JPH09196342A - Incinerator for substances containing oil such as waste oil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an incinerator for substances including oil such as waste oil or the like of which the structure is simple and the substances including oil such as waste oil or the like can be completely ignited. SOLUTION: An outer circumferential air passage 11 is arranged between an inner wall 8 of an incinerator and an outer wall 9 of the incinerator arranged at the outer circumference of the inner wall 8 of the incinerator in such a way that the inner wall 8 of the incinerator is enclosed by it. A lower air passage 16 communicating with an outer circumferential air passage 11 is arranged between an inner bottom part 14 of the lower end of the inner wall 8 of the incinerator and a lower bottom part 15 of the lower end of the outer wall 9 of the incinerator,. There is provided an air supplying port 6 for supplying air into the lower air passage 16 in such a way that an air stream may be formed ranging from an inside area to an outer circumferential air passage 11. A central cylinder 17 having its upper end closed and its lower end communicating with the lower air passage 16 is arranged at a substantial central part of a combustion chamber 7 within the inner wall 8 of the incinerator. A plurality of outside air blowing ports 12 for use in blowing out air from the outer circumferential air passage 11 into the combustion chamber 7 in the inner wall 8 of the incinerator are spaced apart in a circumferential direction and in a vertical direction at the inner wall 8 of the incinerator, and a plurality of inward air blowing ports 19 for blowing air from the lower air passage 16 to the combustion chamber 7 through inside the central cylinder 17 are arranged at the central cylinder 17 in a circumferential direction and in a vertical direction, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for incinerating oil-containing substances such as waste oil and oil mud.

[0002]

2. Description of the Related Art Conventionally, when disposing of oil-containing substances such as waste oil and oil mud, the method of directly discarding them in a landfill, the method of incineration in an incinerator, or the method of reprocessing and reuse Etc. However, if it is dumped directly into a landfill, it will cause pollution problems such as environmental damage, and when reprocessing, it will have the advantage of being able to effectively use resources, but on the other hand, the equipment for reprocessing will be larger. However, there is a cost problem in collecting and processing a small amount of waste oil and the like. Therefore,
As a method for efficiently treating a small amount of waste oil, etc., a method of incineration in an incinerator has been generally adopted, and various incinerators that symmetrically incinerate oil-containing substances such as waste oil have been proposed. There is.

[0003]

The conventional incinerator is structurally complicated and has a problem in durability. In addition, in the incinerator having a simple structure, air for gasified oil-containing substance gas is removed. It has a drawback that it does not travel well, and when it burns, it emits toxic gas due to incomplete combustion and produces a large amount of black smoke. Therefore, when an oil-containing substance such as waste oil is incinerated in a conventional incinerator, there is a fear that toxic gas, black smoke, etc. generated at that time may cause new pollution. The present invention has been made in view of the above problems, and an object thereof is to provide an incinerator for an oil-containing substance such as waste oil that can efficiently burn an oil-containing substance such as waste oil completely.

[0004]

According to the present invention as set forth in claim 1, an outer circumference is provided between a furnace inner wall 8 and a furnace outer wall 9 arranged on the outer circumference of the furnace inner wall 8 so as to surround the furnace inner wall 8. Air passage
11, the inner bottom 14 of the lower end of the furnace inner wall 8 and the lower bottom of the lower end of the furnace outer wall 9
A lower air passage 16 communicating with the outer peripheral air passage 11 is provided between the lower air passage 16 and the lower air passage 16, and air is supplied into the lower air passage 16 so that an air flow can be made from the inside to the outer peripheral air passage 11. An air supply port 6 is provided, and a central cylinder 17 having an upper end closed and a lower end communicating with a lower air passage 16 is provided at a substantially central portion of a combustion chamber 7 in an inner wall 8 of the furnace. The outer outlet 12 that blows out to the combustion chamber 7 in the inner wall 8 is directed to the inner wall 8 of the furnace, and the inner outlet 19 that blows air from the lower air passage 16 into the combustion chamber 7 through the inside of the central cylinder 17 is circumferentially directed to the central cylinder 17. In addition, a plurality of them are provided at predetermined intervals in the vertical direction.

According to a second aspect of the present invention, in the first aspect of the invention, an air supply port 6 is provided tangentially on the outer peripheral side of the lower air passage 16.

According to a third aspect of the present invention, in the invention according to the first or second aspect, oil-containing substance dropping means 5 and 25 for dropping an oil-containing substance such as waste oil from the upper side in the combustion chamber 7 are provided. Is.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. The drawings illustrate one embodiment of the invention.
1 to 4, reference numeral 1 is an incinerator body, and a chimney 3, a water heating tank 4 and a supply hopper 5 are provided on the upper side of the incinerator body 1 via a furnace lid 2, and the incinerator body 1 is also provided.
An air supply port 6 and an ignition port 7a are provided in the lower part of the.

The incinerator body 1 has a combustion chamber 7 with an open upper side.
A furnace inner wall 8 that forms a cylinder is provided, and a furnace outer wall 9 that is arranged substantially concentrically on the outer peripheral side of the furnace inner wall 8 at a predetermined interval. A space between the upper ends of the furnace inner wall 8 and the furnace outer wall 9 is closed by a ring-shaped closing plate 10 connecting the both in a substantially concentric manner.

Between the furnace inner wall 8 and the furnace outer wall 9, the furnace inner wall 8
An outer peripheral air passage 11 is provided so as to surround the outer periphery,
In addition, the air from the outer peripheral air passage 11 is introduced into the combustion chamber on the inner wall 8
A large number of outer outlets 12 are provided in the circumferential direction and in the vertical direction to blow out into the inside. That is, the inner wall 8 of the furnace is provided with a plurality of outer outlets 12 arranged in a row at four positions arranged at equal intervals in the circumferential direction and arranged in the inclined direction at regular intervals.

Each row of the outer outlets 12 is shown in FIG. 5 and FIG.
As shown in FIG. 4, the furnace inner walls 8 are arranged in a substantially straight line at regular intervals in an oblique direction so that one end side in the circumferential direction is the upper side. Then, on the outer peripheral surface of the furnace inner wall 8, near the lower side of the outer outlets 12 of each row, when the air supply is started,
A strip-shaped guide plate 13 that is inclined in the column direction is fixed so as to guide the air that swirls in the outer peripheral air passage 11 along the inner peripheral surface of the outer peripheral air passage 11 to the respective outer outlets 12 side.

An inner bottom 14 is provided at the lower end of the furnace inner wall 8, and a lower bottom 15 is provided at the lower end of the furnace outer wall 9. Inner bottom 14 and lower bottom 15
Is approximately the same as the distance between the furnace inner wall 8 and the furnace outer wall 9, and a lower air passage 16 communicating with the lower end of the outer peripheral air passage 11 is provided between the two. At the center of the combustion chamber 7, a central cylinder 17 protruding upward from the inner bottom 14 is provided.
It is fixed substantially concentrically with respect to.

The central cylinder 17 is closed at its upper end side by a closing plate 18 and is connected at its lower end to the lower air passage 16. The central cylinder 17 is provided with a large number of inner blow-out ports 19 in the circumferential direction and in the vertical direction for blowing air from the inside to the flame in the combustion chamber 7. That is, the central cylinder 17 is provided with a plurality of inner outlets 19 in a row at regular intervals in the vertical direction at four locations arranged at equal intervals in the circumferential direction.

The air supply port 6 is for supplying combustion air into the combustion chamber 7 from the blowout ports 12 and 19 through the lower air passage 16, and is tangential to the lower air passage 16. Thus, it is provided at the lower end of the outer wall 9 of the furnace. In addition,
An air blower (not shown) is connected to the air supply port 6.

The ignition port 7a is used for igniting kerosene or the like put in the combustion chamber 7 as a preheating fuel when incinerating an oil-containing substance such as waste oil, and a furnace for communicating with the inside of the combustion chamber 7 An opening / closing lid 20 provided between the lower ends of the inner wall 8 and the furnace outer wall 9 and pivotally supported by a hinge 21 so as to be freely opened and closed around the horizontal axis.
Is closed by.

The furnace lid 2 is for closing the upper end opening of the combustion chamber 7 so as to be openable and closable, and is hinged to the upper end portion of the outer furnace wall 9 by a hinge 22 so as to be openable and closable. A chimney 3 at the center of the hearth 2
Is fixed, and the boiling water tank 4 is fixed on the furnace lid 2 on the outer peripheral side of the chimney 3. The water heating tank 4 is provided with a water supply port 23 on the upper side and a hot water supply port 24 on the lower side outside.

The supply hopper 5 is used for containing an oil-containing substance such as waste oil to be incinerated, and the water supply port 23 is provided to the chimney 3.
It is fixed on the upper side of the water heating tank 4 on the opposite side.
To the lower part of the supply hopper 5, a supply pipe 25 for dropping a fixed amount of oil-containing substance such as waste oil in the supply hopper 5 is connected. The supply pipe 25 includes a vertical pipe portion 25a and a bent pipe portion 25b.
The vertical pipe portion 25a is arranged in the vertical direction outside the kettle tank 4 and has an upper end connected to the supply hopper 5.

The bent pipe portion 25b is arranged so as to project from the lower end side of the vertical pipe portion 25a to the opening side of the combustion chamber 7 through the lower side of the water heating tank 4, and from the tip thereof to the furnace inner wall 8 in the combustion chamber 7
The oil-containing substance is dripped little by little between the center tube 17 and the central cylinder 17. The supply hopper 5 and the supply pipe 25 constitute oil-containing substance dropping means for dropping an oil-containing substance such as waste oil into the combustion chamber 7 from above.

When incinerating oil-containing substances such as waste oil, open the furnace lid 2 and put an appropriate amount of kerosene in the combustion chamber 7, then ignite the kerosene from the ignition port 7a and operate the blower. Then, air is pressure-fed from the air supply port 6 into the lower air passage 16. Then, kerosene or the like in the combustion chamber 7 burns, and the heat of combustion heats the incinerator body 1 or the like to sufficiently raise the temperature in the combustion chamber 7.

When the temperature of the combustion chamber 7 rises sufficiently, an oil-containing substance such as waste oil is put in the supply hopper 5, and the oil-containing substance is supplied to the combustion chamber 7 side through the supply pipe 25, and the tip of the supply pipe 25 is supplied. Drop by drop little by little. The oil-containing substance is preferably mixed with various kinds of waste oil and agitated to obtain a substantially constant oil quality.

When an oil-containing substance such as waste oil is dropped from the supply pipe 25 into the combustion chamber 7, the oil-containing substance falls while being heated by the combustion heat in the combustion chamber 7 and is gasified and burned during or after the fall. To do. At this time, if air is started to be tangentially supplied from the air supply port 6 into the lower air passage 16 by the blower, after the air swirls in the lower air passage 16, the air is blown to the inner peripheral surface of the outer wall 9 of the furnace. While turning along, it moves from the lower air passage 16 to the outer peripheral air passage 11 side, and turns inside the outer peripheral air passage 11 to rise. Meanwhile, the lower air passage 16
The air inside moves to the inside of the central cylinder 17 via the lower end of the central cylinder 17.

As the outer peripheral air passage 11 and the center cylinder 17 are filled with air, the air is blown from the outer outlet 12 of the furnace inner wall 8 and the inner outlet 19 of the center cylinder 17 into the combustion chamber.
It is blown into the inside with high pressure. Therefore, the combustion air can be supplied into the combustion chamber 7 from both inside and outside thereof, so that the oil-containing substance in the combustion chamber 7 can be completely burned.

In particular, since air is tangentially supplied from the air supply port 6 into the lower air passage 16, a swirling flow of air is generated in the outer peripheral air passage 11 at the beginning of the supply.
The air blown into the combustion chamber 7 from the outer outlet 12 becomes a gentle swirling flow in the combustion chamber 7. For this reason,
The flame of the oil-containing substance to be burned is fueled by the air blown from the outer blow-out port 12 and slowly swirls in the combustion chamber 7 or burns while fluctuating in the swirling direction.

After the outer peripheral air passage 11 and the central cylinder 17 are filled with air, if the lower air passage 16 is pressurized by the air pressure supplied from the air supply port 6, the respective air outlets 12, Since high-pressure air is blown into the combustion chamber 7 from 19, the flame of the oil-containing substance is violently agitated by the air, and the combustion air can be sufficiently supplied to the oil-containing substance gas such as waste oil or the flame thereof. Therefore, the mixing of air with the oil-containing substance gas or the flame thereof is very good, and the oil-containing substance is completely combusted, so that the generation of toxic gas or black smoke due to incomplete combustion of the oil-containing substance can be reliably prevented.

On the outer peripheral surface of the inner wall 8 of the furnace, there are guide plates 13 along the outer outlets 12 in four rows.
Since the air swirling along the inner peripheral surface of 9 is guided to the outer outlet 12 side, the air can be reliably supplied from each outer outlet 12 into the combustion chamber 7 at the beginning of the supply of air.

Further, since the guide plate 13 is inclined so as to scoop a part of the air swirling along the inner peripheral surface of the furnace outer wall 9 toward the outer outlet 12 side when the air supply is started, the guide plate 13 is
13 allows air to be swirled in the combustion chamber 7,
The swirling flow of air in the combustion chamber 7 immediately after the start of the supply becomes more reliable. Further, since the guide plate 13 is inclined so that the lower side of the turning direction is higher, the air supplied from the air supply port 6 into the lower air passage 16 is swung in the outer air passage 11 by the guide plate 13. It can be quickly raised and guided to each outer outlet 12 side.

Further, the guide plate 13 has a function as a reinforcing rib for the furnace inner wall 8 and improves the durability of the furnace inner wall 8. If water is put in the boiling water tank 4, it is possible to burn the oil-containing substance such as waste oil in the combustion chamber 7 and boil the hot water by utilizing the combustion heat. Therefore, oil-containing substances such as waste oil can be used as fuel for boiling water.

The oil-containing substance such as waste oil in the supply hopper 5 is
Since the oil is dripped little by little into the combustion chamber 7 through the supply pipe 25, the oil-containing substance can be easily and safely supplied into the combustion chamber 7. Moreover, the water heating tank 4 is provided between the supply hopper 5 and the combustion chamber 7.
Due to the heat insulating function of the water heating tank 4, it is possible to prevent ignition of oil-containing substances such as waste oil in the supply hopper 5.

Further, at the same time as preventing the ignition, the oil-containing substance in the supply hopper 5 can be appropriately heated by the heat from the combustion chamber 7. Therefore, even if the oil-containing substance is mud oil having a high viscosity, the viscosity of the oil-containing substance increases due to the temperature rise. Can be lowered and can be easily supplied into the combustion chamber 7 through the supply pipe 25. Since the supply pipe 25 is L-shaped and extends to the upper end opening side of the combustion chamber 7 via the outside of the water heating tank 4, the oil-containing substance in the supply hopper 5 is ignited via this supply pipe 25. I have no fear.

When oil mud or the like is incinerated, slag accumulates on the inner bottom 14 of the furnace inner wall 8, which is caused by rotating the furnace lid 2 about the horizontal axis of the hinge 22 and opening the combustion chamber 7. After opening
The slag may be removed from the opening side on the inner bottom 14. Although one embodiment of the present invention has been described above, the present invention can be variously modified without departing from the spirit thereof.

For example, when the outer outlets 12 are provided on the inner wall 8 of the furnace, they may be arranged in a row in the vertical direction, or on the entire surface of the inner wall 8 in the vertical and horizontal directions at predetermined intervals, or You may arrange in a staggered manner. Guide plate 13 inside the furnace
If it is provided on the inner wall 8 of the furnace, the inner wall 8 of the furnace can be reinforced by the guide plate 13, and although the inner wall 8 is provided with a large number of outer outlets 12, the strength of the inner wall 8 of the furnace can be sufficiently secured. When ejecting high pressure air from the outlet 12,
Since there is almost no guiding action for air, it may be omitted. In the embodiment, the boiling water tank 4 is provided on the upper side of the furnace lid 2, but the hot air from the chimney 3 may be guided by a duct or the like and used as a heat source for heating in the vinyl greenhouse or the like.

[0031]

According to the present invention as set forth in claim 1, an outer peripheral air passage is provided between the furnace inner wall 8 and the furnace outer wall 9 arranged on the outer periphery of the furnace inner wall 8 so as to surround the furnace inner wall 8. 11 is provided, and a lower air passage 16 communicating with the outer peripheral air passage 11 is provided between the inner bottom 14 at the lower end of the furnace inner wall 8 and the lower bottom 15 at the lower end of the furnace outer wall 9,
The lower air passage 16 is provided with an air supply port 6 for supplying air into the lower air passage 16 so that an air flow can be formed from the inside to the outer peripheral air passage 11, and a substantially central portion of the combustion chamber 7 inside the furnace inner wall 8 is provided. Is provided with a central cylinder 17 whose upper end is closed and whose lower end communicates with the lower air passage 16, and the air from the outer peripheral air passage 11 is introduced into the furnace inner wall.
The outer outlet 12 that blows out to the combustion chamber 7 in the
In addition, since a plurality of inner outlets 19 for blowing the air from the lower air passage 16 into the combustion chamber 7 through the inside of the central cylinder 17 are provided in the central cylinder 17 at predetermined intervals in the circumferential direction and the vertical direction, respectively, By burning the oil-containing substance such as waste oil while supplying it to the chamber 7 little by little, the oil-containing substance such as waste oil can be completely burned easily. Can be prevented.

According to the second aspect of the present invention, in the first aspect of the invention, since the air supply port 6 is provided tangentially on the outer peripheral side of the lower air passage 16, the air supply port is provided.
Air can be smoothly supplied from 6 into the lower air passage 16.

According to the present invention of claim 3, in the invention of claim 1 or 2, oil-containing substance dropping means 5, 25 for dropping oil-containing substance such as waste oil from above are provided in the combustion chamber 7. Therefore, an appropriate amount of oil-containing substance such as waste oil can be dropped into the combustion chamber 7.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a front view of a guide plate portion showing an embodiment of the present invention.

6 is a sectional view taken along the arrow C in FIG.

[Description of sign]

 1 incinerator body 2 furnace lid 4 kettle tank 5 supply hopper 6 air supply port 7 combustion chamber 8 furnace inner wall 9 furnace outer wall 11 outer air passage 12 outer outlet 13 guide plate 14 inner bottom 15 lower bottom 16 lower air passage 17 center tube 19 Inside outlet 25 Supply pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location F23G 5/32 ZAB F23G 5/32 ZAB 7/05 ZAB 7/05 ZABC ZABS

Claims (3)

[Claims] 1. An outer air passage (11) is provided between the inner wall (8) of the furnace and the outer wall (9) of the inner wall of the furnace (8) so as to surround the inner wall (8) of the furnace. Provided, inner bottom of furnace inner wall (8) lower end
(14) and the outer air passage between the outer wall (9) and the bottom of the lower end (15)
A lower air passage (16) communicating with (11) is provided, and air is allowed to flow in the lower air passage (16) from the inside to the outer air passage (11). A central cylinder (17) having an air supply port (6) for supply and a substantially central portion of the combustion chamber (7) inside the furnace inner wall (8) with its upper end closed and its lower end communicating with the lower air passageway (16). Is installed to blow air from the outer air passage (11) into the combustion chamber (7) inside the furnace wall (8).
2) to the inner wall of the furnace (8), and the air from the lower air passage (16) is blown into the combustion chamber (7) through the center tube (17).
An incinerator for oil-containing substances such as waste oil, characterized in that a plurality of (9) are provided in the central cylinder (17) at predetermined intervals in the circumferential direction and the vertical direction, respectively. 2. The incinerator for oil-containing substances such as waste oil according to claim 1, wherein an air supply port (6) is provided tangentially on the outer peripheral side of the lower air passage (16). 3. The waste oil or the like according to claim 1 or 2, characterized in that an oil-containing substance dropping means (5) (25) for dropping an oil-containing substance such as waste oil from above is provided in the combustion chamber (7). Incinerator for oil-containing substances.