Modelling of Solid Recovered Fuel (SRF) Properties Based on Material Composition – Chloride Quality
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Producing solid recovered fuels (SRF) is a well-established route for recovering energy resources from municipal solid waste (household and/or commercial). Chloride content critically impacts the quality of SRF. It directly influences operation of thermal processes, having deleterious effects through the high temperature corrosion of the boilers and through demands placed on the flue gas treatment (FGT) system, which could impact emissions control. Whereas design and specification of process plant can mitigate the technical issues associated with the presence of chloride experienced during thermal treatment, processing such fuels is associated with increased capital, operating and maintenance costs. This, at best, restricts the uptake/use of SRF or increases the cost of its treatment towards achieving a reduced chloride content.

Resource Recovery from Waste Using the Input Flexibility of Waste Gasification Technology
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Nowadays, gasification of waste or biomass is becoming the great interest all over the world. Especially, gasification of municipal solid waste (MSW) has been well-researched in Japan. The development of MSW gasification technology was started in the 1970s in Japan because of oil crisis. Several technologies have been researched and developed. The Direct Melting System (DMS), which is the gasification and melting technology developed by Nippon Steel & Sumikin Engineering Co., Ltd., is one of the developed waste gasification technologies in this era. This technology was introduced for commercial use in Kamaishi City, Japan in 1979. As well as this waste technology, other gasification technologies have been developed for commercial use and installed.

CO2 Capture and Re-Use at a Waste Incinerator
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Recently a new innovative process developed by Procede Gas Treating B.V. has been commissioned at line 3 of the Twence plant, a Waste-To-Energy (WTE) plant located in the eastern part of the Netherlands. In this process the CO2, that usually is emitted to atmosphere, is in this new application, scrubbed from the flue gas and the obtained pure CO2 stream is used to produce a sodium bicarbonate slurry (SBC). Instead of the conventional SBC flue gas scrubbing process, where dry SBC particles are used, this SBC slurry will be injected to remove the acid components from the flue gas, before the gas is emitted to atmosphere. Due to the implementation of this process the carbon footprint of the Twence installation is reduced. The new SBC plant produces 8,000 tons of sodium bicarbonate annually and to produce this amount of SBC 2,000 ton per year CO2 is captured from the flue gas. The CO2 originates for about 50 percent from biomass.

Manufacturing of Solid Recovered Fuels (SRF) for Energy Recovery Processes
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
This contribution describes manufacturing processes and quality of three types of Solid Recovered Fuels – i.e. SRF low quality, SRF medium quality and SRF premium quality – that are used in energy recovery plants. In total, two case studies are reported. First case study is about the external processing and confectioning of non-hazardous household, industrial and commercial mixed wastes as well as the internal treatment and homogenisation of various waste fractions at the incineration plant for production of SRF low quality that is utilized in a Waste to Energy (WtE) stationary Fluidized Bed Incinerator. In the second case study, production of SRF medium quality and SRF premium quality that are used for substitution of primary fuels like coal and petrol coke in the cement kiln is described. Finally, data on SRF quality of all three investigated waste types will be summarized and discussed.

Brave New World – Selected Jurisdictional Pitfalls when Acting on International Waste-to-Energy Projects
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Over the last few years, Waste-to-Energy (WtE) projects became increasingly international. In times of low interest rates, solid infrastructure projects with their fix return rates are more and more attractive to project developers, international investors as well as EPC and O&M contractors. They attract financial and strategic investors which would otherwise not turn towards these rather long-term investments. Therefore, a continuously increasing number of international players from different jurisdictions is entering the global playing field.

Overview of the Pyrolysis and Gasification Processes for Thermal Disposal of Waste
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Thermal treatment of waste started in the 1870s in England with the first waste incineration plants and this technology was in short time adopted by many industrialised countries. Starting in the late 1970s waste incineration was blamed for emission of toxic compounds, in particular of dioxins, and public pressure initiated the decree of more and more stringent air emission standards in all countries which, again, induced significant improvement of the environmental performance of waste incineration.

Initial Operating Experience with the New Polish Waste-to-Energy Plants
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Waste-to-Energy plants are an integral part of modern municipal Waste Management Systems. Today recycling and energy recovery from waste are the only methods of dealing with municipal waste. This is demonstrated by Waste Management Systems in countries such as Germany, Sweden, the Netherlands, Belgium, Denmark and Austria, where the municipal waste management is limited solely to recycling and energy recovery from waste. The currently discussed concept of the latest circular economy package can hardly change anything in this matter. Poland, as one of the leaders among the new EU member states (since 2004), has still a lot to do within the scope of recycling and waste-to-energy.

Feasability Study of Capturing CO2 from the Klemetsrud CHP Waste-to-Energy Plant in Oslo
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
The municipality of Oslo by Energigjennvinningsetaten (EGE) was in December 2015 awarded funding from Gassnova – a state owned company that coordinates the Norwegian CCS-work – to conduct a feasibility study. The purpose of the feasibility study was to demonstrate at least one workable solution for carbon capture from energy recovery for waste, with technical descriptions, cost estimates, project plan and plan and budget for the next phase.

New Developments for an Efficient SNCR Monitoring and Regulation System by Evaluating the NOx Mass Flow Profile
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
When the SNCR process was introduced first in the eighties of the last century the focus was directed towards applying this low cost technology mainly in combustion plants where only relatively low NOx reduction rates were required. In these types of boilers, like waste-to-energy plants (WtE), the required NOx limits < 200 mg/Nm3 could be maintained easily. Today, NOx limits of 100 mg/Nm3 and lower can be achieved and guaranteed at all operating conditions for these applications. Therefore, the SNCR process represents the Best Available Technology (BAT) today. As a result, more and more owners of waste-to-energy plants take advantage of the low costs at comparable performance and replace their existing SCR system with SNCR.

Optimization of MBT considering Energy Efficiency and Protection of Resources and Climate
© Wasteconsult international (5/2011)
In 18 out of 46 MBTs in Germany biological treatment of organic-containing fine fractions takes place with the aim of achieving the deposition criteria exclusively through aerobic rotting. Thus energy potentials contained in the fine fractions are not utilized.

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