Hydro-conversion catalyst for heavy oil and residual oil and its preparing process
A residue hydrogenation and catalyst technology, which is applied in the direction of naphtha catalytic reforming, etc., can solve the problem of inability to use heavy oil, residue hydrogenation conversion process, poor denitrification and decarbonization activity stability, and catalyst surface acidity regulation effect. Poor and other problems, to achieve the effect of low cost, easy molding, no environmental pollution
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[0021] The specific optimum operating conditions for the preparation of the silicon-containing aluminum hydroxide used in the present invention are:
[0022] The concentration of sodium metaaluminate solution is 5gAl 2 o 3 / l~60gAl 2 o 3 / l. The silicon-containing compound is preferably sodium silicate (commonly known as water glass), and the silicon dioxide contained in the sodium silicate solution is adjusted to be 5g / l to 40g / l, and the amount of the silicon-containing compound accounts for 0% to 0% of the total amount by weight. 50%. The gel forming temperature is controlled at 15°C to 35°C according to the desired pore properties of the silicon-containing aluminum hydroxide, preferably between 18°C and 30°C, and most preferably between 18°C and 25°C. The concentration of carbon dioxide is controlled at 10v%-50v% (preferably 20v%-40v%). When the pH value of the glue-forming liquid is controlled to be 9-12, carbon dioxide is stopped. Aging may or may not be perfor...
Embodiment 1
[0027] (1) Preparation of silicon-containing aluminum hydroxide
[0028] Set the concentration to 30gAl 2 o 3 / l of sodium metaaluminate solution is placed in a gel-forming tank, the temperature is controlled at 23°C, and the concentration of SiO is 20g 2 / l sodium silicate solution, stir evenly, add sodium silicate as SiO 2 The content calculated in the silicon-containing aluminum hydroxide is 2.0% by weight, and the carbon dioxide gas with a concentration of 30v% is introduced until the pH value of the slurry is 11. The carbon dioxide gas is stopped, and the slurry is aged for 0.5hr under stirring, and then carried out Filter, add deionized water to the filter cake and re-pulp and stir, and then add the remaining part of the calculated amount of sodium silicate solution to make the silicon-containing compound with SiO 2 The final content calculated in the silicon-containing aluminum hydroxide is 8.0m%, and then aged for 0.5 hours, the aging temperature is 25 ° C, filtered...
Embodiment 2
[0032] (1) The preparation of silicon-containing aluminum hydroxide is the same as in Example 1 (1)
[0033] (2) Preparation of catalyst
[0034] Compared with embodiment 1 (2), be that 9.0% dilute ammonia water dissolving 20.0g analytical pure boric acid with concentration is mixed with 200ml B-NH 3 Solution, to get solution C, correspondingly reduce the amount of water in mixed solution B by 200g, increase peptizing acid or TiCl 3 The amount of the solution is to neutralize the added ammonia water, first add C to A by spraying, and add 20.0 g of the remaining part of the calculated amount of boric acid in the form of fine powder solids, mix well and then knead 0.5 to 1.0 After 1 hour, add mixed solution B and knead again, and other material consumption and operating conditions are identical with embodiment 1 (2), namely cost example.
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