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Several short blowdown events remove sludge more effectively than a single continuous blowdown. Shorter blowdown events cause less significant changes in boiler water level, and are safer during periods of high steam demand. [5] Bottom blowdown piping drains the lowest parts of the boiler so it can be used to drain the boiler for servicing.
Blowdown or Blowing down may refer to: Windthrow or forest blowdown, a felling of trees by windstorm; Blowdown stack, a vertical containment structure at a refinery or chemical plant; Blowdown, a process plant controlled or emergency depressurization; Boiler blowdown, a steam-boiler process to remove impurities
A blowdown stack is an elevated vent or vertical stack that is used to vent the pressure of components of a chemical, refinery or other plant if there is a process problem or emergency. A blowdown stack can be used to complement a flare stack or as an alternative.
Blowdown is an internationally broadcast documentary television series that follows a team of explosive demolition experts as they prepare and implode iconic, ...
Disposal of blowdown fluids is generally to flare systems or, if safe to do so, non-fired blowdown drums. Blowdown may be strategically delayed by fire zone to shave peak flow and allow the flare to deal with the incoming gas. This is generally referred to as a staggered blowdown. Depressurization facility.
Surface blowdown line: It provides a means for removing foam or other lightweight non-condensible substances that tend to float on top of the water inside the boiler. Circulating pump : It is designed to circulate water back to the boiler after it has expelled some of its heat.
blowdown (or blow-off) cocks, which allow water to be ejected from the boiler to avoid concentration of impurities remaining after evaporation of steam. [3]: 8 Whistle Steam powered whistle, located on top of the boiler and used for signalling (by the number and length of notes) and warning of approach. [2] [5] [6]: 247–248 [3]: 96
Hot raffinate flowed into the blowdown drum and stack, and as it filled, some of the fluid started to flow into the ISOM unit sewer system via a 6-inch (15 cm) pipeline at the base of the blowdown drum. As the blowdown drum and stack filled up, hot raffinate shot out of the top of the stack and into the air, forming a 20-foot (6 m) "geyser". [57]