energy efficiency in the cement industry

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Energy Efficiency In The Cement Industry

Author : J. Sirchis
ISBN : 9781482290400
Genre : Architecture
File Size : 23. 87 MB
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Proceedings of a seminar organized by the CEC, Directorate-General for Energy and CIMPOR Cimentos de Portugal E.P. with the co-operation of Cembureau European Cement Association, held in Oporto, Portugal, 6-7 November 1989.

Analysis Of Energy Efficiency Opportunities For The Cement Industry In Shandong Province China

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ISBN : OCLC:727246751
Genre :
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China's cement industry, which produced 1,388 million metric tons (Mt) of cement in 2008, accounts for almost half of the world's total cement production. Nearly 40% of China's cement production is from relatively obsolete vertical shaft kiln (VSK) cement plants, with the remainder from more modern rotary kiln cement plants, including plants equipped with new suspension pre-heater and pre-calciner (NSP) kilns. Shandong Province is the largest cement-producing Province in China, producing 10% of China's total cement output in 2008. This report documents an analysis of the potential to improve the energy efficiency of NSP kiln cement plants in Shandong Province. Sixteen NSP kiln cement plants were surveyed regarding their cement production, energy consumption, and current adoption of 34 energy-efficient technologies and measures. Plant energy use was compared to both domestic (Chinese) and international best practice using the Benchmarking and Energy Saving Tool for Cement (BEST-Cement). This benchmarking exercise indicated an average technical potential primary energy savings of 12% would be possible if the surveyed plants operated at domestic best practice levels in terms of energy use per ton of cement produced. Average technical potential primary energy savings of 23% would be realized if the plants operated at international best practice levels. Energy conservation supply curves for both fuel and electricity savings were then constructed for the 16 surveyed plants. Using the bottom-up electricity conservation supply curve model, the cost-effective electricity efficiency potential for the studied cement plants in 2008 is estimated to be 373 gigawatt hours (GWh), which accounts for 16% of total electricity use in the 16 surveyed cement plants in 2008. Total technical electricity-saving potential is 915 GWh, which accounts for 40% of total electricity use in the studied plants in 2008. The fuel conservation supply curve model shows the total technical fuel efficiency potential equal to 7,949 terajoules (TJ), accounting for 8% of total fuel used in the studied cement plants in 2008. All the fuel efficiency potential is shown to be cost effective. Carbon dioxide (CO2) emission reduction potential associated with cost-effective electricity saving is 383 kiloton (kt) CO2, while total technical potential for CO2 emission reduction from electricity-saving is 940 ktCO2. The CO2 emission reduction potentials associated with fuel-saving potentials is 950 ktCO2.

Energy Efficiency Improvement Opportunities For The Cement Industry

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ISBN : OCLC:727352746
Genre :
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This report provides information on the energy savings, costs, and carbon dioxide emissions reductions associated with implementation of a number of technologies and measures applicable to the cement industry. The technologies and measures include both state-of-the-art measures that are currently in use in cement enterprises worldwide as well as advanced measures that are either only in limited use or are near commercialization. This report focuses mainly on retrofit measures using commercially available technologies, but many of these technologies are applicable for new plants as well. Where possible, for each technology or measure, costs and energy savings per tonne of cement produced are estimated and then carbon dioxide emissions reductions are calculated based on the fuels used at the process step to which the technology or measure is applied. The analysis of cement kiln energy-efficiency opportunities is divided into technologies and measures that are applicable to the different stages of production and various kiln types used in China: raw materials (and fuel) preparation; clinker making (applicable to all kilns, rotary kilns only, vertical shaft kilns only); and finish grinding; as well as plant wide measures and product and feedstock changes that will reduce energy consumption for clinker making. Table 1 lists all measures in this report by process to which they apply, including plant wide measures and product or feedstock changes. Tables 2 through 8 provide the following information for each technology: fuel and electricity savings per tonne of cement; annual operating and capital costs per tonne of cement or estimated payback period; and, carbon dioxide emissions reductions for each measure applied to the production of cement. This information was originally collected for a report on the U.S. cement industry (Worrell and Galitsky, 2004) and a report on opportunities for China's cement kilns (Price and Galitsky, in press). The information provided in this report is based on publicly-available reports, journal articles, and case studies from applications of technologies around the world.

Energy Conservation In Indian Cement Industry

Author : National Council for Cement and Building Materials (India)
ISBN : UOM:39015056330445
Genre : Cement industries
File Size : 41. 59 MB
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Contributed articles.

China S Technological Catch Up Strategy

Author : Michael T. Rock
ISBN : 9780199385331
Genre : Business & Economics
File Size : 83. 38 MB
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Prior to 1979, China had a bifurcated and geographically-dispersed industrial structure made up of a relatively small number of large-scale, state-owned enterprises in various industries alongside numerous small-scale, energy-intensive and polluting enterprises. Economic reforms beginning in 1979 led to the rapid expansion of these small-scale manufacturing enterprises in numerous energy-intensive industries such as aluminum, cement, iron and steel, and pulp and paper. Subsequently, the government adopted a new industrial development strategy labeled "grasp the large, let go the small." The aims of this new policy were to close many of the unprofitable, small-scale manufacturing plants in these (and other) industries, create a small number of large enterprises that could compete with OECD multinationals, entice these larger enterprises to engage in high-speed technological catch-up, and save energy. China's Technological Catch-Up Strategy traces the impact of this new industrial development strategy on technological catch-up, energy use, and CO2 emissions. In doing so, the authors explore several detailed, enterprise-level case studies of technological catch-up; develop industry-wide estimates of energy and CO2 savings from specific catch-up interventions; and present detailed econometric work on the determinants of energy intensity. The authors conclude that China's strategy has contributred to substantial energy and CO2 savings, but it has not led to either a peaking of or a decline in CO2 emissions in these industries. More work is needed to cap and reduce China's CO2 emissions.

Energy Efficiency In The Tanzanian Industry The Cement Industry As A Case Study

Author : C.F.J. Samplonius
ISBN : OCLC:989587354
Genre :
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Calcined Clays For Sustainable Concrete

Author : Karen Scrivener
ISBN : 9789401799393
Genre : Technology & Engineering
File Size : 28. 42 MB
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This volume focuses on research and practical issues linked to Calcined Clays for Sustainable Concrete. The main subjects are geology of clays, hydration and performance of blended system with calcined clays, alkali activated binders, economic and environmental impacts of the use of calcined clays in cement based materials. Topics addressed in this book include the influence of processing on reactivity of calcined clays, influence of clay mineralogy on reactivity, geology of clay deposits, Portland-calcined clay systems, hydration, durability, performance, Portland-calcined clay-limestone systems, hydration, durability, performance, calcined clay-alkali systems, life cycle analysis, economics and environmental impact of use of calcined clays in cement and concrete and field applications. This book compiles the different contributions of the 1st International Conference on Calcined Clays for Sustainable Concrete, which took place in Lausanne, Switzerland, June, 23-25, 2015.The papers present the latest research in their field. It contains nearly 80 papers and abstracts. Overall, this work gives a broad view of research on calcined clays in the field of construction and will stimulate further research into calcined clays for sustainable concrete.

Designing Green Cement Plants

Author : S.P. Deolalkar
ISBN : 9780128034354
Genre : Technology & Engineering
File Size : 39. 39 MB
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Cement production is known to be a polluting and energy-intensive industry. Cement plants account for 5 percent of global emissions of carbon dioxide and one of the main causes of global warming. However, cement it is literally the glue of progress. Designing Green Cement Plants provides the tools and techniques for designing new large cement plants that would promote sustainable growth, preserve natural resources to the maximum possible extent and make least possible additions to the Greenhouse Gases that cause global warming. Brief and but authoritative, this title embraces new technologies and methods such as Carbon Capture and Sequestration, as well as methods for harnessing renewable energy sources such as wind and solar. The author also discusses the efficient use of energy and materials through the use recycling. In addition, this book also examines thepossibilities of developing green cement substitutes such as Calera, Caliix, Novacem, Aether and Geopolymer cements. Includes the tools and methods for reducing the emissions of greenhouse Gases Explores technologies such as: carbon capture and storage and substitute cements Provides essential data to determining the unique factors involved in designing large new green cement plants Includes interactive excel spreadsheets Methods for preforming a cost benefits analysis for the production of green cements as opposed to conventional OPC

Energy Efficiency Guide For Industry In Asia

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ISBN : 9789280726473
Genre : Political Science
File Size : 40. 27 MB
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This guide has been developed for Asian companies who want to improve energy efficiency through Cleaner Production and for stakeholders who want to help them. It includes a methodology, case studies for more than 40 Asian companies in 5 industry sectors, technical information for 25 energy equipments, training materials, a contact and information database.--Publisher's description.

Process Control And Management

Author : P. L. Lee
ISBN : 0751404578
Genre : Business & Economics
File Size : 27. 85 MB
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The purpose of this book is to provide a balanced introduction to process control and management, aimed at the general process engineer. Rapid changes have occurred in process control over the past decade, mainly because of the deployment of robust and effective digital control equipment, and the development of the models which underpin the area. Historically, process control was seen as simply the maintenance of particular process variables at appropriate setpoints. This very narrow view has been superseded by the view that process control involves the regulation of any given process, in the context of a complete processing plant, to maximise the economic return from the plant. This wider definition brings into play a range of control regimes, from basic regulatory control, through advanced regulatory control, to complex process management. The organization of the book reflects this hierarchy, and is thus split into 3 parts, covering basic regulatory control, advanced process control and finally process management. The book is completed by the inclusion of several useful appendices, covering mathematical modelling, process optimisation and simulation.

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