KR20230172983A - Oil treatment apparatus capable of sludge circulation treatment and continuous type waste synthetic resin pyrolysis treatment facility using thereof - Google Patents

Abstract

The present invention allows the entire process of inputting, stirring, compressing, and supplying waste synthetic resin to proceed automatically and continuously, and supplies the sludge accumulating at the bottom of the oil storage tank to the pyrolysis treatment firebox to enable oil and gas reproduction. Additionally, a separate The present invention relates to an oil treatment device capable of sludge circulation treatment that can maintain a constant temperature in an oil storage tank by circulating oil heated by an oil vapor heat exchanger without a heating heater, and a continuous waste synthetic resin pyrolysis treatment facility including the same.

Description

Oil treatment device capable of sludge circulation treatment and continuous waste synthetic resin pyrolysis treatment facility including the same

The present invention relates to an oil processing device capable of sludge circulation processing and a continuous pulmonary pyrolysis processing facility comprising the same, more specifically, in which the entire process of input, stirring, compression and supply of lung resin resin is automatically continuous. In addition, the sludge accumulating at the bottom of the oil storage tank is supplied to the pyrolysis treatment firebox to enable oil and gas reproduction, and the oil heated by the oil vapor heat exchanger is circulated without a separate heater to maintain a constant temperature in the oil storage tank. It relates to an oil treatment device capable of sludge circulation treatment and a continuous waste synthetic resin pyrolysis treatment facility including the same.

Products made of synthetic resin, such as tires, vinyl, and plastic, which are widely used in various industrial fields and daily life, are recycled after use, and most are classified as waste and are landfilled or incinerated. These synthetic resin wastes are considerably larger in volume compared to their weight, so not only are landfill costs greater than regular waste, but they do not rot even when landfilled, so they are considered a social nuisance.

Recently, as a way to recycle synthetic resin waste without incinerating or landfilling it, research and development of emulsification methods and devices that can obtain useful oil by pyrolyzing synthetic resin waste has been actively conducted.

Conventionally, waste synthetic resin had to be added manually, so each time the material was added, the pyrolysis treatment device was stopped and a certain period of time passed before the material was added. This caused not only the inconvenience caused by adding the material, but also extremely low work efficiency. Because there are many problems, such as a significant decrease in productivity, there is a need to develop technology that can continuously operate the device and automatically input materials.

Accordingly, in the current pyrolysis treatment facility, a method of sequentially pyrolyzing waste through a plurality of transfer screws has been proposed. However, this pyrolysis device cannot increase the temperature at each stage, so the firebox temperature must be increased by increasing the supply heat source gas, so it has a large capacity. A burner was required, and there was a problem of clogging of the oil vapor duct and a large amount of tar being generated from the produced oil.

In addition, in the case of an oil storage tank that stores oil produced through thermal decomposition, foreign substances (tar or sludge) accumulate at the bottom of the tank when the oil is stored for a long time. Conventionally, this must be discharged to the outside and treated through a separate treatment process. In addition, when storing oil for a long period of time, the temperature of the oil inside the tank may decrease, so in order to maintain the temperature, a separate heater must be installed in the tank itself to continuously warm the oil, resulting in maintenance costs.

Korean Patent Publication No. 10-2016-0123516 Korean Patent Publication No. 10-2011-0075085 Korean Patent No. 10-2105183 Korean Patent No. 10-1379225

The present invention is intended to solve the above-mentioned problems. The entire process of inputting, stirring, compressing and supplying waste synthetic resin is carried out automatically and continuously, and the sludge accumulating at the bottom of the oil storage tank is supplied to the pyrolysis treatment chamber to produce oil and gas. An oil treatment device capable of sludge circulation treatment that enables reproducibility and maintains a constant temperature in the oil storage tank by circulating oil heated by an oil vapor heat exchanger without a separate heating heater, and a continuous waste synthetic resin containing the same We would like to provide thermal decomposition processing facilities.

An oil treatment device capable of sludge circulation treatment according to an embodiment of the present invention includes an oil collection tank 110 in which oil discharged from the oil vapor heat exchange device is collected, is connected to the oil collection tank 110, and includes an oil collection tank ( It includes an oil storage tank 120 that stores the oil transferred from 110) and a sludge supply pump 130 that supplies sludge accumulated in the lower inner part of the oil storage tank 120 to the firebox in the pyrolysis treatment unit to allow pyrolysis treatment to proceed. can do.

In one embodiment, when the oil collection tank 110 determines that the oil temperature in the oil storage tank 120 falls below a preset temperature, the oil in the oil collection tank 110 is transferred to the oil vapor heat exchange device. It can be transferred to raise the temperature and then transferred to the oil storage tank 120.

In one embodiment, the sludge transfer pump 130 is connected to the firebox in the pyrolysis treatment unit through a pipe, and one side is branched and connected to the oil collection tank 110, so that the temperature in the oil storage tank 120 is increased. The lowered oil can be transferred to the oil collection tank 110.

In one embodiment, the sludge transfer pump 130 may adjust the amount of sludge supplied to the firebox in the pyrolysis treatment unit according to the temperature of the waste synthetic resin input portion of the firebox in the pyrolysis treatment unit.

In one embodiment, the sludge transfer pump 130 may individually adjust the amount of sludge supplied to the firebox in each pyrolysis treatment unit according to the temperature of each of the pair of waste synthetic resin input units provided in the firebox in the pyrolysis treatment unit.

A continuous waste synthetic resin pyrolysis treatment facility including an oil treatment device capable of sludge circulation treatment according to another embodiment of the present invention includes a waste synthetic resin input unit 210, a pyrolysis treatment unit 220, and a waste synthetic resin input unit 210, a pyrolysis treatment unit 220, and the pyrolysis treatment unit 220. A tea processing unit 230 that processes tea, an oil vapor heat exchange unit 240 that cools the oil vapor generated from the pyrolysis processing unit 220 and separates it into oil and gas, and an oil vapor heat exchanger that collects the oil discharged from the oil vapor heat exchange device. A collection tank 251, an oil storage tank 252 that is connected to the oil collection tank 251 and stores oil transferred from the oil collection tank 251, and sludge accumulated in the lower inner part of the oil storage tank 252. It includes a sludge supply pump 253 that supplies sludge to the firebox in the pyrolysis treatment unit to allow pyrolysis treatment to proceed, and an oil treatment unit 250 that stores oil separated through the oil vapor heat exchange unit 240 and the oil vapor heat exchange unit 240. ) may include a gas processing unit 260 that cools and stores the separated gas.

In one embodiment, the waste synthetic resin input unit 210 includes an articulated crane for inputting the waste synthetic resin, a hopper for receiving the input waste synthetic resin, and a pair of devices installed in the longitudinal direction within the hopper and stirring the input waste synthetic resin. A stirring screw, installed longitudinally on the lower side of the hopper, a pair of compression screws that supply and simultaneously compress the agitated waste synthetic resin in one direction, installed to be vertically connected at one end of the pair of compression screws, A pair of vertical stirring screws that transport the transported waste synthetic resin downward and at the same time release the compressed waste synthetic resin, and a pair of vertical stirring screws that are connected to each vertical stirring screw and supply the transferred waste synthetic resin to the pyrolysis transfer path. May include a feed screw.

In one embodiment, the tea processing unit 230 has a residue discharge communication passage connected in communication to receive the tea generated in the pyrolysis treatment unit 220, and a first residue treatment transport connected to the residue discharge communication passage at one end. A screw conveyor, a second residue treatment transfer screw conveyor connected in communication with the transfer end of the first residue treatment transfer screw conveyor, a third residue treatment transfer screw conveyor connected in communication with the transfer end of the second residue treatment transfer screw conveyor, and the above. It may include a treatment residue storage tank for storing tea that is transferred and discharged from the third residue treatment transfer screw conveyor.

In one embodiment, the oil vapor heat exchange unit 240 has a plurality of oil vapor supply pipes, one end of which is connected to the pair of multi-stage pyrolysis transfer screw conveyors 224, and exchanges oil vapor flowing in from the plurality of oil vapor supply pipes for the following oil vapor heat exchange. An oil vapor transfer screw conveyor configured to transfer oil vapor to a gas, a plurality of oil vapor heat exchangers configured to receive oil vapor from the oil vapor transfer screw conveyor and cool it in multiple stages to separate it into oil and gas, and a communication connection to the lower end of each of the plurality of oil vapor heat exchangers. It may include a pyrolysis oil transfer screw conveyor that transfers the separated pyrolysis oil to one side, and a cooling medium circulation unit configured to supply and recover the cooling medium to each of the plurality of oil vapor heat exchangers.

In one embodiment, the gas processing unit 260 includes a plurality of pyrolysis oil cooling towers that receive the pyrolysis gas from the oil vapor heat exchange unit 240 and cool it in a multi-stage manner, and receive the pyrolysis gas from the pyrolysis oil cooling tower and separate oil and water. A separator, a gas blower for transporting one or more gas storage tanks that sucks pyrolysis gas from the oil-water separator and supplies it to the following gas storage tank, a gas storage tank that stores the gas sucked in by the gas blower for transporting the gas storage tank, and the gas. It may include a gas burner gas supply tank that receives gas from a storage tank and stores gas to be supplied to the gas burner included in the pyrolysis processing unit 220.

According to one aspect of the present invention, the sludge accumulating at the bottom of the oil storage tank is supplied to the pyrolysis treatment firebox to enable oil and gas reproduction, and the oil heated by the oil vapor heat exchanger is circulated without a separate heating heater to maintain the oil storage tank. Since the temperature can be kept constant, it has the advantage of not incurring separate temperature maintenance costs.

In addition, according to one aspect of the present invention, the compression force of the waste synthetic resin can be kept constant based on PID control, which has the advantage of minimizing the decrease in thermal decomposition efficiency and enabling stable operation of the supply screw.

In addition, according to one aspect of the present invention, by detecting abnormal signs in real time based on the rotational speed of the gas blower or the pressure value of the gas storage tank in the automatic operation mode, it is possible to block factors that may cause overload of the facility in advance. , it has the advantage of preventing overload of equipment by adjusting the rotation direction of each screw to the forward or reverse direction when foreign matter is mixed.

Figure 1 is a diagram showing the configuration of an oil treatment device 100 capable of sludge circulation treatment according to an embodiment of the present invention.
FIG. 2 is a diagram showing the overall configuration of a continuous waste synthetic resin pyrolysis treatment facility 200 including an oil treatment device capable of sludge circulation treatment shown in FIG. 1.

Below, preferred embodiments are presented to aid understanding of the present invention. However, the following examples are provided only to make the present invention easier to understand, and the content of the present invention is not limited by the examples.

Figure 1 is a diagram showing the configuration of an oil treatment device 100 capable of sludge circulation treatment according to an embodiment of the present invention.

Referring to Figure 1, an oil treatment device 100 capable of sludge circulation treatment according to an embodiment of the present invention is configured to transport and store oil (i.e., pyrolysis oil) separated from the oil vapor heat exchange device. To this end, the oil treatment device 100 capable of sludge circulation treatment may be largely configured to include an oil collection tank 110, an oil storage tank 120, and a sludge supply pump 130.

In addition, it further includes an oil injection pump that transfers the pyrolysis oil collected in the oil collection tank 110 to the oil cooling tower, and an oil cooling tower that receives the oil transferred to the oil injection pump, cools it, and then supplies it to the oil vapor heat exchanger on the most upstream side. It can be configured as follows.

The oil treatment device 100 capable of sludge circulation treatment configured in this way is basically operated in an automatic operation mode, and when the pyrolysis oil collected in the oil collection tank 110 reaches a certain amount (Level High) or higher, it operates for a set time (e.g. , 20 seconds) or less (Level Low), the oil transfer pump automatically operates and is automatically transferred to the oil storage tank 120, which is the selected oil reservoir, and stored.

The oil collection tank 110 preferentially collects oil discharged from the oil vapor heat exchange device, and if the collected oil exceeds a preset value, it is transferred to the oil storage tank 120 through a transfer pump and stored.

The oil storage tank 120 is connected to the oil collection tank 110 and serves to store oil transferred from the oil collection tank 110.

A sludge supply pump 130 is connected to the lower part of the oil storage tank 120, which supplies the sludge accumulated in the lower part of the oil storage tank 120 to the firebox in the pyrolysis treatment unit to enable gas and oil reproduction through pyrolysis treatment. This is to do it.

This sludge supply pump 130 is connected to the firebox in the pyrolysis treatment unit through a pipe, and adjusts the amount of sludge supplied to the firebox in the pyrolysis treatment unit according to the temperature of the waste synthetic resin input portion of the firebox in the pyrolysis treatment unit.

More specifically, the firebox in the pyrolysis treatment unit is provided with one or a pair of waste synthetic resin input parts. At this time, as the temperature measurement value of each input part is transmitted to the sludge supply pump 130, the sludge supply pump 130 supplies the sludge necessary for supply. The supply amount is determined, and based on this, appropriate sludge is supplied to each input port.

Meanwhile, one side of the pipe connected to the sludge supply pump 130 may be branched and connected to the oil collection tank 110. This is to ensure that a circulation operation is performed in which the oil whose temperature has been lowered in the oil storage tank 120 is supplied to the oil collection tank 110 and then the oil in the heated oil collection tank 110 is supplied.

More specifically, the oil collection tank 110 is connected to the oil vapor heat exchange device through a separate pipe, so that the oil collected in the oil collection tank 110 can be re-supplied to the oil vapor heat exchange device. This is because the internal oil temperature decreases when stored in the oil storage tank 120 for a long period of time (for example, 5 days), so that it can be warmed to the own temperature of the oil collected in the oil collection tank 110. The oil collected in the oil collection tank 110 is re-supplied to the oil vapor heat exchanger through a circulation pump to increase the temperature, and then the oil with the increased temperature is collected and supplied again to the oil storage tank 120.

Accordingly, a circulation operation occurs in which the heated oil in the oil collection tank 110 is supplied to the oil storage tank 120, and the oil whose temperature is relatively lowered in the oil storage tank 120 is supplied to the oil collection tank 110. By repeating the process, the oil in the oil storage tank 120 can maintain its temperature through its own heat without a separate heater.

Next, we will look at the overall configuration of the continuous waste synthetic resin pyrolysis treatment facility 200, which includes the oil treatment device capable of sludge circulation treatment as discussed above.

FIG. 2 is a diagram showing the overall configuration of a continuous waste synthetic resin pyrolysis treatment facility 200 including an oil treatment device capable of sludge circulation treatment shown in FIG. 1.

Looking at FIG. 2, the continuous waste synthetic resin pyrolysis treatment facility 200 including an oil treatment device capable of sludge circulation treatment is largely comprised of a waste synthetic resin input unit 210, a pyrolysis treatment unit 220, a tea treatment unit 230, and oil vapor heat exchange. It may be configured to include a unit 240, an oil processing unit 250, and a gas processing unit 260.

The waste synthetic resin inlet 210 is largely comprised of an articulated crane 211 for injecting the waste synthetic resin, a hopper 212 for receiving the injected waste synthetic resin, and a machine installed in the longitudinal direction within the hopper 212 to stir the injected waste synthetic resin. A pair of stirring screws 213, a pair of compression screws 214 installed in the longitudinal direction at the lower side of the hopper 212 and supplying and simultaneously compressing the stirred waste synthetic resin in one direction, the pair of compression screws A pair of vertical stirring screws 215 and each vertical stirring screw are installed to be connected in a vertical direction at one end of (214), and transport the waste synthetic resin to the lower side and simultaneously release the waste synthetic resin in a compressed state. It is connected to (215) and may be configured to include a pair of supply screws (216) that supply the transferred waste synthetic resin to the pyrolysis transfer path.

The articulation crane 211 can be a three-stage articulation crane for the smooth introduction, packaging, storage, and loading of waste synthetic resin, which is the main raw material, into the hopper 212, and can be installed so that the working radius is 9.5 m.

The hopper 212 serves to accommodate a large amount of waste synthetic resin introduced through the articulated crane 211, and can be formed in an upper and lower shape with the upper and lower parts open. In addition, a pair of stirring screws 213 may be provided inside the longitudinal direction, and the waste synthetic resin is discharged through a pair of open areas provided on the lower side. At this time, each open area has a pair of compression screws. A screw 214 is provided.

A pair of stirring screws 213 serve to agitate a large amount of waste synthetic resin introduced into the hopper 212. At this time, the stirring drive motor, the stirring shaft that rotates by being coupled to the rotation axis of the stirring drive motor, and the outer peripheral surface of the stirring shaft It may be configured to include a spiral stirring blade provided along. The pair of stirring screws 213 can be more easily compressed through the pair of compression screws 214 by breaking or loosening a large amount of waste synthetic resin input into the hopper 212 if it is lumped or pressed. Let it be.

Meanwhile, the pair of stirring screws 213 are installed parallel to each other while maintaining a certain distance (for example, 150 mm) from each other within the hopper 212, and at this time, the compression of the pair of compression screws 214 It rotates in the direction opposite to the direction (direction of rotation).

A pair of compression screws 214 are provided below a pair of open areas provided in the longitudinal direction (lengthwise) at the bottom of the hopper 120, and supply waste synthetic resin discharged through the pair of open areas in one direction. At the same time, it serves to compress the waste synthetic resin.

This pair of compression screws 214 is a pair of conveyor ducts (or conveyor pipes) communicating with a pair of open areas provided in the lower part of the hopper 212, and a pair of compression drives provided in the pair of conveyor ducts. It may be configured to include a motor, a rotation shaft coupled to the rotation axis of the compression drive motor and extending in the longitudinal direction of the conveyor duct, and a compression screw provided along the outer peripheral surface of the rotation shaft.

At this time, the compression screw transfers the waste synthetic resin in the rotational direction through its spiral structure, and the pitch may be gradually narrowed based on the transfer direction. Accordingly, the compression efficiency through the pair of compression screws 214 can be increased by increasing the conveying speed due to the narrowing pitch.

The waste synthetic resin compressed and transferred through a pair of compression screws 214 is transferred to a pair of vertical stirring screws 215.

A pair of vertical stirring screws 215 are installed to be connected in the vertical direction at one end of the pair of compression screws 214, and simultaneously transport the conveyed waste synthetic resin in a downward direction. It plays a role in releasing the compressed waste synthetic resin.

The pair of supply screws 216 are each connected to the lower part of the vertical stirring screw 215, and serve to supply the waste synthetic resin transferred through the pair of vertical stirring screws 150 to the pyrolysis transfer path.

Meanwhile, although not shown in the drawing, the present invention may further include a catalyst input unit (not shown). The catalyst introduced through the catalyst inlet is preferably zeolite, and more preferably slaked lime (calcium hydroxide). This is to reduce the cost of catalyst input.

Additionally, zeolite or slaked lime may be used as the catalyst. At this time, the zeolite contains SiO2 62.2-75.0 wt%, Al2O2 10.0-21.0 wt%, Na2O 1.5-5.0 wt%, K2O 1.7-3.5 wt%, CaO 0.8-2.5 wt%, Fe2O2 0.5-1.8 wt%, and 0.5 wt% of other components. It contains ~1.8 wt%, and the loss on ignition is 5.2~15.3 wt%, and other components may include FeO, TiO2, P2O5, and MnO. Additionally, the pH of the zeolite may be 9.0 to 10.5, and the cation exchange capacity (CEC) may be 80 to 92 meq/100g. Slaked lime may contain more than 70% of CaO, less than 2% of SiO2, less than 3% of MgO, less than 1% of Fe2O3, and less than 1% of Al2O3, and preferably does not contain sulfur.

In addition, the slaked lime has a particle size that allows more than 95% of the slaked lime to pass through a 325 mesh sieve. Specifically, it is desirable to have a particle size that allows 96.58% of the slaked lime to pass through a 325 mesh sieve.

Here, when zeolite is used as the catalyst, the formation of suspended substances such as tar, which is generated when oil vapor is generated, is suppressed while making it easy to remove suspended substances such as tar, and when slaked lime is used as the catalyst, oil vapor is removed with a strong alkaline component. It is easy to suppress the formation of suspended substances such as tar and remove suspended substances such as tar, which are generated at the same time, and can easily neutralize the produced oil.

The pyrolysis treatment unit 220 transfers the waste synthetic resin input through the waste synthetic resin input unit 210 to one side and performs pyrolysis treatment multiple times, thereby allowing oil vapor and oil to be discharged.

More specifically, the pyrolysis treatment unit 220 is a device that performs pyrolysis of the input waste synthetic resin by transferring it in stages according to changes in the rotation speed of an automatically controlled screw. It receives the waste synthetic resin from the waste synthetic resin input unit 210 and decomposes the waste synthetic resin into waste synthetic resin. It is configured to include a multi-stage pyrolysis transfer screw conveyor to generate oil vapor by pyrolyzing the oil.

This pyrolysis treatment unit 220 transfers the waste synthetic resin supplied through the pair of supply screws 216 of the waste synthetic resin input unit 210 to one side while performing primary pyrolysis treatment. A screw conveyor, a pair of first pyrolysis treatment transfer screw conveyors, and a pair of second pyrolysis treatment transfer screw conveyors configured to undergo secondary pyrolysis treatment while transferring the pyrolyzate transferred from the first pyrolysis treatment transfer screw conveyor to one side. A pair of third pyrolysis treatment transfer screw conveyors configured to undergo tertiary pyrolysis treatment while transferring the pyrolysis material transferred from the conveyor to one side, and a pair of third pyrolysis treatment transfer screw conveyors configured to discharge the pyrolysis residue to the outside. It may be configured to include a pair of fourth pyrolysis treatment transfer screw conveyors.

A pair of first to fourth pyrolysis treatment transfer screw conveyors are formed in multiple stages, so that the inputted waste synthetic resin is pyrolyzed by the heat of the gas burner in the process of being transferred in a zigzag shape to generate oil vapor.

Here, the temperature of the pyrolysis processing unit 220 is automatically adjusted through automatic adjustment of the gas pressure according to the internal temperature of the pyrolysis reactor body set to control the yield of oil and gas, and a pair of first to fourth pyrolysis treatments are transferred. The screw conveyor performs thermal decomposition by automatically proportionally controlling the rotation speed according to the set values of current (current value) and temperature (outlet oil vapor temperature), and automatically transfers the generated oil vapor and cooled oil to the subsequent process.

In addition, the internal temperature of the pyrolysis reactor main body of the pyrolysis processing unit 220 is automatically adjusted. Considering that if the temperature inside the pyrolysis reactor main body is kept high, pyrolysis occurs well and the amount of gas generated increases, and if it is kept low, the oil production amount increases. , the operating temperature is set according to the quality (e.g., moisture content) of the input fuel, and in order to automatically maintain this set temperature, the gas pressure set value of the gas burner gas supply tank for supplying gas to the gas burner is used as a numerical control function. It is automatically changed so that the internal temperature of the pyrolysis reactor main body is automatically and consistently adjusted.

The tea treatment unit 230 serves to compress and process the pyrolysis residue, Char, discharged from the pyrolysis treatment unit 220. Through this compression, the discharge of oil vapor is blocked and only the tea is automatically discharged to the outside.

More specifically, the tea processing unit 230 has a residual tea discharge communication passage connected to the distal end of the pair of fourth pyrolysis treatment transfer screw conveyors of the pyrolysis processing unit 220, and a residual tea discharge communication passage at one end of the pyrolysis processing unit 220. The first residue treatment transfer screw conveyor is connected, the second residue treatment transfer screw conveyor is connected in communication with the transfer end (other end) of the first residue treatment transfer screw conveyor, and the transfer end (other end) of the second residue treatment transfer screw conveyor It may be configured to include a treatment residue storage tank (or tone bag) connected to a communication end to store the residue.

This tea treatment unit 230 is operated to block external leakage of oil vapor in the process of discharging the remaining tea (Char) by pyrolyzing the waste synthetic resin in the pyrolysis treatment unit 220 and automatically discharges only the tea to the outside.

The first residue treatment transfer screw conveyor serves to primary transport and compress the tea, and after pyrolysis is completed, it rotates at a set speed according to the amount of tea discharged from the pair of fourth pyrolysis treatment transfer screw conveyors 224. and is emitted.

In addition, the second residue treatment transfer screw conveyor adjusts the rotation speed in conjunction with the operating current value of the first residue treatment transfer screw conveyor to automatically and continuously discharge the tea compressed by the first residue treatment transfer screw conveyor while maintaining a constant compression state. Proportional control prevents external leakage of oil vapor and automatically discharges only the vehicle.

The tea is then transferred to a treatment residue storage tank (or ton bag) that collects the tea discharged from the second residue treatment transfer screw conveyor.

Each transfer screw conveyor of this tea processing unit 230 is operated in an automatic operation mode, and when the condition of the preset temperature or higher is satisfied, it automatically operates in the order of the second residue treatment transfer screw conveyor -> the first residue treatment transfer screw conveyor. When stopped, it automatically stops in the reverse order of operation.

The oil vapor heat exchange unit 240 serves to cool the oil vapor generated from the pyrolysis treatment unit 220 and separate it into oil (pyrolysis oil) and gas (pyrolysis gas).

More specifically, the oil vapor heat exchange unit 240 is a plurality of oil vapors, one end of which is connected to each of the multi-stage pyrolysis transfer screw conveyors, so that oil vapor generated by pyrolysis in the multi-stage pyrolysis transfer screw conveyor of the pyrolysis processing unit 220 is supplied to the oil vapor transfer screw conveyor. An oil vapor transfer screw conveyor configured to transfer oil vapor flowing in from a supply pipe and a plurality of oil vapor supply pipes to the following oil vapor heat exchanger, and a plurality of oil vapors configured to receive oil vapor from the oil vapor transfer screw conveyor, cool it in multiple stages, and separate it into oil and gas. A pyrolysis oil transfer screw conveyor is connected to the lower end of each of the heat exchanger and the plurality of oil vapor heat exchangers and transports the separated pyrolysis oil to one side, and is configured to supply and recover the cooling medium (cooling water) to each of the plurality of oil vapor heat exchangers. It may be configured to include a cooling medium circulation unit.

The oil vapor transport screw conveyor is controlled to operate automatically while the rotation speed is adjusted according to the set operating current value when transporting oil vapor.

The oil vapor heat exchanger receives the cooling medium (coolant) supplied through the cooling medium circulation unit, cools the oil vapor through heat conduction heat exchange, and separates it into oil and gas.

This oil vapor heat exchanger is largely composed of first to fourth heat exchangers, and a zigzag pyrolysis gas supply pipe is formed from the bottom of the oil vapor heat exchanger on the upstream side to the bottom of the next oil vapor heat exchanger based on the direction in which oil vapor is supplied. And the oil vapor heat exchanger at the final stage is configured with a pyrolysis gas discharge pipe connected to supply pyrolysis gas to the gas processing unit 260.

The pyrolysis oil transfer screw conveyor operates at a preset constant rotation speed.

The cooling medium circulation unit includes a cooling water reservoir, a plurality of cooling water circulation pumps configured to supply and recover cooling water from the cooling water reservoir to the oil vapor heat exchanger, and a cooling tower that recovers the cooling water heat exchanged in the oil vapor heat exchanger, cools it, and provides it to the cooling water reservoir. In this way, the cooling water circulated and recovered in the cooling medium circulation unit may be configured to supply the cooling water used in the processing unit 260.

Since the oil treatment unit 250 corresponds to the oil treatment device 100 capable of sludge circulation treatment discussed above, detailed description will be omitted.

The gas processing unit 260 is configured to inhale and cool the gas separated from the oil vapor heat exchange unit 240 under a set pressure, and to transfer and store the cooling gas.

More specifically, the gas processing unit 260 receives the pyrolysis gas separated from the oil vapor heat exchanger at the final stage of the oil vapor heat exchanger 240 and cools the pyrolysis gas in a multi-stage manner, and the pyrolysis gas in the horizontal gas cooling tower. An oil-water separator that separates oil and water, one or more gas blowers for transporting gas storage tanks that suck in pyrolysis gas from the oil-water separator and supply it to the gas storage tank, and a gas storage device that stores the gas sucked in by the gas blowers for transporting gas storage tanks. It may be configured to include a palling tower that removes foreign substances (tar, etc.) contained in the tank and final gas.

The cooling medium (cooling water) used in the horizontal gas cooling tower is configured to be supplied from the cooling medium circulation unit. Oil generated from these horizontal gas cooling towers and polling towers may be configured to be recovered into a pyrolysis oil collection tank.

Additionally, in one embodiment, the gas processing unit 260 may further include a gas burner gas supply tank that receives gas from the gas storage tank and stores the gas supplied to the gas burner of the pyrolysis processing unit 220.

The gas processing unit 260, configured in this way, blows the oil vapor generated during thermal decomposition in the oil vapor heat exchanger 240 of the gas blower for transporting the gas storage tank according to the pressure set to the pressure required for stable operation of the facility (preferably, 10 mmH ₂ O). It can be configured to automatically adjust the rotation speed and automatically transfer to the gas storage tank.

According to the present invention as described above, stable thermal decomposition can be performed by automatically adjusting the operating situation according to changes in the quality contained in the waste synthetic resin, such as temperature and moisture, during the process of treating waste synthetic resin, and stable thermal decomposition is possible, resulting in overall treatment efficiency. It not only improves the yield of oil and gas, but also enables oil and gas reproduction by supplying the sludge accumulated at the bottom of the oil storage tank to the pyrolysis treatment firebox, and also enables oil and gas regeneration through an oil vapor heat exchanger without a separate heating heater. It has the advantage of maintaining a constant temperature in the oil storage tank by circulating heated oil.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it is possible.

100: Oil treatment device capable of sludge circulation treatment
110: Oil collection tank
120: Oil storage tank
130: Sludge supply pump

Claims (10)

An oil collection tank (110) in which oil discharged from the oil vapor heat exchange device is collected;
An oil storage tank 120 connected to the oil collection tank 110 and storing oil transferred from the oil collection tank 110; and
An oil treatment device capable of sludge circulation treatment, comprising a sludge supply pump (130) that supplies sludge accumulated at the inner lower portion of the oil storage tank (120) to a firebox in the pyrolysis treatment unit to allow pyrolysis treatment to proceed.
According to paragraph 1,
The oil collection tank 110 is,
If it is determined that the oil temperature in the oil storage tank 120 falls below the preset temperature, the oil in the oil collection tank 110 is transferred to the oil vapor heat exchanger to raise the temperature, and then the oil storage tank 120 An oil treatment device capable of sludge circulation treatment, characterized in that it is transported to .

According to paragraph 1,
The sludge transfer pump 130,
It is connected to the firebox in the pyrolysis processing unit through a pipe, and one side is branched and connected to the oil collection tank 110, so that the oil whose temperature has been lowered in the oil storage tank 120 is transferred to the oil collection tank 110. An oil treatment device capable of sludge circulation treatment, characterized in that.
According to paragraph 1,
The sludge transfer pump 130,
An oil treatment device capable of sludge circulation treatment, characterized in that the amount of sludge supplied to the firebox in the pyrolysis treatment unit is adjusted according to the temperature of the waste synthetic resin input portion of the firebox in the pyrolysis treatment unit.
According to paragraph 4,
The sludge transfer pump 130,
An oil treatment device capable of sludge circulation treatment, characterized in that the amount of sludge supplied to the firebox in each pyrolysis treatment unit is individually adjusted according to the temperature of each of the pair of waste synthetic resin input units provided in the firebox in the pyrolysis treatment unit.
Waste synthetic resin input unit (210);
A pyrolysis treatment unit 220 configured to pyrolyze the waste synthetic resin inputted through the waste synthetic resin input unit 210 to one side and pyrolyze it multiple times to discharge oil vapor and oil;
A tea processing unit 230 that processes the char discharged from the pyrolysis treatment unit 220;
An oil vapor heat exchange unit 240 that cools the oil vapor generated from the thermal decomposition processing unit 220 and separates it into oil and gas;
An oil collection tank 251 that collects the oil discharged from the oil vapor heat exchange device, an oil storage tank 252 connected to the oil collection tank 251 and storing the oil transferred from the oil collection tank 251, and the oil It includes a sludge supply pump 253 that supplies the sludge accumulated in the lower inner part of the storage tank 252 to the firebox in the pyrolysis treatment unit to enable pyrolysis treatment, and stores the oil separated through the oil vapor heat exchange unit 240. Processing unit 250; and
A continuous waste synthetic resin pyrolysis treatment facility including an oil treatment device capable of sludge circulation treatment, characterized in that it includes a gas processing unit 260 that cools and stores the gas separated through the oil vapor heat exchange unit 240. .
According to clause 6,
The waste synthetic resin input unit 210,
Articulating crane for loading waste synthetic resin;
A hopper that accommodates the injected waste synthetic resin;
A pair of stirring screws installed in the longitudinal direction within the hopper and agitating the inputted waste synthetic resin;
A pair of compression screws installed in the longitudinal direction below the hopper and supplying and compressing the stirred waste synthetic resin in one direction at the same time;
a pair of vertical stirring screws installed to be connected in a vertical direction at one end of the pair of compression screws and transporting the conveyed waste synthetic resin downward and simultaneously releasing the waste synthetic resin in a compressed state; and
Continuous waste synthetic resin pyrolysis including an oil treatment device capable of sludge circulation treatment, characterized in that it includes a pair of supply screws connected to each vertical stirring screw and supplying the transferred waste synthetic resin to the pyrolysis transfer path. Processing equipment.
According to clause 6,
The tea processing unit 230,
a residual material discharge communication path connected to receive the tea generated in the pyrolysis treatment unit 220;
A first residue disposal transfer screw conveyor connected to the residue discharge communication path at one end;
a second residue treatment transfer screw conveyor connected in communication with the transfer end of the first residue treatment transfer screw conveyor;
A third residue treatment transfer screw conveyor connected in communication with the transfer end of the second residue treatment transfer screw conveyor; and
A continuous waste synthetic resin pyrolysis treatment facility comprising an oil treatment device capable of sludge circulation treatment, characterized in that it includes a treatment residue storage tank for storing tea transported and discharged from the third residue treatment transfer screw conveyor.
According to clause 6,
The oil vapor heat exchange unit 240,
A plurality of oil vapor supply pipes, one end of which is connected to the pair of multi-stage pyrolysis transfer screw conveyors 224;
An oil vapor transfer screw conveyor configured to transport oil vapor flowing in from the plurality of oil vapor supply pipes to the following oil vapor heat exchanger;
A plurality of oil vapor heat exchangers configured to receive oil vapor from the oil vapor transfer screw conveyor, cool it in multiple stages, and separate it into oil and gas;
A pyrolysis oil transfer screw conveyor connected to a lower end of each of the plurality of oil vapor heat exchangers in communication and transporting the separated pyrolysis oil to one side; and
A continuous waste synthetic resin pyrolysis treatment facility comprising an oil treatment device capable of sludge circulation treatment, comprising a cooling medium circulation unit configured to supply and recover a cooling medium to each of the plurality of oil vapor heat exchangers.
According to clause 6,
The gas processing unit 260,
a plurality of pyrolysis oil cooling towers that receive pyrolysis gas from the oil vapor heat exchange unit 240 and cool it in a multi-stage manner;
an oil-water separator that receives pyrolysis gas from the pyrolysis oil cooling tower and separates oil and water;
A gas blower for transporting one or more gas storage tanks that sucks pyrolysis gas from the oil-water separator and supplies it to the following gas storage tank;
a gas storage tank that stores gas sucked by the gas blower for transporting the gas storage tank; and
A gas burner gas supply tank that receives gas from the gas storage tank and stores gas to be supplied to the gas burner included in the pyrolysis treatment unit 220. An oil treatment device capable of sludge circulation treatment, comprising a. Continuous waste synthetic resin pyrolysis treatment facility including.