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題 名 | Improvement of the Operation Cycle Time of a Naphtha Hydrotreating Unit by Controlling the Pressure Drop=控制石油腦加氫處理工場的差壓以延長其操作週期 |
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作 者 | 張志成; 周澤川; | 書刊名 | 中國工程學刊 |
卷 期 | 21:1 1998.01[民87.01] |
頁 次 | 頁73-80 |
分類號 | 457.5 |
關鍵詞 | 差壓; 加氫處理反應器; 觸媒老化; Pressure drop; Hydrotreating reactor; Catalyst deactivation; |
語 文 | 英文(English) |
中文摘要 | 本文探討石油煉製程序中加氫處理工場固定床反應器內差壓快速昇高的原因並加以鑑定及改善。結果顯示,差壓是由進料中溶氧與烯類引起的聚合反應及由工場斷電造成反應器氫氣缺乏引起的脫氫反應兩者產生的焦碳沉積於觸媒床所致。此問題可藉由在進料管線中裝設氧氣吹除裝置及於觸媒床上端放置高空隙低活性的觸媒加以改善。經改善後,加氫工場可操作在原設計煉量,且操作週期不受差壓的限制。本文同時發展一個方法,可用來觀察工場的操作週期。 |
英文摘要 | The quick buildup of higher pressure drop in the fixed-bed reac- tor of a hydrotreating unit of a petroleum process is identified and improved. The results indicated that coke deposits formed in the catalyst bed are due to both the polymerization initiated by the dissolved oxygen in the presence of olefins, and the dehydrogenation reaction formedby hydrogen deficiency in the event of power failure in the unit. Thebuildup of pressure drop in the hydrotreating unit is improved by add-ing both an oxygen stripper in the feed stream to minimize the dis-solved oxygen and catalysts with high void fraction and low activity inthe top of the reactor to increase the tolerance of coke deposits. Afterrevamping, the hydrotreating unit can operate at design throughput andthe operation cycle time is not limited by the pressure drop. The re-sults of this study are a breakthrough in the study of hydrotreating units.A correlation method was also developed to check the operation cycletime of the hydrotreating unit. |
本系統中英文摘要資訊取自各篇刊載內容。