Examinando por Autor "Durán-Pinzón, Jessica Marlen"
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- PublicaciónAcceso abiertoEstimation of potential hydrogen production from palm kernel shell in Norte de Santander, Colombia(Journal of Physics: Conference Series, 2019-11) Acevedo-Páez, Juan Camilo; Solano, S P; Durán-Pinzón, Jessica Marlen; Posso Rivera, Fausto René; Arenas, E.This work sought to estimate the economic and environmental potential of palm kernel shell for hydrogen production as energy vector in Norte de Santander, Colombia. A field research determined that the department generates monthly 14082 t of palm biomass of which 12501 of palm kernel shell remain available for their use. The proximate and ultimate analyses of the palm kernel shell report high heating value (19.53 MJ/kg) compared with other agro-industrial biomasses, high content of volatile material (69.82% w/w) and fixed carbon (21.68% w/w), promoters of chemical reactions in pyrolysis and gasification processes, respectively. In the Aspen Plus® simulation process of the palm kernel shell gasification at 900 °C and steam/biomass ratio of 1.5, a yield is obtained of hydrogen production of 40.7%, equivalent to a monthly production in Norte de Santander of 51.6 t. Using H2 in the generation of electric power permits producing 470.9 MWh/month that represent theoretical utilities of US$27734.5. In another scenario, 55848.8 gal/month of gasoline are substituted, equivalent to US$11708.6 through the sale of carbon credits. Regarding diesel, 45905.1 gal are replaced per month, which add US$9725.4 through the commercial transaction in the carbon market. It is concluded that using palm kernel shell as primary source to obtain H2, has, in principle, a favorable economic and environmental impact for sustainable development of the department of Norte de Santander, besides contributing to the knowledge base on the penetration of this vector in Colombia's energy matrix; however, more detailed technical and economic studies are needed to conclude regarding the economic viability of this energy conversion process.
- PublicaciónAcceso abiertoHydrogen production from palm kernel shell(ELSEVIER, 2019-11-19) Acevedo-Páez, Juan Camilo; Durán-Pinzón, Jessica Marlen; Posso Rivera, Fausto René; Arenas, Erika; EurekaThe hydrogen production process from palm kernel shell (PKS) is modeled and simulated by a steady-state gasification system using Aspen PLUS®. The kinetic parameters of the gasification are determined by employing thermogravimetric analysis (TG/DTG) using two gasifying agents (CO2 and steam) and applying three semi-empirical kinetic models to interpret the experimental results (linear model, grain model, and volumetric model). The process was subjected to different temperatures (750–950 °C) and different compositions of the steam/biomass ratio (S/B) (0–2.5). It is obtained that the linear model and the grain model have the best R2 with the gasification results of the PKS with steam (0.966) and CO2 (0.965), respectively. The steam reaction kinetic parameters obtained were and and for the reaction with CO2, they were and. The production yield of H2 (109 g H2/PKS kg) is reached at the highest temperature (950 °C) and the lowest S/B ratio (0). It is concluded that the model can predict with greater precision the hydrogen composition in the syngas, with a 0.135 mean square error, compared to other authors that present a 0.282 mean square error.
- PublicaciónAcceso abiertoImplementation of safety management systems and health at work (case study in a telecommunications company)(2018) Durán-Pinzón, Jessica Marlen; Miranda, J.D.; Patiño, P.M.Colombian legislation requires all companies to develop a health and safety at work program in order to preserve, maintain and improve the individual and collective health of workers and avoid work accidents and occupational diseases. The design of a management system focused on safety and health at work that provides safety, care and education to employees must involve audit-based evaluation activities. This leads to programs that reduce work accidents and prevent occupational diseases, and that also optimize the productivity of the company. The process must involve the development of criteria for analyzing the tasks or functions of each person. It is vital to anticipate dangerous or harmful events or incidents, to identify potentially dangerous tasks, and prioritize and apply corrective action. The goal of this paper is to demonstrate a methodology based on ohsas 18001 for the implementation of a management system at a telecommunications company. In the methodological scope, sufficient and necessary information will be gathered to detect the shortcomings of the administrative and management areas that support the proposal on the alternative design. It describes the situation observed and analyse the documents that will support the proposal to carry it out in accordance with the established norms.
- PublicaciónRestringidoPasantía: Estudios de la aplicabilidad de los métodos de diseño y la distribución en plantas en las Organizaciones.(Cúcuta, Universidad de Santander, 2020, 2020-06-05) Montañez Camargo, Camilo Andrés; Bermúdez Carrillo, Juan-Carlos; Durán-Pinzón, Jessica Marlen“La distribución en planta se define como la ordenación física de los elementos que constituyen una instalación, sea industrial o de servicios. Esta ordenación comprende los espacios necesarios para los movimientos, el almacenamiento, los colaboradores directos o indirectos y todas las actividades que tengan lugar en dicha instalación.” (Palacios Aceros, 2016). La distribución es un concepto de gran importancia para las empresas, ya que puede ayudar a la reducción de costos operacionales a la vez que incrementa la productividad. Este concepto se relaciona con la distribución de la maquinaria, los puestos de trabajo, los lugares de almacenamiento, los departamentos, los pasillos, las salidas y en general de todos los sectores dentro de una instalación productiva; con la finalidad de organizar estos elementos de manera que haya un buen flujo del trabajo y de los materiales, a través del sistema productivo. Es por esto que la presente monografía busca exponer los conceptos la metodología de diseñar una distribución de planta, métodos de distribución y análisis del impacto de su implantación en cuatro estudios previos hechos por estudiantes universitarios. Estos temas fueron divididos a lo largo de tres capítulos. El primer capítulo detalla la aplicabilidad de los métodos de diseño y la distribución en plantas en las organizaciones, mostrando un poco de su historia, sus principios, las maneras para determinar los espacios que van a ocupar cada cosa, los ocho factores que afectan su planeación y los tipos de distribución más conocidos. El segundo capítulo hace una observación de los cuatro métodos que se usan para ubicar, diseñar y distribuir una planta, realizando un análisis de cada una mediante matrices DOFA. En el tercer capítulo se elabora un análisis del impacto de las propuestas de distribución en planta en cuatro estudios previos, hechos por estudiantes universitarios.
- PublicaciónAcceso abiertoSimulation of the gasification process of palm kernel shell using Aspen PLUS(2018) Acevedo-Páez, Juan Camilo; Posso Rivera, Fausto René; Durán-Pinzón, Jessica Marlen; Arenas, E.This research sought to simulate gasification of palm kernel shell (PKS) in stationary state by using Aspen PLUS®. The model can predict the syngas composition with 1.6% absolute error. Biomass is defined as a non-conventional component from its proximate and ultimate analyses. The gasification process was divided into four stages: drying, pyrolysis, oxidation, and reduction, simulated in two R-Yield and R-Equil reactors, specified through the physicochemical characterization of the PKS and the chemical reactions in equilibrium intervening in the gasification. Simulation results were validated with experimental results from other investigations with similar operating conditions. Production of H2 and CO2 increases by increasing temperature from 700 to 900°𝐶, contrary to what occurs with CO that diminishes at higher temperatures. The steam/biomass (S/B) ratio has a significant effect on the proportion of H2 in the syngas, given that it diminishes significantly by 20.3% upon increasing the S/B ratio from 1.5 to 2.5, showing the same trend for the CO and CO2 gases.