Abstract
Caprolactam process is very complicated, Cyclohexanone oxime rearrangement reaction is the key process in Caprolactam production , Cyclohexanone oxime and oleum are reacted to produce Caprolactam, i.e. Beckmann rearrangement is the key step in the process. The reaction is very intensive and produces many by-products, which will impact a lot on the final product quality and production consumption.
The thesis focuses on the rearrangement impact factors analysis. Two stage rearrangement test scheme was worked out and executed on the basis of the original one stage rearrangement test scheme which was provided by DSM. The impact factors were measurable after the test. which provides conditions to apply the research result. The project has passed the examination. The statistics with respect to one stage and two stages rearrangement have been done. This process development will be the first time in China based on the literature searches.
Keywords: Caprolactam, Beckmann rearrangement, mixer, mol ratio, residence time
目录
摘要 I
Abstract II
第1章 绪论 1
1.1 产品介绍 1
1.2 主要原料及产品的物性数据 1
1.3 生产原理 3
1.4 已内酰胺新工艺的开发 5
1.5 已内酰胺生产技术的改进 6
1.6 国内典型生产工艺过程 6
1.7 存在的问题及选题依据 8
第2章 已内酰胺重排化学原理及工艺介绍 10
2.1 化学原理 10
2.2 工艺简介(一步重排) 10
2.3 已内酰胺重排反应影响因素分析 11
第3章 已内酰胺二步重排反应的研究与开发 13
3.1 二步重排试验方案 13
3.2 二步重排试验结果 16
3.3 二步重排新工艺的开发 21
3.4 混合器的改变对重排反应的影响 22
第4章 重排效益比较 23
第5章 结论 25
参考文献 26
致谢 27
