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Abstract£ºThe complex denitrogenation agent of coker diesel was studied by using Daqing coker diesel as feedstock. The optimum denitrogenation condition was determined by investigating the effect of reagent/oil ratio, reaction temperature, reaction time and sedimentation time on the removal of nitrogen. Comparative evaluation was carried out using coker diesel and removal oil as feedstock with complex denitrogenation-hydrofining combining process under the same condition of 360¡æ, 6.0MPa, LHSV of 1.5h-1, H2/oil of 800:1 and hydrogenation catalyst. The evaluation results show that compared to coker diesel, the aromatic content and nitrogen content of denitrogen oil is 6.9% and 31.5 units lower respectively, cetane number increased by 7.7 units. Therefore, the removal of nitrogen before hydrofining by using complex agent can effectively remove aromatics, improve the cetane number, produce clean diesel with low sulfur, low aromatic and high cetane number.
Keyword: coker diesel; complex denitrogenation; hydrofining

[ Last edited by ankang276 on 2011-7-13 at 15:43 ]
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Mally89(½ð±Ò+2): ¸ÐлӦÖú£¡~ 2011-07-13 21:16:12
ankang276(½ð±Ò+50, ·­ÒëEPI+1): 8 2011-07-14 19:28:28
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The performance and working conditions of complex denitrogenation agent for coker diesel were studied by using Daqing coker diesel as feedstock.
2Â¥2011-07-13 16:59:03
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zerohead

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For the second sentence, the phrase "The optimum denitrogenation condition was" could be changed to "The optimum denitrogenation conditions were" as there are more than "one" condition to be adjusted.
3Â¥2011-07-13 17:14:16
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zerohead

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For the 4th sentence, the phrase "the aromatic content and nitrogen content of denitrogen oil is 6.9% and 31.5 units lower respectively" could be changed to "the aromatic content and nitrogen content of denitrogen oil are 6.9% and 31.5 units lower, respectively."
4Â¥2011-07-13 17:16:58
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zerohead

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The final sentence is restructured as below:

Òò´Ë£¬²ÉÓÃÂçºÏÍѵª¼Á£¬ÔÚ½¹²ñ½øÐмÓÇâ¾«ÖÆÇ°£¬ÏÈÍѳýÆäÖеĵª»¯Î¿ÉÓÐЧÍѳý·¼Ìþ£¬Ìá¸ßÊ®ÁùÍéÖµ£¬Éú²úµÍÁò¡¢µÍ·¼¡¢¸ßÊ®ÁùÍéÖµµÄÇå½à²ñÓÍ¡£

Therefore, by utilizing complex denitrogenation agent before hydrofining, it can effectively remove nitrogen compounds and aromatics (from the xxx), and increase cetane number, leading to the production of a clean diesel with low sulfur, low aromatic and high cetane number.
5Â¥2011-07-13 17:27:11
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