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Hydrogenation refined catalyst, preparation method and application

A hydrorefining and catalyst technology, applied in refining to remove heteroatoms, etc., can solve the problem of poor hydrogenation saturated monoolefin activity, inability to adapt to heavy hydrogenation raw materials, and variable sulfur content hydrogenation feedstock oil space velocity Increasingly high market requirements, etc.

Active Publication Date: 2007-09-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the "China Applicable Technology Achievement Library", there is an article that introduces "the industrial production and application of the second-stage LY-8602 catalyst for pyrolysis gasoline". The catalyst is an active component Mo 2 o 3 , CoO, carrier γ-Al 2 o 3 Composition, this catalyst has poor activity in hydrogenation of saturated monoolefins, and cannot adapt to the market requirements of heavy hydrogenation feedstock, variable sulfur content, and higher and higher space velocity of hydrogenation feedstock oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 300g of alumina powder prepared by nitric acid method was added with 18ml of silica sol, 4.3ml of phosphoric acid, and 140ml of water, kneaded and extruded, dried at 120°C in the air, and roasted at 620°C for 4 hours to obtain silicon- and phosphorus-containing Elemental γ-Al 2 o 3 carrier. At 55°C, add 4.3g of cobalt acetate to 5ml of water and stir to dissolve, add 15ml of ammonia water containing 30% ammonia during stirring, add 0.5g of potassium hydroxide, 9.6g of ammonium molybdate, and 2.8g of nickel nitrate while stirring, and stir After dissolving, it was impregnated on 30g carrier, aged for 12 hours, dried at 120°C, and calcined at 480°C for 4 hours to obtain catalyst A.

Embodiment 2

[0038] 300g of alumina powder prepared by nitric acid method, add 14ml of additive silica sol, 6.0ml of phosphoric acid, add 140ml of water, knead and extrude, dry in the air at 100-120°C, and roast at 560°C for 6 hours, the obtained silicon-containing , phosphorus element γ-Al 2 o 3 carrier. At 30°C, add 5.4g of cobalt acetate to 5ml of water and stir to dissolve, add 15ml of ammonia water containing 30% ammonia during stirring, add 0.7g of potassium hydroxide, 8.5g of ammonium molybdate, and 4.1g of nickel nitrate while stirring, and stir After dissolving, it was impregnated on 30g carrier, aged for 12 hours, dried at 120°C, and calcined at 500°C for 4 hours to obtain catalyst E.

Embodiment 3

[0042] Add 300g of alumina powder prepared by nitric acid method, add 18ml of auxiliary silica sol, 8.4ml of phosphoric acid, 3.8g of antimony nitrate, 1.8g of tin nitrate, add 140ml of water, knead and extrude, dry in the air at 100-120°C, 560 ℃ roasting for 6 hours, the prepared γ-Al containing silicon and phosphorus elements 2 o 3 carrier. At 50°C, add 6.4g of cobalt acetate to 5ml of water and stir to dissolve, add 15ml of ammonia water containing 30% ammonia while stirring, add 0.7g of potassium hydroxide, 0.4 of cesium hydroxide, 7.4g of ammonium molybdate, nitric acid 5.3 g of nickel was stirred and dissolved, impregnated on a 30 g carrier, aged for 12 hours, dried at 120° C., and calcined at 500° C. for 4 hours to obtain catalyst K.

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Abstract

The invention realtes to a hydrofining hydrotreating catalyst, preparation and application thereof. The catalyst has Mu, Co, Ni as active component, adding adjuvant, and alumina as carrier. Calculated by total weight of the catalyst, including: 14-20% of molybdena, 1-6% of powder blue, 1-4% of nickel oxide, 1-3% of oxide of adjuvant alkaline metal, 1-5% of adjuvant p or / and Sb oxide, 2-6% of Si or / and Sn oxide; pore volume of the catalyst is 0.45-0.65 cm<3> / g, surface area to volume ratio is 150-280 m<2> / g. The catalyst is suit for C5-C8 oil with low distillate, especially for two stage of hydrofining hydrotreating of C6-C8 distillate oil, hydrogenizating saturated mono olefin utmost while hydrodesulfurizating, enables suit for oil with versatile sulfur content and high airspeed.

Description

technical field [0001] The invention relates to a hydrofinishing catalyst and its preparation method and application. The catalyst is suitable for the hydrofinishing of middle and low distillate oils, especially for the two-stage hydrofining process of pyrolysis gasoline. Background technique [0002] In recent years, the rapid expansion of ethylene cracking capacity and the changeable cracking raw materials lead to the changeable composition of ethylene by-product pyrolysis gasoline, heavy quality, variable sulfur content, sometimes the sulfur content is less than 50ppm, and the space velocity of hydrogenated feedstock oil is getting higher and higher. The catalyst for the second-stage hydrogenation of pyrolysis gasoline has poor activity in hydrogenation saturation of monoolefins, and the catalyst is coked and deactivated due to sulfur loss. Therefore, it is necessary to develop a catalyst that can hydrogenate saturated monoolefins to the greatest extent while hydrodesulfu...

Claims

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Application Information

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IPC IPC(8): C10G45/08
Inventor 梁顺琴任建国赵振兴颉伟马红江
Owner PETROCHINA CO LTD
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