KR101380871B1 - Using waste plastic agricultural and industrial production units recycling oil - Google Patents

Abstract

The present invention, during the thermal decomposition of the waste plastic contained in the cage, while producing an oil from the organic gas generated, and by injecting water into the cage of the reactor by the water vapor generated by the organic gas is replaced by a condenser while supplying the inside of the cage The present invention relates to an agricultural and industrial recycled oil production apparatus using waste plastic that can be easily discharged and disposed of by treating sludge by removing flash points by seeping into the sludge.

Description

Using waste plastic agricultural and industrial production units recycling oil}

The present invention relates to an apparatus for producing regenerated oil using waste plastics, and more particularly, to produce oil from organic gases generated during thermal decomposition of waste plastics contained in a cage, and to spray water into a cage of a reactor. The present invention relates to an agricultural and industrial recycled oil production apparatus using waste plastics that can be easily discharged and treated by removing the flash point by dissolving the organic gas by the generated steam and supplying it to the condenser and removing the flash point. .

Since landfilling of waste plastics causes serious environmental pollution, technologies for treating waste plastics and recycling them as resources are being actively researched. Such waste plastic recycling technologies include energy recycling, material recycling, and chemical recycling.

Energy recycling of waste plastics uses thermal energy obtained by incineration of waste plastics. However, incineration of waste plastics inevitably generates harmful substances, such as dioxins and furan substances, which are harmful to the environment and the human body. There is a disadvantage that the investment and operation of the pollution prevention facility is expensive.

Therefore, waste plastics are prioritized for material recycling and chemical recycling rather than energy recycling.

The recycling of raw materials for waste plastics classifies waste plastics and uses them as raw materials for plastic products. In order to recycle waste plastics, waste plastics have to be classified by type. However, due to the many difficulties involved in sorting out waste plastics or incompatibilities, they have problems of low workability and economic efficiency.

On the other hand, chemical recycling is to obtain an oil that can be used as a raw material from waste plastics, and an emulsifying apparatus and technology for chemical recycling of waste plastics are disclosed in Korean Patent Publication Nos. Easily found in many literatures, including 6459.

In the emulsification apparatus using these techniques, waste plastic is sorted through the raw material inlet of the reactor, and then thermal energy is applied to the reactor by heating means such as a burner, so that the waste plastic is thermally decomposed to obtain oil gas. Get The temperature of the reactor is different depending on the type of waste plastic, reaction conditions, etc., but is usually maintained at about 250 ~ 700 ℃. Oil gas generated in the pretreatment process through pyrolysis of waste plastic is produced as oil through a series of emulsification treatment processes such as liquefaction and separation.

However, in the above emulsifying apparatus, waste plastic is frequently carbonized as heat applied by heating means is concentrated on the bottom of the reactor, and carbonization of waste plastic into the reactor is performed. Not only is the heat transfer drastically lowered, but the temperature variation of the reactor occurs, the decomposition reaction rate of the waste plastics is slowed, thereby reducing the efficiency and increasing energy consumption.

In addition, during pyrolysis of waste plastics, sludge (metals, glass, soil, unmelted waste plastics, etc.) remains on the bottom of the reactor, and the sludge cools the reactor, and the operator opens the door directly. After the treatment, the sludge is discharged into the reactor and the sludge is discharged. If the temperature of the reactor does not drop to a predetermined temperature, for example, 150 ° C. or lower, outside air flows in through the door to be opened. As the sludge is lit by external air, a lot of time and manpower is required for the treatment of the sludge, and there is a problem in that the operation rate and the yield of oil are lowered due to the operation stop of the emulsifier according to the treatment of the sludge.

In addition, when caulking and carbonization of waste plastic is fixed to the bottom of the reactor, the caulking is not periodically removed, and the volume inside the reactor decreases and the operator checks the temperature and time. Due to inadequate management, such as carbonization sludge accumulated in the discharge valve, there was a problem of frequent clogging, and waste plastics could not be pyrolyzed to stop the operation of the reactor.

In view of the above-described conventional problems, an object of the present invention is to easily move a cage into which waste plastic is introduced into and out of a reactor by a roller, and to easily maintain sludge remaining in the cage. The present invention provides a reclaimed oil production apparatus using waste plastics that can be discharged and treated, and the temperature of the reactor does not drop rapidly, thereby reducing the heating time of the reactor and improving productivity and reducing energy consumption.

In addition, another object of the present invention, when the reactor is heated to a low temperature of 300 ~ 600 ℃, after thermal decomposition of the waste plastic, to discharge the sludge of the waste plastic to treat, steam generated by spraying water to the heated cage The present invention provides an apparatus for producing recycled oil using waste plastic that discharges organic gas inside a reactor to a condenser to alleviate the need for fire.

In addition, another object of the present invention is to provide a regeneration oil production apparatus using waste plastic that can lower the temperature inside the reactor while the water injected into the cage penetrates the sludge to remove the flash point.

Recycling oil production apparatus using waste plastic of the present invention,

A reactor equipped with a door;

Heating means installed at the lower end and bottom of each side of the reactor to heat the plastic waste;

A cage which receives the waste plastic and is introduced into the reactor;

After the thermal decomposition of the waste plastic by the heating means, it is characterized in that it comprises a water injection unit for spraying water to the cage to remove the flash point while discharging the organic gas generated during the pyrolysis to the condenser.

According to the present invention, it is possible to shorten the working time according to the sludge treatment by easily moving the cage into which the waste plastic is introduced into and out of the reactor by the roller, and by discharging the sludge remaining in the cage easily. In addition, since the temperature of the reactor does not drop rapidly, it is possible to reduce the heating time of the reactor, thereby improving productivity and reducing energy consumption, thereby improving economics.

In addition, according to the present invention, when the reactor is heated to a low temperature of 300 ~ 600 ℃, after thermal decomposition of the waste plastic, to discharge the sludge of the waste plastic to be treated, water vapor generated by spraying water to the heated cage reaction Emission of organic gas from the furnace to the condenser, and water injected into the cage is introduced into the sludge, eliminating the flash point, and alleviating the requirement to catch fire. By doing so, the work efficiency can be improved.

1 is a schematic view of the present invention
Figure 2 is a schematic diagram of a state of thermally decomposing waste plastics by the present invention
Figure 3 is a schematic diagram of a state of spraying water to the basket by the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a schematic view of the present invention.

Recycling oil production apparatus 100 using the waste plastics of the present invention, the reactor 110 is provided with a door, is installed on the lower end and bottom of each side of the reactor 110 to thermally decompose waste plastic (P) The heating means 120 is configured to heat up so that the waste plastic (P) is received, the cage 130 is placed into the reactor 110, the waste plastic (P) by the heating means 120 is configured After the pyrolysis of the, it is configured to include a water injection unit 140 for spraying water to the cage 130 to remove the flash point while discharging the organic gas generated during the pyrolysis to the condenser 150, which will be described in more detail Same as

The cage 130 is provided with a body 131 having an upper portion open to accommodate the waste plastic P, and includes a roller 132 mounted on a bottom surface of the body 131.

It is further provided with a screen 133 mounted on the upper end of the body 131.

The water spraying unit 140 is provided with a nozzle 141 mounted to the reactor 110 and the storage tank 143 and opened and closed by a valve 141 ′, and a pump 142 installed in the nozzle 141. ) Is provided, and includes a storage tank 143 for storing the water supplied to the pump 142.

The following describes the operation of the present invention.

First, various waste plastics (P) such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and ABS resin (Acrylonitrile Butadiene Styrene resin, ABS resin) are selected and washed and dried. Then, it is crushed to a certain size through a grinder (not shown), or compressed to form a polygon.

The waste plastic P crushed into a predetermined size or compressed into polygons as described above is stored in the body 131 of the cage 130 having an open top, and then the screen 133 is placed on the upper end of the body 131. When the thermal decomposition of the waste plastic (P) compressed into a polygon, it is to prevent the waste plastic (P) falling out of the body 131, it can be configured in various ways such as iron grid, perforated network, wire mesh Can be.

The body 131 of the cage 130 in which the waste plastic P is stored is moved into the reactor 110 through an open door, and the roller 132 is easily mounted on the bottom of the body 131. Since it can be moved, it is possible to improve the workability and productivity by reducing the time required for the input and preparation of the waste plastic (P).

When the cage 130 is moved into the reactor 110, as shown in FIG. 2 in a state where the door is closed, the heating means 120 is heated under the control of the controller. The silver is preferably an electric heater, the temperature inside the reactor 110 by the heat generated by the heating means 120 is heated up to 200 ℃ or more while heating until the set temperature is maintained.

While maintaining the temperature inside the reactor 110 at a set temperature, for example, 300 to 400 ° C., it is possible to optimally make a pyrolysis environment of the waste plastic (P), and as the waste plastic (P) is pyrolyzed, The organic gas is generated, the organic gas is supplied to the condenser 150 through the piping of the reactor 110 by the convection phenomenon, the condenser 150 to condense the organic gas to produce oil, then the oil tank Stored at 160.

The water stored in the condenser 150 must be maintained at a constant temperature at all times to condense the organic gas while being circulated by the water stored in the condenser tank (not shown) and the circulation device (not shown).

In general, polyethylene, polypropylene, and polystyrene are pyrolyzed at about 400 ° C, and the ABS resin is pyrolyzed at 200 to 300 ° C.

After the pyrolysis reaction of the waste plastic (P) stored in the cage 130 is completed in the above process, to discharge the sludge (S) remaining in the cage 130, as shown in FIG. Accordingly, the water stored in the storage tank 143 is sprayed to the nozzle 141 by the pump 142 at a pressure higher than the pressure of the water supplied to the water pipe while the valve 141 ′ of the water injection unit 140 is opened.

A portion of the water sprayed into the nozzle 141 is heat exchanged with heat maintaining 300 to 400 ° C. inside the reactor 110 to generate water vapor, and at the same time, the organic matter inside the reactor 110 is caused by the pressure of the steam generated. Gas is supplied to the condenser 150 via a pipe and condensed, and then stored in the oil tank 160, and the oil stored in the oil tank 160 can be fractionated and distilled to be used for internal combustion engines, gas turbines, etc. Fuel can be produced.

In addition, a part of the water sprayed into the nozzle 141 penetrates into the sludge S remaining in the cage 130 to remove the flash point of the sludge S, thereby opening the door of the reactor 110 and flowing into the door. In addition to preventing fire from occurring in the sludge S by the external air, the temperature inside the reactor 110 may be lowered than before the water is injected.

Reaction furnace in a state in which the organic gas is supplied to the condenser 150 by the water injected into the nozzle 141, and the temperature inside the reactor 110 is lowered than before the water is injected while removing the flash point of the sludge S. Open the door of 110, move the cage 130 through the open door to the outside of the reactor 110, remove the sludge (S) inside the cage 130, and remove the waste plastic (P) The above process of storing in the cage 130 and moving into the reactor 110 may be repeated.

Here, the cage 130 may be moved in the state where the temperature of the reactor 110 does not drop rapidly even by the water sprayed from the nozzle 141, so that a long time for adjusting the heating temperature of the reactor 110 is long. There is an effect that can improve economic efficiency by reducing productivity and energy consumption.

While the present invention has been described with reference to the particular embodiments and drawings, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting in any ordinary or prejudicial sense. It must be interpreted in terms of meaning and concept. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

100: regeneration oil production apparatus 110: reactor
120: heating means 130: cage
140: water spray unit 141: nozzle
142: pump 143: storage tank
150: condenser 160: oil tank

Claims (4)

A reactor equipped with a door;
Heating means installed at the lower end and bottom of each side of the reactor to heat the plastic waste;
A cage which receives the waste plastic and is introduced into the reactor;
After the pyrolysis of the waste plastic by the heating means, the recycled oil production using waste plastic comprising a water injection unit for spraying water to the cage to remove the flash point while discharging the organic gas generated during the pyrolysis to the condenser Device.
The method according to claim 1, wherein the cage,
A body having an upper portion open to receive the waste plastic;
Recycling oil production apparatus using waste plastic, characterized in that provided on the bottom surface of the body including a roller for guiding the movement of the body.
The method of claim 2,
Recycling oil production apparatus using waste plastic, characterized in that it further comprises a screen mounted to the upper end of the body.
The method according to claim 1, wherein the water spray unit,
A nozzle mounted to the reactor and the storage tank, the nozzle being opened and closed by a valve;
A pump installed at the nozzle;
Recycling oil production apparatus using a waste plastic, characterized in that it comprises a storage tank for storing the water supplied to the pump.

Images