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Hydrodenitrogenation catalyst for LCO (light cycle oil) and preparation method of hydrodenitrogenation catalyst

A light cycle oil, hydrodenitrogenation technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of high operating costs, large environmental pollution, removal of light cycle oil nitrogen and other problems, to achieve the effect of simple activation operation, reducing pollution and high denitrification rate

Inactive Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is to overcome the problems that traditional hydrofining catalysts cannot deeply remove nitrogen compounds in light cycle oil, and require pre-sulfurization treatment before starting work, high operating costs, and large environmental pollution. New Deep Denitrification Catalyst

Method used

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  • Hydrodenitrogenation catalyst for LCO (light cycle oil) and preparation method of hydrodenitrogenation catalyst
  • Hydrodenitrogenation catalyst for LCO (light cycle oil) and preparation method of hydrodenitrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 2.4g of scallop powder to 80g of gamma-alumina (Shandong Zibo Qilin Chemical Co., Ltd.) on a dry basis and mix well, then add 4g of HNO at a volume ratio of 1:1 3 aqueous solution and 40g deionized water, and knead evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (cross-sectional diameter 1.5mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.5×4.0mm) of uniform size for use.

[0035] The ammonium tetrathiomolybdate and ammonium tetrathiotungstate solutions are used to impregnate the carrier particles at 40°C, and the contents of molybdenum sulfide and tungsten sulfide contained in the impregnation solution are respectively 10% and 18% of the dry weight of the carrier. After aging for 8 hours and drying, the nickel hypophosphite solution is used to impregnate the carrier particles at 40°C. The converted nickel phosphide content in the impregnat...

Embodiment 2

[0038] Add 2.4g of scallop powder to 80g of gamma-alumina (Shandong Zibo Qilin Chemical Co., Ltd.) on a dry basis and mix well, then add 4g of HNO at a volume ratio of 1:1 3 aqueous solution and 40g deionized water, and knead evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (cross-sectional diameter 1.5mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.5×4.0mm) of uniform size for use.

[0039]The ammonium tetrathiomolybdate and ammonium tetrathiotungstate solutions are used to impregnate the carrier particles at 40°C, and the contents of molybdenum sulfide and tungsten sulfide contained in the impregnation solution are respectively 10% and 18% of the dry weight of the carrier. After aging for 8 hours and drying, impregnate the carrier particles with cobalt hypophosphite solution at 40°C. The converted cobalt phosphide content in the impregnating solutio...

Embodiment 3

[0042] Add 2.4g of scallop powder to 80g of gamma-alumina (Shandong Zibo Qilin Chemical Co., Ltd.) on a dry basis and mix well, then add 4g of HNO at a volume ratio of 1:1 3 aqueous solution and 40g deionized water, and knead evenly to make a dough suitable for extrusion. It is extruded through a die and is in the shape of a slender cylinder (cross-sectional diameter 1.5mm). After drying at 120°C, it is baked at 550°C for 4 hours, and then it is cut into carrier particles (1.5×4.0mm) of uniform size for use.

[0043] The ammonium tetrathiomolybdate and ammonium tetrathiotungstate solutions are used to impregnate the carrier particles at 40°C, and the contents of molybdenum sulfide and tungsten sulfide contained in the impregnation solution are respectively 10% and 18% of the dry weight of the carrier. After aging for 8 hours and drying, impregnate the carrier particles with nickel hypophosphite and cobalt hypophosphite solutions at 40°C. The converted contents of nickel phosph...

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Abstract

The invention relates to a hydrodenitrogenation catalyst for LCO (light cycle oil) and a preparation method of the hydrodenitrogenation catalyst and mainly solves the problems that traditional hydrodenitrogenation catalysts cannot deeply remove nitrides in LCO, presulfurization is required before processing, the operation cost is high, and the environment pollution is severe and the like. With the adoption of a technical scheme that at least one of alumina, silica or amorphous silica-alumina is selected as one carrier, and molybdenum sulfide, tungsten sulfide and at least one of nickel phosphide or cobalt phosphate are taken as active components, the problems are better solved, presulfurization is not needed, the operation is simple and convenient, pollution is low, the deep nitrogen removal rate is higher than that of the catalysts of the same kind, and the hydrodenitrogenation catalyst can be used in the hydrogenation refining field.

Description

technical field [0001] The invention relates to a light cycle oil hydrodenitrogenation catalyst and a preparation method thereof. Background technique [0002] Light cycle oil (LCO), usually used as a lower quality diesel oil component blended with straight-run diesel oil, or used directly as fuel oil. From the composition of LCO, the content of aromatics is 75-85wt%, the content of sulfur is 0.2-1.5wt%, the content of nitrogen is 100-750ppm, the cetane number is only 15-25, and the ignition performance is poor. With the increasing demand for gasoline and diesel in transportation fuels and the environmental pollution caused by engine exhaust, countries all over the world have begun to strictly limit the quality of fuel products, especially the sulfur content. In order to meet the needs of my country's oil refining industry to produce clean fuels and process sulfur-containing crude oil, oil refineries will pay more attention to and apply more hydrorefining technology. The l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C10G45/08
Inventor 李旭光孔德金郑均林陈燕
Owner CHINA PETROLEUM & CHEM CORP
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