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公开(公告)号:US5804038A
公开(公告)日:1998-09-08
申请号:US925229
申请日:1997-09-08
申请人: David K. Nelsen
发明人: David K. Nelsen
CPC分类号: C10B1/04
摘要: The metal stresses in a delayed coke drum are reduced by externally cooling the coke drum near the junction of the drum shell and the supporting skirt thereof during the quench step. This reduces the metal stresses at the area around the welds of the drum skirt.
摘要翻译: 在淬火步骤期间,通过在鼓壳和其支撑裙部的接合处附近的焦炭鼓外部冷却来减少延迟焦炭鼓中的金属应力。 这降低了鼓裙边缘焊缝周围的金属应力。
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公开(公告)号:US5891310A
公开(公告)日:1999-04-06
申请号:US879573
申请日:1997-06-20
申请人: David K. Nelsen
发明人: David K. Nelsen
摘要: The cycle time for a delayed coker unit is reduced by externally heating the coke drum near the junction of the drum shell and the supporting skirt thereof prior to beginning the hot coker feed fill step. This reduces the thermal stresses at the area around the welds of the drum skirt.
摘要翻译: 在开始热焦化器进料填充步骤之前,通过在鼓壳和其支撑裙部的接合处附近对焦炭鼓进行外部加热来减少延迟焦化装置的循环时间。 这降低了鼓裙的焊缝周围的热应力。
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