JP2006102618A - Gas-liquid separator, exhaust gas cleaning apparatus using the same, or air cleaning apparatus or air sterilizing and cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator without enlarging the size and with simple constitution, which can effectively separate PM (particulate matter) in the exhaust gas or dust of toxic fine particles in gas like air, surely separate and collect even liquid attached to the gas-liquid separator containing a part of toxic substance, difficult to collect in the past, and prevent flowing out to the outside. <P>SOLUTION: An outer cylinder member 21 having a small diameter cylinder 23 imparting rotational force to an object gas-liquid mixture to be cleaned and flowed flowing in, is provided on the downstream side of a flowing-in port 22 formed on one end. Cylindrical bodies 27, 28 are adjacently disposed each other on the downstream side of the outer cylinder member. A communicating tube 30 with a smaller diameter than the cylindrical bodies is interposed between the cylindrical bodies to communicate them. A liquid receiver 32 is installed under the cylindrical bodies, and a gas outlet port 33 is provided at the most down stream side of the cylindrical bodies. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gas-liquid separation device for separating a liquid material adsorbing harmful substances such as black smoke in exhaust gas or dust particles in the air from gas, and exhaust gas such as a diesel engine using the gas-liquid separation device. The present invention relates to a purification device, an air purification device, or an air sterilization purification device.

  In general, exhaust gases emitted from engines such as automobiles contain harmful emissions such as carbon monoxide, hydrocarbons and nitrogen oxides, and various regulations have been made due to air pollution problems. In particular, black smoke in exhaust gas in diesel engines has recently attracted attention as DEP (Diesel Exhaust Particulate diesel exhaust particulates).

  These fine particles have an SPM (Suspended Particulate Matter suspended particulate matter) in the atmosphere defined by environmental standards of 10 μm or less, but are about 0.1 μm, and the particle size is extremely small. The removal process is physically difficult, and minute dusts pollute the environment as suspended matter, so research to reduce the amount of black smoke in the exhaust gas is underway.

  As an exhaust gas purifying device for a diesel engine, there is one in which a catalyst filter is attached to a part of an exhaust pipe. Although this filter system can reduce PM (Particulate Matter Particulate Matter), which is harmful particulates including DEP, such as black smoke, the reduction amount is 70-80%, and it needs to be drastically reduced. It was not satisfactory as a solution for environmental pollution.

  Moreover, in order to collect PM, the particles are so small that the filter mesh must be made finer. As a result, exhaust back pressure (exhaust resistance) increases and exhaust efficiency increases. It deteriorates and increases the load on the engine, resulting in an increase in the amount of NOx, a negative impact on output and fuel consumption, and a fire due to catalyst temperature rise caused by clogging of PM in the filter There was a risk of inducing an accident.

  In addition, Japanese Patent Application No. 2003-350097 filed by the present applicant for further improving the PM removal effect without using a filter includes an exhaust gas inlet and an inflow in the exhaust path of a diesel engine. In addition, a contactor that introduces oil and fat other than fossil fuel, such as vegetable oil, into contact with the inflowing exhaust gas is connected, and the oil and fat such as vegetable oil that has adsorbed exhaust particulates is separated in this contactor. It is characterized by flowing into the equipment and separated from exhaust gas. By utilizing the affinity of oils and fats other than fossil fuels such as vegetable oil, PM such as black smoke, which is harmful particulates, is effectively removed from the exhaust gas. The invention of separating and removing is shown.

  According to the exhaust gas purification device of the above patent application, a significant removal effect of PM, which is a harmful particulate, can be obtained. The cyclone type gas-liquid separation device has an exhaust gas as shown in FIG. The inflow section (72) has a separator (71) in which a cylindrical body with a substantially frustoconical shape with a large diameter on the upper surface is installed, separating the exhaust gas and vegetable oil flowing in as indicated by the arrows Since it is formed so as to flow along the frustoconical tangent from the inlet (71a) on the upper end side surface of the vessel (71), a spiral flow is generated inside the frustoconical cylinder. The vegetable oil having adsorbed PM is dropped on the bottom of the lower separation container (74) and separated from the exhaust gas by centrifugal force due to the swirl flow utilizing the gas flow velocity. The exhaust gas from which most of the PM has been removed descends in the truncated cone-shaped tube, comes into contact with the bottom surface, rises in the center, and is discharged to the outside from an exhaust gas exhaust port (73) provided above. .

  However, at this time, since the inlet (72) and the outlet (73) to the separator (71) are close to each other, a part of the vegetable oil that has adsorbed the inflowing PM is indicated by A in the figure. Thus, it adheres to the opening lower end part of the discharge port (73), and the amount of attachment of the liquid increases with the inflow. Since the vicinity of the exhaust port (73) is a passage for exhaust gas flowing out to the outside, the vegetable oil adhering to the cylindrical inner wall is blown out or pushed out by the strong flow rate of the cyclone, Part of the adsorbed PM A was not removed into the separation container (74) and could not be prevented from flowing out.

  Further, the amount of adsorption of the PM increases as the amount of vegetable oil flowing into the gas-liquid separator increases, but the amount of liquid mixed in the gas cannot be increased more than a predetermined amount from the viewpoint of gas-liquid separation efficiency. The gas-liquid separation efficiency was 80 to 96% even by the cyclone separation structure effective as a liquid separation apparatus, and 100% gas-liquid separation was structurally difficult. Therefore, in order to adsorb a large amount of PM, there is a problem that the apparatus has to be enlarged, and there is a drawback that the object of use is limited.

  The present invention has been made in consideration of the above points, and can effectively separate dust and the like, which are harmful fine particles contained in a gas such as PM in exhaust gas or air, from the gas. A large-scale gas-liquid separation device that reliably separates liquid substances containing some harmful substances that adhere to the gas-liquid separation device, which was difficult to collect, and prevents them from being collected and discharged to the outside. It is an object to provide an exhaust gas purifying device such as a diesel engine, an air purifying device, or an air sterilizing and purifying device having a high performance using the gas-liquid separation device. And

  In order to solve the above problems, a gas-liquid separation device according to the present invention has an outer cylinder in which a small-diameter cylinder for applying a rotational force to an inflow purification target gas-liquid mixed gas is formed downstream of an inlet formed at one end. A plurality of cylindrical bodies are arranged adjacent to the downstream side of the outer cylindrical member, a communication cylinder having a diameter smaller than that of the cylindrical bodies is interposed so as to communicate between the cylindrical bodies, and the plurality of cylindrical bodies A liquid receiving part is installed below the gas cylinder and a gas outlet is provided on the most downstream side of the cylindrical body.

  And the invention of the exhaust gas purification apparatus such as a diesel engine according to claim 5 is the invention in which the fats and oils such as vegetable oil are introduced into contact with the inflowing exhaust gas, and the fats and oils adsorbing the exhaust particulates from the contactors Is introduced into the gas-liquid separator according to claim 1 and separated from the exhaust gas.

  According to a sixth aspect of the present invention, there is provided an air purifying device comprising: a contactor that is connected to an air flow passage, introduces a liquid material such as water into contact with the inflowing air; and the liquid that adsorbs dust from the contactor. The body is caused to flow into the gas-liquid separation device according to claim 1 and separated from air, and the invention of the air sterilization purification device according to claim 7 is connected to the air flow passage, A contactor that introduces an adsorbed liquid into contact with the inflowing air, and the adsorbed liquid that adsorbs bacteria, viruses, and the like from the contactor flows into the gas-liquid separation device according to claim 1 and is separated from the air for purification. The air is discharged and the adsorbed liquid is introduced into the sterilization tank so as to be sterilized.

  According to the configuration of the present invention, a gas-liquid shunt device that can separate dust, germs, and the like, which are harmful particulates contained in a gas such as PM or air in exhaust gas, from the gas in a small space, and In addition to being able to be obtained at a low cost with a simple structure, it also has an unprecedented advanced gas-liquid separation performance that reliably separates and removes some liquid material adhering to the discharge pipe wall, which was difficult to collect with conventional cyclones. The gas-liquid separation device having the above can be obtained, and the exhaust gas can be made clean by preventing harmful substances from flowing out. According to the fifth aspect of the present invention, an exhaust gas purification device such as a diesel engine having a high PM collection efficiency and a simple and compact structure can be manufactured at low cost.

  According to invention of Claim 6, the dust in the dirty air which generate | occur | produces in a manufacturing factory can be removed and cleaned with high efficiency, and clean air can be sent out outside. According to the seventh aspect of the present invention, bacteria and viruses in the air floating in a hospital or the like are adsorbed to water, and the air is separated from the water solution adsorbing the bacteria, and the purified air Can be sterilized, and bacteria and harmful fine particles adsorbed on water can be sterilized.

  Hereinafter, one embodiment of a gas-liquid separation device of the present invention will be described with reference to the drawings by using an example adopted in an exhaust gas purification device in a diesel engine.

  FIG. 1 is an apparatus diagram showing an exhaust gas purification configuration together with an outline of a fuel path of a diesel engine. Fuel such as light oil from a fuel tank (1) is distributed from a disperser (2) to a fuel filter (3), and a fuel injection pump. (4) is combusted by the engine (5), and the surplus fuel is returned to the disperser (2) by the return pipe (6) to constitute a combustion circuit and exhaust gas from the engine (5) is discharged into the atmosphere. A contactor (9) and a gas-liquid separator (10) are connected to the rear end of the exhaust pipe (7) that discharges into the exhaust pipe.

  The contactor (9) utilizes the liquid level adsorption action by the affinity characteristics possessed by vegetable oils such as soybean oil, and mixes and stirs vegetable oil and exhaust gas to remove PM that is harmful particulates such as black smoke in the exhaust gas. Adsorbed and collected, an exhaust gas inlet (11) and an exhaust gas outlet (12) flowing into the exhaust gas are provided.

  Then, the vegetable oil such as soybean oil mixed at a ratio of about 10% with respect to the combustion light oil fuel is supplied into the tank from the separately arranged vegetable oil tank (13), and the exhaust gas flows in from the inlet (11). It is provided so as to flow out from the outlet (12) through a space (14) in which the contact area between the exhaust gas and the vegetable oil is increased by bringing it into contact with a plurality of layers. As shown in the enlarged view of FIG. 2, a plurality of tanks, in the case of this embodiment, three box-shaped bottomed tanks (15), (16) and (17) having different outer diameters are polymerized concentrically. It has been made.

  At this time, the temperature of the exhaust gas discharged from the engine (5) is high, whereas the flash point of soybean oil, which is the vegetable oil, is 280 ° C., so that the exhaust gas flowing into the contactor (9) flows into the exhaust path. A heat exchanger (18) is arranged in the exhaust gas, and after the exhaust gas temperature is cooled to about 180 to 200 ° C. below the smoke generation temperature by the heat exchanger (18), it is made to flow into the contactor (9) to suppress the smoke of vegetable oil. ing.

  The vegetable oil reservoirs (15a), (16a), and (17a) are provided at the bottom of each tank (15), (16), and (17), and the upper part of the reservoir is made of a number of small through holes (15b) by punching metal or the like. (16b) (17b) are drilled, and as shown by the arrows, the exhaust gas flowing in falls from the upper side of the inner tank (15) or hits the vegetable oil stored in the bottom reservoir (15a). , Scattered as a mixture.

  Due to the contact between the exhaust gas and the vegetable oil, PM in the exhaust gas is adsorbed by the vegetable oil, and the mixture flows out from the large number of small through holes (15b), and the tank (15 ) And the inner wall (16c) of the outer intermediate tank (16) formed in the same manner as in FIG. The small through holes (15b) are not formed in the tank surface, but may be those in which a net-like body is attached to the tank surface.

  The vegetable oil, which is a mixture with the exhaust gas in contact with the inner wall (16c) of the intermediate tank, flows down along the tank inner wall (16c), and the liquid part is stored in the storage part (16a) below the tank (16). In addition, the scattered vegetable oil flows out from the small through hole (16b) to the outermost outer tank (17) side, and this configuration increases the contact area between the exhaust gas and the vegetable oil, thereby increasing the vegetable oil of PM. The amount of adsorption to can be increased.

  The vegetable oil that has adsorbed PM in the exhaust gas rises along the inner wall surface (17c) of the outermost tank and flows out from the outlet (12) provided at the upper end of the tank (17). The vegetable oil that flows down from the reservoir (17a) at the bottom of the outermost tank and is stored in the reflux tank (17d) provided so as not to come into contact with the inflowing exhaust gas is oil provided downstream of the contactor (9). A circulation cycle is formed so as to flow into the cooler (19) to be cooled and to flow again into the inner tank (15) disposed at the top of the contactor (9) by the pump (20).

  The vegetable oil cooled and refluxed by the oil cooler (19) flows out from the outlet (12) of the contactor (9) to the adjacent gas-liquid separator (10), and is mixed with this vegetable oil. The temperature of the exhaust gas introduced into the separation device (10) can be further lowered, but when the exhaust gas is sufficiently cooled by the heat exchanger (18), the oil cooler (19 ) Need not be installed.

  Thus, the gas-liquid separator (10) has a partially cutaway perspective view shown in FIG. 3 and a side sectional view shown in FIG. 4 at one end of a cylindrical outer cylinder member (21). A small-diameter inflow port (22) is formed, and a small-diameter cylinder (23) is disposed on the downstream side of the small-diameter inflow port (22) with a little space from the end of the inflow port (22). The circumferential surface of the small-diameter cylinder (23) has a predetermined width in the longitudinal direction over the rear end surface (21a) of the outer cylinder member (21), as can be understood from FIG. 5 which is a sectional view from the front. The two openings (23a) are made to face each other, and from one end of the opening (23a), an arc shape is formed outwardly in the tangential direction of the small-diameter cylinder (23) so as to cover the opening (23a). The guide piece (24) extends in the same direction, and its end edge is brought into contact with the inner surface side of the outer cylinder member (21) to form a guide channel (25).

  The end face on the inflow side of the small-diameter cylinder (23) is closed by a shielding plate (26), and further, the gap flows between the guide piece (24) serving as the guide channel (25) and the small-diameter cylinder (23). The opening on the side is also covered with the shielding plate (26), so that the exhaust gas flowing in from the inlet (22) side hits the shielding plate (26) in the outer cylinder member (21). The flow is changed in the circumferential direction in the outer cylinder member (21), and further flows into the guide channel (25) along the guide piece (24) to become a rotating flow in the small diameter cylinder (23). It is configured to flow in and flow downstream.

  On the downstream side of the outer cylinder member (21), a plurality of cylindrical bodies (27) (28) having a diameter slightly smaller than that of the outer cylinder member (21) are arranged adjacent to each other. 27) Communication with the same diameter as the small cylinder (23) so that both cylinders (27) and (28) communicate with each other through the central part of the partition wall (29) dividing the space between (28) A cylinder (30) is interposed.

  Further, as shown in FIG. 6, the lower surface of the cylindrical body (27) (28) positioned before and after the communicating cylinder (30) has a diameter approximately equal to that of the small diameter cylinder (23) over the longitudinal direction. A permeation hole (31) having a width dimension of is provided, and a liquid receiving tank (32) is disposed below the cylindrical body (27) (28) communicating with the permeation hole (31). The cylindrical body (28) An exhaust gas outlet (33) is provided at the other end which is the most downstream side.

  The openings (23a) formed on the circumferential surface of the small-diameter cylinder (23) are not limited to two and may be provided in three or more. The configuration of the small-diameter cylinder may also be specifically formed as a cylindrical shape. At least, a cylindrical shape is formed in the central portion by combining a plurality of arcuate guide pieces (24) whose ends are in contact with the inner surface of the outer cylindrical member (21), and the inner cylindrical member (21) has a cylindrical shape. The inflowing exhaust gas may be a vortex in the inner part of the guide piece (24).

  With the above-described configuration, the gas-liquid mixed exhaust gas to be purified flowing into the outer cylinder (21) from the inlet (22) comes into contact with the shielding plate (26) as indicated by an arrow. The outer cylinder (21) expands to the periphery, is guided to a guide piece (24) that is in contact with the inner surface of the outer cylinder, and flows into the guide channel (25). ), A rotational force is applied, and the vortex flows into the cylindrical body (27) from the end of the small diameter cylinder (23).

  The swirled exhaust gas forms a cyclone due to expansion and centrifugal force when flowing into the cylindrical body (27), and the vegetable oil and exhaust gas that have adsorbed PM in the cylindrical body (27) The vegetable oil adsorbed by the liquid PM is dropped from the permeation hole (31) to the lower liquid receiving tank (32) by centrifugal force and gravity.

  The vegetable oil that has adsorbed the PM that has fallen into the liquid receiving tank (32) is guided to the downstream collection tank (35) by the pressure in the swirling cylindrical body (27) and the gravity of the liquid itself. Therefore, it does not collect in the tank and is not blown up by the vortex. The exhaust gas to be purified can be mixed with a larger amount of liquid material, and high PM collection efficiency can be obtained at a high density.

  The collection tank (35) is connected to an oil supply pipe (36) from the vegetable oil tank (13) disposed at the top, together with an opening through which the vegetable oil flows from the gas-liquid separator (10). If the oil level in the collection tank (35) is lowered by the oil level sensor (S1) installed in (35), the pump (37) is driven to replenish new vegetable oil from the tank (13). Yes.

  The vegetable oil stored in the collection tank (35) branches through a multi-plate oil filter (38), one of which is recirculated to the contactor (9) by a pump (39), and again comes into contact with exhaust gas. The other is to contribute to the adsorption of PM, and the other is introduced to the disperser (2) provided in the middle of the fuel path from the fuel tank (1) to the engine (5), and is an aggregate of PM in the vegetable oil. A certain black smoke particle is dispersed to stabilize the mixing ratio of light oil fuel and vegetable oil from the fuel tank (1), and then supplied to the engine (5) together with the light oil fuel to be burned as fuel. .

  At this time, the engine temperature is about 2000 ° C., which is much higher than the carbon combustion temperature of 600 to 700 ° C., so PM in the vegetable oil is completely burned and consumed. The vegetable oil decreased by combustion is replenished as needed from the tank (13) by controlling with the sensor (S1), so that the PM concentration in the circulating vegetable oil becomes abnormally high and clogs the filter (38). Prevents and does not adversely affect the combustion and exhaust paths.

  Thus, the exhaust gas from which the vegetable oil that has adsorbed PM in the cylindrical body (27) is removed flows into the communication cylinder (30) while maintaining the vortex, and then flows into the adjacent cylindrical body (28). When passing through the communication tube (30), the liquid material indicated by B in FIG. 4 adheres to the vicinity of the opening on the inflow side of the communication tube (30).

This is because when the exhaust gas forming the vortex flow in the cylindrical body (27) moves downstream, the communication cylinder (30) serving as a passing portion is small in diameter and is decompressed during circulation, The result is that the slightly remaining mist-like vegetable oil gradually adheres, and the amount of the attached liquid is very small. For example, the contactor (9) and the gas-liquid component (10) configuration Thus, even if 20 L corresponding to 99% of the amount of vegetable oil adsorbing the liquid PM is removed from the exhaust gas amount of 30 m ³ per minute, about 20 cc is produced.

  Therefore, the amount of PM in the adhered liquid B is small, but by adhering the liquid to the communication cylinder (30), the adhered liquid B moves slowly in the communication cylinder (30). When it reaches the downstream outlet opening and flows into the adjacent cylindrical body (28), it falls into the liquid receiving tank (32) via the permeation hole (31) by the centrifugal force in the cylindrical body (28). Therefore, PM that finally flows out from the outlet (33) to the external space is removed at a value close to 100%, and only clean exhaust gas is discharged into the atmosphere.

  The PM adsorbed on the liquid B adhering to the communication hole (29) originally flows out to the outside without being separated from the centrifugal separation by the gas-liquid separation device. In order to recover the remaining several percent of the liquid even after passing through the vessel, it is necessary to provide other equipment such as a filter device, which increases the product cost and requires installation space. According to the separation device (10), there is no need for a separate member for recovering the remaining liquid, and the structure is simple and compact, so that it can be manufactured at low cost.

  If the liquid material cannot be separated only by the above configuration because the exhaust gas blowing pressure is small or the amount of liquid is large compared to the amount of exhaust gas, it is adjacent to the cylindrical body (28). Further, the communication tube (30 ') and the cylindrical body (28') may be connected.

  In the above embodiment, the example in which the gas-liquid separation device of the present invention is employed as a gas-liquid separation device that separates and removes harmful substances such as PM from exhaust gas in an exhaust gas removal device such as a diesel engine has been described. The gas-liquid separation device of the invention is not limited to this, and can be applied to many other gas cleaning devices.

  For example, FIG. 7 which attached | subjected the same code | symbol to the same part as the said Example uses a gas-liquid separation apparatus (10) as a dust collection part in an air cleaner (51), and is a fan (52) and its downstream. The contactor (9) having the same configuration as that of the above embodiment is disposed. Similarly, the gas-liquid separator (10) has two outer cylinder members (21) and two cylindrical bodies (27) and (28) adjacent to the outer cylinder member (21), and a guide flow in the outer cylinder member (21). A small-diameter cylinder (23) that has a passage (25) and gives rotational force to the air that flows in by the blower (52) is installed, and a communication cylinder (30) is installed between the cylinders (27) and (28). It is arranged at the center of the outer cylinder cross section. A liquid receiving tank (32) is disposed below the cylindrical bodies (27) and (28) via a permeation hole (31), and the other end of the cylindrical body (28) on the most downstream side is clean. The air outlet (33) is now installed.

  The liquid receiving tank (32) is connected to the lower collection tank (35), and the liquid, for example, water that adsorbs the dust that has fallen into the liquid receiving tank (32) is swirled. Since it flows into the collection tank (35) by the pressure in the cylindrical body (27) and the gravity of the liquid itself, it does not accumulate in the tank and is not blown up by the vortex. In the collection tank (35), after the mist-like liquid is captured by the demister (40), the cleaned air is discharged from the upper discharge port to the outside, and the liquid is further transferred to the downstream settling tank (55). Led.

  In the sedimentation tank (55), an inflow pipe (55a) for adsorbing dust from the gas-liquid separator (10) and the collection tank (35) is opened at the center of the upper section of the tank, and the inflow pipe (55a) Dust that flows in with the water separates from the water and settles at the bottom of the tank, and further settles and collects on the cartridge filter (58) via the valve member (57). Is.

  Of the water stored in the upper part of the tank, the relatively less dirty water in the upper part of the tank is separated from the contactor (9) by the circulation pipe (56) and the pump (59) connected to the upper outer wall of the settling tank (55). ) And re-contact with dirty air to contribute to the adsorption of dust. When the water level in the sedimentation tank (55) drops, this liquid level is detected by the float switch (60) New water is replenished from a water tank (not shown) installed.

  With the above configuration, dirty air containing dust generated at the manufacturing plant is removed and purified by the contactor (9) and the gas-liquid separator (10). Clean air can be sent out from the outlet (33) provided on the most downstream side.

  Further, according to the gas-liquid separation device of the present invention, although not particularly shown, it can also be used for a deodorization device, and, similar to the example of the air cleaner (51), the blower (52) and the gas-liquid separation device. (10) Along with the contactor that mixes air and the deodorizing catalyst solution and the liquid reservoir that replaces the settling tank (55), the deodorization device is configured to eliminate odors in painting plants and food processing plants. By letting the contained air flow down to the contactor and gas-liquid separation device with a blower, the odor molecules in the air are mixed with the catalyst solution in the contactor and adsorbed to the catalyst solution. And the catalyst solution on which the odorous molecules are adsorbed.

  Then, clean air from which odorous molecules have been removed is sent to the outside from the outlet of the separation device, and the catalyst solution is introduced into the liquid reservoir and returned to the contactor to recapture the odorous molecules. When the liquid is reduced, the required amount of the catalyst liquid is replenished from the catalyst tank in the same manner as described above and used in a circulating manner.

  Next, an embodiment in which the gas-liquid separation device of the present invention is applied to an air sterilization and purification device that sterilizes and purifies bacteria and viruses in the air will be described. The air sterilization and purification device (61) shown in FIG. 8 with the same reference numerals assigned to the same parts as in the embodiment is similar to the air cleaner (51) in the blower (62) and the gas-liquid separation device (10). In addition, a contactor (9) for mixing the air to be purified containing bacteria and an adsorbing liquid such as water, a collection tank (35), and a sterilization tank (65) instead of the settling tank (55) are arranged. Is configured.

  The air containing bacteria and viruses floating in hospitals and other hospitals is circulated to the contactor (9) and the gas-liquid separator (10) by the blower (52), so that the bacteria in the air are contacted ( 9) It is mixed with water and adsorbed in water, and further separated from the water / liquid in which air, bacteria and viruses are adsorbed by the vortex in the gas-liquid separator (10).

  Then, clean air from which bacteria and the like have been removed is sent out from the outlet (33) of the gas-liquid separator (10), and water with bacteria and viruses attached thereto is collected in the same manner as in the previous embodiment. ). In the collection tank (35), after the mist-like liquid is captured by the demister (40), the purified air is discharged to the outside through the upper discharge port, and the water adsorbing bacteria is collected in the collection tank ( It falls to the bottom of 35) and is guided further downstream by a sterilization tank (65).

  In the sterilization tank (65), a titanium oxide powder (66) having a minute particle size as a photocatalyst is mixed. The photocatalyst powder (66) is excited and activated by ultraviolet irradiation from an ultraviolet lamp (67) placed in water, thereby killing bacteria and viruses in the tank in contact with the photocatalyst. The organic substance in water is decomposed, and the organic substance is decomposed into carbon dioxide and water by this decomposition action, so that the water in the tank is effectively purified.

  At this time, since the titanium oxide (66) is a fine powder, it can maximize the surface area to receive ultraviolet rays, obtain a highly effective bactericidal action, and excited titanium oxide powder (66). Since circulates without stopping in water, its sterilizing effect is further increased.

  The photocatalyst material is not limited to titanium oxide as described above, and may be other photocatalyst materials. Even if the photocatalyst material is not powder, a large number of granular materials such as ceramic coated on the inner surface of the tank or coated with a photocatalyst paint on the surface are submerged In addition to the method of using an ultraviolet lamp or LED as a light source, the irradiation of ultraviolet rays may be configured to excite the photocatalyst with ultraviolet rays generated by high voltage discharge.

  The water stored in the sterilization tank (65) is sterilized by the photocatalyst (66), and then circulated having an outlet at the bottom of the outer wall of the sterilization tank (65) close to the ultraviolet lamp (67). The contactor (9) is refluxed by a pipe (56) and a pump (59), and is again brought into contact with air to be purified to contribute to the adsorption of bacteria and viruses.

  When the water level of the sterilization tank (65) fluctuates, this liquid level is detected by the float switch (60). When the water level drops, new water is replenished from a separately installed water tank (not shown) When it becomes higher than the above, the device is stopped for safety.

  According to the above air sterilization and purification apparatus, air containing bacteria and viruses floating in hospitals and the like and water are mixed to adsorb bacteria to the water, and further, air and bacteria are separated by the gas-liquid separator. Air that has been separated and separated from the aqueous liquid is released to the outside, and bacteria and harmful fine particles adsorbed on the water can be sterilized in the sterilization tank.

  And as above-mentioned, this invention can form the gas-liquid separation apparatus (10) which has the advanced gas-liquid separation performance which is not in the past with a simple structure and is compact, and it is not necessary to use the conventional filtration filter. Therefore, the cost can be reduced and the maintenance can be simplified. Further, since it is an adhering and collecting operation with a liquid, it is possible to collect it regardless of the size and type of dust particles.

  Further, by using this gas-liquid separation device, a compact, inexpensive and high-performance exhaust gas purification device such as a diesel engine, an air purification device, or an air sterilization purification device can be obtained.

  The present invention relates to a gas-liquid separation device that separates PM in exhaust gas, dust in air, and the like from gas, and an exhaust gas purification device such as a diesel engine using the gas-liquid separation device, or an air purification device, or It can be used for an air sterilization and purification device.

1 is a piping route diagram of an exhaust gas purifying apparatus showing an embodiment of the present invention. It is a perspective view which shows the flow state of the exhaust gas and vegetable oil in the contactor of FIG. It is a perspective view showing one embodiment of the gas-liquid separation device of the present invention. It is sectional drawing from the side surface of FIG. It is sectional drawing from the front which follows the CC line of FIG. It is sectional drawing from the front which follows the DD line | wire of FIG. It is a system diagram which shows the example which applied the gas-liquid separation apparatus of FIG. 3 to the air cleaner. It is a system diagram which shows the example which applied the gas-liquid separation apparatus of FIG. 3 to the sterilization purification apparatus. It is a principle figure which shows the conventional cyclone type gas-liquid separation apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Disperser 3 Fuel filter 4 Fuel injection pump 5 Engine 6 Return pipe 7 Exhaust pipe 9 Contactor 10 Gas-liquid separator
11 Inlet 12 Outlet 13 Vegetable oil tank
14 Contact space 15 Inner tank 16 Intermediate tank
17 Outermost tank 15a, 16a, 17a Reservoir
15b, 16b, 17b Small through holes 16c, 17c Inner wall surface 17d Reflux tank
18 Heat exchanger 19 Oil cooler 20, 37, 39, 59 Pump
21 Outer cylinder member 21a Rear end face 22 Inlet
23 Small diameter cylinder 23a Opening 24 Guide piece
25 Guide channel 26 Shield plate 27, 28 Cylinder
29 Partition wall 30 Communicating tube 31 Transmission hole
32 Receiving tank 33 Outlet 35 Collection tank
36 Supply pipe 38 Oil filter 40 Demister
51 Air purifier 52, 62 Blower 53 Water tank
55 Settling tank 55a Inlet 56 Circulation pipe
57 Valve member 58 Cartridge filter
60 Float switch 65 Sterilization tank 66 Photocatalyst
67 UV lamp S Oil level sensor

Claims (7)

  Provided on the downstream side of the inlet formed at one end is an outer cylinder member formed with a small-diameter cylinder that applies a rotational force to the gas-liquid mixture gas to be purified, and a plurality of cylinder members are provided adjacent to the downstream side of the outer cylinder member. A cylinder having a diameter smaller than that of the cylinders so as to communicate between the cylinders, a liquid receiving portion is installed below the plurality of cylinders, and an outermost part of the cylinders is disposed. A gas-liquid separator comprising a gas outlet on the downstream side.   A guide piece provided with a plurality of openings on a circumferential surface forming a small-diameter cylinder that shields the opening on the inflow side, and extending outwardly from the opening end in an arc shape so as to contact the inner surface side of the outer cylinder member By applying a rotational force to the purification target gas-liquid mixed gas that has flowed into the small-diameter cylinder from the outer cylinder portion, the gas-liquid is separated by the centrifugal force when the vortex flows into the cylindrical body, The gas-liquid separator according to claim 1.   2. The gas-liquid separation device according to claim 1, wherein a plurality of arranged cylindrical bodies are partitioned by a partition wall, and a central portion of the partition wall is penetrated by a communication tube having a small diameter.   A permeation hole is provided in the lower surface of the cylindrical body located before and after the communicating cylinder, and the permeation hole is communicated with the liquid receiving part so that the liquid separated by the vortex generated in the cylindrical part is dropped to the liquid receiving part. The gas-liquid separation device according to claim 1, wherein   A contactor introduced with oil and fat such as vegetable oil and brought into contact with the inflowing exhaust gas, and the oil and fat adsorbing exhaust fine particles from the contactor flowed into the gas-liquid separator according to claim 1 and separated from the exhaust gas. An exhaust gas purifying device such as a diesel engine.   2. A contactor connected to an air flow passage to introduce a liquid material such as water into contact with the inflowing air, and the liquid material adsorbing dust or the like from the contactor flows into the gas-liquid separator according to claim 1. An air cleaning device characterized by being separated from air. The gas-liquid separation device according to claim 1, wherein the contactor is connected to the air flow passage and introduces an adsorbing liquid such as water into contact with the inflowing air, and the adsorbing liquid adsorbing bacteria or viruses from the contactor. An air sterilizing and purifying apparatus characterized in that it is allowed to flow into the air and separated from the air to discharge the purified air and introduce an adsorbed liquid into the sterilizing tank to sterilize.

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