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3 results on '"Biomass tar rich synthesis gas application"'

1. Experimental investigations of hydrogen production from CO catalytic conversion of tar rich syngas by biomass gasification.

Author

Chianese, Simeone, Fail, Silvester, Binder, Matthias, Rauch, Reinhard, Hofbauer, Hermann, Molino, Antonio, Blasi, Alessandro, and Musmarra, Dino

Subjects
*HYDROGEN production, *SYNTHESIS gas, *BIOMASS gasification, *COBALT, *WATER gas shift reactions
Abstract

In this paper, the activity of a cobalt/molybdenum (Co/Mo) commercial catalyst for the Water Gas Shift Reaction for hydrogen production was investigated in a three fixed-bed reactor pilot plant using a tar-rich synthesis gas from a full-scale biomass gasification plant as feed-stream. A parametric variation study was carried out to assess CO conversion (X CO ) and selectivity for the water gas shift reaction as a function of the operating temperature (T) in the range 300–450 °C. The effects of four dry gas hourly space velocities (GHSV), Case A-Case D, two steam to dry synthesis gas ratios (H 2 O/SG), 56% v/v and 67% v/v, and a H 2 S concentration in the range 100–220 ppm v,db were investigated: the highest CO conversion (∼95%) was observed in the base case (Case A GHSV) at 67% v/v H 2 O/SG, and 450 °C, the lower the operating temperature the lower the CO concentration, the lower the gas hourly space velocity the higher the CO conversion and the higher the H 2 O/SG the higher the CO conversion. The effect of H 2 S variation on CO conversion was also studied, keeping the operating temperature constant (≈365 °C) and using the Case D GHSV: CO conversion increased as the H 2 S concentration increased and X CO ≈ 40%. Selectivity was not influenced by the parameters investigated. Finally, the effect of the catalyst on tar removal was studied and a CO conversion close to 85% was found. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Hydrogen from the high temperature water gas shift reaction with an industrial Fe/Cr catalyst using biomass gasification tar rich synthesis gas.

Author

Chianese, Simeone, Loipersböck, Jurgen, Malits, Markus, Rauch, Reinhard, Hofbauer, Hermann, Molino, Antonio, and Musmarra, Dino

Subjects
*HYDROGEN, *WATER gas shift reactions, *HIGH temperature chemistry, *IRON catalysts, *BIOMASS gasification, *TAR, *SYNTHESIS gas
Abstract

The high temperature water gas shift reaction (HTS) over an iron/chromium (Fe/Cr) industrial catalyst was investigated in a pilot scale plant consisting of two fixed-bed reactors arranged in series and a biomass-derived tar-rich synthesis gas was used as a feed-stream. CO conversion and selectivity for the water gas shift reaction were evaluated through parameter variation. Four dry gas hourly space velocities (GHSV d ) and two steam to dry synthesis gas ratios (H 2 O/SG d ) equal to 52% v/v and 60% v/v were investigated at temperatures (T) of 350–450 °C. CO conversion was investigated by varying H 2 S concentration 180–540 ppm v (dry basis) at a temperature of 425 °C, considering two GHSV d . The highest CO conversion (~ 83%) was observed in the basis case at 60% v/v H 2 O/SG d , and 450 °C. The catalyst appeared to be resistant to sulfur poisoning deactivation, and achieved 48% CO conversion at the maximum H 2 S concentration used. [ABSTRACT FROM AUTHOR]

Published
2015
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3. Hydrogen from the high temperature water gas shift reaction with an industrial Fe/Cr catalyst using biomass gasification tar rich synthesis gas

Author

Markus Malits, Hermann Hofbauer, Dino Musmarra, Antonio Molino, Reinhard Rauch, Simeone Chianese, Jürgen Loipersböck, Chianese, S., Loipersböck, J., Malits, M., Rauch, R., Hofbauer, H., Molino, A., and Musmarra, Dino

Subjects
Biomass tar rich synthesis gas application, Water gas shift reaction, Hydrogen, Fe/Cr based catalyst, General Chemical Engineering, Dry gas, Analytical chemistry, Energy Engineering and Power Technology, chemistry.chemical_element, Sulfur poisoning deactivation, Hydrogen production, Water-gas shift reaction, Catalysis, chemistry.chemical_compound, Chromium, Fuel Technology, chemistry, Organic chemistry, Syngas, Space velocity
Abstract

The high temperature water gas shift reaction (HTS) over an iron/chromium (Fe/Cr) industrial catalyst was investigated in a pilot scale plant consisting of two fixed-bed reactors arranged in series and a biomass-derived tar-rich synthesis gas was used as a feed-stream. CO conversion and selectivity for the water gas shift reaction were evaluated through parameter variation. Four dry gas hourly space velocities (GHSV d ) and two steam to dry synthesis gas ratios (H 2 O/SG d ) equal to 52% v/v and 60% v/v were investigated at temperatures (T) of 350–450 °C. CO conversion was investigated by varying H 2 S concentration 180–540 ppm v (dry basis) at a temperature of 425 °C, considering two GHSV d . The highest CO conversion (~ 83%) was observed in the basis case at 60% v/v H 2 O/SG d , and 450 °C. The catalyst appeared to be resistant to sulfur poisoning deactivation, and achieved 48% CO conversion at the maximum H 2 S concentration used.

Published
2015

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