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一九七九年,引进了日本三套30万吨/年乙烯成套装置。每一套有四台乙烯产品球罐(以下简称乙烯球罐)。每台总重(未包括内梯重量)为269.4吨。价格为:41.095万美元。设计条件物料名称液态乙烯总容积1697.4m~3有效容积1527.7m~3内径14800 mm设计压力21.6kgf/cm~2(表)(球罐顶部)设计温度35℃液体比重0.442腐蚀裕度1.5mm焊缝系数1.0水压试验压力32.4 kgf/cm~2(表)气压试验压力21.6 kgf/cm~2(表)地震系数0.15(水平方向)风压35(?) kgf/m~2
In 1979, Japan introduced three sets of 300,000 tons / year ethylene plant. Each set has four ethylene products spherical tank (hereinafter referred to as the vinyl tank). Each total weight (not including the weight of the ladder) was 269.4 tons. Price: 410,950 US dollars. Design conditions Material name Total volume of liquid ethylene 1697.4m ~ 3 Effective volume 1527.7m ~ 3 ID 14800 mm Design pressure 21.6kgf / cm ~ 2 (top of the tank) Design temperature 35 ℃ Liquid specific gravity 0.442 Corrosion margin 1.5mm Welding Sew factor 1.0 Hydrostatic test pressure 32.4 kgf / cm ~ 2 Air pressure Test pressure 21.6 kgf / cm ~ 2 Seismic coefficient 0.15 (horizontal direction) Wind pressure 35 (?) Kgf / m ~ 2