摘要:
Leaks in closed cooling systems containing an aqueous medium as the coolant, are sealed by electroless deposition of a metal or metal containing compound from a water soluble, easily reducible metal compound. A complexing agent may be added to the coolant to assist in solubilizing the easily reducible metal compound. In one embodiment, the reducible metal compound is formed in situ by attacking the conduit walls of the cooling system so as to form solubilized compounds, or compounds which can be solubilized by addition of suitable complexing agents.
摘要:
A process of removing water-soluble impurities from the working medium of a steam power plant is disclosed. Steam is bled from a high-pressure turbine downstream of the Wilson Line region. The steam is partially condensed, so that impurities in the steam are carried by the condensate. Moisture separators are disposed in the feed lines connecting the bleed lines with various heaters and the like. The bleed steam is supplied to the various heaters to heat the boiler feedwater and the working fluid of the turbine. The drains of the moisture separator are connected to a purification tank to remove the impurities from the condensate.
摘要:
Purity of boiler feedwater being the effluent of a condensate polishing plant in a steam power station is determined by a method in which some of the effluent is used as feedwater for an auxiliary boiler. The blow down from this boiler, which uses a much higher evaporation ratio than the main steam generator, is sampled and provides -- by measurement of its conductivity -- an indirect determination of condensate purity. With a condensate polishing plant consisting of more than two, e.g. three filter units, and with one filter unit shut down for regeneration one uses as feedwater for the auxiliary boiler effluent of that one of the other two filters which is nearest to its exhaustion state, i.e. the filter which has been in operation the longest at this time.