Laboratory scale tests on corrosion behavior of boiler

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  • A Summary of NOx Emissions Reduction from Biomass - …

    and pilot-scales. Commercial-scale tests were conducted in a variety of pulverized fuel boiler types including wall-fired, T-fired, and cyclone furnaces. Biomass input ranged up to 20% on a mass basis and 10% on an energy basis. The hypothesis: "Based on published full-scale data, can cofiring be used as an effective NOx emission reduction Get Price

  • Use of Additive to Mitigate Deposit and Corrosion Problems

    In this work, the combustion behavior of various biomass fuels, woody and herbaceous, were investigated in relation to boiler deposition and corrosion severity associated with ash. The combustion tests include cases of biomass alone without an …Get Price

  • Deposition and High-Temperature Corrosion in Biomass-Fired

    Lab-scale corrosion experiments, where metal test elements were covered with synthetic potassium salts and real deposits and exposed to a simulated flue gas containing HCl(g) and SO2(g), provided information about the corrosion rate and corrosion mechanisms of boiler steel under conditions similar to straw-fired boilers.Get Price

  • Boiler Tube Failure Analysis - Applied Technical Services

    ATS' Boiler Tube Failure Analysis Services. At ATS our program for determining the cause of failure incorporates laboratory testing and empirical data evaluation. Our comprehensive investigations result in conclusive reporting affording preventive assurances to our clients. Our applicable capabilities include, but are not limited to root cause Get Price

  • Correlation between field and laboratory exposures for

    Therefore, laboratoryua0exposures simplifying the conditions in the boiler can be used to study the corrosion mechanisms inua0more detail.In order to correlate corrosion behavior between field and laboratory exposure, samples of sameua0material were exposed in both field and laboratory scale.Get Price

  • Lab-Scale Investigations of High-Temperature Corrosion

    1114 Energy & Fuels 1999, 13, 1114-1121 Lab-Scale Investigations of High-Temperature Corrosion Phenomena in Straw-Fired Boilers Hanne Philbert Nielsen, Flemming J. Frandsen,* and Kim Dam-Johansen Department of Chemical Engineering, Technical University of Denmark, Building 229, DK-2800 Lyngby, Denmark Received January 5, 1999 The corrosion of …Get Price

  • Laboratory-scale corrosion tests on alloy 800 boiler

    Laboratory-scale corrosion tests on alloy 800 boiler tubing under simulated high-performance boiler conditionsGet Price

  • Corrosion problems in coal-fired boiler superheater and

    @article{osti_6781043, title = {Corrosion problems in coal-fired boiler superheater and reheater tubes: steam-side oxidation and exfoliation. Development of a chromate-conversion treatment. Final report}, author = {Rehn, I. M.}, abstractNote = {This report describes the continued work on steamside scale exfoliation begun under Task 2 and presented in the steamside corrosion …Get Price

  • Controlling Factors of Localized Corrosion in Boiler

    Sep 22, 2015 · In order to realize corrosion tendencies, laboratory corrosion tests were carried out under simulated deposits conditions by embedded methods. Corrosion rate largely increases from approx. 300 °C that is same as actual boiler's metal temperature of 300 °C under existing of deposits including Hydrogen-sulfate and Pyro-sulfate as shown in Fig Get Price

  • "Study of corrosion of materials in the sulfur-iodine

    Post mortem studies were conducted of parts from the recent Sulfur-Iodine Integrated Laboratory Scale (SI-ILS) test at GA. A HI distillation column boiler made of bulk tantalum alloy tube failed during refurbishment under shutdown conditions, and a few tantalum-coated steel parts (swage fittings) were found to have unexpected corrosion residues.Get Price

  • Laboratory scale tests on corrosion behavior of boiler

    Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project – OPTICORR) March 2006 Materials and Corrosion 57(3):244-251Get Price

  • Corrosion Monitoring — Reaction Engineering International

    Real-time corrosion monitoring is necessary in order to link the corrosion behavior with real power plant conditions in the region of the air heater. Applications of this technology in laboratory combustors, pilot-scale facilities and during field tests at coal-fired utility boilers have established its value as a tool for addressing high Get Price

  • Mitigation of High Temperature Corrosion in Waste-to

    The corrosion behavior was studied by conducting laboratory furnace tests on alloys of current and future interest to the WTE industry. Test specimens were coupons machined from boiler tubes to a nominal area of 3.2 cm² (0.5 in²). An chemical environment was introduced in an electrical furnace that replicates the fireside of superheater tube.Get Price

  • Correlation between field and laboratory exposures for

    Therefore, laboratory exposures simplifying the conditions in the boiler can be used to study the corrosion mechanisms in more detail. In order to correlate corrosion behavior between field and laboratory exposure, samples of same material were exposed in both field and laboratory scale.Get Price

  • Laboratory tests of high-temperature corrosion of steels B

    Dec 01, 2005 · Corrosion Tests Laboratory corrosion tests of boiler steels were carried out in accordance with standard techniques [8, 9]. These tests were performed in electrically heated vertical tube-type furnaces with an inner diameter of 40 mm (Fig. 1).Get Price

  • Jesper Liske | Chalmers University of Technology

    Therefore, laboratory exposures simplifying the conditions in the boiler can be used to study the corrosion mechanisms in more detail. In order to correlate corrosion behavior between field and laboratory exposure, samples of same material were exposed in both field and laboratory scale.Get Price

  • Development of a Laboratory-Scale Pilot for Studying

    This paper presents the results obtained using an innovative laboratory-scale corrosion unit, which simulates MSWI boilers conditions characterized by a …Get Price

  • Interactions of PbCl2 with Alkali Salts in Ash Deposits

    ABSTRACT: A novel temperature gradient laboratory-scale corrosion test method was used to study PbCl 2 migration, interactions with SiO 2, NaCl, Na 2 SO 4, KCl, K 2 SO 4, or NaCl−KCl (50:50 wt %) and corrosion of carbon steel in waste-fired boilers. Two different steel temperatures (200 and 400 °C) were tested.Get Price

  • Experimental Study Results on Corrosion Issues in Oxyfuel

    / Combustion test & simulation (2) Lab test for corrosion of tube material / Lab-scale test (3) Corrosion test under the actual flue gas / Actual atmosphere 2. Low temperature corrosion (1) Confirmation of the SO2/SO3/H2O characteristics in boiler process / Combustion test 3. Hg corrosion at CO2 liquefaction processGet Price

  • High temperature corrosion of boiler waterwalls induced by

    Apr 01, 2012 · High temperature corrosion of boiler waterwalls induced by chlorides and bromides – Part 2: Lab-scale corrosion tests and thermodynamic equilibrium modeling of ash and gaseous species Author links open overlay panel D. Bankiewicz a P. Vainikka b D. Lindberg a A. Frantsi c J. Silvennoinen d P. Yrjas a M. Hupa aGet Price

  • High temperature corrosion of boiler waterwalls induced …

    High temperature corrosion of boiler waterwalls induced by chlorides and bromides – Part 2: Lab-scale corrosion tests and thermodynamic equilibrium modeling of ash and gaseous speciesGet Price

  • Hot corrosion behavior of boiler tube materials in refuse

    May 27, 2002 · The corrosion test lasted 72 h.The corrosion resistance of each test specimen was evaluated by measuring its weight after test. The chemical composition of the ashes used is given in Table 3.After the test, the specimens were subjected to metallographic examination and electron probe micro analysis; for this purpose, they were embedded in a cold-setting resin, …Get Price

  • Lab-Scale Investigations of High-Temperature Corrosion

    Oct 22, 1999 · The corrosion of superheater tube material in straw-fired boilers was investigated in the laboratory. Metal test elements of boiler tube steel (X20CRMV121 and AISI 347FG) were covered with synthetic (KCl and/or K 2 SO 4) and real deposits, and exposed to a synthetic flue gas (6 vol % O 2, 12 vol % CO 2, 400 ppmv HCl, 60 ppmv SO 2, balance N 2) in 550 °C …Get Price

  • High temperature corrosion of boiler waterwalls induced …

    Apr 01, 2012 · Laboratory tests were also carried out to estimate the degree of corrosion of boiler steels under bromine containing deposits. A mixture of ZnBr 2 and K 2 SO 4 was selected for high temperature lab-scale corrosion testing since Zn, Br and K as well as sulfates were present in the deposit and it was possible to compare these results to previously published results with ZnCl …Get Price

  • Further Understanding of Furnace Wall Corrosion in Coal

    Nov 26, 2013 · A comprehensive low-NO x corrosion study consisting of pilot-scale combustion testing and laboratory retort exposure was performed. From the pilot-scale testing, the gas and deposit compositions in the lower furnace of utility boilers burning eight U.S. coals with a wide range of sulfur and chlorine contents were determined.Get Price

  • High temperature corrosion of boiler waterwalls induced by

    Laboratory tests were also carried out to estimate the degree of corrosion of boiler steels under bromine containing deposits. A mixture of ZnBr 2 and K 2 SO 4 was selected for high temperature lab-scale corrosion testing since Zn, Br and K as well as sulfates were present in the deposit and it was possible to compare these results to Get Price

  • High temperature corrosion of boiler waterwalls induced by

    Laboratory tests were also carried out to estimate the degree of corrosion of boiler steels under bromine containing deposits. A mixture of ZnBr2 and K2SO4 was selected for high temperature lab-scale corrosion testing since Zn, Br and K as well as sulfates were present in the deposit and it was possible to compare these results to previously Get Price

  • Corrosion in recycled wood combustion - reasons

    Two compounds were identified (KPb2Cl5 and K2PbCl4) in the boiler environment as well as in laboratory-scale corrosion tests. Thermodynamic calculations also showed the formation of these compounds. The corrosivity and the corrosion mechanism of potassium lead chlorides were further studied with the laboratory-scale measurements.Get Price

  • Effect of Gas Temperature and its Fluctuation on the High

    Mar 11, 2001 · Krause 6 and Harada 7 have previously discussed the effect of thermal gradients on the high temperature corrosion of heat-transfer tubes in boilers. Thus in order to better reproduce the corrosion rates observed in WTE plants with a laboratory scale test, the gas temperatures and their fluctuations were considered important parameters to study.Get Price

  • Water Handbook - Boiler System Failures | SUEZ

    Chapter 14 - Boiler System Failures. Deaerator Cracking. Feedwater Line Erosion. Economizer Tubes. Failures Due to Overheating. Failures Due to Corrosion. Successful, reliable operation of steam generation equipment requires the application of the best available methods to prevent scale and corrosion.Get Price

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