CORDIS provides links to public deliverables and publications of HORIZON projects.
Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .
Exploitable results
The aim of this project was the development of a fluidised bed gasification process for the production of a hydrogen rich gas from biomass.
To achieve this aim, a 500kWth pilot plant was build and tested, a catalyst for fluidised beds was developed and fundamental research on the fluid dynamics was done. The pilot plant consists of a feeding system, the gasifier, a flue gas treatment and a product gas treatment system and a fuel cell with an extra gas upgrading system. The gasification reactor consists of two zones, a gasification and a combustion zone. The circulating bed material serves as heat carrier from the combustion to the gasification zone. Steam is used as gasification agent and a catalyst is used as bed material to increase the amount of hydrogen and reduce the amount of tar in the product gas. The erection of the pilot plant was finished in July 2000 and then the first tests started. During start up of the pilot plant the following problems occurred:
-Damaging of PTFE bags.
-Tar condensation on the plant in particular on the product gas blower and stainless steel bag.
-Long heating-up time.
These problems were solved, but it was not possible to do the whole experimental programme, which was defined in the contract (tests of catalyst in the pilot plant, tests of fuel cell together with gasifier).
The experiments done till the end of the project, showed, that the nitrogen content in the product gas is below 5% and that the necessary circulation rate can be reached easily. On the cold flow model at UCL the circulation rate, the gas cross-flow and the behaviour of the biomass was investigated. The results, showed, that the pilot plant was designed well and will operate as provided. Additionally, a new scaling parameter was introduced, which enables calculating the circulation rate in dependency of the total amount of bed material inside the gasifier.
The work of ECPMS and UNIVAQ aimed at the development of a catalytic system. Two catalysts were developed during the project. One is based on a LaNiFe perovskite catalyst, which has shown very good activity in tar destruction and methane reforming in a separated fixed bed reactor, but is not resistant to a fluidised bed. The catalytic system NiO/olivine used a new concept to integrated NiO in the olivine structure. It was characterized and tested in dry and steam reforming of methane and presented no deactivation and no coke formation. After these results, it was synthesized in a large amount (135kg). Its activity was confirmed in the fluidised bed (2kg) reactor of UNIVAQ and in the fluidised bed (35kg) reactor of TUV. The results have confirmed its remarkable activity with an increase of H2 concentration of 8% and a decrease of CH4 concentration of 3% in the dry gas mixture. Moreover, tar content is divided by 6 or 7 with regard to the tar content without catalyst, and no additional small particles has been formed by attrition. So, this catalyst meets the requirement of attrition resistance, hydrogen production and tar destruction in the effective operating conditions encountered in biomass gasification.
General the results of this project are:
-A pilot plant with a thermal power of 500kW was build and the first experiments were done. These tests showed, that the circulation rate can be reached easily and that the nitrogen content in the product gas is below 5%.
-At the work on the cold flow model a new scaling parameter was introduced.
-A new catalyst for fluidised beds was developed and tested. This catalyst showed good activity in reduction of tars and increase of hydrogen.
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