Waste oil distillation base oil and diesel oil dual system
Through the waste oil distillation base oil and diesel dual system pretreatment and catalytic cracking technology, the complex problem of waste oil regeneration process has been solved, efficient and continuous treatment of waste oil has been achieved, high-quality gasoline, diesel and base oil have been produced, and economic benefits have been improved.
Patent Information
- Application Number
- CN202422836434.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The existing waste oil regeneration process is complex and requires multiple treatments to produce diesel and base oil respectively, resulting in a long cycle, high costs, and difficulty in improving economic benefits.
The waste oil distillation base oil and diesel dual system is adopted, including pretreatment system, distillation tower, catalytic tower, condenser, residue oil tank and finished product tank. Through heating flocculation, distillation and catalytic cracking, the waste oil is continuously treated to produce gasoline, diesel and base oil. Combined with the vacuum system and refining system, the process flow is simplified and equipment investment is reduced.
It simplifies the process flow of waste oil regeneration, shortens the processing cycle, reduces equipment investment costs, improves the economic benefits of waste oil regeneration, and improves the quality of gasoline, diesel and base oil.
Smart Images
Figure CN223386093U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of waste oil regeneration technology, and in particular to a waste oil distillation base oil and diesel dual system. Background Art
[0002] Waste oil refers to oil that has been contaminated by physical or chemical impurities such as dust, metal shavings, water or chemicals after use. With the increasing necessity of environmental protection and increasingly stringent environmental legislation, waste oil recycling technology has become very important.
[0003] Currently, waste oil regeneration abroad primarily relies on hydrofining processes, along with new supercritical technologies, membrane separation technologies, and molecular distillation. Domestically, small-scale acid-base refining and adsorption refining are predominant. However, regardless of the process employed, only one type of waste oil can be regenerated into diesel or base oil. To regenerate both diesel and base oil, the waste oil must be treated multiple times, resulting in complex waste oil treatment processes, long regeneration cycles, and high equipment investment costs. This, in turn, makes it difficult to achieve economic benefits from waste oil regeneration. Utility Model Content
[0004] In order to improve the economic benefits of waste oil regeneration, the present application provides a waste oil distillation base oil and diesel dual system.
[0005] The present application provides a waste oil distillation base oil and diesel dual system using the following technical solutions:
[0006] A dual system for distilling waste oil into base oil and diesel comprises a pretreatment system, a distillation tower, a catalytic tower, a condenser, a residual oil tank, and a finished product tank. The pretreatment system is used to heat and flocculate the waste oil. The distillation tower is connected to the pretreatment system, the catalytic tower is connected to the distillation tower, the condenser is connected to the distillation tower and the catalytic tower, the residual oil tank is connected to the distillation tower and the catalytic tower, and a plurality of finished product tanks are connected to the pretreatment system and the condenser. The plurality of finished product tanks are used to store gasoline, diesel, and base oil, respectively.
[0007] By adopting the above technical solution, workers introduce waste oil into a pretreatment system, add flocculants to the pretreatment system, and heat and flocculate the waste oil. During the heating and flocculation process, gasoline in the waste oil evaporates, and the gasoline vapor is condensed and stored in a finished product tank. The waste oil pretreated in the pretreatment system then enters a distillation tower. When producing diesel, the distillation tower heats and distills the waste oil. The generated vapor is then sent to a catalytic tower for further heating and catalytic cracking. The generated diesel vapor is passed into a condenser and condensed to form diesel. The diesel is then stored in a finished product tank, and the waste oil in the distillation tower is discharged into a residual oil tank. When producing base oil, the distillation tower heats the waste oil, and then the waste oil in the distillation tower is sent to a catalytic tower for further heating. The base oil vapor generated by the waste oil is passed into a condenser and condensed to form base oil. The base oil is then stored in a finished product tank, and the waste oil in the catalytic tower is discharged into a residual oil tank. In this way, the waste oil is regenerated into two products, base oil and diesel. This simplifies the process flow that requires multiple waste oil treatments. The treatment process is continuous, shortening the waste oil regeneration cycle, reducing equipment investment costs, and effectively improving the economic benefits of waste oil regeneration.
[0008] Optionally, a refining system for decolorizing gasoline, diesel and base oil is connected to the pretreatment system and the condenser, and the refining system includes a transfer component, a decolorization tank and a decolorizer. The transfer component is connected to the pretreatment system and the condenser and is used to store the distilled gasoline, diesel and base oil. The decolorization tank is connected to the transfer component, the decolorization tank is connected to the finished product tank, and the decolorizer is arranged in the decolorization tank.
[0009] By adopting the above technical solution, the transfer system transfers and stores the gasoline, diesel and base oil distilled from the pretreatment system and condenser, and then the gasoline, diesel and base oil enter the decolorization tank. The decolorizer refines and decolorizes the gasoline, diesel and base oil. The refined and decolorized gasoline, diesel and base oil are then stored in different finished product tanks, effectively improving the quality of gasoline, diesel and base oil recycled from waste oil.
[0010] Optionally, the transfer assembly includes a gasoline transfer tank, a diesel transfer tank and a base oil transfer tank, the gasoline transfer tank is connected to the pretreatment system, the diesel transfer tank and the base oil transfer tank are both connected to the condenser, and the gasoline transfer tank, the diesel transfer tank and the base oil transfer tank are all connected to the decolorization tank.
[0011] By adopting the above technical solution, the gasoline distilled from the pretreatment system is stored in the gasoline transfer tank, and the diesel and base oil condensed by the condenser are stored in the diesel transfer tank and base oil transfer tank respectively, thereby storing gasoline, diesel and base oil in separate tanks to reduce the probability of mixing of gasoline, diesel and base oil during transfer.
[0012] Optionally, a plurality of partitions are provided in the decolorization tank, and the plurality of partitions divide the internal space of the decolorization tank.
[0013] By adopting the above technical solution, the staff connected the gasoline transfer tank, diesel transfer tank and base oil transfer tank to different spaces formed by the partition inside the decolorization tank, so that the gasoline, diesel and base oil can be refined and decolorized separately, reducing the mutual interference between the gasoline, diesel and base oil during the refining and decolorization process.
[0014] Optionally, the pretreatment system, the distillation tower and the catalytic tower are all connected to each other and provided with a vacuum system for vacuuming.
[0015] By adopting the above technical solution, before the waste oil is introduced into the pretreatment system, distillation tower and catalytic tower, the air and water vapor in the pretreatment system, distillation tower and catalytic tower are extracted through the vacuum system, which can reduce the boiling point of the waste oil in the pretreatment system, distillation tower and catalytic tower, and improve the distillation effect of the pretreatment system, distillation tower and catalytic tower on the waste oil.
[0016] Optionally, the vacuum system includes a vacuum pump, which is connected to the pretreatment system, the distillation tower and the catalytic tower.
[0017] By adopting the above technical solution, the vacuum pump is started, and the vacuum pump can conveniently and quickly reduce the pressure in the pretreatment system, the distillation tower and the catalytic tower.
[0018] Optionally, the vacuum pump is connected to both the gasoline transfer tank and the diesel transfer tank.
[0019] By adopting the above technical solution, the gasoline transfer tank and the diesel transfer tank are connected through a vacuum pump, so that the gasoline transfer tank and the diesel transfer tank can serve as a buffer between the vacuum pump and the pretreatment system, the distillation tower and the catalytic tower, thereby improving the stability when extracting the pretreatment system, the distillation tower and the catalytic tower.
[0020] Optionally, the distillation tower and the catalytic tower are both provided with temperature detectors, and the gasoline transfer tank is connected to a condenser.
[0021] By adopting the above technical solution, the temperature detector detects the temperature inside the distillation tower and the catalytic tower, which makes it easier for the staff to control the temperature inside the distillation tower and the catalytic tower, and then cuts the steam in the distillation tower and the catalytic tower, so that the steam with lower temperature in the catalytic tower condenses and enters the gasoline transfer tank, and the steam with higher temperature condenses and enters the diesel transfer tank, the steam with lower temperature in the distillation tower condenses and enters the gasoline transfer tank, and the steam with higher temperature condenses and enters the base oil transfer tank, and then the gasoline, diesel and base oil produced by distillation are subdivided and stored, thereby improving the finished product effect of gasoline, diesel and base oil recycled from waste oil.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. Regenerating waste oil into base oil and diesel products simplifies the process flow that requires multiple waste oil treatments. The treatment process is continuous, shortening the waste oil regeneration cycle, reducing equipment investment costs, and effectively improving the economic benefits of waste oil regeneration;
[0024] 2. The decolorizing agent refines and decolorizes gasoline, diesel and base oil. The refined and decolorized gasoline, diesel and base oil are stored in different finished product tanks, effectively improving the quality of gasoline, diesel and base oil recycled from waste oil;
[0025] 3. Separate and store the gasoline, diesel and base oil produced by distillation to improve the finished product effect of gasoline, diesel and base oil recycled from waste oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic flow chart of a dual system for distilling base oil and diesel from waste oil according to an embodiment of the present application.
[0027] Figure numerals: 1. Pretreatment system; 2. Distillation tower; 3. Catalytic tower; 4. Condenser; 5. Residue oil tank; 6. Finished product tank; 7. Refining system; 71. Transfer component; 711. Gasoline transfer tank; 712. Diesel transfer tank; 713. Base oil transfer tank; 72. Decolorization tank; 73. Decolorizer; 8. Partition; 9. Vacuum system; 91. Vacuum pump; 10. Temperature detector. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1 This application is described in further detail.
[0029] The embodiment of the present application discloses a dual system for distilling waste oil, base oil and diesel.
[0030] Reference Figure 1 The waste oil distillation base oil and diesel dual system includes a pretreatment system 1, a distillation tower 2, a catalytic tower 3, a condenser 4, a residual oil tank 5, a finished product tank 6, a refining system 7 and a vacuum system 9. The pretreatment system 1 is used to heat and flocculate the waste oil. In this embodiment, the pretreatment system 1 is a pretreatment tower, the inlet of the distillation tower 2 is connected to the outlet of the pretreatment system 1 through a pipeline, the gas phase inlet of the catalytic tower 3 is connected to the gas phase outlet of the distillation tower 2 through a pipeline, the liquid phase inlet of the catalytic tower 3 is connected to the liquid phase outlet of the distillation tower 2 through a pipeline, the inlet of the condenser 4 is connected to the gas phase outlets of the distillation tower 2 and the catalytic tower 3 through a pipeline, and the residual oil tank 5 is connected to the liquid phase outlets of the distillation tower 2 and the catalytic tower 3 through a pipeline.
[0031] Reference Figure 1, the refining system 7 is connected and installed on the pretreatment system 1 and the condenser 4, the refining system 7 is used to decolorize the distilled gasoline, diesel and base oil, the refining system 7 includes a transfer component 71, a decolorization tank 72 and a decolorizer 73, the transfer component 71 is connected and installed on the pretreatment system 1 and the condenser 4, the transfer component 71 is used to store the gasoline, diesel and base oil distilled from the pretreatment system 1 and the condenser 4, the transfer component 71 includes a gasoline transfer tank 711, a diesel transfer tank 712 and a base oil transfer tank 713, the gasoline transfer tank 711 is connected and installed on the pretreatment system 1 and the condenser 4 through a pipeline, the diesel transfer tank 712 is connected and installed on the condenser 4, the base oil transfer tank 713 is connected and installed on the condenser 4, the decolorization tank 72 is connected and installed Two partitions 8 are installed in the decolorizing tank 72 on the gasoline transfer tank 711, the diesel transfer tank 712 and the base oil transfer tank 713. The two partitions 8 divide the interior of the decolorizing tank 72 into three independent spaces. The three independent spaces are respectively connected to the gasoline transfer tank 711, the diesel transfer tank 712 and the base oil transfer tank 713. The decolorizing agent 73 is installed in the decolorizing tank 72. In this embodiment, the decolorizing agent 73 includes decolorizing sand and bleaching clay. The decolorizing sand is filled in the space connected to the gasoline transfer tank 711 and the diesel transfer tank 712, and the bleaching clay is filled in the space connected to the base oil transfer tank 713; three finished product tanks 6 are installed in communication with the decolorizing tank 72, and the three finished product tanks 6 are respectively connected to the three spaces separated by the partitions 8 in the decolorizing tank 72.
[0032] After condensation, gasoline vapor enters the gasoline transfer tank 711 for transfer storage, diesel vapor enters the diesel transfer tank 712 for transfer storage, and base oil vapor enters the base oil transfer tank 713 for transfer storage. Then, gasoline and diesel enter the space filled with bleaching sand separated by the partition 8 in the decolorization tank 72. The bleaching sand adsorbs impurities and pigments in gasoline and diesel, and then flows into two different finished product tanks 6 for storage. The base oil enters another space separated by the partition 8 in the decolorization tank 72 filled with bleaching clay. The bleaching clay adsorbs pigments and impurities in the base oil, and then the base oil enters another finished product tank 6 for storage. By storing gasoline, diesel and base oil in separate tanks and refining and decolorizing them separately in different spaces, the probability of mixing of gasoline, diesel and base oil during transfer is reduced, and the mutual interference between gasoline, diesel and base oil during refining and decolorization is reduced, thereby effectively improving the quality of gasoline, diesel and base oil recycled from waste oil.
[0033] Reference Figure 1 The vacuum system 9 is connected and installed on the pretreatment system 1, the distillation tower 2 and the catalytic tower 3. The vacuum system 9 is used to evacuate the pretreatment system 1, the distillation tower 2 and the catalytic tower 3. The vacuum system 9 includes a vacuum pump 91. The vacuum pump 91 is connected to the gasoline transfer tank 711 and the diesel transfer tank 712 through pipelines.
[0034] Before introducing the waste oil into the pretreatment system 1, distillation tower 2 and catalytic tower 3, the staff starts the vacuum pump 91, which extracts the gas and water vapor in the gasoline transfer tank 711 and the diesel transfer tank 712, and then extracts the gas in the pretreatment system 1, distillation tower 2 and catalytic tower 3, so that the pressure of the pretreatment system 1 is reduced to 10kPa, and the pressure in the distillation tower 2 and catalytic tower 3 is reduced to 2kPa, thereby reducing the boiling point of the waste oil in the pretreatment system 1, distillation tower 2 and catalytic tower 3, and improving the distillation effect of the pretreatment system 1, distillation tower 2 and catalytic tower 3 on the waste oil. In addition, the gasoline transfer tank 711 and the diesel transfer tank 712 serve as buffers between the vacuum pump 91 and the pretreatment system 1, distillation tower 2 and catalytic tower 3 during the extraction process, thereby improving the stability of the pretreatment system 1, distillation tower 2 and catalytic tower 3 during extraction.
[0035] Reference Figure 1 A temperature detector 10 for detecting the temperature is installed on both the distillation tower 2 and the catalytic tower 3. The temperature detector 10 detects the temperature inside the distillation tower 2 and the catalytic tower 3 in real time during the waste oil regeneration process, making it convenient for the staff to control the temperature inside the distillation tower 2 and the catalytic tower 3.
[0036] The implementation principle of the dual system of waste oil distillation base oil and diesel in the embodiment of the present application is as follows: the staff first turns on the vacuum pump 91 to reduce the pressure of the pretreatment system 1 to 10kPa, then introduces the waste oil into the pretreatment system 1, and adds flocculant. The pretreatment system 1 heats and flocculates the waste oil. During the flocculation process, gasoline vapor is continuously evaporated. After condensation, the gasoline vapor enters the gasoline transfer tank 711 for storage; then the vacuum pump 91 reduces the pressure of the catalytic tower 3 and the distillation tower 2 to 2kPa, and the waste oil in the pretreatment system 1 is introduced into the distillation tower 2. When producing diesel, the gas phase outlet connecting the distillation tower 2 and the condenser 4 is closed, the distillation tower 2 heats and distills the waste oil, and the generated steam is introduced into the catalytic tower 3 for catalytic cracking. When the waste oil temperature in the distillation tower 2 reaches 350-360°C, the waste oil in the distillation tower 2 is introduced into the catalytic tower 3 for further heating until it is heated to 450-460°C and no gas phase evaporates, completing the waste oil regeneration process. The residual oil in the catalytic tower 3 is discharged into the residual oil tank 5. During the process, the steam in the catalytic tower 3 is cut into two sections according to the temperature. The condensate of the 200°C steam condensed by the condenser 4 is sent to the steam In the oil transfer tank 711, the condensate of the 200℃~360℃ steam condensed by the condenser 4 is sent to the diesel transfer tank 712; when producing base oil, the gas phase outlet connecting the catalytic tower 3 and the condenser 4 is closed, the waste oil in the distillation tower 2 is heated to 350~360℃, and then the waste oil is introduced into the catalytic tower 3 and continued to be heated to 450~460℃. There is no gas phase in the distillation tower 2, and the residual oil in the catalytic tower 3 is discharged to the residual oil tank 5. During the process, the steam in the distillation tower 2 is cut into two sections according to the temperature, and the condensate of the 200℃ steam condensed by the condenser 4 is sent to the gasoline transfer tank 7 11. The condensate from the steam at 200°C to 420°C condensed by the condenser 4 is sent to the base oil transfer tank 713. Then, the gasoline, diesel and base oil in the gasoline transfer tank 711, the diesel transfer tank 712 and the base oil transfer tank 713 are refined and decolorized respectively to obtain gasoline, diesel and base oil. In this way, a single set of equipment can be used to regenerate waste oil into two products, base oil and diesel. This simplifies the process flow that requires multiple treatments of waste oil. The treatment process is carried out continuously, shortening the waste oil regeneration cycle, reducing equipment investment costs, and effectively improving the economic benefits of waste oil regeneration.
[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A waste oil distillation base oil and diesel dual system, characterized by: The invention comprises a pretreatment system (1), a distillation tower (2), a catalytic tower (3), a condenser (4), a residual oil tank (5) and a finished product tank (6). The pretreatment system (1) is used for heating and flocculating waste oil. The distillation tower (2) is connected to the pretreatment system (1). The catalytic tower (3) is connected to the distillation tower (2). The condenser (4) is connected to the distillation tower (2) and the catalytic tower (3). The residual oil tank (5) is connected to the distillation tower (2) and the catalytic tower (3). A plurality of finished product tanks (6) are connected to the pretreatment system (1) and the condenser (4). The plurality of finished product tanks (6) are used for storing gasoline, diesel and base oil respectively.
2. The waste oil distillation base oil and diesel dual system according to claim 1, characterized in that: The pretreatment system (1) and the condenser (4) are connected to a refining system (7) for decolorizing gasoline, diesel, and base oil. The refining system (7) comprises a transfer component (71), a decolorization tank (72), and a decolorizer (73). The transfer component (71) is connected to the pretreatment system (1) and the condenser (4) and is used to store distilled gasoline, diesel, and base oil. The decolorization tank (72) is connected to the transfer component (71). The decolorization tank (72) is connected to the finished product tank (6), and the decolorizer (73) is arranged in the decolorization tank (72).
3. The waste oil distillation base oil and diesel dual system according to claim 2, characterized in that: The transfer assembly (71) comprises a gasoline transfer tank (711), a diesel transfer tank (712) and a base oil transfer tank (713); the gasoline transfer tank (711) is connected to the pretreatment system (1); the diesel transfer tank (712) and the base oil transfer tank (713) are both connected to the condenser (4); and the gasoline transfer tank (711), the diesel transfer tank (712) and the base oil transfer tank (713) are all connected to the decolorization tank (72).
4. The waste oil distillation base oil and diesel dual system according to claim 2, characterized in that: A plurality of partitions (8) are provided in the decolorizing tank (72), and the plurality of partitions (8) divide the internal space of the decolorizing tank (72).
5. The waste oil distillation base oil and diesel dual system according to claim 3, characterized in that: The pretreatment system (1), the distillation tower (2) and the catalytic tower (3) are all connected and provided with a vacuum system (9) for vacuuming.
6. The waste oil distillation base oil and diesel dual system according to claim 5, characterized in that: The vacuum system (9) includes a vacuum pump (91), and the vacuum pump (91) is connected to the pretreatment system (1), the distillation tower (2) and the catalytic tower (3).
7. The waste oil distillation base oil and diesel dual system according to claim 6, characterized in that: The vacuum pump (91) is in communication with both the gasoline transfer tank (711) and the diesel transfer tank (712).
8. The waste oil distillation base oil and diesel dual system according to claim 3, characterized in that: The distillation tower (2) and the catalytic tower (3) are both provided with a temperature detector (10), and the gasoline transfer tank (711) is connected to the condenser (4).