Test of a hydrodesulfurization catalyst in a biomass tar removal process with catalytic steam reforming

Kinetic modeling of a combined tar removal and methanation reactor for biogenous synthesis gas at medium temperature conditions

“…To show the influence of catalyst deactivation long-term tests of 250 h have been performed. A more detailed description of the experimental setup of gasification, gas cleaning and analytic equipment can be found in [15] and [16].…”

“…5), the integrals can be calculated with the medium temperature T m . The equivalent bed length L 2 until methanation equilibrium is reached after t end of gas exposure is determined by using (13)- (15). Table 5 compares the experimental and the modeled tar conversion rates for the two tar pseudocomponents Tarlump 2 and Tarlump 4 & 5.…”

Investigation of sulfidation and regeneration of a ZnO-adsorbent used in a biomass tar removal process based on catalytic steam reforming

“…As previously described in other publications [6,7], the reduction of the concentration of tar components is the most challenging task for the usage of the synthesis gas downstream the gasifier. In the process discussed in this paper, tar components are converted to the synthesis gas components H 2 and CO by catalytic steam-reforming with a commercial Nickel-catalyst.…”

“…In the first mechanism, shown in Eqs. (7) and (8), water and oxygen are necessary to regenerate the sulfided zinc. In Eq.…”

“…The lower the desulfurizationtemperature, the lower the achievable equilibrium-concentration of H 2 S is. At 300°C a H 2 S-concentration below 1 ppm V is possible [7,11].…”