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Heavy oil hydrogenation catalyst with high desulfurization activity and preparation method thereof

A heavy oil hydrogenation and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, hydrocarbon oil treatment, etc. Advanced problems, to achieve the effect of improving dispersion, avoiding strong interactions, and being easy to vulcanize

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current technology for producing low-sulfur marine fuel oil is mainly to produce low-sulfur marine fuel oil by hydrogenation of fixed-bed residual oil. Higher requirements and higher processing costs
The fluidized bed hydrogenation technology has achieved rapid development in recent years. It can use inferior and cheap heavy oil as raw material, and the hydrogenated heavy oil produced can be used as low-sulfur marine fuel oil or blending components, with lower production costs and significant economic benefits. But the problem is that the sulfur content of hydrogenated heavy oil needs to be further reduced to increase the blending ratio
[0006] Although the catalyst preparation methods disclosed in the above patents have improved the carrier, the active metal is still supported by the conventional impregnation method, so that the active metal has a strong interaction with the alumina carrier, and the utilization rate of the active metal is not high, which limits the Further increase in catalyst activity

Method used

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  • Heavy oil hydrogenation catalyst with high desulfurization activity and preparation method thereof
  • Heavy oil hydrogenation catalyst with high desulfurization activity and preparation method thereof
  • Heavy oil hydrogenation catalyst with high desulfurization activity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Carrier preparation

[0042] First, n-valeric acid was added to deionized water, and it was completely dissolved by stirring at 50 °C to prepare an aqueous solution of n-valeric acid with a concentration of 0.05 g / mL. Then 100g alumina carrier (made from commercially available pseudo-boehmite powder, obtained by kneading, molding and roasting, spherical carrier, particle size 0.3~0.8mm, specific surface area is 285m 2 / g, the pore volume is 0.772 mL / g) into the prepared 800mL n-valeric acid aqueous solution, soak for 15min, then take out the alumina carrier and put it in a fat extractor for extraction. The aqueous solution of valeric acid, the temperature is 90 ℃, and the extraction time is 8h. The carrier after extraction was subjected to low temperature heat treatment at 110 °C for 8 h to obtain the treated alumina carrier.

[0043] (2) Catalyst preparation

[0044] 14.36g of molybdenum oxide, 4.73g of basic nickel carbonate, 0.52g of basic cobalt carbonate and...

Embodiment 2

[0049] (1) Carrier preparation

[0050] First, n-decanoic acid was dissolved in petroleum ether, and it was completely dissolved by stirring at 40 °C to prepare a n-valeric acid solution with a concentration of 0.06 g / mL. Then 100g alumina carrier (made from commercially available pseudo-boehmite powder, obtained by kneading, molding and roasting, spherical carrier, particle size 0.3~0.8mm, specific surface area is 285 m 2 / g, the pore volume is 0.772 mL / g) into the prepared 700mL n-decanoic acid solution, soak for 15min, then take out the alumina carrier and put it into a fat extractor for extraction treatment. Decanoic acid petroleum ether solution, the temperature is 90 ℃, the extraction time is 8h. The carrier after extraction was subjected to low temperature heat treatment at 110 °C for 8 h to obtain the treated alumina carrier.

[0051] (2) Catalyst preparation

[0052] 18.82g of molybdenum oxide, 4.83g of basic nickel carbonate, 2.04g of basic cobalt carbonate and 6....

Embodiment 3

[0057] (1) Carrier preparation

[0058] First, citric acid was dissolved in deionized water, and it was completely dissolved by stirring at 50 °C to prepare an aqueous citric acid solution with a concentration of 0.07 g / mL. Then 100g alumina carrier (made from commercially available pseudo-boehmite powder, obtained by kneading, molding and roasting, spherical carrier, particle size 0.3~0.8mm, specific surface area is 285 m 2 / g, the pore volume is 0.772 mL / g) into the prepared 600mL citric acid aqueous solution, soak for 15min, then take out the alumina carrier and put it into a fat extractor for extraction, the solvent is citric acid soaked in the carrier Aqueous solution, the temperature is 90 ℃, the extraction time is 8h. The carrier after extraction was subjected to low temperature heat treatment at 110 °C for 8 h to obtain the treated alumina carrier.

[0059] (2) Catalyst preparation

[0060] 23.70g of molybdenum oxide, 4.35g of basic nickel carbonate, 4.27g of basic ...

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Abstract

The invention discloses a heavy oil hydrogenation catalyst with high desulfurization activity and a preparation method thereof, and the preparation method comprises the following steps: adding an alumina carrier into an organic acid solution for soaking treatment, further performing extraction treatment, then performing low-temperature heat treatment to obtain a carrier, then loading active metal, and finally drying and roasting to obtain the catalyst. The preparation method of the catalyst provided by the invention can effectively weaken the interaction between the active metal and the alumina carrier, improves the uniform dispersion of the active metal on the carrier to a certain extent, and the obtained catalyst is easier to sulfurize, thereby greatly improving the hydrodesulfurization activity of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of oil refining and chemical industry, and relates to a catalyst and a preparation method thereof, in particular to a heavy oil hydrogenation catalyst with high desulfurization activity and a preparation method thereof. Background technique [0002] According to the International Maritime Organization's global marine fuel oil sulfur limit regulations, it is required that from January 1, 2020, the sulfur content of fuel oil used by ships worldwide cannot be higher than 0.5%. Recently, China has also released the implementation plan for the 2020 global marine fuel sulfur limit order. From January 1, 2020, international ships entering the waters under the jurisdiction of the People's Republic of China should use marine fuel with a sulfur content of no more than 0.5%. As a result, there is a large gap in low-sulfur marine fuel oil. Sinopec proposes that the production capacity of low-sulfur heavy clean marine fu...

Claims

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Application Information

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IPC IPC(8): B01J27/19C10G45/08
CPCB01J27/19C10G45/08C10G2300/202B01J35/394Y02P20/52
Inventor 金浩朱慧红杨光吕振辉刘璐杨涛
Owner CHINA PETROLEUM & CHEM CORP
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