《新建年产8万吨聚氯乙烯聚合车间生产工艺设计学士学位论文》.docVIP

年产8万吨聚氯乙烯聚合车间生产工艺设计 摘 要 PVC是一种常用的化工原料，是氯碱工业优先考虑用来平衡氯气的产品。它具有阻燃、防腐、抗水及抗化学品腐蚀性、更好的机械性能和电绝缘性能。聚氯乙烯的重要性还在于其单独占有世界总氯消费量的35%,同时聚氯乙烯对氯碱平衡起着关键的杠杆作用。 如今，国内外主要采用悬浮聚合的方法生产聚氯乙烯。聚合过程是聚氯乙烯生产系统的重要环节，它的任务是将合成其他工序送来的氯乙烯单体在引发剂与分散剂的作用下聚合成为聚氯乙烯树脂。然后经过一系列的过滤、汽提、干燥等过程将PVC树脂处理成符合要求的产品。 本设计是以哈尔滨华尔化工有限公司的实际生产为依据。本次设计介绍了聚合工艺的原理及计算与工艺设计，该厂由过去的年产1.5万吨聚氯乙烯 ，扩建为年产8万吨。对采用悬浮法年产8万吨聚氯乙烯厂聚合车间各工序进行简要分析，确定工艺技术流程，确定蒸汽及冷却水的用量，同时进行离心机与干燥过程的物料衡算。确定完成生产任务所需的聚合釜的台数（70m3釜4台并联工作），对主要设备进行选型，并绘制设备图、工艺流程图及车间布置图。 关键词 氯乙烯；聚合；设计；设备选型 80,000 tons of PVC plant production area polymerization process design Abstract PVC is an important chemical raw materials, the chloral-alkali industry is a priority for the balance of chlorine products. It is fire retardant, weathering, anti-corrosion, anti-corrosive chemicals and water, good mechanical properties and electrical insulation properties of merit. PVC is the important of its separate chlorine occupy the worlds total consumption of 35 percent, while the chloral-alkali balance of PVC plays a key role as a lever. At present, the major domestic and foreign PVC produced by polymerization .Polymerization process PVC production system is an important aspect of its mandate is to bring the process of vinyl chloride monomer and the initiator of the emulsifier under PVC polymer latex. Then after a series of filters, stripping, drying process will be dealt with as to meet the requirements of latex products. This design is Harbin Waldorf Chemical Co., Ltd. based on the actual production, . The focus of this design is the principle and polymerization process, the plant from the previous year 15,000 tons of PVC, with an annual output of the expansion of 30,000 tons. The use of latex with an annual output of 30,000 tons of PVC plant polymerization processes of the workshop with a brief analysis, process to determine the steam and cooling water usage, while a centrifuge and drying process the material balance. Determined to complete production tasks for the polymer