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Preparation method of eggshell-type hydrogenation catalyst

A hydrogenation catalyst, eggshell technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems affecting the service life of the catalyst, the low strength of the catalyst, etc., to reduce the pore volume and Loss of specific surface, large pore volume and specific surface area, and the effect of improving utilization

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcoming of this catalyst is that due to the use of hollow silica as a carrier, it will inevitably lead to a lower strength of the catalyst, which will affect the service life of the catalyst.

Method used

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  • Preparation method of eggshell-type hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of carrier

[0026] Take by weighing 300 grams of commercially available pseudo-boehmite powder, add 8 grams of fenugreek powder, 6 grams of carbon black, 4 grams of dilute nitric acid, mix well, add an appropriate amount of deionized water, and knead at room temperature for 30 minutes to form a plastic body. Extrude into four-leaf clover strips on the extruder. Dry the wet strip in a drying oven at 110°C for 4 hours, and keep the temperature at 650°C in a calcination furnace for 4 hours to obtain an alumina carrier.

Embodiment 2

[0027] Embodiment 2: the preparation of catalyst

[0028] Prepare the impregnation solution: add ammonium molybdate, nickel nitrate and phosphoric acid into water to dissolve, then add Tween 20 to adjust the pH value to 4.0, and then add tetradecyltributylammonium chloride to obtain the impregnation solution, in which MoO 3 The content of NiO is 22.1g / 100ml, the content of NiO is 5.3g / 100ml, the content of phosphorus is 2.1g / 100ml, the content of Tween 20 is 4.2g / 100ml, the content of tetradecyltributylammonium chloride is 1.2g / 100ml.

[0029] Weigh 100ml of the impregnating solution, put it into the impregnation tank, heat up to 40°C, then weigh 100 grams of the carrier of Example 1, put it into the impregnation tank, pass in appropriate air for bubbling, take it out after soaking for 2 hours, and Dry at 110°C in the air for 5 hours, and calcinate at 450°C for 4 hours to obtain the finished catalyst, coded as A.

Embodiment 3

[0030] Embodiment 3: the preparation of catalyst

[0031] The method is the same as in Example 2, the pH value of the impregnating solution is 4.5, and the MoO in the impregnating solution 3 The content of NiO is 22.1g / 100ml, the content of NiO is 5.3g / 100ml, the content of phosphorus is 2.1g / 100ml, the content of Tween 40 is 5.0g / 100ml, and the content of octadecyltrimethylammonium bromide is 3.0g / 100ml, the serial number of the obtained catalyst is B.

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Abstract

The invention discloses a preparation method of an eggshell-type hydrogenation catalyst. The preparation method is characterized in that conventional carriers are dipped in an active metal dipping solution containing one or more thickening agents and one or more active metal dispersants under the condition of air bubbling and then are subjected to drying and calcination so that the eggshell-type hydrogenation catalyst is obtained. The preparation method can effectively adjust the thickness of a surface active metal shell layer of the eggshell-type hydrogenation catalyst and the dispersity of active metals, stabilize the active metals of the eggshell-type hydrogenation catalyst, reduce the loss of the active metals, and reduce an eggshell-type hydrogenation catalyst product cost.

Description

technical field [0001] The invention relates to a preparation method of an eggshell-type hydrogenation catalyst, which can be used to prepare residual oil hydrodesulfurization and denitrogenation catalysts, and can also be used to prepare heavy distillate oil hydrogenation treatment catalysts, and can also be used for petroleum wax processing Hydrogen refining catalyst. Background technique [0002] Residual oil fixed bed hydrogenation technology can effectively remove impurities such as metals, sulfur, nitrogen and residual carbon in residual oil through hydrogenation, and provide high-quality feed for catalytic cracking. In recent years, with the continuous exploitation of crude oil, the quality of crude oil has become increasingly serious, and the demand for oil products has increased day by day. In order to meet the increasing demand for oil products, more suitable catalysts must be developed. [0003] The cost of catalyst production depends largely on the content of a...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J35/10C10G45/08
Inventor 张艳侠袁胜华张皓段日吴国林
Owner CHINA PETROLEUM & CHEM CORP
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