Hydrogen desulfurization catalyst and preparation method thereof
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A technology for hydrodesulfurization and catalyst, which is applied in the field of desulfurization and can solve the problems of inability to achieve and the reduction of catalyst desulfurization activity.
Inactive Publication Date: 2013-08-07
SHENYANG SANJUKAITE CATALYST
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Abstract
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Problems solved by technology
Considering the subsequent reuse of this part of the waste carrier agent, those skilled in the art generally grind the waste alumina agent and mix it into the commercially available alumina powder to prepare the hydrodesulfurization catalyst by kneading method, but the waste alumina When the alumina agent is mixed into the purchased alumina, it is necessary to strictly control the amount of the alumina waste agent added. The experimental data shows that the desulfurization activity of the catalyst will decrease by 20% when the amount of the alumina waste agent added exceeds 5%, so the use of The addition of alumina waste agent achieves a balance between catalyst preparation cost and catalyst activity, which has not yet been achieved
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Embodiment 1
[0010] 1) Weigh 260g of alumina waste agent into the muffle furnace, roast at 450°C for 6 hours, and cool to room temperature;
[0011] 2) Weigh 60g of nickel oxide and 230g of CMC into the product in step 1), stir and mix evenly;
[0012] 3) Kneading and molding the mixture in step 2) to obtain a molding;
[0013] 4) Put the molding obtained in step 3) into an oven, dry at 100°C for 2 hours, and then bake at 460°C for 2 hours to obtain the hydrodesulfurization catalyst 1#, the active group of the hydrodesulfurization catalyst 1# Min content is 20%.
Embodiment 2
[0015] 1) Weigh 260g of alumina waste agent into the muffle furnace, roast at 550°C for 2 hours, and cool to room temperature;
[0016] 2) Weigh 75.5g basic nickel carbonate, 45g molybdenum trioxide, 30g cellulose powder, add to the product in step 1), add appropriate amount of water and stir to mix evenly;
[0017] 3) Kneading and molding the mixture in step 2) to obtain a molding;
[0018] 4) Put the molding obtained in step 3) into an oven, dry at 150°C for 2 hours, and then bake at 550°C for 4 hours to obtain the hydrodesulfurization catalyst 2#, the active group of the hydrodesulfurization catalyst 2# Min content is 20%.
Embodiment 3
[0020] 1) Weigh 260g of alumina waste agent into the muffle furnace, roast at 500°C for 3 hours, and cool to room temperature;
[0021] 2) Weigh 75.5g of basic nickel carbonate, 45g of molybdenum trioxide, 45g of scallop powder, and 240g of silica sol into the product in step 1), stir and mix evenly;
[0022] 3) Kneading and molding the mixture in step 2) to obtain a molding;
[0023] 4) Put the molding obtained in step 3) into an oven, dry at 125°C for 2 hours, and then bake at 500°C for 3 hours to obtain the hydrodesulfurization catalyst 3#, the active group of the hydrodesulfurization catalyst 3# Min content is 20%.
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Abstract
The invention relates to a hydrogen desulfurization catalyst and a preparation method of the hydrogen desulfurization catalyst. The hydrogen desulfurization catalyst comprises alumina, an additive and an active ingredient, wherein the alumina is a product formed by roasting the alumina waste at the temperature of 450-550 DEG C; and the content of the active ingredient is 20-30 weight percent. According to the method for preparing the hydrogen desulfurization catalyst, the temperature of roasting the oxidant waste is defined at the temperature of 450-550 DEG C, filling of adhesives, pore-forming substances and the like on the original pore volume can be reduced under the roasting temperature and roasting time, the porosity and pore diameter on the alumina waste are increased, the raw material requirements in the kneading method for preparing the hydrogen desulfurization catalyst are met, and the catalyst has high catalytic activity.
Description
technical field [0001] The invention relates to a hydrodesulfurization catalyst and a preparation method thereof, belonging to the technical field of desulfurization. Background technique [0002] In recent years, with the deterioration of petroleum raw materials, the content of sulfur impurities in raw materials has been increasing. Therefore, in the process of petroleum refining, the flue gas discharged into the atmosphere contains more and more SO X Harmful gas, seriously pollute the environment. With the enhancement of residents' awareness of environmental protection and the increasingly stringent emission standards of harmful gases, the requirements for clean fuel production are getting higher and higher, and the restrictions on sulfur content are becoming stricter. Therefore, various desulfurization methods have emerged as the times require. [0003] At present, the more commonly used desulfurization methods in the petroleum refining process include hydrodesulfurizati...
Claims
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Application Information
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