JPH0674429B2 - Final disposal method and equipment for various waste oils - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for final treatment of various waste oils.

[0002]

2. Description of the Related Art Conventionally, various kinds of waste oil discarded after use in various industrial bodies, oil factories, various ships, service factories, etc. amount to tens of thousands of drums every day. It is processed by a trader, and the remaining amount is illegally processed. Therefore, the environmental pollution caused thereby, that is, the problem of polluting the atmosphere and the soil, has become a serious social problem.

An example is as follows: (1) Waste crude oil generated during cleaning of a crude oil carrier, that is, a sediment mixed with sand, water, crude oil, and other contaminants is stored in a storage tank. After boiling and cooling it for oil-water separation work, the crude oil that floats to the top is sold as reclaimed oil, the water that contains the remaining oil is discarded as is, and the sand bar where crude oil, etc. is mixed Has also been illegally processed.

(2) Waste oil by-produced in various industrial bodies is also treated by an industrial waste treatment company, but the waste oil collected is partially incinerated by itself, and the rest is sent to a waste oil refining company. After being boiled and cooled in a pot or the like by a primitive method, the waste oil that has floated up is sold and the waste that has settled at the bottom is illegally treated.

(3) A part of the waste engine oil is also purchased and refined by a refiner, but the refined residue is mixed with combustible substances such as sawdust and used as fuel for a direct fire furnace. is there.

[0006]

Various methods have been attempted in order to solve the above-mentioned serious problems, but various waste oils can be reliably separated into wastes and mixed oils (water and oil). There is no suggestion of how to do it.

The present invention is to solve the above-mentioned conventional problems.

The object of the present invention is to mix waste water with various waste oils mixed with water, crude oil precipitates, sandbars, dirt, etc. (waste + oil).
The present invention provides a final treatment method and apparatus that can be reliably separated.

Another object of the present invention is to seriously contaminate the waste oil by illegally treating the waste oil in such a state that almost no oil adheres to the waste material, that is, a state in which the waste material is legally landfilled. Can solve problems. A method and an apparatus for final treatment of waste oil are provided.

Still another object of the present invention is to provide a method and an apparatus for final treatment of waste oil, wherein the mixed oil can be further refined and reused as fuel.

[0011]

In order to achieve the above object, the final treatment method of various waste oils according to the present invention is such that various waste oils are charged into a heating tank provided with piping of a heat medium boiler and heated at 200 ° C. or higher for 15 After gradually heating for 30 minutes with stirring, the waste oil is put into a centrifuge so that water and oil are separated and flow into a mixed oil storage tank while the waste oil passes through the rotor of the centrifuge. On the other hand, the waste oil residue is stagnate in the waste tank through the discharge port of the rotating body with almost no oil content, and the mixed oil stored in the mixed oil storage tank flows into the stirring tank. Then, the catalyst agent is added, and the stirring is continued with a stirrer, but 6,000 is provided at one place of the external circulation pipe of the stirring tank.
It is characterized in that after passing through a high-performance liquid mixer operated at ˜8,000 rpm several times, it is introduced into a refined oil storage tank to obtain a refined oil that can be reused as fuel.

In addition, the final treatment apparatus for various waste oils according to the present invention is provided with a heating medium boiler pipe therein, a heating tank provided with a large number of agitators for agitating the various waste oils charged, and a waste material. , A mixture separated from a horizontal centrifuge with a rotor for separating water and oil (water +
A mixed oil storage tank for temporarily storing (oil), an agitating tank having an external circulation pipe having a catalyst agent inlet, and an agitator for agitating the inflowing mixed oil, and the agitating tank. A high performance liquid mixer installed at one location of an external circulation pipe of the stirring tank and operating at 6,000 to 8,000 rpm; and a refined oil storage tank into which refined oil stored in the stirring tank flows. Composed of and.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus of the present invention for the above purpose will be described in detail with reference to the accompanying drawings.

FIG. 1 is a process diagram of the processing method of the present invention, and FIG. 2 is a processing process and apparatus diagram showing an embodiment of the present invention.

A heating tank 1 for charging various kinds of waste oil 13 for heating and stirring is provided with a pipe 12 connected to a heat medium boiler 4 therein, and a large number of agitators 2 so that the waste oil is used. Stir while heating 13. In heating the waste oil, since the heat medium boiler 4 is used, the temperature of the waste oil in the heating tank 1 can be raised to 200 ° C. or higher.

The heated and agitated soup-like waste oil is then fed into the centrifuge 3 by the pump 8. The centrifuge 3 is generally horizontal and has a larger diameter than the waste oil feed port. A rotating body 19 for shaking the discharge port is provided, and the rotating body 19 is formed with a considerable number of small holes of 0.5 mm or less over the whole, and water or oil particles pass through the inner surface thereof. However, a filter body having fine pores through which the waste or particles thereof cannot pass is attached.

Therefore, when waste oil is put into the rotating body 19 and is rotated at a high speed, the water and the oil pass through the fine holes of the filter body and then through the small holes of the rotating body 19 to produce a mixed oil (water + oil). ) It flows into the storage tank 15.

Incidentally, since the precipitate of waste oil or its particles cannot pass through the fine holes while passing through the inside of the rotating body 19, the rotating body 19 from the inlet of the rotating body 19 to the outlet on the opposite side thereof. It is discharged while being rotationally transferred on the inner surface of the container and transferred to the waste tank 6.

Next, the mixed oil 14 stored in the mixed oil storage tank 5 flows into the stirring tank 7. The stirring tank 7 has a catalyst agent inlet and a stirrer 10 is provided. An external circulation pipe 16 is connected to the outside of the stirring tank 7.

A high performance liquid mixer 11 is provided at one location of the external circulation pipe 16, and the high performance liquid mixer 1 is provided.
No. 1 is operated at 6,000 to 8,000 rpm to completely mix water and oil.

Therefore, the mixed oil flowing into the stirring tank 7 is stirred with the catalyst agent 17 added and passes through the high-performance liquid mixer 11 several times, so that the refined oil can be reused as fuel. Then, the refined oil is stored in the refined oil storage tank 9.

The processing steps and embodiments of the present invention having the above total positions will be described in detail.

First step: The various collected waste oils are put into a heating tank 1 in which a pipe 12 of a heat medium boiler 4 is provided and heated at 200 ° C. or higher for about 15 to 30 minutes while gradually stirring. . The heated waste oil at this time becomes a soup-like waste oil in which water, oil, sand bar, dirt, sediment, etc. are mixed.

Second step: The soup-like waste oil, which is stirred and heated in the heating tank 1, is put into the centrifuge 3 designed by the above-mentioned centrifuge method by a pump. At this time, the waste oil introduced into the centrifuge 3 is separated into water and oil by the physical action of the high speed rotation of the rotor 19.
After passing through the fine holes of the filter body attached to the inner surface, the rotating body 19
After passing through the small holes drilled in, the mixed oil storage tank 5 is introduced.

On the other hand, the sand bar and sediment such as waste, that is, waste, is transferred to the waste tank 6 through the discharge port on the opposite side of the input port.

At this time, the waste 18 is in a state in which there is no problem at the time of landfilling with almost no oil or the like attached.

Third step: The mixed oil 14 stored in the mixed oil storage tank 5 is caused to flow into the stirring tank 7. Further, the catalyst agent 17 is added through the catalyst agent inlet, and stirring is performed by the stirrer 10. However, water and oil are mixed by passing through the high performance liquid mixer 11 provided in the external circulation pipe 16 several times. Make sure to mix thoroughly. Next, when the stirring is completed, the valve is turned on, and the refined oil refined by the above method flows into the refined oil storage tank 9.

The refined oil thus obtained is S
It is reused as a fuel whose O ₂ , CO, soot, etc. are reduced to less than half.

5 drums of various collected waste oils were put into the kametsu tank 1 provided with the pipe 12 of the heat medium boiler 4 and heated at 200 ° C. or higher for about 15 to 30 minutes while gradually stirring. At this time, the waste oil heated while being stirred is
The soup is also soup-like, but it is also water, oil, sand bar, dirt,
The precipitate and the like were in a mixed state.

Next, when the soup-like waste oil was continuously charged into the rotating body 19 of the centrifugal separator 3, water and oil were adhered to the inner surface of the rotating body 19, the fine holes of the filter body and the small size of the rotating body 19. After passing through the hole, it flows into and is stored in the mixed oil storage tank 5, while the waste 18 which is a sediment such as sand bar and filth from which water and oil have been separated is accumulated in the waste tank 6 through the discharge port. I was stuck. The discharged waste 18 was about 1 drum, and the waste at this time was in a state of being almost free of oil, and was in a state of being free of oil even when touched by hand. The waste accumulated in the waste tank 6 was collected later and landfilled in the storage place.

Next, 4 stored in the mixed oil storage tank 5
Inject the mixed oil 14 of about the drum into the stirring tank 7,
While adding the catalyst agent 17, the stirrer 10 was moved to continue stirring. In addition, the high-performance liquid mixer 11 that is operated at 6,000 to 8,000 rpm is provided at one position of the external circulation pipe 16 connected to the outside of the stirring tank 7 while the mixed oil is being stirred while stirring. The water and oil were mixed thoroughly with several passes.

By the above method, a refined oil of about 4 drums was obtained which could be reused as a fuel in a state where SO ₂ , CO, soot, etc. were reduced to less than half.

In this embodiment, about 4 drums of refined oil was obtained from 5 drums of waste oil, but it goes without saying that the amount of refined oil obtained varies depending on the quality of the waste oil.

As described above, the present invention is capable of solving a serious environmental pollution problem due to the treatment of various waste oils, and ensures that the various waste oils are separated into waste and water and oil (mixed oil). The separated waste can be made into a state in which it is sufficient to be landfilled in the place where it was stored with almost no oil, and the separated mixed oil is refined and reused as fuel. The present invention is a novel and useful invention that makes a great contribution to the problem of environmental pollution.

[0035]

As described above, according to the present invention, water,
Various waste oils composed of a mixture of crude oil deposits, sandbars, filth, etc. can be reliably separated into waste and mixed oil (water + oil). Further, according to the present invention, it is possible to solve the serious problem of pollution due to illegal treatment of waste oil by making the above-mentioned waste in a state where almost no oil adheres. Furthermore, according to the invention, the mixture can be further purified and reused as fuel.

[Brief description of drawings]

FIG. 1 is a process diagram of a processing method of the present invention.

FIG. 2 is a process diagram and apparatus diagram of an embodiment of the present invention.

[Explanation of symbols]

 1 Heating Tank 2 Stirrer 3 Centrifuge 4 Heat Medium Boiler 5 Mixed Oil Storage Tank 6 Waste Tank 7 Agitation Tank 8 Pump 9 Refined Oil Storage Tank 10 Stirrer 11 High Performance Liquid Mixer 12 Piping 13 Waste Oil 14 Mixed Oil 15 Refined oil 16 External circulation pipe 17 Catalytic agent 18 Waste 19 Rotating body

Claims (2)

[Claims] 1. Various kinds of waste oil are put into a heating tank provided with a pipe of a heat medium boiler, and the temperature is set to 15 to 30 at 200 ° C. or higher.
After gradually heating with stirring, the waste oil is put into a centrifuge so that water and oil are separated and flow into a mixed oil storage tank while the waste oil passes through the rotor of the centrifuge. The waste oil residue is stored in the waste tank through the discharge port of the rotating body with almost no oil content, and the mixed oil stored in the mixed oil storage tank is allowed to flow into the stirring tank. Add the agent and continue stirring with a stirrer, but pass it several times through a high-performance liquid mixer that operates at 6,000 to 8,000 rpm installed in one place of the external circulation pipe of the stirring tank. After that, a final treatment method of various waste oils is obtained, which comprises obtaining refined oil that can be reused as fuel by flowing into a refined oil storage tank. 2. A heating tank in which a pipe of a heat medium boiler is provided, and a large number of agitators are provided for agitating various kinds of waste oil that have been input, and a rotating body for separating waste, water and oil. A mixed oil storage tank for temporarily storing a mixture (water + oil) separated from a horizontal centrifuge having an agitator, and a stirrer for stirring an inflowing mixed oil having a catalyst agent inlet are provided. A stirring tank having an external circulation pipe provided therein, the stirring tank, a high performance liquid mixer which is installed at one position of the external circulation pipe of the stirring tank and is movable at 6,000 to 8,000 rpm, and the stirring. A final treatment device for various waste oils, characterized by comprising a refined oil storage tank into which refined oil stored in a tank flows.