Method for preparing narrow fraction nontoxic high-purity isohexane
A technology of isohexane and narrow fraction, which is applied in the field of preparation of nontoxic and high-purity isohexane with narrow fraction, can solve the problems of not being able to meet the environmental protection requirements of safe production of nontoxic narrow fraction solvent oil from plant extract oil, and achieve remarkable desulfurization effect, Simple production process and high economic efficiency
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[0015] (1), select active metal nickel to be benzene series catalytic hydrogenation catalyst:
[0016] The active center of the selected catalyst is metallic nickel, the shape is cylindrical sheet (Φ5mm×5mm), the bulk density is 1~1.4 liters / kg, and the specific surface area is 95~180cm 2 / kg, strength ≥140N / cm, put it in the hydrogenation reactor, when the catalytic reforming raffinate enters the hydrogenation reactor together with industrial hydrogen, it contacts with the catalyst to carry out a heterogeneous reaction, and the hydrogenation removal is carried out. Benzenes.
[0017] (2), catalytic hydrogenation dearomatization and sulfur:
[0018] The raw material catalytic reforming raffinate and industrial hydrogen are preheated to 160°C and pumped into the hydrogenation reactor synchronously. Under the action of benzene series catalytic hydrogenation catalyst, the ratio of industrial hydrogen to catalytic reforming raffinate is 6.4:100. , liquid benzene space velocity 0...
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