Literature Review of Inhibition for Vanadate Attack,
Abstract
There are economic advantages associated with burning lower cost residual and certain crude oils, but the corrosive deposits rich in alkali and vanadium promote hot corrosion and negate the savings in fuel costs. It appears possible to attenuate vanadium hot corrosion provided that it is recognized that the problem consists of two related corrosion phenomena. They are the accelerated oxidation of alumina forming materials by the glass forming vanadium pentoxide and the accelerated oxidation of these materials by fused alkali vanadates. It is recommended that a research program be initiated aimed at obtaining: 1) A better understanding of the process by which the vanadium in the fuel is transferred to the surface of turbine components in order to assess the feasibility of preventing vanadic deposition, 2) Kinetic data and an understanding of the chemistry involved in the formation of the glasses that form on the surface of the advanced alloys and coatings when they are covered with a film of V205 in order to cause devitrification through alloy modification or a fuel additive and 3) kinetic and thermochemical data for the accelerated oxidation of alkali vanadate coated gas turbine materials to identify the rate controlling process or weakest link so that appropriate changes can be made to the alloy or coating through a fuel additive to attenuate the corrosion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1988
- Accession Number
- ADA198325
Entities
People
- N. S. Bornstein
Organizations
- United Technologies Corporation