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Light cycle oil hydrodesulfurization catalyst and preparation method thereof

A light cycle oil, hydrodesulfurization technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of large environmental pollution, removal of light cycle oil sulfides, high operating costs, etc. , to achieve high desulfurization rate, cost saving, simple activation operation

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

[0008] One of the technical problems to be solved by the present invention is to provide a kind of New Deep Desulfurization Catalyst

Method used

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  • Light cycle oil hydrodesulfurization catalyst and preparation method thereof
  • Light cycle oil hydrodesulfurization catalyst and preparation method thereof
  • Light cycle oil hydrodesulfurization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 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.

[0036] 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 17% of the dry weight of the carrier. After aging for 8 hours and drying, impregnate the carrier particles with nickel hypophosphite solution at 40°C. The converted nickel phosphide content in the impregnating soluti...

Embodiment 2

[0039] 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 3aqueous 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.

[0040] 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 17% 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

[0043] 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.

[0044] 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 7% and 14% of the dry weight of the carrier. After aging for 8 hours and drying, impregnate the carrier particles with nickel hypophosphite solution at 40°C. The converted nickel phosphide content in the impregnation solutio...

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Abstract

The invention relates to a light cycle oil hydrodesulfurization catalyst and a preparation method thereof, and mainly solves the problems of no capability for deep removal of sulfides in light cycle oil, need of prevulcanization treatment before operation start, high operation cost, severe environmental pollution and the like in traditional hydrodesulfurization catalysts. According to the invention, the adopted catalyst takes at least one of alumina, silicon oxide, titanium oxide or amorphous silicon-aluminum as the carrier, and adopts molybdenum sulfide, tungsten sulfide, and at least one of nickel phosphide or cobalt phosphide as the active component. The technical scheme well solves the technical problems, has the characteristics of no need of prevulcanization, simple operation, small pollution, and a deep desulfurization rate higher than that of similar catalysts, and can be used for the hydrogenation refining field.

Description

technical field [0001] The invention relates to a light cycle oil hydrogenation desulfurization 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 technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/14C10G45/08
Inventor 孔德金李旭光郑均林侯敏
Owner CHINA PETROLEUM & CHEM CORP
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