KR100328388B1 - The temperature-controlling arrangement for chemical storage tank - Google Patents

Abstract

The present invention relates to an internal temperature of a chemical storage tank for storing anti-degradants, which is one of rubber compounding materials, in a liquid mixing state for automatically inputting a chemical compound into a rubber mixing mixer. It relates to a temperature control device for maintaining at a constant temperature.

Description

The temperature-controlling arrangement for chemical storage tank

The present invention, among the various drugs to improve the properties of the raw material rubber (primary blending), in order to keep the anti-degradants provided in the liquid state in an optimal state, the internal temperature of the chemical storage tank to an appropriate temperature A device for holding.

Generally, raw rubbers obtained by reacting latex with acetic acid or synthetic rubbers obtained by processing crude oil are not compatible, and various chemicals are added to improve their properties. Examples include reinforcing agents, fillers, softeners, anti-aging agents, vulcanizing agents, accelerators, colorants, and the like.

Of these rubber compounding agents, anti-aging agents are greatly influenced by temperature (temperature during storage or handling), so care should be taken when handling this drug. In other words, if the temperature at the time of storage or handling is too high, the purity of the drug itself is reduced, which in turn leads to a weakening of the anti-aging function of the finished product.

For this reason, workplaces prefer solid antioxidants.

Figure 3 of the accompanying drawings shows a process for handling the above-described anti-aging agent in the solid state, the nature of the drug, for example, such as BLE (reactant of diphenylamine and acetone) when handling Since a large amount of dust is generated, it is unsuitable to be automatically weighed (basis weight) and added, and for this reason, most of the workers directly weigh and input the mixer.

On the other hand, in order to use liquid chemicals, it is necessary to maintain a constant temperature at the time of storage or handling. However, since the steam having a temperature of 100 ° C. or more is conventionally used as a thermal insulation medium (thermal medium), As the temperature is high, there is a problem that the purity of the anti-aging agent itself is reduced, which is very difficult to deal with in the actual work site (see Fig. 2).

In addition, if the liquid drug is not maintained at a constant temperature, the viscosity of the drug increases as the temperature decreases, so that the flowability is remarkably lowered, so that automatic metering cannot be performed.

To help understand this, Table 1 shows an example of the purity change when the liquid BLE product is stored and left under specific temperature conditions, and Table 2 shows the viscosity change according to the temperature change.

Table 1. Purity change with temperature of liquid BLE

standard 75 ℃ 100 ℃ 1 day later 3 days later 6 days later 1 day later 3 days later 6 days later 100% 100% 98% 94.40% 62% 35.30% 7.40%

Table 2. Viscosity change with temperature of liquid BLE (cps: kinematic viscosity, centipoises)

Room temperature 30 ℃ 40 ℃ 50 ℃ 60 ℃ 70 ℃ 80 ℃ 90 ℃ 100 ℃ 3000 cps 1000 250 96 46 24 15 10 7

It can be seen from Table 1 that the higher the temperature, the more rapidly the purity of the drug drops, and in Table 2, the lower the temperature, the higher the viscosity, the lower the flowability of the liquid drug. Therefore, in order to maintain the purity and flow of the drug in an optimal state, heat should be applied at a constant temperature.

The present invention, when storing or handling a drug that is extremely sensitive to temperature in the liquid phase, while preventing the fall of the purity of the drug at the same time maintaining the temperature of the flow of the drug does not interfere, the device capable of automatically achieve the metering and input The purpose is to provide.

1 is a schematic view showing a state in which a temperature control device for chemical storage tank of the present invention is installed,

2 is a schematic view showing a chemical storage tank in which a conventional heating device is installed;

Figure 3 is a chart showing the drug (anti-aging) handling of the solid state.

* Description of the main reference numerals

1: chemical reservoir 2: chemical inlet

3: internal temperature holding tube 4, 106: temperature sensor

5, 107: steam supply valve 6: condensate discharge line

7: Steam Trap 100: Hot Water Tank

101: hot water supply pump 102: hot water recovery pipe

103: water gauge 104: ball wire

105: ball 108: steam blower

109: cooling water supply valve 110: hot water production regulator

111: steam outlet 112: overflow overflow outlet

113: outlet

Hereinafter, the present invention will be described with reference to the drawings.

As shown in FIG. 2, the liquid medicine is stored in a storage tank supplied with steam as a heating medium. The steam sent from the steam supply valve 5 transfers heat to the chemicals stored in the chemical storage tank 1 while passing through an internal temperature holding pipe 3, and then through a condensate discharge pipe 6, a steam trap. condensed in trap 7) and recovered. If the chemicals to be stored in a chemical storage container are provided in a solid state, they should be dissolved and used in the storage tank.

The chemical maintained at the constant temperature is introduced into the metering device and the mixer.

At this time, the reason why the steam is supplied to the internal temperature holding tube 3 inserted into the inside of the reservoir is to prevent the curing of the molten chemical and to maintain a constant viscosity to automatically measure the flow rate. This is to avoid disturbing the castle.

Disadvantages of this embodiment are that when the high viscosity causes a problem in flowability, the metering speed is significantly slowed and a large metering error occurs, or if it is hardened, the inside of the molten chemical inlet tube (not shown) is blocked. Will also occur.

In addition, as described above, since the anti-aging agent is a temperature-sensitive drug, it is impossible to use it because the purity drops sharply at a high temperature of 100 ° C. or higher.

Therefore, in the present invention, instead of applying high-temperature steam as shown in Figure 1, the temperature and the temperature (about 60 ° C or less) that does not cause the purity of the chemical as shown in Table 2 by mixing the steam and cooling water together The furnace hot water is manufactured in the hot water production tank 100, and the water is supplied to the internal temperature holding tube 3 of the chemical storage tank.

An embodiment of the present invention will be described with reference to FIG. 1.

The configuration of the present invention is connected to the chemical storage tank (chemical storage tank) 1 through the hot water supply pump 101, to supply the hot water production tank 100 for providing hot water, and to supply cooling water and steam, respectively The cooling water supply valve 109 and the steam supply valve 107 connected to the hot water production tank 100, and the temperature and the water level in the hot water production tank 101 attached to the hot water production tank 100, respectively Temperature sensor 106 and leveller 103 for measurement, the coolant supply valve 109, steam supply valve 107, temperature sensor 106, level gauge 103 and hot water supply pump 101. It consists of a hot water manufacturing controller (controller, 110) for controlling.

When the temperature of the hot water to be supplied is set by a temperature controller (not shown) mounted on the hot water production controller 110, the steam supply valve 107 and the cooling water are controlled by the hot water production controller 110 according to this value. The supply valve 109 is opened, and steam and cooling water flow into the hot water production tank 100. At this time, the temperature of the water mixed with each other is sensed by the temperature sensor 106 is displayed on the hot water manufacturing regulator (110).

When the temperature of the water to be produced reaches a set temperature, the two water supply valves 107 and 109 are closed by the hot water production regulator 110, and the hot water supply pump 101 is operated to supply the hot water to the chemical reservoir 1 To the internal temperature holding tube (3). The water to be supplied is recovered to the hot water production tank 100 through the hot water recovery pipe 102 by the supply pressure of the hot water supply pump 101.

Therefore, it is possible to apply heat to the medicine in the chemical storage tank 1 at a temperature of, for example, about 60 ° C. without affecting the flowability of the medicine and at the same time reducing the purity of the medicine. Drugs with temperature levels are fed into the metering device and mixer.

In addition, the water level of the water produced in the hot water production tank 100 is measured by the water gauge 103, this value is also displayed on the hot water production regulator (110). In order to avoid a pressure increase in the predetermined volume of the hot water production tank 100, a steam outlet (vent, 111) and an overflow drain (112) are mounted on the side, and steam is manufactured by hot water. A steam ejector 108 was inserted and inserted to prevent noise when being supplied into the tank 100 and to rapidly diffuse steam.

By installing the hot water manufacturing apparatus as shown in Figure 1 for the BLE (liquid) drug as an anti-aging agent as in the previous example, it is possible to realize the automation of the metering and injection of the drug, the temperature of the chemical storage tank (1) is about 45 ℃ It is maintained and is currently operating at a level where there is no fear of a drop in drug purity.

In using the temperature-sensitive anti-aging agent in the liquid phase as described above, by manufacturing and supplying a relatively low-temperature hot water as shown in Figure 1, it prevents the decrease in the purity of the drug and maintains the flowability of the drug to automate the weighing and injection Can be achieved.

Claims (2)

Hot water production tank 100 for providing hot water to the chemical reservoir 1, a cooling water supply valve 109 for supplying cooling water to the hot water production tank 100, and steam supply for supplying steam A valve 107, a temperature sensor 106 mounted to the hot water production tank 100, a water level 103 for measuring the water level inside the hot water production tank 100, and the hot water production tank Hot water supply pump 101 for transferring the hot water from the (100) to the chemical reservoir (1), the hot water supply pump 101, the temperature sensor 106, the water level meter 103, the steam supply valve 107 And a hot water production controller 110 connected to the cooling water supply valve 109 to control the member, and a hot water for recovering the hot water sent to the chemical reservoir 1 back to the hot water production tank 100. Consists of a recovery pipe (102), While installing the steam outlet 111 and the water overflow outlet 112 in the hot water production tank 100, and including a steam jet 108 for supplying steam to the inside of the hot water production tank 100 Temperature control device of the chemical storage tank for rubber compounding. delete