32m3h的溶剂萃取脱酚工段的初步设计.doc

32m3/h的溶剂萃取脱酚工段的初步设计 摘要 钢铁企业化工厂焦化废水中酚类化合物含量很高，它的大量排放给环境带来了严重污染，有害于人类健康及生物的生长繁殖，并且影响经济的可持续性发展。同时酚类物质在工业、农业、国防、医药卫生等方面又有着广泛的应用。因此，从废水中回收酚类化合物是变废为宝的环保项目。本设计采用溶剂萃取脱酚法，以5%N-503+95%煤油体系作为萃取剂，在脉冲萃取塔内进行连续逆流萃取，萃取酚后的溶剂油在碱洗塔内与碱液进行反萃取，油进入循环油槽重复利用，酚盐送去酚盐工段处理，从萃取塔出来的氨水送蒸氨工序进一步处理。这样不仅达到环保要求，还回收了宝贵资源。此法脱酚效率可达90%以上，是一种应用较广的脱酚方法。作者在设计中，主要探讨了生产工艺、主要设备的选择、车间布置原则和一些主要技术操作指标。完成了此工段的设计说明书、设计计算书、总平面图、流程图、断面图等相关任务。 关键字: 焦化废水; 脱酚萃取 a primary design of the solvent extraction dephenolizing worshop section of32m3/h Abstract Iron and steel enterprises in the chemical plant coking wastewater high content of phenolic compounds, a large number of its emissions to the environment brought about serious pollution, harmful to human health and the growth of the biological and economic impact on the sustainability of development. The design of a pulse from phenol extraction method coking plant phenolic wastewater treatment, with a view to recovery of valuable resources and meet environmental protection requirements. The coking plant wastewater was extracted with N-503. Phenol is extracted from waste water in the extraction tower and dissolved in N-503. The solvent oil which dissolves phenol reacts with sodium hydroxide in the base wash tower and creates useful phenolic substance.phenolic substance in industry, agriculture, national defense, medicine and public health aspects of a wide range of applications. Therefore, from the extraction of phenolic compounds in waste water recycling-is the environmental protection projects, the design of the national economy has an important position. Design focuses on the design of the purpose, meaning, from phenol extraction process and influencing factors. Calculation of the main terms of the original data, the material balance, all kinds of equipment. In the end of the coke plant wastewater treatment were discussed. Keywords :coking wastewater; removing phenol extract 摘要 I Abstract II 第一部分 设计说明书 1 1 绪言 1 1.1 设计任务 1 1.2 设计目的 1 1.3 设计指导思想 1 1.4 脱酚工段设计的意义 1 1.4