CA2750327A1

CA2750327A1 - Carbon treatment system for supplying decomposition heat to waste tires

Info

Publication number: CA2750327A1
Application number: CA2750327A
Authority: CA
Inventors: Yeong Min Jeon
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-22
Filing date: 2009-11-23
Publication date: 2010-07-29
Also published as: WO2010085038A2; EP2381173A2; KR100896789B1; BRPI0920484A2; US20110290162A1; CN102292597A; WO2010085038A3

Abstract

The present invention relates to a carbon treatment system for supplying decomposition heat to waste tires. The carbon treatment system of the present invention comprises: a carbon storage tank which receives carbon separated from a thermal decomposition furnace for thermally decomposing waste tires and which stores the received carbon; a burner which receives oil or gas contained in the steam generated during a process of thermally decomposing waste tires, and burns the received oil or gas; and a combustion furnace arranged at one side of the burner to burn the carbon supplied by the carbon storage tank using the burner as an ignition source and to supply heat generated during the combustion to the thermal decomposition furnace.
The thus-configured system of the present invention completely burns the carbon separated from waste tires to prevent contamination and reutilizes the heat generated during combustion to maximize the economical operation thereof, and therefore is of great industrial usefulness.

Description

CARBON TREATMENT SYSTEM FOR SUPPLYING
DECOMPOSITION HEAT TO WASTE TIRES
TECHNICAL FIELD

[1] The present invention relates to a system for treating carbon generated during the decomposition process in a system for recycling waste tires comprising thermally decomposing waste tires that are industrial waste by direct heating, and separating and extracting various energy sources to be recycled. More particularly, the present invention relates to a carbon treatment system for supplying decomposition heat to waste tires that secures economic feasibility so that the heat generated during combustion can be recycled while increasing convenience in maintenance by simplifying the structure.

BACKGROUND ART

[2] Recently, as the demand for vehicles is sharply on the rise, so does for tires increases.
Accordingly, the quantity of waste tires also increases. As well known, waste tires are mainly made of synthetic polymer compounds, having about 34 MJ/kg of heating value, which is higher than the reference heating value of coal, 29MJ/kg.

[3] Further, except for iron core, fabrics such as nylon, etc., the average composition of a piece of tire is composed of 43.5 wt% of styrene-butadiene copolymer (SBR
polymer), 32.6 wt% of carbon black, 21.7 wt% of oil, and 2.2 wt% of additives such as sulfur, zinc oxide, etc.

[4] When combusting such waste tires, environmental contaminants such as sulfur oxides, unburned hydrocarbon, harmful gas, etc. are significantly emitted. Thus, the Ministry of Environment prohibits the use of waste tires as fuel.

[5] Accordingly, ways of using waste tires other than by combustion have been studied, and recycled products such as sidewalk blocks, reproduced tires, reproduced rubbers, artificial reefs, buffers of various structures, etc. are being produced, but to a limited scope. Further, in a product molding process for recycling, wastes and air pollution are another concern. In addition, there is still a problem of environmental contamination caused by wastes produced when the recycled products are discarded.

[6] Meanwhile, methods for transforming the waste tires into fuel, not for recycling them have been attempted. For such transformation of waste tires into fuel, thermal decomposition furnaces for thermally decomposing waste tires are employed.
According to heating methods, thermal decomposition furnaces are divided into direct heating type thermal decomposition furnaces and indirect heating type thermal decomposition furnaces.

[7] Here, direct heating type thermal decomposition furnaces could face explosion caused by chemical reaction of spark produced when heating waste tires with oxygen within the thermal decomposition furnaces. Further, the oil produced from direct heating type thermal decomposition furnaces contains moisture and free carbon, which deteriorate the quality of the extracted oil.

[8] Meanwhile, indirect heating type thermal decomposition furnaces do not have danger of explosion of direct heating type thermal decomposition furnaces as explained above.
However, because of low thermal efficiency, most of the oil obtained as a by-product has to be used as fuel. Thus, waste tires recycling systems wherein indirect heating type thermal decomposition furnaces are employed are economically infeasible and it is difficult to deal with carbon obtained as a by-product.

[9] In order to solve the above problems, the present applicant filed an application for a waste tire recycling system comprising extracting oil from waste tires by direct heating, and purifying the extracted oil to separate it into gasoline or diesel. The application has matured into Korean Patent No. 10-0628890.

[10] In brief review of the waste tire recycling system registered by the present applicant, the system is designed to put waste tires into a thermal decomposition furnace, float a carrier gas to extract and purify oil generated from the tires, and recycle gas as energy sources of the system.

[11] Meanwhile, the system is designed to incinerate waste carbon separated during a process of thermally decomposing waste tires, and resupply the heat generated therefrom to the thermal decomposition furnace.

[12] However, the waste tire recycling system already filed by the present applicant has a disadvantage that smooth incineration is not achieved in simple incineration of carbon, which results in significantly deteriorating operation efficiency of the entire system.

DETAILED DESCRIPTION OF THE INVENTION
TECHNICAL SUBJECT

[13] The present invention has been created in order to solve the above problems that existing techniques have. The present invention is to provide a carbon treatment system for supplying decomposition heat to waste tires, capable of preventing the generation of contaminants by increasing incineration efficiency of waste carbon contained in waste tires, and supplying heat source generated in combustion of carbon to a thermal decomposition furnace for thermally decomposing waste tires to maximize the economical operation thereof.

MEANS FOR SOLVING THE SUBJECT

[14] In order to achieve the above objects, a carbon treatment system for supplying decomposition heat to waste tires according to a desirable embodiment of the present invention is characterized by comprising a carbon storage tank which receives carbon separated from a thermal decomposition furnace for thermally decomposing waste tires;
a burner which receives oil or gas contained in the steam generated during a process of thermally decomposing waste tires and burns the received oil or gas; and a combustion furnace arranged at one side of the burner to burn the carbon supplied by the carbon storage tank using the burner as an ignition source and connected to the thermal decomposition furnace (3) by pipe to supply heat generated during the combustion to the thermal decomposition furnace.

[15] A desirable characteristic according to the present invention lies in that the combustion furnace is connected to the carbon storage tank by a carbon supplying pipe to receive carbon from the carbon storage tank, and is connected to the thermal decomposition furnace by a heat source suuplying pipe and to supply heat generated to the thermal decomposition furnace when burning carbon.

[16] Another desirable characteristic according to the present invention lies in that the burner is configured to discharge flame at the bottom of inside the combustion furnace, and the combustion furnace is connected by pipe to inlet carbon to the upper side of the flame.

[17] Another desirable characteristic according to the present invention lies in that the combustion furnace is configured to comprise a blowing element at one side so that the carbon supplied can be scattered.

[18] Another desirable characteristic according to the present invention lies in that the combustion furnace is arranged with a plate-type combustion plate punched with holes in same intervals at one part of inside the plate, and that a pipe to inlet carbon is located above the combustion plate and a burner discharging flame is located below the combustion plate.

[19] Another desirable characteristic according to the present invention lies in that the upper part of the combustion plate comprises a plurality of heat congestion plates placed to intercross each other at intervals in a direction horizontal to each other, so that the heat generated during the combustion process is congested.

[20] Another desirable characteristic according to the present invention lies in that a transfer screw rotating in one direction by driving force of driving source is installed in the carbon supplying pipe connecting the combustion furnace and the carbon storage tank.

[21] Another desirable characteristic according to the present invention lies in that the blowing element is a blow fan that operates the fan which receives power supply from outside.

[22] Another desirable characteristic according to the present invention lies in that the combustion furnace is connected to a cleaning distillation tower by piping to remove contaminants generated while burning carbon.

[23] A system for supplying decomposition heat to waste tires according to another desirable embodiment of the present invention is characterized by comprising a carbon storage tank which receives carbon in powder state; a burner which receives oil or gas from outside and burns the received oil or gas; a combustion furnace to which an exhaust pipe is connected to discharge heat generated and is connected to the carbon storage tank arranged at one side where carbon is supplied therefrom using the burner as ignition source; a transfer element comprising a driving motor installed at the pipe connecting the carbon storage tank and the combustion furnace to supply power to the element transferring carbon and generate driving force, and a transfer screw connected to the driving motor to rotate in one direction inside the pipe; a carbon detector detecting the amount of carbon stored in the carbon storage tank; a temperature detector detecting the temperature of the burner; and a controller electronically connected to the carbon detector and temperature detector to receive detection information, so as to selectively control operation of the driving motor.

[24] The characteristics and advantages according to the present invention will be more clear by the following detailed descriptions based on the accompanying drawings.
Meanwhile, the terms or words used in the specification and claims should not be interpreted as conventional and dictionary meanings, but should be interpreted as meanings and concepts in accordance with the technical idea of the present invention based on the principle that inventors can appropriately define concepts of terms in order to explain the invention the best possible way.

EFFECT OF THE INVENTION

[25] The thus-configured carbon treatment system for supplying decomposition heat to waste tires of the present invention completely burns the carbon separated from waste tires to prevent contamination and reutilizes the heat generated during combustion to maximize the economical operation thereof, and therefore is of great industrial usefulness.

BRIEF DISCRIPTION OF DRAWINGS

[26] Fig. 1 is a schematic drawing for explaining a carbon treatment system for supplying decomposition heat to waste tires according to the present invention.

[27] Fig. 2 is a drawing briefly showing a control circuit of a controller according to the present invention.

BEST EMBODIMENTS FOR CARRYING OUT THE INVENTION

[28] The objects, characteristics and advantages of the present invention described above will be more apparent by the following detailed descriptions.

[29] Hereinafter, with reference to the accompanying drawings, the desirable embodiment of the present invention will be described as follows.

[30] First of all, it should be noted that in the Figures, the same constitutional elements or components are represented by the same reference numerals as possible. In describing the present invention, detailed explanations about relevant known functions or configurations are omitted in order not to make the gist of the present invention ambiguous.
[31 ] Fig. 1 is a schematic drawing for explaining a carbon treatment system for supplying decomposition heat to waste tires according to the present invention, and Fig.
2 is a drawing briefly showing a control circuit of a controller (c) according to the present invention.
[32] First, a known thermal decomposition furnace (3) for thermally decomposing waste tires extracts oil and incondensible gas during a process of thermally decomposing inputted waste tires, and separates carbon and iron core, which are residues.
The present invention relates to a system for incinerating and treating carbon among residues which are separated during a process for thermally decomposing waste tires.
[33] With reference to the drawings, the present invention is configured to comprise a carbon storage tank (10) which receives carbon separated from a thermal decomposition furnace (3), a combustion furnace (30) that is connected by a pipe to the carbon storage tank (10) to selectively receive carbon and burn the carbon, and a burner (20) arranged at one side of the combustion furnace (30) to discharge flame inside the combustion furnace (30) to burn the carbon.
[34] The carbon storage tank (10) is connected to the thermal decomposition furnace (3) by a carbon supplying pipe (15a) to supply carbon, and is connected to the thermal decomposition furnace (3) by a heat source supplying pipe (15b) to supply heat generated during the combustion of carbon to the thermal decomposition furnace (3).
[35] Further, the carbon storage tank (10) is desirable to be connected to a cleaning distillation tower (40) to remove residual contaminants generated while burning carbon.
Here, the cleaning distillation tower (40) may be performed by various known techniques, and thus the detailed explanation thereon is omitted.
[36] Meanwhile, the drawings of the present invention exemplify a case where the carbon storage tank (10) is connected by piping to the thermal decomposition furnace (3).
However, in case where it is difficult for the carbon storage tank (10) to directly be connected to the thermal decomposition furnace (3) positionally, it may be modified to the form of inputting collected carbon.
[37] In addition, in the carbon storage tank (10) of the present invention, the carbon supplying pipe (15a) is an element for inserting and moving the carbon into the carbon storage tank (10), and a driving motor (16) that is the driving source receiving power from outside to generate driving force and a transfer screw (17) connected to the driving motor (16) and receiving the driving force to rotate in one direction, the transfer screw arranged inside the carbon supplying pipe (15a), are additionally installed.
[38] A burner (20) is a device for receiving gas or oil from outside to burn using the received gas or oil as fuel. Here, it may be configured to supply the fuel from outside, or configured to receive oil or gas included in vapor generated in the thermal decomposition process of the thermal decomposition furnace (3) to burn using the received oil or gas as fuel. The burner (20) could be carried out by known technologies, so its detailed description will be omitted.
[39] The burner (20) of the present invention is configured to be arranged at the bottom of inside the combustion furnace (30) and discharge flame to the upper side of the combustion furnace (30) to burn the inlet carbon to the upper side of the flame.
[40] The burner (20) having such configuration is integrally comprised with the combustion furnace (30) to be described below.
[41 ] The combustion furnace (30) is one type of incinerator, which is arranged at one side of the burner (20) and burns carbon supplied from the carbon storage tank (10) using the burner as an ignition source. Such combustion furnace (30) is piped to supply heat generated in the combustion process of carbon to the thermal decomposition furnace (3).
[42] In other words, the combustion furnace (30) is connected to the carbon storage tank (10) by the carbon supplying pipe (15a) to receive carbon from the carbon storage tank (10), and is connected to the thermal decomposition furnace (3) by the heat source supplying pipe (15b) to supply heat generated when carbon is burned to the thermal decomposition furnace (3). Here, the carbon supplying pipe (15a) and the heat source supplying pipe (15b) may be configured to be selectively regulated by a valve.
[43] Meanwhile, the combustion furnace (30) is configured to receive blow through a blowing element (40) at an inner side so that the carbon supplied through the carbon supplying pipe (15a) can be smoothly burned inside. Here, as the blowing element (40), it is suggested to use the known blow fan receiving power from outside and rotating a fan to make breeze.
[44] In addition, the combustion furnace (30) of the present invention is arranged with a plate-type combustion plate (33) punched with holes in same intervals at one part inside the plate, and that the carbon supplying pipe (15a) inletting carbon is located above the combustion plate (33) and a burner (20) discharging flame is located below the combustion plate (33).
[45] The carbon inserted into the upper side of the combustion furnace (30) by such configuration is scattered by the blowing element (40) to be burned, and non-burned carbon is dropped at the upper surface of the punched combustion plate (33) to be burned.
[46] Meanwhile, the present invention suggests the configuration wherein in the combustion furnace (30), at the upper part of the combustion plate (33), a plurality of heat congestion plates (25) is placed to intercross each other at intervals in a direction perpendicular to each other, so that the heat generated during the combustion process is not to discharge to the heat source supplying pipe (15b) with fast speed.
[47] From such configuration, the heat generated in the combustion furnace (30) may congest the flow discharged to the heat source supplying pipe (15b) by the plurality of heat congestion plates (25).
[48] The carbon treatment system for supplying decomposition heat to decompose waste tires according to the present invention with the above configuration is preferably suggested to be connected to the thermal decomposition furnace (3), directly receive carbon to burn the carbon, and supply heat generated in the combustion process to the thermal decomposition furnace (3). However, in case where it is structurally difficult piping to the thermal decomposition furnace (3), they could be operated independently.
[49] For example, the system may be configured to comprise a carbon storage tank (10) comprising a hopper to receive carbon collected from outside and use heat generated in the combustion process of the combustion furnace (30) receiving the carbon from the carbon storage tank (10) as industrial or home heat source.
[50] Fig. 2 is a schematic diagram briefly showing a control circuit of a controller according to the present invention.
[51 ] As shown in Fig. 2, the carbon treatment system (1) for supplying decomposition heat to decompose waste tires in the present embodiment comprises a carbon storage tank (10) which receives carbon powder with the particle size of 10gm-5mm and stores the carbon; a burner (20) arranged at one side of the carbon storage tank (10), which receives oil or gas from outside to generate flame; a combustion furnace (30) that is one type of incinerator, using the burner (20) as an ignition source and connected to the carbon storage tank (10) arranged at one side to selectively receive carbon to burn the carbon; a transfer element supplying the carbon stored in the carbon storage tank (10) into the combustion furnace (30); respective detectors (sl, s2) detecting the amount of carbon and the temperature of the burner (20); and a controller (c) receiving detecting signals from these detectors (sl, s2) to control the transfer element.
[52] First, the carbon storage tank (10) is substantially the same as the configuration of one embodiment mentioned above. However, this may be independently operated without directly piping to the thermal decomposition furnace (3), and may collect waste carbon generated in the industrial sites or a waste tires recycling system and insert it. Further, the burner (20), the combustion furnace (30) and the transfer element are substantially the same as the configurations of the embodiment mentioned above, and thus their detailed descriptions will be omitted.
[53] In the present embodiment, the carbon detector (sl) detecting the amount of carbon stored in the carbon storage tank (10), and a temeperature detector (s2) detecting the temperature of the burner (20) are additionally installed, and a controller (c) electrically connected to these detectors (sl, s2) to receive detection information, so as to selectively control operation of the driving motor (16) configuring the transfer element.
[54] For example, if the carbon stored in the carbon storage tank (10) is less then a preset value, the carbon detector (sl) sends the detection signal to the controller (c) to stop the operation of the system.
[55] In addition, in case where the amount of carbon stored in the carbon storage tank (10) is at a proper level, if the temperature of the burner (20) is less than 300 , the temperature detector (s2) sends the detection signal to the driving motor (16) so as not to inlet the carbon into the combustion furnace (30) to prevent the incomplete combustion.
[56] Meanwhile, the present invention is not limited to examples described above, and it is apparent to those skilled in the art that various alternatives, modifications and variations can be made without departing from the idea and scope of the invention. Thus, such variations and modifications fall within the scope of the claims of the present invention.

Claims

What is claimed is:

1. A carbon treatment system for supplying decomposition heat to waste tires, characterized by comprising: a carbon storage tank (10) which receives carbon separated from a thermal decomposition furnace (3) for thermally decomposing waste tires; a burner (20) which receives oil or gas contained in the steam generated during a process of thermally decomposing waste tires and burns the received oil or gas; and a combustion furnace (30) arranged at one side of the burner (20) to burn the carbon supplied by the carbon storage tank (10) using the burner as an ignition source and connected to the thermal decomposition furnace (3) by pipe to supply heat generated during the combustion to the thermal decomposition furnace (3).

2. The carbon treatment system for supplying decomposition heat to waste tires according to Claim 1, characterized in that the combustion furnace (30) is connected to the carbon storage tank (10) by a carbon supplying pipe (15a) to receive carbon from the carbon storage tank (10), and is connected to the thermal decomposition furnace (3) by a heat source supplying pipe (15b) to supply heat generated to the thermal decomposition furnace (3) when burning carbon.

3. The carbon treatment system for supplying decomposition heat to waste tires according to Claim 1, characterized in that the burner (20) is configured to discharge flame at the bottom of inside the combustion furnace (30), and the combustion furnace (30) is connected by pipe to inlet carbon to the upper side of the flame.

4. The carbon treatment system for supplying decomposition heat to waste tires according to any one of Claims 1 to 3, characterized in that the combustion furnace (30) is configured to comprise a blowing element (40) at one side so that the carbon supplied can be scattered.

5. The carbon treatment system for supplying decomposition heat to waste tires according to any one of Claims 1 to 3, characterized in that the combustion furnace (30) is arranged with a plate-type combustion plate (33) punched with holes in same intervals at one part of inside the plate, and that a pipe to inlet carbon is located above the combustion plate (33) and a burner (20) discharging flame is located below the combustion plate (33).

6. The carbon treatment system for supplying decomposition heat to waste tires according to any one of Claims 1 to 3, characterized in that the upper part of the combustion plate (33) comprises a plurality of heat congestion plates (25) placed to intercross each other at intervals in a direction horizontal to each other, so that the heat generated during the combustion process is congested.

7. The carbon treatment system for supplying decomposition heat to waste tires according to Claim 1 or 2, characterized in that a transfer screw (17) rotating in one direction by driving force of driving source is installed in the carbon supplying pipe (15a) connecting the combustion furnace and the carbon storage tank.

8. The carbon treatment system for supplying decomposition heat to waste tires according to Claim 4, characterized in that the blowing element (40) is a blow fan.

9. The carbon treatment system for supplying decomposition heat to waste tires according to Claim 1, characterized in that the combustion furnace (30) is connected to a cleaning distillation tower (50) by piping to remove contaminants generated while burning carbon.

10. A carbon treatment system for supplying decomposition heat to waste tires, characterized by comprising: a carbon storage tank (10) which receives carbon in powder state;
a burner (20) which receives oil or gas from outside and burns the received oil or gas; a combustion furnace (30) to which an exhaust pipe is connected to discharge heat generated and is connected to the carbon storage tank (10) arranged at one side where carbon is supplied therefrom using the burner (20) as ignition source; a transfer element comprising a driving motor (16) installed at the pipe connecting the carbon storage tank (10) and the combustion furnace (30) to supply power to the element transferring carbon and generate driving force, and a transfer screw (17) connected to the driving motor (16) to rotate in one direction inside the pipe; a carbon detector (s1) detecting the amount of carbon stored in the carbon storage tank (10); a temperature detector (s2) detecting the temperature of the burner (20); and a controller (c) electronically connected to the carbon detector (s1) and temperature detector (s2) to receive detection information, so as to selectively control operation of the driving motor (16).