The graduation design content for the annual output of 100000 tons of propylene refining tower process design, the main task for yearly produces 100000 tons of propylene refining tower process design and process (working days 330 days), as well as the selection of main equipment, our design review. Complete the material balance, heat balance, effective energy utilization calculation and main equipment calculation; Draw process flow chart, main equipment diagram. Use AUTOCAD to draw control point process flow chart, workshop equipment layout and main equipment design drawing, and compile and write the design specification.

At present, there are five main kinds of production methods of C3H6, respectively is: the production of propylene (PDH) propane dehydrogenation, Methanol to olefins production (MTP), olefin disproportionation and cracking, catalytic cracking (FCC) technology, the steam cracking technology. This design USES the source of propylene is linde basf PDH technology production of propylene, raw material contains 85% 85% of propylene and propane, using aluminum oxide, chromium oxide catalyst, and the pressure of 23 psia, 540 degrees Celsius temperature in a fixed bed, through manifold, flame heating heater, recycling catalysts.

This design includes the process calculation of propylene refining tower, site selection of propylene refining tower, economic analysis, product quality inspection and environmental protection and safety. The material balance and heat balance were calculated for all sections in the design. To section used in the selection of main equipment specifications and calculation of pressurized column in detail design, including: tower material, plate number calculation, high tower, tower diameter calculation, plate fluid mechanics calculation, the properties of plate load calculation and calculation and determination of the final size. In the end, the symbol description is provided, and the process piping and instrument flow chart of the control point, the layout plan of the factory floor, the facade layout and the distillation tower equipment drawing are also drawn.

In the design process with reference to the process equipment layout design rules (HG20570), chemical plant piping layout design rules (HG/T20549) and "chemical process design manual" and other related standards and reference books, make a design idea within reasonable, design content accord with a standard to ask.

目录

1.前言 4

1.1 丙烯概述 4

1.1.1 丙烯的理化性质 5

1.1.2 丙烯的危险性 5

1.2 丙烯的生产技术 5

1.2 丙烯生产技术的比较 7

1.3 丙烯原料获得的选择 8

1.3.1 生产丙烯的丙烷来源 8

2 丙烯精制塔的工艺计算 8

2.1 原始数据 8

2.2 物料衡算 9

2.2.1 关键组分的计算 9

2.2.2 计算塔顶小时产量 9

2.2.3 计算塔釜混合组分的组成 9

2.2.4 质量分数与摩尔分数的转换 10

2.2.5 计算各组分进料量和塔底产品组分的量 11

2.2.6 物料衡算计算结果 12

2.3 塔温的确定 12

2.3.1 确定进料温度 12

2.3.2 确定塔顶的温度 13

2.3.3 确定塔釜的温度 13

2.3.4 进料，塔顶和塔釜温度以及组成的汇总 14

2.4 塔板数的计算 14

2.4.1 计算最小回流比的数值 14

2.4.2 计算最少理论板数 15

2.4.3 实际塔板数和回流比的计算以及确定 15

2.5 确定进料位置 16

2.6 全塔热量衡算 17

2.6.1 冷却器的热量衡算 17

2.6.2 再沸器的热衡算 18

2.6.3 全塔热量衡算 18

2.7 选定并确定板间距和塔径 19

2.7.1 计算塔顶、塔釜、进料的混合液密度及混合气体的密度 19

2.7.2 计算液体及气体的体积流量的值 21

2.7.3 板间距的初次选定以及塔径的估算圆整 22

2.8 确定浮阀塔塔板的结构以及尺寸的计算 23

2.8.1 塔板布置 23

2.8.2 溢流堰及降液管设计计算 25

2.9 水力学计算 27