Waste power generation is the process of producing electricity by combusting waste. The waste power generation market includes the boilers, turbines, and emissions control systems used in WtE plants. The waste power generation market for "mass burn" (as-received waste on a moving grate) is the most common technology for municipal solid waste. The waste power generation market for "fluidized bed" combustion (using a bed of hot sand) can handle more heterogeneous waste and has lower emissions. The waste power generation market for "rotary kiln" is used for industrial waste.
The broader waste to energy market includes this segment. The waste power generation market for "boilers" must be designed to resist corrosion from chlorine (in plastics) and heavy metals. The waste power generation market for "superheaters" (to increase steam temperature) are often made of high-alloy materials. The waste power generation market for "slagging" and "fouling" (deposits on boiler tubes) are operational challenges.
The waste power generation market for "air pollution control" (APC) is critical. The waste power generation market for "acid gas removal" (spray dryers with lime, or wet scrubbers) removes HCl and SO2. The waste power generation market for "particulate removal" (baghouse filters, electrostatic precipitators) removes fly ash. The waste power generation market for "dioxin/furan" removal uses activated carbon injection. The waste power generation market for "NOx" removal uses selective non-catalytic reduction (SNCR) or SCR.
The waste power generation market for "bottom ash" handling (quenching and removal) is required. The waste power generation market for "ferrous" and "non-ferrous" metal recovery from bottom ash is common.
Looking ahead, the waste power generation market will see the adoption of "carbon capture" on the flue gas. The waste power generation market for "oxy-fuel" combustion (using oxygen instead of air) to produce a CO2-rich stream for capture. The waste power generation market for "corrosion-resistant" materials to allow higher steam temperatures (improving efficiency).
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