文档介绍：齐齐哈尔大学
毕业设计(论文)
题目年产8万吨丙烯腈废水处理工段的初步设计
学院化学与化学工程学院
摘要
本设计完成了年产8万吨丙烯腈废水处理工段的初步设计。首先,说明书简单介绍了产品丙烯腈的意义与作用以及在国内外的发展现状。近年来随着丙烯腈在国内外需求量的攀升,极大的推动了丙烯腈的生产,但是,在丙烯腈生产过程中的污染问题也在日益凸显,尤其是在丙烯腈的合成和精制车间,将会产生大量含有氢氰酸、低聚物以及氰化物的高浓度有毒物质的废水,根据废水中有毒物质的沸点不同,在工艺选择上,通过查阅相关资料和文献,确定了用四效蒸发—生物降解法对有毒物质进行浓缩和降解。根据以往生产资料作为车间设计的经验数据,对工艺进行了大量的计算,包括物料衡算、热量衡算;并对主要的设备进行了Aspen模拟和计算选型。最后用AutoCAD绘制了带控制点的工艺流程图、主要设备图、以及用手绘制车间平立面布置图。
关键词:丙烯腈;废水;有毒物质;Aspen;工艺路线
Abstract
In the design, the preliminary design of the eighty thousand tons/year acrylonitrile wastewater treatment section pleted. First of all, the significance and functions of acrylonitrile and the development of the situation at home and abroad were introduced. In recent years, acrylonitrile rise in the domestic and foreign, Promote the production of acrylonitrile. At the same time, Pollution problems are also ing increasingly prominent in the production of acrylonitrile process. Especially in the synthesis and purification workshop of acrylonitrile. In the process will produce a large number of toxic substances wastewater such as hydrogen cyanide and acetonitrile. According to the difference of boiling point of toxic substances in the waste water. In the technology choice, Through the access relevant information and literature. Toxic substances concentrate and degradate with four-effect evaporation-the biodegradation, Based on the previous information, the plant design was designed by empirical data, he content of the process, Including material balance and heat balance. And the major equipment was simulated by Aspen and calculated selection. Last draw the main equipment figure with Auto CAD and flow chart with control point plan and the process of the workshop layout was drawn by hand.
Key words: Acrylonitrile; Wastewater; Toxic substances; Aspen; Process route
目录
摘要 I
ABSTRACT II
第1章总论 1
概述 1
产品的意义与作用 1
国内外的现状及发展前景 1
产品的性质和特点 2
生产方法的概述 2
处理工艺概述 3
设计依据 4
厂址选择 5
厂址选择的重要性 5