As the sulfur content of crude oil quality and oil becoming heavier catalytic cracking technology is ever increasing and there are a large number of processing high carbon residue high metal content of the raw materials of plant into operation .

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Compared with cucumber seedlings grown under xenon lamp those under sulfur lamp were shorter and the cell number in the middle hypocotyls epidermis and cortex of them were more ( Fig.1 Table 1 ) .

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At present hydrodesulfurization ( HDS ) processe widely used in industry is not suitable for removing heterocyclic sulfur compounds from gasoline distillation to a deeper level since HDS processe will result in the saturation of olefins and significant reduction of octane number .

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Including : type of the liquid sulfur pump capacity pressure rating name and address of user phone number year of supply and service conditions of the jacket ball valve .

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Clean diesel fuel with sulfur content lower than 300 ug / g aromatics content lower than 25 % and the cetane number over 53 has been produced from straight run diesel and coker diesel under the proper operation conditions with the single-stage hydrogenation process .

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Touch the switch preparation after topping up air measuring cylinder and buret adjust the button Sulfur to the zero to the 0.000 the last number could not be0 .

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Thus desulfurization of cracked naphtha over ionic liquid catalyst having an AlCl_3 / Et_3NHCl mole ratio of 2 could obtain a sulfur removal rate of more than 70 % and a treated naphtha yield of 95 % with minor changes in octane number .

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Atmospheric and vacuum distillation units in a refinery process heavy crude oil with low sulfur content and high naphthenic acid number .

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The catalyst can reduce the content of sulfur in gasoline fraction without obvious decrease in its octane number and liquid yield .

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At the second stage the oxidation of polysulfide is dominated with the product of polymer sulfur & a - S8 . The point of demarcation of two stages is that the number of dissociate hydrosulfide is equal to the that of sulfur in solution .

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When FCC LCO is processed by hydrofining MCI its sulfur content can be reduced below 50 u03bc g / g cetane number can be increased by 8 ~ 12 units and the diesel yield can reach 95 % ~ 98 % ;

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