浅析丁二烯储罐保冷设计及施工方法

COLD INSULATION DESIGN AND CONSTRUCTION METHODS FOR BUTADIENE STORAGE TANK

丁二烯具有易燃、易爆、高度危害等特性,且在高温下储存易聚合。因此,维持丁二烯在低温下储存而防止其发生聚合尤为重要。为维持丁二烯的低温储存以及减少其冷损失,其储罐通常采用保冷储存方案,储罐的吸热计算不仅要考虑与自然环境的对流传热,同时需考虑太阳辐射传热和自然环境的辐射传热。目前,规范对球罐的保冷层、外防护层的施工方法无详细规定。文中对储罐的保冷设计、储罐的吸热计算进行了阐述,并通过实例对储罐的吸热计算进行分析,同时对球罐的保冷层、防护层施工提出了可供借鉴的方法。

Butadiene is flammable,explosive and highly hazardous,and is easy to polymerize when stored at high temperature.Therefore,it is particularly important to maintain the storage of butadiene at low temperature to prevent its polymerization.In order to maintain the low-temperature storage of butadiene and reduce its cold loss,the storage tank usually adopts cold insulation method.The heat absorption calculation of storage tank should not only consider the convective heat transfer with the natural environment,but also the solar radiation heat transfer and the radiation heat transfer in the natural environment.The construction methods for cold insulation layer and external protective layer of spherical tank are not specified in the current specifications.This paper discusses the cold insulation design and heat absorption calculation of storage tank,analyzes the heat absorption calculation of storage tank through examples,and puts forward some methods for reference for the construction of cold insulation layer and protective layer of spherical tank.