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Preparation method of hydrogenation catalyst composition

A hydrogenation catalyst and composition technology, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. The effect of enhanced junction, improved physicochemical properties, and reasonable pore structure

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a hydrogenation catalyst composition, especially a clean preparation method, while solving the problem of difficulty in forming a bulk catalyst, and the catalyst has a large specific surface area and uniform pore distribution, etc. Good physical and chemical properties, large pore volume is conducive to the entry and exit of large hydrocarbon molecules, can process heavier raw materials, and can be used in hydrodesulfurization and hydrodenitrogenation reactions, especially for ultra-deep desulfurization in the production of ultra-clean diesel reacting

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Examples

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Embodiment 1

[0032] Add 500mL of clean water into the dissolution tank 1, add 60g of nickel chloride and 49g of ammonium metatungstate respectively to dissolve, prepare acidic working solution A, add 500mL of water into the dissolution tank 2, then add 30 grams of sodium metaaluminate to dissolve, and prepare Alkaline working solution B. Add 1000mL water into the reaction tank, and pass CO2 with a volume concentration of 85v% into the clean water 2 , so that the CO in the gas in the tank 2 The concentration is 80v%, the tank is sealed, the temperature rises to 45°C, and solution A and solution B are poured into the sealed reaction tank in parallel to form a gel. The gelation temperature is 45°C, the gelation time is 1 hour, and the pH of the gelatinized slurry at the end The value is 8.5. Clean water neutralizes CO in the reaction tank 2 The total amount of gas and the Al in alkaline working solution B 2 o 3 The molar ratio was 3.5. Aged for 2 hours after gelling. Then filter, add 6...

Embodiment 2

[0034] According to the method for embodiment 1, press the component content ratio of catalyst B in table 1, add nickel chloride, ammonium metatungstate and zirconium oxychloride to prepare acidic working solution A in dissolving tank 1, then add to dissolving tank 2, add sodium metaaluminate alkaline working solution B. Add 800mL water into the reaction tank, and pass CO2 with a concentration of 90v% into the clean water 2 , so that the CO in the gas in the tank 2 The concentration is 85v%, the tank is sealed, and the temperature rises to 55°C. Add solution A and solution B concurrently into a sealed reaction tank to form a gel. The gelation temperature is 55° C., the gelation time is 1.5 hours, and the pH value of the gelation slurry is 7.5. CO was added during gelation 2 The total amount of gas and the Al in alkaline working solution B 2 o 3 The molar ratio was 4.0. Aged for 1.5 hours after gelling. Then filter, add 500ml of clean water and 10.3g of molybdenum trioxi...

Embodiment 3

[0036] According to the method of Example 1, according to the component content ratio of catalyst C in Table 1, nickel chloride, ammonium metatungstate and phosphoric acid are added to the dissolution tank 1 to prepare acidic working solution A, and then added to the dissolution tank 2 Sodium metaaluminate alkaline working solution B. Add 800mL water into the reaction tank, and pass CO2 with a concentration of 95v% into the clean water 2 , so that the CO in the gas in the tank 2 The concentration is 88 v%, the tank is sealed, and the temperature is raised to 50°C. Add solution A and solution B concurrently into a sealed reaction tank to form a gel. The gelation temperature is 50° C., the gelation time is 1.5 hours, and the pH value of the gelation slurry is 8.0. CO was added during gelation 2 The total amount of gas and the Al in alkaline working solution B 2 o 3 The molar ratio was 3.0. Aged for 2.0 hours after gelling. Then filter, add 500ml clean water and 11.2g moly...

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Abstract

The invention discloses a preparation method of a hydrogenation catalyst composition. The method comprises the steps of filling clear water into a reaction tank and filling CO2 into the clear water; and adding a salt mixed solution A containing components Ni and W and an alkaline solution B containing aluminium to the reaction tank in parallel to prepare gel, controlling the pH value of pulp in the reaction tank to be 7.0-9.0, preparing a mixture of an NixWyOz composite oxide precursor and an Al2O3 precursor, then beating the mixture and MoO3 to prepare a dry body, and then forming, drying and roasting the dry body to obtain a final catalyst. The method has the beneficial effects that the problem that bulk phase catalysts are difficult to form is solved; the physical and chemical properties of the catalyst are adjusted, and the catalyst has the advantages of larger specific surface area, uniform pore distribution and high effective utilization rate of reactive metals; and the catalyst is especially suitable for the ultra-deep desulfurization reaction for producing ultra-clean diesel.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst composition, in particular to a method for cleaning and preparing catalysts for impurity removal processes such as hydrocarbon ultra-deep hydrodesulfurization and denitrogenation. Background technique [0002] While the quality of feedstock oil is further deteriorating worldwide, fuel oil regulations have become more stringent on transportation fuel indicators. In the past decade, many countries, including North America, Europe, and Japan, have proposed the concept of ultra-low sulfur diesel (ULSD) and continuously New fuel regulations are formulated to limit the content of sulfur and aromatics in gasoline and diesel for vehicles. Therefore, it is urgent to develop catalysts with high hydrodesulfurization activity to meet the needs of ultra-deep hydrodesulfurization of diesel. [0003] Petroleum fractions contain a variety of sulfur-containing compounds with different structures a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/888B01J27/19C10G45/08
Inventor 王海涛徐学军马涛冯小萍刘东香王继锋
Owner CHINA PETROLEUM & CHEM CORP
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