KR20020072889A - the pyrolysis waste recycling method and system - Google Patents

Abstract

PURPOSE: An oil producing method of waste synthetic resin and an oil producing equipment system are provided to eliminate a washing process of the waste synthetic resin, to enable a continuous processing thereof, and to minimize the contamination of environment. CONSTITUTION: The method for producing oil from waste synthetic resin comprises a crushing step for crushing the waste synthetic resin into a size of 3cm to 5cm and melting the synthetic resin; an input step for inputting the molten cut synthetic resin into a reactor; an agitating step for adding 0.2 to 0.5 wt.% of a catalyzer in the 100 wt.% of the synthetic resin and agitating them; a cooling exchange step for condensing gas generated at a temperature of 250 to 420deg.C under a vacuum condition in a heat exchanger; a fractionating step for fractionating the mixing oil into gasoline, diesel oil, and gas; a rectification step; and a storage step.

Description

The pyrolysis waste recycling method and system

The present invention relates to an emulsification method that is capable of treating waste synthetic resins while producing oil using waste synthetic resins generated at home and industrial sites, and more specifically, waste styrofoam, waste plastics, and waste vinyl, which are almost impossible to recycle. Of the waste synthetic resins invented to produce oils such as gasoline, diesel, and the like through pyrolysis under constant temperature and pressure so that they do not burn or solidify in the reactor. An emulsification method and an emulsification plant system.

As an emulsification method using existing waste synthetic resin, a pre-treatment step of pulverizing the prepared waste vinyl and removing the water contained in the pulverized waste vinyl raw material as in Patent No. 191075 "Method and apparatus for producing gasoline and diesel using waste vinyl" Steps; A dissolution step of dissolving the waste vinyl raw material in a state in which the heavy oil, the solvent, is preheated in the dissolution tank; A cracking process step of generating a mixed gas in a gaseous state while gradually cracking and cracking the temperature of the waste vinyl solution obtained in the dissolution tank; A mixed oil separation process step of cooling the mixed gas in a gas state through a cooler and passing the cooled mixed oil through a low pressure gas separation tower to separate the mixed oil and a gas; In order to increase the active ingredient of the separated mixed oil and obtain a purified mixed oil, the mixed oil is fed to the extraction tower, and then 98% of the concentrated acid (H 2 SO 4), which is about 1% of the mixed oil, is discharged to discharge the precipitate. After circulating and waiting for a predetermined time in a state in which a solution obtained by diluting sodium hydroxide (NaOH) and water by 1: 9 in a quantity of about 10% of mixed oil was added to the mixed oil of the washing water, the precipitate was discharged. An extraction process step of obtaining a refined mixed oil by discharging the washing water to a precipitate by adding; The refined mixed oil is distilled by applying heat in a distillation tank and then supplied to a rectification tower, rectified and cooled to produce gasoline and diesel oil using waste vinyl as a rectification process step of obtaining diesel oil and gasoline,

A first step of crushing the waste plastic raw material of "Unemployed Patent Method No. 1998-65157" and automatically supplying it by a predetermined amount; A second step of dissolving the supplied waste plastic crushed product while melting and reacting it to be decomposed into an oil (fuel oil) mixture and a gas; A third step of separating the gas and oil mixture from the treated material of the second step; A fourth step of extracting and washing various sludges from the oil mixture of the third step and then deodorizing and stabilizing the oil; Consisting of a method of emulsifying waste plastics comprising a fifth step of fractionating and distilling the treated product of the fourth step with gasoline, diesel oil, or the like,

A pretreatment step of cutting and crushing waste vinyl and plastic raw materials of "A method for producing gasoline and diesel oil using waste vinyl and waste plastic and apparatus therefor"; A melting step of melting the treated raw material to a high temperature to liquefy it; Catalytic cracking reaction of molten liquid with aluminum oxide (Al2O3), copper (Cu), and nickel (Ni) as the first catalyst is carried out to separate carbon connection chains by heat and metal wave action of the first catalyst, thereby producing oil gas. Catalytic cracking reaction process to obtain and heavy oil; The heavy oil produced through the catalyst cracking process is transferred to the heavy oil stirrer 21, and the oil gas is rearranged by the action of a catalyst composed of nickel oxide, cobalt oxide, aluminum oxide, and silicon dioxide to rearrange the atoms of the oil molecules so that the octane number is high. A classification step of classifying gasoline and gas, kerosene, diesel, etc .; The gas produced in the classification process is separated into gas and gasoline again, gasoline is extracted, and the heavy oil transferred to the heavy oil stirrer 21 is cultured and fermented with homogenized cultured nutrient solution and filtered and compressed air. There was a method of producing gasoline and diesel oil using waste vinyl and waste plastic, which consists of an extraction process for extracting fermented products and kerosene and diesel oil through a centrifugal separator, but these conventional techniques do not have high utilization of heat and the additive formulation method is deteriorated. As the oil extraction rate is very low, it is not economical and it takes a lot of time to cool down the temperature, so it is not possible to continuously input raw materials, and it takes much more labor time compared to the amount of emulsification because it cannot be continuously operated. In addition, there is also a problem of environmental pollution due to incomplete treatment of by-products. Particularly, these methods mainly emulsify thermoplastic resins, but there are some resins that cannot be treated and catalysts are used in pyrolysis process of waste plastics, so there is a high possibility of secondary contamination by them and the work process is still continuously There was a problem that was not achieved.

The present invention has been invented in view of the above problems, and the waste synthetic resins generated at home and industrial sites are collected and immediately put together with additives in the reactor after crushing without additional sorting and washing operations under low temperature vacuum. Because it is pyrolyzed, it is treated as lead-free, odorless and pollution-free to prevent the occurrence of secondary environmental pollution, and at a lower price than conventional waste synthetic resin processing costs, while discharging oil to improve economic efficiency, and the facility size is simple. Regardless of whether it is easy to install anywhere or anywhere, local governments can manage synthetic waste that is difficult to treat and secure financial resources to avoid inconsistency and protect the environment in order to secure incinerators and landfills. will be.

1 is a block diagram of an emulsification process according to the present invention.

Figure 2 is an emulsification process system according to the present invention.

Figure 3 is a schematic diagram of the reactor of the emulsification process system according to the present invention.

Figure 4 is a schematic view of the oil refinery tower of the emulsification process system according to the present invention.

<Description of main parts of drawing>

10: Reactor 11: Hopper

12: Transfer Screw Tube 13: Cooling Exchanger

14: reservoir 15: mixed oil tank

16: Rectification Tower 17: Gas Recovery Machine

18: rectifier tower 19: inlet

19 ': Manual inlet 20: Gasoline tank

21: commutation tank 22: stirring motor

23: stirring screw

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

In the emulsification method that the waste synthetic resin is pyrolyzed in the reactor to extract the gasoline, diesel, etc. through each step,

A crushing step of melting the waste synthetic resin generated at home and industrial sites (Schirofoam) and cutting it into 3 to 5 cm;

A raw material input step of putting the melted and cut waste synthetic resin into a hopper and automatically feeding the reactor into a reactor by a transfer screw tube;

5-15% by weight of ferrosilicon, 5-15% by weight of phosphorus pentachloride, 25-35% by weight of acetate, 15-25% of oxalic acid, 15-25% by weight of dimethyl ether, ethylenedichloride 5 A melting step of mixing -15 wt% and mixing for 30 minutes to add 0.2-0.5 wt% of a catalyst to 100 wt% of the waste synthetic resin;

A cold exchange step of condensing the gas generated by low temperature pyrolysis at about 250 to 420 ° C. in the vacuum state in the heat exchanger through a pipeline;

A sorting process of collecting the mixed oil made of liquid by the cold exchange into a mixed oil tank and classifying the mixture into gasoline, diesel, gas, etc. by a catalytic action;

A rectification process in which the classified gasoline and diesel oil are converted to heavy oil in a heavy oil stirrer in the mixed oil tank and transferred to the rectification tower to rectify and filter high quality gasoline and diesel oil;

The rectified gasoline and diesel oil is classified into and stored in each gasoline tank and a diesel oil tank to provide an emulsification method of waste synthetic resin.

In addition, the emulsification facility system for performing the emulsification method of the waste synthetic resin as described above, the transfer screw pipe 12 for automatically transporting the molten and pulverized waste synthetic resin into the hopper (11);

A reactor (10) for mixing the waste synthetic resin supplied from the conveying screw tube (12) with a catalyst to generate gas by pyrolyzing at about 250 to 420 캜 in a vacuum state;

A cooling exchanger (13) for cooling and heat-exchanging the gas generated while melting by pyrolysis in the reactor (10);

A storage tank 14 for supplying a refrigerant to perform heat exchange in the cooling exchanger 13;

A mixed oil tank (15) for separating and storing the mixed oil generated by the cold exchange into gasoline, diesel oil, and gas by catalysis and converting the mixed oil into heavy oil with a stirrer;

A gas recovery unit 17 for recovering the separated gasoline and gas to separate the gasoline and the gas and to transfer only the gasoline to the rectification tower 16;

Rectification tower (18) for rectifying the heavy oil transported from the mixed oil tank (15) tank and separated by filtration into gasoline, light oil;

Emulsification system configuration of the waste synthetic resin consisting of a gasoline tank 19, a gasoline tank 20 for storing the rectified gasoline and diesel oil, respectively.

In addition to the above, the emulsification facility system for waste synthetic resin according to the present invention includes a control box, a reactor and a thermometer of a rectifying tower for distributing the electric mixture and controlling the electric compound alone.

Referring to each step of the emulsification method of the present invention made as described above are as follows.

Step 1: melting and crushing

The waste styrofoam, waste vinyl, and waste plastic collected at home and industrial sites are collected, and the waste styrofoam and waste vinyl are heated by a separate melter so that the volume is reduced and agglomerated to form a rod.

The styrofoam rods and the plastic rods that are agglomerated by the melter are put into other waste plastics in a crusher and crushed to a size of 3 to 5 cm.

In the shredding process, the Styrofoam rod and the plastic rod, which are heated and compressed (heat-extruded to form a bent rice cake), are shortened to a certain size in the agglomeration process and are supplied without passing through the shredder.

Second Process: Waste Synthetic Resin Transfer and Input Process

The waste synthetic resin crushed in the crusher is introduced into the hopper 11 installed on one side by other conveying devices such as a conveyor belt, and the injected waste synthetic resin is automatically introduced into the reactor 10 by the transfer screw tube 12.

At this time, the upper inlet of the reactor 10 and the transfer screw tube 12 is connected, and a separate motor and screw are installed in the inlet so that the waste synthetic resin transferred from the transfer screw tube 12 is forced into the reactor 10. By doing so, it is possible to input regardless of the heat, temperature, pressure in the reactor (10).

An abnormality may occur in the reactor 19, the inlet 19, or optionally, the waste synthetic resin may be introduced into the manual inlet 19 ′ installed at the lower end thereof.

Third process heating melting process

The waste synthetic resin transferred from the transfer screw tube 12 varies depending on the volume of the reactor 10, but is about 150 to 200 kg, and the injection time is all about 2 minutes to 2 minutes 30 seconds.

After the raw material (waste synthetic resin) is introduced into the reactor 10, a catalyst is introduced. The catalyst is 5-15 wt% of ferrosilicon, 5-15 wt% of phosphorus pentachloride, 25-35 wt% of acetate, and 15 oxalic acid. -25%, 15-25% by weight of dimethyl ether and 5-15% by weight of ethylene dichloride were mixed for 30 minutes, and then mixed with 100% by weight of the waste synthetic resin at 0.2-0.5% by weight, followed by heating at 250-420 ° C. do.

The reactor 10 takes about two hours and thirty minutes because of preheating 1 hour and reaction time 1 hour and 30 minutes in the initial stage of operation, but melting takes place in about 30 minutes to 1 hour from the time of subsequent addition.

After the raw material and the catalyst are introduced into the reactor 10 as described above, thermal decomposition is performed in a gel form by the internal temperature, thereby driving the stirring motor 22 to continuously stir the stirring screw 23, and the catalyst is a waste synthetic resin. Do not burn or press during heating, and at the same time, dissolve the waste synthetic resin well.

The waste synthetic resin melted in the reactor 10 is pyrolyticly burned at a low temperature of about 250 to 420 ° C. in a vacuum state in the reactor 10 to generate combustion gas.

The combustion gas is transferred to the cooling exchanger 13 through a discharge line on one side of the upper end of the reactor.

Fourth Process: Cooling Heat Exchange Process

Combustion gas generated by the pyrolysis in the reactor 10 is introduced into the cooling exchanger (13) consisting of a plurality of pipes through the pipeline to condense to produce mixed oil.

The cooling exchanger 13 is heat exchanged by the refrigerant (water) filled in the reservoir 14 on one side, and the cooling water used is circulated in the 50 m 2 reservoir 14 provided on one side and used for cooling Water is free from pollution and is not lost.

In the cold exchanger (13) it is condensed by heat exchange to produce mixed oil.

5th Process: Mixed Oil Sorting Process

The mixed oil produced by condensation in the cooling exchanger 13 is introduced into the mixed oil tank 15 through a pipeline again.

In the mixed oil tank 15 of this invention, it isolate | separates into gasoline, light oil, gas, etc. by a catalysis.

The separated diesel oil is converted into heavy oil having good fluidity at about 28-40 ° C. in the heavy oil stirrer in the mixed oil tank 15, and then transferred to the rectification tower 16.

At this time, the gasoline and gas are transferred to the gas recovery unit 17 and separated into gasoline and gas, and the gasoline is again transferred to the rectification tower through a pipeline, and the gas is incinerated in a separate incineration plant.

Step 6: Rectification Process and Storage

The heavy oil made in the heavy oil stirrer of the mixed oil tank 15 is transferred to the rectification tower through the pipeline and undergoes the rectification process.

The heavy oil and gasoline introduced into the refinery tower are classified into gasoline and diesel oil filtered and rectified in the rectification tower, and are stored in the gasoline tank 20 and the diesel oil tank 21.

The present invention is to repeat the above process and the waste synthetic resin to be added to the reactor 10 can be continuously added regardless of the temperature and vacuum pressure of the reactor 10, the first input from the reactor (10) It takes about two hours and thirty minutes because it takes time to preheat and prepare for melting, but in the second and third feeding step, melting is continuously performed in a short time within about 30 minutes to one hour.

In addition, Figure 2 shows the overall system for emulsifying the other waste synthetic resin of the present invention, which is provided with a plurality of reactor 10 and the rectification tower 16, in the description of the present invention, one reactor and one rectification tower By way of example, the system of the present invention, even if a plurality of reactors are installed, the operation of the system is operated in the same manner as a single system, and a separate description according to the number of addition and decrease of the reactor is omitted.

The annual treatment amount of the waste synthetic resin treated by the emulsification plant system according to the present invention is slightly different depending on the operation of the system, but is about 5000 to 6000 tons, the emulsification rate is 80%, and the gasoline separated from the mixed oil is 55%, diesel oil is about 40% and oil residue is 5%.

The oil obtained as described above has a calorific value of 10,000㎉ or more, so that it can be used as a fuel for boilers and automobiles, and can be supplied at 30 to 40% cheaper than conventional banca C oil.

In addition, the present invention is to supply a low cost to the heating house, such as a plastic house heating boiler, barn to reduce the burden on the farm.

Thus, the system of the present invention does not need to wash waste synthetic resin, so there is no fear of secondary water pollution due to washing, and it is possible to continuously process waste synthetic resin by continuously supplying and heating melting, and at low temperature pyrolysis treatment in a reactor. Combustion gases such as toxic gases are not released into the air, preventing air pollution and odors. The installation area is small compared to the existing waste plastic treatment facilities, and it operates continuously under a constant temperature and pressure. By minimizing the number of personnel, labor costs are reduced, while natural waste treatment costs of natural pollution are received, oil produced while collecting raw materials are sold, and investment facilities are recovered within a short period of time. Securing financial and local waste in local governments It would have been able to seek treatment at the same time benefit.

Claims (7)

In the method of thermally decomposing waste synthetic resin in a reactor to extract gasoline, diesel, etc. through each process, A crushing step of melting the waste synthetic resin generated at home and industrial sites (Schirofoam) and cutting it into 3 to 5 cm; Putting the melted and cut waste synthetic resin into a hopper and automatically inserting it into the reactor with a transfer screw; A melting step of mixing the catalyst in the reactor into which the waste synthetic resin is added and adding 0.2 to 0.5% by weight of the catalyst to 100% by weight of the waste synthetic resin; A cold exchange step of condensing the gas generated by low temperature pyrolysis at about 250 to 420 ° C. in the vacuum state in the heat exchanger through a pipeline; A sorting step of collecting the mixed oil made of liquid by the cold exchange into a mixed oil tank and classifying the mixture into gasoline, diesel, gas, etc. by catalysis; A rectification process in which the classified gasoline and diesel are converted to heavy oil in a heavy oil stirrer in the mixed oil tank and transferred to the rectification tower to rectify the gasoline and diesel with high quality; The rectified gasoline, diesel oil is emulsified method of the waste synthetic resin, characterized in that consisting of the process of classifying and stored in each gasoline tank, gasoline tank. The method of claim 1, The catalyst to be introduced into the reactor with waste synthetic resin is 5 to 15% by weight of ferrosilicon, 5 to 15% by weight of phosphorus pentachloride, 25 to 35% by weight of acetate, 15 to 25% of oxalic acid, 15 to 25% by weight of dimethyl ether, ethylene 5 to 15% by weight of dichloride is mixed and mixed for 30 minutes, waste synthetic resin emulsifying method characterized in that the mixture is mixed with 0.2 to 0.5% by weight to 100% by weight of waste synthetic resin. The method of claim 1, The dissolution step in the reactor is a waste synthetic resin emulsifying method, characterized in that pyrolysis occurs at a low temperature of about 250 ~ 420 ℃ in a vacuum. The method of claim 1, Waste synthetic resin emulsifying method characterized in that the continuous injection of the waste synthetic resin into the reactor. A transfer screw tube 12 for automatically transferring the melted and pulverized waste synthetic resin into the hopper 11 and into the reactor 10; A reaction furnace (10) for mixing the waste synthetic resin supplied from the transfer screw tube (12) with a catalyst to generate a gas by pyrolyzing at about 250 to 420 ° C. in a vacuum state; A cooling exchanger (13) for cooling and heat-exchanging the gas generated while melting by pyrolysis in the reactor (10); A storage tank 14 for supplying a refrigerant to perform heat exchange in the cooling exchanger 13; A mixed oil tank (15) for separating and storing the mixed oil generated by the cold exchange into gasoline, diesel oil, and gas by catalysis and converting the mixed oil into heavy oil with a stirrer; A gas recovery unit (17) for recovering the separated gasoline and gas to separate the gasoline and gas to transfer only the gasoline to the rectification tower (16); Rectification tower (18) for rectifying the heavy oil transported from the mixed oil tank (15) tank and separated by filtration into gasoline, light oil; Emulsification system of the waste synthetic resin, characterized in that the emulsification device consisting of a gasoline tank (19), a gasoline tank (20) for storing the rectified gasoline and diesel. The method of claim 5, Emulsification system of waste synthetic resin, characterized in that the inlet 19 is installed on the reactor 10, the inlet 19 and the transfer screw pipe 12 is connected to automatically supply the waste synthetic resin. The method of claim 5, Emulsification system of waste synthetic resin, characterized in that a plurality of cooling exchanger (13) for cooling heat exchange the gas generated while melting by pyrolysis in the reactor (10) is installed to increase the heat exchange.