JP2006250478A - Waste oil combustion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste oil combustion device for efficiently burning waste oil having a high fire point to be rendered harmless while suppressing the incomplete combustion. <P>SOLUTION: A wick case 51 is arranged on a bottom face 10b of a combustion furnace 10. In the wick case 51, a wick 52 is placed which is formed of glass fibers or porous ceramics. The waste oil supplied from a waste oil supply device 20 is dropped onto the wick case 51 to permeate into the wick 52. A blower 30 blows air to the wick 52 into which the waste oil permeates for complete combustion. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waste oil combustion apparatus that performs combustion treatment of waste oil made of animals and plants used at the time of food production.

  Conventionally, waste oil generated from the food industry and the like has been widely used as an energy source for power plants after refining the waste oil. When refining such waste oil for reuse, the reclaimed oil that has been refined from waste oil is separated by separating it into reclaimed oil that has been filtered for impurities and waste oil that has a lot of impurities remaining. Although it is possible to recycle at other places, the remaining waste oil with a lot of other impurities contains a lot of impurities, and it is difficult to recycle at present. The method to be taken is taken. As a method for incineration of such waste oil, for example, Patent Document 1 supplies an air flow in which animal and vegetable oil is taken into combustion cattails in order to completely burn animal and vegetable oil whose ignition point has been increased due to alteration or contamination of impurities. An animal and vegetable oil combustion method and an animal and vegetable oil combustion apparatus are disclosed in which complete combustion is achieved by feeding as a high-speed swirling flow from a nozzle of a pipe, allowing it to stay in combustion combustion for a relatively long time, and passing it through a catalyst body. Patent Document 2 discloses that in the leachate treatment facility at the final waste disposal site, the leachate stored in the leachate storage tank is pumped up by a pump and sprayed in the form of a mist from the spray nozzle to the flame of the burner. Disclosed are those that incinerate hazardous substances. Patent Document 3 proposes a device that accelerates combustion by blowing air to waste oil such as automobile engine oil.

Japanese Patent Application Laid-Open No. 11-94229 Japanese Patent Laid-Open No. 5-26427 JP-A-10-185142

  However, in Patent Document 1, since the animal and vegetable waste oil mixed with impurities is sprayed from the nozzle in a state mixed with high-pressure air, there is a concern that the nozzle may be clogged due to the contamination of the animal and vegetable waste oil, Also in Patent Document 2, since the leachate is sprayed from the spray nozzle, the spray nozzle may be clogged in the same manner. Moreover, in patent document 3, since the method of injecting and igniting a flame with respect to the waste oil collected in the combustion groove is taken, it takes time to ignite the waste oil having a relatively high flash point. Ignition is not good. Moreover, since the waste oil used as a lubricant such as engine oil is burned, for example, when waste oil mixed with metal powder as a mixture of waste oil due to sliding wear of metal parts inside the engine is burned and incinerated, The powder is also burned, and there is a concern that harmful substances are generated by the burning of the metal powder.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a waste oil combustion apparatus that can suppress incomplete combustion of waste oil having a high ignition point and can be efficiently burned to make it harmless. And

  A waste oil combustion apparatus according to claim 1 of the present invention is a waste oil combustion apparatus for combusting waste oil supplied into a combustion furnace, comprising a fire tray provided in the combustion furnace, and a waste oil supply for supplying the waste oil to the fire tray. An apparatus, a fibrous wick that is permeated with waste oil dropped on the pan, and a blower that supplies air to the wick that has been infiltrated with the waste oil. While supplying while dripping to the said baking tray, it blows on the said core with the said air blower, It is made to burn.

  According to the structure of claim 1, when the waste oil is dropped onto the fire pan in the combustion furnace by the waste oil supply device, it penetrates into the fibrous core having a space layer by capillary action, and air is blown into the core into which the waste oil has been permeated. Since it is supplied by spraying, even waste oil having a relatively high ignition point can be combusted efficiently. Furthermore, since the waste oil is dropped and supplied to the pan, spraying the waste oil containing impurities from the nozzle as in the past can prevent the nozzle from becoming clogged and malfunctioning.

  The waste oil combustion apparatus according to claim 2 of the present invention is characterized in that, in the waste oil combustion apparatus according to claim 1, the material of the fibrous core is glass fiber.

  According to the structure of claim 2, the glass fiber has heat resistance and can be used as a cocoon core because the waste oil of the fire tray is permeated.

  The waste oil combustion apparatus according to claim 3 of the present invention is the waste oil combustion apparatus according to claim 1, characterized in that the core is made porous instead of fibrous.

  According to the configuration of claim 3, when waste oil is dropped onto the fire pan in the combustion furnace by the waste oil supply device, it penetrates into the porous core through capillary action, and air is blown into the porous core through which the waste oil penetrates. Since it is supplied by spraying, even waste oil having a relatively high ignition point can be combusted efficiently. Furthermore, since the waste oil is dropped and supplied to the pan, spraying the waste oil containing impurities from the nozzle as in the past can prevent the nozzle from becoming clogged and malfunctioning.

  A waste oil combustion apparatus according to a fourth aspect of the present invention is the waste oil combustion apparatus according to the third aspect, wherein the material of the porous core is ceramics.

  According to the structure of claim 4, the ceramic has heat resistance, and by using the porous ceramic as the core, the waste oil of the fire tray is permeated into the core due to the capillary phenomenon and burned.

  A waste oil combustion apparatus according to a fifth aspect of the present invention is the waste oil combustion apparatus according to any one of the first to fourth aspects, wherein a metal body such as a roasted ball is provided in the combustion furnace.

  According to the fifth aspect of the present invention, the metal body becomes high temperature due to the combustion heat of the core through which the waste oil has permeated, so that the temperature in the combustion furnace can be kept high by the radiant heat of the metal body.

  According to the waste oil combustion apparatus of claim 1 of the present invention, the waste oil combustion apparatus burns the waste oil supplied into the combustion furnace, and supplies the waste oil to the fire pan provided in the combustion furnace. A waste oil supply device, a fibrous core that is infiltrated with the waste oil dripped onto the pan, and a blower that supplies air to the core into which the waste oil is infiltrated, and when the core infiltrated with the waste oil is burned, The waste oil is supplied while dripping into the fire pan, and is blown by blowing air to the core with the blower. Even if the waste oil contains impurities, the core is more effective without causing incomplete combustion. It is possible to suppress the emission of harmful substances due to combustion of waste oil. Furthermore, since it is not the complicated structure which sprays and supplies waste oil with a nozzle, the waste oil combustion apparatus which reduced the failure can be provided.

  According to the waste oil combustion apparatus of claim 2 of the present invention, in the description of claim 1, since the material of the fibrous core is glass fiber, it is possible to use asbestos that has a large adverse effect on the human body as in the past. Waste oil can penetrate into the wick and burn.

  According to the waste oil combustion device of claim 3 of the present invention, in the description of claim 1, since the core is made porous instead of fibrous, even in the case of waste oil containing impurities, incomplete combustion or the like is performed. It is possible to effectively burn the wick without causing it, and to suppress the emission of harmful substances accompanying the combustion of waste oil. Furthermore, since it is not the complicated structure which sprays and supplies waste oil with a nozzle, the waste oil combustion apparatus which reduced the failure can be provided.

  According to the waste oil combustion apparatus of claim 4 of the present invention, in the description of claim 3, since the material of the porous core is ceramics, the waste oil of the fire tray can penetrate into the core and burn, Ceramics is superior in fire resistance and heat resistance to glass fiber, so that it is possible to operate a waste oil combustion apparatus without exchanging the core for a long time.

  According to the waste oil combustion apparatus of claim 5 of the present invention, in the description of any one of claims 1 to 4, since the metal body such as the roasted ball is provided in the combustion furnace, it is burned by the radiant heat of the metal body The high temperature state in the furnace can be kept stable and combustion of waste oil can be promoted.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to FIGS. Needless to say, the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the invention.

  1 is a front view showing a combustion furnace of a waste oil combustion apparatus showing an example of the present invention, FIG. 2 is a sectional view showing the waste oil combustion apparatus as viewed from the side, and FIG. 3 is a partially broken waste oil combustion apparatus. FIG.

  As shown in FIGS. 1 to 3, the waste oil combustion apparatus 1 burns waste oil such as animal and vegetable oil supplied into the combustion furnace 10 to make it harmless, and the overall shape of the combustion furnace 10 is a substantially box shape. The refractory bricks are provided almost entirely on the inner wall surface 10a of the combustion furnace 10. In addition, a pair of opening / closing doors 11 having an opening 11a below the opening 11a is provided on the front surface of the combustion furnace 10 so as to be freely openable and closable. An exhaust port 12 for discharging the combustion gas obtained by burning the waste oil in 10 is provided.

  On the bottom surface 10 b of the combustion furnace 10, there are provided a metal body 53 called a so-called roasted ball that is heated as the temperature in the combustion furnace 10 rises, and a fire tray 51 as a cast iron saucer. A core 52 to be described later is placed.

  Further, on the open / close door 11 side of the combustion furnace 10, a waste oil supply device 20 having two supply pipes 21 for supplying waste oil to a fire pan 51 on which the core 52 is placed is arranged in parallel, and the difference in specific gravity, etc. It is possible to simultaneously supply waste oils having different properties, that is, although not shown, the waste oil is supplied from the supply pipe 21 having an inner diameter of approximately 5 mm to the fire tray 51 by driving a pump provided in the waste oil supply device 20. It is designed to be supplied dropwise. The supply pipe 21 of the waste oil supply device 20 is provided with an electromagnetic valve 22 and a flow rate adjusting valve 23 for opening and closing the flow path of the waste oil supplied from the pump, and supplied from the two systems of waste oil supply devices 20. The amount of waste oil supplied can be adjusted freely.

  Reference numeral 30 denotes a blower that forcibly blows air to the core 52. The sending machine 30 includes a blower fan that blows air by rotating the motor 31 and is connected to one end of the main body of the sending machine 30. Air is blown out from the cylindrical blower duct 33 toward the core 52, and oxygen is forcibly supplied when the core 52 in the waste oil on the pan 51 is burned. In addition, since the waste oil contains impurities, its ignition point is relatively high. However, the waste oil is infiltrated into the core 52 and has a fibrous glass fiber having an air layer inside, or porous. It can be ignited by directly blowing the flame 52 ignited by high voltage sparks by the ignition device 60 and blowing out from the burner device 62 to the core 52 made of quality ceramics or the like until the flame is stabilized. The burner device 62 can freely adjust the size of the flame by the gas amount adjusting valve 61 and the electromagnetic valve 63.

  Next, the effect | action which concerns on the said structure is demonstrated below. When the waste oil is dripped from the supply pipe 21 of the waste oil supply apparatus 20 to the fire tray 51, the waste oil is sucked up by the capillary phenomenon made of glass fiber having an air layer therein or porous ceramics by capillary action. As a result, the waste oil penetrates the core 52. The burner device 60 directly ignites the core 52 infiltrated with waste oil by directly blowing a flame as an ignition source onto the core 52, and then extinguishes the flame of the burner device 60 by the gas amount control valve 61. The wick core 52 infiltrated with the waste oil is rapidly heated by a high-temperature flame blown from the burner device 60, and the vaporization of the waste oil that has penetrated the wick core 52 is promoted. Due to the decrease in the viscosity, the waste oil penetrates efficiently into the core 52. In this state, the blower 30 blows air toward the core 52 and the flame through which the waste oil has permeated, and the waste oil is continuously dropped onto the pan 51. Here, the flame generated from the core 52 is completely burned by supplying a large amount of air blown by the blower 30.

  In addition, a metal body 53 called a so-called roasted ball is disposed in the combustion furnace 10, and the metal body 53 is heated by the high temperature of the combustion furnace 10 due to burning of the core, and is burned by storing heat. The temperature in the furnace 10 can be kept high. That is, for example, even if the combustion of the core 52 becomes unstable due to the high temperature stored in the metal body 53, the waste oil evaporated from the core 52 into the combustion furnace 10 exceeds the ignition point of the waste oil by the metal body 53. By raising the temperature, it is possible to reduce the situation in which the combustion of the waste oil becomes unstable and maintain stable combustion. And the combustion gas which waste oil combusted is finally discharged | emitted out of the apparatus from the discharge port 12 of the combustion furnace 10. FIG.

  As described above, the waste oil combustion apparatus 1 includes the cast iron fire tray 51 in the combustion furnace 10. The waste oil is supplied to the fire tray 51 from the waste oil supply apparatus 20, and the waste oil dropped on the fire tray 51 is caused by capillary action. When the core is infiltrated, air is supplied from the blower 30 to the core 52, and when the core 52 in which the waste oil penetrates is burned, the waste oil is supplied while dripping onto the fire pan 51 and a large amount of air is supplied to the core 52 by the blower 30. The waste oil is burned and burned, and the waste oil is effectively burned by the wick 52 without causing incomplete combustion and the like, and it is possible to suppress discharge of harmful substances accompanying the combustion of the waste oil. Further, the supply pipe 21 is configured to drop from the supply pipe 21 having an inner diameter of 5 mm to 10 mm or less, and in fact, 5 mm, and sprayed after pressurizing the waste oil with a fine nozzle. Therefore, the cost can be reduced at a low cost, and troubles such as nozzle clogging can be avoided and the waste oil can be supplied stably.

  Further, since the material of the wick 52 is made of heat-resistant glass fiber, it can be burned while penetrating waste oil into the wick 52 without using asbestos, which has a large adverse effect on the human body as in the prior art. Moreover, since the core 52 is made of porous ceramics, the waste oil of the fire pan 51 can be permeated into the core 52 and burned, and ceramics are more excellent in heat storage, fire resistance, and heat resistance than glass fiber. The stability of combustion in the combustion furnace 10 is improved by the heat storage property, and the waste oil combustion apparatus 1 can be operated without performing maintenance work for a long time.

  Furthermore, when the waste oil dropped on the pan 51 is sucked into the glass fiber core 52 or the porous ceramic core 52 by capillary action, impurities having a high specific gravity, such as solid substances contained in the waste oil, When the waste oil penetrates into the core, it is separated by the entanglement of fine glass fibers and the porous fine pores of the ceramic and stays at the bottom of the pan 51, which is harmful by burning such impurities during the combustion of the waste oil. It becomes possible to suppress the generation of substances. Therefore, the waste oil combustion apparatus 1 in the present embodiment has means for easily separating impurities contained in the waste oil without using a filtration device or the like, and after separating solids or the like as impurities of about 4 mm or less. Can be burned.

  Further, since the metal body 53 such as a roasted ball is provided in the combustion furnace 10, stable combustion is maintained by the metal body 53 stored at a high temperature exceeding the ignition point of the waste oil, and the combustion furnace is radiated by the radiant heat of the metal body 53. The high temperature state in 10 can be stably maintained.

  Next, the waste oil combustion apparatus according to the second embodiment will be described below. In this embodiment, FIG. 4 is a front view showing a cross section of the combustion furnace, FIG. 5 is a cross sectional view showing the waste oil combustion device viewed from the side, and FIG. 6 is a plan view showing the waste oil combustion device with a part cut away. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The waste oil combustion apparatus 1 is similar in basic configuration to the waste oil combustion apparatus 1 in the first embodiment described above, but the core 52 placed on the pan 51 is hemispherical in cross section and has a plurality of holes. It is set as the structure covered with the covering body 54 which formed 54a. Further, an exhaust fan 70 is connected to the discharge port 12 for discharging the combustion gas, and the exhaust gas blower 70 forcibly discharges the combustion gas in the combustion furnace 10.

  The waste oil combustion apparatus 1 according to the second embodiment is similar to the first embodiment in that the waste oil that has penetrated into the core is blown by the blower 30 and burned, but the covering body 54 has innumerable holes 54a formed therein. A stainless steel plate is formed in a semi-spherical cross section, and the space part inside the covering 54 that covers the core becomes the primary combustion chamber S1 in which the waste oil that has penetrated the core 52 is vaporized and burned. By providing the primary combustion chamber S1, the waste oil and the air blown by the blower 30 are combusted while being appropriately mixed in the primary combustion chamber S1 of the covering body 54, and then burned from the hole 54a to the covering body 54. The secondary combustion is induced by being guided to the secondary combustion chamber S2 as a space part in the outer combustion furnace 10, and the detoxification of the combustion gas can be improved.

  Further, since air is forcibly exhausted from the blowout port 73 of the exhaust fan 70 provided in the exhaust port 12 to the upper side of the combustion furnace 10 in the discharge direction, the air is supplied by the blower 30. Since the inflow amount of air sucked in can be increased, it is possible to further improve the combustion efficiency of waste oil which is considered difficult to burn.

  Furthermore, by sending air from the exhaust fan 70 to the exhaust port 12, the exhaust temperature of the combustion gas discharged from the exhaust port 12 is mixed with air to be lowered, and the thermal energy of the discharged combustion gas is reused. At that time, the temperature can be lowered to a desired temperature and used, so that the use of discharged heat energy can be expanded.

  As described above, the embodiment of the present invention has been described in detail. However, the embodiment is not limited to the above embodiment. For example, the material of the core 52 is not limited to glass fiber or porous ceramics, and has heat resistance and the like. Any material capable of penetrating the dropped waste oil may be used, and various modifications may be made within the scope of the present invention, such as using a metal material or an inorganic material.

1 is a front view showing a combustion furnace of a waste oil combustion device in Embodiment 1. FIG. It is sectional drawing which shows the state which looked at the waste oil combustion apparatus from the side same as the above. It is a top view which shows the waste oil combustion apparatus which notched a part same as the above. 6 is a front view showing a cross section of a combustion furnace in Example 2. FIG. It is sectional drawing which shows the state which looked at the waste oil combustion apparatus from the side same as the above. It is a top view which shows the waste oil combustion apparatus which notched a part same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste oil combustion apparatus 10 Combustion furnace 20 Waste oil supply apparatus 30 Blower 51 Fire tray 52 Core 53 Metal body

Claims (5)

  A waste oil combustion apparatus for combusting waste oil supplied into a combustion furnace, comprising a fire tray provided in the combustion furnace, a waste oil supply apparatus for supplying the waste oil to the fire dish, and waste oil dropped onto the fire tray And a blower for supplying air to the core into which the waste oil has been infiltrated, and supplying the waste oil while dropping the fire oil onto the fire tray when the core infiltrated with the waste oil is supplied. A waste oil combustion apparatus characterized in that air is blown onto the core to burn it.   The waste oil combustion apparatus according to claim 1, wherein the fibrous core is made of glass fiber.   The waste oil combustion apparatus according to claim 1, wherein the core is made porous instead of fiber.   The waste oil combustion apparatus according to claim 3, wherein a material of the porous core is ceramics. The waste oil combustion apparatus according to any one of claims 1 to 4, wherein a metal body such as a roasted ball is provided in the combustion furnace.

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