Gordon England Surface Engineering Forum



Re: WC coatings on 317L stainless?


Posted by Ken Osment on December 04, 2003 at 04:46:18:

In Reply to: Re: WC coatings on 317L stainless? posted by sudhakar on July 01, 2003 at 17:21:08:

: : send some detail regarding these topic

We produce hydrotreated petroleum products from Bitumen extracted from the Fort McMurray Oil Sands in Northern Alberta Canada. Essentially extracted bitumen is heated to about 600 and pumped thru two stage "Charge" pumps and heated further to 800F then sent to a battery of delayed cokers and then fractionated into the various raw products we produce. The equipment although new is already exceeding design capacity and as a result extraction is carrying over significant quantities os silicates and minerals. These charge pumps had 317L specified to be able to withstand Naphthenic Acids, however the solids are eroding the pump internals long before corosion can set up. Hence is the need to find an acceptable method of protecting agaist this abrasion.


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