Description: Das Projekt "Predicting the complex coupling of chemistry and hydrodynamics in fluidised bed methanation reactors for SNG-production from wood (bioSNG - fundamentals of methanation)" wird vom Umweltbundesamt gefördert und von Paul Scherrer Institut, Forschungsbereich Allgemeine Energie durchgeführt. Synthetic natural gas from wood-How can the synthesis be optimised? The production of bio natural gas as a fuel and combustible made of biomass that is rich in lignin presents an interesting alternative to the use (combustion) of biomass purely as a source of energy. In this project, researchers examine how the chemical reactions, the mass transfer and the fluid dynamics in fluidised bed reactors mutually influence each other. In experiments, they check whether the reactor simulation mirrors the actual processes precisely enough. This is important for optimising processes for the production of bio natural gas with the help of simulations. Background Woody biomass containing lignin, such as wood and straw, can so far only be transformed into a combustible product gas via thermochemical processes such as gasification. From the wood gas thereby gained, a synthetic natural gas is made via fluid bed methanation. This so-called bio-SNG (synthetic natural gas) can be fed directly into the existing natural gas network and is available as a renewable and CO2-neutral substitute for conventional fossil natural gas and as fuel for natural gas vehicles. The fluid bed methanation, during which wood gas is transformed into methane, works well at the pilot scale, but further research is necessary before it can be implemented in larger production plants. Aim The goal of the experiments is to collect on a 160 kW pilot plant data of sufficiently good quality that will enable researchers to validate the computer models. These models are used to upscale the fluid bed methanation to the scale of commercial plants and to optimise processes. During the experiments, the researchers will vary temperature, pressure, gas flows and gas composition. For process optimisation, the researchers will measure the fluid dynamics, the axial temperature and the gas phase concentration profiles and will use a catalyst sampling system. Significance The computer modules validated via the measurements on the pilot plant enable researchers to derive meaningful model experiments in the perspective of the 'observing passenger'. In these experiments, a small amount of a catalyst is exposed to a periodically changing gas mixture, which is what happens to the catalyst when there is movement in the fluidised bed reactor. This innovative approach can be applied to all chemical reactors with moving solids.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Biomethan ? Computer ? Lignin ? Holzgas ? Brennstoff ? Erdgas ? Hydrodynamik ? Gasnetz ? Katalysator ? Strömungstechnik ? Brunnen ? Brennbarer Stoff ? Chemischer Reaktor ? Energieträger ? Feststoff ? Gasgemisch ? Methan ? Stroh ? Temperatur ? Verbrennung ? Verfahrensoptimierung ? Vergasung ? Wirbelschicht ? Holz ? Gasförmiger Stoff ? Erdgasfahrzeug ? Klimaneutralität ? Energie ? Holzbiomasse ? Chemikalien ? Daten ? Energiequelle ? Ersatzstoff ? Modellversuch ? Reaktor ? Strömungsmechanik ? Synthese ? Industrieanlage ? Wertermittlung ? Messung ? Simulation ? Produktion ? Fahrzeug ? Forschung ? Produkt ? Stofftransport ? Chemische Reaktion ? Versuchsanlage ? Maßnahme ? Biomasseproduktion ? PROJEKT ? Erdgassubstitut ? BEWERTEN ? Berlin [Land] ? BETRAG ? BESTEHEND ? Zins ? Fluidised bed reactors ? WICHTIG ? Fluss [Bewegung] ? DRUCK ? GEGENWART ? GEKOPPELT ? GEMISCHT ? GUETER ? EINSATZ ? BEWEGT ? BEWEGLICH ? KONVENTIONELL ? Konzentrat ? Methanation ? PERSPEKTIVE ? Werkzeug ? ERNEUERBAR ? PROBE ? VERFUEGBAR ? ANGEWANDT ? SONSTIG ? Synthetic Natural Gas (SNG) from Wood ? Zeitschrift ? Thermochemischer Vorgang ? EXPERIMENT ? VERARBEITEN ? HILF ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2012-05-01 - 2015-04-30
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