JP5945151B2 - Recycled oil production apparatus and recycled oil production method - Google Patents

Description

  The present invention relates to a reclaimed oil production apparatus and a reclaimed oil production method for producing regenerated oil from waste oil.

  Conventionally, waste oil generated from fuel oil and lubricating oil for ships' engines and lubricating oil for machines other than engines is disposed of in incinerators installed onboard ships, or collected for a fee by specialists as industrial waste. I was doing. However, incineration of a considerable amount of waste oil requires an incinerator having an appropriate processing capacity, and also requires fuel for incineration. Furthermore, incineration of waste oil is accompanied by the release of carbon dioxide, which leads to air pollution. In addition, there was a problem that it was necessary to spend money to collect waste oil by a specialist.

  A technique for treating waste oil generated in such a ship and making it available as boiler fuel is known (Patent Document 1). The related art is intended to reuse waste oil, and if it is highly practical, it can solve the above problem. However, the related art requires a complicated process such as heat treatment, emulsion decomposition treatment, and three-phase separation, and has a problem of high cost. The problem of waste oil exists not only in ships but also in general facilities including factories and other onshore facilities. In these facilities in general, when the technique of Patent Document 1 is applied, the same problem occurs.

JP-A-8-10509

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a regenerated oil production technique for treating waste oil by a relatively simple apparatus or method and thereby producing regenerated oil.

  In order to solve the above problems and achieve the above object, the first aspect of the present invention is a reclaimed oil production apparatus for producing reclaimed oil from waste oil, comprising an oil-water separator and at least two stages. A water separator and a fuel reformer are provided. The oil / water separator separates oil from the waste oil. The at least two stages of water separators separate water in stages from the separated oil discharged from the oil / water separator. The fuel reformer reforms the separated oil by pulverizing sludge contained in the separated oil discharged from the final-stage water separator, thereby generating regenerated oil.

  According to this configuration, the waste oil is processed using the oil / water separator, the water separator of at least two stages, and the fuel reformer, thereby producing a regenerated oil that can be used as fuel. From the waste oil with the highest moisture concentration, the moisture concentration is lowered to the level of reclaimed oil through a three-stage device for separating water. Therefore, it is sufficient that each stage device has a low water separation capability. For example, at least two stages of water separators can be used that do not require power and have a well-known structure in which a number of baffles are fixed in an oil flow path. For example, a fuel reformer having a known structure in which sludge is mechanically pulverized by fins rotating at high speed can be used.

  Thus, according to the regenerated oil manufacturing apparatus of this structure, it becomes possible to process waste oil efficiently and to manufacture regenerated oil with a relatively simple apparatus structure. Note that the reclaimed oil production apparatus according to this configuration may be fixedly installed in the ship when it is used to process the waste oil generated in the ship, and is introduced into the ship when necessary. It may be a facility that is installed on land, or may be a facility on land or water that is used close to a ship when necessary.

  A second aspect of the present invention relates to a reclaimed oil production apparatus for producing reclaimed oil from at least two types of waste oil having different moisture concentrations, comprising at least a two-stage water separator and a fuel reformer And. The at least two-stage water separator receives the waste oil with the highest moisture concentration among the at least two types of waste oil in the first stage, and receives the waste oil with the lower moisture concentration in the subsequent stage, thereby separating the water from the waste oil in stages. To do. The fuel reformer reforms the separated oil by pulverizing sludge contained in the separated oil discharged from the final-stage water separator, thereby generating regenerated oil.

  According to this configuration, at least two types of waste oils having different water concentrations are processed using at least two stages of water separators and a fuel reformer, thereby producing reclaimed oil that can be used as fuel. . From the waste oil with the highest moisture concentration, the moisture concentration is lowered to the level of reclaimed oil through at least two stages of water separators. Therefore, each of the water separators at each stage needs to have a low water separation capacity. Moreover, among waste oils, waste oil with a lower moisture concentration is received by a water separator at a later stage, so that recycled oil can be efficiently produced from waste oil. For example, a fuel reformer having a known structure in which sludge is mechanically pulverized by fins rotating at high speed can be used.

  Thus, according to the regenerated oil manufacturing apparatus of this structure, it becomes possible to process waste oil efficiently and to manufacture regenerated oil with a relatively simple apparatus structure. Note that the reclaimed oil production apparatus according to this configuration may be fixedly installed in the ship when it is used to process the waste oil generated in the ship, and is introduced into the ship when necessary. It may be a facility that is installed on land, or may be a facility on land or water that is used close to a ship when necessary.

  According to a third aspect of the present invention, a fuel oil or a lubricating oil is recovered from waste oil generated in a ship equipped with a centrifugal separator for cleaning fuel oil or lubricating oil, and an oil / water separator for separating oil from bilge drainage. A reclaimed oil production apparatus for producing oil, comprising a first water separator, a second water separator, and a fuel reformer. The first water separator separates water from sludge oil discharged from the centrifuge. The second water separator further separates water from the first separated oil discharged from the first water separator and the second separated oil discharged from the oil / water separator. is there. The fuel reformer reforms the third separated oil by pulverizing sludge contained in the third separated oil discharged from the second water separator, thereby generating regenerated oil. To do.

  According to this configuration, waste oil generated in a ship having existing facilities such as a centrifugal separator and an oil / water separator is processed using the first water separator, the second water separator, and the fuel reformer. By applying, the regenerated oil which can be used as a fuel is manufactured. The first water separator only needs to be able to reduce the moisture concentration of the sludge oil discharged from the centrifuge to about the moisture concentration of the separated oil discharged from the oil / water separator. The second water separator only needs to be able to reduce the moisture concentration of the separated oil discharged from the oil / water separator to the moisture concentration of the regenerated oil that can be used as fuel. Therefore, both the first and second water separators need only have a low water separation capability. For example, the first and second water separators have a well-known structure in which a large number of baffle plates are fixed to the oil flow path. Is available. In addition, among the waste oil generated in the ship, the separated oil from the oil / water separator having a low moisture concentration is processed by the second water separator, so that the recycled oil can be efficiently produced from the waste oil. For example, a fuel reformer having a known structure in which sludge is mechanically pulverized by fins rotating at high speed can be used.

  Thus, according to the reclaimed oil production apparatus of this configuration, waste oil generated in a ship can be efficiently processed by adding a relatively simple device while using existing shipboard equipment, It can be manufactured. The added device may be fixedly installed on the ship, may be introduced into the ship when necessary, or may be equipment installed on land. Alternatively, it may be a mobile facility on land or water that is used close to the ship when necessary.

  According to a fourth aspect of the present invention, there is provided a reclaimed oil production apparatus according to the third aspect, wherein the ship further includes a backwash type filter for filtering the fuel oil or the lubricating oil, The fuel reformer reforms the backwash oil by pulverizing sludge contained in the backwash oil discharged from the backwash filter. It produces reclaimed oil.

  According to this configuration, the reverse cleaning oil discharged from the reverse cleaning type filter has a moisture concentration as low as that of the regenerated oil, while containing a large amount of sludge. Processed by reformer. As a result, reclaimed oil can be obtained from waste oil including backwash oil as waste oil from a ship equipped with a backwash type filter as inboard equipment. That is, the production efficiency from waste oil to recycled oil is increased.

  Of the present invention, the fifth aspect is a reclaimed oil production apparatus according to the third or fourth aspect, wherein the second water separator is waste oil generated in the ship, Waste oil having a moisture concentration as low as the separated oil of the oil / water separator is also subject to water separation.

  According to this configuration, waste oil having a moisture concentration as low as that of the oil separated from the oil / water separator is subjected to water separation by the second water separator, and recycled oil is obtained from the waste oil. For this reason, the production efficiency of reclaimed oil is improved. Waste oil with a moisture concentration as low as that of the water separator oil is, for example, discharged when equipment or equipment such as light oil used to clean equipment or equipment in the ship or pumps that use the oil is opened. There may be waste oil that is released.

  According to a sixth aspect of the present invention, there is provided a reclaimed oil production apparatus according to any one of the first to fifth aspects, wherein the regenerated oil produced by the fuel reformer is retained in the reclaimed oil. The filter further removes a solid component having a size greater than or equal to a predetermined value from a solid component by a filter.

  According to this configuration, since the solid components remaining in the regenerated oil reformed by the fuel reformer are removed from a certain size, a high quality regenerated oil can be obtained.

  According to a seventh aspect of the present invention, there is provided a reclaimed oil production apparatus according to the sixth aspect, wherein the filter removes a solid component exceeding about 100 microns.

  According to this configuration, the solid component exceeding about 100 microns among the solid components remaining in the regenerated oil reformed by the fuel reformer is removed, so that a higher quality reclaimed oil can be obtained.

  According to an eighth aspect of the present invention, there is provided a reclaimed oil production method for producing reclaimed oil from waste oil, comprising oil-water separation, at least two-stage water separation, and fuel reforming. The oil / water separation is to separate oil from the waste oil. The at least two-stage water separation separates water from the separated oil discharged by the oil / water separation. In the fuel reforming, sludge contained in the separated oil discharged by water separation in the final stage is pulverized to reform the separated oil, thereby producing regenerated oil.

  According to this configuration, reclaimed oil that can be used as fuel is produced by subjecting waste oil to oil / water separation, water separation of at least two stages, and fuel reforming. From the waste oil with the highest moisture concentration, the moisture concentration is lowered to the level of reclaimed oil through a three-stage process for separating water. Therefore, it is sufficient for each stage to have a low water separation capability. For example, for at least two stages of water separation, a well-known method of arranging a number of baffles in the oil flow path can be used. For fuel reforming, for example, a known method of mechanically pulverizing sludge with fins rotating at high speed can be used.

  Thus, according to the reclaimed oil manufacturing method of this structure, it becomes possible to process waste oil efficiently and to manufacture regenerated oil by a comparatively simple process. In addition, when the reclaimed oil manufacturing method of this structure processes the waste oil which generate | occur | produces in a ship, each process for manufacturing regenerated oil from the waste oil in a ship may be performed in a ship. It may be performed outside the ship.

  The ninth aspect of the present invention relates to a reclaimed oil production method for producing reclaimed oil from at least two types of waste oils having different water concentrations, comprising at least two stages of water separation, fuel reforming, It has. The at least two-stage water separation is such that the waste oil having the highest moisture concentration is received in the first stage among the at least two types of waste oils, and the waste oil having the lower moisture concentration is received in the latter stage, thereby separating the water from the waste oil in stages. Is. In the fuel reforming, sludge contained in the separated oil discharged from the water separation in the final stage is pulverized to reform the separated oil, thereby producing regenerated oil.

  According to this configuration, at least two types of waste oil having different moisture concentrations are subjected to at least two stages of water separation and fuel reforming, whereby a regenerated oil that can be used as fuel is produced. From the waste oil with the highest moisture concentration, the moisture concentration is lowered to the level of reclaimed oil through at least two stages of water separation. Therefore, the water separation at each stage is sufficient for the treatment with a low water separation capacity. Moreover, among waste oils, waste oils having a lower moisture concentration are processed by subsequent water separation, so that recycled oil can be efficiently produced from waste oils. For fuel reforming, for example, a known method of mechanically pulverizing sludge by rotating fins at high speed can be used.

  Thus, according to the reclaimed oil manufacturing method of this structure, it becomes possible to process waste oil efficiently and to manufacture regenerated oil by a comparatively simple process. In addition, when the reclaimed oil manufacturing method of this structure processes the waste oil which generate | occur | produces in a ship, each process for manufacturing regenerated oil from the waste oil in a ship may be performed in a ship. It may be performed outside the ship.

  According to a tenth aspect of the present invention, a fuel oil or a lubricating oil is recovered from waste oil generated in a ship equipped with a centrifugal separator for cleaning fuel oil or lubricating oil and an oil / water separator for separating oil from bilge waste water. A reclaimed oil production method for producing oil, comprising a first water separation, a second water separation, and a fuel reforming. The first water separation is for separating water from sludge oil discharged from the centrifuge. In the second water separation, water is further separated from the first separated oil discharged by the first water separation and the second separated oil discharged from the oil / water separator. In the fuel reforming, sludge contained in the third separated oil discharged by the second water separation is pulverized to reform the third separated oil, thereby generating regenerated oil. It is.

  According to this configuration, the first oil separation, the second water separation, and the fuel reforming are performed on the waste oil generated in the ship having the existing equipment such as the centrifugal separator and the oil / water separator, and used as fuel. Possible reclaimed oil is produced. The first water separation is sufficient if the moisture concentration of the sludge oil discharged from the centrifuge is reduced to the water concentration of the separated oil discharged from the oil / water separator. In addition, the second water separation is sufficient if the water concentration of the separated oil discharged from the oil / water separator is lowered to the water concentration of the regenerated oil that can be used as fuel. Therefore, both the first and second water separations need only be performed with a low water separation capacity. Moreover, among the waste oil generated in the ship, the separated oil from the oil-water separator having a low water concentration is processed by the second water separation, so that the recycled oil can be efficiently produced from the waste oil. For fuel reforming, for example, a well-known method of mechanically pulverizing sludge by rotating fins at high speed can be used.

  As described above, according to the reclaimed oil production method of this configuration, waste oil generated in a ship can be efficiently treated by adding a relatively simple process while using existing shipboard equipment, and It can be manufactured. In addition, each process for manufacturing regenerated oil from waste oil in a ship may be performed inside a ship or may be performed outside a ship.

  According to an eleventh aspect of the present invention, there is provided a reclaimed oil production method according to the tenth aspect, wherein the ship further includes a backwash type filter for filtering the fuel oil or the lubricating oil, The fuel reforming is performed by pulverizing sludge contained in the backwashing oil discharged from the backwashing type filter, thereby reforming the backwashing oil, thereby regenerating the recycled oil. Is to be generated.

  According to this configuration, the reverse cleaning oil discharged from the reverse cleaning type filter has a moisture concentration as low as that of the regenerated oil, and on the other hand, contains a large amount of sludge. A reforming process is performed. As a result, reclaimed oil can be obtained from waste oil including backwash oil as waste oil from a ship equipped with a backwash type filter as inboard equipment. That is, the production efficiency from waste oil to recycled oil is increased.

  According to a twelfth aspect of the present invention, there is provided a reclaimed oil production method according to the tenth or eleventh aspect, wherein the second water separation is waste oil generated in the ship, Waste oil having a moisture concentration as low as the separated oil of the oil / water separator is also subject to water separation.

  According to this configuration, waste oil having a moisture concentration as low as that of the oil separated by the oil / water separator is subjected to water separation by the second water separation, and regenerated oil can be obtained from the waste oil. For this reason, the production efficiency of reclaimed oil is improved. Examples of the waste oil having a moisture concentration as low as the separated oil of the water separator are as exemplified in the description of the reclaimed oil production apparatus according to the fifth aspect of the present invention.

  According to a thirteenth aspect of the present invention, there is provided a reclaimed oil production method according to any of the eighth to twelfth aspects, wherein the regenerated oil produced by the fuel reforming remains in the reclaimed oil. The solid component is further provided with a filtration that removes a solid component having a predetermined size or more by a filter.

  According to this configuration, since the solid component remaining in the regenerated oil reformed by the fuel reforming process is removed from a certain size, a high quality regenerated oil can be obtained.

  According to a fourteenth aspect of the present invention, there is provided a reclaimed oil production method according to the thirteenth aspect, wherein the filtration removes a solid component exceeding about 100 microns.

  According to this configuration, the solid component exceeding about 100 microns among the solid components remaining in the regenerated oil reformed by the fuel reforming process is removed, so that a higher quality reclaimed oil can be obtained.

  As described above, according to the present invention, it is possible to process waste oil with a relatively simple device or process, thereby producing reclaimed oil that can be used as fuel. Therefore, the present invention suppresses the expense required for waste oil processing for the waste oil discharger, and conversely brings income from sales of recycled oil, and contributes to the global environment in terms of energy saving and environmental protection. It is what makes.

It is a block diagram which shows the structure of the reclaimed oil manufacturing apparatus by one embodiment of this invention with the existing installation of a ship. It is a block diagram which shows the structure of the reclaimed oil manufacturing apparatus by another embodiment of this invention.

  FIG. 1 is a block diagram showing a configuration of a reclaimed oil production apparatus according to an embodiment of the present invention, along with existing facilities of a ship. The regenerated oil production apparatus 101 includes, as main components, a primary water separator 11, a secondary water separator 13, a pre-regeneration waste oil tank 19, a fuel reformer 21, a strainer 23, and pumps 33, 35, and 37. have. The reclaimed oil production apparatus 101 is configured on the premise of the existence of some existing ship facilities. Such ship equipment includes a centrifuge 1, a centrifuge sludge tank 3, a bilge well 5, an oil / water separator 7, a waste oil sludge tank 9, an engine 15, a strainer 17, and a pump 31.

  The centrifugal separator 1 is for washing fuel oil and lubricating oil for marine engines and the like, and since water injection washing is performed, sludge oil containing a large amount of water is discharged as waste oil. Sludge oil contains, for example, about 5% of oil containing sludge, and the remaining 95% is moisture. The sludge oil is stored in the centrifuge sludge tank 3.

  The bilge well 5 is a kind of sewage tank that collects wastewater and waste oil generated in the ship, and uses a part of the bottom of the ship. The waste water containing the oil component stored in the bilge well 5 is sent to the oil / water separator 7 by the pump 31. The oil / water separator 7 removes oil contained in the sent waste water. Wastewater from which oil has been removed until it falls below the international standard of 15 PPM is discharged out of the ship. The separated oil separated by the oil / water separator 7 contains about 30% of water. The separated oil is discharged to the waste oil sludge tank 9 as waste oil.

  In the waste oil sludge tank 9, waste oil generated in the ship and having a moisture concentration as low as the separated oil discharged from the oil / water separator 7 is discharged together. Such waste oil includes, for example, light oil used for washing equipment or equipment in the ship, and waste oil discharged when equipment or equipment such as a pump using the oil is opened.

  The primary water separator 11 separates water from the sludge oil stored in the centrifugal separator sludge tank 3. The separated water is discharged to the bilge well 5, and the separated oil is sent to the waste oil sludge tank 9 by the pump 33. The primary water separator 11 only needs to reduce the water concentration of the separated oil to about 30%. Therefore, the primary water separator 11 having a simple structure that does not require power can be used. For example, the well-known thing which has the structure where many baffles were fixed to the oil flow path can be utilized. The primary water separator 11 is provided with a sensor (not shown) that detects a boundary surface between separated water and oil. When it is detected that the boundary surface has exceeded a certain height due to the accumulation of water to some extent, the valve (not shown) provided at the bottom is opened to discharge water from the bottom to the bilge well 5. The For example, the valve is opened for a preset time. Valves are opened and closed automatically.

  The secondary water separator 13 further separates water from the waste oil stored in the waste oil sludge tank 9. The separated water is discharged to the bilge well 5. The secondary water separator 13 discharges, as separated oil, oil whose water concentration is lowered to about 2% or less, which is the water concentration of reclaimed oil that can be used as fuel. The separated oil is sent to the pre-regeneration waste oil tank 19 by the pump 35. The secondary water separator 13 only needs to produce separated oil having a moisture concentration of about 2% or less from waste oil having a moisture concentration of about 30%. Therefore, similar to the primary water separator 11, a secondary water separator 13 having a simple structure that does not require power can be used. For example, the well-known thing which has the structure where many baffles were fixed to the oil flow path can be utilized.

  Similar to the primary water separator 11, the secondary water separator 13 is also provided with a sensor for detecting the boundary surface between the separated water and oil, and when the boundary surface exceeds a certain height. Water is discharged from the bottom to the bilge well 5. In FIG. 1, the flow path from each of the centrifugal separator sludge tank 3, the waste oil sludge tank 9 and the pre-regeneration waste oil tank 19 to the bilge well 5 is used for discharging waste water and waste oil when cleaning these tanks. It is a drain. These drains are provided with valves (not shown) that are opened and closed manually, for example.

  The ship is provided with a strainer 17 that filters oil such as fuel supplied to the engine 15. The strainer 17 is a reverse cleaning type, and discharges reverse cleaning oil with intermittent reverse cleaning. Since the reverse cleaning oil has a moisture concentration as low as that of the recycled oil, the reverse cleaning oil is also poured into the waste oil tank 19 before regeneration. The pre-regeneration waste oil stored in the pre-regeneration waste oil tank 19 is sent to the fuel reformer 21 by the pump 37.

  The pre-regeneration waste oil stored in the pre-regeneration waste oil tank 19 contains a large amount of gel sludge. The fuel reformer 21 reforms the pre-regeneration waste oil by pulverizing the sludge contained in the pre-regeneration waste oil sent by the pump 37, thereby generating the regenerated oil. As the fuel reformer 21, for example, a well-known structure that mechanically pulverizes sludge with fins rotating at high speed can be used. The regenerated oil produced by the fuel reformer 21 is already reusable as fuel.

  The regenerated oil produced by the fuel reformer 21 is sent to the strainer 23. The strainer 23 is a filter having a filter that is included in the regenerated oil and removes solid components having a size exceeding a predetermined limit. The limit is, for example, about 100 microns. The reclaimed oil passes through the strainer 23 and becomes a higher quality fuel oil.

  As described above, the reclaimed oil production apparatus 101 can process the waste oil generated in the ship at a low cost and produce regenerated oil with a relatively simple configuration. That is, reclaimed oil that can be used as fuel can be obtained at low cost from waste oil in a ship mixed with water. Since it is not necessary to dispose of waste oil in an incinerator, no incinerator is required on board and no fuel for incineration is required. In addition, it is not necessary for the waste oil processing company to collect the waste oil for a fee, or the amount of waste oil to be collected can be kept low. Thereby, the trader who uses a ship can hold down the expense required for processing of waste oil. In addition, by selling reclaimed oil to a collector, the ship user is provided with income. The collector is also left to profit. Further, by eliminating wasteful combustion treatment of waste oil, it can contribute to the preservation of the global environment. That is, the reclaimed oil manufacturing apparatus 101 contributes to energy saving and environmental protection.

  FIG. 1 shows an example in which the regenerated oil production apparatus 101 is fixedly installed in the ship. On the other hand, the reclaimed oil production apparatus 101 may be introduced into the ship when necessary, such as when the ship is anchored, and may be used by being connected to facilities in the ship such as the centrifuge 1. The waste oil generated in the ship may be stored in the centrifuge sludge tank 3 and the sludge tank 9 until the regenerated oil production apparatus 101 is introduced, such as when the ship is sailing. The reverse cleaning oil discharged from the reverse cleaning type strainer 17 may be stored in the tank 19 by setting the pre-regeneration waste oil tank 19 on the ship. Alternatively, when the regenerated oil production apparatus 101 is introduced, the strainer 17 may be back-washed.

  In addition, the reclaimed oil production apparatus 101 is not temporarily installed in a berthed ship or the like, but is installed in a harbor or the like as ground equipment and stored in the centrifuge sludge tank 3 and sludge tank 9 in the ship. The waste oil to be used may be introduced into the above-ground equipment by, for example, a pipe. Alternatively, a dedicated ship equipped with the reclaimed oil production apparatus 101 may be brought into contact with a berthed ship or the like, and waste oil in the ship may be introduced into the reclaimed oil production apparatus 101 in the dedicated ship through a pipe or the like. In addition, the reclaimed oil production apparatus 101 is installed at a place away from the harbor, and waste oil is introduced into the transportation means such as a vehicle introduced into the harbor by a pipe etc. Waste oil may be transported to the recycled oil production apparatus 101. In any form, there is only a difference in whether a transportation means such as a pipe or a transportation means such as a vehicle is interposed between the facility in the ship and the recycled oil production apparatus 101, and the recycled oil production apparatus. By using 101, there is no change in processing waste oil in the ship and producing recycled oil. In any form, using the reclaimed oil production apparatus 101 to treat waste oil in a ship and produce reclaimed oil corresponds to a specific example of the reclaimed oil production method of the present invention.

  The reclaimed oil production apparatus 101 includes two-stage water separators 11 and 13. In contrast, by providing three or more water separators, it is possible to produce reclaimed oil from waste oil generated in the ship. By receiving the waste oil having the highest moisture concentration in the first stage and receiving the waste oil having the lower moisture concentration in the latter stage, the regenerated oil can be efficiently produced from the waste oil.

  FIG. 2 is a block diagram showing a configuration of a reclaimed oil production apparatus according to another embodiment of the present invention. As an example, the reclaimed oil production apparatus 102 processes waste oil generated in a factory or other onshore facility, thereby producing reclaimed oil. In the facility, a waste oil recovery tank 51 for storing waste oil is installed as existing equipment. The regenerated oil manufacturing apparatus 102 is introduced into the facility as an example for processing the waste oil stored in the waste oil recovery tank 51. The waste oil recovery tank 51 may be introduced into a facility as one of the components of the reclaimed oil manufacturing apparatus 102.

  The reclaimed oil production apparatus 102 includes an oil / water separator 63, a water separator 73, a water separator 79, and a fuel reformer 88. The oil / water separator 63 separates oil from the waste oil stored in the waste oil recovery tank 51. The water separator 73 separates water from the separated oil discharged from the oil / water separator 63. The water separator 79 separates water from the separated oil discharged from the water separator 73. The fuel reformer 88 reforms the separated oil by pulverizing the sludge contained in the separated oil discharged from the water separator 79, thereby generating regenerated oil. The generated reclaimed oil is transported to equipment of other traders who need reclaimed oil by a transport means 91 such as a tank lorry.

  Thus, the reclaimed oil production apparatus 102 produces reclaimed oil that can be used as fuel by subjecting the waste oil to oil / water separation, two-stage water separation, and fuel reforming. From the waste oil having the highest moisture concentration, the moisture concentration is lowered to the level of the regenerated oil through the three-stage devices 63, 73 and 79 for separating water. For this reason, all the devices 63, 73, and 79 that perform the processing of each stage need only have a low water separation capability.

  The oil / water separator 63 roughly separates waste oil into water and oil, and is suitable for processing a large amount of waste oil. The separated oil contains moisture. As the oil-water separator 63, for example, a well-known structure that allows a filter installed in a separation tank to pass through by applying pressure to waste oil can be used. In this structure, as the waste oil passes through the filter, the oil droplets contained in the waste oil are coarsened. As a result, the oil is accumulated in the upper layer in the separation tank, and the water is accumulated in the lower layer.

  The water separators 73 and 79 are for removing moisture contained in the oil. The water separators 73 and 79 are, as an example, a power having a well-known structure in which a number of baffle plates are fixed in the oil flow path, similarly to the water separators 11 and 13 of the reclaimed oil production apparatus 101 (FIG. 1). Unnecessary items are available. In this case, the number of holes formed in the baffle plate for capturing water by utilizing the surface tension of water is set smaller in the rear water separator 79 than in the front water separator 73. . That is, the baffle mesh is set smaller in the rear water separator 79 than in the front water separator 73.

  In this way, the reclaimed oil production apparatus 102 roughly divides waste oil into oil and water by the oil / water separator 63, and further removes moisture still contained in the oil by the water separators 73 and 79. That is, the reclaimed oil production apparatus 102 has a relatively simple configuration due to the skillful combination of apparatuses in which the oil / water separator 63 is arranged in the first stage and the plurality of stages of water separators 73 and 79 are arranged in the subsequent stage. In other words, an oil having a reduced water concentration from the waste oil to the level of the regenerated oil is obtained. The latter-stage water separator 79 may separate water from the separated oil discharged from the former-stage water separator 73 by causing the filter including the absorbent polymer to absorb water. The water separator 79 using an absorbent polymer has a simple structure and exhibits the ability to remove a small amount of water. As the fuel reformer 88, as in the fuel reformer 21 of the regenerated oil production apparatus 101 (FIG. 1), for example, a known structure that mechanically pulverizes sludge with fins that rotate at high speed can be used. is there.

  As described above, according to the regenerated oil production apparatus 102, it is possible to efficiently process waste oil and produce regenerated oil with a relatively simple apparatus configuration. The company that operates the facility introduces the reclaimed oil production equipment 102 at a relatively low cost, thereby converting the waste oil that had previously required cost for disposal as industrial waste into a recycle oil with economic value. Then, it can be handed over to other contractors and the like to obtain compensation.

  Next, the configuration and operation of the reclaimed oil production apparatus 102 will be described in more detail. The reclaimed oil production apparatus 102 further includes a service tank 59, a separated water tank 61, a service tank 83, and a controller 71. The service tank 59 is a regular tank that supplies waste oil stored in the waste oil recovery tank 51 to the oil / water separator 63. In order to appropriately increase the fluidity of the waste oil to be supplied to the oil / water separator 63, the service tank 59 is provided with a heater 60 for heating the waste oil. The amount of heat generated by the heater 60 is controlled by the controller 71.

  Waste oil supplied to the service tank 59 is pumped from the upper layer of the waste oil recovery tank 51. As illustrated in FIG. 2, the waste oil stored in the waste oil recovery tank 51 includes a lower water layer having a high water concentration, an emulsion layer on which water and oil are in an emulsion state, Three layers are formed with an oil layer having a low moisture concentration at the top. A float pump 55 floating on the oil is introduced into the waste oil recovery tank 51, and the float pump 55 sucks oil from the surface portion of the oil layer and sends it out to the service tank 59. The operation of the float pump 55 is controlled by the controller 71, whereby the oil in the service tank 59 is held at an appropriate amount.

  Further, a specific gravity type liquid level sensor 53 is placed in the waste oil recovery tank 51. The liquid level sensor 53 detects a boundary between oil and water, for example, an interface between the oil and the emulsion layer. The detection signal of the liquid level sensor 53 is sent to the controller 71. For example, when the interface detected by the liquid level sensor 53 reaches a set reference level, the controller 71 operates the pump 57 to remove waste oil with a high water concentration from the bottom of the waste oil recovery tank 51. To 61. When the waste oil recovery tank 51 is an existing facility in the facility, the float pump 55 and the liquid level sensor 53 are introduced together with other equipment as a part of the reclaimed oil production apparatus 102. Also good.

  Since the oil-water separator 63 does not require high oil-water separation capability as described above, a simple structure is sufficient. The oil / water separator 63 is provided with a sensor 67 for detecting the boundary between oil and water. When the sensor 67 detects the boundary of the oil / water, the controller 71 opens the valve 65 installed below the oil / water separator 63 to discharge the water in the oil / water separator 63 to the separated water tank 61. Thereby, the oil-water separator 63 discharges oil having a water concentration of, for example, about 50% from above. The valve 65 is, for example, an electromagnetic valve. The control of the valve 65 may be, for example, timer control for closing after a certain time after opening. The controller 71 controls each device while referring to the detection signal of each sensor, and includes, for example, a sequencer (program logic controller; PLC). The controller 71 may include an operation panel (not shown) that allows an operator to set the operation or control method of each unit. For example, the controller 71 can be configured so that the operator can set the opening time of the valve 65.

  Oil having a low water concentration is pumped out from above the oil-water separator 63 by the pump 69 and sent to the water separator 73. The operation of the pump 69 is controlled by the controller 71. Similarly to the oil / water separator 63, the water separator 73 is also provided with a sensor 75 that detects the boundary between oil and water. When the sensor 75 detects the boundary between the oil and water, the controller 71 opens the valve 77 installed below the water separator 73 to discharge the water in the water separator 73 to the separated water tank 61. Thereby, the water separator 73 discharges oil having a water concentration of, for example, about 30% from the upper part. The structure and operation of the valve 77 are the same as those of the valve 65, for example.

  Oil having a low moisture concentration is sent from above the water separator 73 to the water separator 79. Similarly to the water separator 73, the water separator 79 is also provided with a sensor 76 that detects the boundary between oil and water. Based on the detection signal of the sensor 76, the controller 71 opens the valve 81 installed below the water separator 79 to discharge the water in the water separator 79 to the separated water tank 61. Thereby, the water separator 79 discharges oil having a water concentration of, for example, about 1% from the upper part. The structure and operation of the valve 81 are the same as those of the valve 65, for example. If the water separator 79 utilizes a filter containing an absorbent polymer, the filter is replaced in a timely manner.

  From the upper part of the water separator 79, the oil whose water concentration is lowered to about 2% or less, which is the water concentration of reclaimed oil that can be used as fuel, is discharged. The discharged oil is temporarily stored in the service tank 83. The service tank 83 is provided with a liquid level sensor 85 that detects the oil level near the upper limit of the oil level. The controller 71 prevents the service tank 83 from overflowing by stopping the operation of the pump 69 when the liquid level sensor 85 detects the liquid level.

  When transporting the regenerated oil by the transport means 91 such as a tank lorry, the pump 87 and the fuel reformer 88 are operated. Thereby, the oil in the service tank 83 is sent to the fuel reformer 88, and the sent oil is reformed by the fuel reformer 88 to regenerated oil. The recycled oil is transferred to the conveying means 91. The pump 87 and the fuel reformer 88 start to operate and stop further when the operator of the transport unit 91 operates the operation panel of the controller 71, for example. The regenerated oil produced by the fuel reformer 88 is, for example, passed through a filter similar to the strainer 23 of the regenerated oil production apparatus 101 so as to be improved to a higher quality fuel oil, and then sent to the conveying means 91. Also good.

  The separated water stored in the separated water tank 61 is transported, for example, to a facility of a waste disposal contractor by transport means 93 such as a tank lorry. When the impurity concentration of the separated water is low enough to be below the official standard value, it can be discarded into a river or the like.

  The reclaimed oil production apparatus 102 has the two-stage water separators 73 and 79, but may have three or more stages of water separators. Moreover, the reclaimed oil manufacturing apparatus 102 may process the waste oil which generate | occur | produces in a ship. In that case, the regenerated oil production apparatus 102 may be fixedly installed in the ship, may be introduced into the ship when necessary, and is installed on land. There may be a mobile facility on land or water that is used close to the ship when necessary. In any form, using the reclaimed oil production apparatus 102 to treat waste oil and produce reclaimed oil corresponds to a specific example of the reclaimed oil production method of the present invention.

DESCRIPTION OF SYMBOLS 1 Centrifugal separator 5 Bilge well 7, 63 Oil-water separator 11 Primary water separator (1st water separator)
13 Secondary water separator (second water separator)
17 Strainer 21, 88 Fuel reformer 23 Strainer (filter)
73, 79 Water separator 101, 102 Recycled oil production equipment

Claims (10)

A reclaimed oil production apparatus for producing reclaimed oil from waste oil generated in a ship, comprising a centrifuge for purifying fuel oil or lubricating oil, and an oil / water separator for separating oil from bilge drainage,
A first water separator for separating water from sludge oil discharged from the centrifuge;
A second water separator for further separating water from the first separated oil discharged from the first water separator and the second separated oil discharged from the oil-water separator;
A fuel reformer that reforms the third separated oil by pulverizing sludge contained in the third separated oil discharged from the second water separator, thereby generating regenerated oil; A reclaimed oil production apparatus comprising: The ship is a ship further provided with a backwash type filter for filtering the fuel oil or the lubricating oil,
The fuel reformer reforms the backwash oil by pulverizing sludge contained in the backwash oil discharged from the backwash type filter, thereby generating the regenerated oil. The reclaimed oil manufacturing apparatus according to claim 1 . Said second water separator is a waste oil generated in said ship, the waste oil with low moisture concentration equivalent of about a separation oil of the oil water separator is also directed to a water separator according to claim 1, or reclaimed oil production apparatus according to 2. The filter according to any one of claims 1 to 3 , further comprising: a filter that removes, from a regenerated oil produced by the fuel reformer, a solid component remaining in the regenerated oil having a size larger than a predetermined size by a filter. The reclaimed oil manufacturing apparatus of description. The reclaimed oil production apparatus of claim 4 , wherein the filter removes solid components greater than about 100 microns. A reclaimed oil production method for producing reclaimed oil from waste oil generated in a ship, comprising a centrifugal separator for cleaning fuel oil or lubricating oil, and an oil / water separator for separating oil from bilge drainage,
A first water separation for separating water from sludge oil discharged from the centrifuge;
A second water separation for further separating water from the first separation oil discharged by the first water separation and the second separation oil discharged from the oil-water separator;
A fuel reformer that reforms the third separated oil by pulverizing sludge contained in the third separated oil discharged by the second water separation, thereby generating regenerated oil. Recycled oil production method. The ship further includes a backwash type filter for filtering the fuel oil or the lubricating oil,
The fuel reforming includes reforming the backwash oil by pulverizing sludge contained in the backwash oil discharged from the backwash filter, thereby generating the regenerated oil. Item 7. A method for producing reclaimed oil according to Item 6 . The second water separation is waste oil generated in the ship, and waste oil having a moisture concentration as low as that of the oil separated in the oil / water separator is also subject to water separation. 8. The method for producing reclaimed oil according to 7. The filtration according to any one of claims 6 to 8 , further comprising a filtration that removes, from the regenerated oil generated by the fuel reforming, a solid component remaining in the regenerated oil having a predetermined size or more from a solid component. Recycled oil production method. The method of producing reclaimed oil according to claim 9 , wherein the filtration removes solid components exceeding about 100 microns.

Images