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
目錄
摘要 I
Abstract II
第1章 緒論 1
1.1 產品介紹 1
1.2 主要原料及產品的物性數據 1
1.3 生產原理 3
1.4 已內酰胺新工藝的開發 5
1.5 已內酰胺生產技術的改進 6
1.6 國內典型生產工藝過程 6
1.7 存在的問題及選題依據 8
第2章 已內酰胺重排化學原理及工藝介紹 10
2.1 化學原理 10
2.2 工藝簡介(一步重排) 10
2.3 已內酰胺重排反應影響因素分析 11
第3章 已內酰胺二步重排反應的研究與開發 13
3.1 二步重排試驗方案 13
3.2 二步重排試驗結果 16
3.3 二步重排新工藝的開發 21
3.4 混合器的改變對重排反應的影響 22
第4章 重排效益比較 23
第5章 結論 25
參考文獻 26
致謝 27
