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农业工程学院
课程名称：
课程设计
年产3万吨聚丙烯的工艺设计
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目录
绪论 .................................................................................................................................................. 3 第一章 工艺流程确定 ................................................................................................................... 16
1.1 催化剂的配置和计量 ...................................................................................................... 16 1.2 丙烯预精制和丙烯保安精制及氢气压缩 ...................................................................... 18 1.3 预聚合与液相本体聚合 .................................................................................................. 21 1.4 聚合物闪蒸和脱气 .......................................................................................................... 25 1.5 聚合物的汽蒸和干燥 ...................................................................................................... 30 1.6 挤压造粒 .......................................................................................................................... 33 1.7 产品均化和包装码垛 ...................................................................................................... 37 1.8 生产原材料的规格 .......................................................................................................... 37 第二章 物料衡算 ........................................................................................................................... 42
2.1 计算基础(2.1.1-2.1.4郑伟玲) ......................................................................................... 42
2.1.1设计条件 .............................................................................................................. 42 2.1.2丙烯进料量 .......................................................................................................... 42 2.1.3催化剂用量 .......................................................................................................... 43 2.1.4氢气用量 .............................................................................................................. 43 2.2 原材料消耗定额 .............................................................................................................. 43 2.3 主要设备物料衡算 .......................................................................................................... 44
2.3.1 CO汽提塔T701物料衡算（2.3.1-2.3.4 陈思东） ...................................... 44 2.3.2 预聚合反应器R200物料衡算 ........................................................................... 45 2.3.3 聚合反应器R201物料衡算 ............................................................................... 45 2.3.4 闪蒸罐D301物料衡算 ..................................................................................... 47 2.3.5 汽蒸罐D501物料衡算（2.3.5-2.3.8 黄允胜） ........................................... 48 2.3.6 干燥器D502物料衡算 ....................................................................................... 49 2.3.7挤压造粒单元物料衡算 ...................................................................................... 49 2.3.8总物料平衡表 ...................................................................................................... 50
第三章 热量衡算 ........................................................................................................................... 51 3.1 主要设备热量衡算 .......................................................................................................... 51
3.1.1预聚合反应器R200热量衡算（3.1.1-3.1.3 沈扬华） ................................ 51 3.1.2聚合反应器R201热量衡算 ................................................................................ 53 3.1.3闪蒸罐D301热量衡算 ........................................................................................ 55 3.1.4汽蒸罐D501热量衡算（3.1.4-3.1.6 文豪） ................................................ 57 3.1.5干燥器D502热量衡算 ........................................................................................ 59 3.1.6总热量平衡表 ...................................................................................................... 61
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第四章 设备选型 ........................................................................................................................... 61
4.1 主要设备选型 .................................................................................................................. 61
4.1.1 预聚合反应器R200 ............................................................................................ 61 4.1.2 聚合反应器R201 ................................................................................................ 62 4.1.3汽蒸罐D501 ......................................................................................................... 63 4.1.4干燥器D502 ......................................................................................................... 67
4.2 设备一览表 ...................................................................................................................... 71 第五章 聚丙烯装置的安全生产 ................................................................................................... 76
5.1 静电的危害与防范 .......................................................................................................... 76
5.1.1静电危害 .............................................................................................................. 76 5.1.2 静电的防范措施 ................................................................................................. 76
5.2 其他安全措施 .................................................................................................................. 77 第六章 “三废”处理与环境保护 ............................................................................................... 77
6.1废水 ................................................................................................................................... 78 6.2废气 ................................................................................................................................... 78 6.3废渣 ................................................................................................................................... 78 参考文献......................................................................................................................................... 79
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摘要：聚丙烯是丙烯单体聚合而形成的高分子聚合物，是一种通用合成树
脂。它作为一种高分子塑料，在现代化工生产中占有重要的地位，是五大工程塑料之一。
聚丙烯之所以是各种聚丙烯烃材料中发展最快的一种，关键在于其催化剂技术的飞速发展。本设计中就详细介绍了聚丙烯随催化剂的发展而发展的情况。 本设计是以荆门石化的S-PP工艺为设计基础，设定年产量为两万吨，然后进行物料衡算、热量衡算、设备选型等过程，最终完成的一份比较完整的设计说明书。
另外聚丙烯来源丰富，价格便宜，易于加工成型，产品综合性能优良，因此被广泛地应用于化工、化纤、轻工、家电、建筑、包装、农业、国防、交通运输、民用塑料制品等各个领域，在聚烯烃树脂中，是仅次于聚氯乙烯、聚乙烯之后的第三大通用塑料。
关键词：聚丙烯 S-PP工艺 液相本体聚合 催化剂
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Abstract：Polypropylene is a generic synthetic resin ,which is polymerizated
by propylene monomer .As a polymer plastic, in the modern chemical production it occupies an important position and was one of the five major engineering plastics. Polypropylene is the fastest developing material in variety of hydrocarbon materials .The key reason is the catalyst’s rapid development. This design introduced polypropylene’s development with the development of catalyst.
The design is based on the Jingmen Petrochemical S-PP technology and set for 20,000 tons of annual output .Then proceed to the material balance 、 energy balance and equipment selection, Finally reached a more complete design specification.
Another, Because of its rich resource, low price, easy to process takes shape, fine productoverall performance,therefore it is widely applied to chemical,the chemical fiber, the light industry, the electrical appliances, the building, the packing, agricultural, the national defense, thetransportation, the civil plastic product and so on. In the polyolefine resin,it is only inferior after the PVC、PE the third general plastic.
Keywords:Polypropylen
catalyst
S-PP craft liquid phase polymerization
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