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Preparation method of hydrotreating catalyst

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of affecting the catalyst's reactivity and affecting the high dispersion of active components And other issues

Inactive Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only affects the highly dispersed active components on the surface of the carrier, but also brings adverse effects to the catalyst during the later loading process, directly affecting the reactivity of the catalyst.

Method used

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  • Preparation method of hydrotreating catalyst
  • Preparation method of hydrotreating catalyst
  • Preparation method of hydrotreating catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 (preparation of alumina carrier)

[0020] Weigh 200 grams of aluminum hydroxide dry rubber powder, 100 grams of SB powder, add 4 grams of kale powder and 4 grams of citric acid, mix well and add acidic solution, the concentration of nitric acid in the acidic solution 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 bake at 550°C for 3 hours to obtain an alumina carrier, namely Z-1, whose properties are as follows: the pore volume is 0.72ml / g, the specific surface area is 342m 2 / g.

Embodiment 2

[0022] Weigh an appropriate amount of carrier Z-1, and impregnate carrier Z-1 with an impregnating solution containing Mo, Ni, P, 2-amino-1,3 propanediol in equal volume. The composition of the impregnating solution is MoO 3 The content of NiO is 88.5g / 100ml, the content of NiO is 15 g / 100ml, the content of P is 2.3g / 100ml, and the molar ratio of the amount of 2-amino-1,3 propanediol to Ni atoms in the final catalyst is 0.5:1. Microwave treatment was carried out after impregnation. The power of microwave was 8 W / g, and the treatment time was 15 minutes. The sample after microwave treatment was dried in air atmosphere at 180°C for 3 hours to obtain catalyst C-1. The catalyst composition was 23%MoO 3 , 3.6%NiO, 1.5%p.

Embodiment 3

[0024] Weigh an appropriate amount of catalyst carrier Z-1, impregnate the carrier Z-1 with an impregnation solution containing Mo, Ni, P, 2-amino-1,3 propanediol in equal volume, the composition of the impregnation solution is MoO 3The content of NiO is 89.5g / 100ml, the content of NiO is 15 g / 100ml, the content of P is 2.5g / 100ml, and the molar ratio of the amount of 2-amino-1,3 propanediol to the Ni content in the final catalyst is 1:1. The impregnated sample was subjected to microwave treatment. The power of the microwave was 10 W / g, and the treatment time was 15 minutes. The sample after microwave treatment was dried in an air atmosphere at 150°C for 1 hour to obtain catalyst C-2. The catalyst composition was 23%MoO 3 , 3.6%NiO, 1.63%p.

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Abstract

The invention discloses a preparation method of a hydrotreating catalyst. The preparation method comprises the following steps: (1) preparing an impregnating solution containing group-VIII metals, group-VIB metals and 2-amino-1,3 propylene glycol, wherein the molar ratio of 2-amino-1,3 propylene glycol in the impregnating solution to group-VIII metal atoms contained in a final catalyst is 0.1:1 to 2:1; (2) impregnating an aluminum oxide carrier by adopting the impregnating solution prepared in the step (1) and firstly treating for 2-60 minutes under the condition that the microwave power is 2-20 W / g after the end of impregnation; then drying to prepare the hydrotreating catalyst. The catalyst prepared by the preparation method disclosed by the invention is easy to fully vulcanize; more Class-II active centers are generated, so that the effective utilization rate of active components is increased, and the activity of the catalyst is improved.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation treatment catalyst, in particular to a preparation method of a hydrogenation treatment catalyst suitable for heavy distillate oil hydrodenitrogenation and desulfurization processes. Background technique [0002] The content of impurities such as nitrogen, sulfur, oxygen and metals in crude oil is constantly increasing, and the degree of crude oil is becoming heavier. It has become a fact before people. The existence of these impurities not only poisons the catalyst in the subsequent treatment process, but also emits A large amount of harmful gases such as sulfur oxides and nitrogen oxides are released, endangering human health and environmental protection. The use of catalysts with high activity and good stability can not only ease the process conditions, but also reduce hydrogen consumption and achieve energy saving and consumption reduction. [0003] The hydrotreating process is to loa...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/882B01J35/10C10G45/08
CPCC10G45/08B01J23/002B01J23/882B01J23/883B01J2523/00C10G2300/202B01J35/60B01J2523/31B01J2523/68B01J2523/847B01J2523/845
Inventor 唐兆吉杨占林姜虹温德荣王平孙立刚
Owner CHINA PETROLEUM & CHEM CORP
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