浅析苯乙烯储罐VOCs排放影响因素及保冷施工方法

ON INFLUENCING FACTORS OF VOCS EMISSION FROM STYRENE STORAGE TANK AND COLD INSULATION CONSTRUCTION METHOD

苯乙烯具有易挥发、易聚合等主要理化特性,其VOCs不但会造成环境污染,而且会对人体造成伤害,疑似长期接触具有致癌性。因此对苯乙烯储罐VOCs排放的影响因素进行更深刻的分析,提高对其认识,以便于采取相应合理措施进行治理,以及做好储罐的保冷施工尤为重要。文章对储罐设计压力、操作压力、操作温度、保冷厚度、太阳辐射热和环境温度等影响因素分别进行了计算、分析和对比说明,从而对苯乙烯储罐的VOCs排放规律有了更深一步的认识,为同类罐区的VOCs排放提供了借鉴经验,为储罐VOCs的科学治理提供了设计基础。另外,文章结合储罐保温的做法、管道及设备的保冷做法,同时结合储罐自身的结构特点,提出了苯乙烯储罐的保冷施工安装方法,可为同类项目的建设和相关标准规范的编制提供一定的借鉴经验和指导。

Styrene has the main physical and chemical characteristics of easy volatility and polymerization.Its VOCs will not only cause environmental pollution,but also bring harm to human body.It is suspected that long-term exposure to styrene is carcinogenic.Therefore,it is particularly important to have deeper analysis and understanding of the influencing factors of VOCs emission from styrene storage tanks so as to take corresponding and reasonable measures for treatment and do a good job in the cold insulation construction of storage tanks.In this paper,the influencing factors of tank design pressure,operating pressure,operating temperature,cold insulation thickness,solar radiant heat and ambient temperature are calculated,analyzed and compared respectively so as to have a deeper understanding of VOCs emission law of styrene storage tank and provide reference experience for VOCs emission in similar tank areas.It provides a design basis for the scientific treatment of VOCs in storage tanks.In addition,this paper puts forward the cold insulation construction and installation method of styrene storage tank combined with the thermal insulation method of storage tank,the cold insulation method of pipeline and equipment,and the structural characteristics of storage tank.This can provide some reference experience and guiding significance for the construction of similar projects and the preparation of relevant standards and specifications.