丁二烯氢氰化法制3‑戊烯腈工段的模拟  

Simulation of Process for Preparation 3-Pentenenitrile by Butadiene Hydrocyanation

作　　者：董婷 殷玉娇 李娜[1] 王艳红[1] 郭婧[1] 韩兴华 DONG Ting;YIN Yujiao;LI Na;WANG Yanhong;GUO Jing;HAN Xinghua(School of Chemistry and Chemical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学化学与化工学院,山西太原030051

出　　处：《中北大学学报(自然科学版)》2025年第1期116-123,共8页Journal of North University of China(Natural Science Edition)

基　　金：山西省高等学校教学改革创新项目(J20220644);中北大学校基金资助项目(110121)。

摘　　要：己二腈(ADN)是一种用途广泛的重要有机化工原料,作为生产尼龙-66的原料,其需求在快速增长。丁二烯(BD)氢氰化法是现有ADN生产技术中最为先进的方法。BD氢氰化法生产ADN工艺分为三个工段:一级氢氰化工段、异构化工段、二级氢氰化工段。在一级氢氰化工段中,氢氰酸(HCN)不仅会导致催化剂中毒,且HCN在特定的条件下容易发生聚合,导致管路堵塞。本文除去HCN以避免HCN聚合后对管路以及设备造成的堵塞;在原流程的基础上增加了回收HCN的汽提塔;结合BD法制3-戊烯腈(3-PN)实验数据,推导了主反应动力学模型用于计算反应器体积,并将反应釜由单釜改为三釜并联;采用模拟软件Aspen PlusV 11对改进前后的一级氢氰化工段流程分别进行模拟,选择NRTL活度系数模型进行物性计算,模拟运行结果可查询且收敛。结果表明:HCN的转化率为98%,这与实际转化率98.5%基本吻合,说明建立的动力学反应器模型可信。进入异构化和二级氢氰化工段中HCN的质量分数为0,满足工艺设计的要求,说明在原流程增加汽提塔合理。Adiponitrile(ADN)is an important organic chemical material with a wide range of uses,and as a raw material to produce nylon-66,the demand is growingg rapidly.Butadiene(BD)hydrocyanation is the most advanced method among the existing production technologies,and the BD hydrocyanation process for ADN production is divided into three stages:the primary hydrocyanation stage,the isomerization stage,and the secondary hydrocyanation stage.In the primary hudrocyanation stage,HCN not only leads to catalyst poisoning,but also easy to polymerize under certain conditions,and leads to clogging of pipelines.Removing HCN first will help to avoid the clogging of pipelines and equipment caused by HCN polymerization.Based on the original process,a stripper was added to recover HCN.Combined with the experimental data of 3-pentenenitrile(3-PN)prepared by BD method,the main reaction kinetic model was deduced to calculate the reactor volume,and the reactor kettle was changed from a single kettle to three kettles in parallel.The simulation software Aspen PlusV 11 was used to simulate the primary hydrocyanide stage process before and after the improvement,respectively,and the NRTL activity coefficient model was selected to calculate the physical property,and the simulation run results were searchable and converged.The results show that the HCN conversion rate of 98%is basically consistent with the actual conversion rate of 98.5%,indicating that the kinetic reactor model is credible.The mass fraction of HCN in the isomerization and secondary hydrocyanation stage is 0,which meets the requirements of the process design,and indicates that it is reasonable to increase the stripper in the original process.

关 键 词：HCN 3-PN 己二腈 Aspen Plus 丁二烯氢氰化法 

分 类 号：TQ028.3[化学工程]