A kind of preparation method of sulfur-loaded hydrogenation catalyst

A hydrogenation catalyst and sulfur-carrying technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem that the degree of sulfidation of the catalyst does not increase significantly, and achieve the reduction of preparation costs and the degree of sulfidation. High and simple production process

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The catalyst active metal prepared by this method is an oxygen-sulfur compound, and the degree of sulfidation of the catalyst does not increase significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 100g of 200-mesh WHA-412 powder (product of Wenzhou Jingjing Alumina Factory) into 1500mL of 50°C deionized water and stir for 1 hour, then add 100mL of 0.7M nickel nitrate solution and stir for 0.5 hours, then add 0.7M carbonic acid dropwise Sodium solution, the pH value of the control system is 4 ) 6 Mo 7 o 24 4H 2 O solution 200mL, add 0.4M ammonium sulfide solution 200mL after 0.5 hours, add dropwise 4.0M nitric acid solution 100mL after 2 hours, generate brown molybdenum trisulfide MoS 3 Precipitation, aging for 1 hour and filtering, the filter cake was dried at 110°C for 24 hours and crushed into a 300-mesh material, which was mixed with water and peptizer containing nitric acid and extruded The strips were dried at 130°C for 5 hours to obtain the finished catalyst, coded as HDS-1.

Embodiment 2

[0036] The preparation method is the same as that in Example 1, except that cobalt nitrate replaces nickel nitrate to prepare catalyst HDS-2.

Embodiment 3

[0038] Preparation method is with embodiment 1, just ammonium molybdate (NH 4 )6 Mo 7 o 24 4H 2 O solution is 240mL, ammonium sulfide solution is 240mL, nitric acid solution is 120mL, and catalyst HDS-3 is obtained.

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Abstract

The invention discloses a preparation method of a sulfur-loaded hydrogenation catalyst. The method comprises the following steps: firstly pulping a hydrated alumina precursor, adding a nickel nitrate or cobalt nitrate solution, then slowly adding a carbonate precipitating agent solution drop by drop to form composite nickel carbonate or composite cobalt carbonate precipitates, aging, filtering, washing to obtain a wet filter cake, pulping in a closed container, orderly adding an ammonium heptamolybdate aqueous solution and an ammonium sulphide aqueous solution, slowly adding dilute nitric acid drop by drop into the solution to generate a molybdenum sulfide MoS3 paste precipitate, filtering the precipitate, drying, molding, and drying to obtain the sulfur-loaded catalyst. The sulfur-loaded catalyst prepared by the method of the invention is high in sulfidity, and the production process is simple, and easy to carry out technically; the catalyst has high hydrorefining performance. The method of the invention simplifies the preparation process of the catalyst, saves resources, and increases benefits.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a preparation method of a sulfur-loaded hydrogenation catalyst. Background technique [0002] The challenges of environmental protection and sustainable development, the specifications of petroleum products are becoming more and more stringent, and the production of clean fuels is getting more and more attention. Reducing sulfur and benzene content and moderately controlling olefin content are the main trends in the development of gasoline quality. Reducing sulfur content and improving stability Properly increasing the cetane number of vehicle diesel and controlling the content of polycyclic aromatic hydrocarbons are the main trends in the development of diesel oil. The hydrofinishing process is essential, and catalysts are the subject. A typical hydrorefining catalyst uses activated alumina as a carrier, molybdenum, tungsten, nickel, and cobalt as active metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051C10G45/08
Inventor 姚运海段为宇丁莉郭蓉杨成敏孙进
Owner CHINA PETROLEUM & CHEM CORP
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