'flue' is an acceptable and usable word in written English, and is typically used to refer to a passage (usually a pipe) for conveying heat or smoke from a fireplace, furnace, etc.
Example sentence: We need to check the flue in the fireplace to make sure it is clear and not blocked.
Finally, volatile heavy metals remaining in the flue are absorbed on activated-carbon powder.
Meanwhile, RWE, a German utility, is building a plant which will use the residual heat of its own flue gas to dry lignite before burning it.
But there is a difficulty with PC plants: they spew out a huge volume of flue gas, of which CO2 is only a small part.
The flue gases are cooled in heat exchangers, producing steam to drive electricity-generating turbines.The gases are then passed to a cleaning system that filters fine particles from the flow and scrubs the gas to remove sulphur dioxide, acids and heavy metals.
The resulting flue gas is almost pure carbon dioxide.
The simplest, and easiest to bolt on to existing plants, treats carbon dioxide like any other pollutant, and extracts it from the flue gas.
It provides loans to small farmers, trains them in agronomy and sells them seeds and fertiliser, as well as the saplings they must plant if they cut other trees down for fuel to flue-cure their crop.
Three types of tobacco have traditionally been grown in the country: Virginia flue-cured, on the large commercial farms; burley, mostly by smallholders; and Turkish, of more limited extent.
Flue-cured tobacco, a large plant that may stand three to four feet (90 to 120 centimetres) high, is harvested with machines that carry several workers who ride the lower platforms of the machines, cut the leaves, and place them on conveyor belts, where the leaves are tied mechanically or by hand.
The success of the cigarette was due not only to the business strategies of the large firms but also to the rapid adoption by urban male youths of the relatively inexpensive and easy-to-smoke lighter flue-cured Virginia tobacco.
"It seems very likely there was what they call fly ash," she said, referring to ash which collected in the flues of the cremators.
