Technology

Air / Steam Regeneration Procedure for Primary Reforming Ccatalyst

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VULCAN Series VSG-Z101 Primary Reforming Air steam regeneration procedures can be used either on start-up of a reformer after it has cooled, or can be done in the shut down process. AIR STEAM REGENERATION ON SHUT DOWN AIR STEAM REGENERATION ON START-UP
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  • 1. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com GBH Enterprises, Ltd. AIR/STEAM REGENERATION PROCEDURE FOR PRIMARY REFORMING CATALYSTS Process Information Disclaimer Information contained in this publication or as otherwise supplied to Users is believed to be accurate and correct at time of going to press, and is given in good faith, but it is for the User to satisfy itself of the suitability of the Product for its own particular purpose. GBHE gives no warranty as to the fitness of the Product for any particular purpose and any implied warranty or condition (statutory or otherwise) is excluded except to the extent that exclusion is prevented by law. GBHE accepts no liability for loss, damage or personnel injury caused or resulting from reliance on this information. Freedom under Patent, Copyright and Designs cannot be assumed.
  • 2. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com VULCAN Series VSG-Z101 Primary Reforming Air steam regeneration procedures can be used either on start-up of a reformer after it has cooled, or can be done in the shut down process. AIR STEAM REGENERATION ON SHUT DOWN: After feed gas is removed, steaming should continue for a period of two hours during which rate of steam can be reduced to about 70% - 50% of design and temperatures adjusted downward to between 1300o F and 1325o F. Feed gas line should be blinded, and if air is to be introduced into the feed preheat section, some steam should be used as purge and carrier for air. When safety precautions are taken and steam is venting before the HT shift vessel, air may be introduced at a rate not to exceed 0.5% of the total steam flow at the specified temperature. Outlet temperature should be observed for exotherm; usually an increase of 50o F can be observed after air is introduced. This temperature will stabilize, since there will be combined carbon burn and oxidation of catalyst taking place at the same time. Exit gas should be analyzed for CO2 and H2S. CO2 initially will be approximately 19 - 21% at the peak of the carbon removal. Over a period of several hours, depending on the amount of carbon on the catalyst, the CO2 will drop off rather quickly to as little as 0.5 - 1%. When this occurs, air may be increased to 1%. If no further increase in CO2 is found, the regeneration is essentially complete. Air may then be removed and steaming procedure for normal cool down followed. AIR STEAM REGENERATION ON START-UP: Follow same safety precautions on feed gas line etc. and proceed with normal heat up with steam. When steam rate is at 50 - 70% of design and the temperature on the outlet is 1300o F - 1325o F, follow the same procedure outlined in the preceding method. On completion of air regeneration, remove air and steam for 2 hours before introducing feed gas to insure oxygen is removed from the system being used to introduce air as well as the reformer system.
  • 3. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
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