Analysis tool for co-production plants integrated in solid fule boilers

Important results from the project

The project has aimed to develop a modeling tool for analysis of how furnaces in large combustion plants are affected when retrofitted to enable simultaneous production of gas and pyrolysis oil. The project has resulted in a predictive model developed in the COMSOL software that can be used for detailed design, analysis of the impact on the boiler´s combustion function and identification of feasible boilers for conversion to co-production plants

Expected long term effects

With the developed calculation tool, an advanced analysis of the impact on the boiler fireplace (bed section, freeboard and heat-absorbing surfaces) is made possible, simulating co-production of e.g. gas and pyrolysis oil. These computing capabilities will help reduce the technical risks associated with the type of solutions that BioShare develops and thus contribute to the commercial development of plants for co-production in combustion plants

Approach and implementation

The project has been conducted as a software-based development project with the aim of describing the process in the lower part of a fluidized bed boiler, with a focus on e.g. mixing and temperature profiles. In addition to this, also to implement a model that takes into account fuel mixing, reactions and mixing in the freeboard of the combustion part and heat transfer to the heat-absorbing parts of a steam boiler. The project has in all essential parts been carried out according to the project plan and has resulted in a model that can be used for the design of commercial facilities.