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Hydrodesulphurization catalyst activity measuring method and device for implementing the method

A hydrodesulfurization and catalyst technology, which is used in measuring devices, chemical analysis using catalysis, instruments, etc., can solve the problems such as the inability to obtain the degree of catalyst sulfurization and the long period of micro-reverse sulfurization experiments.

Active Publication Date: 2008-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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Problems solved by technology

However, the micro-reversal sulfidation test cycle is long, requiring more than 4 hours of experimental process, and the direct experimental data of catalyst sulfidation degree cannot be obtained.

Method used

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  • Hydrodesulphurization catalyst activity measuring method and device for implementing the method
  • Hydrodesulphurization catalyst activity measuring method and device for implementing the method
  • Hydrodesulphurization catalyst activity measuring method and device for implementing the method

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Experimental program
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Embodiment

[0055] Reagents and instruments

[0056] Co-Mo / γ-Al in a series of oxidation states 2 o 3 Catalyst and γ-Al 2 o 3 Provided by the Hydrogenation Catalyst Laboratory of the Academy of Petrochemical Sciences; 99.9% H 2 S gas was provided by Beijing Haipu Gas Co., Ltd., high-purity H 2 , N 2 From the Gas Plant of the Academy of Petrochemical Sciences.

[0057] TA 951 Thermogravimetric Analyzer, manufactured by DuPont Instruments.

[0058] Catalyst sample preparation

[0059] TG analysis samples: four catalyst samples of D1, D2, D3 and D4 are supported by Al 2 o 3 , The impregnation solution is ammonium molybdate and cobalt nitrate. After impregnating the active components on the carrier with pore saturation, activation treatment was performed at 90°C, 200°C, 250°C and 300°C for 3 hours respectively. The four catalyst samples had the same metal loading, 20% by weight of CoO, MoO 3 The weight percentage is 4.7%.

[0060] In-situ vulcanization thermogravimetric ana...

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Abstract

The invention provides an in-situ vulcanization thermogravimetric analysis method and a method for determining hydrodesulfurization catalyst activity, and devices for implementing the methods. The in-situ vulcanization thermogravimetric analysis method comprises the following steps of: placing a sample to de analyzed into an in-situ vulcanization thermogravimetric analysis device with inert atmosphere; increasing the temperature of the sample to be analyzed to a first temperature with a first heating up speed, dehydrating with constant temperature, and decreasing the temperature to a second temperature; increasing the temperature of the sample to be analyzed to a third temperature with a second heating up speed, introducing H2 and H2S, and increasing the temperature to a fourth temperature with the second heating up speed, keeping at the fourth temperature for 0.5-2h, decreasing the temperature after a TG curve is stable, and obtaining the weighting percentage of the sample to be analyzed from the TG curve.

Description

technical field [0001] The invention relates to an in-situ sulfidation thermogravimetric analysis method, a method for measuring the activity of a hydrodesulfurization catalyst and a device for implementing the method, more specifically, a CoMo / γ-Al 2 o 3 The invention relates to an in-situ sulfidation thermogravimetric analysis method of a hydrodesulfurization catalyst, a method for measuring the activity of the catalyst and a device for implementing the method. Background technique [0002] Hydrodesulfurization is a very important process in petroleum processing. Its main function is to remove impurity sulfur in oil products, so that the products meet the specifications of vehicle fuels or provide high-quality raw materials for subsequent oil refining processes. At present, the hydrodesulfurization catalysts used in industry basically use the sulfide of VIB metal Mo or W as the main catalyst, use the sulfide of VIII metal Co or Ni as the co-catalyst, and use activated alu...

Claims

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Application Information

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IPC IPC(8): G01N5/00G01N31/10
Inventor 方胜良徐广通
Owner CHINA PETROLEUM & CHEM CORP