Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method
A desulfurization catalyst and oxide technology, which is applied in the field of hydrocarbon oil desulfurization, can solve problems such as poor wear resistance, low desulfurization activity, and unstable structure, and achieve good wear resistance, low sulfur content, and less coke formation volume effect
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[0043] The present invention also provides a preparation method of the desulfurization catalyst provided by the present invention, the method comprising: (1) mixing a precursor of bismuth oxide, a rare earth metal compound, water and an acidic liquid to obtain a rare earth-bismuth sol; (2) mixing a non-aluminum paste A binder, a silicon oxide source, a first metal oxide, water and an acidic liquid are mixed to form a slurry, and contacted with the rare earth-bismuth sol to obtain a carrier mixture, and the carrier mixture is subjected to molding, first drying and first calcination, Obtain a carrier; (3) introduce the precursor of the active metal on the carrier, and carry out the second drying and the second roasting to obtain the catalyst precursor; (4) reduce the catalyst precursor under a hydrogen atmosphere to obtain the desulfurization catalyst.
[0044] According to the present invention, the precursor of bismuth oxide is bismuth oxide or a substance that can be transfor...
Embodiment 1
[0076] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.
[0077] (1) Preparation of rare earth-bismuth sol. 1.45 kg of bismuth oxide (Beijing Chemical Plant, analytically pure) was added to 3.5 kg of 5% by weight nitric acid (Beijing Chemical Plant, chemically pure) solution and stirred for 1 h to obtain a colorless and transparent bismuth sol. 430 g of lanthanum carbonate (Sinopharm Chemical Reagent Company, lanthanum oxide content 45% by weight) was dissolved in 0.2 kg of deionized aqueous solution and mixed with bismuth sol to obtain lanthanum bismuth sol.
[0078] (2) Prepare the carrier. 2.84kg of zirconium tetrachloride (Beijing Chemical Plant, analytically pure) is slowly added to 3.1kg of a concentration of 5% by weight nitric acid solution to make pH=2.0, and slowly stirred to avoid the precipitation of zirconia crystals to obtain colorless and transparent zirconium Sol;
[0079] Mix 2.40kg of kaolin ...
Embodiment 2
[0086] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.
[0087] (1) Preparation of rare earth-bismuth sol. 0.9 kg of bismuth oxide was added to 2.0 kg of 15% by weight hydrochloric acid solution and stirred for 1 hour to form a colorless and transparent bismuth sol. Add 300 g of cerium oxide (Sinopharm Chemical Reagent Company, analytically pure) into the bismuth sol, stir and mix evenly, then add 25% by weight ammonia solution dropwise until the cerium bismuth sol is formed.
[0088] (2) Prepare the carrier. 4.04kg of titanium tetrachloride (Beijing Chemical Plant, analytically pure) is slowly added to 3.1kg of a concentration of 5% by weight nitric acid solution to make pH=1.0, and slowly stirred to avoid the precipitation of titanium oxide crystals to obtain colorless and transparent titanium Sol;
[0089] Mix 1.63kg of expanded perlite (catalyst Nanjing branch, containing 1.6kg on a dry basis) with 2.5k...
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