KR100861573B1 - Heating tank for restoring apparatus of waste plastic to oil - Google Patents

Abstract

A heating tank mounted at an oil restoring apparatus of a waste plastic is provided to heat the plastic, using minimum energy, by placing the heating tank in an insulating chamber, heating the waste plastic, and applying vibration by boiling of the molten plastic. A heating tank(100) mounted at an oil restoring apparatus of a waste plastic(ps) comprises an outer cylinder(110), an inner cylinder(120), and a vibration plate(130). The outer cylinder has an upper side with a plastic gas discharging port(102), an overpressure plastic gas discharging port(104), and a wax discharging port(106), and one side with a blocking door(112) which is opened and closed. The inner cylinder, which is installed in the outer cylinder, is connected with the plastic gas discharging port, the overpressure plastic gas discharging port, and the wax discharging port. A lower surface of the vibration plate is separated from an inner peripheral surface of the inner cylinder in a predetermined gap. The heating tank, which is placed in an insulation chamber, discharges a plastic gas generated by heating/liquidizing/gasifying the waste plastic at less than combustion temperature. The molten plastic is agitated by applying vibration by boiling of a molten plastic(pl) which is flowed in a space between the vibration plate and an inner peripheral surface of the inner cylinder.

Description

Heating tank for restoring apparatus of waste plastic to oil

1 is a perspective view and a cross-sectional view showing the overall configuration of the heating tank mounted on the oil reduction device of the waste plastic according to the present invention

Figure 2 is a conceptual diagram showing the overall configuration of the oil reduction device of the waste plastic equipped with a heating tank according to the present invention

* Description of the symbols for the main parts of the drawings *

100 heating tank 110 outer cylinder

120 ... inner cylinder 130 ... vibration mounting plate

140 ...

The present invention relates to a heating tank mounted on an oil reducing apparatus of waste plastics, and adopts a configuration in which a molten plastic is agitated by vibrating the boiling plastic waste by boiling, and does not need to add an unnecessary apparatus. The present invention relates to a heating tank mounted on an oil reduction device of waste plastic that enables heating of plastics with minimal energy.

In recent years, due to the rapid increase in the production of plastics due to the development of petrochemicals, the treatment of the wastes is a social problem, and as described above, various devices are known regarding a device for heating waste plastics and reducing them to oils as raw materials. It is.

In view of the above, Korean Patent Application No. 10-1993-21806, "Method for recovering low boiling point hydrocarbon oil by pyrolysis treatment of waste synthetic resin" (hereinafter referred to as "prior art 1"), and Patent Registration No. 10-345760 Emulsification reduction apparatus of waste plastic "(hereinafter" prior art 2 ") and the patent application" 10-2006-7014064 "waste plastic emulsification reduction apparatus" (hereinafter "prior art 3").

The prior art 1 is a method of condensing the synthetic resin into a molten bath by heating and condensing it into the liquid phase through the packed bed of the pyrolysis tank, the gas is discharged and the oil is recovered, the prior art 2 is heated while grinding the plastic through the hopper It discharges gas and recovers oil to the lower side of the hopper.

In addition, the prior art 3 is an inlet for injecting waste plastic, a pyrolysis tank for heating the waste plastic introduced by flowing a high frequency current, a supply unit for supplying the waste plastic injected into the inlet to the pyrolysis tank through a supply means, and the pyrolysis tank It is a structure provided with the emulsification process part which cools and emulsifies the decomposition gas produced | generated at

However, the above-mentioned prior arts require equipment such as a stirrer for uniformly stirring molten plastic heated with waste plastic and a drive motor for driving the stirrer, and unnecessary energy must be consumed to operate the above components. There was a problem.

In addition, the prior art 3 is also a hassle to put a catalyst in the heat melting of the waste plastic by high frequency heating.

In particular, in the case of the prior art 3, a tremendous amount of electrical energy is generated in the generation of the high frequency current used to apply a high temperature state to melt the waste plastic in the pyrolysis tank.

Therefore, the prior art 3 is also inevitably a significant increase in the cost to cover the enormous amount of power for the procurement of electrical energy, which has also raised a very inefficient problem in terms of energy efficiency.

The present invention has been made to solve the above problems, there is no need to add unnecessary devices and provides a heating tank mounted on the oil reduction device of the waste plastic to enable the heating of the plastic with a minimum of energy. There is a purpose.

In order to achieve the above object, the present invention is equipped with a waste plastic oil reduction device for reducing heat to waste oil by applying heat to the waste plastic in the heating tank for input heating the waste plastic, the heating tank is An outer cylinder having a plastic gas discharge port, an overpressure plastic gas discharge port, and a wax return port on the upper side, respectively, and having a shutoff door openable on one side; A cylindrical inner cylinder embedded in the outer cylinder and connected to the plastic gas outlet, the overpressure plastic gas outlet, and the wax refund port; And a vibration mounting plate having a lower surface spaced apart from the inner circumferential surface of the inner cylinder and having a semi-cylindrical shape at both ends, wherein the heating tank is disposed in an insulating chamber having a heating burner on one side thereof and into the heating tank. The molten plastic is stirred by heating the pulverized injected waste plastic below the combustion temperature to discharge the plastic gas generated by liquefaction and vaporization, and by vibrating the molten plastic introduced into the space between the vibration mounting plate and the inner circumferential surface of the inner cylinder. It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view and a cross-sectional view showing the overall configuration of the heating tank mounted on the oil reduction device of the waste plastic according to the present invention, the heating tank 100 according to the present invention as shown is largely the outer cylinder 110, the inner cylinder ( 120 and the vibration mounting plate 130 can be seen.

Here, the heating tank 100 can be appropriately modified in size and number according to the amount and processing capacity of the waste plastic (ps) is injected.

The outer cylinder 110 is provided with a plastic gas outlet 102, an overpressure plastic gas outlet 104, and a wax return hole 106 on the upper side to discharge molten plastic gas, and open and close as shown in FIG. 1 (a). It is cylindrical in shape with a possible blocking door 112.

In addition, the inner cylinder 120 has a cylindrical shape embedded in the outer cylinder 110 and connected to the gas outlet 102, the overpressure plastic gas outlet 104, and the wax refund port as shown in FIG. 1B. .

In addition, the vibration mounting plate 130 is mounted as a fixture 140 so that the lower surface is spaced apart from the inner circumferential surface of the inner cylinder 120 by a predetermined interval and has a semi-cylindrical shape of both ends open.

Therefore, when the waste plastic is put into the heating tank 100 having the above-described configuration and heated and melted below the combustion temperature, more specifically, at 380 to 450 ° C., the waste plastic is liquefied and vaporized to be generated from the liquefied molten plastic pl. Plastic gas pg is discharged through the plastic gas outlet 102 and the overpressure plastic gas outlet 104.

Here, the plastic gas pg is discharged through each of the outlets 102 and 104, and in contact with the inner circumferential surface of the inner cylinder 120 to liquefy again to form an upper portion of the inner circumferential surface of the inner cylinder 120 in a state of molten plastic pl. Flowing down from the oscillating mounting plate 130 and the inner cylinder 120 is continuously boiled while flowing into the space between the inner circumferential surface.

At this time, the vibration mounting plate 130 is given a vibration due to the continuous boiling of the molten plastic (pl) and the molten plastic (pl) on the vibration mounting plate 130 by the vibration, and the vibration mounting plate ( The molten plastic pl between 130 and the inner circumferential surface of the inner cylinder 120 may be uniformly stirred and mixed.

The correlation between the heating tank 100 and other components in the oil reduction device in which the heating tank mounted on the oil reduction device of the waste plastic according to the present invention having the above configuration is actually applied will be briefly described with reference to FIG. 2. do.

As shown, the pulverized waste plastic (ps) with a grinder (b) is input to the heating tank 100, and the fuel tank (F) is mounted on one side of the heat insulation chamber (C) in which the heating tank (100) is disposed. Waste plastic (ps) in the heating tank (100) is heated and melted to a temperature below the combustion point and discharged as a plastic gas by a heating burner (B) operating with oil.

After the plastic gas is discharged through the plastic gas discharge pipe 610 connected to the plastic gas outlet 102, the plastic gas is delayed and the wax generated is returned to the heating tank 100 to continuously discharge the remaining plastic gas. After discharging the wax separation tank 200, it is liquefied and reduced to oil through the reduction assembly 300 is stored in the oil tank (OT), transported to the tank lorry vehicle (TL) is used for various purposes.

Here, the cooling water supply of the wax separation tank 200 and the reduction assembly 300 is supplied from the storage tank (WT) for receiving the water supplied from the tap water (T) and the cooling water used is the storage water through the cooling tower (CT) It is returned to the tank WT.

At this time, the remaining plastic gas discharged from the reduction assembly 300 is collected in the water contained in the separate backflow prevention tank 400 is discharged as a harmless after-treatment gas, the discharged after-treatment gas is in the air or the heating burner It is supplied to the auxiliary heat source of (B).

On the other hand, the heating tank 100 is connected to the overpressure plastic gas outlet 104, the overpressure gas discharge pipe 630 for discharging the plastic gas pressurized over a predetermined pressure and the overpressure gas discharge pipe 630 and nitrogen gas A purge pipe 700 for interconnecting the filled nitrogen tank NT is further provided.

In addition, the overpressure gas discharge pipe 630 has a bypass pipe 632 connected to the purge pipe 700 for injecting nitrogen gas through the nitrogen tank NT to stabilize the plastic gas heated and pressurized to a predetermined pressure or more. It is further provided to prevent the explosion of the heating tank 100 due to the overheated pressurized plastic in advance.

The bypass pipe 632 is branched between the connection portion (j) of the purge pipe 700 and the overpressure gas discharge pipe 630 and the heating tank 100 and provided with a safety valve 634, the pressure above the set pressure When the plastic gas is overheated and pressurized, the safety valve 634 is opened to bypass the plastic gas, and then nitrogen gas is injected from the nitrogen tank NT into the overpressure gas discharge pipe 630 to stabilize it.

As described above, the present invention has as its basic technical idea to provide a heating tank mounted on an oil reduction device for waste plastic, which does not need to add an unnecessary device and enables heating of plastic with minimal energy. It can be seen.

In addition, many modifications and applications are possible to those skilled in the art within the scope of the basic technical idea of the present invention.

According to the present invention having the above-described configuration, unnecessary components such as stirring blades and drive motors for agitating the grinder and molten plastic separately in the heating tank, and unnecessary energy consumption than necessary for the operation of such components By adopting the structure of the vibration mounting plate mounted on the inner circumferential surface of the inner cylinder and allowing it to be naturally agitated by the vibration of the molten plastic, it is possible to drastically reduce the initial manufacturing cost and greatly reduce the operating cost. It is an invention.

Claims (3)

In the heating tank that is mounted on the waste plastic oil reduction device that is applied to the waste plastic to reduce the liquid raw material to oil, and the waste plastic is input and heated, The heating tank 100, An outer cylinder 110 having a plastic gas outlet 102, an overpressure plastic gas outlet 104, and a wax refund opening 106 at an upper side thereof, and having a blocking door 112 openable at one side thereof; A cylindrical inner cylinder 120 embedded in the outer cylinder and connected to the plastic gas outlet, the overpressure plastic gas outlet, and the wax refund port 106; And A lower surface is mounted spaced apart from the inner circumferential surface of the inner cylinder and a semi-cylindrical vibration mounting plate 130 of both ends opening; The heating tank 100 is disposed in a heat insulating chamber (C) provided with a heating burner (B) on one side while liquefied and vaporized by heating waste plastic (ps) pulverized into the heating tank (100) below a combustion temperature. Discharge the generated plastic gas (pg), and the oil reduction of the waste plastic, characterized in that the molten plastic is stirred by vibrating by the boiling of the molten plastic (pl) introduced into the space between the vibration mounting plate and the inner cylinder inner peripheral surface Heating tank mounted on the device. delete The method of claim 1, In the heating tank 100, The overpressure gas discharge pipe 630 is connected to the overpressure plastic gas outlet 104 to discharge the plastic gas pressurized and overheated by a predetermined pressure or more, and the nitrogen gas NT filled with the overpressure gas discharge pipe and nitrogen gas are interconnected. The purge pipe 700 is further provided, The bypass pipe 632 is branched between the connection part (j) of the purge pipe and the overpressure gas discharge pipe and the heating tank, and provided with a safety valve 634, the waste plastic oil reduction device is further provided. Heating tank.

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