Non-precious metal inactivated hydrogenation refining catalyst recovery method

A deactivated catalyst, hydrogenation refining technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of catalyst activity loss, solvent recycling and other problems, to achieve The effect of low cost and simple operation

Inactive Publication Date: 2005-01-26
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After this patent treats the hydrogenation refining catalyst with a water-containing solvent, the activity of the catalyst will be lost, and the solvent does not mention that it can be recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Rinse 200ml of the deactivated hydrotreating catalyst four times with anhydrous methanol at a volume ratio of 2:1, the methanol will no longer change color, dry the catalyst, put it into a small hydrogenation test device, and vulcanize it under a pressure of 3.0 Mpa, temperature 290°C, space velocity 1.0h -1 , The ratio of hydrogen to oil is 300:1, the heavy oil is fed into the third line, and after 48 hours of stability, the reaction pressure is 3.0Mpa, the temperature is 280°C, and the space velocity is 1.0h -1 1. Sampling under the condition of hydrogen-oil ratio of 300:1, the deacidification effect of the produced oil under the same conditions is equal to that of the produced oil using fresh catalyst.

Embodiment 2

[0024] Wash 200ml of the deactivated hydrotreating catalyst three times with anhydrous methanol at a volume ratio of 1.5:1, the methanol will no longer change color, dry the catalyst, put it into a small hydrogenation test device, and vulcanize it under pressure 3.0Mpa, temperature 290℃, space velocity 1.0h -1 , Hydrogen oil ratio 300:1, into the catalytic diesel, after 48 hours of stability according to the reaction pressure 3.0Mpa, temperature 290 ℃, space velocity 1.0h -1 1. Sampling under the condition of hydrogen oil ratio of 300:1, the oxidation stability of the produced oil under the same conditions is equal to that of the produced oil using fresh catalyst.

Embodiment 3

[0026] Rinse the deactivated hydrofining catalyst with anhydrous methanol for the first time at a volume ratio of 1.5:1, and then wash twice with a volume ratio of 1:1. The methanol will no longer change color. Dry the catalyst and put it into a small Hydrogenation test device, after vulcanization, the vulcanization conditions are pressure 3.0Mpa, temperature 280°C, space velocity 1.0h -1 , The ratio of hydrogen to oil is 300:1, feed 60DN neutral oil, and after 48 hours of stability, press the reaction pressure of 3.0Mpa, temperature of 280°C, and space velocity of 1.0h -1 1. Sampling under the condition of hydrogen-oil ratio of 300:1, the deodorization effect of the generated oil under the same conditions is the same as that of the generated oil using fresh catalyst.

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PUM

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Abstract

The invention discloses a non-precious metal inactivated hydrogenation refining catalyst recovery method which consists of, processing the devitalized catalyst by carbon burning and with absolute methanol or ethanol or lightweight petroleum solvent, wherein the volume ratio of absolute ethyl alcohol and devitalized catalyst is 1-2 : 1, flushing, and reclaiming the absolute ethyl alcohol through filtration.

Description

[0001] Involved areas [0002] The invention relates to a regeneration treatment method of a deactivated hydrofinishing catalyst, in particular, a regeneration treatment method of a non-noble metal deactivated hydrofinishing catalyst. Background technique [0003] Non-precious metal hydrorefining catalyst is a catalyst used in large quantities, used in petroleum processing industry, suitable for refining of various distillate oils and supplementary refining of lubricating oil. In the refining process, the catalyst containing non-precious metals and carrier materials is under a certain temperature and pressure, and after a long period of operation in the reactor, the surface of the catalyst is covered by carbon deposits and metal impurities, resulting in reduced catalyst activity. The carbon on the surface of the catalyst can be regenerated by burning, but the catalyst deactivation caused by metal deposition cannot be removed by burning. These metal impurities are deposited on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/52C10G45/00
Inventor 熊春珠刘亚娟晋新普彭瑜何萍李辉
Owner PETROCHINA CO LTD
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