1、丁烷法代替苯法成为主要趋势
1. Butane method instead of benzene method has become the main trend
目前国内顺酐生产工艺主要是苯氧化法，随着石油的上升，苯原料高位运行，苯氧化制顺酐成本加重，导致以苯为原料的国内顺酐企业不得不面临生产成本问题。在要求的提高和原料苯飞涨的形势下，丁烷法催化剂选择性提高，以苯法生产顺酐将被丁烷催化氧化制顺酐取代，将成为主要趋势。
At present, the domestic maleic anhydride production process is mainly benzene oxidation method. With the rise of oil price and the high price of benzene raw materials, the cost of benzene oxidation to maleic anhydride increases, resulting in the production cost problem of domestic maleic anhydride enterprises using benzene as raw materials. With the improvement of environmental protection requirements and the soaring price of raw benzene, the selectivity of butane catalyst is improved. The production of maleic anhydride by benzene method will be replaced by butane catalytic oxidation to maleic anhydride, which will become the main trend.
2、溶剂吸收法发展潜力较大
2. Solvent absorption method has great development potential
在后处理工艺中，溶剂吸收法节省了蒸发脱水的大量消耗，避免生成顺酸和异构化反应，提高了顺酐的回收率并降低了设备投资，和水吸收法工艺相比，其生产费用降低近20%，是目前国内外比较有吸引力的后处理工艺。整体来看，采用正丁烷固定床氧化法和溶剂吸收法后处理方法生产顺酐，可取得较好的经济效益，未来将有很大的发展潜力。
In the post-treatment process, solvent absorption method saves a lot of consumption of evaporation dehydration, avoids the formation of CIS acid and isomerization reaction, improves the recovery rate of maleic anhydride and reduces equipment investment. Compared with water absorption process, its production cost is reduced by nearly 20%. It is an attractive post-treatment process at home and abroad. On the whole, the production of maleic anhydride by n-butane fixed bed oxidation and solvent absorption post-treatment can obtain good economic benefits and will have great development potential in the future.
3、现代化控制手段加强
3. Strengthening modern control means
顺酐生产是一项较为复杂且系统的工作，整个过程涵盖的内容相对较多，一旦某个环节或是细节出现问题，不但会影响产量，而且还可能引起事故。加强顺酐生产工艺与防范对策的研究，利用现代化控制手段和的管理系统，对关键设备进行动态化监测，对强化生产主体的防范意识，优化顺酐生产工艺流程，提高生产效率和质量等，具有非常重要的现实意义和指导价值。
Maleic anhydride production is a complex and systematic work, and the whole process covers relatively many contents. Once there is a problem in a certain link or detail, it will not only affect the output, but also cause safety accidents. Strengthening the research on maleic anhydride production process and safety prevention countermeasures, using modern control means and all-round management system to dynamically monitor key equipment, has very important practical significance and guiding value for strengthening the safety prevention consciousness of production subjects, optimizing maleic anhydride production process and improving production efficiency and quality.
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