(1) Research and Application of Composite Metal Catalysts
Our company has developed a modified alumina microparticle with ultra-high specific surface area and different heights of micro thorns and protrusions distributed on the surface as a catalyst carrier. Considering that precious metals such as ruthenium and rhodium can hydrogenate aromatic rings under relatively mild conditions, and the addition of non-metallic bimetallic and polymetallic supported catalysts can appropriately reduce catalyst costs and improve catalytic activity, we use modified alumina microparticles as the main carrier, noble metal ions such as ruthenium, rhodium, nickel are loaded as the main catalytic active substance, and non-metallic ions such as copper are loaded as the secondary catalytic active substance, Based on a comprehensive analysis of the effects of calcination and programmed heating, carrier type and structural size, catalytic active substances (such as ruthenium, rhodium, nickel, copper, etc.), catalytic active substance ratio and loading amount on catalyst activity and function, a high stereoselectivity and reusable composite metal catalyst was developed, and a new catalyst preparation technology was established.

(2) Hydrogenation Process and Intrinsic Safety Technology
Our company is based on the research and application of new composite metal catalysts, using high-quality high-temperature and high-pressure equipment, and applying the kettle intermittent production method to systematically explore and comprehensively optimize the reaction temperature, reaction pressure, hydrogen oil ratio, etc., and determine the basic hydrogenation process of the original source. This process can maximize the advantages and advantages of the new catalyst, significantly improve the conversion rate and stereoselectivity in the hydrogenation process of aromatic compounds, reduce production time and cost, and ensure the safe start-up, shutdown, and long-term operation of the device. At the same time, this process adds a pre-treatment section for raw materials and sets up a heavy component removal tower, which can remove heavier components at lower temperatures under reduced pressure conditions. It first fractionates and then hydrogenates, improving the adaptability of the device to various raw materials. Moreover, the heavy component removal tower operates under vacuum conditions and has a low bottom temperature. A special form of reboiler is used to reduce gasification rate and effectively suppress coking, which can significantly enhance the safety of the aromatic ring hydrogenation process.

(3) New Process for Product Separation and Purification
In response to the differences in structure, boiling point, and conformation between solvents, light components, target products, and heavy components in the filtrate of industrial reaction mixtures after filtration, our company has established a new process for the separation and purification of alicyclic products through systematic research. In terms of process equipment adjustment, based on the extraction distillation process, the main processes of catalyst removal, recovery, and product separation are formed through the comprehensive application of gravity sedimentation method, multi-stage filtration method, etc. High vacuum distillation (temperature controlled below 235 ℃) is used to achieve deep separation of reaction products, greatly reducing the proportion of ineffective reactor residue, not only obtaining high value-added products, but also improving the economic benefits of the enterprise, At the same time, it also improves the utilization rate of resources and achieves significant social benefits.