
CRE BM Reviewer 1 (page 17 - 27)
Quiz by Jon Francis
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High quality of steam at MCR, ___ kg/hr, ___ ata, __ C at super heater outlet.
CFB contails all fundamental parts found in any fossil fired steam generation system. Namely FUEL, AIR, WATER, STEAM and ?
Start up and supplemental fuel firing is also provided - it begins conversion to oxides of carbon , hydrogen, sulfur and nitrogen?
Use for combustion transport , fluidization fuel and combustion products.
Furnace with steam drum, water cooled wall tubing and an economizer.
Produce in circuits at both the top of furnace (Radiant) , superheater backpass (convective) section.
Produce in circuits located in the reheater backpass (convective) section.
Multiple auxiliary System address operational needs for blending in other minerals that keep the coal combustion process moving.
Circuit Arrangement (1) for coal , sorbent and inert.
Circuit Arrangement (2) for start up.
Circuit Arrangement (3) - air supply.
Circuit Arrangement (4) heat exchange.
Circuit Arrangement (5)for oil, air supply, cooling water, service and instrument air.
Crushed Fuel, inert bed (sand), and sorbent (limestone) introduced air into furnace when preheated to a minimum operating temperature with start up burners.
Air input - small portion that admitted to fuel feed chutes.
Air input - introduced at a level above the plenumgrate so that combustion process essentially complete.
Recycle cyclone remove major portion of hot ash particles from the flue gas stream - hot ash settles into siphon seals.
With adequate back end cleaning system (being essentially free of S02 , NOx, CO and Particulates) this fan is use.
Feeder that charge the fuel from the fuel silo through the isolation valves into furnace front wall opening.
Start up iver bed burners are accessible from the ___ elevation platform. FL+mm
Siphon Seals directlyattached to revycle cyclone solid outlets and located at ____ elevation platform. FL+mm
Another name for air preheater? Complete
850 -900C , sorbent is fine granted limestone which react with sulfur dioxide release from the burning fuel to form gypsum or?
Roughly__ % of combustion air is introduced as primary or fluidizing air through the grate at the bottom and balance secondary air through multiple ports.
Zone of combustion- located at lower section of furnace.
Zone of combustion- located at upper section of furnace.
Primary loop- heat removed from flue gas exitting the recycle cyclone
Primary Loop - heat removal in pendant and surfaces located in the upper furnace region.
Heat removal- after backpass gasses further cooled in?
CFB Boiler meaning?