Additive flow control device for small-scale test and pilot-scale test

Abstract

The utility model discloses a small-scale test and pilot-scale test additive flow control device, and belongs to the technical field of polymer material polymerization. The device mainly comprises an additive raw material tank and a hopper arranged at the upper end of the additive raw material tank, the top of the additive raw material tank is communicated with a feeding pipe, a first valve is installed on the feeding pipe, the lower end of the additive raw material tank is communicated with a first discharging pipe, a flow adjusting valve and a flow meter are installed on the first discharging pipe, and the lower end of the first discharging pipe is communicated with a second discharging pipe. A second valve is mounted on the second discharging pipe, and a constant-pressure pipe is arranged on the additive raw material tank. According to the additive flow control device for the small-scale test and the pilot-scale test, the effects that technological parameters of small-scale and pilot-scale polymerization experiments are controllable, the experiment accuracy is improved, the experiment repeatability is enhanced, and the stability and the reliability of experiment results are improved are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of polymer material polymerization, and in particular to a flow control device for additives for small and medium tests. Background Art

[0002] In the process of polymer material synthesis, the copolymerization modification of polymers is involved, which needs to be modified by adding additives, three monomers or other polymers.

[0003] In the large-scale production process, the addition method and speed of these additives and other modifiers are relatively mature. However, the addition of additives in small-scale and pilot-scale reactions has problems such as simple operation, low experimental precision and poor repeatability.

[0004] Therefore, it is necessary to provide a small-scale pilot additive flow control device to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is to provide a small-scale and pilot-scale additive flow control device to achieve the effect of improving the accuracy and stability of small-scale and pilot-scale polymerization experiments.

[0007] The technical solution adopted by the present application to solve the technical problem is: a small-scale pilot additive flow control device, comprising:

[0008] An additive raw material tank for placing additives, wherein the additive raw material tank is connected to a feed pipe, a first valve is installed on the feed pipe, a first discharge pipe is connected to the bottom of the additive raw material tank, and a second discharge pipe is connected to the end of the first discharge pipe;

[0009] A hopper, arranged at the end of the feed pipe;

[0010] A flow regulating valve is installed on the first discharge pipe;

[0011] A flow meter is provided on the first discharge pipe;

[0012] A second valve is installed on the second discharge pipe;

[0013] Constant pressure tube, used to ensure that the pressure in the reactor is consistent with the pressure in the additive raw material tank.

[0014] Furthermore, one end of the constant pressure tube is connected to the upper end of the additive raw material tank, and the other end is connected to the second discharge pipe.

[0015] Furthermore, the flow regulating valve is used to control the flow rate of the additive entering the reactor.

[0016] Furthermore, the flow meter is used to measure the rate at which the additive passes through the first discharge pipe.

[0017] Furthermore, the first valve and the second valve are ball valves.

[0018] Furthermore, the constant pressure tube is connected to the upper end of the additive raw material tank in an inclined manner in the vertical direction.

[0019] Furthermore, the flow regulating valve is a needle valve.

[0020] Furthermore, a constant temperature component is provided at the lower end of the second discharge pipe.

[0021] Furthermore, the thermostatic assembly includes a thermostatic box connected to the end of the second discharge pipe, a heater and a temperature sensor are provided inside the thermostatic box, a temperature controller is installed outside the thermostatic box, the lower end of the thermostatic box is connected to the third discharge pipe, and a solenoid valve is installed on the third discharge pipe.

[0022] Furthermore, the temperature controller is electrically connected to the heater and the temperature sensor.

[0023] The beneficial effects of the present application are as follows: the present application provides a small-scale pilot test additive flow control device, which is used to accurately control the additive flow in polymer synthesis experiments, thereby achieving controllable process parameters for small-scale and pilot test polymerization experiments, improving experimental accuracy, enhancing experimental repeatability, and improving the stability and reliability of experimental results.

[0024] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0026] In the attached picture:

[0027] Figure 1 This is an overall schematic diagram of a pilot test additive flow control device in this application;

[0028] Figure 2 for Figure 1 The main view;

[0029] Figure 3 This is an overall schematic diagram of a second embodiment of a pilot test additive flow control device;

[0030] Figure 4 for Figure 3 The main view;

[0031] Figure 5 for Figure 3 Schematic diagram of the thermostatic component structure;

[0032] Among them, the reference numerals in the figure are:

[0033] 1. Additive raw material tank; 2. Feed pipe; 21. First valve; 3. Hopper; 4. First discharge pipe; 41. Flow regulating valve; 42. Flow meter; 5. Second discharge pipe; 51. Second valve; 6. Constant pressure pipe; 7. Constant temperature component; 71. Constant temperature box; 72. Heater; 73. Temperature sensor; 74. Temperature controller; 75. Third discharge pipe; 76. Solenoid valve. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] Embodiment 1:

[0037] like Figure 1 to Figure 2 As shown, the present application provides a small-scale and pilot-scale additive flow control device, including an additive raw material tank 1 and a hopper 3 arranged at the upper end of the additive raw material tank 1, the top of the additive raw material tank 1 is connected with a feed pipe 2, the feed pipe 2 is connected to the hopper 3, a first valve 21 is installed on the feed pipe 2, the lower end of the additive raw material tank 1 is connected with a first discharge pipe 4, the first discharge pipe 4 is installed with a flow regulating valve 41 and a flow meter 42, the flow regulating valve 41 is a needle valve, the lower end of the first discharge pipe 4 is connected with a second discharge pipe 5, the second discharge pipe 5 is installed with a second valve 51, the first valve 21 and the second valve 51 are ball valves, a constant pressure tube 6 is arranged on the additive raw material tank 1, one end of the constant pressure tube 6 is connected to the second discharge pipe 5, the constant pressure tube 6 is used to stabilize the pressure of the fluid, and the constant pressure tube 6 is connected to the upper end of the additive raw material tank 1 at an angle in the vertical direction, so that the additive cannot flow into the reactor through the constant pressure tube 6.

[0038] In this embodiment, the flow regulating valve 41 and the second valve 51 are first closed, and the first valve 21 is opened, and the additive is added from the hopper 3 to the additive raw material tank 1. When the second valve 51 is closed, the pressure in the reactor or the gas generated by the gasification of small molecular substances will not affect the additive addition process. After the additive is added, the first valve 21 is closed, and the second valve 51 can be slowly opened after the additive is added. The constant pressure tube 6 makes the pressure in the reactor consistent with the pressure in the additive raw material tank 1 when the second valve 51 is opened. The flow regulating valve 41 is slowly turned, and the flow meter 42 reading is observed. The additive is added to the reactor at a certain flow rate. When the second valve 51 is slowly opened, the pressure in the reactor is the same as the pressure in the additive raw material tank 1, so that the additive can be smoothly added to the reactor. In general, the additive addition process is carried out under normal pressure in the reactor. Due to the temperature, reaction intensity, etc., small molecular substances will be vaporized and evaporated in the reactor, making the additive addition not smooth. The constant pressure tube 6 can well solve this temperature problem. Through the design of this structure, the addition of additives can be completed under a certain pressure, further ensuring the accuracy and stability of small-scale and pilot polymer experiments.

[0039] Embodiment 2:

[0040] Combination Figures 3 to 5 , which is different from the first embodiment, a thermostatic component 7 is provided at the lower end of the second discharge pipe 5, and the thermostatic component 7 is used to control the temperature of the additive. The thermostatic component 7 includes a thermostatic box 71 connected to the second discharge pipe 5, and a heater 72 is provided inside the thermostatic box 71, and the heater 72 is used to heat the additive. A temperature sensor 73 is provided inside the thermostatic box 71, and the temperature sensor 73 is used to detect the temperature of the additive. A temperature controller 74 is installed outside the thermostatic box 71, and the temperature controller 74 is electrically connected to the heater 72 and the temperature sensor 73. The lower end of the thermostatic box 71 is connected to a third discharge pipe 75, and a solenoid valve 76 is installed on the third discharge pipe 75.

[0041] In this embodiment, after the additive is in the additive raw material tank 1, the second valve 51 is opened and the flow regulating valve 41 is slowly rotated to allow the additive in the additive raw material tank 1 to enter the constant temperature box 71, and the flow regulating valve 41 is appropriately adjusted according to the flow meter 42 to add the additive into the constant temperature box 71 at a certain flow rate. Then, the temperature of the additive is detected by the temperature sensor 73 and transmitted to the temperature controller 74. The heater 72 is controlled by the temperature controller 74 to heat the additive so that the additive and the internal temperature of the reactor reach a constant temperature effect. Then, the solenoid valve 76 is controlled to open so that the additive in the constant temperature box 71 is added to the reactor through the third discharge pipe 75, thereby ensuring that the additive can be stably added to the reactor at a constant temperature, avoiding the influence of temperature changes on the reaction process, thereby improving the reaction efficiency and product quality.

[0042] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pilot test additive flow control device, characterized in that: include: An additive raw material tank for placing additives, wherein the additive raw material tank is connected to a feed pipe, a first valve is installed on the feed pipe, a first discharge pipe is connected to the bottom of the additive raw material tank, and a second discharge pipe is connected to the end of the first discharge pipe; A hopper, arranged at the end of the feed pipe; A flow regulating valve is installed on the first discharge pipe; A flow meter is provided on the first discharge pipe; A second valve is installed on the second discharge pipe; Constant pressure tube, used to ensure that the pressure in the reactor is consistent with the pressure in the additive raw material tank.

2. A pilot test additive flow control device according to claim 1, characterized in that: One end of the constant pressure tube is connected to the upper end of the additive raw material tank, and the other end is connected to the second discharge pipe.

3. A small-scale pilot additive flow control device according to claim 1, characterized in that: The first valve and the second valve are ball valves.

4. The device for controlling the flow rate of additives for small and medium tests according to claim 1, characterized in that: The constant pressure pipe is connected to the upper end of the additive raw material tank in an inclined manner in the vertical direction.

5. The device for controlling the flow rate of additives for small and medium tests according to claim 1, characterized in that: The flow regulating valve is a needle valve.

6. The device for controlling the flow rate of additives for small-scale and pilot tests according to claim 1, characterized in that: A constant temperature component is arranged at the lower end of the second discharge pipe.

7. A pilot test additive flow control device according to claim 6, characterized in that: The thermostatic assembly includes a thermostatic box connected to the end of the second discharge pipe, a heater and a temperature sensor are provided inside the thermostatic box, a temperature controller is installed outside the thermostatic box, the lower end of the thermostatic box is connected to the third discharge pipe, and a solenoid valve is installed on the third discharge pipe.

8. The device for controlling the flow rate of additives for small-scale and pilot tests according to claim 7, characterized in that: The temperature controller is electrically connected to the heater and the temperature sensor.

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