arranged at the bottom of the U-shaped liquid storage tube 10. The density detector 6 is installed at the lower part of the U-shaped tube of the overflow pipe, which can ensure that the detection liquid is full in the tube and improve the accuracy of the detection.

[0040] Specifically, the water phase reflux component 7 includes a reflux pipe 701 and a balancing hand valve 702. One end of the reflux pipe 701 is connected to the discharge port, and the other end is connected to the return port. The balancing hand valve 702 is installed on the reflux pipe 701. By adjusting the opening of the balancing hand valve 702, the liquid level in the oil-water separation tank 4 can be adjusted to ensure that the oil phase product can enter the oil phase overflow pipe 5.

[0041] More specifically, the oil-water separation tank 4 is made of transparent material or is provided with a liquid level gauge, so as to facilitate observation of the internal liquid level.

[0042] Specifically, the back feeding mechanism 11 is further provided, which comprises a back feeding pipe 1101 and a back feeding valve 1102. One end of the back feeding pipe 1101 is connected to the reflux pipe 701 near the discharge port, and the other end is connected to the reflux pipe 701 near the back feeding port. The back feeding valve 1102 is installed on the back feeding pipe 1101 and is electrically connected to the controller. After the reaction is completed, the back feeding valve 1102 is opened, so that the material in the oil-water separation tank 4 flows back into the reaction kettle 1 through the back feeding pipe 1101, and is discharged through the discharge pipe 901 at the bottom of the reaction kettle 1, so as to facilitate detection next time.

[0043] Specifically, the lower end of the oil-water separation tank 4 is in a conical structure, so as to facilitate complete discharge of the material.

[0044] Working principle:

[0045] The controller is used to pre-set the density and concentration of the reaction material, and to alarm when there is a downward trend. The reaction material is put into the reaction kettle 1, the stirring mechanism 2 is turned on, the discharge valve 8 and the production pump control valve 302 are opened, and the production pump 301 is started to pump the material into the oil-water separation tank 4 for static stratification treatment. The upper oil phase material is returned to the reaction kettle 1 through the oil phase overflow pipe 5, and the density detector 6 detects the density and concentration of the oil phase product. The lower water phase material is returned to the reaction kettle 1 through the reflux pipe 701. When the density and concentration detection reaches the set value or there is a downward trend, the production pump 301 and the production pump control valve 302 are closed, the back feeding valve 1102 is opened, the material in the oil-water separation tank 4 is returned to the reaction kettle 1 through the back feeding valve 1102, and the discharge valve 902 is opened to discharge the material in the reaction kettle 1.

[0046] During the stirring and reaction of the material in the reaction kettle 1, part of the material is taken out by the material production mechanism 3 to the oil-water separation tank 4 for separation. Due to the difference in density of oil and water, the oil phase material after separation flows back into the reaction kettle 1 through the upper oil phase overflow pipe 5 and is detected at the density detector 6. At the same time, the lower water phase material returns to the reaction kettle 1 through the water phase reflux assembly 7. In this circulation process, the material in the reaction kettle 1 can continuously react under the stirring of the stirring mechanism 2, and the material condition in the reaction process can be monitored in real time. The density data and the fitted concentration data are transmitted to the controller, and an alarm is given when the content reaches the set value or there is a downward trend. The stirring is paused to prevent the product from being decomposed under long-time stirring and reaction, and to ensure the production efficiency.

[0047] The various embodiments described in this specification are presented by way of example, and each embodiment is presented for the purpose of conveying the novelty and inventive aspects of the present patent application. For the embodiments disclosed, because they correspond to the methods disclosed in the embodiments, they are described more simply, and the relevant parts are referred to the method part description.

[0048] The above description of disclosed embodiments enables one of ordinary skill in the art to make and use the patent application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the patent application. Thus, the present patent application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A density detection device for oil-water two-phase reaction materials, characterized in that: include: A reactor (1), wherein the reactor (1) is provided with an oil return port and a material return port at the top and a material discharge port at the bottom; A stirring mechanism (2), wherein the stirring mechanism (2) is installed in the reactor (1); A density detection component, the density detection component includes a material extraction mechanism (3), an oil-water separation tank (4), an oil phase overflow pipe (5), a density detector (6) and a water phase reflux component (7), the feed end of the material extraction mechanism (3) is connected to the discharge port through a feed pipe; an inlet is provided in the middle of the side wall of the oil-water separation tank (4), and the inlet is connected to the discharge end of the material extraction mechanism (3) through a feed pipe; an oil phase outlet is provided on the upper part of the side wall of the oil-water separation tank (4), and a discharge port is provided at the bottom; one end of the oil phase overflow pipe (5) is connected to the oil phase outlet, and the other end is connected to the oil return port; the density detector (6) is installed on the oil phase overflow pipe (5); one end of the water phase reflux component (7) is connected to the discharge port, and the other end is connected to the return port; A controller is electrically connected to the stirring mechanism (2), the material extraction mechanism (3) and the density detector (6).

2. A density detection device for oil-water two-phase reaction materials according to claim 1, characterized in that: The stirring mechanism (2) comprises a motor (201), a stirring rod (202) and a stirring blade (203); the motor (201) is mounted at the top center of the reactor (1) and is electrically connected to the controller; the stirring rod (202) is arranged in the inner cavity of the reactor (1) along the axial direction of the reactor (1) and the top end of the stirring rod is fixedly connected to the output shaft of the motor (201); and the stirring blade (203) is fixed to the lower end of the stirring rod (202).

3. The density detection device for oil-water two-phase reaction materials according to claim 1, characterized in that: A discharge valve (8) is provided at the discharge port, and the discharge valve (8) is electrically connected to the controller.

4. A density detection device for oil-water two-phase reaction materials according to claim 3, characterized in that: The material extraction mechanism (3) includes an extraction pump (301) and an extraction pump control valve (302). The extraction pump (301) is installed on the material delivery pipe between the discharge valve (8) and the oil-water separation tank (4). The extraction pump control valve (302) is installed on the material delivery pipe between the discharge valve (8) and the extraction pump (301). The extraction pump (301) and the extraction pump control valve (302) are both electrically connected to the controller.

5. The density detection device for oil-water two-phase reaction materials according to claim 3, characterized in that: A discharge mechanism (9) is also provided, the discharge mechanism (9) comprising a discharge pipe (901) and a discharge valve (902), the feed end of the discharge pipe (901) being connected to the discharge valve (8), and the discharge valve (902) being installed on the discharge pipe (901).

6. The density detection device for oil-water two-phase reaction materials according to claim 1, characterized in that: A U-shaped liquid storage pipe (10) is also provided. The U-shaped liquid storage pipe (10) is installed on the oil phase overflow pipe (5) and is in communication with the oil phase overflow pipe (5). The density detector (6) is arranged at the bottom of the U-shaped liquid storage pipe (10).

7. The density detection device for oil-water two-phase reaction materials according to claim 1, characterized in that: The water phase reflux assembly (7) comprises a reflux pipe (701) and a balancing hand valve (702). One end of the reflux pipe (701) is connected to the discharge port, and the other end is connected to the return port. The balancing hand valve (702) is installed on the reflux pipe (701).

8. The density detection device for oil-water two-phase reaction materials according to claim 7, characterized in that: The oil-water separation tank (4) is made of a transparent material or a liquid level gauge is installed on the oil-water separation tank (4).

9. The density detection device for oil-water two-phase reaction materials according to claim 7, characterized in that: A material return mechanism (11) is also provided, the material return mechanism (11) comprising a material return pipe (1101) and a material return valve (1102), one end of the material return pipe (1101) being connected to the side of the return pipe (701) close to the discharge port, and the other end being connected to the side of the return pipe (701) close to the return port; the material return valve (1102) being installed on the material return pipe (1101) and electrically connected to the controller.

10. A density detection device for oil-water two-phase reaction materials according to any one of claims 1 to 9, characterized in that: The lower end of the oil-water separation tank (4) is in a conical structure.

Images