KR102705282B1 - Waste tire upcycling process system and process method - Google Patents

Abstract

The present invention relates to a process system and process method for upcycling waste tires, and more specifically, to a process system and method for upcycling waste tires by reacting waste tires with a catalyst made of synthetic ceramics in a vacuum reactor to extract recycled oil, carbon black, and activated carbon from the waste tires, thereby enabling extraction of high-purity extracts with a small amount of time and energy, thereby enabling upcycling of a large amount of waste tires, and recycling of the high-purity extracts in various places, thereby being environmentally friendly and highly economical. In addition, a vacuum is applied to a collecting tank connected to the reaction tank so that the vacuum pressure of the reaction tank is lower than that of the collecting tank, and a heat source of 80 to 350°C is supplied to the reaction tank, thereby enabling extraction of the extracts at a low temperature and pressure that are lower than the high temperature and pressure required for conventional extraction, thereby enabling high efficiency with a small amount of energy.

Description

Waste tire upcycling process system and process method

The present invention relates to a system and method for upcycling a waste tire, and more specifically, to a system and method for upcycling a waste tire, which is environmentally friendly and highly economical, by reacting a waste tire with a catalyst made of synthetic ceramic in a vacuum reactor to extract recycled oil, carbon black, and activated carbon from the waste tire, thereby extracting high-purity extracts with a small amount of time and energy, thereby upcycling a large amount of waste tires, and recycling the high-purity extracts in various places.

Recently, as the spread of vehicles has accelerated, the demand for tires has increased, and the amount of waste tires has also increased accordingly. As is well known, waste tires are mainly synthetic polymer compounds, and their calorific value is about 34 MJ/kg, which is higher than the standard calorific value of coal, 29 MJ/kg.

In addition, the average composition of the tire piece, excluding the steel core and fabrics such as nylon, is 43.5 wt% SBR polymer (styrene-butadiene copolymer), 32.6 wt% carbon black, 21.7 wt% oil, and 2.2 wt% additives such as sulfur and zinc oxide.

The Ministry of Environment prohibits the use of these waste tires as fuel because burning them generates a high level of environmental pollutants such as sulfur oxides, unburned hydrocarbons, and soot.

Accordingly, methods for using waste tires other than combustion are being studied, and recycled products such as sidewalk blocks, recycled tires, recycled rubber, artificial reefs, and buffers for various structures are being commercialized. However, the scope of application is limited, and not only is waste and pollution generated in the product forming process for recycling, but there is also the problem of environmental pollution caused by waste when these products are disposed of.

Meanwhile, a method for converting waste tires into fuel without recycling them is being attempted. In converting waste tires into fuel, a thermal decomposition furnace is used to thermally decompose waste tires. Depending on the heating method of the thermal decomposition furnace, it is divided into a direct heating type and an indirect heating type.

Here, the direct heating type thermal decomposition furnace carries the risk of explosion due to the chemical reaction between the flame generated when applying heat to the waste tire and the oxygen contained in the air inside the furnace, and there is also the problem that the quality of the extracted oil deteriorates as the oil produced in the direct heating type contains moisture and free carbon.

In addition, the indirect heating method described above does not have the risk of explosion compared to the direct heating method described above, but has low thermal efficiency, so most of the oil obtained as a by-product must be used as fuel, which reduces the economic feasibility of the waste tire recycling system, and there is difficulty in processing the carbon obtained as a by-product.

Korean Patent No. 10-0609292

The present invention has been devised to solve the above-mentioned conventional problems,

The purpose of this invention is to provide an eco-friendly and highly economical waste tire upcycling process system and process method by reacting waste tires with a catalyst made of synthetic ceramic in a vacuum reactor to extract recycled oil, carbon black, and activated carbon from waste tires, thereby extracting high-purity extracts with a short time and energy, thereby upcycling a large amount of waste tires, and recycling the high-purity extracts in various places.

In addition, the purpose is to provide a waste tire upcycling process system and process method that can achieve high efficiency with less energy by supplying a heat source of 80 to 350°C to the reaction tank while applying a vacuum to the collection tank connected to the reaction tank so that the vacuum pressure of the reaction tank is lower than the vacuum pressure of the collection tank, thereby extracting the extract at low temperature and low pressure, which are lower than the high temperature and high pressure required for conventional extraction.

In order to achieve the above object, the present invention comprises: a storage tank in which waste tires shredded into pieces are stored;

A reactor connected to the storage tank, into which waste tires in the storage tank are transferred, and in which the transferred waste tires and the catalyst stored inside react with each other to extract extracts from the waste tires;

A collection tank connected to the above-mentioned reaction tank, into which the extract extracted from the reaction tank is transferred and stored;

The present invention relates to an upcycling process system for waste tires, characterized in that it comprises:

In addition, a first transfer pipe is formed between the storage tank and the reaction tank of the present invention to transfer the waste tires shredded into pieces in the storage tank to the reaction tank.

A second transfer pipe is formed between the above reaction tank and the collection tank to transfer the extract from the reaction tank to the collection tank.

The present invention relates to an upcycling process system for waste tires, characterized in that the second transport pipe further includes an air-cooled heat exchanger that cools the extract by exchanging heat with the extract transported inside.

In addition, the present invention relates to a waste tire upcycling process system, characterized in that a vacuum device for applying a vacuum to the inside of the collecting tank is connected to the collecting tank of the present invention, and the inside of the collecting tank is made vacuum by the vacuum device, so that an extract from a reaction tank is transferred into the collecting tank.

In addition, a heat source of 80 to 350°C is supplied to the reaction tank of the present invention so that the catalyst reacts with the waste tire.

The present invention relates to an upcycling process system for waste tires, characterized in that the catalyst is formed of a synthetic ceramic material to react with waste tires shredded into pieces.

In addition, the present invention relates to an upcycling process system for waste tires, characterized in that the extract of the present invention comprises regenerated oil, carbon black and activated carbon, the regenerated oil extract is transferred to a collecting tank and stored, and the carbon black and activated carbon extracts are stored in a reaction tank.

In addition, the present invention comprises a step of storing waste tires shredded into pieces in a storage tank;

A step of transporting waste tires stored in the above storage tank to a reaction tank and reacting them with a catalyst in the reaction tank;

A step of extracting an extract from waste tires through a reaction with a catalyst in the above reaction tank;

A step of transferring the extract extracted from the above reaction tank to a collection tank and storing it;

The present invention relates to a method for upcycling waste tires, characterized by including:

In addition, the present invention relates to a method for upcycling waste tires, characterized in that a vacuum device for applying a vacuum to the inside of the collecting tank is connected to the collecting tank of the present invention, and the inside of the collecting tank is made vacuum by the vacuum device, so that an extract from a reaction tank is transferred into the collecting tank.

In addition, a heat source of 80 to 350°C is supplied to the reaction tank of the present invention so that a catalyst reacts with waste tires.

The above catalyst relates to a method for upcycling waste tires, characterized in that it is formed of a synthetic ceramic material to react with waste tires shredded into pieces.

In addition, the present invention relates to a method for upcycling waste tires, characterized in that the extract of the present invention comprises regenerated oil, carbon black and activated carbon, the regenerated oil extract is transferred to a collecting tank and stored, and the carbon black and activated carbon extracts are stored in a reaction tank.

As described above, the upcycling process system and process method of the present invention for waste tires reacts waste tires with a catalyst made of synthetic ceramics in a vacuum reactor to extract recycled oil, carbon black, and activated carbon from the waste tires, thereby extracting high-purity extracts with a small amount of time and energy, thereby upcycling a large amount of waste tires, and the high-purity extracts can be recycled in various places, so that it is environmentally friendly and has high economic efficiency.

In addition, by applying a vacuum to the collecting tank connected to the above-mentioned reaction tank so that the vacuum pressure of the reaction tank is lower than that of the collecting tank while supplying a heat source of 80 to 350°C to the above-mentioned reaction tank, it is possible to extract the extract at a low temperature and low pressure, which is lower than the high temperature and high pressure required for extraction in the past, thereby achieving high efficiency with less energy.

Figure 1 is a schematic diagram showing an upcycling process system for waste tires according to one embodiment of the present invention.
Figure 2 is a flow chart showing an upcycling process method of waste tires according to one embodiment of the present invention.
Figure 3 is a graph showing a liquefaction experiment step of a waste tire according to one embodiment of the present invention.

The present invention having such features can be explained more clearly through preferred embodiments thereof.

Before explaining the various embodiments of the present invention in detail with reference to the accompanying drawings, it is to be understood that the applications thereof are not limited to the details of construction and arrangement of the components set forth in the following detailed description or illustrated in the drawings. The present invention may be embodied and practiced in other embodiments and may be carried out in various ways. It is also to be understood that expressions and terminology used herein with respect to device or element orientation (e.g., “front,” “back,” “up,” “down,” “top,” “bottom,” “left,” “right,” “lateral,” and the like) are used merely to simplify the description of the present invention and do not necessarily indicate or imply that the relevant device or element must have a particular orientation. Furthermore, terms such as “first,” “second,” and the like are used herein and in the appended claims for descriptive purposes and are not intended to indicate or imply relative importance or intent.

Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

FIG. 1 is a schematic diagram showing an upcycling process system for waste tires according to one embodiment of the present invention.

As illustrated in FIG. 1, the waste tire upcycling process system of the present invention is a depolymerization system comprising a storage tank (100) in which waste tires shredded into pieces are stored; a reaction tank (200) connected to the storage tank (100) so that the waste tires in the storage tank (100) are transferred therein, and the transferred waste tires and the catalyst (210) stored therein react with each other to extract extracts from the waste tires; a collection tank (300) connected to the reaction tank (200) so that the extracts extracted in the reaction tank (200) are transferred therein and stored; and a control unit (not illustrated) that controls the storage tank (100), the reaction tank (200), the collection tank (300), etc. In this case, the depolymerization refers to a technology of creating a monomer by reversing the polymerization process, which is a process in which a polymer material is formed.

Here, a first transfer pipe (400) is formed between the storage tank (100) and the reaction tank (200) to transfer the waste tires shredded into pieces in the storage tank (100) to the reaction tank (200), and an opening/closing valve (not shown) for opening and closing the inside is further installed in the first transfer pipe (400), and the opening/closing valve is electronically operated by the control of the control unit. At this time, a transfer device (not shown) such as a transfer motor or a transfer pump for directly transferring the waste tires is connected to the storage tank (100) or the first transfer pipe (400).

In addition, a second transfer pipe (500) is formed between the reaction tank (200) and the collection tank (300) to transfer the extract of the reaction tank (200) to the collection tank (300), and an air-cooled heat exchanger (600) is further installed in the second transfer pipe (500) to cool the extract by exchanging heat with the extract transferred inside, and an opening/closing valve (not shown) for opening/closing the inside is further installed in the second transfer pipe (500) in front and behind the air-cooled heat exchanger (600), and the opening/closing valve is electronically operated by the control of the control unit.

Inside the above reaction tank (200), a catalyst (210) that reacts with the waste tires shredded into pieces is provided. The catalyst (210) is formed into a plurality of spherical pieces made of a synthetic ceramic material and is vertically formed long inside the reaction tank (200), so that when the waste tires are filled inside the reaction tank (200), all the waste tires can come into contact with the catalyst (210) and react.

Here, a mixer (not shown) capable of mixing waste tires is further installed inside the reactor (200), and the mixer is rotated by a motor, which is controlled by a control unit.

And, in the reaction tank (200), a heat source of 80 to 350°C is supplied so that the catalyst (210) can react with the waste tire, and the heat source is supplied in various configurations and methods, such as, for example, a jacket part (not shown) is installed on the outer surface of the reaction tank (200), and heat source water having a reaction temperature is injected into the inside of the jacket part to supply the heat source to the inside of the reaction tank, or, in another example, a heat source supply device (not shown) such as a heating wire is installed on the outer surface of the reaction tank (200) to directly heat the reaction tank and supply the heat source. At this time, the temperature of the heat source is 80 to 350°C, which corresponds to a low temperature lower than the heat source (400 to 600°C) supplied previously.

A vacuum device (700) that creates a vacuum state inside the collecting tank (300) is connected to the collecting tank (300), and the vacuum device (700) sucks air into the inside of the collecting tank (300) to create a vacuum state, thereby transferring the extract of the reaction tank (200) into the collecting tank (300).

Here, when the inside of the collecting tank (300) is made into a vacuum state by the vacuum device (700), the inside of the reaction tank (200) is also made into a vacuum state through the second transfer pipe (500). At this time, since the vacuum device (700) is installed in the collecting tank (300) to suck in air, the pressure of the collecting tank (300) becomes lower than the pressure of the reaction tank (200), so that the extract of the reaction tank (200) is transferred to the collecting tank (300).

In addition, the vacuum device (700) creates and maintains a vacuum state inside the reaction tank (200) so that the waste tire and the catalyst (210) can react. At this time, the vacuum device (700) is operated under the control of the control unit.

The above extract is extracted by reacting waste tires with a catalyst (210), and the extract is divided into recycled oil, carbon black, activated carbon, iron, and synthetic gas and extracted, and the recycled oil is extracted at about 45%, the carbon black at about 25%, the activated carbon at about 10%, the iron at about 10%, and the synthetic gas at about 10% based on the weight of the waste tire, and the recycled oil is used as industrial oil for power plants, etc., the carbon black is used as a tire recycled raw material, the activated carbon is used in water purification plants, filter materials, electric vehicle batteries, cathode materials, etc., the iron is used as fuel for factories, and the synthetic gas is reused in the system of the present invention.

Here, the above-mentioned regenerated oil extract is transferred to a collection tank (300) and stored, and then transferred to a place of use, and the above-mentioned carbon black, activated carbon, and iron extract are stored in a reaction tank (200), and then transferred from the reaction tank (200) to a place of use when the system is completed. At this time, the above-mentioned synthesis gas is transferred to be reused as a heat source for the system of the present invention.

Below, the process method for the upcycling process system for waste tires described above is described.

FIG. 2 is a flow chart showing an upcycling process method for waste tires according to an embodiment of the present invention, and FIG. 3 is a graph showing a liquefaction experiment step for waste tires according to an embodiment of the present invention.

As illustrated in FIGS. 2 and 3, the upcycling process method of waste tires of the present invention comprises the steps of: storing waste tires shredded into pieces in a storage tank (100); transferring the waste tires stored in the storage tank (100) to a reaction tank (200) and reacting them with a catalyst (210) in the reaction tank (200); extracting an extract from the waste tire through a reaction with the catalyst (210) in the reaction tank (200); and transferring the extract extracted in the reaction tank (200) to a collection tank (300) and storing it.

Here, in the step of transporting the waste tires stored in the storage tank (100) to the reaction tank (200) and reacting them with the catalyst (210) of the reaction tank (200), a vacuum device (700) that applies a vacuum to the inside of the collection tank (300) is connected to the collection tank (300), and as the inside of the collection tank (300) becomes vacuumed by the vacuum device (700), the inside of the reaction tank (200) also becomes vacuumed, thereby creating an environment in which the waste tires can react with the catalyst (210).

And, in the step of transporting the waste tires stored in the storage tank (100) to the reaction tank (200) and reacting them with the catalyst (210) of the reaction tank (200), a low-temperature heat source of 80 to 350°C is supplied to the reaction tank (200) so that the catalyst (210) reacts with the waste tires.

In addition, in the step of transporting the waste tires stored in the storage tank (100) to the reaction tank (200) and reacting them with the catalyst (210) of the reaction tank (200), the catalyst (210) is formed of a synthetic ceramic material so as to react with the waste tires shredded into pieces.

And, in the step of extracting an extract from a waste tire through a reaction with a catalyst (210) in the above reaction tank (200), the extract is divided into recycled oil, carbon black, and activated carbon, and [Table 1] below shows the components extracted through the experiment of FIG. 3.

As seen in the above [Table 1], when considering the distribution of components, most of them are composed of cyclic compounds that can be used in the rubber industry, and in particular, p-Xylene, cyclohexene, and benzene are substances with high utility in the retread tire industry, and other additives also appear to be usable in the retread tire industry.

100 : Storage tank 200 : Reaction tank
210 : Catalyst 300 : Catch tank
400: 1st transfer pipe 500: 2nd transfer pipe
600 : Air-cooled heat exchanger 700 : Vacuum device

Claims (9)

A storage tank (100) in which waste tires shredded into pieces are stored;
A reactor (200) connected to the storage tank (100) so that waste tires in the storage tank (100) are transferred inside, and the transferred waste tires and the catalyst (210) stored inside react with each other to extract extracts from the waste tires;
It is configured to include a collection tank (300) connected to the above reaction tank (200) and in which the extract extracted from the reaction tank (200) is transferred and stored inside;
Between the storage tank (100) and the reaction tank (200), a first transfer pipe (400) is formed to transfer the shredded waste tires in the storage tank (100) to the reaction tank (200).
Between the above reaction tank (200) and the collection tank (300), a second transfer pipe (500) is formed to transfer the extract of the reaction tank (200) to the collection tank (300).
In the above second transport pipe (500), an air-cooled heat exchanger (600) is further installed to cool the extract by exchanging heat with the extract transported inside.
A vacuum device (700) that creates a vacuum inside the collecting tank (300) is connected to the collecting tank (300), and the inside of the collecting tank (300) is vacuumed by the vacuum device (700), so that the extract from the reaction tank (200) is transferred into the collecting tank (300).
In the above reaction tank (200), a heat source of 80 to 300°C is supplied so that a catalyst (210) reacts with waste tires, and the catalyst (210) is formed of a synthetic ceramic material so that it reacts with waste tires shredded into pieces, and the catalyst (210) is formed in a spherical shape in multiple pieces and is vertically long inside the reaction tank (200), so that when waste tires are filled inside the reaction tank (200), all waste tires can come into contact with the catalyst (210) and react.
A waste tire upcycling process system, characterized in that the extract is composed of regenerated oil, carbon black and activated carbon, the regenerated oil extract is transferred to a collection tank (300) and stored, and the carbon black and activated carbon extracts are stored in a reaction tank (200).
delete delete delete delete A step of storing shredded waste tires in a storage tank (100);
A step of transporting the waste tires stored in the storage tank (100) to a reaction tank (200) and reacting them with a catalyst (210) in the reaction tank (200);
A step of extracting an extract from waste tires through a reaction with a catalyst (210) in the above reaction tank (200);
A step of transporting and storing the extract extracted from the above reaction tank (200) to a collection tank (300);
A vacuum device (700) that creates a vacuum inside the collecting tank (300) is connected to the collecting tank (300), and the inside of the collecting tank (300) is vacuumed by the vacuum device (700), so that the extract from the reaction tank (200) is transferred into the collecting tank (300).
In the above reaction tank (200), a heat source of 80 to 300°C is supplied so that a catalyst (210) reacts with waste tires, and the catalyst (210) is formed of a synthetic ceramic material so that it reacts with waste tires shredded into pieces, and the catalyst (210) is formed in a spherical shape in multiple pieces and is vertically formed long inside the reaction tank (200), so that when waste tires are filled inside the reaction tank (200), all waste tires can come into contact with the catalyst (210) and react.
A method for upcycling waste tires, characterized in that the extract comprises regenerated oil, carbon black and activated carbon, the regenerated oil extract is transferred to a collection tank (300) and stored, and the carbon black and activated carbon extracts are stored in a reaction tank (200).
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