The cost of changing ditch oil is too high for aviation kerosene. How can I break it? Lu Xiuyang team in Zhejiang University did
It is not a new idea to turn ditch oil into aviation kerosene, but the current technical preparation cost is super high, and there is no industrialized application value.
Today, this problem has been cracked by the R & D team led by Professor Lu Xiuyang, a professor at Zhejiang University.
Lu Xiuyang told reporters that with the support of the Zhejiang Natural Science Foundation for many years, the team has raised a piece of oil The new method of hydrolysis in critical water, and then non -precious metal catalytic removal of aviation kerosene in non -hydrogen -non -hydrogen -non -hydrogen hydrogen catalysis, focusing on the research of non -precious metal catalytic systems in non -precipitated hydrogen decarcar in the process of non -solvents. Its low -cost, green preparation industrialization process. The key project of the Provincial Natural Science Foundation “The Construction of Anti -precious metal catalytic system in the process of non -solvent -free solvent non -solvent -free solvent non -hydrogen decarcar” passed the acceptance acceptance in April this year.
As a substitute for diesel, the academic and industrial circles have paid great attention to biological diesel. However, the first -generation biological diesel’s fatty acid methyl ester is oxidation -containing compounds, and the heat value is lower than that of petroleum diesel. Therefore, in order to ensure the safe driving of the vehicle, the penetration in petroleum diesel is less than 20%. At the same time, in the process of industrialization of biological diesel, in the production of industrialization of biological diesel, inorganic strong alkali catalysis was used to exchange reactions, and there were serious pollution problems.
Fatty acid non -solvent non -hydrogen non -precious metal catalytic continuous decarcar device
Oils contain 8 to 22 carbon -based hydrocarbon compounds through deoxidation. Its composition is similar to the petroleum diesel set, so it is called the second -generation biological diesel. The second -generation biological diesel does not contain oxygen, high thermal value, and sulfur -containing. It can be mixed with petroleum diesel at any proportion, or can be used alone. At the same time, it can be used as alternatives of aviation kerosene. Therefore, it has attracted much attention in recent years. However, from the perspective of industrialization, in addition to the source of raw materials, there are two major problems in the second -generation biological diesel of hydrogenation and dehydration of hydrogenation of oil and fat: First, the hydrogen consumption is large, weakening the industrialization attraction of the technology, and catalytic decarboxes can be used. Effectively solve the problem of “large hydrogen consumption”. The second is that most of the catalytic decarcar currently uses precious metal load catalysts. Due to the lack of precious metal resources and high prices, it has greatly improved the cost of reaction. Therefore, the development of high -efficiency and cheap non -valuable metal catalysts is the key to reducing costs.
No catalytic continuous hydrolyzed device in grease near critical water
Professor Lu Xiuyang proposed a new process of hydrolysis in the near -critical water, fatty acids, and non -precious metal catalytic decarcar production of aviation kerosene under non -solvent without solvents. Design, preparation, representation and evaluation, combined with reaction dynamics, a new method for fatty acid non -solvents non -precious metal catalytic decarcar is established to provide the theoretical and engineering foundation for the low cost and efficient preparation of second -generation biological diesel.
According to Lu Xiuyang, with the support of the Boeing Company of the United States, the technology has conducted continuous tests and verified the feasibility of its industrialized applications. In the next step, the long life test of catalysts will be carried out, as well as research on the construction of unsaturated fatty acid catalytic decarcar and aromatherapy coupling process, and the construction of a non -metal catalytic system for aviation kerosene non -metal catalytic systems.
It is understood that the project has published a total of 26 papers, including 20 SCIs, 1 ESCI, and 3 EI included; 14 authorized invention patents, and 20 invention patents have been applied.
Source: Science and Technology Finance Times (Reporter Jin Leping Correspondent Zhou Limin Xie Chongbo)
Edit: Wang Yan
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