A method for producing lubricating oil base oil
A technology for lubricating base oil and hydrocracking tail oil, which is applied in the directions of lubricating compositions, chemical instruments and methods, petroleum industry, etc. The effect of skeleton silicon-alumina structure uniformity, maintaining uniformity, high catalytic activity and isomerization ability
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[0031] The preparation method of the used b molecular sieve of hydrocracking catalyst carrier of the present invention specifically comprises the steps:
[0032] (1) Treat the raw powder of β molecular sieve under normal pressure and dynamic steam conditions, the treatment temperature is 500~650℃, and the treatment time is 5~10 hours;
[0033] The present invention adopts the raw powder of beta molecular sieve synthesized by conventional hydrothermal method. The chemical SiO of the used molecular sieve powder 2 / Al 2 o 3 Molar ratio 22.5~28.5, Na 2 The O content is 1.0wt%~3.0wt%, and the relative crystallinity is above 95%;
[0034] The hydrothermal treatment condition adopted in the present invention is to use 100wt% water vapor, and the water vapor passes through the molecular sieve at 50-100L / h per kilogram of β molecular sieve. In order to make the molecular sieve treatment more uniform, it is best to place the molecular sieve in a rotating container, and the water va...
Embodiment 1
[0045] Take the original powder of β molecular sieve (provided by Sinopec Catalyst Fushun Branch), its chemical SiO 2 / Al 2 o 3 The molar ratio is 25.5, the relative crystallinity is 96%, Na 2 O content is 2.45wt%, in its skeleton structure, through 29Si MAS NMR spectrum, the distribution of silicon atoms in different coordination states is obtained as follows: Si (4Al) is 7.6%, Si (3Al) is 30.6%, Si (2Al) is 32.3%, Si (1Al) is 21.0% %, Si (0Al) is 8.5%. Take 1000g of the above-mentioned molecular sieve, put it into a tube furnace, adopt the method of temperature program (heating rate: 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C, the flow rate of water vapor is 50L / hour, the tube furnace is heated to 550°C, and the constant temperature time is 6 hours. The obtained molecular sieve is coded as BS-1, and its properties are shown in Table 1.
Embodiment 2
[0047] Get the former powder of β molecular sieve with embodiment 1. Take 1000g of the above-mentioned molecular sieve, put it into a tube furnace, adopt the method of temperature program (heating rate: 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C, the flow rate of water vapor is 70L / hour, the tube furnace is heated to 600°C, and the constant temperature time is 8 hours. The obtained molecular sieve is coded as BS-2, and its properties are shown in Table 1.
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