Feeding device for polymerization reaction of polymerized rosin
Through the design of the weighing module and annular coil, the quantitative and uniform dropping of concentrated sulfuric acid is achieved, which solves the problem of uneven dropping addition of concentrated sulfuric acid in polymer rosin production, and improves product quality and conversion rate.
Patent Information
- Application Number
- CN202422549157.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-21
AI Technical Summary
In the prior art, concentrated sulfuric acid is added dropwise unevenly during the production process of polymerized rosin, resulting in isomerization incomplete or coking, affecting product quality and conversion rate.
The weighing module and annular coil structure are adopted. The weight of the concentrated sulfuric acid storage tank is monitored in real time through the weighing module, combined with the solenoid valve control, and the concentrated sulfuric acid is uniformly dispersed through the annular coil to ensure full contact with the solution.
It improves the accuracy and product quality of the polymerization reaction, avoids local coking, and improves product conversion rate and color stability.
Smart Images
Figure CN223233775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polymerized rosin production, in particular to a feeding device for polymerized rosin polymerization reaction. Background Art
[0002] Polymerized rosin is a pale yellow, transparent solid rosin dimer resin made from gum rosin through acid isomerization and cationic polymerization. The most advanced production process, both domestically and internationally, uses 200# solvent oil as the solvent and a sulfuric acid-zinc chloride polymerization process. The gum rosin is dissolved in 200# solvent, isomerized by the addition of concentrated sulfuric acid, and then catalyzed by the addition of zinc chloride. The process then proceeds through hydrolysis and washing, followed by distillation and desolventization (vacuum removal of oligomers), and finally packaging and granulation (the final product).
[0003] During the isomerization process by adding concentrated sulfuric acid dropwise, concentrated sulfuric acid is directly added dropwise from a straight pipe inserted into the polymerization reactor via a flow meter from a concentrated sulfuric acid storage tank. The amount of addition is measured by the addition time, which results in a large subjective error. If too little concentrated sulfuric acid is added, the isomerization will be incomplete and the product conversion rate will be low. If too much concentrated sulfuric acid is added, the product acid value will be high and the product will be unqualified. Moreover, if concentrated sulfuric acid is added dropwise directly from a pipe inserted into the reactor, the addition will be too fast to disperse the product. Coupled with the exothermic reaction of the isomerization, local materials are easily burned and carbonized, resulting in a dark product color and a large amount of black particulate impurities generated by coking, which seriously affects the product quality and affects the use.
[0004] Solving the above problems is the key factor to improve the quality and application scope of polymerized rosin products. Utility Model Content
[0005] In order to overcome the shortcomings of uneven introduction and unclear measurement of concentrated sulfuric acid in the concentrated sulfuric acid isomerization process of polymerized rosin production, the utility model provides a feeding device for the polymerization reaction of polymerized rosin.
[0006] A feeding device for a polymerized rosin polymerization reaction comprises a reactor, a mounting frame, a concentrated sulfuric acid storage tank, a pipeline and a transition storage tank. The mounting frame is fixedly connected to the upper part of the reactor, the concentrated sulfuric acid storage tank is located in the mounting frame, the upper end of the concentrated sulfuric acid storage tank is connected to a liquid infusion pipe, the concentrated sulfuric acid storage tank is connected to the transition storage tank via a pipeline, the transition storage tank is fixed by the mounting frame and the bottom end is connected to the reactor, and the feeding device also comprises a weighing module and an annular coil. The weighing module is arranged in the mounting frame, the weighing module supports and weighs the concentrated sulfuric acid storage tank, the lower end of the transition storage tank is connected to the annular coil, the annular coil is located in the upper part of the reactor cavity, and the annular coil is provided with a liquid outlet.
[0007] In a preferred embodiment of the present invention, a first solenoid valve is provided between the concentrated sulfuric acid storage tank and the transition storage tank, and a second solenoid valve is provided between the transition storage tank and the annular coil.
[0008] In a preferred embodiment of the present invention, a warning light is further included, and the warning light is arranged on the mounting frame.
[0009] In a preferred embodiment of the present invention, a maintenance ladder is further included, and the maintenance ladder is arranged on the side of the reactor.
[0010] In a preferred embodiment of the present invention, a display is further included. The display is located on the side of the mounting frame and is electrically connected to the weighing module.
[0011] In a preferred embodiment of the present invention, a tool box is further included, and the mounting frame is provided with the tool box.
[0012] Compared with the prior art, the utility model has the following advantages: a weighing module is added to the bottom of the concentrated sulfuric acid storage tank, and its weight is intuitively displayed through a display, ensuring accurate measurement of the concentrated sulfuric acid required for each batch of reaction; a transition storage tank is added to quantitatively store the concentrated sulfuric acid required for each batch of reaction, ensuring safe and quantitative dropwise addition, intuitive and transparent, and can be added after the addition is completed; the concentrated sulfuric acid straight pipe is changed into an annular coil, and the concentrated sulfuric acid is dispersedly added through the liquid outlet at the bottom of the coil, so that the concentrated sulfuric acid can fully contact with the solution raw materials, thereby improving the polymerization reaction effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting bracket and the display of the present invention.
[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the transition storage tank and the concentrated sulfuric acid storage tank of the utility model.
[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the pipeline and the liquid outlet of the utility model.
[0017] The components in the attached figure are marked as follows: 1. Reactor, 2. Mounting frame, 3. Infusion tube, 4. Weighing module, 5. Concentrated sulfuric acid storage tank, 6. Pipeline, 7. Transition storage tank, 8. First solenoid valve, 9. Second solenoid valve, 10. Ring coil, 11. Liquid outlet, 13. Warning light, 14. Maintenance ladder, 15. Display, 16. Tool box. DETAILED DESCRIPTION
[0018] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those skilled in the art will recognize that terms such as "above," "below," "upwardly," and "downwardly" are used to describe the drawings and are not intended to limit the scope of the present invention as defined by the appended claims. Numerical designations such as "first" and "second" are merely illustrative and are not intended to limit the scope of the present invention in any way.
[0019] Example: A feeding device for polymerized rosin polymerization reaction, such as Figure 1-Figure 4 As shown, it includes a reactor 1, a mounting frame 2, a concentrated sulfuric acid storage tank 5, a pipeline 6 and a transition storage tank 7. A maintenance ladder 14 is set on the side of the reactor 1. The maintenance ladder 14 is set to facilitate the staff to perform subsequent maintenance on the device. A tool box 16 is configured on the mounting frame 2. The tool box 16 has built-in maintenance tools. The mounting frame 2 is fixed to the upper part of the reactor 1. The warning light 13 is set on the mounting frame 2. The concentrated sulfuric acid storage tank 5 is located in the mounting frame 2. The upper end of the concentrated sulfuric acid storage tank 5 is connected to the infusion pipe 3. The concentrated sulfuric acid storage tank 5 is connected to the transition storage tank 7 through the pipeline 6. The concentrated sulfuric acid storage tank 5 and the transition storage tank 7 is provided with a first solenoid valve 8, the transition storage tank 7 is fixed by the mounting frame 2 and the bottom end is connected to the reactor 1, a second solenoid valve 9 is provided between the transition storage tank 7 and the annular coil 10. It also includes a weighing module 4 and an annular coil 10. The weighing module 4 is arranged in the mounting frame 2, and the weighing module supports and weighs the concentrated sulfuric acid storage tank 5. The display 15 is located on the side of the mounting frame 2, and the display 15 is electrically connected to the weighing module 4. The lower end of the transition storage tank 7 is connected to the annular coil 10, which is located at the upper part of the inner cavity of the reactor 1, and the annular coil 10 is provided with a liquid outlet 11.
[0020] Working principle: The weighing module 4 is composed of a support and a sensor. The support supports the concentrated sulfuric acid storage tank 5. The sensor can adopt the high-precision measurement module of the QLWW-12-0.5kg model. The sensor directly contacts the bottom of the concentrated sulfuric acid storage tank 5 and detects its weight immediately. The weight signal is transmitted to the display 15 in the form of an electrical signal and is visually displayed through digitization. Therefore, the specific operation method of this device is to dissolve the gum rosin into a solution in the reactor 1, and introduce the concentrated sulfuric acid into the concentrated sulfuric acid storage tank 5 through the infusion tube 3. During the reaction, the warning light 13 lights up to prevent the staff from entering by mistake and causing harm. When concentrated sulfuric acid needs to be added to the reactor 1 for polymerization reaction, the first solenoid valve 8 can be opened, and the concentrated sulfuric acid will be discharged from the concentrated sulfuric acid storage tank 5. Tank 5 enters the transition storage tank 7. Since the weighing module 4 continuously detects the weight of the concentrated sulfuric acid storage tank 5 and feeds back to the display 15, the dosage of concentrated sulfuric acid introduced into the transition storage tank 7 can be calculated according to the weight difference. After the specified weight of concentrated sulfuric acid is added, the first solenoid valve 8 is closed to achieve the effect of quantitatively taking concentrated sulfuric acid. The second solenoid valve 9 is opened, and the quantitative concentrated sulfuric acid in the transition storage tank 7 will be guided to the annular coil 10. The bottom of the annular coil 10 is provided with a liquid outlet 11 with a diameter of 1 mm at a spacing of 1 cm. The concentrated sulfuric acid will be evenly discharged from the liquid outlet 11, so that the concentrated sulfuric acid can fully contact with the solution raw material, improve the polymerization reaction effect, and avoid the situation where the existing concentrated sulfuric acid is unevenly added and the solution raw material is locally burned.
[0021] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A feeding device for a polymerized rosin polymerization reaction, comprising a reactor (1), a mounting frame (2), a concentrated sulfuric acid storage tank (5), a pipeline (6) and a transition tank (7), wherein the mounting frame (2) is fixedly connected to the upper portion of the reactor (1), the concentrated sulfuric acid storage tank (5) is located within the mounting frame (2), the upper end of the concentrated sulfuric acid storage tank (5) is connected to a liquid infusion pipe (3), the concentrated sulfuric acid storage tank (5) is connected to the transition tank (7) via a pipeline (6), the transition tank (7) is fixed by the mounting frame (2) and the bottom end is connected to the reactor (1), and is characterized in that: The invention also includes a weighing module (4) and an annular coil (10). The weighing module (4) is arranged in the mounting frame (2). The weighing module supports and weighs the concentrated sulfuric acid storage tank (5). The lower end of the transition storage tank (7) is connected to the annular coil (10). The annular coil (10) is located at the upper part of the inner cavity of the reactor (1). The annular coil (10) is provided with a liquid outlet (11).
2. The feeding device for polymerized rosin polymerization according to claim 1, characterized in that: A first electromagnetic valve (8) is provided between the concentrated sulfuric acid storage tank (5) and the transition storage tank (7), and a second electromagnetic valve (9) is provided between the transition storage tank (7) and the annular coil (10).
3. The feeding device for polymerized rosin polymerization according to claim 2, characterized in that: It also includes a warning light (13), which is arranged on the mounting frame (2).
4. The feeding device for polymerized rosin polymerization according to claim 3, wherein: It also includes a maintenance ladder (14), which is arranged on the side of the reactor (1).
5. The feeding device for polymerized rosin polymerization according to claim 4, characterized in that: It also includes a display (15), which is located on the side of the mounting frame (2) and is electrically connected to the weighing module (4).
6. A feeding device for polymerized rosin polymerization according to claim 5, characterized in that: The utility model also comprises a tool box (16), and the tool box (16) is configured on the mounting frame (2).