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Hydrofining catalyst of diesel oil and preparation method thereof

A hydrofining and catalyst technology, which is applied in the direction of refining hydrocarbon oil, petroleum industry, refining to remove heteroatoms, etc., can solve problems such as the inability to remove organic sulfides and nitrogen oxides, and achieve improved structure and surface acid properties, High desulfurization and denitrification activity, effect of improving acidity

Inactive Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] What the present invention aims to solve is that the diesel oil hydrotreating catalyst in the prior art uses composite zeolite plus alumina as a carrier, and the catalyst / carrier that is modified by adopting the VIB group and / or the VIII group metal cation exchange mode is only It can simply reduce the cracking of the diesel fraction and realize the hydrogenation saturation of aromatic hydrocarbons, but cannot effectively realize the technical problem of effectively removing organic sulfides and nitrogen oxides in the above-mentioned diesel fraction while achieving the above purpose; and then provides a A diesel hydrotreating catalyst that can effectively desulfurize and denitrogenate low-quality diesel oil while preventing diesel distillation and cracking and realizing hydrogenation saturation of low-quality diesel aromatics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 103g γ-Al 2 o 3 Carrier, 6.5g SAPO-11 and 6.5g sage powder are mixed, then the above mixture is put into a roller compactor, and rolled to an extrudable paste; the above paste is extruded into strips and dried at 100°C for 4 hours (dried at 100-130°C for 2-4 hours), and then calcined at 350°C for 5 hours (calcined at 350-500°C for 3-5 hours), to obtain a hydrorefining catalyst carrier.

[0025] Dissolve 3.5ml of nitric acid with a concentration of 85% in 90ml of water and stir to dissolve, then slowly add 51g of nickel nitrate hexahydrate with a purity of 98.2% and 8.1g of ammonium metatungstate containing 80.6% of tungsten oxide into the above acid solution, heat to dissolve A stable acid solution of the active ingredient is obtained.

[0026] Immerse the prepared catalyst carrier in a stable active component acid solution, take out the carrier after the immersion, dry the carrier at 100°C for 4 hours, and then bake it at 350°C for 5 hours to prepare the catalyst car...

Embodiment 2

[0028] 100g γ-Al 2 o 3 Carrier, 21.4g SAPO-5 and 21.4g safflower powder are mixed, then the above mixture is put into a roller compactor, and rolled to an extrudable paste; the above paste is extruded into strips and dried at 110°C for 3 hours , and then calcined at 450° C. for 4 hours to obtain a hydrorefining catalyst carrier.

[0029] Dissolve 6.4ml of nitric acid with a concentration of 85% in 90ml of water and stir to dissolve, then slowly add 92.8g of nickel nitrate hexahydrate with a purity of 98.2% and 17.7g of ammonium metatungstate containing 80.6% of tungsten oxide into the above acid solution, and heat Dissolution yields a stable acid solution of the active ingredient.

[0030] Immerse the prepared catalyst carrier in a stable acid solution of active components. After the immersion, take out the carrier, dry the carrier at 110°C for 3 hours, and then roast it at 450°C for 4 hours to prepare the catalyst carrier of the present invention. The above-mentioned diese...

Embodiment 3

[0032] 100g γ-Al 2 o 3 Carrier, 75g ZSM-22 (silicon-aluminum ratio is 120) and 75g squash powder are mixed, and then the above mixture is put into a roller compactor, and rolled to an extrudable paste; the above paste is extruded into strips, and Dry at 130°C for 2 hours, and then bake at 500°C for 3 hours to obtain a hydrorefining catalyst carrier.

[0033] Dissolve 3.8ml of nitric acid with a concentration of 85% in 90ml of water and stir to dissolve, then slowly add 53.2g of cobalt carbonate hexahydrate with a purity of 98.2% and 46.5g of ammonium metatungstate containing 80.6% of tungsten oxide into the above acid solution, and heat Dissolution yields a stable acid solution of the active ingredient.

[0034] Immerse the prepared catalyst carrier in a stable active component acid solution. After the immersion, take out the carrier, dry the carrier at 130°C for 2 hours, and then roast it at 500°C for 3 hours to prepare the catalyst carrier of the present invention. The ab...

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Abstract

The invention relates to a hydrofining catalyst of diesel oil, comprising a carrier and active constitutes. The active constitute is one or more of the VIB group metals and the VIII group metals, wherein, the carrier is composed of one or more of SAPO-5, SAPO-11, ZSM-22 and ZSM-23 molecular sieves which have one-dimensional pore canals, and gamma-Al2O3. The invention further discloses a preparation method of the catalyst on the basis of disclosing the hydrofining catalyst of diesel oil. The hydrofining catalyst prepared by the method in the invention can prevent the diesel oil distillates from cracking, realize the aromatics hydrogenation saturation of poor quality diesel oil, and simultaneously effectively realize the desulfuration and denitrification of poor quality diesel oil.

Description

technical field [0001] The invention relates to a catalyst which can be used for diesel hydrotreating and belongs to the technical field of catalysts. Background technique [0002] Diesel fuel is the most important power fuel in developing countries. It has high thermal power efficiency, low fuel specific consumption, and is relatively economical. high share. [0003] In the actual use process, the requirements for diesel performance are mainly divided into the following aspects: (1) Anti-knock performance, to ensure that diesel oil has a high and suitable cetane number through treatment; (2) Evaporation, that is, to ensure Diesel oil has a suitable light fraction, which ensures good startability (easy to burn) and no knocking phenomenon; (3) higher freezing point, the freezing point of diesel oil is closely related to its fraction , the heavier the fraction, the higher its freezing point. However, the above-mentioned performance requirements cannot be met by my country's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/12C10G45/06
Inventor 田志坚蒲延芳徐云鹏曲炜闻学兵
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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