A kind of desulfurization catalyst and method for its preparation and hydrocarbon oil desulfurization
A technology of desulfurization catalyst and zinc oxide, which is applied in the fields of desulfurization catalyst and its preparation, hydrocarbon oil desulfurization, preparation of desulfurization catalyst, and desulfurization catalyst. Good, good wear resistance, good desulfurization activity effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0042] The present invention also provides a method for preparing a desulfurization catalyst, which comprises: (1) contacting SAPO molecular sieve with a rare earth metal salt solution to obtain a rare earth modified SAPO molecular sieve; (2) combining a zirconium dioxide source, zinc oxide, silicon oxide The slurry formed by mixing the source, rare earth modified SAPO molecular sieve and water is contacted with an acidic liquid to obtain a carrier mixture, which is then shaped, dried and calcined to obtain a carrier; (3) A compound containing an active metal is introduced into the carrier, dried and calcined to obtain a carrier. A desulfurization catalyst precursor; (4) reducing the desulfurization catalyst precursor under a hydrogen atmosphere to obtain a desulfurization catalyst.
[0043] According to the present invention, there may be various methods for obtaining the rare earth modified SAPO molecular sieve in step (1). There may be a first method, which includes: calcini...
Embodiment 1
[0087] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.
[0088] (1) Preparation of rare earth-zirconium sol. 2.85 kg of zirconium tetrachloride (Beijing Chemical Factory, analytically pure, 99% by weight) was added to 3.5 kg of 5% by weight nitric acid (chemically pure, produced by Beijing Chemical Factory) solution and stirred for 1 hour to obtain a colorless and transparent glue The solution is called zirconium sol. 1.261 kg of cerium nitrate (Sinopharm Chemical Reagent Co., Ltd., purity greater than 99.0% by weight) was dissolved in 0.2 kg of deionized aqueous solution and mixed with zirconium sol to obtain cerium-zirconium sol.
[0089] (2) Preparation of the carrier. 1.33 kg of expanded perlite (containing 0.77 kg of silica, 0.13 kg of zirconium dioxide, 0.07 kg of potassium oxide, and 0.03 kg of sodium oxide) was added to 0.5 kg of 2 wt% nitric acid solution, heated and stirred for 2 hours, filtered to...
Embodiment 2
[0098] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.
[0099] (1) Preparation of rare earth-zirconium sol. 1.17 kg of zirconium oxychloride (Aldrich company, analytical grade, 98.5 wt%) was added to 2.0 kg of 15 wt% hydrochloric acid (chemically pure, produced by Beijing Chemical Factory) solution and stirred and acidified for 1 hour to form a colorless and transparent glue The solution is called zirconium sol. Add 0.1 kg of lanthanum oxide (analytical grade, Sinopharm Group) into the zirconium sol, stir and mix evenly, and then dropwise add 25% by weight ammonia solution until a lanthanum zirconium sol is formed.
[0100] (2) Preparation of the carrier. Put 1.2 kg of diatomaceous earth (containing 1.00 kg of silica) and 6.00 kg of zinc oxide powder (Headhorse Company, purity 99.7% by weight), 0.24 kg of SAPO-34 molecular sieve (Nanjing Catalyst Branch, containing 0.20 kg of dry basis, silica-alumina) The...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More