238 resultados para reformado catalítico


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One of the biggest environmental problems of today is the climate change. Experts affirm that this global warming is related to the greenhouse effect. Its causes are directly related to human activity, especially the use of fossil fuels. In this context, companies around the world are challenged to improve energy efficiency in order to reduce the environmental impact and work toward the so-called tripod of sustainable development that focuses on the social, economic and environmental aspects of a business strategy. The first step a company can make in this regard is to conduct an inventory of emissions of greenhouse gases (GHGs). The reduction of GHG emissions in a refinery can be achieved by replacing steam turbines with electric motors to drive big machines, this reduction is achieved by relieving the steam consumption for electric power available or purchased. An important aspect associated with the reduction of GHG emissions is the best performance of the Energy Intensity Index (ERI). The objective of this study was to analyze the feasibility of the blower motorization in the regenerative cycle of a fluidized catalytic cracking unit at a specific refinery. For development work, two methods were used, the initial screening and optimization scenarios with the help of software Butyl. The results indicate that after a certain cost of natural gas this substitution becomes favorable. In addition, there is a large reduction of CO2 emissions avoided by burning fuel

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Tras un proceso que había durado cuatro años, en los días finales de 2009 se publicaron las normas que reforman el marco europeo regulador de las telecomunicaciones. El nuevo marco no introduce grandes novedades respecto al precedente de 2002 que adoptó un enfoque más acorde con las reglas generales de defensa de la competencia, basando la regulación en la definición y análisis de mercados relevantes. Este trabajo analiza estas normas, y de modo general la política sobre telecomunicaciones de la Comisión, y evalúa su eficacia de cara al progreso del mercado único. Mercado único que afronta otros obstáculos: cumplido el plazo de dieciocho meses para la transposición a los respectivos ordenamientos internos de las nuevas Directivas, sólo una minoría de Estados miembros había cumplido con dicha obligación.

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Mode of access: Internet.

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Jiménez Catalán,