Technology Keys and Innovations 1 Technology Keys (1) The use of proprietary additives, electrostatic pretreatment processes and key equipment designed and developed using electrochemical principles to remove mechanical impurities, carbon particles, inorganic metal salts and moisture. (2) Prioritize and improve the membrane suitable for waste lubricating oil filtration, determine the process parameters of waste lubrication filtration, and develop proprietary equipment for waste lubricating oil filtration. (3) Remove the vacuum distillation process, completely solve the problem of coking and clogging of equipment and pipelines, greatly improve the operational efficiency and energy utilization efficiency of the process, thereby increasing the economic benefits of the technology. (4) The use of proprietary catalysts for hydrogenation of waste lubricating oils and hydrogenation reactors to remove organic impurities and metal elements to produce high quality and stable Group II and Group III base oils. 2 Technological innovations (1) The use of unique electrostatic devices and proprietary additives to remove mechanical impurities, carbon particles, inorganic metal salts and moisture. In addition to the metal contaminants produced by the used lubricating oil, the additives brought by the waste lubricating oil will bring great challenges to the subsequent hydrogenation and regeneration of the waste lubricating oil. The entry of the metal into the hydrogenation reactor will poison the catalyst and affect the quality of the base oil product. . It is also a difficult point in the international arena. Among the waste lubricating oils are: molybdenum, zinc, calcium, phosphorus, sulfur, oxygen, nitrogen, chlorine, carbon, sludge and water. We refer to the technology of crude oil desalination and dehydration, and improve it to develop suitable waste. The electrostatic process for removing impurities from lubricating oils and the corresponding additives (demulsifiers and demetallizers). The process involves injecting a small amount of fresh chlorine-containing water into the waste lubricating oil to collect metal salts and other impurities in the waste lubricating oil, and then collecting tiny water droplets under a certain temperature, pressure, and additives and a high-voltage electric field. As a large water droplet, due to the difference in density, the gravity water droplets are settled and separated from the waste lubricating oil to achieve the purpose of desalination, de-mixing and dehydration. (2) The cross-flow filtration separation is carried out by the sieving action of the nano membrane. The nanofiltration membrane is characterized by a neat and uniform porous structure design, and the particles smaller than the pores of the membrane will pass through the membrane under the action of the static pressure difference. The particles larger than the pores of the membrane are intercepted on the surface of the membrane. From the chemical composition, the lubricating base oil has a carbon number of 20-70, a molecular weight of 250 to 1,000, or higher, and a middle distillate. (25--30 carbon atoms, molecular weight between 250--500) accounted for 93.4%. It is known from the screening mechanism of the nano film that if a nanofiltration membrane having a molecular weight cut off of 500 is selected, molecules or ions having a molecular weight of more than 500 will be removed. On the other hand, the main impurities in the waste lubricating oil are colloid, asphaltene, carbon black, etc., so the selection of a suitable nano film can effectively remove these impurities. (3) The proprietary catalyst and hydrogenation reactor remove organic impurities and metal elements to produce high quality and stable high-end base oil. The core of this innovation is the combination of catalysis and reaction. The reaction mechanism is based on the stable hydrogenation saturation. The special catalyst carrier is developed for macromolecules larger than 200 with modifiers and protective agents, so that the traditional single pore size is improved into double pore size. The macroporous carrier enables the reaction to be targeted and satisfies the role of macromolecular saturation and stabilization. The impurity components in the waste lubricating oil affect the performance of the hydrogenation catalyst to varying degrees, and some may be fatal. This requires the catalyst itself to be regenerated under high pressure hydrogen as much as possible to ensure continuous operation of the process. Operational flexibility. Due to the complexity of the components, the development of the catalyst also requires an understanding of the reaction mechanism. Through deepening understanding and amplification of the reaction mechanism, activation energy, and kinetics through R&D and pilot tests, this core innovation has technological advantages. The advantages of reaction temperature, pressure, hydrogen partial pressure, cyclic hydrogen ratio, metal resistance, and sulfur-resistant nitrogen compounds are reflected in the process flow and operability. The target product of this core innovation will optimize and rationally utilize the specificity of the added component of the waste lubricating oil. Try to use the recycled product to have greater advantages in oxidation resistance and saturation performance. The reaction itself will be in the color of the regenerated lubricating oil. Corrosion resistance meets the characteristics of the base oil, especially the light stability meets strict requirements.

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