环氧乙烷气体检测器的量程及报警值设计  

Design of Range and Alarm Setting for Ethylene Oxide Gas Detector

作　　者：傅笛 FU Di(SINOPEC Shanghai Engineering Co.,Ltd.Shanghai 200120,China)

机构地区：[1]中石化上海工程有限公司,上海200120

出　　处：《自动化与仪器仪表》2024年第8期307-310,共4页Automation & Instrumentation

摘　　要：为解决环氧乙烷气体检测器在实际工程设计中遇到的参数设计问题,介绍了GBZ 2.1中对职业接触限值的几种重要定义和GB/T 50493中的气体检测器选型设计参数的计算方法。以职业接触限值概念作为切入口,引入峰值接触浓度的概念,分析阐述了在针对环氧乙烷制定工作场所的职业暴露控制措施并采用气体检测器作为主要的在线监测手段时,如何计算检测器量程及合理的报警值,以达到更有效的保护力度。并通过对比以往多装置设计参数和仪表选型,以及枚举其他常见有毒气体在设计中会遇到的同类问题,分析了未来化工装置在选择有毒气体检测器参数时的发展方向。To address the parameter design issues encountered in practical engineering design of ethylene oxide gas detectors,this article introduces several important definitions of occupational exposure limits in GBZ 2.1 and the calculation method of gas detector selection and design parameters in GB/T 50493.Taking the concept of occupational exposure limit as the starting point and introducing the concept of peak exposure concentration,this article analyzes and elaborates on how to calculate the detector range and reasonable alarm values when formulating occupational exposure control measures for ethylene oxide in the workplace and using gas detectors as the main online monitoring method,in order to achieve more effective protection.And by comparing the design parameters and instrument selection of multiple devices in the past,as well as enumerating similar problems encountered in the design of other common toxic gases,the development direction of selecting toxic gas detector parameters in future chemical plants is analyzed.

关 键 词：环氧乙烷 职业暴露风险 职业接触限值 峰值接触浓度 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]