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High Chlorine coals are less costly and can create a byproduct
The advantages of using high chlorine coals are the lower cost and the ability to produce a byproduct. This article points out that Illinois coals with 0.2% chlorine content are being burned in many units without extreme corrosion. In fact, it is hard to draw a direct correlation between corrosion and chlorine content. Some coals with 0.3 % coal are being successfully utilized. The conclusion is that there are multiple factors creating the corrosion. Steps such as more even fuel combustion can be more important than chlorine content.
Revision Date: 7/11/2019
Tags: 221112 - Fossil Fuel 化石燃料, Coal, Combustion, Corrosion, USA
Calcium Bromide Liquid: Safety and Handling Guide GeoBrom® HG520
Calcium Bromide Liquid: Safety and Handling Guide
Revision Date: 7/20/2015
Tags: 221112 - Fossil Fuel 化石燃料, Great Lakes Solutions, Chemtura, Chemical, Mercury, Bromine, Safety, Mercury Removal, Corrosion
Corrosion Studies on GeoBrom® HG520 Vapor Space Study
A 90-day vapor space corrosion rate study was conducted using GeoBrom® HG520 calcium bromide solution and six selected metals at 20° and 50° C. ASTM Method “Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens” G1 - 03 (reapproved 2011) was used to prepare, clean, and evaluate tests specimens.
Revision Date: 7/20/2015
Tags: 221112 - Fossil Fuel 化石燃料, Chemtura, Great Lakes Solutions, Mercury, Chemical, Bromine, Mercury Removal, Corrosion
Corrosion Studies on GeoBrom® HG520 Total Immersion Study
A 90-day, total-immersion corrosion rate study was conducted using GeoBrom® HG520 calcium bromide solution and six selected metals at 20° and 50° C. ASTM Method “Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens” G1 - 03 (reapproved 2011) was used to prepare, clean, and evaluate tests specimens.
Revision Date: 7/20/2015
Tags: 221112 - Fossil Fuel 化石燃料, Great Lakes Solutions, Chemtura, Chemical, Mercury, Bromine, Mercury Removal, Corrosion
Corrosion Studies on GeoBrom® HG520 Partial Immersion Study
Brominated derivative products for mercury control… There was little to no corrosion observed on these coupons in the vapor space. Visually, all corrosion occurred in the liquid phase where half of the coupons were suspended. There was no increase in corrosion rate observed at vapor / liquid interface on any of the specimens. Based on this 90 day study, all specimens were less than 0.70 mpy corrosion rate with half the coupon below surface. Mild carbon steel (C-1018) gave the highest corrosion rate at 0.14 mpy at 20° C and 0.65 mpy at 50° C. All remaining specimens were under 0.10 mpy. ICP analysis of GeoBrom® HG520 samples refl ect elevated iron and chromium levels at end of the 90-day period. The maximum allowable corrosion rate for each specimen with GeoBrom® HG520 depends on the application.
Revision Date: 7/20/2015
Tags: 221112 - Fossil Fuel 化石燃料, Great Lakes Solutions, Chemtura, Bromine, Corrosion, Chemicals, Mercury, Mercury Removal, Corrosion
Demineralization and Degasification Webinar - Hot Topic Hour August 28, 2014
Advantages of combining membrane contactors and EDI. Focus on the choices that need to be made by purchasers and operators of ultrapure water systems for gas turbine combined cycle power.
Revision Date: 8/28/2014
Tags: 221112 - Fossil Fuel 化石燃料, SnowPure, Ultrapure Water, Kiewit, EDI, Membrane, Ultrapure Water, Corrosion
Flow accelerated corrosion is an important issue causing problems in turbulent areas such as elbows.
Revision Date: 8/28/2014
Tags: 221112 - Fossil Fuel 化石燃料, Kiewit, Oxygen, Demineralization, Corrosion
Improving Silica Removal by EDI and GTM by Michael Snow, Snowpure
The choice of EDI plus membrane contactors is the way to deal with high silica content.
Revision Date: 8/28/2014
Tags: 221112 - Fossil Fuel 化石燃料, SnowPure, EDI, Membrane, Demineralization, Corrosion
An aggressive form of corrosion has been found in relatively new flue gas desulfurization systems installed in U.S. coal-fired plants. In response, EPRI has launched a rapid-response project to investigate the root cause of the corrosion and to develop inspection and mitigation methods.
Revision Date: 7/23/2014
Tags: EPRI, FGD, Alloy, Corrosion
Corrosion in alloy wet scrubber
B&W analyzed alloy failure in in the reaction tank of 2 absorbers and concluded the cause was fluoride under deposit attack on the 2205 walls.
Revision Date: 7/23/2014
Tags: Babcock & Wilcox, Scrubber, FGD, Alloy, Corrosion
Comparative Study on Several Anti-Corrosion Materials for Power FGD System (几种防腐材料用于电力烟气脱硫系统的比较研究)
In the study organic-inorganic hybrid composite, epoxy modified silicone coating and vinyl ester flake mas-tic were comparatively used as several anti-corrosion materials that provided protection for flue gas desulfu-rization (FGD). The relationship between curing conversion rate of hybrid polymer and temperature was in-vestigated by differential scanning calorimeter (DSC). The adhesion strength, coefficient of thermal expan-sion and flame retardant properties of three anti-corrosion materials were measured and analyzed. A corro-sion test in 8% H2SO4 and 5% HCl at temperature cycle of 40˚C ~ 160˚C was applied to study corrosion re-sistance of several anti-corrosion materials. Gravimetric measurement and morphological observation of three materials before and after corrosion test were comparatively analyzed in the paper. The small weight change and good morphological structure of hybrid composite during corrosion test demonstrate that hybrid composite has better anti-corrosion properties than epoxy modified silicone coating and vinyl ester flake mastic.
Revision Date: 7/21/2014
Tags: Coating, Lining, Corrosion, Corrosion