Removal of sulphur-containing odorants from fuel gases for fuel cell-based combined heat and power applications

Dimethyl sulfide adsorption from natural gas for solid oxide fuel cell applications

“…In some cases, the presence of sulfur compounds causes immediate performance deterioration; more often, a long-term performance degradation occurs, over a long exposition period, due to a continuous deposition on the anode catalyst surface [5]. Therefore, to prevent detrimental effects on SOFC catalysts, sulfur concentration has to be reduced to 1 ppmv [6] or lower [7,8].…”

“…Moreover, many desulphurization techniques need complex integration into the plant and therefore they are not suitable for micro-CHP applications [1]. In this case, in fact, the desired requirements for a filtering solution are: high efficiency, reliability, system simplicity, low costs and easy maintenance [8]. Chemical scrubbers present drawbacks related to outlet sulfur concentration higher than fuel cell tolerance limits and system complexity [11,12].…”

“…On the contrary, adsorption technology on porous materials can be performed using simple systems also operating at room conditions [1,8]. Moreover, it can guarantee sub-ppm level of outlet sulfur concentration, with 100% efficiency [11], representing an attractive option for desulfurization finalized to micro-CHP fuel cell applications.…”

The effect of metal ions in MNaY-zeolites for the adsorptive removal of tetrahydrothiophene

“…Among various desulfurization methods, the adsorptive removal of sulfur species from fuels has been widely investigated because this can be more effective for the small-scale process compared with the conventional hydrodesulfurization (HDS) [3,4]. The former system can be operated at low temperatures and pressures without additional hydrogen supply [5,6].…”

“…Among organic sulfur compounds, comparatively fewer works have been reported on the adsorptive removal of THT compared with those on TBM or DMS [6,11,[13][14][15][22][23][24][25][26][27][28][29]. Furthermore, no relevant work has been conducted on the interaction between THT and the adsorption sites in metal-ion-exchanged Y zeolites.…”