José de Souza

SISTEMA DE COMPRESIÓN DE BIOGÁS Y BIOMETANO

Resumen Se presenta una investigacion relacionada con un sistema de compresion para biogas a escala piloto, buscando facilitar la utilizacion y comercializacion de este biocombustible. El estudio considera el tratamiento, filtracion y compresion del biogas como tambien su almacenamiento, transporte y la comercializacion. El sistema propuesto esta compuesto por la seccion de filtracion, reduccion de gases no combustibles (como dioxido de carbono) y la seccion de compresion para ser envasado en cilindros. El proceso utiliza el propio biogas como combustible en los motores y equipos. Se establecieron diferentes niveles de presiones para su utilizacion en diversas aplicaciones obteniendo datos sobre compresion, flujo y composicion del biogas. Palabras clave: biogas, biometano, compresion de biogas, filtraje de biogas, biocombustibles Biogas and Biomethane Compression System Abstract This work presents research involving a pilot scale biogas compression system. In an attempt to make it easier to use and commercialize this biofuel, the study looks at its treatment, filtration and compression. The process studied enables storage, transport and sale of biogas. Without a compression system, the use of biogas is restricted to the production site. On the other hand, when biogas is filtered and compressed there are several different applications in homes, industry, automotive vehicles, and other cases. The system is composed of a sector for filtration, reduction of noncombustible gases such as carbon dioxide and a compression sector for filling cylinders. The process uses biogas itself as fuel for motors and equipment. Different levels of pressure were established to use in various applications. In the experiment, data on compression, flow and composition of the biogas were obtained.

Behavior of industrial manufacturing when managed by mult-agent systems

Abstract The requirements of industrial manufacturing indicate a need for reconfiguration and reprogramming process flow, in order to meet changes in the product with the changing market requirements. The sizes of production lots are getting smaller and the variety of products on the same line has increased. These changes imply changes in the manufacturing process, which in many cases means changing the layout, reprogramming the systems, etc. This makes the preparation time of manufacturing devices an important factor in the formation of the final cost. Devices with more autonomy, able to manage themselves and allow a rapid exchange of features are still to be desired in a manufacturing environment, where conventional systems with centralized scheduling, with defined sequence in the central controller and array of features still fall short. But new solutions must be compared in performance with traditional solutions as there are features that traditional systems are performing well, and that are still on the market. Comparing a solution using multi-agent systems and using a solution centric management on a Programmable Logic Controller can clearly define which metric systems have better performance.

Straight Bevel Gears Manufacturing Analysis by Conventional Powder Metallurgy Process

In this paper it was proposed the manufacture of a component of the agricultural sector machine with conventional Powder Metallurgy (PM) techniques. The proposed process was developed with a Straight Bevel Gears, which is currently manufactured by other manufacturing processes, such as machining and forming. The gearwheel is part of a gearbox that replaces speed reduction. The component developed by powder metallurgy is low-carbon iron, in relation to Ni (nickel), Cu (copper) Mo (molybdenum) in large quantities. It was sought to verify the dimensional behavior with Statistical Process Control (SPC) techniques and also its properties through the analysis of the densities obtained in the gears during the powder metallurgy process. It was found that the parts fulfilled the requirements for coupling operation, such as those processed by other processing methods. The mechanical properties checked fully met the minimum requirements for these components. The chemical composition generated for the sprocket also pleased satisfied for this use.

Dimensionamiento de tanques biorreactores mediante simulación computacional

The objective of this work is to optimize and scale a bioreactor. The design and choice of materials are essential aspects to ensure proper operation and performance of the plant for biogas generation. Computational tools can assist in the design and sizing of biogas plants. Computer simulations were performed to determine the minimum plate thickness of the bioreactor considering three types of steels: AISI 318, AISI 316 L y ASTM A36. The simulation of bioreactors for the design and for the choice of materials is done using the software CAE FEMAP NASTRAN 10.0.2. The results show that the optimum material is steel AISI 318 while the steels AISI 316 L y ASTM A36 presented a similar behavior during simulation.

Utilización de Ceniza Volante Aleada al Material Compuesto Hierro-Cobre-Grafito mediante un Proceso de Pulvimetalurgia

The mechanical properties of the alloy which has in its composition Fe-Cu-C and fly ash, obtained by conventional powder metallurgy have been studied and analyzed. Fly ashes were added to balance the origin compound (Fe-Cu-C). The apparent density and the compressibility graph were determined and the samples of the composites with different percentages of ash. Sintering of the three composites generated was performed in a controlled atmosphere with argon at a temperature of 1150 °C. Tests of density, hardness and micrographic analysis after sintering were also performed on the samples. Analyses of the results show that fly ash can be used in balance with Fe-Cu-C at the rate of 4.8%.

MAS and PLC: a comparison on applications of manufacturing systems

Abstract The requirements of industrial manufacturing indicate a need for reconfiguration and reprogramming process flow, in order to meet changes in the product with the changing market requirements. These changes imply changes in the manufacturing process, which in many cases means changing the layout, reprogramming the systems, etc. The sizes of production lots are getting smaller and the variety of products on the same line has increased. This makes the preparation time of manufacturing devices an important factor in the formation of the final cost. Devices with more autonomy, able to manage themselves and allow a rapid exchange of features are still to be desired in a manufacturing environment, where conventional systems with centralized scheduling, with defined sequence in the central controller and array of features still fall short. But new solutions must be compared in performance with traditional solutions as there are features that traditional systems are performing well, and that are still on the market. Comparing a solution using multi-agent systems and using a solution centric management on a Programmable Logic Controller can clearly define which metric systems have better performance.