The small-to-medium-scale wasteWOIMA® WtE plant can be easily located adjacent to an energy off-taker enabling the sale of thermal energy instead of or in addition to electricity . A one-boiler-island wasteWOIMA20 plant generates annually roughly 3 MWe (net), i.e. ~35,000 MWh or 2 MWe (net), i.e. ~18,000 MWh + 13.5 MWth, i.e. ~110,000 MWh or 24 tph of superhea...

Due to the faster project development and delivery phases of the wasteWOIMA® WtE plant, it reaches positive net cashflow earlier that traditional stick-built plants. This early positive cashflow can significantly affect the project’s profitability and thus its feasibility. The small-to-medium-scale wasteWOIMA® WtE plant can be easily located in, or adjacent to, an industrial park to power their operations directly. A one-boi...

Due to the faster project development and delivery phases of the wasteWOIMA® WtE plant, it reaches positive net cashflow earlier that traditional stick-built plants. This early positive cashflow can significantly affect the project’s profitability and thus its feasibility. Faster project payback has also a positive impact on WtE plant owner’s gearing ratio, which affects their risk carrying capacity and cost of money. The e...

The wasteWOIMA® WtE power plant’s electricity generation capability is somewhat dependent on the plant’s condensing capacity, i.e. the level of vacuum that the condenser(s) can generate to enable the turbine to extract every last ounce of energy out of the steam flow. As standard, the wasteWOIMA® plant uses modular air-cooled condensers (ACC) that are Easy to deliver Fast to install ...

There are several steam turbine suppliers in the marketplace even in the small-to-medium-scale range that the wasteWOIMA® WtE power plant represents. Each supplier has slightly different approach to the business with emphasis on e.g. Maximal power output Reliability Low lifecycle costs Easy scalability Resilience to ambient conditions The selection of the right turb...

Currently, the wasteWOIMA® WtE power plant uses very conservative steam parameters (400oC / 40 barg) to ensure high availability, low maintenance costs and overall reduced risks related to fuel quality. These steam parameters are used independent of the fuel, i.e. even with “easy” fuels that pose less risks for heat corrosion. Several key factors affect the power plant’s power output, such as Steam quality

The grate firing system in the wasteWOIMA® WtE power plant is quite flexible and can accept a wide range of heterogenous solid waste fuels with LHV above 7 MJ/kg and moisture content below 55%. On top of this, a small amount (up to 10%) of low-calorific-value sludges can be added to the fuel mix and reduced to easily disposable bottom ash (slag) in the grate incineration process. Although the sludges contain very little energy, their small quantity does not affect th...

The waste fuel incineration process is one of the three key functions of any power plant besides the heat recovery boiler and flue gas treatment (FGT) system. Its purpose is to combust heterogeneous solid waste fuels flexibly to homogenous flue gas with good efficiency and with high tolerance for inert particles, such as metals, gravel and sand. Waste incineration is also a major source of income for the plant through tipping fees besides energy sales since w...

The heterogenous waste fuels, in particular MSW and industrial waste streams, used in waste-to-energy power plants often include valuable materials that can be recovered either prior to or after incineration. Metals, both ferrous and non-ferrous are one group that can quite easily be recovered after incineration from the bottom ash using complementing technologies such as sieving, crushing, as well as ballistic, magnetic and eddy current separation. The bottom ash material co...

Any power plant’s efficiency is affected by how much thermal energy is lost through radiation, convection and conduction. The closed cooling circuits of the wasteWOIMA® plant retain all the thermal energy transferred to it via waste incineration or cooling processes. Simultaneously, the closed circuit requires only minimal top up water and produces no wastewater There is significant amounts of thermal energy available in Co...