Method for regenerating and pre-vulcanizing hydrogenation catalyst

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

Inactive Publication Date: 2012-01-11
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 pre-vulcanizing hydrogenation catalyst
  • Method for regenerating and pre-vulcanizing hydrogenation catalyst
  • Method for regenerating and pre-vulcanizing hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 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. Mix 10g of elemental sulfur with 5g of (NH 4 ) 2 S mix and heat mix at 150°C. The mixed vulcanizing agent was then impregnated into the catalyst and treated at 180° C. for 3 hours. When the temperature is lowered to 90° C., add 20 g of organic solvent (the organic solvent is a fraction of coking kerosene), the proportion of carbon atoms in the organic solvent is not less than 50%, keep the temperature for 3 hours, and then cool down to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.

Embodiment 2

[0041] 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. 12g of elemental sulfur and 6g of (NH 4 ) 2 S mixing, heat mixing at 150°C. Then the mixed vulcanizing agent is impregnated with the catalyst, and treated at 200°C for 6 hours, and when the temperature is lowered to 80°C, add 25g of organic solvent (organic solvent is coking kerosene fraction), and the proportion of carbon atoms in the organic solvent is 9-12. Less than 50%, keep the temperature for 2 hours, then drop to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.

Embodiment 3

[0043] 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. Mix 10g of elemental sulfur with 5g of (NH 4 ) 2 S mixing, heat mixing at 135°C. Then impregnate the heated and mixed vulcanizing agent into the catalyst, and treat it at 150°C for 6 hours. When the temperature is lowered to 85°C, add 25g of organic solvent (organic solvent is coking kerosene fraction), the proportion of carbon atoms in the organic solvent is 9-12 Not less than 50%, keep the temperature for 3 hours, then drop 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 pre-vulcanizing a hydrogenation catalyst, which comprises the following steps of: after carrying out charcoal burning on the inactivated hydrogenation catalyst, cooling to a certain temperature; and then directly carrying out suitable pre-vulcanizing treatment and passivating treatment outside a device. In the method disclosed by the invention, the regeneration and vulcanization of the inactivated hydrogenation catalyst are organically combined, so that the generated catalyst is directly subjected to pre-vulcanizing and passivating treatment without being cooled, active metal components can be in a certain active state, and at the time, if the pre-vulcanizing is directly carried out, the vulcanizing effect and the utilization rate of a vulcanizer can be improved. A test shows that in the process, the activity recovery effect of the regenerated catalyst can be improved and the service performance of the regenerated catalyst can be improved. Meanwhile, due to the adoption of the method disclosed by the invention, the energy consumption can be reduced, the production cost is reduced and the production period is shortened.

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): B01J38/02B01J37/20B01J23/94C10G45/08
Inventor 陈光高玉兰徐黎明李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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