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Preparation method of hydrotreatment catalyst composition

A hydrogenation treatment and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as difficulty in forming bulk catalysts, and achieve bonding Enhanced performance, improved physical and chemical properties, and reasonable pore structure

Active Publication Date: 2013-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a hydrotreating 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 Good physical and chemical properties such as high effective utilization rate of active metal components, 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 suitable for In the ultra-deep desulfurization reaction to produce ultra-clean diesel

Method used

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Embodiment 1

[0038] Add 500mL of water to the dissolution tank 1, add 40g of nickel chloride and 46g of ammonium metatungstate respectively to dissolve, prepare acidic working solution A, add 500mL of water to the dissolution tank 2, then add 30g of sodium metaaluminate to dissolve, and prepare alkali Sex Work Solution B. Add solution A into the reaction tank, and the temperature rises to 45°C. Under the condition of stirring, add 150ml solution B into the reaction tank containing solution A to form a gel, control the pH value of the slurry in the reaction tank to be 9.5, and then introduce CO 2 The concentration of gas is 40v%, the gelling temperature is 45°C, the pH value of the slurry in the reaction tank is 7.5, and the above operation process is repeated twice. At the end of gelation, the pH of the reaction slurry was controlled to be 7.5, and aged for 2 hours. Then filter, add 600ml of clean water, 12.4g of molybdenum trioxide and 150 grams of butanediol to the filter cake, beat an...

Embodiment 2

[0040] 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 solution A into the reaction tank, and the temperature rises to 50°C. In the case of stirring, add 100ml solution B into the reaction tank containing solution A to form a gel, control the pH value of the slurry in the reaction tank to 9.8, and then introduce CO 2 The gas concentration is 30v%, the gelling temperature is 50°C, the pH value of the slurry in the reaction tank is 8.0, and the above operation process is repeated 4 times. At the end of gelation, the pH of the reaction slurry was controlled to be 7.5, and aged for 2 hours. Then filter, add 500ml of clean water, 10.3g of molybdenum trioxide and 200 grams of tetraethylammonium bromide to the filt...

Embodiment 3

[0042] 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 solution A into the reaction tank, and the temperature rises to 55°C. In the case of stirring, add 80ml of solution B into the reaction tank containing solution A to form a gel, control the pH value of the slurry in the reaction tank to 10.5, and then introduce CO 2 gas, CO 2The concentration is 50v%, the gelling temperature is 55°C, the pH value of the slurry in the reaction tank is 7.8, and the above operation process is repeated 5 times. At the end of gelation, the pH of the reaction slurry was controlled to be 7.8, and aged for 2.5 hours. Then filter, add 500ml of clean water, 11.2g of molybdenum trioxide and 320g of EDTA to the filter...

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Abstract

The invention discloses a preparation method of a hydrotreatment catalyst composition. According to the method, during preparation of a mixture of NixWyOz composite oxide precursor and Al2O3 precursor, sodium meta aluminate is employed as an aluminium source, and sodium meta aluminate and CO2 gas are added with swing addition during a gelatinizing process; after gelatinization, the mixture, molybdena and organic solvent are beaten, mixed, moulded and dried to obtain the catalyst. Particles prepared by the method are large and uniform to improve physical and chemical properties of the catalyst; the catalyst has characteristics of large pore volume, large specific surface area, reasonable aperture distribution and high effective utilization rate of active metal, etc.; and the method solves a problem of difficulty in forming of bulk phase catalyst. The catalyst prepared by the method of the invention is especially suitable for super-deep desulphurization reaction in production of super-cleaning diesel oil.

Description

technical field [0001] The invention relates to a method for preparing a hydrotreating catalyst composition, in particular to a method for preparing a catalyst used in 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 ten years, many countries including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel oil (ULSD) and continuously The formulation of new fuel regulations to limit the content of sulfur and aromatics in motor gasoline and diesel makes it necessary for refineries to find new catalysts to meet product needs while ensuring profitability. [0003] Petroleum fractions contain a variety of sulfur-containing compounds with different structures and molecular weights, including mercaptans, thio...

Claims

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Application Information

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