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Title: Duct injection technology prototype development

This report describes a test program conducted to determine the corrosion rate of materials in the dry scrubber or duct injection systems. Four materials were evaluated: 1010 carbon steel, Corten, 317SS and Hastelloy C-276. The results show that acidic conditions result in higher corrosion rates than alkaline conditions for all the materials. The carbon steel, Corten and stainless steel show moderate to heavy pitting attack in the acidic environment. For the alkaline conditions, the corrosion rates of carbon steel and Corten were higher than the stainless steel or Hastelloy C-276. Also, the corrosion rate of abraded specimens were four time those of unabraded specimens in the flue gas. It is probable that areas of wall-wetting and plugging in the duct injection process will exhibit high rates of corrosion for the carbon steel, Corten, and stainless steel materials. General corrosion and pitting corrosion will predominate. Additionally, abraded duct areas will corrode at a significantly higher rate than unabraded duct materials. 6 refs., 11 figs., 7 tabs.
Authors:
 [1]
  1. (Babcock and Wilcox Co., Alliance, OH (United States). Research and Development Div.)
Publication Date:
OSTI Identifier:
6019612
Report Number(s):
DOE/PC/88852-T3-Rev.1
ON: DE92001791
DOE Contract Number:
AC22-88PC88852
Resource Type:
Technical Report
Research Org:
United Engineers and Constructors, Inc., Denver, CO (United States). Stearns-Roger Div.; Babcock and Wilcox Co., Alliance, OH (United States). Contract Research Div.
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 36 MATERIALS SCIENCE; CALCIUM HYDROXIDES; CORROSIVE EFFECTS; CARBON STEELS; CORROSION; CHLORINE COMPOUNDS; HASTELLOYS; STAINLESS STEEL-317; SULFURIC ACID; ABRASION; DUCTS; EROSION; FLUE GAS; FLY ASH; PH VALUE; PITTING CORROSION; SLURRIES; SORBENT INJECTION PROCESSES; SULFUR DIOXIDE; TEMPERATURE EFFECTS; AEROSOL WASTES; ALKALINE EARTH METAL COMPOUNDS; ALLOYS; ASHES; CALCIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COMBUSTION PRODUCTS; DISPERSIONS; GASEOUS WASTES; HALOGEN COMPOUNDS; HIGH ALLOY STEELS; HYDROGEN COMPOUNDS; HYDROXIDES; INORGANIC ACIDS; IRON ALLOYS; IRON BASE ALLOYS; MIXTURES; NICKEL ALLOYS; NICKEL BASE ALLOYS; OXIDES; OXYGEN COMPOUNDS; RESIDUES; STAINLESS STEELS; STEELS; SULFUR COMPOUNDS; SULFUR OXIDES; SUSPENSIONS; WASTES 200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions; 360105 -- Metals & Alloys-- Corrosion & Erosion