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Title: Catalyst regeneration process including metal contaminants removal

Abstract

Spent catalysts removed from a catalytic hydrogenation process for hydrocarbon feedstocks, and containing undesired metals contaminants deposits, are regenerated. Following solvent washing to remove process oils, the catalyst is treated either with chemicals which form sulfate or oxysulfate compounds with the metals contaminants, or with acids which remove the metal contaminants, such as 5-50 W % sulfuric acid in aqueous solution and 0-10 W % ammonium ion solutions to substantially remove the metals deposits. The acid treating occurs within the temperature range of 60.degree.-250.degree. F. for 5-120 minutes at substantially atmospheric pressure. Carbon deposits are removed from the treated catalyst by carbon burnoff at 800.degree.-900.degree. F. temperature, using 1-6 V % oxygen in an inert gas mixture, after which the regenerated catalyst can be effectively reused in the catalytic process.

Inventors:
 [1]
  1. (Lawrenceville, NJ)
Issue Date:
Research Org.:
HYDROCARBON RESEARCH INC
OSTI Identifier:
865048
Patent Number(s):
4454240
Assignee:
HRI, Inc. (Gibbsboro, NJ) OSTI
DOE Contract Number:  
AC05-77ET10152
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalyst; regeneration; process; including; metal; contaminants; removal; spent; catalysts; removed; catalytic; hydrogenation; hydrocarbon; feedstocks; containing; undesired; metals; deposits; regenerated; following; solvent; washing; remove; oils; treated; chemicals; form; sulfate; oxysulfate; compounds; acids; 5-50; sulfuric; acid; aqueous; solution; 0-10; ammonium; solutions; substantially; treating; occurs; temperature; range; 60; degree; -250; 5-120; minutes; atmospheric; pressure; carbon; burnoff; 800; -900; 1-6; oxygen; inert; gas; mixture; effectively; reused; desired metal; hydrogenation process; catalytic process; carbon deposits; including metal; substantially remove; regeneration process; process including; catalytic hydrogenation; metal contaminants; temperature range; aqueous solution; inert gas; sulfuric acid; atmospheric pressure; gas mixture; hydrocarbon feed; catalyst regeneration; undesired metals; spent catalyst; following solvent; generation process; metal contaminant; treated catalyst; solvent wash; /502/208/423/

Citation Formats

Ganguli, Partha S. Catalyst regeneration process including metal contaminants removal. United States: N. p., 1984. Web.
Ganguli, Partha S. Catalyst regeneration process including metal contaminants removal. United States.
Ganguli, Partha S. Sun . "Catalyst regeneration process including metal contaminants removal". United States. https://www.osti.gov/servlets/purl/865048.
@article{osti_865048,
title = {Catalyst regeneration process including metal contaminants removal},
author = {Ganguli, Partha S.},
abstractNote = {Spent catalysts removed from a catalytic hydrogenation process for hydrocarbon feedstocks, and containing undesired metals contaminants deposits, are regenerated. Following solvent washing to remove process oils, the catalyst is treated either with chemicals which form sulfate or oxysulfate compounds with the metals contaminants, or with acids which remove the metal contaminants, such as 5-50 W % sulfuric acid in aqueous solution and 0-10 W % ammonium ion solutions to substantially remove the metals deposits. The acid treating occurs within the temperature range of 60.degree.-250.degree. F. for 5-120 minutes at substantially atmospheric pressure. Carbon deposits are removed from the treated catalyst by carbon burnoff at 800.degree.-900.degree. F. temperature, using 1-6 V % oxygen in an inert gas mixture, after which the regenerated catalyst can be effectively reused in the catalytic process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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