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Hydrotreating catalyst and application thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, organic compound/hydride/coordination complex catalysts, etc., which can solve the problems of reduced reaction rate and other issues

Active Publication Date: 2017-09-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4,6-Dimethyldibenzothiophene is a typical representative of this type of compound. Because the methyl group adjacent to the sulfur atom in the molecule makes it difficult for the sulfur atom to approach the active center of the catalyst, the reaction rate is greatly reduced, and its desulfurization reaction rate is about one-tenth of dibenzothiophene

Method used

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  • Hydrotreating catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Weigh 493.0 grams of Changling dry rubber powder, 26.1 grams of HY molecular sieves, 30.8 grams of methylcellulose and 525 milliliters of aqueous solution containing 1.0% by weight of nitric acid and mix evenly, extrude into a clover-shaped bar with a circumscribed circle diameter of 1.6 mm, and heat at 120 ° C Let dry for 4 hours. Weigh 300 grams of dried strips, place them in a tube furnace to isolate the air, raise the temperature to 580° C. at 4° C. / min, and carbonize for 4 hours. Then, feed 150 standard liters / (kg·hour) of water vapor, raise the temperature to 820°C at 6°C / min, and activate for 60 minutes to obtain the carbon-containing alumina carrier S l . Among them, 3.0% by weight of carbon and 5.0% by weight of molecular sieves are contained.

[0070] Weigh the above S l 100.0 grams of the carrier was impregnated with 94 milliliters of an aqueous solution containing 9.7 grams of basic cobalt carbonate, 27.8 grams of molybdenum trioxide, 7.7 grams of phospho...

Embodiment 2

[0072] Take by weighing 493.0 grams of Changling dry rubber powder, 26.1 grams of HY type molecular sieves, 12.3 grams of methylcellulose and 525 milliliters of aqueous solutions containing 26.4 grams of oxalic acid and 1.0% by weight of nitric acid, mix evenly, and extrude into a clover shape with a circumscribed circle diameter of 1.6 mm Strips, dried at 120°C for 4 hours. Wherein, the weight ratio of oxalic acid to methylcellulose is 2.14. Weigh 300 grams of dried strips, place them in a tube furnace to isolate the air, raise the temperature to 580° C. at 4° C. / min, and carbonize for 4 hours. Then, feed 150 standard liters / (kg·hour) of water vapor, raise the temperature to 820°C at 6°C / min, and activate for 60 minutes to obtain the carbon-containing alumina carrier S 2 . Among them, 3.0% by weight of carbon and 5.0% by weight of molecular sieves are contained.

[0073] Weigh the above S 2 100.0 grams of the carrier was impregnated with 94 milliliters of an aqueous solut...

Embodiment 3

[0075] Take by weighing 493.0 grams of Changling dry rubber powder, 23.9 grams of Hβ molecular sieves, 12.3 grams of methylcellulose and 525 milliliters of aqueous solutions containing 26.4 grams of oxalic acid and 1.0% by weight of nitric acid, mix evenly, and extrude into a clover-shaped bar with a circumscribed circle diameter of 1.6 mm , dried at 120°C for 4 hours. Wherein, the weight ratio of oxalic acid to methylcellulose is 2.14. Weigh 300 grams of dried strips, place them in a tube furnace to isolate the air, raise the temperature to 580° C. at 4° C. / min, and carbonize for 4 hours. Then, feed 150 standard liters / (kg·hour) of water vapor, raise the temperature to 820°C at 6°C / min, and activate for 60 minutes to obtain the carbon-containing alumina carrier S 3 . Among them, 3.0% by weight of carbon and 5.0% by weight of molecular sieves are contained.

[0076] Weigh the above S 3 100 grams of carrier was impregnated with 95 milliliters of an aqueous solution containi...

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Abstract

The invention relates to a hydrotreating catalyst and application thereof. The catalyst contains a carrier, and a metal component of family VIII and a metal component of family VIB which are loaded on the carrier. The catalyst is characterized in that the carrier contains heat-proof inorganic oxide, molecular sieves and charcoal, the carrier is prepared by a method in which the heat-proof inorganic oxide and / or the precursors of the heat-proof inorganic oxide, and the molecular sieves, carbon black powder and / or the precursors of charcoal are mixed, molded, dried and activated, wherein activation comprises the following steps: (1) under the existence of isolated air and / or inert gas, carrying out heating treatment to a molded material subjected to drying, keeping the heating treatment temperature at 400-800 DEG C, and maintaining the time for 0.5-8 hours; (2) under the ambience of water vapor and / or carbon dioxide, carrying out heating treatment to a product obtained in step (1), keeping the heating temperature at 600-950 DEG C, maintaining the time for 0.3-4 hours, and enabling the flow rate of the water vapor and / or carbon dioxide to be 50-500 normal liters / kilogram.hour. The catalyst is suitable for hydrotreatment of hydrocarbon oil so as to prepare a clean oil product.

Description

technical field [0001] The invention relates to a hydrotreating catalyst and its application. Background technique [0002] Increasing awareness of environmental protection and stricter environmental regulations force the oil refining industry to pay more attention to the development of clean fuel production technology. How to economically and reasonably produce ultra-low sulfur oil products has become one of the key issues that the oil refining industry needs to solve at present and in a certain period of time in the future. One, and developing new hydroprocessing catalysts with higher activity and selectivity is one of the most economical ways to produce clean oils. [0003] Hydrotreating catalysts are metal sulfides of Group VIB (such as Mo and W) and Group VIII (such as Co and Ni) supported on a carrier, and the carrier is generally γ-Al 2 o 3 . [0004] As one of the important components of the hydrogenation catalyst, the surface properties of the support have an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/16B01J31/34C10G45/08
CPCB01J21/04B01J21/18B01J29/166B01J31/34B01J2229/20C10G45/08
Inventor 王锦业高晓冬李明丰王哲聂红胡志海丁石张乐张锐张润强朱玫
Owner CHINA PETROLEUM & CHEM CORP
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