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Preparation method of 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 pore size, reasonable pore distribution, and large pore volume

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Examples

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Embodiment 1

[0033] Add 1000mL of water into the reaction tank, add 65g of nickel chloride and 46g of ammonium metatungstate to dissolve respectively, prepare acidic working solution A, and pass CO with a concentration of 85v% into solution A 2 , so that the CO in the gas in the tank 2 The concentration is 80v%, sealed tank. Add 500mL of water into the dissolution tank, then add 30g of sodium metaaluminate to dissolve, and prepare alkaline working solution B. Add solution B into a sealed reaction tank to react with working solution A to form a gel. The gelation temperature is 45°C, the gelation time is 1 hour, and the pH of the gelled slurry is 8.5 at the end. 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 3.2. Aged for 2 hours after gelling. 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 at 80°C f...

Embodiment 2

[0035] Compared with Example 1, the difference is that according to the catalyst B component content ratio in Table 1, the dissolved CO 2 The gas solution A and solution B flow together into the reaction tank to form a gel. Adjust the pH value of the slurry in the reaction tank to 8.5, the gelation temperature is 45°C, and the gelation time is 1 hour. Finally, catalyst B is obtained. The composition and main properties are shown in the table. 1.

Embodiment 3

[0037] According to the method of Example 1, according to the component content ratio of catalyst C in Table 1, after adding 1200ml of clean water in the reaction tank, add nickel chloride, ammonium metatungstate and zirconium oxychloride to prepare acidic working solution A , and then add sodium metaaluminate alkaline working solution B to the dissolution tank. Feed CO with a concentration of 90v% into the reaction tank solution A 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. The solution B was added dropwise into the sealed reaction tank to form a gel, the gel forming temperature was 55°C, the gel forming time was 1.5 hours, and the pH value of the gel forming slurry was 7.5 at the end. 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...

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Abstract

The invention discloses a preparation method of a hydrotreating catalyst composition. The method comprises the steps of subjecting a salt mixed solution A in which CO2 is dissolved to react with an alkaline solution B containing aluminium to prepare gel, when reaction is completed, controlling the pH value of pulp in a reaction tank to be 7.0-9.0, preparing a mixture of an NixWyOz composite oxide precursor and an Al2O3 precursor, pulping the mixture and MoO3 to prepare a dry body, and then forming, drying and roasting the dry body to obtain a final catalyst, wherein the salt mixed solution A contains components Ni and W. 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 preparation method of a hydrogenation treatment catalyst composition, in particular to a catalyst cleaning preparation method for hydrocarbon ultra-deep hydrogenation desulfurization, denitrogenation and other impurity removal processes. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G45/08
Inventor 王海涛徐学军马涛王继锋刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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