Hydrotreating catalyst and preparation method and application thereof

A hydrogenation treatment and catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of weakening the adsorption of active components, easy agglomeration of metal components, and the loading capacity of active components Restrictions and other issues

Active Publication Date: 2018-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, the active components are first dissolved in deionized water, and then organic carboxylic acid substances are added to form a stable complex with the main metal. The impregnating solution has the characteristics of good stability and low viscosity, but under conventional roasting conditions, Partial coking of organic carboxylic acids on the catalyst surface reduces the number of active metal centers
Chinese patent CN101089132A discloses a hydrodesulfurization catalyst with

Method used

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  • Hydrotreating catalyst and preparation method and application thereof
  • Hydrotreating catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Prepare the catalyst precursor by using pseudo-boehmite dry rubber powder, weigh 200 grams of the above dry rubber powder, 100 grams of SB powder, add 4 grams each of kale powder and citric acid, add acidic solution after mixing, nitric acid in the acidic solution The concentration is 2wt%, and the rest is distilled water. Roll for 15-25 minutes, extrude with a clover orifice plate with a diameter of 1.7mm, dry at 120°C for 12 hours, and roast at 550°C for 3 hours to obtain a catalyst carrier, namely Z-1, whose properties are as follows: the pore volume is 0.72 ml / g, the specific surface area is 342m 2 / g.

Embodiment 2

[0036] Weigh an appropriate amount of carrier Z-1, and pre-impregnate carrier Z-1 with an impregnating solution containing picolinic acid. The content of picolinic acid in the impregnating solution is 1% of the mass of the carrier. The impregnated carrier is dried at 120°C for 3 Hours later, impregnate the immersion solution containing Mo, Ni, P, and the composition of the immersion solution is MoO 3 The content of NiO is 88.5g / 100ml, the content of NiO is 15 g / 100ml, and the content of P is 2.3g / 100ml. The impregnated sample is aged at room temperature for 10 hours and heat-treated at 200°C for 3 hours in an air atmosphere to obtain catalyst C-1. The carbon content in the catalyst was 2.5%.

Embodiment 3

[0038] Weigh an appropriate amount of carrier Z-1, and pre-impregnate carrier Z-1 with an impregnating solution containing furanic acid. The content of dipicolinic acid in the impregnating solution is 2% of the mass of the carrier. The impregnated carrier is dried at 120°C for 3 hours After that, impregnate the impregnation solution containing Mo, Ni, P, and the composition of the impregnation solution is MoO 3 The content of NiO is 89.5g / 100ml, the content of NiO is 15 g / 100ml, and the content of P is 2.5g / 100ml. The impregnated sample is aged at room temperature for 10 hours and heat-treated at 300°C for 3 hours to obtain catalyst C-2. The carbon content in the catalyst was 0.75%.

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Abstract

The invention discloses a hydrotreating catalyst and a preparation method and application thereof. The preparation method of the hydrotreating catalyst comprises the steps that (1), an alumina carrieris prepared or selected; (2) the alumina carrier prepared or selected in step (1) is dipped with a nitrogenous organic acid solution or an aromatic carboxylic acid solution; (3) the alumina carrier dipped with a pyridinedicarboxylic acid solution or the aromatic carboxylic acid solution in step (2) is subjected to low temperature drying treatment; and (4) the alumina carrier subjected to low temperature drying treatment in step (3) is dipped with an active component solution or active metal and an assistant, high temperature thermal treatment is conducted after dipping, and the hydrotreatingcatalyst is prepared. The catalyst prepared by adopting the method is high in metal component dispersity and sulfidity, and is liable to be sufficiently vulcanized, the number of generated active sites is large, improvement of the activity of the catalyst is facilitated, meanwhile, the preparation method is simple, and the production cost is low.

Description

technical field [0001] The invention relates to a hydroprocessing catalyst and its preparation method and application, in particular to a hydroprocessing catalyst suitable for heavy distillate oil hydrodenitrogenation and desulfurization processes, its preparation method and application. Background technique [0002] In the process of hydrotreating, the content of impurities such as nitrogen, sulfur, oxygen and metals in crude oil continues to increase, and the degree of heavy crude oil continues to deepen, which has become a fact before people. The existence of these impurities not only makes the catalyst Poisoning, but also emit a large amount of harmful gases such as sulfur oxides and nitrogen oxides, endangering human health and environmental protection. It is one of the main reasons for the formation of haze weather. It has high activity, low cost, and stability. Catalysts with good properties can not only ease the process conditions, but also reduce hydrogen consumptio...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/888B01J23/882B01J37/20B01J37/08C10G45/04
CPCB01J23/002B01J23/882B01J23/883B01J23/888B01J37/084B01J37/20C10G45/04C10G2300/202C10G2300/70
Inventor 唐兆吉杨占林姜艳姜虹温德荣
Owner CHINA PETROLEUM & CHEM CORP
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