Heating system for feeding glue solution of high impact polystyrene feeding system

Abstract

The utility model relates to the technical field of high impact polystyrene production lines, in particular to a heating system for feeding glue solution of a high impact polystyrene feeding system, which comprises a first preheater, a second preheater, a mixer, a prepolymerization reaction kettle and a temperature control mechanism, the first preheater and the second preheater are used for heating a glue solution which is about to enter the prepolymerization reaction kettle, and the temperature control mechanism is used for controlling the working states of the first preheater and the second preheater so as to keep the glue solution in the prepolymerization reaction kettle in a constant-temperature state. According to the utility model, different glue solutions are heated to different temperatures through the first preheater and the second preheater, and the glue solutions at different temperatures are proportionally mixed together through the mixer, so that the glue solution of which the concentration and the temperature reach the standard is obtained, and the problem that the glue solution is preheated to gel in the production process of high-impact polystyrene is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of a high-impact polystyrene production line, in particular to a heating system for a feeding glue liquid of a high-impact polystyrene feeding system. Background Art

[0002] The 6%-10% rubber-styrene solution is a high-viscosity styrene solution. The 6%-10% styrene solution is a mixture of rubber liquid and high-purity styrene solution. When heated in a heat exchanger, the heat transfer coefficient of the 6%-10% styrene solution is low, and a high heating temperature difference is required to heat the 6%-10% styrene solution to the reaction temperature of 80-90 degrees Celsius required for the reactor feed.

[0003] At the same time, due to the high viscosity and low heat transfer efficiency of the glue liquid, in order to reach the predetermined feed temperature, the glue liquid must be heated by a heat exchanger with a higher temperature hot oil. During heating, there is a temperature gradient between the reactor wall and the glue liquid at different positions in the heat exchanger. Part of the glue liquid will come into contact with the higher temperature wall and reach the temperature of gelation, causing the heated glue liquid to polymerize on the wall and produce gel. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to overcome the shortcomings of the prior art and design a heating system for the glue liquid in the high-impact polystyrene feeding system. In order to eliminate the above situation, the temperature of the glue liquid heating and the temperature of the hot oil used for heating the glue liquid must be reduced as much as possible to eliminate and alleviate the gel and wall gelling problems caused by overheating of the heat exchanger wall and local glue liquid, so as to avoid the gel problem in the glue liquid preheating process in the high-impact polystyrene production process. In this way, the problem of heating the styrene solution with a concentration of 6%-10% to the required temperature of 80-90 degrees in the high-impact polystyrene production process is solved while ensuring that the glue liquid does not rapidly self-polymerize and produce gel.

[0005] First, the rubber is prepared into a 12% glue solution, and then the 12% glue solution is heated to 60 degrees (a temperature that will not self-polymerize and form gel in a short time); at the same time, another separate styrene heating system is set up, and then the pure styrene is heated to a sufficiently high temperature of about 120-130 degrees Celsius, and then the two are mixed in proportion to make the mixed solution reach the concentration (concentration of 6%-10%) and temperature (80-90 degrees) required for production, and then the mixed solution is fully mixed in a mixer and quickly added to the reactor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heating system for feeding glue liquid of a high-impact polystyrene feeding system, comprising a first preheater, a second preheater, a mixer, a prepolymerization reactor and a temperature control mechanism, wherein the first preheater and the second preheater are used to heat the glue liquid that will enter the prepolymerization reactor, and the temperature control mechanism is used to control the working state of the first preheater and the second preheater to keep the glue liquid in the prepolymerization reactor at a constant temperature, and the mixer is arranged between the first preheater, the second preheater and the prepolymerization reactor, and the glue liquids in the first preheater and the second preheater are mixed by the mixer and then enter the prepolymerization reactor.

[0007] As a preferred embodiment of the utility model, the first preheater includes a first storage bin and a first heater, the first heater is arranged outside the first storage bin, the first storage bin is used to store part of the glue liquid that will enter the prepolymerization reactor, and the first heater is used to heat the glue liquid in the first storage bin.

[0008] As a preferred embodiment of the utility model, the second preheater includes a second storage bin and a second heater, the second heater is arranged outside the second storage bin, the second storage bin is used to store part of the glue liquid that will enter the prepolymerization reactor, and the second heater is used to heat the glue liquid in the second storage bin.

[0009] As a preferred embodiment of the utility model, the first heater and the second heater are both heating oil pipes, the two ends of the first heater are respectively a first oil inlet and a first oil outlet, and the two ends of the second heater are respectively a second oil inlet and a second oil outlet.

[0010] As a preferred embodiment of the present utility model, the temperature control mechanism includes a first oil pipe temperature control regulator, and the first oil pipe temperature control regulator is used to detect the temperature of the glue output by the first preheater.

[0011] As a preferred embodiment of the present utility model, the temperature control mechanism includes a second oil pipe temperature control regulator, and the second oil pipe temperature control regulator is used to detect the temperature of the glue output by the second preheater.

[0012] As a preferred embodiment of the utility model, the temperature control mechanism also includes a first heating oil flow control valve, which is arranged at the first oil inlet of the first heater, and the first heating oil flow control valve is used to control the flow of heating oil entering the first heater.

[0013] As a preferred embodiment of the utility model, the temperature control mechanism also includes a second heating oil flow control valve, which is arranged at the second oil inlet of the second heater, and the second heating oil flow control valve is used to control the flow of heating oil entering the second heater.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model heats different glue solutions to different temperatures by means of a first preheater and a second preheater, and mixes the glue solutions at different temperatures in a proportion by means of a mixer, thereby obtaining glue solutions with both concentration and temperature meeting the standards, thereby avoiding the problem of glue solution preheating gelation in the production process of high-impact polystyrene.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the heating system of the feeding glue of the high-impact polystyrene feeding system. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of the heating system of the feeding glue of the high-impact polystyrene feeding system. Figure 2 .

[0020] Reference numerals include:

[0021] The first preheater 1, the first storage bin 1a, the first heater 1b, the first oil inlet 1c, the first oil outlet 1d, the second preheater 2, the second storage bin 2a, the second heater 2b, the second oil inlet 2c, the second oil outlet 2d, the mixer 3, the prepolymerization reactor 4, the temperature control mechanism 5, the first oil pipe temperature control regulator 5a, the second oil pipe temperature control regulator 5b, the first heating oil flow control valve 5c, the second heating oil flow control valve 5d, the first glue liquid flow direction 6, the second glue liquid flow direction 7, the first heating oil flow direction 8, and the second heating oil flow direction 9. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Combination Figure 1 and Figure 2 As shown, the heating system of the glue liquid fed into the high-impact polystyrene feeding system described in the utility model comprises a first preheater 1, a second preheater 2, a mixer 3, a prepolymerization reactor 4 and a temperature control mechanism 5, wherein the first preheater 1 and the second preheater 2 are used to heat the glue liquid to be fed into the prepolymerization reactor 4, and the temperature control mechanism 5 is used to control the working state of the first preheater 1 and the second preheater 2 to keep the glue liquid in the prepolymerization reactor 4 in a constant temperature state, and the mixer 3 is arranged between the first preheater 1, the second preheater 2 and the prepolymerization reactor 4, and the glue liquids in the first preheater 1 and the second preheater 2 are mixed by the mixer 3 and then enter the prepolymerization reactor 4.

[0024] The specific operation scheme of the utility model is as follows: according to the process requirements, the feed flow rate of the glue liquid with a concentration of 8% is F, and the feed temperature is to reach 85 degrees. Therefore, a glue liquid with a concentration of 12% can be first prepared as the first glue liquid, and the feed flow rate of the first glue liquid is 2 / 3F. The first glue liquid is heated to a temperature of T1 through a first preheater 1, and the temperature will not self-polymerize and form a gel in a short time. High-purity styrene is the second glue liquid, and the feed flow rate of the second glue liquid is 1 / 3F. The second glue liquid is heated to a temperature of T2 through a second preheater 2. At the same time, since the heat absorption performance of the first glue liquid is similar to that of the second glue liquid, as long as the temperature of the first glue liquid is heated to 60 degrees, which will not self-polymerize and form gel in a short time, and the temperature of the second glue liquid is heated to 135 degrees, then the glue liquid of 12% of the heated first glue liquid at a lower temperature and the heated second glue liquid heated to a higher temperature of styrene are quickly mixed evenly to obtain a glue liquid with a temperature of about 85 degrees and quickly add it to the prepolymerization reactor 4, thereby avoiding the problem of glue liquid preheating gelation in the production process of high-impact polystyrene. The flow direction of the first glue liquid between the first preheater 1 and the prepolymerization reactor 4 is shown as the first glue liquid flow direction 6, and the flow direction of the second glue liquid between the second preheater 2 and the prepolymerization reactor 4 is shown as the second glue liquid flow direction 7.

[0025] In summary, the utility model heats different glue solutions to different temperatures through the first preheater 1 and the second preheater 2, and mixes the glue solutions of different temperatures in proportion through the mixer 3, so as to obtain glue solutions with both concentration and temperature meeting the standards, thereby avoiding the problem of glue solution preheating gelation in the production process of high-impact polystyrene.

[0026] Further, refer to Figure 2 As shown, the first preheater 1 includes a first storage bin 1a and a first heater 1b, wherein the first heater 1b is arranged outside the first storage bin 1a, the first storage bin 1a is used to store part of the glue liquid to be fed into the prepolymerization reactor 4, and the first heater 1b is used to heat the glue liquid in the first storage bin 1a. The second preheater 2 includes a second storage bin 2a and a second heater 2b, wherein the second heater 2b is arranged outside the second storage bin 2a, the second storage bin 2a is used to store part of the glue liquid to be fed into the prepolymerization reactor 4, and the second heater 2b is used to heat the glue liquid in the second storage bin 2a.

[0027] The first storage bin 1a is used to store a first glue liquid with a concentration of 12%, and the first heater 1b is used to heat the first glue liquid in the first storage bin 1a, and the first glue liquid is heated to a temperature T1 by the first heater 1b so that it will not self-polymerize and form a gel in a short time. The second storage bin 2a is used to store a second glue liquid of pure styrene, and the second heater 2b is used to heat the second glue liquid in the second storage bin 2a, and the second glue liquid is heated to a temperature T2 of 135 degrees by the second heater 2b.

[0028] Further, refer to Figure 2 As shown, the first heater 1b and the second heater 2b are both heating oil pipes, the two ends of the first heater 1b are respectively the first oil inlet 1c and the first oil outlet 1d, and the two ends of the second heater 2b are respectively the second oil inlet 2c and the second oil outlet 2d.

[0029] The flow direction of the heating oil in the first heater 1b is shown as the first heating oil flow direction 8. The heating oil with a certain temperature enters the first heater 1b from the first oil inlet 1c. When the heating oil flows in the first heater 1b, the heating oil will exchange heat with the first heater 1b, and the first heater 1b will exchange heat with the first storage bin 1a, thereby heating the first storage bin 1a, and then heating the first glue liquid in the first storage bin 1a.

[0030] The flow direction of the heating oil in the second heater 2b is shown as the second heating oil flow direction 9. The heating oil with a certain temperature enters the second heater 2b from the second oil inlet 2c. When the heating oil flows in the second heater 2b, the heating oil will exchange heat with the second heater 2b, and the second heater 2b will exchange heat with the second storage bin 2a, thereby heating the second storage bin 2a, and then heating the second glue liquid in the second storage bin 2a.

[0031] Further, refer to Figure 2As shown, the temperature control mechanism 5 includes a first oil pipe temperature control regulator 5a, which is used to detect the temperature of the glue liquid output by the first preheater 1. The temperature control mechanism 5 includes a second oil pipe temperature control regulator 5b, which is used to detect the temperature of the glue liquid output by the second preheater 2.

[0032] The design can achieve more precise and accurate temperature control and can detect whether the glue liquid temperature in the first preheater 1 and the glue liquid temperature in the second preheater 2 are within the optimal process range.

[0033] Further, refer to Figure 2 As shown, the temperature control mechanism 5 further includes a first heating oil flow control valve 5c, which is arranged at the first oil inlet 1c of the first heater 1b, and the first heating oil flow control valve 5c is used to control the flow of heating oil entering the first heater 1b. The temperature control mechanism 5 further includes a second heating oil flow control valve 5d, which is arranged at the second oil inlet 2c of the second heater 2b, and the second heating oil flow control valve 5d is used to control the flow of heating oil entering the second heater 2b.

[0034] The design can achieve more precise and accurate temperature control. Through the coordinated work between the first oil pipe temperature control regulator 5a and the first heating oil flow control valve 5c, and through the coordinated work between the second oil pipe temperature control regulator 5b and the second heating oil flow control valve 5d, it can ensure that the glue liquid temperature in the first preheater 1 and the glue liquid temperature in the second preheater 2 are both within the optimal process range.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A heating system for feeding glue of a high-impact polystyrene feeding system, characterized in that: The invention comprises a first preheater (1), a second preheater (2), a mixer (3), a prepolymerization reactor (4) and a temperature control mechanism (5). The first preheater (1) and the second preheater (2) are used to heat the glue liquid to be introduced into the prepolymerization reactor (4). The temperature control mechanism (5) is used to control the working state of the first preheater (1) and the second preheater (2) so as to keep the glue liquid in the prepolymerization reactor (4) at a constant temperature. The mixer (3) is arranged between the first preheater (1), the second preheater (2) and the prepolymerization reactor (4). The glue liquid in the first preheater (1) and the second preheater (2) is mixed by the mixer (3) and then enters the prepolymerization reactor (4).

2. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 1, characterized in that: The first preheater (1) comprises a first storage bin (1a) and a first heater (1b), wherein the first heater (1b) is arranged outside the first storage bin (1a), the first storage bin (1a) is used to store part of the glue liquid to be introduced into the prepolymerization reactor (4), and the first heater (1b) is used to heat the glue liquid in the first storage bin (1a).

3. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 2, characterized in that: The second preheater (2) comprises a second storage bin (2a) and a second heater (2b), wherein the second heater (2b) is arranged outside the second storage bin (2a), the second storage bin (2a) is used to store part of the glue liquid to be introduced into the prepolymerization reactor (4), and the second heater (2b) is used to heat the glue liquid in the second storage bin (2a).

4. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 2 or 3, characterized in that: The first heater (1b) and the second heater (2b) are both heating oil pipes; the two ends of the first heater (1b) are respectively a first oil inlet (1c) and a first oil outlet (1d); the two ends of the second heater (2b) are respectively a second oil inlet (2c) and a second oil outlet (2d).

5. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 4, characterized in that: The temperature control mechanism (5) comprises a first oil pipe temperature control regulator (5a), and the first oil pipe temperature control regulator (5a) is used to detect the temperature of the glue liquid output by the first preheater (1).

6. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 4, characterized in that: The temperature control mechanism (5) comprises a second oil pipe temperature control regulator (5b), and the second oil pipe temperature control regulator (5b) is used to detect the temperature of the glue output by the second preheater (2).

7. A heating system for feeding glue of a high-impact polystyrene feeding system according to claim 5, characterized in that: The temperature control mechanism (5) further comprises a first heating oil flow control valve (5c), which is arranged at a first oil inlet (1c) of the first heater (1b), and is used to control the flow of the heating oil entering the first heater (1b).

8. The heating system for feeding glue of a high-impact polystyrene feeding system according to claim 6, characterized in that: The temperature control mechanism (5) further comprises a second heating oil flow control valve (5d), wherein the second heating oil flow control valve (5d) is arranged at a second oil inlet (2c) of the second heater (2b), and the second heating oil flow control valve (5d) is used to control the flow of the heating oil entering the second heater (2b).

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