Measuring Improvement in the Energy Performance of the U.S. Cement Industry

2011 ◽  
Author(s):  
Gale A. Boyd ◽  
Gang Zhang
Keyword(s):  
Energy Performance ◽  
Cement Industry ◽  
The U.S

scholarly journals Comparison of Technologies for CO2 Capture from Cement Production—Part 1: Technical Evaluation

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 559 ◽  
Author(s):  
Mari Voldsund ◽  
Stefania Gardarsdottir ◽  
Edoardo De Lena ◽  
José-Francisco Pérez-Calvo ◽  
Armin Jamali ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Co2 Capture ◽  
Energy Performance ◽  
Primary Energy ◽  
Cement Industry ◽  
Emission Abatement ◽  
Calcium Looping ◽  
Electricity Mix ◽  
Technical Evaluation ◽  
The Individual

A technical evaluation of CO2 capture technologies when retrofitted to a cement plant is performed. The investigated technologies are the oxyfuel process, the chilled ammonia process, membrane-assisted CO2 liquefaction, and the calcium looping process with tail-end and integrated configurations. For comparison, absorption with monoethanolamine (MEA) is used as reference technology. The focus of the evaluation is on emission abatement, energy performance, and retrofitability. All the investigated technologies perform better than the reference both in terms of emission abatement and energy consumption. The equivalent CO2 avoided are 73–90%, while it is 64% for MEA, considering the average EU-28 electricity mix. The specific primary energy consumption for CO2 avoided is 1.63–4.07 MJ/kg CO2, compared to 7.08 MJ/kg CO2 for MEA. The calcium looping technologies have the highest emission abatement potential, while the oxyfuel process has the best energy performance. When it comes to retrofitability, the post-combustion technologies show significant advantages compared to the oxyfuel and to the integrated calcium looping technologies. Furthermore, the performance of the individual technologies shows strong dependencies on site-specific and plant-specific factors. Therefore, rather than identifying one single best technology, it is emphasized that CO2 capture in the cement industry should be performed with a portfolio of capture technologies, where the preferred choice for each specific plant depends on local factors.

scholarly journals From Energy Audit to Energy Performance Indicators (EnPI): A Methodology to Characterize Productive Sectors. The Italian Cement Industry Case Study

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8436
Author(s):  
Giacomo Bruni ◽  
Alessandra De Santis ◽  
Carlos Herce ◽  
Luigi Leto ◽  
Chiara Martini ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Energy Transition ◽  
Energy Performance ◽  
Point Of View ◽  
Cement Industry ◽  
Economic Sectors ◽  
Metallic Mineral ◽  
Energy Audits ◽  
The Impact

In this work, a novel methodology to assess energy performance indicators of productive and economic sectors trough the analysis of the Italian mandatory energy audits database is presented. The updating of sectoral reference energy performance indicators is fundamental for both companies and policy makers—for the formers to evaluate and compare their energy performance with competitors in order to achieve improvements and for the latter to effectively monitor the impact of energy policies. This methodology could be potentially applied to all production sectors, providing key information needed to characterize various production processes from an energy point of view. Awareness of energy efficiency and sectorial benchmarking represent the first necessary steps for companies moving towards energy transition. This paper provides details of the statistical method developed and its application to the NACE 23 division “Manufacturing of other non-metallic mineral products”, with a focus on the cement industry. For this sector, results are presented in terms of specific indicators based on energy source. General results, methodological insights, and validation of the proposed case study are discussed.

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