PTA装置中压缩机设备控制系统的开发与应用

发布时间：2018-01-15 06:05

本文关键词：PTA装置中压缩机设备控制系统的开发与应用　出处：《东北大学》2012年硕士论文　论文类型：学位论文

更多相关文章： PTA 压缩机组 控制系统 过程控制

【摘要】：PTA是生产聚酯纤维的主要原料,广泛应用于化纤、容器、包装、薄膜生产等领域。PTA装置分为氧化单元和加氢精制单元两部分,而压缩机则是氧化单元的核心设备。本文以浙江绍兴远东石化140万吨/年PTA项目为背景,我本人在该项目中负责压缩机组控制系统部分的工作,包括前期编程开发、模拟调试、现场调试以及试车投运等内容。由于国内尚无该类压缩机组的控制方案,本文所阐述的内容都是通过我本人在该项目中不断的分析工艺、结合以往经验总结而出,经过实际工程中的不断试验改进,最终实现了对该类压缩机组的控制要求。首先,介绍PTA行业的市场现状及前景。再引入压缩机组,对其组成结构、运行特性以及控制要求做详细研究。在掌握了压缩机组自身性能的基础上,结合PTA装置的工艺需要,提出控制系统的预期要求。其次,详细讲述控制系统的配置结构,对主要组成设备的功能分别加以描述。然后,针对过程控制中的预期要求,按照设备运行的顺序,分别从启动过程、并网过程、尾气切换、蒸汽切换、正常停车、紧急事件处理、安全保护等几方面制定控制逻辑,提出具体的解决方案。最后,通过现场调试过程以及运行情况,验证系统的有效性。并对出现的问题进行分析,加以解决。压缩机控制系统的核心在于对工艺流程的控制,因此本文将结合化学工艺重点阐述流程相关的控制内容。
[Abstract]:PTA is the main raw material for the production of polyester fiber. It is widely used in chemical fiber, container, packaging, film production and other fields. PTAs are divided into oxidation unit and hydrofining unit. The compressor is the core equipment of oxidation unit. This paper takes the 1.4 million ton / year PTA project of Zhejiang Shaoxing far East Petrochemical Company as the background. I am responsible for the control system part of the compressor unit in this project, including the pre-programming development, simulation and debugging. Field commissioning and commissioning and other content. As there is no control scheme for this kind of compressor units in China, the contents of this paper are all summarized through the analysis process of my own in the project, combined with the past experience. Through continuous test and improvement in practical engineering, the control requirement of this kind of compressor unit is finally realized. First, introduce the market situation and prospect of PTA industry. Then introduce the compressor unit, and make a detailed study on its composition structure, operation characteristics and control requirements. On the basis of mastering the performance of the compressor unit itself. According to the process requirement of PTA, the expected requirement of control system is put forward. Secondly, the configuration structure of the control system is described in detail, and the functions of the main components are described respectively. Then, according to the expected requirements of process control, according to the operation order of the equipment, respectively from the start-up process, grid connection process, exhaust gas switching, steam switching, normal parking, emergency handling. Safety protection and other aspects of the development of control logic, put forward specific solutions. Finally, the validity of the system is verified by the debugging process and the running situation. The problems are analyzed and solved. The core of compressor control system is the control of process flow.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH45;TP273

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