A hybrid classical/fuzzy control methodology is presented to integrate low-level machine control and high-level supervision for the steam temperature and water level processes of the power plant boiler. The coupling between two spraying systems can be reduced using hybrid coarse-fine intelligent control with qualitative decoupling strategy. A hierarchical fuzzy system is used for the water leve...

includes materials such as waste oil, solvents, and some boiler cleaning fluids which have a heating value. There is at least one boilcleaning product that has a positive heating value. During the boiler cleaning process, the fluid is collected in a temporary storage tank, after the cleaning process is completed it is reinjected into the boiler as essentially an additional heat input to the boi...

A prototype analyser incorporating commercial analytical instrumentation has been used to monitor the sucrose contamination of boiler feed water. The instrument has been designed to use a commercially available pulsed amperometric detector and incorporates a short chromatographic column. This allows the choice of flow-injection or chromatographic mode of operation. The former is simpler, but no...

This article discusses the issues of estimating time to achieve normalized WCR indicators when dosing corrective reagents into a two-loop waste heat boiler, with parallel scheme for supplying feed water circulation circuits. Calculations optimal required reach regime parameters amine-containing are given. The also provides calculations parameters, depending on flow rate in each boiler

Brines produced by desalination processes such as reverse osmosis (RO), electrodialysis reversal (EDR) and ion-exchange (IX) holds pollution potential for the water environment if not properly handled. These brines contain a high water content (95–98%) and chemicals that could possibly be recovered for reuse. Therefore, direct contact membrane distillation (DCMD) which has the potential for wat...

Major furnace explosions have resulted in the deaths of personnel, extremely expensive repair costs and, in most cases, loss of revenue during the repair period. For a large power station boiler the total cost of a furnace explosion could easily be in the $10M to $20M range. The protection systems fitted to a modern boiler have been developed to the stage where boiler explosions are a rare occu...

This paper describes a prototype instrumentation system for photogrammetric measuring of bed and ash layers, as well as for flying particle detection and pursuit using a single device (CCD) web camera. The system was designed to obtain images of the combustion process in the interior of a domestic boiler. It includes a cooling system, needed because of the high temperatures in the combustion ch...