JP2005081386A - Treating method and treating device for gas can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a treating method and a treating device for a gas can, which securely prevents explosion during treatment and further enable the device to be miniaturized. <P>SOLUTION: The device has a container 110 equipped with a can crushing machine 200 for crushing a gas can 10, and has a fan 130 and a vacuum pump 120 for decompressing the inside of the container. In the method, a gas can 10 is fed into the container 110, and a cover 111 and a hatch 112 are closed. Then, the inside of the container 110 is decompressed by the vacuum pump 120. By the decompression, the amount of oxygen in the container 110 is decreased so that explosion caused by igniting residual gas is prevented even if sparks are generated when crushing the can by the can crushing machine 200. The treating device consists of a container 110, a vacuum pump 120, a fan 130, the others of pipelines and valves, and a controller, so that the device may be transferred on an ordinary pallet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for crushing and treating a discarded gas can such as an aerosol can or a spray can.

  Aerosol cans and spray cans that use flammable gas such as liquefied petroleum gas as jetting gas to inject the contents of cans are used in various applications. These gas cans are disposed of when they are used, but some can be disposed with some gas or liquid remaining inside, and if they are incinerated or compressed, they can cause an explosion or explosion. There is.

  Therefore, conventionally, in the waste treatment center, the collected gas can is put into the treatment device, and the gas cans and the liquid matter inside are pierced on the wall surface of the gas can with the spike pin of the rotating roller arranged in the treatment device. By discharging or cutting the gas can with a rotary blade such as a shredder, the internal gas or liquid is discharged, and the residue is compressed.

  However, in this case, when the gas can is put into the processing apparatus, air also flows in. In addition, the gas in the gas can is mostly propane or butane, which burns very well. For this reason, there is a risk of ignition and explosion due to sparks generated when a hole is formed in the can with a spike pin of a rotating roller or when the can is cut with a rotating blade such as a shredder.

  On the other hand, in Patent Document 1 (Japanese Patent Laid-Open No. Sho 52-86272) and Patent Document 2 (Japanese Patent Laid-Open No. Hei 6-79188), a spray can is continuously supplied in water and fractured while immersed in water. The processing apparatus which collect | recovers an inner solution and gas continuously is proposed. The gas is collected in a predetermined room through water and collected. The inner solution is absorbed or miscible in water.

  Moreover, it replaces with processing in water and there also exists the method of filling and processing inert gas, such as nitrogen gas. However, since this method requires a large amount of inert gas, in Patent Document 3 (Japanese Patent Laid-Open No. 10-43619), a sensor for detecting combustible gas is provided in the pulverizer, and the sensor detects the combustible gas. Only when this is done, an inert gas such as water vapor or nitrogen gas is blown into the pulverizer. As a result, sparks generated when the gas cans are pulverized can prevent explosions and at the same time reduce the consumption of inert gas.

  Moreover, in patent document 4 (Unexamined-Japanese-Patent No. 2000-61344) and patent document 5 (Unexamined-Japanese-Patent No. 2000-61345), a processor is divided | segmented into several chambers, and it fills with inert gas for every room as needed. By doing so, the consumption of the inert gas is suppressed.

  However, the thing which damages a gas can underwater like the said patent documents 1 and 2 requires a large sized installation. Gases other than water-soluble gases can be recovered, but since solutions and the like are miscible with water, wastewater treatment becomes a problem.

  In addition, those using an inert gas as in Patent Documents 3, 4, and 5 require a boiler, which increases the size of the apparatus. Also, those using nitrogen gas require a large amount of nitrogen cylinders, and the apparatus becomes larger.

JP 52-86272 A JP-A-6-79188 JP 10-43619 A JP 2000-61344 A JP 2000-61345 A

  The present invention has been conceived from the above facts, and an object of the present invention is to provide a gas can processing method and apparatus that can reliably prevent explosion during processing and that can be downsized.

  The method for treating a gas can according to the first invention of the present application that achieves the above object includes a step of introducing the gas can into the container, a step of sealing the container and depressurizing the inside of the container with a decompression means, The gas can is crushed in a container to release the residual gas inside, and the residual gas in the container is discharged to the outside by the decompression means.

  In the gas can processing method according to the second invention of the present application, before and after the step of discharging the residual gas in the container to the outside by the decompression means, the residual gas in the container is allowed to pass through the solvent into the residual gas. It is characterized by providing a step of capturing the contained mist-like liquid material.

  In the gas can processing method of the third invention of the present application, when the gas can is crushed in the decompressed container to release the residual gas inside, the liquid material remaining in the gas can is taken out of the container. It has the process to discharge | emit.

  According to a fourth aspect of the present invention, there is provided a method for treating a gas can, wherein the exhaust gas generated by oxidizing a combustible material is fed into a container, and the residual gas in the container is discharged to the outside by the decompression means. And a step of returning the inside to atmospheric pressure.

  A gas can processing apparatus according to a fifth aspect of the present invention that achieves the above object is characterized by comprising a container provided with a can crusher that crushes the gas can and a decompression means for decompressing the inside of the container.

  A gas can processing apparatus according to a sixth invention of the present application is characterized in that the pressure reducing means has a vacuum pump and a combustion chamber for burning the gas discharged from the container is provided.

  According to a seventh aspect of the present invention, the gas can processing apparatus includes a first tank on the suction side or the discharge side of the vacuum pump, and captures the liquid in the gas can in the first tank and the container. When the solvent is added and the gas in the container is decompressed, the solvent in the first tank is passed.

  A gas can processing apparatus according to an eighth invention of the present application is characterized in that a liquid extraction tank for taking out a liquid material remaining in the gas can is provided.

  A gas can processing apparatus according to a ninth invention of the present application divides the inside of the container into a hopper portion for charging the gas can, a can processing portion for crushing the gas can, and a can removing portion for taking out the crushed gas can. A plurality of partition walls are provided, an opening is formed in each partition wall to communicate with both sides of the partition wall, a lid for opening and closing the opening is provided, and the decompression means can independently decompress each part divided by the partition wall. It is characterized by that.

  A gas can processing apparatus according to a tenth aspect of the present invention is characterized in that an auxiliary container capable of circulating the gas in the container is provided, and an oxidizer is provided in the auxiliary container.

  In the gas can processing method according to the first invention of the present application, since the inside of the container is decompressed and the oxygen concentration is lowered, even if a spark occurs when the gas can is crushed, the residual gas is ignited and explodes. This can be prevented. Moreover, since the inside of the container is only decompressed with a vacuum pump or the like, the apparatus can be miniaturized.

  In the treatment method according to the second invention of the present application, since liquids such as paint and insecticide remaining in the gas can are captured by passing a solvent, generation of toxic gas when burned can be prevented. In addition, the load on the decompression means can be reduced.

  In the third invention of the present application, various liquid substances remaining in the gas can are discharged out of the container. Most of these liquid substances are volatile, and after crushing the gas can, when the pressure in the container is reduced, the liquid substance evaporates and a large amount of gas is generated. For this reason, a large load is applied to the decompression means. When burning gas, it takes a long time. Therefore, by discharging the liquid material out of the container, the load on the decompression means can be reduced and the processing time can be shortened.

  According to the fourth invention of the present application, when the gas can treatment is finished or nearing the end, the combustible material is oxidized by combustion or the like elsewhere, and the generated exhaust gas is supplied to the container to return to the atmospheric pressure. Open the container safely and take out the crushed can.

  Since the gas can processing apparatus according to the fifth invention of the present application is composed of only a container and a decompression means such as a vacuum pump, the apparatus can be miniaturized.

  The gas can processing apparatus according to the sixth invention of the present application can also process the combustible gas by incinerating the combustible gas generated from the gas can.

  In the seventh invention of the present application, the liquid substance remaining in the gas can is discharged out of the container, thereby suppressing the liquid substance from evaporating in the container. When the liquid material evaporates, the load on the decompression means is increased and the combustion time becomes longer, so that a processing time is required. On the other hand, since the liquid material is discharged out of the container in a liquid state, the processing time can be shortened.

  In the gas can processing apparatus according to the eighth invention of the present application, the liquid substance remaining in the gas can and mist-like can be captured by the solvent in the first tank. The load applied to the decompression device can be reduced. Further, it is possible to prevent burning of substances that generate toxic gases.

  The gas can processing apparatus according to the ninth invention of the present application divides a hopper portion for charging the gas can, a can processing portion for crushing the gas can, and a can take-out portion for taking out the crushed gas can with a partition wall, and independently. Since the pressure can be reduced, continuous operation is possible.

  In the gas can processing apparatus according to the tenth invention of the present application, when the gas can processing is completed, the combustible material such as combustible gas is burned in the auxiliary container, and the generated exhaust gas is supplied to the container and returned to the atmospheric pressure. Therefore, it is possible to take out the crushed can safely from the container without risk of explosion.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a gas can processing apparatus according to the present invention. As shown in the figure, a gas can processing apparatus 100 according to the present invention includes a container 110 into which a gas can is charged, a vacuum pump 120 for decompressing the inside of the container 110, and a sub tank provided downstream of the vacuum pump 120. 121 and a fan 130 connected to the container 110 by a pipe line 131 different from the vacuum pump 120, a surge tank 140, and a combustion chamber 150 connected to the downstream side are mainly configured.

  In the container 110, a can crusher 200 is fitted, and there is a lid 111 for inserting a gas can on the top, and a hatch 112 for taking out the crushed gas can on the bottom. A drain pipe 113 is connected to the bottom of the container 110, and a drain valve 114 is provided in the pipe 113. One or a plurality of gas sensors 115 for detecting a predetermined type of gas and a pressure gauge 116 for measuring the pressure in the container 110 are connected to the upper side of the container 110.

  A valve 132 is connected to a pipe line 131 from the container 110 to the fan 130, and a valve 124 is provided to a bypass pipe line 123 connecting the middle of the pipe line 122 from the container 110 to the vacuum pump 120 and the sub tank 121. ing. Further, the sub tank 121 and the fan 130 are connected by a branch pipe 125, and a valve 126 is provided in the middle. Further, a valve 127 is provided in the pipe line 129 from the sub tank 121 to the surge tank 140.

  In addition to the above configuration, there is a control device using a sequencer (not shown), which controls the entire processing device. Therefore, all the valves from the valve 132 to the valve 127 are electromagnetic valves that are opened and closed by electrical signals, and the detection results of the gas sensor 115 and the pressure gauge 116 are transmitted to the control device as electrical signals. Therefore, the control device can automatically perform the opening / closing operation of each valve from the operation and stop of the vacuum pump 120 and the fan 130 in accordance with a program installed in advance in the sequencer.

  The container 110 of the present invention has a capacity of about 500 liters, but the other parts are small. Therefore, the container 110, the vacuum pump 120, the sub tank 121, the fan 130, and the control device (not shown) can be mounted on one base 101, and the surge tank 140 and the combustion chamber 150 can be mounted on another base 102. The bases 101 and 102 can be sized on a pallet having a normal size (1,100 mm × 1,100 mm). If the combustion chamber 150 is not provided, the apparatus can be mounted on two pallets even if the combustion chamber 150 is placed on one pallet. Therefore, the apparatus can be loaded on a truck and moved to a desired place. It becomes possible.

  This completes the description of the configuration of the apparatus. Next, a gas can processing method will be described with reference to FIGS. As an initial state, all of the valve 132, the valve 124, the valve 126, the valve 127, and the drain valve 114 are closed. The lid 111 is opened and the discarded gas can 10 is put into the container 110. The gas can 10 is placed on a guide plate 201 provided above the can crusher 200. If the can crusher 200 is open, the gas can 10 enters, but the gas can 10 on the guide plate 201 is in a state where it cannot pass through the can crusher 200. When the space above the guide plate 201 is filled with the gas can 10, the lid 111 is closed. At the same time, the hatch 112 is also closed. As a result, the container 110 is blocked from the outside. The gas cans 10 are all depicted as having the same diameter in the figure, but in reality, those having various diameters and lengths are used.

  In FIG. 1, the valve 132 is opened and the fan 130 is operated. Then, the air in the container 110 flows in the direction of the arrow, and the inside of the container 110 is depressurized by the suction force of the fan 130. Since the fan 130 is much larger than the discharge amount of the vacuum pump 120, the inside of the container 110 can be reduced to a low pressure in a short time.

  When the pressure reduction by the fan 130 reaches the limit, the valve 132 is closed and the valve 126 is opened, and the vacuum pump 120 is operated. The valve 124 remains closed. 2, the air in the container 110 passes through the vacuum pump 120, passes through the valve 126, is forcibly exhausted from the fan 130 to the atmosphere, and the inside of the container 110 is decompressed. The degree of depressurization is a pressure that can be maintained at an oxygen concentration that does not cause an explosion even when a combustible gas is ejected from the gas can 10, and is approximately −400 to 500 mmHg. The reduced pressure state is detected by the pressure gauge 116 one by one. In this embodiment, the initial pressure reduction is performed by the fan 130. However, the pressure reduction may be performed directly by the vacuum pump 120 without going through this process.

  When the pressure inside the container 110 is reduced to a predetermined pressure, the vacuum pump 120 is stopped, all of the valves 132, 124, 126, and 127 are closed, and the pressure inside the container 110 is lowered to the predetermined pressure. Check.

  When it is confirmed that the pressure has dropped, the can crusher 200 is operated. The can crusher 200 punches and crushes the gas cans 10 one by one or several at a time and drops them under the container 110. At this time, the gas remaining from the gas can 10 is ejected, and the liquid material flows out. The liquid material drops and accumulates at the bottom of the container 110. When the gas can 10 is crushed, sparks may be generated, but the container 110 is in a low oxygen state and therefore does not explode.

  When the pressure in the container 110 increases due to gas injection, only the valve 127 is opened and the vacuum pump 120 is operated. The combustible gas in the container 110 flows as shown by the arrow in FIG. 3, temporarily accumulates in the surge tank 140, is sent to the combustion chamber 150, and is burned.

  Some gas cans 10 use chlorofluorocarbon as an injection gas. This chlorofluorocarbon gas generates dioxins when burned. Therefore, in this embodiment, the gas sensor 115 is provided with a gas sensor for chlorofluorocarbon. When the gas sensor 115 detects the chlorofluorocarbon gas, as shown in FIG. 4, the valve 127 is closed, the valve 126 is opened, and the fan 130 is rotated. Thus, the chlorofluorocarbon gas can be discharged from the fan 130 without burning.

  By the way, after the gas sensor 115 detects the chlorofluorocarbon gas, it takes some time to close the valve 127 and open the valve 126. Therefore, the chlorofluorocarbon gas may flow into the combustion chamber 150. As a countermeasure, the sub-tank 121 is provided in the embodiment of the present invention. The gas sent out from the vacuum pump 120 once accumulates in the sub tank 121, passes through the valve 127, and proceeds to the combustion chamber 150. That is, it stays in the sub tank 121 temporarily. Therefore, by closing the valve 127 and opening the valve 126 within the remaining time, it is possible to prevent the chlorofluorocarbon gas from entering the combustion chamber 150. The above is an example of chlorofluorocarbon, but the same operation can be performed for other gases.

  When all of the charged gas cans 10 are crushed and there is no unprocessed gas can 10 in the container 110, supply of new gas due to destruction of the gas can 10 stops, and the pressure of the pressure gauge 116 begins to drop. Therefore, an appropriate pressure is set, and when the pressure is lowered to the set pressure, the apparatus is stopped because the processing is finished. Then, the atmosphere is introduced into the container 110 to atmospheric pressure, the hatch 112 is opened, and the crushed gas can 10 is taken out. If necessary, the drain valve 114 is opened, and the liquid material in the gas can 10 accumulated in the container 110 is discharged. By repeating the above, the discarded gas can 10 can be safely processed.

  FIG. 5 is a diagram showing the configuration of the can crusher 200, and FIG. 6 is a sectional view taken along the line VI-VI in FIG. The can crusher 200 has a guide plate 201 on the upper side, and a fixed plate 203, a pressure contact plate 204, and a perforated plate 205 below the guide plate 201.

  The guide plate 201 has a gentle slope descending toward the center, and the opening 202 at the center of the guide plate 201 is slightly larger than the gas can 10. The fixing plate 203 has sufficient strength to withstand the force of crushing the gas can 10 and is fixed in the container 110 by an appropriate method. The pressure contact plate 204 and the perforated plate 205 are rotatable about a common rotation shaft 206 at the lower end.

  In the perforated plate 205, several perforated pins 207 are implanted, and the press contact plate 204 is formed with a hole 204a through which the perforated pins 207 pass. Further, the perforated plate 205 is engaged with the rod 210 a of the hydraulic cylinder 210, and the proximal end of the hydraulic cylinder 210 is fixed to the container 110.

  The rotating shaft 206 is coupled to a rod 215a of another hydraulic cylinder 215, and the lower ends of the pressure contact plate 204 and the perforated plate 205 are movable by the advancement and retraction of the rod 215a of the hydraulic cylinder 215. These hydraulic cylinders 210 and 215 are also controlled by the control device.

  When the rod 210a of the hydraulic cylinder 210 is retracted and the pressure contact plate 204 and the perforated plate 205 are in the state of FIG. 5, one gas can 10 falls from the gap between the guide plates 201 and the gap between the fixed plate 203 and the pressure contact plate 204 is reached. to go into. Since this gap becomes narrower as it goes down, the gas can 10 stops above the gap. Next, the hydraulic cylinder 210 is actuated to extend the rod 210a. First, the perforated plate 205 is rotated clockwise to overlap the pressure contact plate 204. At this time, each perforation pin 207 passes through the hole 204a of the press contact plate 204 and protrudes to the opposite side. When rotating further in the clockwise direction in this state, as shown in FIG. 7, the piercing pin 207 pierces the gas can 10 and the gas and residual liquid remaining in the gas can 10 are ejected. Although the gas can 10 is crushed as shown in 10a, it is not in a completely crushed state but in a state of being crushed by about half.

  From this state, the rod 210a of the hydraulic cylinder 210 is retracted. Then, the press contact plate 204 and the perforated plate 205 rotate counterclockwise while being overlapped. Then, when the press contact plate 204 comes into contact with the stopper 218 shown in FIG. 5, the rotation of the press contact plate 204 is stopped. The perforated plate 205 further rotates counterclockwise, and stops in a state where the perforated pin 207 comes out of the gas can 10a and also comes out of the press contact plate 204.

  Then, the gas can 10 a crushed by about half falls to an intermediate position in the gap between the press contact plate 204 and the fixed plate 203. A new gas can 10 falls above the gap. When the hydraulic cylinder 210 is activated and the state shown in FIG. 7 is reached, the new gas can 10 is crushed as indicated by 10a, and the previous gas can 10a is further crushed as indicated by 10b. Next, returning to FIG. 5, when a new gas can 10 enters the gap and is crushed as shown in FIG. 7, the first gas can is crushed flat as shown by 10 c, and passes through the can crusher 200 and passes through the container 110. Fall down. The second gas can looks like 10b, and the third gas can looks like 10a. By repeating the above, the gas can 10 can be crushed into a flat state.

  The gas can 10 is often made of a thin steel plate, but there are also gas cans that are made smaller. This type cannot be pierced with the piercing pin 207 and cannot be crushed. If left as it is, the device may be damaged. Therefore, in the embodiment of the present invention, although not shown, a sensor for detecting the position of the perforated plate 205 is provided. Then, when the rated pressure is applied to the hydraulic cylinder 210, if the perforated plate 205 does not rotate to a predetermined position, it is determined that the gas can 10 cannot be crushed, and the hydraulic cylinder 215 is operated. Then, the rod 215a is retracted, and the rotation shaft 206 is moved as shown in FIG. As a result, the gas can 10 can pass through the gap and fall below the container 110, thereby preventing the apparatus from being damaged.

  In the above-described embodiment, the gas cans 10 are crushed one by one, but if the width of the perforated plate 205 is increased to increase the number of perforated pins 207, a plurality of gas cans 10 are arranged in a row at a time. Can be drilled and crushed. In addition, the can crusher 200 installed in the container 110 is not limited to that of the above-described embodiment, and it goes without saying that various other can crushers can be used.

  FIG. 9 is a diagram showing the configuration of the second embodiment of the present invention. Components common to the embodiment shown in FIG. 1 are denoted by the same reference numerals, and different points will be mainly described. In this embodiment, the first tank 160 is provided on the upstream side of the vacuum pump 120 as the pressure reducing means, and the second tank 170 is provided on the downstream side.

  In the gas can 10, various liquid materials such as paints, pesticides, hair styling agents, and the like left over remain. These liquid materials include various types of materials ranging from a free flowing liquid having a low viscosity to a highly viscous jelly. When the gas can 10 is crushed by the can crusher 200, these liquid substances flow out, but some of these liquid substances become mist in the container 110, sucked by the vacuum pump 120, and the combustion chamber 150. To be burned. However, many of these generate toxic gases by burning.

  Therefore, in this embodiment, a small amount of the solvent A is introduced into the bottom of the container 110. The liquid material flowing out from the crushed gas can 10 reaches the bottom of the container 110 and mixes with the solvent A. As the solvent A, those capable of trapping these various liquid materials are used. Here, “capture” means that the liquid material is melted in the solvent A, the liquid material mixed by the viscosity of the solvent A is confined in a large or small soft lump (or granular), or floated in the air in the form of a mist. It means to liquefy the liquid. As such a solvent A, various solvents including water can be used, but in this embodiment, waste oil of automobile engine oil is used. Since the waste oil is viscous and easily traps the mixed liquid, and is flammable, subsequent processing can be facilitated.

  The first tank 160 is also filled with the same solvent A as the container 110. And the front-end | tip of the pipe line 161 from the container 110 is made to penetrate in this solvent A. The pipe 161 is provided with a valve 162 operated by the sequencer.

  The first tank 160 has a pipe line 128 that opens to the space above the solvent A, and this pipe line 128 is connected to the suction side of the vacuum pump 120. Therefore, when the vacuum pump 120 is activated, the gas in the container 110 passes through the pipe line 161, passes through the solvent A, and is sucked into the vacuum pump 120 by the pipe line 128.

  Various liquid substances remaining in the gas can 10 are mixed in the solvent A in the container 110, but a part thereof is mist and floats in the container. By passing the floating mist through the solvent A, the solvent is melted in the solvent A, or is made into a soft lump (or granular) and confined with the viscosity of the solvent A, or is liquefied and dissolved in the solvent A. A can be captured as a separated liquid.

  Thus, the residual liquid substance in the container 110 that flows out when the gas can 10 is crushed is almost captured by the solvent A, and the load applied to the vacuum pump 120 is only propane gas or butane gas that cannot be captured by the solvent A. Therefore, in the embodiment of FIG. 9, the load applied to the vacuum pump 120 can be greatly reduced. Further, the gas combusted in the combustion chamber 150 is only one that does not generate toxic gas even when propane or butane is combusted. Further, the amount of gas to be burned is greatly reduced, and the combustion chamber 150 can be made a small burner. As a result, in this embodiment, the entire processing apparatus 100 for the gas can 10 can be configured on one base 101 and placed on one pallet.

  In this embodiment, a second tank 170 is further provided on the downstream side of the vacuum pump 120. The second tank 170 is filled with the solvent B. Here, water is used as the solvent B. And the front-end | tip of the pipe line 171 connected to the discharge side of the vacuum pump 120 is made to enter the solvent B, and the valve 172 is provided in the pipe line 171. A pipe 141 is opened above the solvent B in the second tank 170, and a valve 142 is provided in the pipe 141 and connected to the surge tank 140. That is, the gas discharged from the vacuum pump 120 passes through the solvent B and is sent into the surge tank 140. Thus, by using water as the solvent B and allowing the gas in the container 110 to pass through the solvent B, the odor contained in the combustible gas can be removed. Alternatively, a plurality of first tanks 160 for containing solvent A and a plurality of second tanks 170 for containing solvent B may be provided to capture liquid substances and odors in multiple stages. As the solvent B, activated carbon can be used as long as the odor is simply removed.

  In this embodiment, the first tank 160 and the second tank 170 are arranged upstream and downstream of the vacuum pump 120. However, both tanks may be arranged together on the suction side or the discharge side of the vacuum pump 120. . If the first tank 160 is provided on the suction side of the vacuum pump 120 as shown in the drawing, it is possible to avoid the vacuum pump 120 from directly sucking the mist-like liquid substance floating in the container 110.

  Further, in this embodiment, the solvent A can be incinerated in a separate incinerator to prevent generation of toxic gas, and both the treatment of waste oil and the treatment of the residual liquid in the gas can 10 can be performed. Can be done together.

  FIG. 10 is a diagram showing the configuration of the third embodiment of the present invention. In this embodiment, the space in the container 110 is divided into three spaces: a hopper part X for charging the gas can 10, a can processing part Y for crushing the gas can 10, and a can removing part Z for taking out the crushed gas can 10. It is an example divided into. The guide plate 201 also serves as a partition partitioning the hopper portion X and the can processing portion Y. A partition wall 224 is provided between the can processing unit Y and the can removal unit Z. A lid 223 is attached to the opening 202 of the guide plate 201, and a lid 226 is attached to the opening 225 of the partition wall 224. The lids 223 and 226 are opened and closed by a solenoid (not shown) or the like, and the solenoid is operated by the sequencer.

  A second vacuum pump 180 is provided as a pressure reducing means, and is connected to the hopper portion X by a pipe line 181 and a valve 182 and to the can take-out part Z by a pipe line 183 and a valve 184. The pipe line 161 and the valve 162 are connected to the can processing unit Y.

  The operation of this embodiment will be described. The lid 223 closes the opening 202, and the lid 226 keeps the opening 225 closed. The vacuum pump 120 starts depressurization in the can processing unit Y. The lid 111 is opened and the gas can 10 is put into the hopper part X. When the charging is completed, the lid 111 is closed, the second vacuum pump 180 is operated, the valves 182 and 184 are opened, and the hopper part X and the can take-out part Z are decompressed. When the pressures in the hopper part X, the can processing part Y, and the can take-out part Z become substantially the same, the second vacuum pump 180 is stopped, the valves 182 and 184 are closed, the lid 223, the lid 226, open.

  The gas can 10 in the hopper section X enters the can processing section Y, and the can processing is started (smashed). Then, the crushed gas can 10 falls into the can outlet Z. In addition, in the can take-out part Z, a mesh container such as a basket is placed above the solvent A so that the crushed gas can 10 does not fall into the solvent A. Moreover, since it is a mesh, even after falling into the container, the liquid material inside can be dropped into the solvent A and captured.

  When the gas can 10 in the hopper portion X is exhausted, the lid 223 is closed, only the inside of the hopper portion X is set to atmospheric pressure, the lid 111 is opened, and the gas can 10 to be newly processed is charged. When the inside of the can take-out part Z becomes full, the lid 226 is closed, only the inside of the can take-out part Z is brought to atmospheric pressure, the hatch 112 is opened, and the crushed gas can 10 is taken out. When the gas can 10 is put into the hopper part X and when the can is taken out from the hatch 112, the vacuum pump 120 can continue to operate, and the operation of collecting the gas generated in the can processing part Y can be continued. Therefore, in this embodiment, continuous operation can be performed.

  In addition, although the 2nd vacuum pump 180 was added in this Example, it is good also as a structure which pressure-reduces only one vacuum pump 120, A vacuum pump is provided in each of the hopper part X, the can processing part Y, and the can taking-out part Z. May be attached. Moreover, a conveyor can be connected to the hopper part X, the lid | cover 111 can be opened, and the gas can 10 can be thrown in from a conveyor.

  FIG. 11 is a diagram showing the configuration of the fourth embodiment of the present invention. In this embodiment, an auxiliary container 190 is provided, and the container 110 and the auxiliary container 190 are connected by a pipe line 191, a water tank 192, and a pipe line 193. The auxiliary container 190 has an oxidizer 190 a made of a filament, and is connected to a combustible gas cylinder 196 such as propane gas or butane gas by a pipe line 195 that is opened and closed by a valve 194. A pipe line 197 from the auxiliary container 190 is connected to the second tank 170 via the valve 198, but is branched before the valve 198 and connected to the pipe line 199. The pipe line 199 is opened to the atmosphere through a valve 199a.

  The pipe line 197 branches between the valve 198 and the second tank 170, and the branched pipe line 141 is connected to the fan 230. A valve 142 is provided in the pipe line 141. The fan 230 and the container 110 are connected by a pipe 231, and the pipe 231 is opened and closed by a valve 232. A small combustion chamber 150 a is connected to the outlet of the fan 230. The combustion chamber 150 a can exhaust the gas from the fan 230 by burning it or exhaust it without burning it. The solvent A in the container 110 is discharged through the conduit 113 and the drain valve 114.

  A fan 240 is connected to the container 110 so that outside air can be fed into the container 110. Each valve, fan, and the like are controlled by a sequencer as in the above-described embodiment.

  FIG. 12 is a diagram illustrating an air flow when the combustible gas in the container 110 is discharged. Here, the valve 162, the valve 172, and the valve 142 are opened, and the other valves are closed. When the vacuum pump 120 is operated in this state, the combustible gas in the container 110 contains the pipe 161, the solvent A in the first tank 160, the pipe 128, the vacuum pump 120, the pipe 171, the pipe 141, and the fan 230. , The combustion chamber 150a is reached in sequence, and incinerated. Alternatively, the combustion chamber 150a can be discharged as it is without being burned.

  When the fire in the combustion chamber 150a is extinguished, or when a concentration meter of propane gas or butane gas is installed in the container 110 and the concentration of the combustible gas shown in these concentration meters falls below a preset concentration It is possible to determine that the process has been completed by either.

  In FIG. 12, when combustible gas in the container 110 is incinerated, the fan 240 may be operated to send outside air into the container 110. Then, the valve 232 is opened, and the combustible gas in the container 110 is also sent to the fan 230 from the conduit 231. In this case, the fire in the combustion chamber 150a is not extinguished due to lack of oxygen, but is extinguished when there is no combustible gas. Therefore, almost all of the combustible gas in the container 110 can be incinerated.

  If the combustible gas contains a little gas other than methane gas and butane gas, there is a possibility that a toxic gas such as dioxin may be generated although it is a trace amount. Therefore, activated carbon can be used instead of the combustion chamber 150a. The combustible gas etc. which passed the solvent A and the solvent B are made to adsorb | suck to activated carbon.

  FIG. 13 is a diagram illustrating a flow of air or the like when combustible materials are burned in the auxiliary container 190 and exhaust gas is sent into the container 110. This operation is performed before the processing of the gas can 10 in the container 110 is completed and the hatched gas can 10 is removed by opening the hatch 112. That is, when the gas can 10 is crushed and the combustible gas in the container 110 is almost sucked by the vacuum pump 120, the pressure in the container 110 is about -200 mmHg. In this state, the hatch 112 cannot be opened, so the inside of the container 110 needs to be returned to atmospheric pressure. When returning to atmospheric pressure, if air is introduced into the container 110 as it is, the combustible gas remaining in the container 110 may explode. Therefore, the exhaust gas in the auxiliary container 190 is sent into the container 110 to make it lack of oxygen and return to atmospheric pressure without the possibility of explosion.

  When the processing of the combustible gas in the container 110 is finished or approaches the end, first, the valves 162, 172, and 198 are opened, and the other valves are closed. When the vacuum pump 120 is operated in this state, the air in the container 110 passes through the pipe line 161, the first tank 160, the pipe line 128, the vacuum pump 120, the pipe line 171, the second tank 170, and the pipe line 197. Enter the auxiliary container 190. When the oxidizer 190 a in the auxiliary container 190 is energized and heated, the combustible gas in the container 110 burns in the auxiliary container 190. Then, the exhaust gas passes through the water tank 192 through the pipe 193 and returns to the container 110 through the pipe 191. The water tank 192 is for preventing a flame from blowing into the container 110. If the inside of the container 110 returns to atmospheric pressure by this operation, the gas can 10 that has been crushed by opening the hatch 112 can be taken out.

  If the inside of the container 110 does not return to the atmospheric pressure by the above operation, the valve 194 is opened, and the combustible gas is fed into the auxiliary container 190 from the combustible gas cylinder 196 through the pipe line 195. At the same time, the valve 199a is opened to introduce the atmosphere into the auxiliary container 190. As a result, the combustible gas burns in the auxiliary container 190. The combusted exhaust gas passes through the water tank 192 through the pipe 193 and returns to the container 110 through the pipe 191. At this time, the vacuum pump 120 may be stopped, but the air in the container 110 may be sent to the auxiliary container 190 by continuing the operation. Moreover, it is good also as a structure which provides a fan in the pipe line 199 as needed, and sends air in the auxiliary container 190 forcibly.

  In addition, although the filament was used in the said Example as the oxidation apparatus 190a, you may use the various oxidation catalyst currently used for platinum body warmers or disposable warmers.

  In the embodiment described above, when the gas can 10 is crushed in the container 110, the liquid material remaining in the gas can 10 is captured in the solvent A. However, most of these liquids are volatile and flammable. Therefore, when the pressure inside the container 110 is reduced, the liquid substance trapped in the solvent A is evaporated again and gasified. The vacuum pump 120 must suck the gasified liquid material, and takes a long time for processing. Moreover, when burning gas, combustion continues for a long time. As a result, the processing capacity decreases.

  FIG. 14 is a diagram illustrating the configuration of the fifth embodiment of the present invention in order to solve such a problem. In this embodiment, a liquid extraction tank 250 is added to the configuration of FIG. 11, the bottom of the container 110 is connected to the top of the liquid extraction tank 250 by a pipe 251, and a valve 252 is provided in the pipe 251. Solvent A is not contained in the container 110. The liquid extraction tank 250 and the pipe line 161 are connected by a pipe line 253, and a valve 254 is provided in the pipe line 253. Therefore, the inside of the liquid extraction tank 250 can be decompressed by the vacuum pump 120. The entire processing apparatus 100 is also small and can be sized to be placed on one base 101 and carried on a pallet of normal size.

  When the gas can 10 after the inside of the container 110 is depressurized is crushed, the liquid substance C remaining in the crushed gas can 10 accumulates at the bottom of the container 110. Therefore, when the gas can 10 starts to be crushed, the valve 162 is closed before the crushing is finished, the valves 252 and 254 are opened, and the vacuum pump 120 is operated. Then, the liquid substance C accumulated at the bottom of the container 110 is extracted into the liquid extraction tank 250. When the liquid substance C in the container 110 is almost removed, the valve 252 and the valve 254 are closed. Thus, the liquid material remaining in the gas can 10 can be recovered in the liquid extraction tank 250. The liquid extraction tank 250 is preferably detachable. This is because the liquid extraction tank 250 from which the liquid C has been recovered can be removed from the apparatus and incinerated with a well-equipped incineration facility.

  When the liquid C is sucked, the gas in the container 110 is also sucked, and this gas is trapped by the solvent A in the first tank 160 in the same manner as described with reference to FIG. The combustion chamber 150a is reached through 170 and burned.

  When the suction of the liquid C is completed, the valves 252 and 254 are closed, the valve 162 and the like are opened as shown in FIG. 12, and the inside of the container 110 is decompressed. Since there is no vaporized liquid in the container 110, the pressure in the container 110 can be reduced in a short time. Thereafter, as shown in FIG. 13, exhaust gas is sent to bring the inside of the container 110 to atmospheric pressure, or the fan 240 is operated to send air into the container 110 to bring the inside of the container 110 to atmospheric pressure. Alternatively, an inert gas such as steam or nitrogen gas may be sent in place of the fan 240.

It is a figure which shows the structure of the processing apparatus of the gas can by this invention. It is a figure which shows the flow of the air when decompressing the inside of a container prior to crushing a gas can. It is a figure which shows the flow of gas when crushing a gas can and guiding the gas which ejected to a combustion chamber. It is a figure which shows the gas flow when the gas unsuitable for combustion is contained in the gas which crushed the gas can and ejected. It is a figure which shows the structure of a can crusher. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. It is a figure which shows the state which crushes a gas can. It is a figure explaining the processing method when a gas can cannot be crushed. It is a figure which shows the structure of 2nd Example of this invention. It is a figure which shows the structure of 3rd Example of this invention, and is the example which divided the inside of a container into a hopper part, a can processing part, and a can extraction part. It is a figure which shows the structure of 4th Example of this invention. It is a figure which shows the flow of the air in the case of discharging the combustible gas in a container. It is a figure which shows the flow of air etc. when combustible material is burned in an auxiliary container and exhaust gas is sent into the container. It is a figure which shows the structure of 5th Example of this invention.

Explanation of symbols

10, 10a, 10b, 10c Gas can 100 Gas can processing device 110 Container 120 Vacuum pump 125 Branch pipe 130 Fan 150, 150a Combustion chamber 160 First tank 200 Can crusher 201 Guide plate (partition wall)
202 Opening 223 Lid 224 Partition 225 Opening 226 Lid 250 Liquid extraction tank A, B Solvent C Liquid X Hopper part Y Can processing part Z Can takeout part

Claims (10)

A step of introducing a gas can into the container, a step of sealing the container and depressurizing the inside of the container with decompression means, a step of crushing the gas can in the decompressed container and releasing the residual gas inside, and a container And a step of discharging the residual gas inside by the decompression means. Before and after the step of discharging the residual gas in the container to the outside by the decompression means, a step of passing the residual gas in the container through the solvent and capturing a mist-like liquid substance contained in the residual gas was provided. The method for treating a gas can according to claim 1. 3. The method according to claim 2, further comprising a step of discharging the liquid material remaining in the gas can to the outside when the gas can is crushed in the decompressed container to release the residual gas therein. Gas can processing method. A step of sending exhaust gas generated by oxidizing combustible material into the container and returning the inside of the container to atmospheric pressure after completion of the step of discharging the residual gas in the container to the outside by the decompression means. A method for treating a gas can according to any one of claims 1 to 3. An apparatus for treating a gas can, comprising: a container provided with a can crusher for crushing the gas can; and a decompression means for decompressing the inside of the container. 6. The gas can processing apparatus according to claim 5, wherein the decompression means includes a vacuum pump, and a combustion chamber for burning the gas discharged from the container is provided. A first tank is provided on the suction side or discharge side of the vacuum pump, a solvent for trapping the liquid substance in the gas can is placed in the first tank, and when the gas in the container is depressurized, The gas can processing apparatus according to claim 5, wherein the solvent passes through a solvent. The gas can processing apparatus according to any one of claims 5 to 7, further comprising a liquid extraction tank for taking out a liquid material remaining in the gas can. A plurality of partition walls are provided to divide the container into a hopper for charging gas cans, a can processing unit for smashing the gas cans, and a can take-out unit for taking out the crushed gas cans. 9. The method according to claim 5, wherein an opening that communicates both sides is formed, a lid that opens and closes the opening is provided, and the decompression means can decompress each part divided by the partition independently. The gas can processing apparatus according to claim 1. The gas can processing apparatus according to any one of claims 5 to 9, wherein an auxiliary container for oxidizing the combustible material is provided, and the exhaust gas generated in the auxiliary container is connected so as to be supplied into the container.

Images