Deep denitrification catalyst and preparation method thereof

A deep denitrification and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as high operating costs, inability to deeply remove nitrogen compounds from oil, and large environmental pollution , to achieve the effect of simple activation operation, cost saving and pollution reduction

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 provide a new method to overcome the problems that traditional hydrofining catalysts cannot deeply remove nitrogen compounds in oil products, and require pre-sulfurization treatment before starting work, high operating costs, and large environmental pollution. deep denitrification catalyst

Method used

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  • Deep denitrification catalyst and preparation method thereof
  • Deep denitrification catalyst and preparation method thereof

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 tetrathiotungstate solution is used to impregnate the carrier particles at 40°C. The converted tungsten sulfide content in the impregnation solution is 18% of the dry weight of the carrier. After aging for 8 hours and drying, the nickel hypophosphite The solution impregnates the carrier particles at 40°C, the converted nickel phosphide content in the impregnating solution is 7% of the dry weight of the carrier, after aging for 8h and drying, heat trea...

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 tetrathiotungstate solution is used to impregnate the carrier particles at 40°C. The converted tungsten sulfide content in the impregnation solution is 18% of the dry weight of the carrier. After aging for 8 hours and drying, the cobalt hypophosphite The solution impregnates the carrier particles at 40°C. The cobalt phosphide content contained in the impregnation solution is 7% of the dry weight of the carrier. After aging for 8h and drying, heat trea...

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 tetrathiotungstate solution was used to impregnate the carrier particles at 40°C. The converted tungsten sulfide content contained in the impregnation solution was 18% of the dry basis weight of the carrier. After aging for 8 hours and drying, the hypophosphorous acid containing A mixed solution of ammonium and ammonium paramolybdate was used to impregnate the carrier particles at 40°C. The converted molybdenum phosphide content in the impregnation so...

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Abstract

The invention relates to a deep denitrification catalyst and a preparation method thereof and mainly solves the problems that traditional hydrofining catalysts cannot deeply remove nitrides in oil, 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, titania or amorphous silica-alumina is selected as one carrier, and tungsten sulfide and at least one of nickel phosphide, cobalt phosphide or molybdenum phosphide are taken as active components, the problems are better solved. The catalyst needs not to be presulfurized, is simple and convenient to operate and low in pollution, has higher deep nitrogen removal rate than catalysts of the same kind and can be used in the hydrofining field of distillate oil.

Description

technical field [0001] The invention relates to a deep denitrification catalyst and a preparation method thereof. Background technique [0002] 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. Hydrofining technology can effectively hydrogenolyze sulfur, nitrogen, oxygen and other heteroelement compounds contained in oil to meet the needs of downstream processing. While having good development opportunities, hydrorefining technology will also face some new changes. At this stage, the crude oil mined by my country itself is relatively heavy and of poor quality, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J27/19C10G45/08
CPCB01J27/1853B01J27/19C10G45/08C10G2300/1037
Inventor 李旭光孔德金邹薇周亚新
Owner CHINA PETROLEUM & CHEM CORP
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