In this investigation, the performance of a tower for absorption of sulphur dioxide gas into calcium carbonate solution has been studied. The trays had no downcomer and the tower itself was a scaled down pilot from industrial equipment. The industrial scale tower was used for clean up of 110000 m3/hr gas using 40 m3/hr alkaline solution. The study was composed of two parts. In the first section...

The computational cost of the full-scale flue gas desulfurization (FGD) tower with perforated sieve trays is too high, considering enormous scale ratio between hole at tray and relevant size tower. As a result, porous media model used to replace complex structure in this study, which has been validated for measured data both small- FGD Under lower inlet volume flow rate, simulation result four-...

Packed towers are widely used for distillation processes due to their higher separation efficiency and capacity in comparison to tray towers. The separation efficiency of the tower strongly depends on the liquid flow behaviour inside the packing, which becomes more complex with the appearance of a second liquid phase. Such flow behaviour can be observed in the three-phase distillation process i...

A Huey Cobra helicopter was just finishing up a nighttime practice run. The pilot was working on his low hover maneuvers at the air base when he tipped his tail rotor sharply backward, snapping off his tail boom. Without the tail —which keeps a helicopter from spinning around in circles— the helicopter took off like a pinwheel, sliding down the runway doing 360’s in a brilliant shower of sparks...

OBJECTIVE This study is a proof of concept to determine the efficacy of a custom-fabricated tray in placing antimicrobial and debriding agents in the periodontal pockets of persons with active gingival infections. Localized subgingival delivery of antimicrobial and antibiotic agents is routinely employed as adjunctive therapy for the treatment and management ofperiopathogens associated with per...

Fault diagnosis has always been an essential aspect of control system design. This is necessary due to the growing demand for increased performance and safety of industrial systems is discussed. Support vector machine classifier is a new technique based on statistical learning theory and is designed to reduce structural bias. Support vector machine classification in many applications in v...