een engaged in Taiwan's environmental protection industry for many years under the name of Lurgi. The company is now introducing its innovative and advanced technologies for flue gas desulphurization (FGD) by means of seawater scrubbing and for environmental sound incineration of pre-treated waste by means of circulating fluidized bed (CFB) to Taiwan.
Wet scrubbers are often used for flue gas cleaning behind coal or oil fired boilers, where the air pollutant sulphur dioxide is absorbed in aqueous solution. The most common process is using the wet limestone technology.
In coastal areas, seawater is often used as cooling medium in the condenser unit of power plants. It is an auspicious alternative for these power plants to also use the natural alkalinity of the seawater of the condenser unit as absorbent in the FGD for SO2-removal.
No storage or handling of any solids (limestone, gypsum) is necessary with this process. The increase of sulphate concentration due to the FGD process is within the natural variation limit of the seawater.
Stoker or grate type incinerators are the most common systems to handle household waste and have so far been used to treat Taiwan's waste arisings.
The circulating fluidized bed process (CFB) offers advantages in efficiency, unit capacity and environmental performance and uses pre-treated waste such as fluff or pellets as fuel in lieu of mixed garbage. It further allows the co-burning of alternative fuels should the primary fuel waste not be available in sufficient quantities.
These innovative and proven technologies are commercially available from Lentjes and ensure an improvement in environmental protection achievement, high efficiencies and technically sound design and show clear advantages with view to capital and operating expenses compared to the more traditional wet limestone FGD and stoker-fired incineration technologies.
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