Cogasification of Coal and Biomass: A Review

Brar, Jagpinder Singh; Singh, Kaushlendra; Wang, J.; Kumar, Subodh

doi:10.1155/2012/363058

Cited by 79 publications

(56 citation statements)

References 41 publications

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“…Considerou-se na simulação um gaseificador de leito fluidizado pois é um dos reatores mais utilizados na indústria em processos de CM e biomassa segundo (BRAR et al, 2012). As especificações do gaseificador foram baseadas em um modelo comercial leito fluidizado modelo High Temperature Winkler (HTW™) do fabricante ThyssenKrupp, que opera com 1,6 a 30 t/h de combustível, produzindo de 3000 a 34000 Nm³/dia de gás (MELO, 2016), no caso de CM.…”

Section: Congresso Brasileiro De Engenharia Química Em Iniciação unclassified

Estudo Paramétrico Da Cogaseificação De Carvão Mineral E Casca De Arroz Para a Produção De Syngas Enriquecido Em Hidrogênio

Peters¹,

Zottis²,

Muniz³

et al. 2017

Blucher Chemical Engineering Proceedings

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RESUMO -A cogaseificação é considerada uma alternativa sustentável, que possibilita a conversão termoquímica de materiais carbonosos, gerando o syngas. Este gás de síntese pode ser empregado na cogeração de energia e em processos industriais como, a produção de hidrogênio e a sínteses de produtos químicos. Neste trabalho simulou-se no software UniSim ® Design a cogaseificação de carvão mineral (CM) e casca de arroz (CA) afim de obter syngas para a produção de um syngas enriquecido em hidrogênio. Foram avaliados os seguintes parâmetros: razão de alimentação de carvão mineral e casca de arroz; e a razão entre os combustíveis da mistura e os agentes de gaseificação. Verificou-se que o aumento do teor de CA no combustível, acarreta uma baixa produção de H2 do syngas. Observou-se que a temperatura, relação Ar/Combustível e relação S/F são parâmetros de forte influência na composição do syngas. Conclui-se que a alimentação de 77% de CM e 23 % de CA produz altos teores de H2 (19 a 28 %) e baixos teores de CO (4 a 8,5 %), condição mais promissora para a operação do gaseificador.

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Section: Congresso Brasileiro De Engenharia Química Em Iniciação unclassified

Estudo Paramétrico Da Cogaseificação De Carvão Mineral E Casca De Arroz Para a Produção De Syngas Enriquecido Em Hidrogênio

Peters¹,

Zottis²,

Muniz³

et al. 2017

Blucher Chemical Engineering Proceedings

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“…In the specific case of co-gasification processes, water, CO2 and oxygen are introduced to carry out all the gasification reactions [9,35]. Therefore, in 4-end mode, flue gases from the boiler or gasification unit ( Figure 3) could be used as sweep to achieve a high OTM integration degree in the co-gasification process.…”

Section: Integration Of Otm Modules In Gasification Processesmentioning

confidence: 99%

Oxygen transport membranes in a biomass/coal combined strategy for reducing CO 2 emissions: Permeation study of selected membranes under different CO 2 -rich atmospheres

et al. 2015

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ElsevierGarcía Fayos, J.; Vert Belenguer, VB.; Balaguer Ramirez, M.; Solis Díaz, C.; Gaudillere, CC.; Serra Alfaro, JM. (2015). Oxygen transport membranes in a biomass/coal combined strategy for reducing CO2 emissions: Permeation study of selected membranes under different CO2-rich atmospheres. Catalysis Today. 257 (2) AbstractThis contribution introduces how the integration of biomass as fuel in power plants would balance CO2 emissions and the related role of oxygen transport membranes (OTM) on it. CO2 capture techniques could be introduced to minimize CO2 emissions at the cost of a substantial energy penalty in the overall process. Among the different approaches, the use of pure O2and/or N2-free oxidation gases for combustion and/or for gasification leads to promising energy efficiencies. Ceramic OTM membranes could be successfully integrated in such thermal processes, which enable to increase the net plant efficiency when CO2 capture is implemented.Further, this work reviews how selected ceramic materials and membrane architectures behave under CO2 containing atmospheres at high temperatures above 700 ºC. These conditions have been selected for checking the viability of these compositions and configurations to fit in an oxy-co-gasification process, involving coal and biomass. The tested asymmetric membranes present promising oxygen fluxes in the range 0.6-1.2 ml·min -1 ·cm -2 when using 100% CO2 as sweep gas at 850 ºC (optimal membrane operation conditions in oxyfuel power plant) and stable oxygen production up to 100 hours of continuous operation in similar conditions. Specifically, La0.6Sr0.4Co0.2Fe0.8O3-δ and NiFe2O4 -Ce0.8Tb0.2O2-δ composite materials showed the best results for oxygen permeation and time stability under CO2-rich atmospheres.

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“…Zhou (2014) presented a review of synergy effects during co-gasification in several experimental studies. Brar et al (2012) and Emami-Taba et al (2013) presented a comprehensive review of recent progress in coal-biomass co-gasification technologies. Different types of chemical reactors are used in co-gasification such as entrained-flow, fixed-bed and fluidized-bed gasifiers.…”

Section: Introductionmentioning

confidence: 99%

“…According to Emami-Taba et al (2013), fluidized-bed gasifiers are the most used ones. Brar et al (2012) pointed out that the operating temperature of gasifiers ranges from 850 to 1000 ºC, with a maximum temperature limit established to avoid ash sintering. The authors also observed that gasifiers operate from atmospheric pressure up to 20 bar.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Biomass and Coal Co-Gasification of Brazilian Feedstock Using a Chemical Equilibrium Model

Rodrigues

Muniz

Marcílio

2016

Braz. J. Chem. Eng.

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-Coal and biomass are energy sources with great potential for use in Brazil. Coal-biomass cogasification enables the combination of the positive characteristics of each fuel, besides leading to a cleaner use of coal. The present study evaluates the potential of co-gasification of binary coal-biomass blends using sources widely available in Brazil. This analysis employs computational simulations using a reliable thermodynamic equilibrium model. Favorable operational conditions at high temperatures are determined in order to obtain gaseous products suitable for energy cogeneration and chemical synthesis. This study shows that blends with biomass ratios of 5% and equivalence ratios ≤ 0.3 lead to high cold gas efficiencies. Suitable gaseous products for chemical synthesis were identified at biomass ratios ≤ 35% and moisture contents ≥ 40%. Formation of undesirable nitrogen and sulfur compounds was also analyzed.

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Cogasification of Coal and Biomass: A Review

Cited by 79 publications

References 41 publications

Estudo Paramétrico Da Cogaseificação De Carvão Mineral E Casca De Arroz Para a Produção De Syngas Enriquecido Em Hidrogênio

Estudo Paramétrico Da Cogaseificação De Carvão Mineral E Casca De Arroz Para a Produção De Syngas Enriquecido Em Hidrogênio

Oxygen transport membranes in a biomass/coal combined strategy for reducing CO 2 emissions: Permeation study of selected membranes under different CO 2 -rich atmospheres

Evaluation of Biomass and Coal Co-Gasification of Brazilian Feedstock Using a Chemical Equilibrium Model

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