The main management methods of maleic anhydride include benzene oxidation, butene oxidation and n-butane oxidation, but benzene oxidation is still the main method.

1.苯氧化法苯在V-Mo-P系催化剂作用下，在固定床中发生氧化反应，生成山东顺酐，反应温度为365℃（反应床层也可用沸腾床，但消耗高）。然后用水吸收生成顺丁烯二酸，再经共沸脱水和精馏，刮片得到成品。

The results show that: 1. Benzene is oxidized by v-mo-p catalyst in fixed bed to form Shandong maleic anhydride at 365 ℃ (boiling bed is also used in reaction bed, but the consumption is high). Then, maleic acid is formed by absorption with water, and then the product is obtained by azeotropic dehydration and distillation.
 

2.丁烷（或丁烯）氧化法丁烷（或丁烯）在V-Mo催化剂作用下，经空气或氧气氧化生成山东顺酐，反应温度350-400℃。然后再经水吸收，脱水和精制得到成品。

2. Butane (or butene) oxidation method butane (or butene) is oxidized by air or oxygen in the presence of v-mo catalyst, and the reaction temperature is 350-400 ℃. Then the product is absorbed by water, dehydrated and refined.

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