Hydrotreating catalyst production method
A hydrogenation treatment and catalyst technology, which is applied in the direction of physical/chemical process catalysts, aromatics hydrogenation refining, heterogeneous catalyst chemical elements, etc., can solve the problem that the catalyst activity needs to be improved, which is not conducive to the sulfidation conversion of active metals, and poor coordination And other issues
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[0027] The preparation method of the hydrotreating catalyst provided by the invention specifically comprises:
[0028] (1) Add alkaline solution B containing tungsten to acidic solution A containing magnesium and aluminum until the pH is 10-12 to obtain a mixed slurry;
[0029] According to the content ratio of the catalyst components, the acidic solution A containing magnesium and aluminum is prepared. The aluminum-containing salt can be one or more of aluminum chloride, aluminum nitrate, aluminum sulfate, etc., and the magnesium-containing salt can be magnesium chloride and magnesium nitrate. One or more of soluble magnesium salts such as magnesium sulfate, the acidity can be adjusted with one or more of inorganic or organic acids such as hydrochloric acid, nitric acid, acetic acid, etc. It is advisable that the acidic salt solution is not turbid;
[0030] The auxiliary agent can be introduced in the acidic solution A according to the proportion of the catalyst. The auxiliar...
Embodiment 1
[0044] Add 1000mL of clean water into a gelling tank and raise the temperature to 45°C;
[0045] Add 800mL of clean water, 3mL of concentrated hydrochloric acid, 71g of aluminum chloride, 7.5g of magnesium chloride, and 1.65g of ammonium dihydrogen phosphate into a container, stir to dissolve it, and drop in the 2 100mL of 42g / 100mL dilute water glass solution, stir evenly, and prepare acidic solution A;
[0046] Prepare 800mL of sodium hydroxide solution with a concentration of 15wt% in a container, add 7.5g of sodium tungstate and 0.8g of polyethylene glycol with a molecular weight of 6000, stir and dissolve, and prepare alkaline solution B;
[0047] Fix the flow rate of the acidic solution A, adjust the flow rate of the alkaline solution B, and flow into the gelation tank, control the gelation temperature to 45°C, the pH of the slurry to 10.8±0.2, and complete the gelation within 30 minutes. When the reaction is over, the A solution and B solution must all be added to the ...
Embodiment 2
[0056] The whole preparation process of the catalyst is the same as in Example 1, except that when preparing the alkaline solution B, 1.2 g of N-methylacetamide is added, and when preparing the alkaline solution D, 1.8 g of N-methylformamide is added to obtain the present invention Catalyst B.
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