順酐在純態下是無色或白色固體，有一種難聞的氣味。它還具有兩類化學能群，這使得它在化學合成和其他應用中非常有用。
Maleic anhydride is colorless or white solid in pure state, with an unpleasant smell. It also has two types of chemical energy groups, which makes it very useful in chemical synthesis and other applications.
過去，工廠是通過苯或其他芳香族化合物的氧化來制備的。但隨著部分材料上漲，工廠將使用正丁烷作為原料。苯和丁烷被送入熱氣流中，在高溫下通過催化劑床層。然后，工作人員將對空氣和碳氫化合物進行控制，從而降低混合物中發生火災的可能性。其次，產品將通過出料口排出。
In the past, the factory was prepared by oxidation of benzene or other aromatic compounds. However, as the price of some materials rises, the factory will use n-butane as raw material. Benzene and butane are sent into the hot gas stream and pass through the catalyst bed at high temperature. Then, the staff will control the air and hydrocarbons to reduce the possibility of fire in the mixture. Secondly, the product will be discharged through the discharge port.
同時，它具有兩類化學能群，因此在化學合成等應用中得到廣泛的應用。此外，她還廣泛應用于合成表面活性劑、殺蟲劑、除草劑和劑。
At the same time, it has two kinds of chemical energy groups, so it has been widely used in chemical synthesis and other applications. In addition, it is widely used in the synthesis of surfactants, pesticides, herbicides and bactericides.
目前，工業上順酐的工藝路線按原料可分為苯氧化法、正丁烷法氧化法、C4烯烴法和苯酐副產法4種。其中苯氧化法應用更加廣泛，但由于苯資源有限，C4烯烴和正丁烷為原料順酐的技術應運而生，尤其是富產天然氣和油田伴生氣的擁有大量的正丁烷資源，因此近年來正丁烷氧化法順酐的技術發展迅速，已經在山東順酐中占主要地位，其能力約占世界順酐總能力的80%。
At present, the production process of maleic anhydride in industry can be divided into benzene oxidation process, n-butane oxidation process, C4 olefin process and phthalic anhydride by-product process according to raw materials. Among them, benzene oxidation method is more widely used. However, due to the limited benzene resources, the technology of producing maleic anhydride from C4 olefins and n-butane as raw materials arises at the historic moment. Especially, countries rich in natural gas and associated gas from oil fields have a large number of n-butane resources. Therefore, in recent years, the technology of producing maleic anhydride by n-butane oxidation method has developed rapidly, and has occupied a major position in the production of maleic anhydride in Shandong Province. Its production capacity accounts for about 80% of the total production capacity of maleic anhydride in the world.
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