Pedro Aníbal Beatón

Universidad de Oriente

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José Antonio Suárez

Universidad de Las Palmas de Gran Canaria

José Antonio Suárez Rodríguez

Universidad de Ciencias Médicas de la Habana

Javier Ballester

Universidad de Zaragoza

Rolando Zanzi

KTH Royal Institute of Technology

C.A. Luengo

Universidade Estadual de Campinas (UNICAMP)

Ronoldy Faxas Esaclona

Universidad de Oriente

César Dopazo

Universidad de Zaragoza

Vivian Milanés

Ofelia Pérez Montero

Universidad de Oriente

Felix Fonseca Felfli

Methodist University of Piracicaba

Cooperative Institutions

Universidad de Oriente

Universidade Estadual de Campinas (UNICAMP)

Universidad de Zaragoza

Laboratory of Research in Fluid Dynamics and Combustion Technologies

KTH Royal Institute of Technology

ORCID

Universidad de Ciencias Médicas de la Habana

Hospital Oncológico Docente "Conrado Benítez García"

Ministerio de Ciencia, Tecnología y Medio Ambiente

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REACTORES EN LECHO FLUIDIZADO

Tecnología Química (2009)

Ronoldy Faxas Esaclona José Antonio Suárez Rodríguez Pedro Aníbal Beatón

In the last 10 years, the production of liquid fuel as result of pyrolysis process from forest residues and other industry residues has been development with more strength. The biol-oil or bio-fuel like well know, are alternative substitutes of fossil fuel, finding application in boilers, furnace, diesel engine and gas turbine. Are products with a high value for the market of chemistry and pharmacology industries. The other hand they are easier to handle, to transport and to store than the natural raw material. The products of pyrolysis have high energy and volumety density and their secondary products in relation with the oil, are more environmental accepted because of its limited of nitrogen and sulphur. Different equipment and technology has been design for obtainment of liquid, focus attention in the fluidized bed reactor. This technology present different advantage as well as: simple structure, utilization of different diameter of particle, easy operation, scale and high flows of transfer of hot and mass. The main objective of this paper is explaining the pyrolysis process for liquid production, with interesting attention in the fluidized bed reactor configuration.

Liquid fuel

Pyrolysis oil

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Citations (1)

Autothermal Fluidized Bed Pyrolysis of Cuban Pine Sawdust

Energy Sources Part A Recovery Utilization and Environmental Effects (2006)

José Antonio Suárez Pedro Aníbal Beatón Rolando Zanzi Alejandro Grimm

Oxidative pyrolysis of Cuban pine sawdust was investigated using an autothermal fluidized bed reactor. Biomass particles were fed continuously (8.13 Kg/h) in a bed, fluidized by air gas. Experiments were conduced at three different dimensionless air factors 1, 1.5, and 2 (defined as ratio of actual air flow rate to stoichiometric air flow rate). The various physical and chemical characteristics of the pyrolysis products acquired in these conditions were identified. The results indicated that (1) the operating temperature can be correlated with the air factor; (2) the higher air factor promotes high temperature and contributes to the secondary reactions, which lead to less liquid; (3) the physicochemical characterization of the pyrolysis products indicated that the air factor, in the range studied, does not have a notable influence in their properties; (4) the liquid and char products obtained may be a potentially valuable source of chemical feedstocks.

Sawdust

10.1080/009083190523145

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Citations (10)

PIRÓLISIS AUTOTÉRMICA EN LECHO FLUIDIZADO DE ASERRÍN DE ALGARROBO

Ronoldy Faxas Esaclona José Antonio Suárez Rodríguez Pedro Aníbal Beatón

The oxidative pyrolysis of carob sawdust , like one of the biomass that generate every year in big quantities constitute one of the process of research in develop product of the advantages that bring with it the thermo conversion of this residue in useful product with importance and diversesapplications. The research was realized using a new apparatus of fluidized bed, autothermic, particles of carob sawdust with less diameters of 4 mm were feeded continuously (10 kg/h) influidized bed with air. The experiments were realized with three different air factor (FA): 0,4; 0,6; 0,8 (defined as ratio of actual air flow rate to stoichiometric air flow rate). The results indicate that (1) the carob sawdust can be pyrolysed in fluidized bed conditions where all the experiments liquids, gases and char, (2) the higher air factor promote high temperature and contribute to the secondary reactions, which lead to less liquid (3) the energy balance is very important in order to know the distribution of the energy in the installation during the thermoconversion process, (4) the characterization of the liquid products indicated that the air factor, in the range studied, does not have a notable influence in their properties.

Sawdust

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A Phenomenological Energy Model of Biomass Pyrolysis Under Autothermal Fluidized Bed Conditions

Energy Sources Part A Recovery Utilization and Environmental Effects (2006)

José Antonio Suárez Pedro Aníbal Beatón Rolando Zanzi

In Cuba a variety of types of biomass is being investigated for energy conversion through thermochemical processes into solid, liquid, and gas products. A continuous bench fluidized bed pyrolysis has been designed and is currently under testing. In this article, a transport model has been developed to simulate the axial temperature fields in a bench. The model and experimental results indicated that (1) two zones exist inside of the fluidization column, the dense bed where the exothermic and endothermic reactions are active, and the freeboard zone where the temperature of the pyrolysis product decreases continuously; (2) the bed temperature increases with an increase in the air factor. The predicted temperature is in quantitative agreement with experimental measurements.

Phenomenological model

10.1080/009083190523154

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Citations (7)

Wood briquette torrefaction

Energy Sustainable Development/Energy for sustainable development (2005)

Felix Fonseca Felfli C.A. Luengo José Antonio Suárez Pedro Aníbal Beatón

Torrefaction

Briquette

Heat of combustion

10.1016/s0973-0826(08)60519-0

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Citations (217)

Novel approach for the analysis of heat transfer in bagasse-fired furnaces

A L Brito Pedro Aníbal Beatón Javier Ballester César Dopazo

The heat exchange between the flame and the water walls and bundles of the combustion chamber is considered a complex case of heat transfer, as it takes place in parallel with the combustion process, which constitutes the internal heat source in the radiant medium. Soviet scientists developed the Normative Method for the calculation of total heat exchange in the furnace, based in both empirical and analytical results. This method describes successfully the main thermal indicators of the performance of the combustion chamber and their relationship with the constructive characteristics. However, the Normative Method was developed for coal-fired systems, and its application to biomass-fired (bagasse, in the present work) furnaces is not completely satisfactory. This paper describes the calculations of heat transfer in a combustion chamber, originally designed for combustion on dumper grate and retrofitted for the burning of bagasse in suspension. A new set of indices is proposed for the calculation of the thermal performance of boilers with combustion in suspension. Namely, the thermal-efficiency coefficient the fouling coefficient ({psi}{sub main}), the fouling coefficient ({xi}), the M parameter, the unequal temperature coefficient ({eta}), the adimensional gas temperature ({theta}), are shown to be relevant indices that can markedly improve the accuracy of the results produced by the Normative Method. For example, the error in furnace exit gas temperature has been as low as 0.35%. (author)

Bagasse

Suspension

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Aportes para la gobernanza marino-costera: gestión del riesgo, gobernabilidad y distritos costeros

Fondo de publicaciones Universidad Sergio Arboleda eBooks (2015)

Pedro Aníbal Beatón Darío Candebat Yordan Infante Vivian Milanés Ramón Santonja Alarcón

Aportes para la Gobernanza Marino-Costera suma criterios y perspectivas sobre la forma en que se gestiona el riesgo costero en Colombia y Cuba. Es una fusión de resultados de investigación y divulgación. Los contenidos incluidos parten de dos ediciones del evento Encuentro por el Mar y la Costa y de los resultados del proyecto de investigación La gestión del riesgo como factor de gobernabilidad en ciudades costeras. Presenta entonces la integración entre resultados de investigación y debate academia-sociedad, siendo un perfecto ejemplo de transferencia del conocimiento. La obra permite conocer con detalle y amplitud una investigación con enfoque interdisciplinario. Su legado va más allá del ejercicio científico de un grupo de investigadores, siendo un ejemplo de contribución de la academia a la sociedad civil y a la comunidad científica internacional. Este libro ha sido coordinado por un investigador colombiano y una investigadora cubana, quienes, aprovechando los resultados del proyecto binacional, lograron convocar a algunos de los autores más relevantes en los temas de riesgo costero de sus respectivos países.

10.22518/9789588866673

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Citations (6)

The state and prospects of renewable energy in Cuba

Energy Sources Part B Economics Planning and Policy (2016)

José Antonio Suárez Pedro Aníbal Beatón Ronoldy Faxas C.A. Luengo

ABSTRACTCuba is a nation with a high dependence on imported energy. About 53% of its energy is supplied by imported fuels. On the other hand, its location in the Caribbean Sea offers excellent geographical features for efficient exploitation of renewable energy resources. This article details the state of renewable energy development in Cuba, in terms of its sources, utilization, prospects and energy policy.At present, renewable energy in exploitation reaches around 2.042 million tonnes of oil equivalent, which is about 54.5% of Cuban annual crude oil production in 2009, and a total installed capacity of 400 MW, contributing about 4% of the national electricity generation.The main energy sources are concentrated in biomass (99.3%), followed by hydroelectric energy (0.6%), and in lesser proportions solar energy (photovoltaic and thermal; 0.06%) and wind energy (0.04%).The relevant points of the Renewable Energy Development Plan 2010–2030 include: the implementation of research and development projects on r...

Hydroelectricity

Energy development

Energy subsidies

10.1080/15567249.2015.1007434

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Citations (14)

Energy, environment and development in Cuba

Renewable and Sustainable Energy Reviews (2012)

José Antonio Suárez Pedro Aníbal Beatón Ronoldy Faxas Escalona Ofelia Pérez Montero

Deforestation

10.1016/j.rser.2012.02.023

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Citations (53)

EFFICIENCY ANALYSIS OF A BOILER FOR SUSPENSION BURNING OF SUGAR CANE BAGASSE

Clean Air (2003)

André Luiz Fiquene de Brito Pedro Aníbal Beatón Javier Ballester César Dopazo

The present paper describes the results of the retrofitting of a bagasse-fired boiler (RETO CV-25-18) in the sugar mill "Amancio Rodriguez", located in Las Tunas, Cuba. The boiler was modified in order to implement a suspension-burning configuration. Among other modifications, the distribution of combustion air along the furnace was redesigned in order to obtain a large-scale swirling-flow pattern above the grate. As a result, the new aerodynamic organization of the fuel-air mixture within the furnace was significantly improved. The combustion efficiency of the boiler before and after the retrofitting is analyzed in this paper. The results of the analysis show that the gross efficiency calculated for the modified boiler increased by 1.91%. This difference is due mainly to the decrease of the heat losses by mechanical unburned matter from about 4% before the retrofitting to 1.95% with the new configuration.

Retrofitting

Bagasse

Sugar cane

10.1615/interjenercleanenv.v4.i2.20

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Citations (2)