BIO-CCHP.net

Two experimental campaigns regarding the investigation of the desulphurisation processes under real gas conditions were performed by BIOENERGY 2020+ in cooperation with SynCraft and TU Graz. The operation temperature for desulphurisation was defined at 350°C, to ensure H2S-concentrations below 0,1 mg/m³ usc (detection limit) in the cleaned gas. The main goal of these first tests has been the monitoring of defined producer gas components before and after the gas cleaning process. 

At the first campaign at the staged air gasifier of SynCraft the following results has been obtained. They show that for all so far evaluated compounds except H2S no significant increase or decrease over the desulphurisation process has been observed. For COS and HCN the fluctuation of concentration is relatively high relating to the measurement value, hence, a reliable conclusion cannot be drawn so far. 

H2S concentrations in the raw producer gas of all test runs at both sites were between 15 and 30 mg/m³ usc., whereas clean gas concentrations had been below detection limit of 0,1 mg/m³ usc.