Page 21 - Energy from Toxic Organic Waste for Heat and Power Generation

10 Energy from Toxic Organic Waste for Heat and Power Generation

Conversion Primary Product Secondary
technology products recovery products
Extraction
Char Chemicals
Pyrolysis Upgrading
Gasoline
Synthesis
Tars & oils
Energy Methanol
Gasification recovery
Gas Ammonia
Gas turbine
Engine Electricity
Combustion
Heat
Boiler

Fig. 2.1 Thermal conversion process and its by-products [1].

Power export
Air cooler
Electricity
Imported
electricity
Superheated Expanded steam
steam
Heat District heating
utilization

Combustion
chamber Catalytic filter S
Electrostatic REMEDIA Wet scrubber
precipitator
T
A
Superheaters
C
Waste
Boiler HRSG K
Energy recovery
from flue gas
Economizer
Natural
gas
Air preheating Process steam
system
Energy recovery Condensate
from steam Air Ash
Fig. 2.2 The layout of an incinerator [2].
and economical option due to the following reasons. (i) Most of the wastes
will burn without giving rise to noxious products of combustion (HCI, HF,
SO 2 , and NO x ) in significant quantities. (ii) The volume and mass occupied
by the waste is greatly reduced. A small volume of incombustible residues
is left. The heat of combustion is recovered in a waste heat boiler for steam