JP3021385B2 - Waste liquid treatment method for vehicles - 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 for treating a waste liquid discharged from a vehicle at the time of vehicle inspection maintenance, legal maintenance, and the like, in particular, a used waste liquid for treating a used antifreeze liquid.

[0002]

2. Description of the Related Art Waste oil exchanged during vehicle inspection maintenance or legal maintenance is generally incinerated in a "fuel combustor" in a maintenance shop. On the other hand, antifreeze liquid that has been replaced during vehicle inspection maintenance, legal maintenance, etc., is generally appropriately treated (for example, drained as factory wastewater) in a garage or requested to be treated by an industrial waste disposal contractor. I have.

[0003] Incidentally, since the former act pollutes rivers, it is natural that it is prohibited from the viewpoint of environmental protection or pollution prevention. On the other hand, in the case of the latter, it is necessary to pay a fee to the disposal company by contract, but in recent years, as the legal wind (laws, rules, ordinances, etc.) against the industrial waste disposal company has increased, the disposal fee has increased. Are getting higher year by year.

[0004] Of course, with respect to the treatment of the antifreeze of the vehicle, it is conceivable to regenerate (recycle) it. However, even if the used antifreeze is regenerated so that it can be used by an appropriate regenerating device, if a general consumer uses the regenerated antifreeze and an accident such as engine trouble occurs, the automobile manufacturer etc. At present, sufficient assurance has not been established for consumers.

[0005] Under such circumstances, those skilled in the art of vehicle maintenance at present may use a method that does not require the used antifreeze to be drained as factory wastewater, or provide a treatment to an industrial waste disposal company. There is a need for a method for treating waste liquid of vehicles that does not need to be requested.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and a first object of the present invention is to provide a person skilled in the art of vehicle maintenance with running costs (installation costs, fuel costs, personnel costs, etc.). It is an object of the present invention to provide a method for treating a waste liquid of a vehicle, which can easily treat a used antifreeze without causing a pollution problem without applying as much as possible. A second object is to efficiently boil or evaporate the antifreeze in the evaporating dish or the evaporating dish provided in the combustor by utilizing the flame of the fuel (eg, waste oil) burning in the lower part of the combustor. That is what you can do. A third object is to prevent as much as possible no fuel scum from remaining in the fuel combustion process and no odor.

[0007]

According to the present invention, there is provided a method for treating waste liquid of a vehicle, comprising: a fuel supply step A in which fuel is supplied to a combustor through a fuel supply means and a fuel supply control means; An antifreeze supply step B for supplying the antifreeze to an evaporating dish or an evaporating dish provided in the combustor via an antifreeze supply means and an antifreeze flow control means, and fuel combustion for burning the fuel in a lower part of the combustor A step C, an antifreeze evaporation step D for boiling or evaporating the antifreeze in the evaporating dish or the evaporating dish portion using a flame generated during the combustion of the fuel in the fuel combustion step; An exhaust gas releasing step E of releasing the mixed exhaust gas of the antifreeze and the fuel burned in the fuel burning step to the atmosphere via a chimney.

In the above configuration, desirably, the antifreeze liquid flow control means 25 used in the antifreeze liquid supply step B includes an antifreeze liquid adjusting container 26 for adjusting the storage amount of the antifreeze liquid in relation to the amount of the antifreeze liquid in the evaporating dish 28. And a float valve 27 as a flow control valve provided in the antifreeze liquid control container 26. The antifreeze storage container 22B constituting the antifreeze supply means 20B is mounted on the combustor 1B. Further, the combustor 1A is formed to have an angled cross section, and has a lower combustion chamber 40 and an upper evaporation chamber 41 communicating with the combustion chamber 40 in the cross direction. A dish 28A is provided. Antifreeze supply step B
Liquid storage container 2 constituting antifreeze liquid supply hand 20 in the present invention
2 is provided with a heater 35 for preliminarily heating the stored antifreeze 3. In addition, the antifreeze liquid adjusting container 26A constituting the antifreeze liquid flow control means 25A used in the antifreeze liquid supply step B is mounted on a heating support plate 46 which is integrally provided with the combustor 1A.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a process diagram showing a method invention (waste liquid treatment method), while FIG. 2 is a schematic explanatory view of a product invention (waste liquid treatment apparatus) used in the method invention.

In FIG. 1 and FIG. 2, A is a fuel supply step of supplying fuel 2 to the combustor via a fuel supply means and a fuel supply control means. As the combustor, for example, a waste oil stove SG-50A type and a waste oil stove SUN-8 type sold by Shinshu Kogyo Co., Ltd. of Japan are suitable. This type of vertical stove is basically composed of a base plate (or base), a vertically long cylindrical body fixed to the upper surface of the base plate and having an ash extraction port, and a vertically long cylindrical body. And a chimney mounted on the upper part of the vertically long cylindrical body and discharging exhaust gas into the air.

The vertical combustor 1 of the waste liquid treatment apparatus shown in FIG.
Is an application of a stove of the type described above. This vertical combustor 1 is a type in which a fuel combustion means for burning fuel 2 discharged from a vehicle is combined with an antifreeze liquid evaporating means for evaporating the antifreeze 3 discharged from the vehicle by boiling. There are no types of combustors.

Therefore, first, the vertical combustor 1 as a fuel combustion means will be described. Reference numeral 4 denotes a flat rectangular base provided on the floor F, and a vertically long cylindrical main body 5 is fixed to an upper surface of the base 4. This vertically long cylindrical main body 5 has the same diameter at the lower end and that at the upper end, and has a general ordinary cylindrical shape. On the upper surface of the base 4, an air supply source (drive motor and fan) 7 for supplying air to an air inlet 6 formed below the vertically long cylindrical main body 5 is provided.

In the fuel supply step A, the fuel supply means 10
And the fuel supply control means 13 is used. As the fuel supply means 10, the fuel tank 10 which supplies the fuel 2 to the fuel supply control means 13 via the fuel guide member 12 such as a conduit, a guide hose, or the like is used. I have. This fuel tank 10
Generally has an opening / closing lid 10a and has a capacity of about 100 liters.

The fuel supply control means 13 is provided in a fuel supply path connecting the fuel tank 10 and the combustion dish 11 fixedly provided on the inner surface of the bottom wall of the vertical combustor 1. A regulating tank 14 and a first float valve 15 as a flow regulating valve provided in the fuel regulating tank 14.
Consisting of As is well known, the first float valve 15 includes a lever provided with a valve at a pivot support end, and a float provided at a free end of the lever.

Next, B is an antifreeze supply step for supplying the antifreeze 3 discharged from the vehicle to the evaporating dish 28 fixedly provided in the combustor 1 via the antifreeze supply means 20 and the antifreeze flow control means 25. . The antifreeze supply means 20 includes an antifreeze storage container 22 installed on the floor F via a relatively long support leg 21, and an antifreeze guide member 23 connecting the antifreeze storage container 22 and the antifreeze flow control means 25. . The antifreeze liquid guide member 23 also uses a conduit or a guide hose similarly to the fuel guide member.

The antifreeze liquid flow rate control means 25 is connected to the antifreeze storage container 22 and an evaporating dish 28 fixedly provided in the vertical combustor 1 or formed in the vertical combustor 1. An antifreeze adjusting container 26 that is provided in the supply path and adjusts the storage amount of the antifreeze in relation to the amount of the antifreeze in the evaporating dish 28, similarly to the fuel supply control unit 13 in the present embodiment;
A second float valve 27 as a flow control valve provided in the antifreeze liquid control container 26 is provided.

The evaporating dish 28 is provided at a position near the center of the vertically long cylindrical main body 5 through a plurality of supporting pieces 29 as shown in FIG. And should be provided at appropriate places. The evaporating dish 28
The antifreeze is water and ethylene glycol (alcohol)
Since it is a mixture with, it also has a combustion function.

Next, C is a fuel combustion step for burning fuel 2 in the lower part of the combustor. The fuel combustion means having the air supply source 7 and the combustion dish 11 has no difference from a general fuel combustor.

The fuel combustion means burns waste oil and the like discharged from the vehicle at the time of oil change as fuel 2 in the lower portion of the vertical combustor 1, while the antifreeze evaporating means uses the vertical combustor 1. Flame 19 generated during combustion of fuel 2
The antifreeze 3 taken out from the radiator of the vehicle at the time of replacing the antifreeze is evaporated or burned by boiling. Therefore, the term “waste liquid” in the present specification means both fuel such as engine oil, transmission oil, gear oil and the like, and antifreeze discharged from the radiator.

Next, D is an antifreeze evaporating step D for evaporating or burning the antifreeze in the evaporating dish 28 using the flame 19 generated during the combustion of the fuel 2 in the fuel combustion step C.
The evaporating dish 28 is heated by the flame 19, so that the antifreeze in the evaporating dish 28 boils. If it boils, the antifreeze will naturally evaporate or burn. Experimental results show that this boiling method
There was little "burnout" and little "smoke emission" and "smell". However, there is a disadvantage that the amount of the antifreeze liquid to be processed is small as compared with the nozzle injection type processing method and the run-down type processing method.

Next, E is an exhaust gas discharging step of discharging the mixed exhaust gas 30 of the antifreeze liquid evaporated in the antifreeze liquid evaporating step D and the fuel burned in the fuel burning step C to the atmosphere via the chimney 31. . The chimney 31 is attached to a neck-like tubular portion 32 a of an upper lid 32 which is detachably fitted to the upper end of the vertically long tubular main body 5.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first embodiment, it is desirable to use waste oil as the fuel 2. In this case, kerosene or heavy oil may be added to the waste oil. However, if there is no waste oil, kerosene may be used. Further, a neck-like tubular portion 16 may be formed on the upper part of the vertically long tubular body 5. Further, the shape of the vertically long cylindrical main body 5 may be formed so that the radius gradually increases at least from the center to the upper end (so-called trumpet shape). Further, as shown in FIG. 3, a heater 35 for preliminarily warming the stored antifreeze 3 may be attached to the antifreeze storage container 22. When the antifreeze 3 in the antifreeze storage container 22 is preliminarily heated by the heater 35 as in the embodiment of FIG.
This has the advantage that the boiling, evaporation or combustion of the antifreeze 3 in the evaporating dish 28 is promoted, and as a result, the throughput of the antifreeze 3 is increased.

Next, FIG. 4 is a schematic explanatory view of another waste liquid treating apparatus (second embodiment of the apparatus) used in the method of the present invention. The waste liquid treatment apparatus according to the second embodiment is directly used in the invention of the method of the present invention. Therefore, since the first embodiment of the above-described apparatus (the waste liquid treatment apparatus shown in FIG. 2) and the main part (indispensable components) of the invention are common to each other, the same parts as in the first embodiment of the apparatus are structurally identical. For the sake of convenience, the same or similar reference numerals are given, and redundant description will be omitted.

First, the combustor 1 used in the fuel supply step A
The difference is that A has an angled cross section. This combustor 1A
Has, so to speak, a lower combustion chamber 40 and an upper evaporation chamber 41 communicating with the combustion chamber 40 in a cross direction.
The evaporation chamber 41 is provided with an evaporation dish 28A. The evaporating dish portion 28A may be formed integrally with the evaporating chamber 41 as shown in FIG. 4, or a horizontal can-shaped evaporating dish may be separately provided. The combustion chamber 40 is provided with an ash extraction port, while the evaporation chamber 41 is provided with an ember extraction port 43. This combustor 1A is also fixedly provided on a base 4A installed on the floor F1.

Air supply source (drive motor and fan)
The fuel supply control means 7A and the fuel supply control means 13A are located below the evaporation chamber 41, although they are installed on the base 4A. Therefore, the air duct 44 connecting the combustion chamber 40 of the combustor 1A and the air supply source 7A is appropriately disposed. Note that the air duct 44 may be provided in a bifurcated state (two-line system) on the way to increase the evaporation efficiency in the evaporation chamber 41, and the other may be provided to the combustion chamber 40 via the evaporation chamber 41. The fuel supply means 10A and the fuel supply control means 13
A is the same.

Next, the difference is that the antifreeze liquid flow control means 25A used in the antifreeze liquid supply step B is directly mounted on the combustor 1A. That is, 46 is the evaporation chamber 4 of the combustor 1A.
The antifreeze liquid adjusting container 26A constituting the flow rate control means 25A is mounted on the heating support plate 46, which is integrally provided with the upper portion 47 of the heating support plate 46. Therefore, the antifreeze 3A sent from the antifreeze storage container 22A of the antifreeze supply means 20A to the antifreeze adjustment container 26A.
Is heated indirectly or preliminarily via a heating support plate 46 heated by the heat of the combustor 1A.

Next, in the antifreeze liquid evaporation step D, as shown in FIG. 4, the heating power of the evaporating dish 28A of the combustor 1A and the heat passing through the flame 19A generated by the fuel combustion step C (as indicated by the arrow, the flame 19A Through the evaporation chamber 41)
The antifreeze 3A in the evaporating dish 28A evaporates. This is also slightly different.

That is, in the first embodiment of the apparatus,
While the evaporating dish 28 is directly heated by the flame 19, in the second embodiment of the apparatus, the evaporating dish 28A is heated by the combustor itself, and the flame 19A moves the evaporating chamber 41 in the lateral direction. At the top of the antifreeze 3A.
Therefore, the second embodiment of the apparatus is different in that the antifreeze 3A is boiled or evaporated by positively utilizing the heating power of the combustor 1A itself and the heat passing through the flame 19A.

In the second embodiment of the apparatus, an antifreeze storage container 22B constituting the antifreeze supply means 20B may be directly mounted on the combustor 1B as shown in FIG.
With this configuration, at least the antifreeze storage container 22B
Since the antifreeze 3B is heated to a boiling state in advance, the antifreeze can be more efficiently boiled, evaporated or burned in the evaporating dish 28B.

[0030]

As is clear from the above description, the present invention has the following effects. (1) The person skilled in the field of vehicle maintenance should minimize running costs (installation costs, fuel costs, labor costs, etc.)
The used antifreeze can be easily treated without causing any pollution problem. (2) Since an evaporating dish or evaporating dish is provided in the combustor,
Does not adversely affect the combustion power of the fuel. Therefore, the combustion state of the fuel can always be kept in a good state. (3) According to the above (2), the fuel burnt in the fuel burning process does not remain as desired and no odor is generated. (4) In the case of the second embodiment of the apparatus, in particular, since the heating power of the combustor itself and the heat passing through the flame of the fuel are used, the antifreeze can be efficiently boiled, evaporated or burned.

[Brief description of the drawings]

FIG. 1 is a process chart showing an example of the method of the present invention.

FIG. 2 is a schematic explanatory view of a first embodiment (waste liquid treatment apparatus) of the apparatus used in the present invention.

FIG. 3 is a schematic explanatory view showing a modification of the first embodiment of the apparatus.

FIG. 4 is a schematic explanatory view of a second embodiment (waste liquid treatment apparatus) of the apparatus used in the present invention.

FIG. 5 is a schematic explanatory view showing a modification of the second embodiment of the device.

[Explanation of symbols]

A: fuel supply step, B: antifreeze supply step, C: fuel combustion step, D: antifreeze evaporation step, E: exhaust gas release step,
1, 1A: combustor, 2, 2A: fuel, 3, 3A: antifreeze, 4, 4A: base, 5, vertical cylinder body, 7, 7A: air supply source, 10, 10A: fuel tank, 13, 13A ...
Fuel supply control means, 14: fuel adjustment tank, 15: first
Float valve, 19, 19A ... Flame, 20, 20A ...
Antifreeze supply means, 21: support leg, 22, 22A: antifreeze storage container, 23: antifreeze guide member, 25: flow control means, 26, 26A: antifreeze adjustment container, 27: second float valve, 28: evaporating dish, 28A ... Evaporation dish part, 30 ... mixed exhaust gas, 31 ... chimney, 32 ... top lid, 35 ... heater, 40 ... combustion chamber, 41 ... evaporation chamber, 44 ... air duct, 46 ... heating support plate, 47 ... upper part.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoshi Kaneko Inside Nissan Altia Co., Ltd. 3-5-28 Mita, Minato-ku, Tokyo (72) Inventor Yamazakisaki Shigetoku 1-Sumizaka Minami, Suzaka City, Nagano Prefecture 18-13 Shinshu Kogyo Co., Ltd. (56) References JP-A-57-62318 (JP, A) JP-A-56-30526 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) F23G 7/04 601 F23G 7/04 ZAB

Claims (7)

(57) [Claims] 1. A fuel supply step A for supplying fuel to a combustor via a fuel supply means and a fuel supply control means.
An antifreeze liquid supply step B for supplying the antifreeze discharged from the vehicle to an evaporating dish or an evaporating dish provided in the combustor via an antifreeze liquid supply means and an antifreeze liquid flow control means; and Combustion process C for burning oil
An antifreeze evaporating step D for boiling or evaporating the antifreeze in the evaporating dish or the evaporating dish portion by utilizing a flame generated during the combustion of the fuel in the fuel burning step; and an antifreeze liquid evaporated in the antifreeze evaporating step. And an exhaust gas discharging step E of discharging mixed exhaust gas of the fuel burned in the fuel burning step to the atmosphere via a chimney. 2. The antifreeze liquid adjusting container according to claim 1, wherein the antifreeze liquid flow rate control means used in the antifreeze liquid supply step B adjusts the storage amount of the antifreeze liquid in relation to the amount of the antifreeze liquid in the evaporating dish. 26, and a float valve 27 as a flow control valve provided in the antifreeze liquid control container 26. 3. The antifreeze liquid 3A according to claim 1, wherein in the antifreeze liquid evaporation step D, the antifreeze liquid 3A is not boiled by actively utilizing the heating power of the combustor 1A itself and the heat passing through the flame 19A generated in the fuel combustion step C. A method for treating a waste liquid of a vehicle, wherein the waste liquid is evaporated. 4. The combustion chamber 1A according to claim 1, wherein the combustor 1A is formed to have an angled cross section, and a lower combustion chamber 40 and an upper evaporation chamber 41 communicating with the combustion chamber 40 in a cross direction.
Wherein the evaporating chamber 41 is provided with an evaporating dish 28A. 5. The antifreeze liquid supply means according to claim 1,
A method for treating waste liquid of a vehicle, wherein the antifreeze storage container 22B constituting B is mounted on the combustor 1B. 6. The antifreeze storage container 22 constituting the antifreeze supply hand 20 in the antifreeze supply step B according to claim 1.
Has a heater 3 for preliminarily heating the stored antifreeze 3
5. A method for treating a waste liquid of a vehicle, comprising: 7. The antifreeze adjusting container 26A constituting the antifreeze liquid flow rate control means 25A used in the antifreeze liquid supply step B includes a heating support plate 46 integrally protruded from the combustor 1A. Waste liquid treatment method for a vehicle, wherein the method is disposed on a vehicle.