原料气的预净化和提浓：在催化剂存在的情况下，将含有大量杂质的原料气体进行预净化处理，使杂质浓度降10ppm以下或更低一些，投入后续工序。
Pre purification and concentration of raw gas: In the presence of a catalyst, the raw gas containing a large amount of impurities is pre purified to reduce the impurity concentration to below 10ppm or lower, and then put into subsequent production processes.
催化剂制备：将一定量的金属氧化物作为催化剂加入到反应器中进行还原焙烧以除去其中的氧原子并生成相应的络合产物如铁氰化物等中间化合物以及氧化剂如空气等进行反应的混合物称为助燃剂和还原剂混合物。
Catalyst preparation: A certain amount of metal oxide is added as a catalyst to the reactor for reduction roasting to remove oxygen atoms and generate corresponding complex products such as intermediate compounds such as ferrocyanide, and a mixture of oxidants such as air for reaction is called a mixture of combustion aid and reducing agent.
空气的制备：以空气代替氢气作助燃剂的化学反应称为空气的氧化作用。
The preparation of air: The chemical reaction of using air instead of hydrogen as a combustion aid is called the oxidation of air.
苯氧化法：苯氧化法是顺酐的传统工艺技术，主要工艺流程是将苯蒸汽和空气（或氧气）按照一定的比例混合，在钒钼氧化物系催化剂下作用，在固定床反应器中氧化生成顺酐混合气，经气体冷却器初步降温后，在部分冷凝器中捕集部分液体粗酐，未被冷凝的气态顺酐用水或者溶剂吸收，制得精酐，液态顺酐在包装工序冷却压制为成品。
Benzene oxidation method: Benzene oxidation method is a traditional process technology for producing maleic anhydride. The main process involves mixing benzene vapor and air (or oxygen) in a certain proportion, acting on a vanadium molybdenum oxide catalyst, and oxidizing in a fixed bed reactor to generate a mixed gas of maleic anhydride. After being initially cooled by a gas cooler, some liquid crude anhydride is captured in some condensers, and the uncondensed gaseous maleic anhydride is absorbed by water or solvent to produce phthalic anhydride, Liquid maleic anhydride is cooled and pressed into finished products during the packaging process.
将一定量的金属氧化物作为催化剂加入到反应器中进行还原焙烧以除去其中的氧原子并生成相应的络合产物如铁氰化物等中间化合物以及氧化剂如空气等进行反应的混合物称为助燃剂和还原剂混合物。
Adding a certain amount of metal oxide as a catalyst to the reactor for reduction roasting to remove oxygen atoms and generate corresponding complex products such as intermediate compounds such as ferrocyanide and oxidants such as air for reaction is called a mixture of combustion aid and reducing agent.
