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題 名 | 藉由設備改善及最適化操作提升媒組工場效益=To Increase the Reformer Profit by Modifying the Equipment and Optimizing the Operation Conditions |
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作 者 | 王淑麗; 施呈杰; 楊憲昌; 傅左籐; 陳淑雲; 黃耀輝; | 書刊名 | 石油季刊 |
卷 期 | 53:4 2017.12[民106.12] |
頁 次 | 頁21-37 |
分類號 | 468.8 |
關鍵詞 | 媒組反應; 操作嚴苛度; 進料; Reforming; Operation severity; Feedstock; |
語 文 | 中文(Chinese) |
中文摘要 | 藉由更換高機械強度的新觸媒,及增設小顆粒觸媒吹除裝置改善反應器及再生器高差壓,與換新熱交換器Packinox,修復壓縮機,使工場減少因高差壓造成的非計畫性停爐,改善後整體有以下好處:(1)觸媒活性好---增加提高煉量空間,可考慮其他媒組進料來源,如進口石油腦(N+A 油)及RFCC MCN 油的使用。於設計煉量時,重組油RON 可達102。新觸媒後表面積高,氯的注入量可減少2 成。(2)新媒組觸媒氫氣產率高配合壓縮機的修復,氫氣工場可不操作。(3)非原製程廠家觸媒優點---沒有觸媒循環的問題,crush strength 高有利減少差壓。(4)目前小觸媒吹除裝置維持於最佳的氮氣量吹除量,經過連續3.5 年操作,再沒有高差壓問題,解決多年來媒組操作的最大瓶頸,減少非計畫性停爐及減少30%以上的觸媒補充量。(5)新Packinox 安裝後洩漏指標已降到零,媒組油辛烷值平均值提高9 個值。(6)循環壓縮機高振動問題也因降低循環壓縮機的入口溫度及提高媒組進料IBP,使壓縮機進料分子量下降,以減少震動。來自蒸餾工場所產重石油腦(HSR),只能供應62%媒組煉量,不足之部分,可直接摻煉(N+A 油)提高煉量,提升進料量的瓶頸在於媒組的加氫脫硫區的分餾塔,調整分餾塔的塔溫及塔壓,有四種進料模式以彈性增加媒組進料量,使媒組反應系統煉量達102% 超煉量創造利潤,另探討將RFCC 產出的媒裂汽油中間餾份(MCN),加入成為媒組的進料的技術可行性。並且最佳化媒裂操作嚴苛度,比較操作於辛烷值102 與103 時的效益,從媒組油Loss 及辛烷值的增加效益計算,操作於辛烷值102 比辛烷值103 時,操作效益每天多30.9 萬。另因應將來汽油減苯的要求,進行提高CCR 進料IBP 及 EBP 的研究。綜合設備改善及最適化操作,可提升媒組工場效益,由103 年4 月平均煉量每天15,800 桶(月利潤0.99 億),到105 年9 月平均煉量26,500 桶(月利潤4.71 億),獲利顯著增加。 |
英文摘要 | By replacing the new catalyst with the higher crush strength and installing new counter current elutriation system, the long term issue about high delta pressure of the CCR reactor and regenerator can be resolved. The advantages of replacing the new catalyst with better crush strength and installing new counter current elutriation system are summarized as follows: (1) The catalyst activity is better than before and has the higher possibility to increase the throughput and charge imported naphtha(N+A) as the part of feedstocks. (2) Better catalyst activity is reached the reformat RON 102 when the feed rate is at the design value. (3) New catalyst can produce more hydrogen than the old one. Therefore, the refinery can be operated without the existing steam reforming plant to save the energy. (4) The new catalyst is not the original process licensing catalyst. This is the first try to utilize this catalyst in our CCR system. The result proves that there is no catalyst circulation problem for the new catalyst. (5) After replacing new catalyst, the surface area of the catalyst is high. The usage of chloride is 20% less the old case. (6) It can reduce the probability of unscheduled shutdown at high delta pressure for Rx and can save the amount of the make-up catalyst up to 30%. The flexible feed mode is applied to CCR system to increase the feed rate for CCR unit. Four types of feed modes are as follows: HSR+LSR (original design)、HSR+LSR+(N+A)、 HSR+(N+A)、full HSR。 Optimizeing the operation severity and studying the bottleneck can increase the feedstock IBP and EP for improving the profit of CCR operation. |
本系統中英文摘要資訊取自各篇刊載內容。