Weifang xylene xylene harm _ _ preferred east-Chemical (view)

Xylene production method, xylene recovered from the coking by-product. Xylene and benzene production co-products, depending on the boiling point of the components of crude benzene, extracted by distillation fraction boiling range of 135 ~ 145 ℃, was xylene. 2, light gasoline (initial boiling point of about 138 ℃) Platinum restructuring atmospheric distillation method using interception fraction greater than 65 ℃, the first by molybdenum catalyst, catalytic hydrogenation emerge harmful impurities, and then platinum catalyst to revitalize two toluene, solvent extraction with diethyl ether glycol, and then the distillation tower to obtain as benzene, toluene, xylene and the like products. 3, toluene disproportionation method. This method is in the catalyst, so that a toluene methyl transfer to another toluene to produce benzene and xylene. The reaction is DF-166 catalyst (hydrogen form mordenite missing aluminum) xylene density in reforming toluene (nitration grade) and re-circulating hydrogen (85% -90%) as the raw material prices of xylene, the reaction temperature of 400 ± 2 Under ℃, the pressure is about 2MPa other conditions, the reaction of benzene and xylene. 4, the oil light fraction after mixing benzene hydrogenation refining, catalytic reforming, separation derived xylene. Or coking crude benzol washing, fractionation derived. March 30 domestic paraxylene market prices were slightly higher boiling point xylene, paraxylene recent domestic operating rate remained more than 7 percent, the recent Dragon aromatics plant is expected to have access, in Asia PX plant operating rate at 7 percent. Recent oil price shock run, paraxylene external disk latest closing price of $ 885 / ton CFR China, external disk prices pull up the domestic market, is expected paraxylene market prices will continue to rise xylene or harm _ _ Weifang xylene preferred East Shun Chemical (Views) provided by Jinan East-Chemical Co., Ltd. Jinan East-Chemical Co., Ltd. (dongshunhuagong.com) is a professional, "styrene acrylate, butyl glycol, cyclohexane, epichlorohydrin" company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "East Shun" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the East-Chemical has won the trust of customers in all chemical products, establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!