JP2006043498A - Washing/adsorption type deodorizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing/adsorption type deodorizer capable of preventing corrosion of and damage to a blower due to humidity and dust and enhancing the efficiency of deodorization in a cleaning tower and an adsorption/reaction tower. <P>SOLUTION: A temperature sensor 8 and a cooler 9 are disposed in an air bubble tank 3 communicating with a garbage disposer 1 so as to control the temperature of washing water 4 to <40°C with a control panel 10 based on a sensor signal. A pipe 6 is connected to a gas filling part 5 of an air bubble tank 3, the top end side of the pipe is connected to the bottom surface of the adsorption/reaction tower 7, and a suction fan 11 which sucks a filling gas and force-feeds the gas to the adsorption/reaction tower 7 is disposed in the middle between the air bubble tank 3 and the adsorption/reaction tower 7 in the pipe 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cleaning adsorption deodorizing apparatus that adsorbs and removes odor after cleaning odor gas.

  Conventionally, there are activated carbon adsorption type, aeration cleaning type, blower circulation type, catalytic combustion type, biological desorption type, etc. as an apparatus for eliminating odor in gas generated by garbage disposal etc. (for example, Patent Document 1 to Patent Document) 3). However, in the activated carbon adsorption system, the adsorption amount decreases as the temperature or humidity of the odor gas increases, and if the dust adheres to the activated carbon surface, the adsorption ability is not fully exhibited. Further, in the aeration cleaning method, when high temperature gas (40 to 70 ° C.) is continuously processed in a water tank in which cleaning water stays, the water temperature rises and once eluted odors are volatilized again, so that the deodorizing ability decreases. . Furthermore, in the air circulation system, particularly when corrosive (acid-based) humidity gas or high dust gas is processed, water droplets may accumulate in the blower and corrode, or may cause high load and electric leakage, In addition, dust also adheres to the blade portion of the blower, causing a reduction in performance and failure.

  In general, when each of the above three types is adopted singly, sufficient deodorizing ability cannot be obtained. In view of this, a part of the apparatus using the above method has been implemented. An example is shown in FIG. The schematic configuration of this apparatus is that an adsorption reaction tower 16, a connecting pipe 17 and a deodorizing tower 18 are provided on a deodorizing liquid tank 15, and an upper part of the deodorizing liquid tank 15 and the deodorizing tower 18 is connected by a circulation pipe 19. is doing. still. 20 is a drain, 21 is a perforated plate, 22 is a filler, and 23 is a circulation pump.

JP 2003-326133 A JP 2000-325738 A JP 2001-353419 A

  However, in this type of deodorizing apparatus, the temperature of fermentation of raw garbage is 50 to 60 ° C., so that the odor gas flowing into the adsorption reaction tower 16 and the deodorizing tower 18 is also high. The efficiency of the adsorption process and the cleaning process decreases. In both towers 16 and 18, it is generally necessary to increase the reaction volume and reaction contact area. In addition, when the humidity of the odor gas becomes higher than a predetermined value, deodorization is performed by diluting the deodorant or deodorant liquid. There was a problem that the effect was extremely reduced.

In general, there are the following three points to be noted in the development of a deodorizing apparatus.
(1) Prevent equipment damage due to odor gas humidity (acid-basic).
(2) The ability to blow odor gas can be constantly maintained above a certain value.
(3) The inside of the treatment tower should not be biased to either negative pressure or positive pressure.

In view of the above considerations, the inventor has intensively studied a deodorizing apparatus in which a cleaning tower such as a bubble tank for cleaning odor and an adsorption reaction tower for absorbing odor are connected in series. The most important thing to consider here is to prevent damage to equipment such as a blower without reducing the blowing capacity for odorous gas. For example, if moisture or dust in odor gas adheres to the blower, not only does the blower corrode or be damaged at an early stage, but it also causes a significant reduction in deodorization efficiency in a washing tower or the like.
The present invention has been made in view of the problems as described above, and its purpose is to prevent cleaning and adsorption deodorization capable of preventing corrosion and damage of equipment and improving deodorization efficiency in the cleaning unit and the adsorption unit. To provide an apparatus.

  For this reason, the cleaning adsorption deodorizing apparatus of the present invention is provided with a cleaning tower for cleaning and removing odorous components with cleaning water and a reaction tower for absorbing and removing odorous components with an adsorbent on the path through which the odorous gas passes. Between the tower and the adsorption reaction tower, a blower for sucking and blowing odor gas in the washing tower to the adsorption reaction tower side is provided.

  The cleaning adsorption deodorization apparatus of the present invention is provided with a blower for sending the odor gas in the cleaning tower to the adsorption reaction tower side between the cleaning tower through which the odor gas passes and the adsorption reaction tower. Corrosion and damage can be prevented, and at the same time, there is an excellent effect that the removal efficiency of water-soluble or particulate odor in the washing tower and the adsorption reaction tower can be greatly increased.

  In the basic configuration of the present invention, a cleaning tower and an adsorption reaction tower are provided in series along a gas flow direction in a path through which an odor gas passes. The washing tower is for removing odors with water, a hypochlorous acid aqueous solution or the like by a gas-liquid contact method. The adsorption reaction tower removes odors with an adsorbent such as activated carbon, silica gel, zeolite, or ion exchange resin. By providing a suction type blower between the adsorption reaction tower and the washing tower, the staying gas in the washing tower can be blown to the adsorption reaction tower side at a predetermined pressure.

  The washing tower is provided with a cooler, and the temperature of the wash water is controlled within the optimum range by this cooler. When the washing water is adjusted to a predetermined temperature or lower, not only can water and dust in the odor gas be washed away, but also the temperature of the odor gas can be lowered. Moreover, activated carbon is loaded in the adsorption reaction tower, and an exhaust port communicating with the atmosphere is formed in the upper part of the adsorption reaction tower.

  If the humidity and temperature of the gas are lowered below a predetermined value in the cleaning tower, the amount of adsorption by the adsorption reaction tower will increase significantly, and the dust adhesion to the adsorption surface will be drastically reduced and the adsorption capacity for odor will be greatly improved. . Further, in the washing tower of the present invention, since the washing water constantly flows, even when the hot gas (40 to 70 ° C.) is continuously processed in the washing tower, the water temperature is suppressed to a low temperature state of less than 40 ° C. and is once eluted. The odor component that has been removed does not volatilize again. Furthermore, even when a corrosive (acid-base) humidity gas or a high dust gas is treated, it is possible to prevent water droplets from accumulating and dust from being attached to the blower, thereby eliminating the risk of corrosion and damage to the equipment.

  Thus, in this invention, since the air blower was arrange | positioned between the adsorption reaction tower and the washing | cleaning tower, odor gas is forcedly sucked in the washing tower by the air blower. The gas sucked into the washing tower is sent to the adsorption section in the adsorption reaction tower, and the remaining odor components are effectively adsorbed when the gas passes through the adsorbent.

  Here, since the blower is provided on the outflow side of the cleaning tower, moisture and dust in the gas can be prevented from adhering to the blade surface of the blower. Therefore, there is no possibility that the blower is corroded or damaged by moisture or dust. Furthermore, since the blowing capacity and the blowing pressure can be increased to an appropriate range, the removal efficiency of water-soluble odor and particulate odor in the linear tower and the adsorption reaction tower is improved.

  Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. In this embodiment, the deodorizing apparatus is connected to a garbage disposal device at an office or home, and the odor gas generated from the garbage disposal device is washed and adsorbed. FIG. 1 is a schematic diagram showing a processing flow of a cleaning adsorption deodorizing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing an outline of an example of a conventional apparatus.

  In FIG. 1, reference numeral 1 denotes a garbage disposal device that generates odor gas during processing, and a primary pipe 2 is connected to the garbage disposal device 1. The tip end side of the primary pipe 2 penetrates and descends through the upper wall of the bubble tank (cleaning tower) 3 and extends horizontally at the bottom of the bubble tank 3. The distal end portion of the pipe 2 is formed as an L-shaped sealed tube, and a large number of outflow holes (not shown) are formed in the tube wall of the horizontal portion. The bubble tank 3 cleans and removes odorous components in the odorous gas, and stores an appropriate amount of cleaning water 4 inside. The space above the cleaning water 4 is a gas filling part 5, and the odor gas after the cleaning process is accumulated in the gas filling part 5. A secondary pipe 6 for attracting odorous gas in the gas filling unit 5 is connected to the upper surface of the bubble tank 3, and the tip side of the secondary pipe 6 is connected to the bottom surface of the adsorption reaction tower 7.

  In the bubble tank 3, a temperature sensor 8 that detects the temperature of the cleaning water 4 and a cooler 9 that cools the cleaning water 4 are provided. The temperature sensor 8 and the cooler 9 are electrically connected to a control panel 10, and the control panel 10 controls the temperature of the cleaning water 4 to be within an optimum range (40 ° C. or less) based on a signal from the temperature sensor 8. The operation of the cooler 10 is automatically controlled to be adjusted.

  A suction fan 11 as a blower is provided between the bubble tank 3 and the adsorption reaction tower 7 in the secondary pipe 6, thereby sucking the full gas in the gas filling section 5, below the adsorption reaction tower 7. It can be sent to the room. The adsorption reaction tower 7 physicochemically removes odor components in the odor gas, and is divided into a gas lower chamber 13 and an adsorption upper chamber 14 by a partition plate 12 having a large number of vent holes. Odor gas flows into the gas lower chamber 13 through the secondary pipe 6, and the inflow gas in the gas lower chamber 13 is sequentially raised to the adsorption upper chamber 14 side through the vent holes of the partition plate 12. It has become. Activated carbon as an adsorbent is loaded in the upper adsorption chamber 14, and an exhaust port communicating with the atmosphere is formed on the upper surface of the upper adsorption chamber 14.

  Next, the operation of this embodiment will be described. First, the odor gas generated in the garbage processor 1 reaches the bottom of the bubble tank 3 through the primary pipe 2 and is discharged into the wash water 4 from the outflow hole of the primary pipe 2. Then, when the odor gas rises in the cleaning water 4, the odor component in the gas is removed by washing. That is, in the bubble tank 3, the odorous gas is aerated from the gas inlet (outflow hole), so that dust such as particulate irritants and water-soluble odorous components such as ammonia, lower amines, and lower fatty acids are washed and removed with high efficiency. Is done. Since the temperature of the cleaning water 4 at this time is adjusted to a low temperature state by the cooler 9, the solubility of the gas is increased, and cleaning deodorization by the cleaning water 4 is effectively performed. In addition, by cooling the odor gas, it becomes difficult to be detected by human olfaction.

  Next, the cleaned odor gas is temporarily accumulated in the gas filling portion 5 of the bubble bubble 3 and then sucked by the operation of the suction fan 11. Then, this suction gas flows into the gas lower chamber 13 of the adsorption reaction tower 7 through the secondary pipe 6. After the inflow, the gas in the gas lower chamber 13 sequentially moves into the adsorption upper chamber 14 and floats through the vent holes of the partition plate 12. When the odor gas rises in the adsorption upper chamber 14, the odor component in the gas is adsorbed and removed by the activated carbon. In this case, the adsorption deodorization with activated carbon is an optimal adsorbent for treating low-concentration odor gas, and the moisture in the odor gas is removed by the bubble tank 3, so that the adsorption effect by activated carbon is long-lasting. And the hydrophobic odor is effectively removed.

  The deodorizing apparatus according to the present invention has an excellent deodorizing effect against high temperature odor, high humidity odor, and dust-containing odor. For example, for the high temperature odor, the odor aerated and cooled to 40 ° C. or lower in the bubble tank 3 flows into the activated carbon, so that the deodorizing action by the activated carbon is most effectively exhibited. Moreover, since the odor aerated and cooled to 40 ° C. or less in the bubble tank 3 flows into the suction fan 11 and the high temperature gas does not pass through the suction fan 11, damage to the suction fan 11 due to the high temperature gas is prevented.

  On the other hand, for high-humidity odors, aeration and cooling in the bubble chamber 3 removes moisture and drastically reduces the humidity, so that the physicochemical adsorption treatment with activated carbon is fully exhibited. In addition, since the high-humidity gas does not pass through the suction fan 11, damage to the suction fan 11 due to the high-humidity gas (strong acid humidity, strong alkaline humidity) is prevented. Furthermore, for the odor containing a lot of dust, the dust is eluted and reliably removed by the cleaning action in the bubble tank 3, and in addition, the dust does not pass through the suction fan 11. Damage to the suction fan 11 is prevented.

  Thus, the odor component in the odor gas is removed by the cleaning action and the adsorption action. That is, first, the water-soluble particulate odor component is mainly removed by the washing water 4 of the bubble tank 3, and then the insoluble particulate odor component is mainly removed by the activated carbon of the adsorption reaction tower 7. In this case, the odor gas passing through the suction fan 11 is a washed low humidity (dry) gas from which water-soluble components have been removed, and therefore, moisture hardly adheres to the surface of the suction fan 11. Therefore, there is no possibility that the suction fan 11 is corroded by moisture. Further, since dust such as water-soluble particles hardly adheres to the surface of the suction fan 11, it is possible to prevent the suction fan 11 from being damaged by dust.

  In short, by disposing the suction fan 11 between the bubble tank 3 and the adsorption reaction tower 7, corrosion and damage of the suction fan 11 due to moisture and dust can be eliminated, and the function of blowing odor gas can be remarkably improved. In addition, the deodorizing efficiency by the bubble tank 3 and the adsorption reaction tower 7 can be further increased by improving the blowing function. Furthermore, since the efficiency of the adsorption treatment and the washing treatment is increased, it is not necessary to increase the reaction volume and the reaction contact area, and the installation space is reduced and a compact design is possible.

  In addition, this invention is not limited to the said Example, A various application modification is possible. For example, in the above embodiment, the bubble tank 3, the adsorption reaction tower 7, and the suction fan 11 are each singular. However, a plurality of these constituent elements 3, 7, and 11 may be installed. 3 etc. can be connected in parallel.

It is a schematic diagram which shows the processing flow of the washing | cleaning adsorption type deodorizing apparatus which concerns on one Example of this invention. It is a schematic diagram which shows the conventional deodorizing apparatus.

Explanation of symbols

1 Garbage Disposer 2 Primary Pipe 3 Bubble Tank (Washing Tower)
4 Washing Water 5 Gas Filling Section 6 Secondary Pipe 7 Adsorption Reaction Tower 8 Temperature Sensor 9 Cooler 10 Control Panel 11 Suction Fan (Blower)
12 Partition plate 13 Gas lower chamber 14 Adsorption upper chamber 15 Deodorant liquid tank 16 Adsorption reaction tower 17 Connection pipe 18 Deodorization tower 19 Circulation pipe 20 Drain 21 Porous plate 22 Filler 23 Circulation pump

Claims (1)

A washing tower for washing and removing odor components with washing water and an adsorption reaction tower for adsorbing and removing odor components with an adsorbent are sequentially provided in a path through which the odor gas passes, and the washing is performed between the washing tower and the adsorption reaction tower. A cleaning adsorption deodorizing apparatus comprising a blower for sucking and blowing odor gas in the tower toward the adsorption reaction tower.

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