JP2008188522A - Oil mist removal apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for removing oil mist in air which is enabled to keep the function for a long duration. <P>SOLUTION: As shown in Fig.1, a filter 1 which is divided into an adsorption part 9 and a regeneration part 10 as shown in Fig.2 by a duct 4 is rotated in the direction shown by the arrow in Fig.2 by rotating means 3 such as a motor. Air containing oil mist is passed through the adsorption part 9 of the filter 1 as shown with the arrow 5 by blowing means such as a fan and purified by adsorbing the oil mist with the filter 1 and then discharged as shown with the arrow 7. Further, the regeneration part 10 of the filter 1 is regenerated by burning and decomposing the adsorbed oil mist by heating with heating means 2. The waste gas emitted by burning the oil mist is discharged as shown with the arrows 6 and 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an oil mist removing apparatus that removes oil mist contained in exhaust gas.

  Conventionally, this type of oil mist removing device uses a low pressure loss catalyst and always heats it above the activation temperature range to forcibly bring the oil mist in the air into contact with the catalyst body so that the oil mist in the air It is known to remove.

  Hereinafter, the oil mist removing apparatus will be described with reference to FIG.

As shown in FIG. 9, an oil mist removing apparatus in which a heating element 104 and a suction fan 105 are provided in a path 103 having an oil smoke inlet 101 and a purified exhaust outlet 102, and a catalyst body 106 is disposed therebetween. It is. The oil smoke passes through the oil mist removing apparatus as shown by the arrows in FIG. The oil smoke forced to flow in from the inlet 101 by the suction fan 105 is heated by the heater 104 and further purified through oxidative decomposition while passing through the heated catalyst body 106 (see Patent Document 1). ).
JP-A-9-271636

  Such a conventional oil mist removing device is required to maintain performance over a long period of time. However, since the removed oil mist accumulates, periodic maintenance such as replacement of the filter or washing is required. In addition, there is a catalyst that constantly decomposes using a catalyst, but the energy consumption is large because it is always heated and used in the activation region. In addition, waste such as cleaning fluid containing oil and filters is generated during maintenance, causing environmental pollution.

  The present invention solves such a conventional problem, and reliably removes oil mist in the gas and sequentially decomposes and regenerates part of the filter automatically, thereby maintaining no maintenance over a long period of time and saving energy. It is an object to provide an oil mist removing device capable of maintaining the performance at the above.

  Moreover, it aims at providing the oil mist removal apparatus which can remove oil mist by decomposing | disassembling the removed oil, without taking out a waste liquid and waste.

  In order to achieve the above object, the oil mist removing apparatus of the present invention has a ceramic filter that absorbs cylindrical or disc-shaped oil, a heating unit that heats a part of the ceramic filter, and a rotating unit that rotates the filter. A portion other than the portion heated by the heating means of the ceramic filter as an adsorbing portion, allowing the contaminated air to pass therethrough and adsorbing and removing oil mist in the contaminated air, and regenerating the portion heated by the heating means of the ceramic filter The oil mist adsorbed as is decomposed by heating by a heating means, the ceramic filter is rotated by the rotating means, the oil mist adsorbed by the adsorption portion is sequentially decomposed by the regenerating portion, and the ceramic filter is regenerated. It is a thing.

  By this means, oil mist in the air passing through the adsorption part of the ceramic filter can be surely removed, and an oil mist removing device that can automatically regenerate the filter is obtained because it is successively decomposed by the regeneration part.

  Another means is that the ceramic filter has a honeycomb structure.

  Another means is that the ceramic filter is made of porous ceramic.

  Another means is that a catalyst material that decomposes oil mist by heat is added to a ceramic filter.

  Another means is that the heating means is a heater, and the reproducing section is heated by warm air that has passed through the heater.

  Another means is that the heating means generates infrared rays and heats the reproducing unit by radiation.

  Another means is to add a magnetic material to the ceramic filter, use electromagnetic induction as the heating means, and heat by induction heating.

  The other means is provided with a temperature sensor for measuring the temperature of the regenerative unit, and provided with an abnormal stop means for detecting an abnormality by a signal from the temperature sensor and stopping the heating means.

  The other means is provided with combustion air supply means for supplying air to the regeneration unit.

  The other means is provided with a regenerated exhaust gas purifying means for purifying the exhaust gas after passing through the regenerating section.

  According to the present invention, oil mist in the air is surely removed by a ceramic filter that absorbs oil, and the oil that has been removed automatically and sequentially by the regeneration unit is regenerated and the filter is regenerated. Thus, it is possible to provide an oil mist removing device capable of maintaining the performance.

  Further, by decomposing the removed oil, it is possible to provide an oil mist removing device that can remove the oil mist without discharging waste liquid or waste.

  The invention according to claim 1 comprises a ceramic filter that absorbs cylindrical or disk-like oil, a heating means for heating a part of the ceramic filter, and a rotating means for rotating the filter. The oil mist adsorbed by removing the oil mist in the contaminated air by adsorbing and removing the contaminated air through the adsorbing portion other than the portion heated by the heating means of the filter manufactured by the filter, An oil mist removing device, wherein the oil mist is decomposed by heating by a heating means, the ceramic filter is rotated by the rotating means, and the oil mist adsorbed by the adsorption section is sequentially decomposed by the regeneration section, and the ceramic filter is regenerated. The oil mist in the air is removed by the adsorption part of the ceramic filter. By rotating the filter with wearing and removing, by heating decomposed oil mist adsorbed in a sequential reproduction unit has the effect of regenerating the filter.

  The invention according to claim 2 of the present invention is characterized in that the ceramic filter has a honeycomb structure, and has an action capable of sending air with a low pressure loss.

  According to the third aspect of the present invention, the ceramic filter is made of porous ceramic, and the porous structure increases the chance of contact between the air and the filter, and has an effect of reliably removing oil mist.

  The invention according to claim 4 of the present invention is characterized in that a catalyst material that decomposes oil mist by heat is added to a ceramic filter, and the oil mist is decomposed at a lower temperature by using a catalyst. Has the effect of

  The invention according to claim 5 of the present invention is characterized in that the heating means is a heater, and the regeneration section is heated by warm air that has passed through the heater, so that heat and oxygen necessary for regeneration can be supplied simultaneously. Have

  The invention according to claim 6 of the present invention is characterized in that the heating means generates infrared rays and the reproducing part is heated by radiation, and the reproducing part can be directly heated by radiant heat. Have

  The invention according to claim 7 is characterized in that a magnetic material is added to a ceramic filter, electromagnetic induction is used as a heating means, and heating is performed by induction heating. It has the effect | action that it can heat uniformly to the inside of a filter made from.

  The invention according to claim 8 of the present invention is provided with a temperature sensor for measuring the temperature of the regenerating part, and provided with an abnormal stopping means for detecting an abnormality by a signal of the temperature sensor and stopping the heating means. By detecting abnormal temperature rise due to heating and decomposition of oil mist and stopping heating, the device can be operated safely.

  The invention according to claim 9 of the present invention is provided with combustion air supply means for supplying air to the regeneration unit, and supplies oxygen necessary for thermal decomposition of the oil mist by supplying air to the regeneration unit. It has the action.

  The invention according to claim 10 of the present invention is provided with regenerated exhaust gas purification means for purifying exhaust gas after passing through the regenerating part, and gas generated without being completely decomposed into carbon dioxide and water in the regenerating part. It has the effect of suppressing discharge to the outside.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram showing the configuration of the oil mist removing apparatus of the present invention. FIG. 2 is a view showing a filter of the oil mist removing apparatus of the present invention.

  As shown in FIG. 1, the filter 1 is divided into a suction part 9 and a regeneration part 10 by a duct 4 as shown in FIG. 2, and is rotated in the direction of the arrow shown in FIG.

  The air containing the oil mist passes through the adsorbing portion 9 of the filter 1 as indicated by an arrow 5 using a blowing means such as a fan, is adsorbed to the filter 1 and purified, and is discharged as indicated by an arrow 7. The

  Here, the filter 1 is a cylinder or a disk and is made of a material mainly composed of a porous ceramic. The filter 1 allows air to pass through and captures and adsorbs oil mist in the air. Various filters such as alumina and silica are used. Materials can be used.

  The regenerator 10 of the filter 1 is regenerated by burning and decomposing oil mist heated and adsorbed by the heating means 2 with heat. The exhaust gas combusted with oil mist is discharged as shown by arrows 6 and 8.

  In the above configuration, the filter 1 adsorbs and removes oil mist in the air at the adsorbing portion 9. At the same time, the oil mist rotated by the rotating means 3 and adsorbed by passing through the regeneration unit 10 can be regenerated by combustion decomposition.

  By repeating this operation, it is possible to prevent a reduction in the removal performance due to the accumulation of oil mist on the filter 1 and to heat only part of the filter 1 as the regenerating unit 10, so that it is operated with energy saving. It becomes possible.

  Here, the heating means 2 may not only use a heating device that uses hot air using a nichrome wire or a PTC heater, but may directly heat the regenerator 10 of the filter 1 using infrared rays such as a halogen lamp.

(Embodiment 2)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 3 is a schematic diagram showing the structure of the filter 1 of the oil mist removing apparatus of the present invention. As shown in FIG. 3, the filter 1 has a honeycomb structure, captures and adsorbs oil mist in the air, and various materials such as alumina and silica can be used.

  In the above configuration, it is possible to reduce the resistance when air passes through the filter 1, that is, the pressure loss. Therefore, it is possible to provide a low-noise and small-sized oil mist removing device.

(Embodiment 3)
The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 4 is a block diagram showing the configuration of the oil mist removing apparatus of the present invention.

  In FIG. 4, the catalyst addition filter 11 is a cylinder or a disk and is added with a thermal catalyst that decomposes oil mist adsorbed on a material mainly composed of porous ceramics.

  In the above configuration, the oil mist adsorbed on the catalyst addition filter 11 is regenerated by decomposing the oil mist adsorbed by the thermal catalyst activated by the heating means 2.

  By adding a thermal catalyst, it is possible to regenerate at a lower temperature and to remove oil mist in the air with more energy saving.

  Here, as the thermal catalyst, various catalysts such as noble metal and metal oxide can be used as long as they can decompose the adsorbed oil mist. Platinum, palladium, etc. are common.

(Embodiment 4)
The same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 5 is a block diagram showing the configuration of the oil mist removing apparatus of the present invention.

  In FIG. 5, the magnetic material addition filter 12 is a cylinder or disk-shaped material in which a magnetic material is added to a material mainly composed of porous ceramics. The induction heating means 13 can generate electromagnetic induction by a high frequency current, and a coil or the like is used.

  In the above configuration, the regeneration unit 10 heats the magnetic material added to the magnetic material addition filter 12 by electromagnetic induction generated by the induction heating means 13, and as a result, the regeneration unit 10 of the magnetic material addition filter 12 can be heated. It becomes possible to decompose the adsorbed oil mist.

  Since the magnetic material addition filter 12 can be directly heated by electromagnetic induction, it is possible to provide an oil mist removing device that can be operated with less energy loss and less energy loss.

(Embodiment 5)
The same parts as those in the first to fourth embodiments are denoted by the same reference numerals and detailed description thereof is omitted. FIG. 6 is a block diagram showing the configuration of the oil mist removing apparatus of the present invention.

  As shown in FIG. 6, the temperature sensor 14 is installed between the heating means 2 and the filter 1, and measures the temperature of the regeneration unit 10 of the filter 1. Here, as the temperature sensor 14, any thermocouple, thermistor, platinum temperature sensor, or the like that can be measured at the temperature to be used can be used.

  In the above configuration, the operation is determined to be that abnormal combustion has occurred when the temperature measured by the temperature sensor 14 becomes higher than the set temperature, that is, the temperature at which normal oil mist is combusted, and heating by the heating means 2 is stopped.

  As described above, by detecting an abnormal temperature rise and stopping heating by the heating means 2, it is possible to suppress heat generation due to self-combustion of the oil mist, and to provide a safer oil mist removing device. Is possible.

(Embodiment 6)
The same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. FIG.

  As shown in FIG. 7, the blowing means 15 is connected to the arrow 6 side of the duct 4, blows air to the regeneration unit 10 of the filter 1, and supplies oxygen necessary for the combustion of oil mist.

  In the above-described configuration, oxygen necessary and sufficient for the oil mist to burn is supplied to the regeneration unit 10 of the filter 1, so that complete decomposition combustion is possible and residue can be prevented from remaining.

  Therefore, it is possible to provide an oil mist removing device that is more durable.

(Embodiment 7)
The same parts as those in the first to sixth embodiments are denoted by the same reference numerals and detailed description thereof is omitted. FIG. 8 is a block diagram showing the configuration of the oil mist removing apparatus of the present invention.

  As shown in FIG. 8, the regenerated exhaust gas purification means 16 is connected to the discharge side of the duct 4 and purifies the exhaust gas generated when the regenerating unit 10 burns oil mist.

  In the above configuration, when oil mist is burned, it is basically decomposed into CO2 and water, but there are cases where organic gas and pollutant gases such as carbon monoxide are discharged without being completely decomposed. The regenerated exhaust gas purification means 16 removes pollutant gas discharged with combustion of oil mist, and adsorbents such as activated carbon and zeolite, noble metal catalysts such as platinum and palladium, or metal oxides A catalyst or the like can be used.

  As described above, the regenerated exhaust gas purification means 16 can suppress the emission of pollutant gas accompanying the combustion of oil mist.

  It can be used to remove oil mist generated by cooking in industrial fields such as machining and household / store fields.

The block diagram which shows the structure of Embodiment 1 of this invention. Schematic diagram showing the filter configuration of the first embodiment of the present invention. Schematic diagram showing the filter structure of Embodiment 2 of the present invention The block diagram which shows the structure of Embodiment 3 of this invention. The block diagram which shows the structure of Embodiment 4 of this invention. The block diagram which shows the structure of Embodiment 5 of this invention. The block diagram which shows the structure of Embodiment 6 of this invention. The block diagram which shows the structure of Embodiment 7 of this invention Block diagram showing the configuration of a conventional oil mist removing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter 2 Heating means 3 Rotating means 9 Adsorption part 10 Regenerating part 11 Catalyst addition filter 12 Magnetic substance addition filter 13 Induction heating means 14 Temperature sensor 15 Blower means 16 Regenerated exhaust gas purification means

Claims (10)

A ceramic filter that absorbs cylindrical or disc-shaped oil, a heating means that heats a part of the ceramic filter, and a rotating means that rotates the filter, except for a portion that is heated by the heating means of the ceramic filter The adsorbed part allows contaminated air to pass through and removes the oil mist in the contaminated air by adsorption, decomposes the adsorbed oil mist by heating by the heating means using the heating part of the ceramic filter as the regenerating part, and the rotation An oil mist removing apparatus characterized in that a ceramic filter is rotated by means and oil mist adsorbed by an adsorption unit is sequentially decomposed by a regeneration unit to regenerate the ceramic filter. 2. The oil mist removing apparatus according to claim 1, wherein the ceramic filter has a honeycomb structure. The oil mist removing apparatus according to claim 1, wherein the ceramic filter is made of porous ceramic. 4. The oil mist removing apparatus according to claim 1, wherein a catalyst material that decomposes oil mist by heat is added to the ceramic filter. 5. The oil mist removing apparatus according to claim 1, wherein the heating means is a heater, and the regeneration unit is heated by warm air that has passed through the heater. 5. The oil mist removing apparatus according to claim 1, wherein the heating means generates infrared rays and heats the regeneration unit by radiation. 5. The oil mist removing apparatus according to claim 1, wherein a magnetic material is added to a ceramic filter, electromagnetic induction is used as a heating means, and heating is performed by induction heating. The temperature sensor which measures the temperature of a reproduction | regeneration part is provided, The abnormality stop means which detects abnormality by the signal of a temperature sensor, and stops a heating means is provided, Claim 1, 2, 3, 4, 5, 6 or 7 Oil mist removal device. 8. The oil mist removing apparatus according to claim 1, further comprising combustion air supply means for supplying air to the regeneration unit. The oil mist removing apparatus according to claim 8, further comprising a regenerated exhaust gas purifying means for purifying the exhaust gas after passing through the regenerating unit.

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