Process for producing sweet gas for poor-quality gasoline distillate
A technology of inferior gasoline and distillate, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of unqualified mercaptan sulfur and reducing sulfur content, etc.
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example 1
[0038] This example prepares a kind of highly active MoO by step-by-step impregnation method 3 (13.0wt%)-CoO(4.0wt%)-P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%) / Al 2 o 3 catalyst.
[0039] Take by weighing 1000g pseudo-thin water aluminum hydroxide powder (Al 2 o 3 Dry basis content is 78wt%), adding accounted for Al 2 o 3 Dry basis 5wt% squash powder extrusion aid, mass concentration 10% nitric acid aqueous solution 200ml, mix and roll and mix into plastic powder, use extruder to prepare cylindrical strips with a diameter of 1.5mm, dry at 120°C 8 hours, calcination at 500°C for 5 hours to prepare a catalyst carrier;
[0040] 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, be made into 120ml impregnating solution, then, spray on the above-mentioned catalyst carrier of 160g. P 2 o 5 (1.5wt%)-K 2 O-(2.0wt%) / Al 2 o 3 Catalyst intermediate.
[0041] MoO on Catalyst 3 The co...
example 2
[0043] This example co-impregnation method to prepare a low activity MoO 3 (3.0wt%)-CoO(1.0wt%)-K 2 O(2.0wt%) / Al 2 o 3 catalyst.
[0044] The catalyst carrier was prepared with reference to Example 1.
[0045] MoO on Catalyst 3 content of 3.0wt%, CoO content of 1.0wt% and K 2 O content is 2.0wt%, take quantitative ammonium molybdate, cobalt nitrate and potassium nitrate, add deionized water, be made into 110ml impregnation liquid, then, spray on the above-mentioned catalyst carrier of 165g. Drying at 120°C for 8 hours and calcining at 500°C for 4 hours prepared MoO 3 (3.0wt%)-CoO(1.0wt%)-K 2 O(2.0wt%) / Al 2 o 3 catalyst. The catalyst is referred to as LAC, and the specific surface area and pore volume properties of the catalyst are shown in Table 1 by low-temperature nitrogen adsorption BET method.
[0046] The physical property of table 1 example 1~instance 2 catalyst
[0047] project
[0048] Specific surface area, m 2 / g
example 3
[0050] This example shows the desulfurization effect of inferior FCC gasoline.
[0051] (1), raw oil sweetening
[0052] The sweetening oxidant of feedstock oil adopts commercial AFS-12 catalyst (purchased from Petroleum University), at a pressure of 0.5MPa, a temperature of 35°C-45°C, and a volume space velocity of 2.0h -1 , Gas-oil volume ratio (air / catalyst) 4:1 for deodorization.
[0053] (2) Cutting of raw oil light distillate and heavy distillate
[0054] With 50°C as the cut point temperature, FCC gasoline is separated into 50°C heavy fraction. Table 2 lists the properties of FCC gasoline, 50°C heavy fraction.
[0055] Properties of FCC gasoline, light ends and heavy ends in Table 2 Example 3
[0056] project
[0057] (3) Hydrodesulfurization of heavy fractions >50°C
[0058] The evaluation tests were carried out on a fixed bed reactor setup charged with 50 ml of a high activity HAC and a low activity LAC catalyst. The volume ratio of the former to the l...
PUM
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