This volume comprises the papers presented at the Second International Symposium on Gas Cleaning at High Temperatures, held at the University of Surrey, Guildford, UK on 27-29 September, 1993. The Symposium was organised by the Department of Chemical and Process Engineering and the Centre for Environmental Strategy of the University of Surrey, and co-sponsored by The Institution of Chemical Engineers, The Filtration Society and the Royal Society of Chemistry. Co-chairmen R. Clift Centre for Environmental Strategy, University of Surrey J. P. K. Seville Department of Chemical and Process Engineering, University of Surrey Secretary Centre for Environmental Strategy, University of Surrey J. Libaert Scientific Committee British Coal Research Establishment, Cheltenham, UK P. Cahill Shell International, The Hague, Netherlands W. A. Dries University of Karlsruhe, Germany P. Gang Van Tongeren International, Godalming, UK R. R. Greenfield Blue Circle Technical Centre, Greenhithe, UK C. P. Kerton Powergen, Solihull, UK W. S. Kyte Separation Processes Service, Harwell, UK K. Morris Pall Process Filtration, Portsmouth, UK N. Moss Pilkington, Ormskirk, UK G. A. Rimmer Lodge Sturtevant, Birmingham, UK A. Russell-Jones J. Strickland Davy McKee, Stockton-an-Tees, UK Glosfume Environmental Controls, Ashleworth, UK C. J. Withers Financial sponsors Shell International Inc.

The aim of this book is to link demand and supply of environmental information in the field of Life Cycle Management. The book is based on the results of the CHAINET concerted action financed by EU-DGXII for the work period 1998-2000, and is intended to build bridges between the different scientific communities in the field of Life Cycle Management. A structured approach is followed, meaning that both demand and supply of environmental information are characterised, after which the two are linked.
Chapter 2 deals with the demand side; a number of characteristics are identified including the object of analysis, different question types, consecutive decision steps, and the cultural context of the decision at hand. Chapter 3 gives an overview of the supply side, distinguishing between concepts, analytical tools, procedural tools, technical elements, and data. The focus of the book is on analytical tools. In Chapter 4 and in a 34-page annex, eleven analytical tools are systematically described, including LCA, MIPS, ERA, MFA, SFA, CERA, IOA, analytical tools for ecodesign, LCC, TCA, and CBA.
In Chapter 5, demand and supply are linked, starting from the question types and indicating which types of tools are particularly suited for which type of question. For instance, it is shown that LCA is particularly useful for operational questions, but less so for more strategic questions. Other aspects concern the distinction between a broad overview and a detailed analysis, and, interestingly, the cultural context of the decision. It appears that without agreement on the criteria to be used, quantitative analytical tools such as LCA, ERA, or CBA may not be very helpful as support for decision-making. Rather more robust quantitative, or even qualitative, tools may then be used instead.
Chapter 6 makes a number of concluding remarks. A plea is made for the combined use of tools, rather than the development of a super tool. Another important topic concerns the customisation of tools, which is seen as quite useful if combined with a periodic validation against a more detailed analysis.
In the text of the preceding chapters, 26 text boxes are included as practical illustrations of the principles described in the text. In the following chapters, three cases are presented, dealing with electronic goods, the car, and clothes washing. These cases show how, in practice, different tools are used in combination, as a support for a given decision situation.
The book is particularly suited for courses in higher education, both for universities and polytechnics, and for use by consultancy firms, by larger companies, and industrial branch organisations.

Over half of the products of the chemical and process industries are sold in a particulate form. The range of such products is vast: from agrochemicals to pigments, from detergents to foods, from plastics to pharmaceuticals. However, surveys of the performance of processes designed to produce particulate products have consistently shown inadequate design and poor reliability. Particle technology' is a new subject facing new challenges. Chemical and process engineering is becoming less concerned with the design of plants to produce generic simple chemicals (which are often single phase fluids) and is now more concerned with speciality effect' chemicals which may often be in particulate form. Chemical and process engineers are also being recruited in increasing numbers into areas outside their tranditional fields, such as the food industry, pharmaceuticals and the manufacture of a wide variety of consumer products. This book has been written to meet their needs. It provides comprehensive coverage of the technology of particulate solids, in a form which is both accessible and concise enough to be useful to engineering and science students in the final year of an undergraduate degree, and at Master's level. Although it was written with students of chemical engineering in mind, it will also be of use and interest to students of other disciplines. It comprises an account of the fundamentals of teh subject, illustrated by worked examples, and followed by a wide range of selected applications.

Vast tonnages of solid-liquid mixtures are pumped every year in dredging operations, mining and waste-disposal applications. Most of these systems are centrifugal pumps, and the resolution of problems encountered in slurry pumping requires both detailed scientific knowledge and judgment derived from practical experience.

For many years the combination of up-to-date analysis and hands-on experimentation has been provided to interested engineers in a short course based at the GIW Hydraulic Laboratory. The lecturers in this course, who represent a broad background of international expertise, have prepared this widely-recognized text, Slurry Transport Using Centrifugal Pumps, Third Edition.

This unique text is logically divided into two sections: the first part of the book concentrates on the behaviors of various sorts of slurry flow, and the second part deals with the behavior of centrifugal pumps handling slurries, and with how pumps and pipelines interact as a system.

Slurry Transport Using Centrifugal Pumps, Third Edition also includes:

• New material on both non-Newtonian flows and slurries of granular particles.
• New information on pump wear, solids effect, and system operation.
• Updated and completely new material on pump selection and environmental aspects
• Worked examples and case studies that stress practical applications

Slurry Transport Using Centrifugal Pumps, Third Edition, will be of interest to all engineers and technologists involved in the large-scale transportation of slurries.

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The aim of this book is to link demand and supply of environmental information in the field of Life Cycle Management. The book is based on the results of the CHAINET concerted action financed by EU-DGXII for the work period 1998-2000, and is intended to build bridges between the different scientific communities in the field of Life Cycle Management. A structured approach is followed, meaning that both demand and supply of environmental information are characterised, after which the two are linked.
Chapter 2 deals with the demand side; a number of characteristics are identified including the object of analysis, different question types, consecutive decision steps, and the cultural context of the decision at hand. Chapter 3 gives an overview of the supply side, distinguishing between concepts, analytical tools, procedural tools, technical elements, and data. The focus of the book is on analytical tools. In Chapter 4 and in a 34-page annex, eleven analytical tools are systematically described, including LCA, MIPS, ERA, MFA, SFA, CERA, IOA, analytical tools for ecodesign, LCC, TCA, and CBA.
In Chapter 5, demand and supply are linked, starting from the question types and indicating which types of tools are particularly suited for which type of question. For instance, it is shown that LCA is particularly useful for operational questions, but less so for more strategic questions. Other aspects concern the distinction between a broad overview and a detailed analysis, and, interestingly, the cultural context of the decision. It appears that without agreement on the criteria to be used, quantitative analytical tools such as LCA, ERA, or CBA may not be very helpful as support for decision-making. Rather more robust quantitative, or even qualitative, tools may then be used instead.
Chapter 6 makes a number of concluding remarks. A plea is made for the combined use of tools, rather than the development of a super tool. Another important topic concerns the customisation of tools, which is seen as quite useful if combined with a periodic validation against a more detailed analysis.
In the text of the preceding chapters, 26 text boxes are included as practical illustrations of the principles described in the text. In the following chapters, three cases are presented, dealing with electronic goods, the car, and clothes washing. These cases show how, in practice, different tools are used in combination, as a support for a given decision situation.
The book is particularly suited for courses in higher education, both for universities and polytechnics, and for use by consultancy firms, by larger companies, and industrial branch organisations.

Over half of the products of the chemical and process industries are sold in a particulate form. The range of such products is vast: from agrochemicals to pigments, from detergents to foods, from plastics to pharmaceuticals. However, surveys of the performance of processes designed to produce particulate products have consistently shown inadequate design and poor reliability. Particle technology' is a new subject facing new challenges. Chemical and process engineering is becoming less concerned with the design of plants to produce generic simple chemicals (which are often single phase fluids) and is now more concerned with speciality effect' chemicals which may often be in particulate form. Chemical and process engineers are also being recruited in increasing numbers into areas outside their tranditional fields, such as the food industry, pharmaceuticals and the manufacture of a wide variety of consumer products. This book has been written to meet their needs. It provides comprehensive coverage of the technology of particulate solids, in a form which is both accessible and concise enough to be useful to engineering and science students in the final year of an undergraduate degree, and at Master's level. Although it was written with students of chemical engineering in mind, it will also be of use and interest to students of other disciplines. It comprises an account of the fundamentals of teh subject, illustrated by worked examples, and followed by a wide range of selected applications.

In recent years, interest in the technology of gas cleaning at high temperatures has grown, driven in part by environmental legislation but also by demands for increases in process efficiency and intensity - notably for power generation and waste incineration. Some techniques for high temperature gas cleaning have now reached practical exploitation, and industrial applications are described by some of the contributors to this volume. This book should be of interest to all in the process industries and in the associated research community who are concerned with collecting particulates and gaseous components at temperatures above 200 degrees centigrade. Many of the major industrial trials of hot gas cleaning techniques since 1986, in both North America and Europe, are included. In particular, authors from both academic and industrial sectors consider: developments in processes and devices to remove particles from hot gas streams; measurement and analysis of particulate and gaseous components; combined processes for the removal of vapours and acid gases using "dry scrubbing" and related techniques; and applications in the process industries and in advanced power generation. This book should be of interest to chemical and process engineers in the industrial and academic sectors.