The decarbonization of distributed biomass conversion systems requires new process architectures that combine renewable gas production with efficient carbon management. A promising pathway is the integration of oxyfuel combustion into thermochemical conversion chains, enabling both energy recovery from residual gas streams and the generation of high purity CO₂ for subsequent utilization or storage. This contribution presents an ongoing research effort focused on coupling biomass derived product gases with an oxyfuel operated burner system to achieve stable combustion, controlled temperature profiles and an optimized CO₂ rich flue gas composition suitable for downstream capture. The investigated process chain involves upgrading volatile compounds produced during thermochemical biomass conversion into a hydrogen and CO rich syngas. Non condensable fractions that cannot be exploited for further synthesis are directed to an oxyfuel combustion unit. This burner operates with pure oxygen and recirculated CO₂ instead of air, avoiding nitrogen dilution and allowing the formation of a flue gas dominated by CO₂ and water vapor. The work focuses on the design and optimization of a 50 kW burner system equipped with staged injection and water assisted temperature control to ensure stable and low emission combustion of variable gas compositions commonly associated with decentralized biomass systems. Since the research is ongoing, the contribution highlights the conceptual framework, modelling activities and planned experimental program. Key topics include flame stabilization under low calorific values, pollutant destruction—especially tars and higher hydrocarbons—heat transfer characteristics in CO₂ rich atmospheres, and strategies to maximize CO₂ concentration in the flue gas. Special attention is given to the interaction between burner design, oxygen supply, and flue gas recirculation rates, which jointly determine temperature control, residence times and burnout quality. The overarching objective is to demonstrate that the integration of oxyfuel combustion into biomass based energy systems can create a highly efficient, climate positive process chain that supplies renewable heat while generating a capture ready CO₂ stream. The work thus contributes to the development of flexible, modular, and low emission thermal conversion technologies capable of supporting distributed energy infrastructures and future carbon managed industrial regions.