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Method for regenerating and prevulcanizing hydrogenation catalysts

A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst regeneration/reactivation, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of high energy consumption and long production cycle, and achieve simple equipment and high sulfur retention , the effect of reducing energy consumption

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This produces problems such as long production cycle and high energy consumption.

Method used

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  • Method for regenerating and prevulcanizing hydrogenation catalysts
  • Method for regenerating and prevulcanizing hydrogenation catalysts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 280°C for 3 hours, then raise the temperature to 480°C for 3 hours, then lower the temperature to 180°C. With 20g organic solvent (organic solvent is coking kerosene fraction), the ratio of carbon number 9~12 in the organic solvent is not less than 50%, elemental sulfur 10g and 5g (NH 4 ) 2 S mixing, heat treatment at 150°C. Then the mixed liquid was impregnated with the catalyst and treated at 180° C. for 3 hours, and then cooled down to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.

Embodiment 2

[0040] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 320°C for 4 hours, then raise the temperature to 500°C and bake for 4 hours, then lower the temperature to 200°C. With 30g organic solvent (organic solvent is coking kerosene fraction), the ratio of carbon number 9~12 in the organic solvent is not less than 50%, elemental sulfur 12g and 6g (NH 4 ) 2 S mixing, heat treatment at 150°C. Then the mixed liquid was impregnated with the catalyst, and treated at 200° C. for 6 hours, and then cooled down to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.

Embodiment 3

[0042] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 300°C for 3 hours, then raise the temperature to 500°C and bake for 3 hours, then lower the temperature to 150°C. With 20g organic solvent (organic solvent is coking kerosene fraction), the ratio of carbon number 9~12 in the organic solvent is not less than 50%, elemental sulfur 10g and 5g (NH 4 ) 2 S mixing, heat treatment at 135°C. Then the mixed liquid was impregnated with the catalyst, and treated at 150° C. for 6 hours, and then cooled down to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.

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Abstract

The invention discloses a method for regenerating and prevulcanizing hydrogenation catalysts. After charcoal is inactivated, inactivated hydrogenation catalysts are cooled to a certain temperature and then are directly prevulcanized correctly outside a device. With the method, the regeneration and the prevulcanization of inactivated hydrogenation catalysts are integrated, regenerated catalysts are directly prevulcanized without cooling, active metal components are enabled to be in an active state, and then, the vulcanization effect and the utilization rate of vulcanizing agents can be increased by direct prevulcanization. Experiments show that the process can also increase the activity recovery effect and the usage of regenerated catalysts. In addition, the method also has the advantages of reducing the energy consumption and the production cost and shortening the production period.

Description

technical field [0001] The invention relates to a hydrogenation catalyst regeneration and presulfurization method, in particular to a method combining hydrogenation catalyst regeneration and external presulfurization. technical background [0002] Due to the slow growth of crude oil production and increasingly heavy quality, the demand for clean oil products in today's world is increasing, and the product quality requirements are becoming more and more stringent. The hydrogenation process of petroleum distillate is the main technology for producing clean oil products at present, and the preparation technology of hydrogenation catalyst is the key of hydrogenation technology. The active metal component of the hydrogenation catalyst prepared by the common method is in an oxidized state. Before the oxidized state catalyst is used in industry, the active metal must be converted into a sulfurized state to have a high catalytic activity. With the long-term operation of the catalys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/02B01J37/20C10G45/04C10G45/08
Inventor 陈光高玉兰徐黎明李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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