1. 丁烷法固定床工艺：丁烷法固定床工艺主要由亨斯迈公司、BP、SD、 康斯尔（Conser）公司拥有，与苯氧化法基本相似，但正丁烷氧化转化率和选择性均比苯低，其顺酐的摩尔收率按正丁烷计仅为 50％~55％，而原料气体中苯和正丁烷的摩尔浓度基本相同。因此对于同样规模的生产装置，正丁烷法需要较大的反应器和压缩机。反应温度 400～450℃，压力为 125～130 MPa。为了降低正丁烷的单耗，比利时的 Pantochim公司采用尾气循环工艺，吸收塔顶出来的尾气约50％经处理后与新鲜空气一并进入反应器。该工艺可使正丁烷的单耗下降约 10％ 。

1. Butane fixed bed process: The butane fixed bed process is mainly owned by Huntsman, BP, SD, and Consol, which is similar to the benzene oxidation method, but the conversion rate and selectivity of n-butane oxidation are lower than benzene. The molar yield of maleic anhydride is only 50%~55% based on n-butane, while the molar concentrations of benzene and n-butane in the raw gas are basically the same. Therefore, for production facilities of the same scale, the n-butane method requires larger reactors and compressors. The reaction temperature is 400-450 ℃ and the pressure is 125-130 MPa. In order to reduce the unit consumption of n-butane, Pantochim Company in Belgium adopts a tail gas circulation process. About 50% of the tail gas from the top of the absorption tower is treated and enters the reactor together with fresh air. This process can reduce the unit consumption of n-butane by about 10%.

2.  丁烷法流化床工艺：流化床工艺是 Lummus 公司和 Lonza 公司合作开发的 ALMA 工艺。 流化床反应器中，正丁烷和空气分别进入反应器后混合，避免了其混合时发生爆炸的可能 因此原料气中正丁烷的摩尔分数可以提高到 4％，反应所需空气约为固定床的一半，减少了空气压缩机的投资和操作费用。流化床工艺的能耗低于固定床，但丁烷的单耗要比固定床高约 8％，另外流化床催化剂的磨损也较大。

2. Butane method fluidized bed process: The fluidized bed process is an ALMA process jointly developed by Lummus and Lonza companies. In a fluidized bed reactor, n-butane and air are mixed separately after entering the reactor, avoiding the possibility of explosion during mixing. Therefore, the molar fraction of n-butane in the feed gas can be increased to 4%, and the required air for the reaction is about half of that of a fixed bed, reducing the investment and operating costs of the air compressor. The energy consumption of fluidized bed technology is lower than that of fixed bed, but the unit consumption of butane is about 8% higher than that of fixed bed. In addition, the wear of fluidized bed catalysts is also significant.

本文由顺酐生产厂家提供技术支持，更多的详细精彩内容请点击我们的网站http://www.jnjhhg.cn我们将会全心全意为您提供满意的服务。

This article is supported by the manufacturer of maleic anhydride. For more detailed and exciting content, please click on our website http://www.jnjhhg.cn We will wholeheartedly provide you with satisfactory service.