Method for producing sulfur-free clean gasoline
A clean and gasoline technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems such as the limited decrease of gasoline olefin content, the influence of the selectivity of the target product, the limitation of the flexibility of the device operation, etc., and the operation cycle of the device can be achieved Long, high selectivity and activity, low octane loss effect
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[0038] The preparation method of the hydrodemercaptan catalyst is as follows: the aqueous solution of copper-containing compound, zinc-containing compound and phosphorus-containing compound is heated at 60-100°C to obtain a stable co-impregnation solution, and the above-mentioned co-immersion solution is impregnated once saturated It is obtained by impregnating the carrier, drying at 80-150°C for 2-8 hours, and roasting at 300-600°C for 5-10 hours.
[0039] In the method of the present invention, the preparation of the amorphous alumina, silicon-containing alumina and titanium-containing alumina carrier required for the hydrodesulfurization catalyst and hydrodemercaptan catalyst can be made of amorphous alumina, silicon-containing alumina or Titanium-containing alumina is prepared by adding peptizer, extrusion aid or silica sol, kneading, extruding, drying at 80-150°C for 2-8 hours, and roasting at 500-650°C for 2-5 hours. The amorphous alumina, silicon-containing alumina and ...
example 1
[0051] In this example, an alumina carrier shared by a hydrodesulfurization catalyst and a hydrodemercaptan catalyst is prepared.
[0052] Weigh 1000g pseudo-thin water aluminum hydroxide powder (Al 2 o 3 Dry basis content is 78wt%), adding Al 2 o 3 5wt% squid powder extrusion aid on a dry basis, 200mL of a 10% nitric acid aqueous solution, mixed and rolled to form a plastic powder, and a cylindrical strip with a diameter of 1.5mm was prepared with an extruder, and dried at 120°C 8 hours, calcination at 500° C. for 5 hours to prepare the catalyst carrier T-1.
example 2
[0054] In this example, a selective hydrodesulfurization catalyst is prepared by a step-by-step impregnation method.
[0055] Press Catalyst on P 2 o 5 The content is 1.5wt%, K 2 O content is 2.0wt%, take quantitative phosphoric acid, potassium nitrate, add deionized water, make 120mL impregnating solution, then, spray on the catalyst carrier prepared in Example 1 of 160g. P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%) / Al 2 o 3 Catalyst intermediate.
[0056] MoO on Catalyst 3 The content is 13.0wt% and the CoO content is 4.0wt%. Take quantitative molybdenum oxide and basic cobalt carbonate, add it to deionized water with 8% ammonia content, make 60mL impregnating solution, and then spray it in the middle of 80g of the above catalyst physically. Drying at 120°C for 8 hours and calcining at 490°C for 6 hours prepared a selective hydrodesulfurization catalyst, numbered ME-1. The specific surface area and pore volume properties of the catalysts were determined by low-temperature nitr...
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