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Method for preparing hydrotreating catalyst composition

A hydrotreating 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 The effect of enhanced property, good dispersion and reasonable pore distribution

Active Publication Date: 2015-07-22
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 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, large pore volume is conducive to the entry and exit of large hydrocarbon molecules, can process heavier raw materials, can be used in hydrodesulfurization, hydrodenitrogenation reactions, especially suitable for ultra-deep ultra-clean diesel production In desulfurization reaction

Method used

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  • Method for preparing hydrotreating catalyst composition
  • Method for preparing hydrotreating catalyst composition
  • Method for preparing hydrotreating catalyst composition

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 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 Gas, the concentration is 40v%, the gelling temperature is 45°C, the pH value of the slurry in the reaction tank is 7.5, repeat the above operation process twice, control the pH value of the reaction slurry to 7.5 at the end of gelling, and age for 2 hours. Then filter, add 600ml of clean water and 12.4g of molybdenum trioxide to the filter cake, beat and stir evenly, filter, dry the filter cake a...

Embodiment 2

[0039] 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 Gas, the concentration is 30v%, the gelling temperature is 50°C, the pH value of the slurry in the reaction tank is 8.0, repeat the above operation process 4 times, control the pH value of the reaction slurry to 7.5 at the end of gelling, and age for 2 hours. Then filter, add 500ml of clean water and 10.3g of molybdenum trioxide to the filter cake, beat and stir evenly, filter, dry the filter cak...

Embodiment 3

[0041] 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 2 The concentration is 50v%, the gelling temperature is 55°C, the pH value of the slurry in the reaction tank is 7.8, the above operation process is repeated 5 times, the pH value of the reaction slurry is controlled to be 7.8 at the end of the gelling, and the aging time is 2.5 hours. Then filter, add 500ml clean water and 11.2g molybdenum trioxide to the filter cake, b...

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Abstract

The invention discloses a method for preparing a hydrotreating catalyst composition. When a mixture of an NixWyOz composite oxide precursor and an Al2O3 precursor is prepared by a precipitation method, sodium metaaluminate is used as an aluminum source, and the sodium metaaluminate and CO2 gas are added in a swinging way in a gelling process, so that the resultant precipitate particles are large and uniform, and thereby the physical and chemical properties of the catalyst are improved, the catalyst has the characteristics of large pore volume, large specific surface area, reasonable pore size distribution, good dispersion of active metal and the like, and the problems that a bulk phase catalyst is difficult to mold is also solved. The catalyst prepared by the method provided by the invention is especially suitable for an ultra deep desulfurization reaction for producing ultra-clean diesel.

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): B01J23/888C10G45/08
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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