A regeneration process for waste wind power synthetic gear oil

Abstract

The present invention discloses a waste wind power synthetic gear oil regeneration process, comprising the following steps: step one: solid impurity cleaning; step two: impurity filtering treatment; step three: distillation dehydration treatment; step four: solvent extraction; step five: regeneration base oil treatment; step six: solvent recovery. The present invention belongs to the technical field of gear oil regeneration, and specifically refers to a waste wind power synthetic gear oil regeneration process, which can efficiently treat and regenerate waste wind power synthetic gear oil by adopting multi-stage filtration treatment, solvent extraction and hydrogenation regeneration treatment process, and recycle and reuse the treated materials, so that the treatment process is more energy-saving and environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of gear oil regeneration, and specifically refers to a process for regenerating waste wind power synthetic gear oil. Background Art

[0002] With the rise of new energy power generation, wind power generation has begun to take shape. According to relevant data, the total amount of wind power generation in my country in 2016 has reached 147,470,000 kilowatts. It is learned from the wind power planning department that by 2050, my country plans to produce 1 billion kilowatts of wind power, which can share one-fifth of my country's energy supply. As the blood of wind power gear sets, 320 wind power special gear oil can reduce the friction between mechanical parts such as gears and realize the normal operation of wind turbines. However, due to the harshness and complexity of working conditions, wind power gear oil is very easy to be mixed with solid impurities such as wind sand and iron filings during operation, or deteriorate due to oxidation of high-temperature environment by high-speed running oil. In order to avoid damage to the mechanical parts of wind turbines due to the decline in oil quality and lubrication, it is necessary to replace the lubricating oil in time. Therefore, at the current stage of rapid development of my country's wind power industry, the content of waste wind power 320 synthetic gear oil is increasing day by day.

[0003] Investigation and analysis show that the proportion of deteriorated oil in the waste wind power 320 synthetic gear oil is small, and the degree of deterioration is low, so there is great potential for recycling. If there is no efficient way to recycle it, it will not only waste resources but also damage the environment. Therefore, we have developed a set of efficient waste lubricating oil regeneration and treatment processes for waste wind power 320 synthetic gear oil. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a regeneration process for waste wind power synthetic gear oil. Through this method, the technical problems existing in the above-mentioned prior art are solved, and a regeneration process for waste wind power No. 320 synthetic gear oil is provided.

[0005] The technical solution adopted by the present invention is as follows: A waste wind power synthetic gear oil regeneration process proposed by the present invention comprises the following steps:

[0006] Step 1: Cleaning of solid impurities:

[0007] The waste wind power 320 synthetic gear oil in the storage tank is pumped into the sedimentation tank, and the solid impurities in the waste lubricating oil are settled and allowed to stand by using flocculants and adsorbents;

[0008] Step 2: Impurity Filtration:

[0009] After the solid impurities in the waste lubricating oil have been completely settled, the waste lubricating oil is pumped into the filtering device using a suction pump, and the filtering device is used to filter the fine impurities and solid mixtures in the waste oil;

[0010] Step 3: Distillation and dehydration treatment:

[0011] The filtered waste oil enters the distillation kettle to remove water and low-boiling impurities, thereby achieving the purpose of highly purifying the waste oil;

[0012] Step 4: Solvent Extraction:

[0013] Adding solvent to the waste oil liquid after distillation in proportion, stirring, extracting and separating to obtain the regenerated base oil;

[0014] Step 5: Regeneration base oil treatment:

[0015] The regenerated base oil obtained in step 4 is hydrogenated through a hydrogenation device to increase the saturation of the regenerated base oil, and after the hydrogenation is completed and filtered, it is pumped into a regenerated base oil collection tank for storage;

[0016] Step 6: Solvent recovery:

[0017] The solvent used in step 4 is distilled under reduced pressure to obtain a clean solvent, so that the solvent can be recycled.

[0018] Furthermore, in the step 1, the solid impurities in the waste oil liquid are settled by using flocculants and adsorbents for a standing time of 6-24 hours, and the impurities settled at the bottom of the pool need to be cleaned regularly.

[0019] Furthermore, when the waste oil liquid is extracted in the step 2, the extraction is stopped when the sediment is 2-3 cm away from the bottom of the pool.

[0020] Furthermore, the vacuum degree during distillation in step three is determined by the quality of the waste lubricating oil.

[0021] Furthermore, the solvent used in step 4 is one or more of methyl acetate, ethyl acetate, tetrahydrofurfuryl alcohol, furfural, and furfural.

[0022] Furthermore, the filtration in step 2 and step 5 is completed in a heat preservation environment.

[0023] Furthermore, in step 4, the waste lubricating oil is heated to 80°C-140°C.

[0024] Furthermore, in step five, sampling and testing need to be performed every hour.

[0025] Furthermore, in step 6, the storage place of the untreated solvent after use is kept dry, ventilated, clean and regularly cleaned, and care is taken to prevent the mixing of moisture and impurities during storage.

[0026] The beneficial effects achieved by the present invention using the above structure are as follows: a regeneration process for waste wind power synthetic gear oil, which can efficiently treat and regenerate waste wind power synthetic gear oil by adopting multi-stage filtration treatment, solvent extraction and hydrogenation regeneration treatment technology, and recycle and reuse the treated materials, making the treatment process more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a process flow chart of a waste wind power synthetic gear oil regeneration process proposed by the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0029] Embodiment 1:

[0030] Step 1: Cleaning of solid impurities: pumping the No. 320 wind power waste lubricating oil in the storage tank into the sedimentation tank, and using flocculants and adsorbents to settle the solid impurities in the waste lubricating oil;

[0031] Step 2: impurity filtration treatment. After the solid impurities in the waste lubricating oil are completely settled, the waste lubricating oil is pumped into the filtering device using a suction pump, and the fine impurities and solid mixtures in the waste oil are filtered using the filtering device;

[0032] Step 3: Distillation and dehydration treatment. The filtered waste oil enters the distillation kettle, is heated to 120°C, and the vacuum is about 8000pa, and maintained for 6 hours to remove moisture and low-boiling impurities, thereby achieving the purpose of highly purifying the waste oil;

[0033] Step 4: Solvent refining, adding solvent to the waste oil after distillation at a volume ratio of 1:1, stirring for 120 minutes, turning off stirring and heating, standing for 18 hours, releasing the solvent from the bottom of the distillation kettle, and obtaining the regenerated base oil;

[0034] Step 5: Recycled base oil treatment: according to the viscosity of the recycled base oil, set the appropriate air velocity ratio and hydrogen-to-oil ratio for hydrogenation to increase the saturation of the recycled base oil. After hydrogenation, the oil is filtered and pumped into the recycled base oil collection tank for storage.

[0035] Step 6: Solvent recovery: heat the solvent used in the fourth step to 180 degrees Celsius, distill it under a vacuum of 1100 Pa, and continue distilling for 2 hours after there is no fraction to obtain a clean solvent, so that the solvent can be recycled.

[0036] In the step 1, when the solid impurities in the waste oil are precipitated by the flocculant and the adsorbent, it needs to be left to stand for 6-24 hours, and the impurities precipitated at the bottom of the pool need to be cleaned regularly.

[0037] When the waste oil liquid is extracted in the step 2, the extraction is stopped when the sediment is 2-3 cm away from the bottom of the pool.

[0038] The actual working condition of the vacuum degree during distillation in step 3 is determined according to the quality of the waste lubricating oil.

[0039] The solvent used in the step 4 is tetrahydrofurfuryl alcohol.

[0040] The filtration in step 2 and step 5 is completed in a heat preservation environment.

[0041] In the step 4, the waste lubricating oil is heated to between 120°C.

[0042] The hydrogenation process in step 5 needs to be sampled and tested every hour.

[0043] The storage place of the untreated solvent after use in step 6 should be cleaned regularly, and the warehouse should be kept dry, ventilated and clean. During storage, special attention should be paid to prevent the mixing of moisture and impurities.

[0044] The working principle of the present invention: This No. 320 wind power waste lubricating oil regeneration treatment process realizes high-quality resource recovery of No. 320 wind power waste lubricating oil through adsorption, filtration treatment and treatment material regeneration process, recycles and reuses the treatment materials, and the treatment process follows the energy-saving principle.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above implementation cases, and the above implementation cases and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A process for regenerating waste wind power synthetic gear oil, characterized in that: The following steps are involved: Step 1: Cleaning of solid impurities: The waste wind power 320 synthetic gear oil in the storage tank is pumped into the sedimentation tank, and the solid impurities in the waste lubricating oil are settled and allowed to stand by using flocculants and adsorbents; Step 2: Impurity Filtration: After the solid impurities in the waste lubricating oil have been completely settled, the waste lubricating oil is pumped into the filtering device using a suction pump, and the filtering device is used to filter the fine impurities and solid mixtures in the waste oil; Step 3: Distillation and dehydration treatment: The filtered waste oil enters the distillation kettle to remove water and low-boiling impurities; Step 4: Solvent Extraction: Adding solvent to the waste oil liquid after distillation in proportion, stirring, extracting and separating to obtain the regenerated base oil; Step 5: Regeneration base oil treatment: The regenerated base oil obtained in step 4 is hydrogenated through a hydrogenation device to increase the saturation of the regenerated base oil, and after the hydrogenation is completed and filtered, it is pumped into a regenerated base oil collection tank for storage; Step 6: Solvent recovery: The solvent used in step 4 is distilled under reduced pressure to obtain a clean solvent, so that the solvent can be recycled.

2. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: In the step 1, the solid impurities in the waste oil liquid are settled by using flocculants and adsorbents for a standing time of 6-24 hours, and the impurities settled at the bottom of the pool need to be cleaned regularly.

3. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: When the waste oil liquid is extracted in the step 2, the extraction is stopped when the sediment is 2-3 cm away from the bottom of the pool.

4. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: The vacuum degree during distillation in step 3 is determined by the quality of the waste lubricating oil.

5. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: The solvent used in step 4 is one or more of methyl acetate, ethyl acetate, tetrahydrofurfuryl alcohol, furfural, and furfural.

6. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: The filtration in step 2 and step 5 is completed in a heat preservation environment.

7. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: In the step 4, the waste lubricating oil is heated to 80°C-140°C.

8. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: In step 5, sampling and testing need to be performed every hour.

9. The process for regenerating waste wind power synthetic gear oil according to claim 1, characterized in that: In step 6, the storage place of the untreated solvent after use is kept dry, ventilated, clean and regularly cleaned, and care is taken to prevent the mixing of moisture and impurities during storage.

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