Bücher von Dennis Forte

Scaling an extrusion process (e.g., from pilot scale to production scale) or transferring a process from one type of extruder to another (of the same or different makes/models), involves an understanding of many process variables. This book takes a complex task, commonly approached largely on an empirical (or "trial and error") basis and shows how scientific and engineering principles can be assembled to design the required outcome - that is, the manufacture of the same product.Following a brief review of extrusion theory, the book discusses methods to quantify both material rheology and the extrusion process. Principles and application of "Dimensional Analysis" techniques are also presented.This is then used as a basis for a planned approach to scale-up and/or process transfer. Analysis and scale-up of extrusion dies are covered as separate topics. Worked examples - taken from actual industrial scale-up experience - are used to demonstrate the methods. The aim is to provide readers with a science-based approach to this topic, which applies to real industrial processes. The limitations inherent in scaling the process are also discussed, along with an outline of how small-scale trials should be planned so that processes are more scalable.

Drying is amongst the most commonly utilised operations in food and feed processing, as well as in other process industries. It is also one of the most energy-intensive, therefore making it a significant operation with respect to both processing cost and carbon footprint.In many instances, if the dryer is producing suitable product, it tends to be ignored. Typically, many industrial drying processes are performing, but notwell. These deficiencies may be with respect to energy efficiency or production efficiency, or with respect to product quality and consistency. If we takethe time to understand our drying processes, we often find significant opportunities for improving productivity.This text draws on the wide industry experience of the two authors, gained over decades across a wide range of products, industries, and dryingtechnologies. Relevant theoretical background is presented, but with a practical focus - describing tools which can be used in industry to understand, analyse, and improve drying processes. It includes worked examples - from the authors' practical experience - to demonstrate how these tools can be applied.

Este libro se desarrolló durante un período de más de veinte años, durante los cuales los autores llevaron a cabo cursos cortos sobre tecnología de extrusión en la industria, primero en Australia y luego a nivel internacional. La nueva segunda edición contiene un capítulo adicional sobre "Desarrollo óptimo de los perfiles de tornillo", así como otras adiciones y mejoras.Al igual que los cursos, este libro tiene como objetivo presentar la teoría detrás de la tecnología de extrusión, pero de una manera que se aplique claramente en la práctica. Comprender la teoría detrás del proceso y cómo se aplica significa que se pueden diseñar formulaciones y procesos para que sean más robustos, se puede seleccionar el equipo apropiado para la tarea requerida y se pueden desarrollar procedimientos y pautas operativos efectivos, lo que conduce a Procesos confiables y producto consistente.Este libro es relevante para todo tipo de alimentos extruidos para humanos y animales, y todo tipo de equipos utilizados para producirlos: extrusoras de uno o dos tornillos y máquinas especializadas para snacks. Considere cómo operan los equipos y los procesos, y cómo las condiciones del proceso interactúan con los ingredientes.