Strategies for Producer Gas Cleaning in Biomass Gasification: A Review

Makwana, Haresh V.; Upadhyay, Darshit S.; Barve, Jayesh; Patel, Rajesh N.

doi:10.1007/978-981-10-6107-3_9

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…Tar and Total Particulate Matter (PM) are the major producer gas contaminants [7]. If the concentrations of such contaminants are higher, they create unacceptable maintenance downstream of the system [8].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Syngas Quality in Fixed Bed Gasifier Using CaMg(CO3)2 Catalyst

Upadhyay¹,

Chaudhary²,

Trada³

et al. 2023

Proceedings of the 10th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT 2023)

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This paper deals with the experimental investigation of lignite (L) and wood (W) feedstock in a pilot-scale downdraft gasifier. The study aims to check the compatibility of CaMg(CO3)2 [dolomite (D)] catalyst, 5% (W/W), with lignite and wood (L+D, W+D) feedstock as an additive to enhance the performance of a 10 kWe atmospheric pressure downdraft gasifier system. Fuel consumption and gas flow rate were found to be 10.01-11.6 kg h -1 and 26.76-29.57 kg h -1 , respectively, for lignite and wood feedstock (with and without catalyst). In lignite, CO and H2 concentrations were increased by 6.81 % and 4.9 %, respectively, whereas in wood, their concentrations were increased by 8.88 % and 5.1 % when the catalyst was employed with feedstock. The producer gas LHV and cold gas efficiency were increased by 6.02% and 5.75% in lignite and 6.97% and 6.61 in wood, whereas specific fuel consumption decreased by 5.92% (in L), 5.17 (in W) with dolomite feedstock. Tar and Total Particulate Matter (PM) concentrations in the producer gas were measured and found to have a noticeable decline with catalytic gasification for both feedstocks. The study concludes that adding dolomite offered better results in terms of higher efficiency and lower tar-PM concentrations.

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Section: Introductionmentioning

confidence: 99%

Improvement of Syngas Quality in Fixed Bed Gasifier Using CaMg(CO3)2 Catalyst

Upadhyay¹,

Chaudhary²,

Trada³

et al. 2023

Proceedings of the 10th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT 2023)

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“…Raw biosyngas usually contains tar compounds and other impurities such as ammonia, hydrogen sulfide and chloride, ash, and solid particles . The treatment processes for removing these impurities are well developed and reviewed previously, , which thus is not the main topic in the present study. The relative concentrations of the main gaseous components in the biosyngas depends strongly on the chosen gasification agent, the type of biomass, and the process parameters used. ,− This gas mixture needs to be converted into syngas (CO + H 2 ) via the conditioning processes prior to being fed into the reaction pathway to produce hydrogen, fuel, and chemicals in the downstream.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Water-Added Thermal Processing of Model Biosyngas for Improving Hydrogen Production and Restraining Soot Formation

Chytil

Lee

Lødeng

et al. 2022

Ind. Eng. Chem. Res.

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The upgrading of biosyngas to convert methane into syngas is a necessary step for hydrogen production from biomass. However, this process is highly energy-demanding. In this study, a model biosyngas containing H 2 , CH 4 , CO, and CO 2 were thermally treated between 1200 and 1500 °C. The gas mixture, comprised of H 2 (33 vol %), CH 4 (12 vol %), CO (28 vol %), CO 2 (25 vol %), and He (2 vol %), was diluted with argon and the effect of reaction temperature (1200−1500 °C), water addition (0−44.3 mol %), and residence time (23, 46, and 76 μs in corresponding to flow rates of 1500, 2500, and 5000 mL/min at normal temperature and pressure, respectively) were studied. A possible reaction scheme for the upgrading of the model gas is proposed based on the kinetic simulation with CHEMKIN. The main reaction pathways involve dry reforming of methane and reverse water-gas shift (WGS) reactions. The kinetic simulation explained the finding that CO production was negatively influenced by the water content via the WGS reaction. The main side reaction is the methane pyrolysis reaction which causes the formation of carbon. The carbon formed in the reforming was characterized by SEM and Raman spectroscopy. SiO 2 needle-like microdomains are observed at the top of the reactor heating zone, while the central part of the heating zone was covered by carbon with a disordered, amorphous, low-density soot structure. It is proposed that the SiO 2 species formed by the chemical reaction between the reactor wall material and the reactants act as a support to anchor the carbon formed.

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“…Fuel flexibility is the major advantage of the gasifier and any carbonaceous fuel can be used as a feedstock in the gasification system. This century-old technology has gained prominence during World War II and after that, it reduced the growth rate due to the viability of the cheaper crude oil (Makwana, Upadhyay, & Barve, 2018).…”

Section: Introductionmentioning

confidence: 99%

Elemental and Heat Loss Analysis of Different Feedstock in Downdraft Gasifier

a¹,

Chaturvedia²,

a³

et al. 2019

JEES

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Gasification is a technique in which biomass is converted into low/medium heating value producer gas which is rich in H 2 and CO. The present work deals with the thermodynamic and heat transfer analysis of the downdraft gasification system with different feedstock.These analyses are very important to understand the utilization of the feedstock in the gasifier reactor. In this work, mass balance, element balance, energy balance, and heat transfer analysis were carried out for the gasification process. For the analysis purpose, five different feedstock such as lignite, cumin briquette + sawdust briquette (40:60, w/ w), sawdust briquette, wood, and lignite + wood (50:50, w/w) were used in 10 kWe atmospheric pressure downdraft gasifier system. Mass Balance Closure (MBC), Energy Balance Closure (ENBC), and Element Balance Closure (EBC) were found in the range of 0.95-1.03, 0.93-0.97 and 0.84-1.09, respectively. The infrared thermal imager was used to measure the surface temperature of the gasifier reactor which results were used to calculate convective and radiative heat lossesfrom the gasifier reactor.The convective and radiative heat losses were found in the range of 0.511 kW to 0.802 kW and 0.255 kW to 0.431 kW, respectively for the selected feedstock.

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Strategies for Producer Gas Cleaning in Biomass Gasification: A Review

Cited by 6 publications

References 41 publications

Improvement of Syngas Quality in Fixed Bed Gasifier Using CaMg(CO3)2 Catalyst

Improvement of Syngas Quality in Fixed Bed Gasifier Using CaMg(CO3)2 Catalyst

Experimental and Theoretical Studies on Water-Added Thermal Processing of Model Biosyngas for Improving Hydrogen Production and Restraining Soot Formation

Elemental and Heat Loss Analysis of Different Feedstock in Downdraft Gasifier

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