Title:
Model-based Online-estimation of Product Gas Properties in a Dual Fluidized Bed Steam Gasification Plant using Measurements from the Coarse Gas Cleaning Section
Author(s):
Kolm, M., Reiter-Nigitz, T., Gölles, M., Niederwieser, H., Bayer, J., Benedikt, F., Aichernig, C., Horn, M.
Document(s):
Paper
Slide presentation
Abstract:
A promising technology for the thermochemical conversion of a variety of feedstock into a valuable product gas is the advanced dual fluidized bed steam gasification process. Currently, a key challenge is the economically efficient operation of this technology in an industrial scale, which can barely be achieved due to various reasons. An asset for this would be the online knowledge of key performance indicators to quantify the process and its efficiency. However, many key performance indicators require the hardly measurable product gas water content at the gasification reactor’s outlet. Therefore, a method has been developed to estimate the product gas water content online in a model based way. Static and dynamic mass balances over the quench unit of the coarse product gas cleaning together with comparably cheap liquid level measurements are utilized. In addition to the product gas water content, the same method has been applied to the biodiesel scrubber unit of the coarse product gas cleaning to estimate the product gas volume flow. Measurement and model uncertainties are accounted for in a systematic way by two linear Kalman filters. The comparison of the estimated product gas water content with real measurement data from an advanced dual fluidized bed steam gasifier indicates a good performance of the presented method. The estimated dry product gas volume flow matches the measured dry product gas volume flow of an installed orifice plate on average well but fluctuates too much and cannot capture the required dynamics to render the orifice plate measurement obsolete. However, the estimated dry product gas volume flow can be used to track the pollution of the orifice plate.
Keywords:
product gas, soft sensor, dual fluidized bed gasification, water content, volume flow
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Gasification for synthesis gas production
Event:
33rd European Biomass Conference and Exhibition
Session:
4BO.13.3
Pages:
668 - 674
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-4BO.13.3
Price:
FREE
