Filling treatment method

Abstract

To provide a filling treatment method for a separation tank capable of preventing CO2 and nitrogen oxide from being released to the atmosphere.SOLUTION: A method for taking out and processing a filler from a separation tank arranged in a compressed pneumatic circuit and filled with at least an amine-containing oil adsorbent, adopts means formed of: a blocking step of removing the separation tank whose function is lowered at an installation facility from the compressed pneumatic circuit, and blocking an inflow hole and a discharge hole; a first transportation step of transporting the blocked separation tank from the installation facility to an exchange facility; a decomposition step of taking out the filler filled in the transported separation tank; a sealing step of sealing the filler taken out in the decomposition step in a sealed container; a second transportation step of transporting the filler sealed in the sealing step from the exchange facility to an incineration facility; and an incineration step of incinerating the transported filler at the incineration facility.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for treating a packing material filled in a separation tank, and more particularly to a method for taking out the packing material filled in a separation tank with a deteriorated drain purification function and performing incineration treatment on the packing material.

Background Art

[0002] In a compressed air pressure circuit, since the drain generated when removing foreign substances in the compressed air contains foreign substances such as oil, the drain is purified by passing through a separation tank for removing foreign substances and discharged to the outside. And, for a used separation tank that has reached the replacement time due to a pre-specified operation time, the deterioration state of the packing agent filled in the separation tank, etc., a method of requesting the product manufacturer to replace the corresponding separation tank is adopted.

[0003] The used separation tank is filled with the packing material that adsorbed foreign substances and CO2 contained in the drain, and the drain in which a large amount of gas such as CO2 is dissolved in proportion to the pressure according to Henry's law. There was a problem that CO2 was released into the atmosphere due to a decrease in the pressure applied to the packing material in the separation tank. In addition, there was also a problem that greenhouse gases such as nitrogen oxides were generated and released into the atmosphere during the process in which the amine provided as the packing material was decomposed by microorganisms such as nitrifying bacteria adsorbed to the packing material as foreign substances. Therefore, at the time of replacing the separation tank, there has been a demand for means capable of transferring and disposing of the packing material without releasing greenhouse gases such as CO2 and nitrogen oxides generated from the packing material into the atmosphere.

[0004] Therefore, in order to solve the above problems, the applicant of the present application has developed a method for replacing the stored items stored in the used oil-water separator, and has made a technical proposal described in Japanese Patent No. 4418872 (Patent Document 1). According to such a technical proposal, in the oil-water separator, a drain water leakage prevention means is arranged in the tank body in which the stored items are stored, and only the tank body is delivered to a predetermined location, so that the filling material can be replaced by a person with a certain technology, and excellent effects are achieved. However, according to the technical proposal described in Patent Document 1, although it is useful as a means for preventing the leakage of drain water from the tank, the sealing method for the filling material filled in the tank body is not particularly specified, and furthermore, there is no description about the treatment method of the filling material, so the above problems have not been solved yet.

[0005] Therefore, the applicant of the present application focused on the problem that when the filling material filled in the separation tank is transferred to the incineration facility, gas substances such as CO2 and nitrogen oxides are separated and released from the filling material. Under the idea of whether it is possible to transfer the filling material taken out from the used separation tank to the incineration facility in a state where the release of the gas substance to the outside air is completely prevented, the filling material taken out from the used separation tank is transferred to the incineration facility in a sealed state, and the CO2 generated during the incineration of the filling material is recovered at the incineration facility, thus developing a method for treating the filling material of the separation tank that can prevent the release of CO2 and nitrogen oxides to the atmosphere, and arriving at the proposal of the "filling material treatment method" according to the present invention.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] In view of the above problems, the present invention aims to provide a method for treating the packing material of a separation tank that can prevent the release of CO2 and nitrogen oxides into the atmosphere by transferring the packing material taken out from the used separation tank to an incineration facility in a sealed state and recovering the CO2 generated during the incineration of the packing material at the incineration facility.

Means for Solving the Problems

[0008] To solve the above problems, the present invention provides a method for taking out and treating the packing material from a separation tank disposed in a compressed air pressure circuit and filled with at least an amine oil adsorbent, the method comprising: a blocking step of removing a separation tank with reduced function from the compressed air pressure circuit and blocking the inflow hole and the discharge hole; a first transfer step of transferring the blocked separation tank from the installation facility to an exchange facility; a disassembling step of taking out the packing material filled in the transferred separation tank; a sealing step of sealing the packing material taken out in the disassembling step in a sealed container; a second transfer step of transferring the packing material sealed in the sealing step from the exchange facility to an incineration facility; and an incineration step of incinerating the transferred packing material at the incineration facility.

[0009] The present invention also employs a means comprising a CO2 recovery step of separating and recovering CO2 from the exhaust gas generated in the incineration step.

[0010] Furthermore, the present invention employs a means in which, in the second transfer step, the sealed container used for sealing the packing material is formed of biomass plastic.

Effects of the Invention

[0011] According to the packing treatment method of the present invention, for the packing in the separation tank filled with at least an amine-treated oil adsorbent, after being taken out in the decomposition step and until the incineration step is performed, it is treated in a sealed state by a sealed container. Therefore, even when the amine is decomposed by the microorganisms adsorbed on the amine-treated oil adsorbent and greenhouse gases such as N2O, which is a kind of nitrogen oxide, are generated, it will be transferred to the incineration facility without being released into the atmosphere, and it is possible to decompose the greenhouse gas by the high heat accompanying the incineration of the packing, and thus it has excellent effects such as this.

[0012] Further, according to the packing treatment method of the present invention, by providing a CO2 recovery step, the CO2 generated during the incineration process of the packing and the CO2 adsorbed on the packing are recovered in the incineration facility to prevent the release into the atmosphere, and it is also possible to store the recovered CO2 in a tank or the like and effectively utilize it, such as injecting it into depleted oil fields to recover the remaining crude oil in the oil fields, using it as industrial carbon dioxide gas, or using it for plant growth, etc., and thus it has excellent effects such as this.

[0013] And according to the packing treatment method of the present invention, since the sealed container used when sealing the packing is formed of biomass plastic, even if CO2 is generated by the incineration treatment, overall, the amount of CO2 will not increase, and as a result, it contributes to the reduction of greenhouse gases, and thus it has excellent effects such as this.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0015] The filling material treatment method 1 according to the present invention is characterized in that the filling material 20 filled in the used separation tank 17 is transferred to the incineration facility 32 while being in a sealed state. Hereinafter, an embodiment of the filling material treatment method 1 according to the present invention will be described with reference to the drawings.

[0016] Note that the filling material treatment method 1 according to the present invention is not limited to the embodiments described below, and can be appropriately changed within the scope of the technical idea of the present invention, that is, within the scope of shapes, dimensions, materials, etc. that can exhibit the same operational effects.

[0017] FIG. 1 is a flowchart showing the filling material treatment method 1 according to the present invention. FIG. 2 is an explanatory diagram showing an embodiment of the filling material treatment method 1 according to the present invention. FIG. 3 is an explanatory diagram showing an embodiment of the filling material treatment method 1 according to the present invention, where (a) is an explanatory diagram of the decomposition step 4 and the sealing step 6, and (b) is an explanatory diagram of the incineration step 8 and the CO2 recovery step 9. The filling material treatment method 1 according to the present invention is a treatment method for purifying the drain discharged from the compressed air pressure circuit 10 and for dealing with the deterioration of the filling material 20, and is mainly composed of a blocking step 2, a first transfer step 3, a decomposition step 4, a sealing step 6, a second transfer step 7, and an incineration step 8.

[0018] The compressed air pressure circuit 10 is installed in the installation facility 30 and supplies the compressed air generated by the compressor 11 to the utilization equipment connected to the subsequent stage. Depending on the usage mode of the utilization equipment, an air tank 12 for temporarily storing the compressed air, an air dryer 13 for reducing the temperature by drying the compressed air, and various devices such as a cyclone separator 14 for separating and removing foreign substances (hereinafter sometimes simply referred to as "foreign substances") such as oil mist and dust contained in the compressed air are arranged. There are no particular limitations on the types and numbers of the devices arranged in the compressed air pressure circuit 10, and they will be appropriately determined according to the purpose of using the compressed air and the utilization equipment. Naturally, pipes capable of supplying compressed air are provided between the compressor 11, each device, and the utilization equipment. At that time, water vapor contained in the compressed air adheres to and combines with the inner walls of each device, pipes, etc., generating drain water. According to Henry's law, a large amount of CO2 in the compressed air dissolves in the drain water under high-pressure conditions. Subsequently, the drain water generated at various locations in the compressed air pressure circuit 10 is appropriately discharged through the discharge pipe by the drain traps 15 provided in each device. However, since foreign substances removed from each device are also discharged in a state contained in the drain water, a separation tank 17 capable of separating and removing foreign substances and CO2 from the drain water is provided.

[0019] The separation tank 17 is a tank that separates and adsorbs foreign substances and CO2 from the drain water discharged from the compressed air pressure circuit 10 and flowing in through the discharge pipe, and then discharges it to the outside as clean drain water. The separation tank 17 is a cylindrical body having a hollow portion, with its top surface and bottom surface closed. The hollow portion is filled with a filler 20 capable of separating and adsorbing foreign substances and CO2 contained in the drain water. An inlet hole 18 for allowing the drain water to flow into the hollow portion from the bottom surface (lower part) and an outlet hole 19 for discharging the drain water from the hollow portion to the top surface (upper part) are respectively formed. Regarding the outer shape of the separation tank 17, there is no particular limitation as long as it is cylindrical, and a cylindrical shape or a polygonal cylindrical shape is conceivable. Also, there is no particular limitation on the constituent material, etc. of the separation tank 17, but it is preferable to use a transparent or translucent material such as reinforced plastic or glass for part or all of it so that the deterioration state of the adsorbent filled in the hollow portion can be visually confirmed.

[0020] The filler 20 separates and adsorbs foreign substances and CO2 contained in the drain water flowing into the separation tank 17 and is filled in the hollow portion of the separation tank 17. Regarding the material of the filler 20, various conventionally known materials capable of separating and adsorbing foreign substances and CO2 contained in the drain water can be applied, for example, materials such as activated carbon 27, zeolite 28, and amine-impregnated oil adsorbent 29 are conceivable. Also, a mode in which these materials are alternately laminated and filled to enhance the adsorption efficiency is also preferable. When adopting the mode of using the oil-absorbing amine adsorbent 29 as the adsorbent, in the chemical reaction by CO₂ adsorption, the amine changes to carbamic acid, and immediately further changes to ammonium carbamate in an acidic environment such as CO₂ and oil. This ammonium carbamate may desorb from the oil-absorbing amine adsorbent 29 due to changes in pressure or the like. Therefore, it is desirable to adopt a mode in which the activated carbon 27 capable of adsorbing CO₂, carbamic acid, and ammonium carbamate is laminated and filled in the hollow part together with the oil-absorbing amine adsorbent 29. Furthermore, as the action of the oil-absorbing amine adsorbent 29, in an aerobic environment, amines and carbamates are decomposed by nitrifying bacteria present in the drain into nitrous acid using CO₂, and further nitrous acid into nitrate. Also, in an anaerobic environment, nitrous acid and nitrate gas are reduced by denitrifying bacteria into nitrogen compounds such as nitric oxide (NO) and nitrous oxide (N₂O). In either reaction, nitrous oxide is generated. Nitrous oxide (alias: dinitrogen monoxide) is one of the main greenhouse gases causing global warming. Although its concentration in the atmosphere is lower than that of other greenhouse gases such as CO₂ and methane, its ability to cause warming per unit concentration is 298 - 310 times higher. Therefore, it is preferable to adopt a mode in which the zeolite 28 that effectively adsorbs the nitrogen compounds generated by the oil-absorbing amine adsorbent 29 is laminated and filled in the hollow part together with the oil-absorbing amine adsorbent 29.

[0021] The activated carbon 27 separates and removes the oil, odor, etc. contained in the drain, and adsorbs CO₂ and carbamate in a high-pressure environment. The raw materials, etc. of the activated carbon 27 are not particularly limited, such as plant-based, coal-based, and petroleum-based. Also, regarding the shape of the activated carbon 27, in order to increase the surface area for generating the separation and removal action, it is preferable to adopt a mode of making it into fine granular form. Zeolite 28 is a mineral that adsorbs metal ions and the like contained in the drain and has a porous body that selectively adsorbs CO2 under a high-pressure environment, similar to activated carbon 27. The shape of zeolite 28 is not particularly limited. For example, by forming it into a spherical granule shape, pellet shape, crushed shape, etc., it is possible to widen the surface area that can come into contact with the outside air and effectively adsorb CO2. The amine-containing oil adsorbent 29 decomposes the emulsified drain and oil and chemically adsorbs CO2. The amine-containing oil adsorbent 29 preferably uses aliphatic primary, secondary, and tertiary amines, as well as polyamines, polyimines, cyclic amines, amidine compounds, hindered amines, amino-siloxane compounds, amino acids, etc., and is applied or penetrated into a non-woven fabric.

[0022] Note that the separation tank 17 according to the present invention is determined to require replacement of the main body of the separation tank 17 according to criteria such as the installation period and the degree of adsorption. Furthermore, the filler 20 filled in the hollow part is in a state where foreign substances and CO2 already contained in the drain have been adsorbed.

[0023] The blocking step 2 is a step of removing the separation tank 17 disposed in the compressed air pressure circuit 10 in the installation facility 30 and blocking the inflow hole 18 and the discharge hole 19. The blocking step 2 is a step of blocking the inflow hole 18 and the discharge hole 19 in an open state by a blocking means after removing the separation tank 17 that needs to be replaced and the piping and the like connected to the separation tank 17 as the compressed air pressure circuit 10, and prevents the drain staying in the hollow part of the separation tank 17 from leaking to the outside through the inflow hole 18 and the discharge hole 19. The removal procedure of the separation tank 17 is not particularly limited, but by shutting off the flow path with valves 16 and the like provided in the front stage of the inflow hole 18 and the rear stage of the discharge hole 19 before removing the separation tank 17, it is possible to prevent the inflow and backflow of the drain. Also, the blocking means for the inflow hole 18 and the discharge hole 19 is not particularly limited, but for example, a mode of reliably blocking the openings of the inflow hole 18 and the discharge hole 19 using a fitting-type cap or a screw or other blocking parts 24 is preferable.

[0024] The first transfer process 3 is a process of packing the separation tank 17 removed from the compressed air pressure circuit 10 by the closing process 2 in the installation facility 30 and transferring it to the replacement facility 31. The first transfer process 3 is a process of packing the separation tank 17 with the openings of the inflow hole 18 and the discharge hole 19 closed after being removed from the compressed air pressure circuit 10, and then transferring it from the installation facility 30 to the replacement facility 31 by a transfer means. Regarding the packing method for the separation tank 17, any method that can mitigate the vibration and impact on the separation tank 17 during transfer may be used. For example, a mode such as storing it in a storage case formed of cardboard with a shock buffer material or the like wound around the main body of the separation tank 17 to be transferred can be considered. Also, there is no particular limitation on the transfer means from the installation facility 30 to the replacement facility 31, but an appropriate method will mainly be adopted according to the distance from the installation facility 30 to the replacement facility 31.

[0025] The disassembling process 4 is a process of disassembling the separation tank 17 transferred from the installation facility 30 in the replacement facility 31 and taking out the filler 20 filled in the hollow part of the separation tank 17. The disassembling process 4 is a process of receiving the separation tank 17 transferred from the installation facility 30 in the replacement facility 31, removing the packing, and then disassembling the closing component 24 attached in the closing process 2 and the component 23 constituting the separation tank 17 main body respectively, while taking out the filler 20 filled in the hollow part of the separation tank 17. In the disassembling process 4, since there is a possibility that the CO2 adsorbed by the filler 20 will be released and diffused into the atmosphere due to the pressure fluctuation when taking out the filler 20 from the separation tank 17, it is desirable to adopt a mode such as performing the disassembling operation in a pressurized environment, that is, a mode in which the CO2 adsorption by the filler 20 can be maintained. Since the separation tank 17 disassembled in the disassembly step 4 may be soiled or worn due to the installation environment of the installation facility 30 or contact with the drain discharged from the compressed air pressure circuit 10, it is preferable to clean the component parts 23 and the closing component parts 24 and replace the parts with severe wear after disassembling the separation tank 17. Further, since the filler 20 taken out from the separation tank 17 contains drain which is moisture, it is preferable to temporarily store it in a plastic bag or a storage container having water-repellent and water-resistant properties and then perform the sealing step 6.

[0026] It is preferable that the separation tank 17 disassembled into the component parts 23 and the closing component parts 24 in the disassembly step 4 is reassembled after cleaning and component replacement, and a regeneration step 5 is performed in which the unused filler 20 is filled into the hollow portion of the separation tank 17. By adopting this mode, when the separation tank 17 main body and the filler 20 are replaced due to deterioration, excellent effects such as being reusable as the separation tank 17 again only by replacing the worn parts and the filler 20 and cleaning are achieved.

[0027] The sealing step 6 is a step of sealing the filler 20 taken out from the separation tank 17 by the disassembly step 4 in a sealed container 25 in the replacement facility 31. The sealing step 6 is a step of storing the filler 20 taken out from the separation tank 17 by the disassembly step 4, or the filler 20 stored in a plastic bag or a storage container having water-repellent and water-resistant properties in a previously prepared sealed container 25 to seal the surrounding environment of the filler 20. By sealing the filler 20 through the sealing process 6, leakage of gases such as nitrogen oxides and CO2, drain, and foreign matter released from the filler 20 can be prevented. When activated carbon 27 is selected as such filler 20, there is a possibility that CO2 previously adsorbed on the activated carbon 27 is released to the outside air in a reduced-pressure environment. Also, even when the amine-impregnated oil adsorbent 29 is selected, there is a possibility that nitrifying bacteria adhere to the amine-impregnated oil adsorbent 29 upon contact with foreign matter in the drain or the atmosphere, resulting in the decomposition of the amine and the generation of N2O. Therefore, a mode of shortening the time during which the filler 20 is exposed to the outside air in the decomposition process 4 and the sealing process 6 is preferable. The sealing container 25 used in the sealing process 6 has no particular specification regarding its shape, structure, material, etc., as long as it can maintain a sealed state so that greenhouse gases such as CO2 adsorbed on the filler 20 and N2O generated by the decomposition of the amine-impregnated oil adsorbent 29 used as the filler 20 do not leak to the outside air. For example, a mode of using a double-layer plastic bag as shown in FIG. 3 and sealing each bag, or a mode of sealing by housing the filler 20 in a plastic box and closing the opening can be considered. Also, as shown in FIG. 3, even when a plurality of adsorption materials are used as the filler 20 to be sealed, a mode of collectively storing and sealing them in one sealing container 25 is preferable. By adopting such a mode, excellent effects such as contributing to the efficiency improvement of the sealing process 6 and enabling the reduction of the sealing containers 25 to be transferred to the incineration facility 32 can be achieved.

[0028] Regarding the material of the sealed container 25, a material that does not generate dioxin during the incineration process 8 described later is desirable. For example, polyethylene, biomass plastic, etc. can be considered. Among them, a mode of using a container formed of biomass plastic is preferable. Biomass plastic is a polymer material chemically or biologically synthesized from renewable biomass resources. Even when incinerated and CO2 is emitted, the total amount of carbon dioxide absorbed during growth and the amount of carbon dioxide emitted during incineration is plus or minus zero. Therefore, it is an environmentally friendly plastic that can exhibit high carbon neutrality. By forming the sealed container 25 with biomass plastic, even if CO2 is generated by the incineration process 8 described later, the overall CO2 amount will not increase, and as a result, it will contribute to the reduction of greenhouse gas emissions.

[0029] The second transfer process 7 is a process of transferring the filler 20 sealed by the sealing process 6 to the incineration facility 32 in the exchange facility 31. Specifically, it is a process of transferring the filler 20 stored in the sealed container 25 and in a sealed state from the exchange facility 31 to the incineration facility 32 by a predetermined transfer means while remaining in the sealed state. In such a second transfer process 7, when transferring the sealed container 25, a mode of packing the sealed container 25 as necessary may also be adopted. Regarding the packing method in that case, similar to the first transfer process 3, any method that can relieve the vibration and impact on the sealed container 25 accompanying the transfer may be used. Also, the transfer means from the exchange facility 31 to the incineration facility 32 is not particularly limited, and appropriate necessary methods will be adopted mainly depending on the distance from the exchange facility 31 to the incineration facility 32.

[0030] The incineration process 8 is a process of incinerating the filler 20 transferred from the exchange facility 31 in the incineration facility 32 to incinerate the filler 20 and foreign substances adsorbed on the filler 20. Incineration process 8 receives the sealed container 25 transferred from the exchange facility 31 at the incineration facility 32. If it is packed, the packing is removed, and the entire sealed container 25 is put into the incinerator in the incineration facility 32. In this way, adsorbents such as activated carbon 27, zeolite 28, and amine-treated oil adsorbent 29, which are the fillers 20 stored in the sealed container 25, and foreign substances adsorbed on each adsorbent are incinerated. Regarding the incineration method in the incineration facility 32, there is no particular limitation, and conventionally known techniques may be used. However, when the amine-treated oil adsorbent 29 is used as the filler 20, there is a possibility that N2O is generated due to the decomposition of the amine by nitrifying bacteria. Therefore, a mode of heating and burning to a temperature (about 600 degrees) at which N2O can be thermally decomposed is desirable.

[0031] When incinerated by the incineration process 8, the CO2 adsorbed by the filler 20 is released, and the gas discharged from the incinerator contains more CO2 than normal combustion treatment. Therefore, it is preferable to provide a CO2 recovery facility 33 downstream of the incineration facility 32 and include a CO2 recovery process 9 for selectively recovering and storing CO2 from the exhaust gas discharged from the incineration facility 32. There is no particular limitation on the method for recovering and storing CO2 from the exhaust gas by the CO2 recovery process 9. Conventionally known techniques such as the chemical absorption method using an amine aqueous solution may be adopted. Also, there is no particular limitation on the method of using the stored CO2, and methods such as using it as a food or industrial gas or injecting it into a depleted oil reservoir to pump out crude oil are also conceivable. The exhaust gas from which CO2 has been recovered by the CO2 recovery process 9 is discharged to the outside as clean exhaust gas.

[0032] Regarding the filler treatment method 1 having the above configuration, its main processing flow will be described based on FIG. 1. First, as the blocking process 2, the separation tank 17 that has reached the replacement timing due to the drain discharged from the compressed air pressure circuit 10 disposed in the installation facility 30 is removed from the compressed air pressure circuit 10, and blocking components 24 are attached to the inflow hole 18 and the discharge hole 19, which are the opening parts, respectively. Then, the separation tank 17 is packaged by the first transfer process 3 and will be transferred to the replacement facility 31.

[0033] Next, as the disassembling process 4, the packaging of the separation tank 17 transferred to the replacement facility 31 is removed, and it is disassembled into the component parts 23, the blocking components 24, and the filling material 20 that was filled in the hollow part of the separation tank 17. Then, the removed filling material 20 is stored in the sealed container 25 by the sealing process 6 to prevent the external release of CO2 adsorbed on the filling material 20. After that, the filling material 20 sealed by the sealing process 6 will be transferred to the incineration facility 32 by the second transfer process 7. Also, the disassembled component parts 23 and the blocking components 24 are washed, component parts are replaced, and the filling material 20 is filled by the regeneration process 5, and then they are transferred to the installation facility 30 as reused products.

[0034] When transferring the filling material 20 by the second transfer process 7, since the filling material 20 contains moisture which is the drain, the moisture evaporates inside the sealed container 25, and the internal pressure of the sealed container 25 becomes quite high. Therefore, even if CO2 is released from the carbamate adsorbed on the activated carbon 27 during transfer, the CO2 will be adsorbed by water or zeolite 28 under the pressurized environment. In other words, the water and zeolite 28 existing in the sealed container 25 can serve as a buffer for CO2.

[0035] The sealed container 25 transferred to the incineration facility 32 by the second transfer process 7 is unpacked if necessary, and incineration treatment is performed in the incinerator installed in the incineration facility 32 as the incineration process 8. At that time, with the filling material 20 stored inside, the entire sealed container 25 is subjected to the incineration treatment. Thereby, the filling material 20 can be incinerated without being exposed to the outside air. The exhaust gas generated during the incineration treatment has CO2 removed by the CO2 recovery facility 33 disposed at the subsequent stage of the incineration facility 32, and is discharged to the outside as clean exhaust gas.

[0036] As described above, the filler treatment method 1 according to the present invention has been explained, but the present invention is not limited to the structure and mode shown in the above embodiment. For example, in the incineration step 8, instead of subjecting the sealed container 25 containing the filler 20 to incineration treatment, it is also possible to adopt a mode in which the filler 20 is taken out from the sealed container 25 and only the filler 20 is incinerated, which can contribute to the reuse of the sealed container 25 and the reduction of CO2 emissions.

[0037] As described above, according to the filler treatment method 1 of the present invention, by transferring the filler 20 filled in the separation tank 17 to the incineration facility 32 in a sealed state, it is possible to prevent the release of external air of nitrogen oxides such as CO2 desorbed from the activated carbon 27 and N2O generated by the amine oil adsorbent 29, and after the nitrogen oxides are thermally decomposed by the incineration step 8, the CO2 is recovered by the CO2 recovery step 9, which contributes to the purification of the exhaust gas discharged from the incineration facility 32, and further contributes to the effective utilization of the recovered CO2, showing excellent effects.

[0038] Further, according to the filler treatment method 1 of the present invention, the separation of CO2 generated during transportation is ensured to a certain extent by zeolite 28 and nitrifying bacteria decomposition, and N2O generated during the decomposition by nitrifying bacteria during transportation is adsorbed by zeolite 28 and finally efficiently decomposed by a high-temperature incinerator. Furthermore, the oil adsorbent and adsorbed oil to be incinerated contribute to the high-temperature combustion of the incinerator, and the generation of dioxins is also suppressed by incinerating at a high temperature, showing excellent effects.

Industrial Applicability

[0039] The present invention is a method for treating the packing material in a treatment tank that deteriorates with the purification of a fluid. As a method for treating the packing material that contributes to preventing the diffusion of pollutants, it can be adopted for a treatment tank provided in any fluid flow path. Moreover, as a measure for reducing greenhouse gases in the atmosphere, which is also said to be a cause of global warming, it plays a part in this. Therefore, it is considered that the industrial applicability of the "packing material treatment method" according to the present invention is great.

Explanation of Signs

[0040] 1 Packing material treatment method 2 Blocking process 3 First transfer process 4 Decomposition process 5 Regeneration process 6 Sealing process 7 Second transfer process 8 Incineration process 9 CO2 recovery process 10 Compressed air pressure circuit 11 Compressor 12 Air tank 13 Air dryer 14 Cyclone separator 15 Drain trap 16 Valve 17 Separation tank 18 Inflow hole 19 Discharge hole 20 Packing material 23 Component parts 24 Blocking parts 25 Sealed container 27 Activated carbon 28 Zeolite 29 Oil adsorbent with amine 30 Installation facility 31 Replacement facility 32 Incineration facility 33 CO2 recovery facility

Claims

1. A method for removing and processing a filler from a separation tank disposed in a compressed air pressure circuit and filled with at least an amine-impregnated oil adsorbent, comprising: a blocking step of removing a separation tank with reduced function from the compressed air pressure circuit at the installation facility and blocking the inflow hole and the discharge hole; a first transfer step of transferring the blocked separation tank from the installation facility to an exchange facility; a disassembling step of removing the filler filled in the transferred separation tank; a sealing step of sealing the filler removed in the disassembling step in a sealed container; a second transfer step of transferring the filler sealed in the sealing step from the exchange facility to an incineration facility; an incineration step of incinerating the transferred filler at the incineration facility. The filler treatment method consists of these steps.

2. The filler treatment method according to claim 1, further comprising a CO2 recovery step of separating and recovering CO2 from the exhaust gas generated in the incineration step.

3. The separation tank filler treatment method according to claim 1 or claim 2, wherein in the second transfer step, the sealed container used for sealing the filler is formed of biomass plastic.

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