Consulting About Steam Blowing A few days ago, we were consulted about a very interesting case that I would like to share my opinion as it would be useful for engineers involved with commissioning: Can carryovers and/or water droplets affect the target plate during steam blowing? Yes indeed. Carryovers can affect final results, specifically magnetite […]
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Kraft Recovery Boilers The Kraft process is a conversion reaction in which wood chips are digested in a batch reactor, at high alkaline water solution of NaOH and Na2S, to break up the lignin that holds the wood fibers together while obtaining almost pure cellulose, the main component of paper. The waste stream produced from
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Conductivity Changes Conductivity is an inherent property of water that measures the electrical current flowing through the ionic species in a solution; therefore, the higher the concentration of ions, the greater the likelihood of electrochemical reactions with the metal surface of the system that may precede corrosion. However, even considering high purity water, operational conditions
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Short-Term Overheating Commissioning is likely the most critical stage in the life time of a power plant due to the transient conditions which boilers are subjected to. From the first ramp-up to normal operation, the plant is exposed to a variety of transitory conditions, thermal expansions cycles, chemical excursion and equipment adjustments that potentially increase
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Chloride Attack on CS This photo illustrates the corrosion pattern of chloride attack on carbon steel and it was taken during an inspection carried out in a cooling water pump of a steam-water cycle. Description The pump was subject to severe degeneration due to the formation of corrosion cells in which the corrosion product forms
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