Abstract: This paper mainly discusses the insulation structure design and insulation material selection of petrochemical pipelines. Through the performance analysis of commonly used insulation materials, it is proposed that the selection of insulation materials should comprehensively consider factors such as thermal conductivity, service temperature range, engineering cost, and energy-saving benefits. Taking a steam pipeline of a petrochemical enterprise as an example, different insulation design schemes are compared. The results show that the use of new insulation materials with lower thermal conductivity and composite insulation structures can not only reduce the insulation thickness of the pipeline and lower heat loss but also have better life cycle costs and social benefits.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">petrochemical industry, pipeline, insulation materials, structural design, heat loss, aluminum silicate cotton, aerogel, composite material

摘要： 探讨了石油化工管道的保温结构设计和保温材料选择。通过对常用保温材料的性能分析，提出了选择保温材料时应综合考虑导热系数、使用温度范围、工程费用、节能效果等因素。同时，还以某石油化工企业某根蒸汽管道为例，对不同保温设计方案进行了对比，结果表明，采用导热系数更低的新型保温材料和复合绝热结构，不仅可以减小管道保温厚度，降低散热损失，还具有更好的全生命周期成本和社会效益。

关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">石油化工, 管道, 保温材料, 结构设计, 热损失, 硅酸铝棉, 气凝胶, 复合材料