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Hydrocarbon oil hydrotreating catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve problems such as ineffective application of heavy distillate hydrodesulfurization

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These prior art hydrotreating catalysts are all conventional hydrodesulfurization catalysts, and cannot be effectively applied to hydrodesulfurization of heavy distillates (especially diesel oil)

Method used

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  • Hydrocarbon oil hydrotreating catalyst and preparation method thereof
  • Hydrocarbon oil hydrotreating catalyst and preparation method thereof
  • Hydrocarbon oil hydrotreating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0068] According to the preparation method of the hydrotreating catalyst provided by the present invention, the active metal component W and Ni are introduced into the catalyst before step (1) using a conventional method. The method of introducing the active metal component W and Ni into the carrier component adopts at least one of the following methods: adding during the preparation of the dry rubber powder of the carrier component and then reshaping to form an alumina-based carrier containing W and Ni; The components are added during kneading and molding to form an alumina-based carrier containing W and Ni, and the carrier components are added after molding to form an alumina-based carrier containing W and Ni. Take alumina as the carrier component as an example to illustrate:

[0069] 1. Add in the preparation process of alumina dry rubber powder, such as introducing by co-precipitation or step-by-step precipitation, and then form, dry and roast to obtain an alumina carrier ...

Embodiment 1

[0096] This example describes the preparation method of the catalyst precursor. The specific surface area of ​​alumina dry rubber powder containing silicon and boron is 350m 2 / g, the pore volume is 0.90ml / g.

[0097] Weigh 400g of alumina dry rubber powder containing silicon and boron, add 6g each of citric acid and scallop powder, after mixing evenly, add 345g of acidic solution, HNO in the acidic solution 3 The weight concentration is 1.74%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a circular orifice plate with a diameter of 1.7mm. Dry at 120°C for 4h and then bake at 500°C for 3h. The prepared carrier note is designated as S1. The prepared support bar S1 was impregnated with a solution containing W and Ni, dried at 130°C for 4 hours, and then calcined at 500°C for 2 hours. The prepared alumina-based support containing W and Ni was designated as Z1.

[0098] Weigh 400g of alumina dry rubber powder containing silicon and bor...

Embodiment 2

[0105] Weigh 4.5g of citric acid, stir and dissolve in 45g of water to prepare a wetting solution. Take 300g of Z1 and spray the wetting liquid evenly on Z1 for 10 minutes. After spraying the wetting solution, the sample was divided into three parts on average, and the first sample was directly dried at 100 °C for 2 hours, and the above precursor was impregnated with an equal volume of impregnating solution containing Mo, Co, P and glycerin. The molar ratio is 0.06:1. After drying at 120°C for 3 hours, the finished product obtained is marked as C1; the second sample is cured for 1 hour, and the semi-finished product obtained is marked as C2 after being dried at 120°C for 3 hours; the third sample is preserved for 5 hours, after Dry at 120°C for 3 hours, and the finished product is denoted as C3.

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Abstract

The invention discloses a hydrocarbon oil hydrotreating catalyst and a preparation method thereof. The catalyst adopts an alumina-base support, and the active metal components are Mo, W, Co and Ni. The active metal components are distributed in the catalyst granules as follows: Co0 / Co1<Co1 / 2 / Co1<1, Mo0 / Mo1<Mo1 / 2 / Mo1<1, and the W and Ni are basically distributed uniformly. The preparation method comprises the following steps: introducing the W and Ni into the catalyst by a conventional process, and introducing the active metal components Mo and Co into the catalyst by the following steps: impregnating the alumina-base support with a wetting liquid containing an adsorbent by an unsaturated impregnation process, and impregnating with the supported active metal components Mo and Co. The hydrotreating catalyst is especially suitable to be used as a deep hydrodesulfurization catalyst for diesel, and has higher deep desulfurization activity.

Description

technical field [0001] The invention relates to a hydrotreating catalyst and a preparation method thereof, which is particularly suitable as a deep hydrodesulfurization catalyst for heavy distillate oil (especially diesel oil). Background technique [0002] As today's society has higher and higher requirements for the cleanliness of heavy distillate oil (especially diesel oil), the deep hydrodesulfurization technology of heavy distillate oil is becoming more and more important. The sulfur-containing compounds in heavy distillates mainly include aliphatic sulfides, sulfides, dibenzothiophenes, alkylbenzothiophenes, and alkyldibenzothiophenes, among which dibenzothiophenes, dibenzothiophenes, and dibenzothiophenes are difficult to remove. Thiophene compounds such as alkylbenzothiophene and alkyldibenzothiophene, especially 4,6-dimethyldibenzothiophene (4,6-BMDBT) and 2,4,6-trimethyldibenzothiophene Thiophene (2,4,6-BMDBT) sulfur-containing compounds with complex structures an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J32/00C10G45/08
Inventor 唐兆吉杨占林姜虹王继锋魏登凌温德荣
Owner CHINA PETROLEUM & CHEM CORP
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