基于MACS的空分设备控制系统

发布时间：2018-02-26 21:07

本文关键词： MACS 空分设备控制程序人机交互　出处：《华北水利水电大学》2016年硕士论文　论文类型：学位论文

【摘要】：空分设备在我国的经济发展过程中发挥着重要作用,空分设备的产品如:氧气、氮气、氩气等在生产和生活各个方面应用广泛[3]。氮气作为化工生产的主要原料,其使用量巨大。各种常用化肥中的氮含量都很高,硝酸铵氮含量36%,硫酸铵氮含量21%,尿素氮含量46.7%。除此外,氮气在化肥厂开工生产前或者在生产设备大修后,还被用来置换管道和容器内的空气和其他杂质气体,确保生产的安全。氧气用于重油的高温裂化、煤粉的气化等工序,以强化工艺过程,提高化肥产量[17]。一般,一套10万吨的合成氨装置需配到10000m3/h的制氧机。除了在化肥生产中的应用,氧气在石油化工和工业生产方面也有着巨大的作用,在石油和化工过程中的氧气反应采用富氧代替空气进行氧化反应,可以提高反应速度和产品质量[23]。处理生产过程中产生的污水,用来给活性炭富氧曝光也可以向污水池增氧,提高细菌活性等。随着河南某化工公司的产量提升,其对氧气,氮气的需求量也在不断增加,相应的对空分设备也提出了安全生产、经济运营、智能控制的要求。对于空分设备控制系统来说,则要求同时保证生产的安全性、连续性、和智能化。要满足这样的设计要求,需要采用安全可靠的工控系统和优秀的控制方案。本课题采用和利时DCS控制系统MACS,中央集中监控,控制站点分散控制的方式。设计介绍此公司新增设一台20000m3/h空分机组,设计基于和利时DCS的空分设备常规控制系统。主要包括以下特点:1、根据空分生产工艺特点和控制系统要求,介绍河南某公司新上的空分设备控制系统的系统结构和硬件配置。2、设计系统允许生产与停止的连锁控制逻辑。3、文章对控制算法组态,设备组态,数据库组态,监控画面组态,历史库数据采样与归档技术,各阀门操作控制进行设计论述。采用已有的标准模板,充分利用MACS系统提供的功能,实现很好的人机交互。在论文的设计中,对压缩机的防喘振控制技术进行一定的研究和应用。通过本系统的设计与应用,较好的满足空分设备生产的需要。
[Abstract]:Air separation equipment plays an important role in the economic development of our country. The products of air separation equipment such as oxygen, nitrogen, argon and so on are widely used in production and life. The amount of nitrogen used is huge. The nitrogen content in various common fertilizers is very high, the ammonium nitrate nitrogen content is 36, the ammonium sulfate nitrogen content is 21, and the urea nitrogen content is 46.7. in addition, nitrogen gas is produced before the fertilizer plant starts production or after the production equipment is overhauled. It is also used to replace air and other impurity gases in pipes and containers to ensure the safety of production. Oxygen is used in high-temperature cracking of heavy oil, gasification of pulverized coal, etc., in order to enhance the process and increase the yield of fertilizer [17]. A 100,000 ton ammonia plant needs a 10000m3 / h oxygen generator. In addition to its application in chemical fertilizer production, oxygen also plays a huge role in petrochemical and industrial production. In the process of petroleum and chemical industry, oxygen enrichment is used instead of air for oxidation reaction, which can improve the reaction speed and product quality [23]. With the increase in the production of a chemical company in Henan Province, the demand for oxygen and nitrogen is also increasing. The corresponding air separation equipment has also put forward safe production and economic operation. Requirements for intelligent control. For air separation equipment control systems, it is necessary to ensure the safety, continuity, and intelligence of production at the same time. It is necessary to adopt safe and reliable industrial control system and excellent control scheme. In this paper, we adopt DCS control system, central centralized monitoring, decentralized control mode of control station. We design and introduce a new 20000m3 / h air separation unit in this company. The conventional control system of air separation equipment based on Hutchison DCS is designed. It mainly includes the following features: 1, according to the characteristics of air separation production process and control system requirements, This paper introduces the system structure and hardware configuration of the new air separation equipment control system of a certain company in Henan Province, and designs the chain control logic .3which allows production and stop. The paper introduces the configuration of control algorithm, equipment configuration, database configuration, monitoring picture configuration. The history database data sampling and archiving technology, each valve operation control carries on the design elaboration. Uses the existing standard template, fully utilizes the function which the MACS system provides, realizes the very good man-machine interaction. The anti-surge control technology of compressor is studied and applied to a certain extent. Through the design and application of this system, it can better meet the needs of air separation equipment production.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TQ116.1;TP273

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