Hydrogenation catalyst and preparation method and application thereof in heavy oil suspended bed hydrotreatment

A hydrogenation catalyst and hydrotreating technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problems of metal aggregation, low utilization rate of active metals, boron There is little room for improvement in content and active component content, so as to achieve the effect of good hydrodesulfurization, wide adjustment range and easy adjustment of surface acidity

Active Publication Date: 2020-07-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has a good hydrodesulfurization effect, but because the catalyst uses a conventional impregnation method, limited by the maximum concentration of the impregnation solution, there is not much room for improvement in the content of boron and active components, and it is easy to cause metal aggregation when the metal loading is high , the utilization rate of active metal is low, which limits the reactivity of the catalyst

Method used

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  • Hydrogenation catalyst and preparation method and application thereof in heavy oil suspended bed hydrotreatment
  • Hydrogenation catalyst and preparation method and application thereof in heavy oil suspended bed hydrotreatment
  • Hydrogenation catalyst and preparation method and application thereof in heavy oil suspended bed hydrotreatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 20.3g of aluminum isopropoxide, uniformly disperse in 130g of deionized water to make a slurry, then add 9.5g of aqueous solution containing 15% boric acid, and react at 85°C for 2 hours to obtain mixture A. Weigh 3.7 g of ammonium molybdate tetrahydrate and 3.0 g of nickel nitrate hexahydrate, and prepare solutions with 10 mL of deionized water respectively, add them to mixture A in turn, and react at 90°C for 6 hours to obtain the catalyst precursor.

[0022] The catalyst precursor was aged at 25°C for 8 days, then dispersed in liquid paraffin, and heat-treated at 320°C for 5 hours to obtain catalyst C-1.

[0023] The XRD characterization results of catalyst C-1 are as follows figure 1 As shown, the characteristic diffraction peaks of incomplete crystal AlOOH are presented, which proves that the catalyst support is pseudo-boehmite. at 2θ=26 o MoO does not appear when 3 The characteristic peaks indicate that the supported active metals are well dispersed on th...

Embodiment 2

[0025] Weigh 18.8g of aluminum isopropoxide, uniformly disperse in 160g of aqueous solution containing 40% isopropanol to make a slurry, then add 10.0g of aqueous solution containing 40% boric acid, and react at 85°C for 2 hours to obtain mixture A. Weigh 3.7 g of ammonium molybdate tetrahydrate and 3.0 g of nickel nitrate hexahydrate, and prepare solutions with 10 mL of deionized water respectively, add them to mixture A in turn, and react at 90°C for 6 hours to obtain the catalyst precursor.

[0026] The catalyst precursor was aged at 40°C for 5 days, then dispersed in liquid paraffin, and heat-treated at 280°C for 8 hours to obtain catalyst C-2.

Embodiment 3

[0028] Weigh 21.1g of aluminum sulfate, uniformly disperse in 160g of aqueous solution containing 40% isopropanol to make a slurry, then add 1.4g of aqueous solution containing 40% boric acid, and react at 85°C for 2 hours to obtain mixture A. Weigh 2.5 g of ammonium molybdate tetrahydrate and 2.0 g of nickel nitrate hexahydrate, and prepare solutions with 10 mL of deionized water respectively, add them to mixture A in turn, and react at 90°C for 6 hours to obtain the catalyst precursor.

[0029] The catalyst precursor was aged at 40°C for 5 days, then dispersed in liquid paraffin, and heat-treated at 280°C for 8 hours to obtain catalyst C-3.

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Abstract

The invention discloses a hydrogenation catalyst and a preparation method and an application of the hydrogenation catalyst in heavy oil suspended bed hydrotreatment. The hydrogenation catalyst comprises a carrier, a metal component molybdenum, at least one non-noble metal component selected from group VIII, and an auxiliary agent component; the auxiliary agent component comprises boron or a composition of boron and phosphorus, the carrier is pseudo-boehmite, and the infrared total acid content of the catalyst at a temperature of 350 DEG C or more is 40-350 [mu]mol/g; when the catalyst is characterized by XRD, no MoO3 characteristic peak appears when 2[theta] is equal to 26 degrees. Compared with the prior art, the catalyst provided by the invention is used for carrying out suspended bed hydrotreatment on heavy oil, and has better hydrodesulfurization and denitrification effects.

Description

technical field [0001] The invention relates to a hydrogenation catalyst, a preparation method thereof and an application in heavy oil suspension bed hydrogenation treatment, belonging to the technical field of catalyst preparation and application. Background technique [0002] With the development of the world economy and the enhancement of environmental protection awareness, the demand for clean fuels in various countries continues to increase, and the efficient processing and utilization of heavy oil has become a challenge for the oil refining industry. Heavy oil is rich in impurities such as sulfur, nitrogen, and metals in crude oil. These impurities have an important impact on subsequent processing and product properties, so they must be removed. Catalytic hydroprocessing is one of the most widely used means. The fixed-bed hydrogenation process is prone to local overheating and deactivation of the catalyst. Although the suspension bed hydrogenation reactor is not as e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J27/19B01J35/00B01J37/03C10G45/08
CPCB01J23/883B01J27/19B01J37/033B01J35/0066B01J35/0073C10G45/08C10G2300/202Y02P20/52
Inventor 涂椿滟毋肖卓刘昌伟陈奇黄伟
Owner TAIYUAN UNIV OF TECH
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