JP2008296156A - Purification apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturizable purification apparatus having excellent purifying performance. <P>SOLUTION: The deodorization (purification) apparatus 10 has a storage tank 1 storing a liquid deodorant (purification agent) 2. Inside the storage tank 1, at least a plurality of storing parts 1A-1J are stacked in the height direction and connected to each other at adjacent parts. On the outside of the storage tank 1, a suction pump 5 sucking purified gas from a flow-out port 4 is provided. A flow-in port 3 is provided in the storing part 1A in the uppermost layer and the flow-out port 4 is provided in the storing part 1J in the lowermost layer. Gas containing malodor component is introduced into the storage tank 1 from the flow-in port 3 and passed therethrough from the upper part to the lower part to flow out of the storage tank 1 from the flow-out port 4, to pass through the deodorant 2 stored in the respective storing parts 1A-1J, to thereby remove the malodor component contained in the gas. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a purification device, and more particularly to a purification device that can be suitably used as a deodorization device for removing odor components (for example, ammonia, mercaptan, methyl sulfide, hydrogen sulfide) generated in a sewage treatment plant or the like. is there.

  Conventionally, as a deodorization apparatus for removing odor components, a deodorization tank filled with a deodorization member is provided, and a gas containing the odor component is passed through the deodorization tank so that the odor component is adsorbed by the deodorization member. Devices that are configured to be removed are known.

  In Patent Document 1, a mist removing unit and a deodorizing unit are sequentially provided from the bottom to the top of the deodorization tank, and the gas containing the odor component is passed from the bottom to the top of the deodorization tank so that the gas is generated at the mist removal unit. There has been proposed a deodorizing apparatus configured to adsorb and remove an odor component contained in a gas in a deodorization unit after removing moisture contained in the odor.

  Here, the mist removing unit is provided to prevent deterioration of the deodorizing performance due to moisture contained in the gas, and a mist separator in which resin fibers are laminated, or made of resin, metal, ceramics, And a mist separator using one or a mixture of ceramic carriers. Moreover, the deodorization part is comprised as a deodorizing member with activated carbon, various filter media sprayed with the liquid deodorizing agent, etc.

  On the other hand, as a carbon dioxide gas removal device for removing carbon dioxide gas, an absorption tank filled with an absorption member is provided, and an exhaust gas containing carbon dioxide gas is passed through the absorption tank, so that the carbon dioxide gas is absorbed by the absorption member. Devices that are configured to adsorb and remove are known.

  In patent document 2, the absorption tank which makes exhaust gas contact with an absorption liquid, the separation apparatus which isolate | separates the calcium carbonate slurry formed by absorbing carbon dioxide gas from an absorption liquid, and neutralizing the separated calcium carbonate slurry with an acid There has been proposed a carbon dioxide gas removal device composed of a Japanese device and a solid-liquid separation device that separates the neutralized calcium carbonate slurry into calcium carbonate and waste water.

This carbon dioxide gas removal device has a configuration in which an inflow port for flowing exhaust gas is provided below the absorption tank, and an outflow port for discharging exhaust gas after the carbon dioxide gas is removed is provided above the absorption tank. Here, the absorbent member is composed of various filter media and the like sprayed with a calcium hydroxide solution as an absorbent.
JP 2002-136833 A Japanese Patent Laying-Open No. 2005-21878

  However, in the purification apparatuses described in Patent Documents 1 and 2 described above, the deodorizing member and the absorption are both configured to adsorb and remove the odor component and carbon dioxide gas via the deodorizing member and the absorbing member. If the member is saturated by adsorption or moisture adheres to the deodorizing member or the absorbing member, the adsorption efficiency is not good, and there is room for further improvement in terms of obtaining excellent purification performance.

  Moreover, in the purification apparatus of patent document 1 and 2 mentioned above, in order to aim at the further improvement of purification performance, in order to increase the contact area of a deodorizing member or an absorption member, and gas, occupation of a deodorization member or an absorption member There is a problem that it is difficult to reduce the size of the apparatus because it is necessary to increase the area or increase the number of deodorizing members and absorbing members.

  Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a purification device that has excellent purification performance and can realize downsizing.

  In order to solve such a problem, the purification apparatus according to the present invention includes an inlet for flowing gas into the storage tank in which the liquid purification agent is stored, and the storage from the inlet. A purifying device comprising a gas outlet that discharges the gas that has flowed into the tank by bringing it into gas-liquid contact with the purifier, and then discharges the gas to the outside of the storage tank. A plurality of reservoirs stacked in the height direction and connected to each other at adjacent portions are provided, and outside the reservoir is provided with suction means for sucking the purified gas from the outlet, Among the plurality of reservoirs, the inlet is provided in the uppermost reservoir, and the outlet is provided in the lowermost reservoir, so that the gas flowing into the reservoir is lowered from above the reservoir. It is set as the structure which passes toward.

  According to this configuration, the gas flowing in from the inflow port passes through the plurality of storage units from the upper side to the lower side of the storage tank and is stored in each storage unit until it is discharged from the outflow port. It is purified by direct gas-liquid contact with a liquid purification agent. Therefore, since the gas and the purifying agent can be stably and efficiently brought into contact with each other as compared with the conventional purification device that brings the gas and the purifying agent into contact with each other only through other members (deodorizing member or absorbing member), Excellent purification performance can be obtained.

  Moreover, according to this structure, in the several storage part, it was set as the structure which purify | cleans by making gas and a purifier contact gas-liquid, and like a conventional purification apparatus, in a storage tank, a deodorizing member and absorption Since it is not necessary to arrange a large number of members, it is possible to reduce the size of the storage tank that can provide excellent purification performance. In addition, the number, storage volume, and arrangement | positioning form of a storage part can be suitably changed according to the kind and containing substance of the gas to purify | clean, and the arrangement | positioning place of a purification apparatus.

  Furthermore, according to the present configuration, by providing the suction means for sucking the purified gas from the outlet, the gas flowing in from the inlet located above the storage tank can be supplied to the flow located below the storage tank. Since it can convey efficiently to an exit, it becomes possible to perform the gas-liquid contact with the purifier in each storage part stably. Further, by providing the suction means, it is possible to make it difficult for the gas before purification to leak out of the storage tank.

  Furthermore, according to the present configuration, the gas before purification containing odor components is not sent to the inside of the reservoir using a blower pump as in the conventional product, but the purified gas is sucked by the intake pump. As a result, the pump is unlikely to deteriorate, and the life of the attached device can be extended.

Here, in the purification apparatus according to the present invention, it is preferable that the uppermost storage section and the lowermost storage section are connected to each other to further include a circulation means for circulating the purification agent.
According to this configuration, a predetermined amount of the purifying agent can be always stored in each storage unit, and a flow from the upper side of the storage tank to the lower side can be formed in the purifying agent. The performance can be further improved.

Moreover, in the purification apparatus which concerns on this invention, it is preferable to set it as the structure further equipped with the purification agent removal means for removing the said purification agent contained in the gas after the said purification | cleaning.
According to this configuration, since the purifying agent contained in the purified gas can be reliably removed, it is possible to prevent problems such as corrosion and failure of the suction means caused by the purifier entering the suction means. It becomes.

  Furthermore, the purification apparatus according to the present invention can be suitably used as a deodorization apparatus that uses the purification agent as a deodorizer and removes odor components contained in the gas. Here, as a specific example of the deodorizing apparatus, it occurs when a deodorizing apparatus that removes odor components (for example, ammonia, mercaptan, methyl sulfide, hydrogen sulfide) generated in a sewage treatment plant or the like, or when a propane gas cylinder is regenerated. A deodorizing apparatus for removing an odor component (for example, mercaptan) is mentioned.

  According to the purification apparatus of the present invention, when the gas flowing in from the inlet passes through the plurality of storage parts from the upper side to the lower side of the storage tank, the liquid purification agent stored in each storage part. Since it is purified by contact with gas and liquid, it is possible to obtain excellent purification performance and to reduce the size of the apparatus.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 shows a deodorizing apparatus as an example of a purification apparatus according to the present invention, wherein (a) is a plan view, (b) is a right side view, (c) is a left side view, and (d) is FIG. 1 (a). It is AA sectional drawing.

  As shown in FIG. 1, the deodorizing device (purifying device) 10 has a substantially rectangular shape as a whole, and includes a chemical-resistant material storage tank 1 in which a liquid deodorizing agent (purifying agent) 2 is stored. Has been.

  Inside the storage tank 1, as shown in FIG. 1 (d), a plurality of layers (this embodiment) are stacked in the height direction (vertical direction in FIG. 1 (d)) and connected to each other at adjacent portions of the upper and lower layers. In the embodiment, 10 layers) of reservoirs 1A to 1J are provided. That is, a plurality of (nine in this embodiment) plates 11 bent in a substantially S-shape when viewed from the side are fixed inside the substantially rectangular storage tank 1 so that the height positions of the bottom surface 11a are different. Thereby, the some storage part 1A-1J is formed. In the present embodiment, the storage units 1A to 1I other than the lowermost storage unit 1J are configured to have substantially the same shape and substantially the same volume.

  Here, each storage part 1A-1J has one end connected to the inside of the storage tank 1, a bottom surface 11a extending in the horizontal direction, a side surface 11b extending in the vertical direction from one end of the bottom surface 11a, and the side surface 11b. It is composed of a connecting portion 11c that is inclined downward and connects the upper and lower storage portions 1A to 1J to each other. For this reason, the deodorizing agent 2 is stored in the storage portions 1A to 1J from the bottom surface 11a to the height of the side surface 11b, and the deodorizing agent 2 exceeding the height of the side surface 11b is stored in the storage portions 1A to 1I. And it flows into the storage parts 1B-1J of a lower layer through the connection part 11c used as the inclined surface, respectively.

  In addition, the inflow port 3 is provided on the ceiling surface of the deodorizing device 10 located above the uppermost storage unit 1A, and the outflow port 4 is above the lowermost storage unit 1J, and the deodorizing device. 10 side surfaces.

Further, a suction pump (suction means) 5 is provided outside the outflow port 4 and on the back surface of the storage tank 1 to discharge the deodorized (purified) gas from the outflow port 4 by suction.
The connecting pipe that connects the outlet 4 and the suction pump 5 is provided with a mist separator (deodorant removing means) 6 that removes the deodorant (moisture) contained in the deodorized gas. Further, an adsorbent 7 for further deodorizing the deodorized gas is provided at the subsequent stage of the suction pump 5.

  Here, the mist separator 6 is a known mist separator in which resin fibers are laminated, a mist separator using a mixture of one or more of resin, metal, ceramic, and ceramic carriers. It is composed of mist separator. Moreover, the adsorbent 7 is comprised with well-known activated carbon and various filter media.

  Further, the uppermost reservoir 1 </ b> A and the lowermost reservoir 1 </ b> J are connected by a connecting pipe 8. A circulation pump (circulation means) 9 is provided in the middle of the connecting pipe 8 to circulate the deodorant 2 stored in the lowermost reservoir 1J to the uppermost reservoir 1A again.

  Here, the type of the liquid deodorant 2, the size of the entire storage tank 1, the conditions of the storage units 1A to 1J provided in the storage tank 1 (for example, the storage volume, the number of installations, the arrangement form), and the suction pump 5 and the operating conditions of the circulation pump 9 are appropriately determined according to the type and concentration of the odorous component contained in the gas and the required deodorizing performance.

Next, the deodorizing method using the deodorizing apparatus 10 in this embodiment is demonstrated, referring drawings.
FIG. 2 is a cross-sectional view showing an example of use of a deodorizing apparatus which is an example of a purification apparatus according to the present invention.

  First, the liquid deodorant 2 flows into the storage tank 1 through the inlet 3, and a predetermined amount of the deodorant 2 is stored in each of the storage units 1 </ b> A to 1 </ b> J provided inside the storage tank 1. Keep it.

  Next, the inside of the storage tank 1 is sucked by the suction pump 5, and the gas containing the odor component flows in from the inlet 3 while circulating the deodorizer 2 by the circulation pump 9. Thereby, the gas containing an odor component passes through each storage part 1A-1J toward the downward direction from the upper part of the storage tank 1, stirs the deodorizer 2 stored by each storage part 1A-1J, and is gas-liquid. After deodorizing by contact, the gas from which the odor component has been removed by the deodorizer 2 flows out from the outlet 4. In FIG. 2, white arrows indicate the flow of gas containing an odor component, and black arrows indicate the flow of the deodorizer 2.

  Then, the gas flowing out from the outlet 4 is sucked into the suction pump 5 through the mist separator 6, further passes through the adsorbent 7, and then released into the atmosphere.

  That is, according to the deodorizing apparatus 10 according to the present embodiment, the gas and the deodorizing agent 2 can be efficiently brought into contact with each other by gas-liquid contact in the plurality of storage units 1A to 1J. Thus, compared with the case where gas and the deodorizing agent 2 are made to contact via a deodorizing member, the outstanding deodorizing performance can be obtained.

  Moreover, according to the deodorizing apparatus 10 which concerns on this embodiment, by having set it as the structure deodorized by the gas-liquid contact in several storage part 1A-1J, like the conventional deodorizing apparatus mentioned above, inside the reservoir 1 Since it is not necessary to arrange a deodorizing member or an absorbing member, it is possible to reduce the size of the deodorizing apparatus 10 that can provide excellent deodorizing performance.

  Furthermore, according to the deodorizing apparatus 10 according to the present embodiment, the gas introduced from the inlet 3 located above the storage tank 1 by including the suction pump 5 that sucks the deodorized gas from the outlet 4. Can be efficiently conveyed to the outlet 4 located below the storage tank 1, so that the gas-liquid contact with the deodorizer 2 in each of the storage units 1 </ b> A to 1 </ b> J can be reliably performed. In addition, by providing the suction pump 5, it is possible to make it difficult for the gas before deodorization to leak out of the deodorization apparatus 10.

  Furthermore, according to the deodorizing apparatus 10 according to the present embodiment, the uppermost reservoir 1A and the lowermost reservoir 1J are connected by the connecting pipe 8, and the deodorizing agent 2 is circulated in the middle of the connecting pipe 8. By providing the circulation pump 9, a predetermined amount of the deodorizing agent 2 can be always stored in each of the storage units 1 </ b> A to 1 </ b> J, and a flow from the upper side of the storage tank 1 to the lower side can be formed in the deodorizing agent 2. Therefore, the deodorizing performance by the deodorizing agent 2 can be further improved.

  Furthermore, according to the deodorizing apparatus 10 which concerns on this embodiment, the deodorizer 2 contained in the gas after deodorization is ensured by providing the mist separator 6 for removing the deodorizer 2 contained in the gas after deodorization. Can be removed. Therefore, since it can suppress that the deodorizing agent 2 enters into the suction pump 5, the corrosion and failure of the suction pump 5 which arise by mixing of the deodorizing agent 2 can be prevented.

  Furthermore, according to the deodorizing apparatus 10 according to the present embodiment, by further including the adsorbent 7 at the subsequent stage of the suction pump 5, the gas sucked from the storage tank 1 can be further deodorized and released into the atmosphere. .

  In addition, in the deodorizing apparatus 10 which concerns on this embodiment, although the structure provided with the suction pump 5, the mist separator 6, and the adsorption body 7 in the back surface of the storage tank 1 was demonstrated, these installation places are not restricted to this, It can be changed as appropriate.

  Moreover, in the deodorizing apparatus 10 which concerns on this embodiment, the structure which provided the some storage part 1A-1J laminated | stacked in the height direction inside the storage tank 1, and mutually connected by the adjacent part is demonstrated. However, the arrangement | positioning number and arrangement | positioning form of storage part 1A-1J are not restricted to this, It can change suitably according to the installation space of the deodorizing apparatus 10, and the kind and density | concentration of the gas to deodorize. For example, when the height of the deodorizing device cannot be increased so much, the number of storage units provided in the height direction may be reduced, and a plurality of storage units may be arranged side by side accordingly.

  Furthermore, in the deodorizing apparatus 10 according to the present embodiment, the upper and lower reservoirs 1A to 1J are connected in the space formed between the upper and lower plates 11 in order to efficiently contact the gas and the deodorizing agent 2. However, it is preferable to fill the space other than the connecting passage through which the gas and the deodorizing agent 2 can pass with a filler.

  Furthermore, in the deodorizing apparatus 10 according to the present embodiment, the inlet 3 is provided above the uppermost reservoir 1A, and the outlet 4 is provided above the lowermost reservoir 1J. If 3 is formed in the upper layer side rather than the outflow port 4, an installation place will not be restricted to this. For example, the inflow port 3 may be provided in each of the storage units 1A to 1I other than the lowermost storage unit 1J, and gas may be caused to flow in from different inflow ports 3 in accordance with the concentration of the odor component contained in the gas. .

  Specifically, when deodorizing a gas having a relatively high concentration of odor components, the gas is introduced into the storage tank 1 from the inlet 3 provided in the uppermost storage portion 1A, and the concentration of the odor components is relatively high. When deodorizing low gas, it is made to flow in from the inflow port 3 provided in the storage part 1E of the intermediate layer. Thereby, it becomes possible to efficiently deodorize gases having different odor component concentrations simultaneously with one deodorizing apparatus 10.

  Hereinafter, the result verified about the deodorizing performance of the deodorizing apparatus 10 in this embodiment is shown.

  First, in the storage tank 1 of the deodorizing apparatus 10 shown in FIG. 1 described above, a liquid deodorizing agent 2 is stored in the storage units 1A to 1J, and a deodorizing test for a gas containing odor components (hydrogen sulfide and mercaptan) is performed. went.

  In this deodorization test, as shown in Table 1 below, a plurality of types of gases having different contents of hydrogen sulfide and mercaptan were used as sample gases, and these gases were respectively supplied by a suction pump 5 at 2000 liters / min. It sucked and performed by flowing in the storage tank 1 at about 20-30 km / h.

  The gas before flowing into the inlet 3 of the storage tank 1 and the gas after flowing out from the outlet 4 of the storage tank 1 (specifically, the gas is discharged from the outlet 4 and passes through the mist separator 7. The previous gas) was analyzed, and the content of odor components contained in each gas was measured and the odor was confirmed. Here, the content of the odor component is measured by measuring the concentration of each gas 3 to 5 times using the Kitagawa type detection tube, and calculating the average value from the measured concentration to obtain the odor component concentration. The confirmation was made by the test staff directly smelling the odor. These results are also shown in Table 1 below.

  Further, as a comparative example, a deodorization test was performed on the same sample gas as described above using the conventional deodorization apparatus 10A shown in FIG. As shown in FIG. 3, the deodorizing apparatus 10A is composed of a deodorizing tank 1a filled with a filter medium 10a sprayed with a liquid deodorizing agent 2, and a gas inlet 3 is provided below the deodorizing tank 1a. A gas outlet 4 is provided above the deodorizing tank 1a. That is, the deodorizing apparatus 10A allows the gas containing the odorous component to pass from the lower side to the upper side of the deodorizing tank 1a so that the odorous component can be adsorbed and removed by the filter medium 10a sprayed with the deodorizing agent 2. It is configured.

In addition, the code | symbol 10b in FIG. 3 points out the nozzle for spraying the liquid deodorizing agent 2 on the filter medium 10a, and the code | symbol 10c points out the circulation pump which circulates the deodorizing agent 2 inside the deodorizing tank 1a.
Moreover, this deodorization test was done by flowing the gas containing an odor component into the deodorization tank 1a at a rate of 2000 liter / min.

  As shown in Table 1, Example No. performed using the deodorizing apparatus 10 in the present embodiment. 1-No. In Comparative Example No. 10 performed using the conventional deodorizing apparatus 10A. 1-No. Compared to 10, it was confirmed that the odorous component contained in the gas before deodorization was completely removed. The detection limit concentration of the detection tube was 0.2 ppm for both hydrogen sulfide and mercaptan, and those below that were set to be below the detection limit (ND).

  In addition, although this embodiment and the Example demonstrated the case where the purification apparatus which concerns on this invention was used as the deodorizing apparatus 10, this invention is not limited to this, Also when using a purification apparatus as a carbon dioxide removal apparatus It can be used suitably.

  In this case, in the apparatus shown in FIG. 1 described above, a gas containing carbon dioxide gas is introduced into the storage tank 1 in which the calcium hydroxide solution (purifying agent) is stored instead of the deodorizing agent 2 through the inlet 3. Inflow. Thereby, when the carbon dioxide contained in the gas passes from the upper side of the storage tank 1 to the lower side, the carbon dioxide gas is absorbed into the calcium hydroxide solution by being in gas-liquid contact with the calcium hydroxide solution, and as calcium carbonate. It becomes possible to collect.

  The purifying apparatus according to the present invention is a deodorizing apparatus that removes odorous components generated in hospitals, warehouses, sewage treatment plants, stores, homes, etc., and odorous components (for example, mercaptans) that are generated when regenerating propane gas cylinders. In addition to being used as a deodorizing device for removing or as a carbon dioxide removing device for removing carbon dioxide contained in exhaust gas, for removing allergic components (eg cedar pollen) floating in the air It can also be used as an air purifier.

1 shows a deodorizing apparatus as an example of a purification apparatus according to the present invention, wherein (a) is a plan view, (b) is a right side view, (c) is a left side view, and (d) is an AA in FIG. 1 (a). FIG. It is sectional drawing which shows the usage example of the deodorizing apparatus which is an example of the purification apparatus which concerns on this invention. It is a side view which shows the conventional deodorizing apparatus used by the comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank 1A-1J Storage part 2 Deodorizing agent (purifier)
3 Inlet 4 Outlet 5 Suction pump (suction means)
6 Mist separator (cleaning agent removal means)
7 Adsorbent 8 Connection pipe 9 Circulation pump (circulation means)
10 Deodorizing device (Purification device)

Claims (5)

Purification is performed by bringing the inflow port into which the gas flows into the storage tank and the gas that has flowed into the storage tank from the inflow port into gas and liquid contact with the storage tank in which the liquid purification agent is stored. And a purifying device comprising an outlet for discharging out of the storage tank,
Inside the storage tank, a plurality of storage parts stacked at least in the height direction and connected to each other at adjacent parts are provided, and the purified gas is supplied to the outside of the storage tank. And providing suction means for suction from the
Among the plurality of reservoirs, the inlet is provided in the uppermost reservoir, and the outlet is provided in the lowermost reservoir, so that the gas flowing into the reservoir is lowered from above the reservoir. Purifying device characterized by being passed toward   The purification apparatus according to claim 1, further comprising a circulation means for connecting the uppermost storage section and the lowermost storage section to circulate the purification agent.   The purification apparatus according to claim 1, further comprising a purification agent removing unit for removing the purification agent contained in the purified gas.   The purification device according to any one of claims 1 to 3, wherein the purification agent is a deodorizing agent, and the gas is a gas containing an odor component.   The purification device according to any one of claims 1 to 3, wherein the purification agent is a calcium hydroxide solution, and the gas is a gas containing carbon dioxide gas.

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