回收火炬气用干式气柜橡胶密封膜的研制与应用

Preparation and application of rubber sealing film for dry gas holder in recovery of torch gas

在分析炼油厂火炬气回收现状及火炬气介质成分的基础上,从胶料配方设计、胶布结构设计及橡胶密封膜整体成型工艺等方面介绍了干式气柜用橡胶密封膜的研制情况。结果表明,以丁腈橡胶与质量分数30%～50%的聚氯乙烯共混、配以多种防老剂并用的体系及以癸二辛酯与液体古马隆树脂并用的增塑体系可大幅度提高制品的耐臭氧、耐硫化氢性能及动态屈挠性能;以帘线布作为胶布的骨架材料满足了胶布结构强度及抗屈挠性能的要求;橡胶密封膜整体成型工艺确保了胶膜整体结构的气密性、尺寸稳定性及安全性。与国外同类制品进行对比及实际应用结果证明,该气柜用橡胶密封膜达到国外同类产品的水平,能够用于炼油厂火炬气回收。

The rubber sealing film for dry gas holder in the recovery of torch gas in refinery component of refinery torch gas was analyzed, including prescription design of glue, structure design of rubberized fabric and integral moulding process of rubber sealed film. The results showed that blending NBR and 30% ∼ 50% PVC could improve the ozone resistance, hydrogen sulfide resistance and dynamic flex properties. The structure design of rubberized fabric satisfied the requirement of structure strength and flex resistance. The integral moulding process insured the sealing, dimension stability and security. The rubber sealing film used in gas tank reached the level of foreign alike products.