乙烯装置控制系统设计+文献综述
毕业论文关键词： 乙烯；过程控制；仿真
Ethylene plant control system design
Abstract: Ethylene is the leading petrochemical production , the production process is more complex, there is a physical process , but also the chemical reaction process , both high temperature ( 1300 degrees Celsius ) , there are low temperature ( -170 degrees Celsius ) , but are typically chemical unit processes. Close convergence between these units , in the middle of a very small buffer room , demanding for each parameter variation range is very small, which means continuously produce ethylene automation made high demands. Ethylene production equipment product quality and yield ( yield ) not only directly related to the economic benefits, but also directly affect the production of a large number of downstream devices (such as polyethylene unit , polypropylene unit , ethylene glycol , etc. ) of normal production operations and product quality, thus the quality of the ethylene production process ( yield ) control plays a very prominent position. With the development of automatic control technology and artificial intelligence technology, advanced process control technology for safe and efficient operation of the ethylene plant plays an increasingly important role , it has been designed from the process simply does not meet the ethylene production process and the transformation of the production equipment obtain economic benefits. But the integrated application of chemical engineering technology, computer application technology and automatic control technology to implement advanced control box for ethylene production process optimization operation, give full play to the inherent potential of the device to low power consumption and low cost access to high-yield high economic returns .
Keywords: Ethylene；Process control；Simulation
目 录
1 绪论 1
1.1 乙烯装置简介 1
1.2乙烯装置计算机控制国内外发展概况 1
1.3 乙烯装置的工艺流程 2
1.4制冷系统 3
1.5 设计的主要内容 3
2 裂解炉的控制 4
2.1 裂解炉的数学模型 4
2.1.1 工业机理数学模型的建立 4
2.1.2 简化模型的建立 6
2.2 乙烯装置裂解炉的控制 7
2.2.1 裂解炉控制要求 7
2.2.2 裂解炉的炉管外壁最高温度的软测量 8
2.2.3 裂解炉生产能力控制 9
2.2.4蒸汽/烃比控制 11
2.2.5裂解炉的优化操作 11
3 乙烯精馏塔控制 13
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