Abstract: 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.

Key words: styrene, VOCs emission, influencing factor, tank cold insulation