Catalytic Reforming: Realizing "Triple Jump"

The third-generation domestic reforming catalyst developed by our country's scientific research personnel after arduous research and development, was the first industrial application of the reforming device of Yangzi Petrochemical's aromatics plant and achieved great success. After nearly five years of production and operation, it has been shown that China's self-developed catalyst has completely solved the problem of “acclimatization” of imported catalysts, and overcomes the problem of limited regeneration capacity after the expansion of the aromatics reforming unit. Raw material processing capacity is increased by 200,000 tons annually. . Only calculated from the increase in aromatic hydrocarbon yield, liquid yield, and hydrogen yield of the catalyst can increase profits by more than 40 million yuan each year. In addition, the replacement of imports with domestic catalysts can reduce costs by more than RMB 10 million. The "Naphtha Catalytic Reforming Complete Set of Technology Development and Application" project, which is one of the core contents of this technology, has won the National Science and Technology Progress Award.
Catalytic reforming is an advanced clean oil production technology. For a long time, only the UOP company in the United States and IFP company in France have mastered the technology. Since 1996, Sinopec Luoyang Engineering Co., Ltd. and the Research Institute of Petrochemical Technology have carried out the research and development of catalytic reforming technology based on the digestion and absorption of foreign catalytic reforming technologies. Together with related production companies, they carried out systematic research and development around catalytic reforming processes, catalysts, key equipment, automation systems, and engineering amplification. In the new generation of continuous reforming high-efficiency catalysts, reaction-regeneration processes, reactors, and regenerators Key equipment such as lock hoppers, catalyst lifters, dryers, and reaction-regeneration control solutions, safety interlocking technologies, and engineering design models have achieved a series of innovations, broke the patent blockade of foreign technologies, and formed technical and economic indicators. Naphtha catalytic reforming complete sets of technologies that are comprehensively superior to foreign technologies of the same type.
The research and development task of a new type of catalyst, which is one of the core contents of this technology, is borne by the Research Institute of Petrochemical Sciences, and Yangzi Petrochemical cooperates closely. In 1997, the annual production capacity of Yangzi Petrochemical's aromatic reformer was changed from 1.05 million tons to 1.39 million tons. At that time, the world’s most advanced US R-132 catalyst was selected. After the expansion of the device, the imported catalyst gradually became dissatisfied with water and soil during long-term operation, gradually exposed problems such as high carbon deposition, low activity, low device load, and unsatisfactory economic and technical indicators, affecting the continuous high-load and stable operation of the device.
The company actively cooperated with scientific research units, provided all kinds of data such as raw materials and operating parameters of equipment operation without reservations, proposed and determined the overall design of the industrial application of a new generation of domestic reforming catalysts, and fully responsible for the exchange of equipment and start of construction. Calibration, participation and solution of domestic catalysts in the application process of abnormal carbon deposition, product analysis, comprehensive assessment of catalyst performance and other important technical difficulties. With the joint efforts of scientific research, production and other parties, the Research Institute of Petroleum and Chemical Technology has finally successfully developed a third-generation domestic high-platinum continuous reforming catalyst (PS-VII) with high activity and strong impact resistance, and in August 2004. The first industrial application of the aromatics reformer at Yangzi Petrochemical was successful. Its carbon deposition rate, liquid yield, and impact resistance were all better than those of imported products. The research and application of reforming catalysts in China have been followed from tracking simulation to independent innovation, and then Leading the international advanced level of three leapfrog technology advancement.
This reporter learned that naphtha catalytic reforming complete sets of technology have been widely used in Changling Refinery, Luoyang Petrochemical, Guangzhou Petrochemical and other companies. Two sets of large-scale industrial devices have been built using this technology, and high-efficiency catalysts have also been applied to 20 sets of industrial devices built using imported technologies, which have achieved significant economic benefits. In particular, Guangzhou Petrochemical's 1 million-ton catalytic reforming unit, which was completed and put into operation last year, has become a demonstration device for the domestic application of this complete set of technology, marking the complete success of this complete set of process technology development and engineering application with China's independent intellectual property rights. Therefore, China has become the third country in the world following the United States and France to possess this complete set of technology and realize industrialization. The popularization and application of this technology will greatly increase China's petrochemical industry's high-grade gasoline production capacity and bring new economic growth points to the company.

Carbon Steel Plate

A carbon Steel Plate has usually been considered as the steel that does not contain much alloy steel elements, also named as mild steel. Generally, elements are C, Mn, P, S, Si, besides these, there are no minimum limits for elements of Al, Cr, Ni, Mo, V, etc.
Low carbon steel is the most common form, and it's very malleable and ductile. Medium carbon steel balances ductility as well as strength for excellent wear resistance. High carbon steel is exceptionally strong, while ultra-high carbon steel can be tempered to even greater hardness but no malleability.
As the percentage of carbon gets larger, steel can become harder and stronger through heat-treating. Carbon steel is usually heated to change the mechanical properties of steel, usually ductility, hardness, strength, and resistance of impact. Increasing the carbon content of carbon steel makes it harder and stronger, but reduces the steel`s ability to be welded, making it more brittle.
Carbon steel plate is most often used for structural purposes such as buildings, yet it has the flexibility to be worked into ornate designs. Low carbon steel sheet (wrought iron) is typically used for fences, chain links, gates, and railings. Structural Steel (medium carbon steel) is used in cars, refrigerators, washing machines, buildings, and bridges. The steel sheets are normally made up of medium carbon steel.

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