JPH1163459A - Waste liquid combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contribute to the prevention of air pollution and environmental protection by suppressing the discharge of smoke and harmful substances to atmosphere. SOLUTION: A waste liquid combustion device comprises a housing part 2 having a waste liquid combustion chamber 2f for burning waste liquid L in a pre-stage and an exhaust gas processing chamber 2s for processing exhaust gas G generated under the combustion of the waste liquid L in a post-stage. a wast liquid supply part 3 for supplying waste liquid L to the waste liquid combustion chamber 2f, an air supply part 4 for combustion of the waste liquid for supplying outside air A to the waste liquid combustion chamber 2f, an air supply part 5 for processing exhaust gas for supplying outside air A to the exhaust gas processing chamber 2s and an exhaust duct 6 facing the exhaust gas processing chamber 2s.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste liquid combustion apparatus for burning waste liquid such as gear oil generated in factories or the like.

[0002]

2. Description of the Related Art Conventionally, there is known a waste liquid stove (a waste liquid combustion device) for burning various waste liquids such as gear oil, refrigerating machine oil, hydraulic oil, quenching oil, cutting oil, and automobile engine oil generated in factories and the like. .

[0003] This type of waste liquid stove supplies collected waste liquid to a combustion dish in a housing portion and, after ignition, burns it while forcibly supplying outside air, thereby incinerating various waste liquids that cannot be disposed of as they are. it can.

[0004]

The waste liquid includes a combustible waste liquid and a combustible waste liquid. For example, with engine oil, the amount of heat generated during combustion is 10,000
It burns very well at about 0 kcal / liter, whereas that of water-soluble cutting oil is 1,000 kcal.
/ Liter, which varies greatly depending on the type of waste liquid.

[0005] Therefore, in the conventional waste liquid combustion apparatus which merely burns the waste liquid, there is a possibility that a large amount of smoke is generated depending on the type of the waste liquid, or that the combustion is insufficiently released to the atmosphere as a harmful substance. There was a problem that was not sufficient in terms of air pollution prevention and environmental protection.

[0006] The present invention has solved the problems existing in the prior art, and in particular, a waste liquid that can contribute to prevention of air pollution and environmental protection by suppressing emission of smoke and harmful substances to the atmosphere. The purpose is to provide a combustion device.

[0007]

According to the present invention, when a waste liquid combustion apparatus 1 for burning and processing waste liquid L is provided, a waste liquid combustion chamber 2f for burning the waste liquid L is provided in a preceding stage, and a waste liquid combustion chamber 2f is provided in a latter stage. A housing part 2 provided with an exhaust treatment chamber 2s for treating exhaust gas G generated by combustion of L, a waste liquid supply part 3 for supplying waste liquid L to a waste liquid combustion chamber 2f, and a waste liquid for blowing outside air A to the waste liquid combustion chamber 2f Combustion blower 4 and exhaust treatment blower 5 that blows outside air A into exhaust treatment chamber 2s.
And an exhaust duct 6 facing the exhaust processing chamber 2s.

In this case, according to a preferred embodiment, the housing portion 2 is formed to be horizontally long, and a part of the intermediate portion is partitioned to provide a waste liquid combustion chamber 2f on one side in the horizontal direction and the other side in the horizontal direction. Is provided with an exhaust processing chamber 2s. Further, the waste liquid combustion blowing section 4 has a vertically long main pipe section 12 having a large number of air holes 13 on its peripheral surface, and branches off from the lower peripheral surface of the main pipe section 12 to blow air to the waste liquid L surface. A plurality of thin branch pipe sections 14
, And the exhaust processing air blowing unit 5 further includes a horizontally long air blowing duct 15 having a large number of air holes 16 on the peripheral surface. On the other hand, the waste liquid combustion device 1
A control unit 18 that detects the combustion temperature by a temperature sensor 17 and controls the air volume of the waste liquid combustion air blowing unit 4 and / or the exhaust processing air blowing unit 5 based on the combustion temperature can be provided. In addition, the waste liquid combustion apparatus 1 can constitute a waste liquid stove 1s.

Thus, the recovered waste liquid L is supplied from the waste liquid supply unit 3 to the waste liquid combustion chamber 2f, and the waste liquid L in the waste liquid combustion chamber 2f is ignited by a light source such as a lighter and burns. At the same time, the outside air A is supplied into the waste liquid combustion chamber 2f by the waste liquid combustion blower 4. On the other hand, the exhaust gas G generated by the combustion of the waste liquid L enters the exhaust processing chamber 2s, and the exhaust gas G is processed in the exhaust processing chamber 2s. That is, the exhaust gas G that has entered the exhaust processing chamber 2s.
Is completely combusted by a sufficient amount of outside air A supplied from the exhaust processing blower 5, and then is discharged into the atmosphere through the exhaust duct 6. Therefore, the exhaust gas G in the exhaust processing chamber 2s
Due to the complete combustion, the generation of smoke is suppressed and the release of harmful substances such as dioxin is also suppressed.

[0010]

Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, the configuration of a waste liquid combustion apparatus 1 according to the present embodiment will be described with reference to FIGS. The embodiment exemplifies a case where the waste liquid stove 1s is constituted by the waste liquid combustion device 1.

In the figure, reference numeral 30 denotes a base.
The horizontally long housing part 2 is installed on the base member 0 via legs 31. The housing portion 2 is formed in a horizontal cylindrical shape with both ends closed, and an upper partition portion 32 and a lower partition portion 33 are provided on the inner wall. Thereby, a part of the intermediate portion of the housing portion 2 is partitioned, and a waste liquid combustion chamber 2f for burning the waste liquid L is provided on one side (front stage) in the horizontal direction, and a waste liquid L is provided on the other side (rear stage).
Exhaust processing chamber 2s for processing exhaust G generated by combustion of
Are respectively partitioned. In this case, the upper partition 32 guides the flow direction of the exhaust gas G, and the lower partition 33 constitutes a combustion dish for storing and burning the waste liquid L. Since the waste liquid combustion chamber 2f has a circular cross section as shown in FIG. 2, the liquid surface area (combustion area) of the waste liquid L can be changed by changing the liquid level of the waste liquid L accumulated in the combustion dish. The liquid level of the waste liquid L can be easily changed by the installation height of the waste liquid tank 36 described later. The height of the lower partition 33 is set to about 1/3 to 1/2 of the height of the waste liquid combustion chamber 2f, and the volume of the exhaust treatment chamber 2s is twice the volume of the waste liquid combustion chamber 2f. It is desirable to set to about. In FIG.
Is a guard that covers the periphery of the housing portion 2 and is formed by a combination of thin frames.

On the other hand, a waste liquid supply unit 3 for supplying a waste liquid L to the waste liquid combustion chamber 2f is attached to one end face 2p of the housing unit 2 facing the waste liquid combustion chamber 2f.
On the peripheral surface of the housing portion 2 located above f, a waste liquid combustion blower 4 for blowing outside air A to the waste liquid combustion chamber 2f is mounted.

The waste liquid supply section 3 includes a waste liquid supply pipe 35 to which an open / close valve 37 is connected in the middle. The front end of the waste liquid supply pipe 35 faces the waste liquid combustion chamber 2f, and the rear end of the waste liquid supply pipe 35 is installed on the base 30. Connect to waste liquid tank 36. Also,
As shown in FIG. 3, the waste liquid tank 36 is connected to a main tank 39 arranged at a higher position than a pipe 38. Further, inside the waste liquid tank 36, a float switch 40 for controlling the supply of the waste liquid L from the main tank 39 is provided, and a heater for heating the waste liquid L and a temperature sensor for detecting the temperature of the waste liquid L are provided. Feedback control is performed so that the temperature of L becomes a set value.

The waste liquid combustion blower 4 includes a blower 41 disposed outside the housing 2 and a blower duct 11 for supplying outside air A blown from the blower 41 into the waste liquid combustion chamber 2f. The blower 41 can change the air volume by a built-in inverter function unit. On the other hand, air duct 1
Reference numeral 1 denotes a vertically long main pipe portion 12 which is disposed substantially at the center of the waste liquid combustion chamber 2f, has a large number of air holes 13 on the peripheral surface, and has a closed lower end, and a lower end of the main pipe portion 12. It is provided with a plurality of narrow branch pipe sections 14 that branch off from the peripheral surface and blow air to the liquid surface of the waste liquid L.

On the other hand, on the other end surface 2q of the housing part 2 facing the exhaust processing chamber 2s, an exhaust processing air blowing part 5 for blowing outside air A to the exhaust processing chamber 2s is mounted. An exhaust duct 6 communicating with the exhaust processing chamber 2s is mounted.

The exhaust processing blower 5 includes a blower 42 provided outside the housing 2 and a blower duct 15 for supplying outside air A blown from the blower 42 into the exhaust processing chamber 2s. The air volume of the blower 42 can be varied by a built-in inverter function unit. On the other hand, this air duct 15
Is closed at its tip, has a large number of air holes 16 on the peripheral surface, and is formed in the horizontal direction so as to be arranged substantially at the center of the exhaust processing chamber 2s.

The exhaust duct 6 has an inlet 6s facing the inside of the exhaust processing chamber 2s located on the inner side of the inner wall, and the inlet 6s has an oblique cut shape to form the exhaust processing chamber 2s.
Consideration is made so that the residence time of the exhaust gas G in s is uniform. Further, the exhaust duct 6 is provided with a temperature sensor 17 for detecting a combustion temperature. In this case, although the temperature sensor 17 detects the exhaust temperature in the exhaust duct 6, the exhaust temperature is substantially proportional to the combustion temperature of the waste liquid L, and therefore the combustion temperature is indirectly detected.

On the other hand, reference numeral 18 denotes a control unit.
The temperature sensor 17 is connected to the input side of 8 and the blowers 41 and 42 are connected to the output side. Control unit 18
Is based on the combustion temperature detected by the temperature sensor 17, based on the waste liquid combustion blower 4 and / or the exhaust treatment blower 5.
Air volume can be controlled.

Next, an operation including a method of using the waste liquid combustion apparatus 1 according to the present embodiment will be described with reference to the drawings.

First, various waste liquids L such as gear oil, refrigerating machine oil, hydraulic oil, quenching oil, cutting oil, and engine oil for automobiles collected from factories and automobiles are collected in the main tank 3.
9 and is supplied to a waste liquid tank 36 through a pipe 38. Thus, when the open / close valve 37 is operated to the open side, the waste liquid L in the waste liquid tank 36 is supplied to the waste liquid combustion chamber 2f through the waste liquid supply pipe 35.

Next, the waste liquid L in the waste liquid combustion chamber 2f is ignited by a fire source such as a lighter, and the blowers 41 and 4
By operating 2, the waste liquid L burns. In this case, if the liquid level of the waste liquid L in the waste liquid combustion chamber 2f decreases due to the combustion of the waste liquid L, the liquid level of the waste liquid L in the waste liquid tank 36 also decreases. If the liquid level of the waste liquid L rises,
The supply of the waste liquid L from the main tank 39 is stopped by the float switch 40. Therefore, the liquid level of the waste liquid L in the waste liquid tank 36 is always maintained at a certain prescribed level.
With such a principle, the liquid level of the waste liquid L in the waste liquid combustion chamber 2f can be adjusted by changing the installation height of the waste liquid tank 36. Further, the air is evenly blown from the main pipe portion 12 of the blower duct 11 into the waste liquid combustion chamber 2f, and further, the air is directly blown onto the waste liquid L from the branch pipe portions 14. Is promoted.

On the other hand, the exhaust gas G generated by the combustion of the waste liquid L in the waste liquid combustion chamber 2f enters the exhaust processing chamber 2s, and the exhaust gas G is processed in the exhaust processing chamber 2s. That is, the exhaust gas G that has entered the exhaust processing chamber 2s is completely burned by the outside air A supplied from the exhaust processing blower 5,
Thereafter, the gas is discharged into the atmosphere through the exhaust duct 6. In this case, the structure of the exhaust processing blower 5 causes the exhaust processing chamber 2
s, the outside air A is supplied evenly, and the housing part 2 is made horizontally long so that the flow of the exhaust gas G is made horizontal. Further, the exhaust processing chamber 2 s and the exhaust processing
And the geometric structure and layout of the exhaust duct 6,
So-called heat circulation becomes better. Since the inside of the exhaust processing chamber 2s during combustion is usually heated to about 850 ° C., the exhaust processing chamber 2s is completely heated by a high temperature environment, sufficient supply of outside air A, and a sufficient processing time (residence time). Burning is promoted, and harmful substances such as smoke and dioxin are reduced.

The air volume of the blowers 41 and / or 42 may be kept constant, but may be variably controlled by the control unit 18. That is, during combustion, the combustion temperature is detected from the temperature sensor 17 and is provided to the control unit 18. Therefore, the control unit 18 monitors the combustion temperature, and increases the air volume by lowering the combustion temperature or increases the combustion temperature. Thus, control for reducing the air volume can be performed.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment,
It is possible to arbitrarily change, add, or delete details, configurations, shapes, methods, numerical values, and the like without departing from the gist of the present invention. For example, while the embodiment illustrates a waste liquid stove,
It can be used for various heat sources such as waste liquid boilers and waste liquid burners. In the case of a waste liquid boiler, as shown in FIG. 1, a heat exchanger 44 through which water flows may be provided inside the exhaust processing chamber 2s.

[0026]

As described above, the waste liquid combustion apparatus according to the present invention has a housing in which a waste liquid combustion chamber for burning waste liquid is provided in the first stage and an exhaust treatment chamber for processing exhaust gas generated by combustion of waste liquid is provided in the second stage. Unit, a waste liquid supply unit that supplies waste liquid to the waste liquid combustion chamber, a waste liquid combustion blow unit that blows outside air to the waste liquid combustion chamber, an exhaust processing blow unit that blows outside air to the exhaust processing chamber, and an exhaust processing chamber. In order to have an exhaust duct that faces, by completely burning the exhaust that has entered the exhaust processing chamber,
It has a remarkable effect of suppressing generation of smoke and emission of harmful substances such as dioxin, and thus can contribute to prevention of air pollution and environmental protection.

[Brief description of the drawings]

FIG. 1 is a waste liquid stove (a waste liquid combustion device) according to the present embodiment.
Front view,

FIG. 2 is a sectional side view of a waste liquid combustion chamber of the waste liquid stove;

FIG. 3 is an overall external view of the waste liquid stove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waste liquid combustion apparatus 1s Waste liquid stove 2 Housing part 2f Waste liquid combustion chamber 2s Exhaust processing chamber 3 Waste liquid supply part 4 Waste liquid combustion ventilation section 5 Exhaust processing ventilation section 6 Exhaust duct 11 Ventilation duct 12 Main pipe section 13 ... Air hole 14 ... Branch pipe part 15 Air duct 16 ... Air hole 17 Temperature sensor 18 Control part L Waste liquid G Exhaust A Outside air

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F23G 5/50 ZAB F23G 5/50 ZABH

Claims (6)

[Claims] 1. A waste liquid combustion apparatus for burning waste liquid, comprising: a housing part provided with a waste liquid combustion chamber for burning waste liquid in a preceding stage, and an exhaust treatment chamber for treating exhaust gas generated by burning the waste liquid in a latter part. A waste liquid supply unit that supplies waste liquid to the waste liquid combustion chamber, a waste liquid combustion air supply unit that blows outside air to the waste liquid combustion chamber, an exhaust air blowing unit that blows outside air to the exhaust processing chamber, and the exhaust processing. A waste liquid combustion device comprising an exhaust duct facing a chamber. 2. The apparatus according to claim 1, wherein the housing portion is configured to be horizontally long, and a part of an intermediate portion is partitioned to provide a waste liquid combustion chamber on one side in the horizontal direction and an exhaust treatment chamber on the other side in the horizontal direction. The waste liquid combustion device according to claim 1, wherein 3. The waste liquid combustion blowing section includes a vertically long main pipe section having a large number of air holes on a peripheral surface thereof, and a plurality of branch pipes branching from a lower end peripheral surface of the main pipe section and blowing air to the waste liquid surface. 2. The waste liquid combustion apparatus according to claim 1, further comprising an air duct including a thin branch pipe. 4. The waste liquid combustion apparatus according to claim 1, wherein the exhaust processing air blowing unit includes a horizontally long air blowing duct having a large number of air holes on a peripheral surface. 5. A control unit for detecting a combustion temperature by a temperature sensor and controlling an air volume of the waste liquid combustion blowing unit and / or the exhaust processing blowing unit based on the combustion temperature. 2. The waste liquid combustion device according to 1. 6. The waste liquid combustion apparatus according to claim 1, wherein the waste liquid combustion apparatus comprises a waste liquid stove.