Bio-waste boilers market changes for 2020: decentralized solutions, local fuel sources and circular economy
- Demand for increased fuel flexibility to lower purchasing costs
- Trend of utilization of local renewable biomass and recycled fuels
- Plant size trend (power units) from hundreds MWel class to 10-50 MWel class
- Integration with decentralized energy production
- Continuously growing requests for multi-fuel boiler design
- Increasing penetration of WtE solutions and concepts
According to SHI FW, November 2019Continue Reading
Biomass resources are found almost everywhere and can become a reliable and renewable local energy source to replace fossil fuels. Energy produced from biomass can reduce reliance on an overloaded electricity grid and can replace expensive fuels used in local industries. The International Finance Corporation (IFC) presents this guide as a practical tool to help developers of and investors in biomass projects assess the technical and financial feasibility of the different biomass-to-energy options available to their businesses and industries. This guide describes all the necessary steps in the development of a biomass-to-energy project. Following this introductory chapter, the authors present an overview of the entire project development process, so that project developers have an idea of the overall process they are about to enter. Next, the guide describes biomass resources and how to secure biomass supply. This is followed by several in-depth chapters covering the technology aspects, plant design, plant procurement, construction, and operation. After the more technical aspects, the guide focus on framework conditions, investment costs, financial and economic analysis, and securing financing. Finally, the guide presents potential environmental and social considerations and concludes with a chapter on the lessons learned from implemented biomass-to-energy projects.
The approach here presented is used to determine representative fuel input values to be considered for reliable thermochemical simulations. Sensitivity analyses are also considered (not presented here).Continue Reading
Europe enters the winter period with more biomass-fired power capacity. In the Netherlands, coal-fired plants are in the commissioning stages of wood pellet co-firing.
- Engie’s 731MW Rotterdam plant at 10%, Uniper’s 1.1GW Maasvlakte (MPP3) plant at 15% and RWE’s 777MW Eemshaven A and B units at 15%. All are expected to begin commercial co-firing this year
- RWE’s 630MW Amer 9 plant continues to ramp up to 80% wood pellet co-firing in 2020, having reached 50% this March
- In the UK, MGT Power’s Teeside 299MW dedicated biomass combined heat and power plant is also due to come online in 2020
In the while, outside Europe, pellet imports in South Korea rose by just 3% on the year to 1.62mn t in the first half of 2019. Japan took 750,000t of wood pellets in the first six months of 2019 — 57% more on the year. Vietnam overtook Canada as the dominant pellet supplier to Japan in the first half of this year, accounting for a 56% share.
Data from Argus Biomass Infographic 2020 markets highlights – Timeline of market movements across Europe, Asia and North America
In a recent project, we have further developed a technical-economic framework to analyse the potential opportunity to include mineral additives for the operations optimization of a 13-MWel biomass plant. The plant is processing low quality woody fuels, with slagging and fouling challenges.
Different commercial possibilities are available and additive prices are varying. The techno-economic choice must take into account different variables including, for example, variations on:
- boiler performance
- boiler operating hours and/or downtime reduction
- SHs/heat exchangers lifetime, conventional cleaning programme variation
- additive dosing and injection equipment (CAPEX and OPEX)
- additive prices
- flue gas cleaning impact and adjustment
- ash disposal costs and ash handling arrangement
As a result of the full techno-economic modelling, additive type selection and break even point related to additive price was computed, for the specific plant.
A snapshot of some of the results is published below: the variation of O&M (fixed and variable) costs for the specific plant (€/year) is evaluated for two specific Ca- and Al-Si based additives (additivation rate 1,0 wt%) with respect to the baseline case (no additive), as a function of the additives price.
The wide range of the computed O&M cost variation is caused by mixing optimistic and pessimistic predictions related to the variables mentioned in the list above. After selecting the additive type, results were further refined reducing the uncertainty on the O&M cost variation prediction for the specific additivation rate.
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“Energy production from biomass is a decisive component of the energy transition. Currently, 185 TWh of electricity is produced from biomass in Europe, which means that biomass accounts for 18.4 % of renewable electricity generation. In Europe, Sweden, Italy, Germany and the United Kingdom were the countries with the highest electricity production from biomass in 2017.
Biomass is used as a fuel in thermal power plants or is fermented to produce methane in biogas plants. Biomass power plants meet the same requirements for the stability of the electricity grid as fossil-fired power plants. They are suitable for base-load as well as for the supply of balancing and control power. In addition, it is also possible to convert coal-fired power plants to biomass in order to continue using existing sites. Biogas is usually used in gas engines to generate electricity or can be fed into the natural gas grid. This contributes a considerable storage potential.
Biomass power plants and biogas plants can be used both in centralized and distributed systems. Biomass, as an all-round renewable energy source, is therefore an indispensable component of future energy supply systems.”
Text and picture courtesy of by VGB PowerTech e.V., August 2019. DownloadContinue Reading
A new interesting study, FYI at doi.org/10.1016/j.fuel.2018.02.047
As power generation from variable renewable energy sources such as wind and solar power continues to increase in the future, fewer baseload power plants will be needed. As a result, high operational flexibility is becoming a vital requirement for conventional power plants to allow for the smooth integration of the variable renewable energy sources (v-RES) into the grid. To understand the impact of high operational flexibility (increased cycling) for coal-fired power plant materials, five commercial coal boiler superheater and reheater materials were investigated under isothermal and cyclic conditions for 1000 h each. The candidate alloys investigated were: T91, VM12-SHC, TP347-HFG, DMV304 HCu and DMV310 N. The results (weight change kinetics and metallographic analysis) after exposure at a metal surface temperature of 650 °C clearly showed the impact of increased flexibility on the corrosion and oxidation of the materials. Oxide growth (weight gain), metal loss, oxide spallation, and grain boundary attack were found to be more severe under cyclic conditions than under isothermal conditions.