电磁流量计在废硫酸装置中的应用

发布时间：2018-04-25 19:25

本文选题：废硫酸再生 + 电磁流量计　；参考：《北京化工大学》2015年硕士论文

【摘要】：硫酸是一种主要的炼油工业原料,但在炼油装置使用的过程中,硫酸的浓度会逐渐降低,降低到一定程度后会变成废硫酸排放出去。从装置中排出的废硫酸具有很强的腐蚀性,对环境也有污染,而且也浪费了资源。因此许多炼油企业都有废硫酸回收装置,对废硫酸重新加工,使其浓度提高以达到循环利用。在废硫酸回收装置中,设置了很多仪表用来检测整个工艺过程参数,比如温度仪表、压力仪表、流量仪表、液位仪表、分析仪等。本文通过与其他流量计在精度、安装等方面进行选型对比,得出结论电磁流量计是最适合硫酸流量测量的仪表。因此在青海2.5万吨／年废硫酸回收装置设置电磁流量计用于测量硫酸的流量,不仅提高了测量准确度和精度,确保了企业经济效益。文中又对硫酸装置中仪表的选型、选材、安装及出现问题的解决办法进行研究。同时设计本装置中所有的检测仪表,将其运用到自动控制系统中,提高了整个装置的自动化水平。电磁流量计是利用法拉第电磁感应定律来测量导电液体的仪表,具有精度高、安装简单、耐腐蚀性强、可靠性高、容易变更范围等优点,目前在全世界已经广泛应用。
[Abstract]:Sulfuric acid is one of the main raw materials in refining industry, but the concentration of sulfuric acid will decrease gradually in the process of oil refining unit use, and then it will be discharged into waste sulfuric acid to a certain extent. The waste sulfuric acid discharged from the plant is very corrosive, pollutes the environment and wastes resources. Therefore, many refineries have waste sulfuric acid recovery units, reprocessing waste sulfuric acid to increase its concentration to achieve recycling. In the waste sulfuric acid recovery plant, many instruments are set up to detect the whole process parameters, such as temperature meter, pressure meter, flow meter, liquid level meter, analyzer and so on. By comparing with other Flowmeters in precision and installation, it is concluded that electromagnetic Flowmeter is the most suitable instrument for sulphuric acid flow measurement. Therefore, an electromagnetic Flowmeter is set up in the 25000 t / a waste sulfuric acid recovery unit in Qinghai to measure the sulfuric acid flow rate, which not only improves the accuracy and accuracy of the measurement, but also ensures the economic benefit of the enterprise. In this paper, the selection, material selection, installation and solution of the problems in the sulphuric acid plant are also studied. At the same time, all the measuring instruments in the device are designed and applied to the automatic control system, which improves the automation level of the whole device. Electromagnetic Flowmeter is an instrument which uses Faraday's law of electromagnetic induction to measure conductive liquid. It has the advantages of high precision, simple installation, strong corrosion resistance, high reliability and easy to change the range. It has been widely used all over the world.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ111.1;TQ056.15

【参考文献】

中国期刊全文数据库前10条

1 陈怡;;近年来硫酸分析仪器的发展与选择[J];硫酸工业;2014年02期

2 张新华;;制酸尾气在线二氧化硫分析仪的研制及应用[J];硫酸工业;2012年02期

3 李辉林;李存福;申凤玉;包温姬;;盐湖集团25 kt/a废硫酸再生装置的设计[J];硫酸工业;2010年05期

4 杨永福;艾建玲;付维军;;废硫酸回收新工艺[J];环境工程;2009年03期

5 纪罗军;黄新;;我国废硫酸的资源化利用与循环经济[J];硫酸工业;2008年05期

6 史慧;田增国;汪献忠;赫树开;;智能在线pH分析仪的设计[J];微计算机信息;2007年31期

7 张丙新;高精度氧分析仪性能简介[J];低温与特气;2004年05期

8 张涛,李斌;电磁流量计中的抗工频干扰问题[J];测控技术;2003年02期

9 孙向东,何晓芹;电磁流量计的智能化前端信号电路设计[J];单片机与嵌入式系统应用;2002年07期

10 郭士海,毛晓东;氧化锆氧分析仪的研制及改进[J];华北电力技术;2000年09期