Energy and environmental savings via optimisation of the production process at a Spanish cement factory

Castañón, Ana María; García-Granda, Santiago; Guerrero, A.; Lorenzo, Ma Paz; Angulo, Santiago

doi:10.1016/j.jclepro.2014.03.028

Cited by 23 publications

(13 citation statements)

References 14 publications

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“…Since the World Commission on Environment and Development (WCED) proposed a long-term vision to maintain the resources necessary to provide future needs (Butlin, 1989), these rules have been changing, and civil structure projects are attempting to consider sustainable aspects in the selection of structural materials (Castañón et al, 2015), to promote low-carbon construction processes (Chen et al, 2010;Wong et al, 2013) and to select the best design (García-Segura et al, 2014;Yeo and Potra, 2015). This is particularly important in the construction sector, since it is one of the main sectors generating greenhouse gases (Liu et al, 2013) and using natural resources (Lippiatt, 1999).…”

Section: Introductionmentioning

confidence: 99%

Sustainable bridge design by metamodel-assisted multi-objective optimization and decision-making under uncertainty

García-Segura

Penadés-Plà

Piqueras

2018

Journal of Cleaner Production

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Today, bridge design seeks not only to minimize cost, but also to minimize adverse environmental and social impacts. This multi-criteria decision-making problem is subject to variability of the opinions of stakeholders regarding the importance of criteria for sustainability. As a result, this paper proposes a method for designing and selecting optimally sustainable bridges under the uncertainty of criteria comparison. A Pareto set of solutions is obtained using a metamodel-assisted multi-objective optimization. A new decision-making technique introduces the uncertainty of the decision-maker's preference through triangular distributions and thereby ranks the sustainable bridge designs. The method is illustrated by a case study of a three-span post-tensioned concrete box-girder bridge designed according to the embodied energy, overall safety and corrosion initiation time. In this particular case, 211 efficient solutions are reduced to two preferred solutions which have a probability of being selected of 81.6% and 18.4%. In addition, a sensitivity analysis validates the influence of the uncertainty regarding the decision-making. The approach proposed allows actors involved in the bridge design and decision-making to determine the best sustainable design by finding the probability of a given design being chosen.

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Section: Introductionmentioning

confidence: 99%

Sustainable bridge design by metamodel-assisted multi-objective optimization and decision-making under uncertainty

García-Segura

Penadés-Plà

Piqueras

2018

Journal of Cleaner Production

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“…Table 5 gather the kiln parameters ilustrated in Figure 1. The sintering temperature is the highest temperature reached in the kiln during the clinkering process, and is measured by a pyrometer sited close to the fuel outlet nozzle between 1-2 meters from the end and directed towards the clinker [35]. This value is recorded every five minutes, and hourly averages were calculated for comparison with quality values obtained from diffraction diagrams and X-ray fluorescence [36].…”

Section: Emission Controlmentioning

confidence: 99%

“…This temperature difference means a reduction in CO2 and energy savings, Table 7. It was estimated that the decreasing sintering temperature of 50 ºC means a reduction in CO2 emissions of more than four thousand tons a year [35,37].…”

Section: Sintering Temperaturementioning

confidence: 99%

Used Tires as Fuel in Clinker Production: Economic and Environmental Implications

Castañón¹,

Pera²,

Bascompta³

et al. 2021

Preprint

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The objective of this work is to compare how the gases emitted during the manufacture of the clinker vary in a cement plant, using two types of fuel: petroleum coke and unusable tires (UTs). The study is based on a case study using real time data on more than 40 process variables. Gases are analysed from two points of the production process: Sintering Kiln, main focus of emission to the atmosphere by chimney, and Preheater. The variation of CO and NOx depending on the oxygen and fuel type is studied. The SO2 levels are also analyzed, observing a decrease when using the UTs. The quality of the Clinker has been compared depending on the fuel type. The results are compared, on the one hand, with the quality of the clinker, determined by the content of the majority (C3S, Alite) and minority (Free CaO) phases, and, on the other hand, with the Kiln sintering temperature, the most influential parameter in the productive process. It is verified that Clinker quality is maintained, regardless of the type of fuel used. Concluding that the use of UTs as fuel can generate an important economic and environmental benefit for cement companies and their environment.

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“…Similarly energy efficiency improvement and CO 2 reduction potential through the use of 22 energy efficiency measures were studied for India by using forward looking bottom-up Conservation Supply Cure (CSC) model [17]. A statistical approach has been used for finding the relationship between kiln parameters with clinker quality for Spanish cement factory and found that a decrease in the kiln Sintering Temperature (standardized at 50°C) yielded produced the same level of quality in the final product, thus paving the way for reduction in petroleum coke consumption and reduction in CO 2 emissions [18].…”

Section: Energy Analysis and Modeling In Cement Industriesmentioning

confidence: 99%

Policy Intervention to Reduce Energy Consumption and Mitigate Environmental Emission in Cement Industries of Nepal

Singh¹,

Shakya²

2016

IJEPP

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Nepal is a developing country with huge potential of investment in agriculture, cement and hydropower sector. Industrial development in Nepal is at a premature state and requires lot of technical and financial investment. Cement industry is one of the potential industries to grow in the future, mainly because of the reserved limestone and increasing developmental activities. This study analyzed the energy and environmental implications of implementing best available technologies in cement industries of Nepal by using Long-rand Energy Alternatives Planning system (LEAP) framework. Production capacity of cement in 2014 is estimated to be 2.46 million MT which is expected reach 25.41 million MT by 2030. The final energy demand for the base year, 2014 is 5.4 PJ. It would increase to 13.69 PJ, 16.91 PJ and 25.67 PJ in 2030, under normal (BAU), medium growth (MG) and high growth (HG) scenarios respectively. Compared to the BAU scenario, the cumulative energy demand would increase by 21.46% for MG scenario and 78.00% for HG scenario during 2014 to 2030. The CO 2 emission for the base year 2014 is estimated to be 365.40 thousand MT. It would increase to 1,540.70 thousand MT, 2,292.90 thousand MT and 4105.60 thousand MT in 2030, under BAU, MG and HG, respectively. Compared to the BAU scenario the cumulative CO 2 emission would grow as high as 78.06% under HG scenario. This indicates the need for introducing the energy efficient and low carbon technologies to address the issues related to energy supply security and environmental degradation. This study also analyzed the three policy intervention scenarios consisting of introduction of efficient technology (EFF) scenario, CO 2 emission mitigation (MIT) scenario and waste heat recovery for power generation (WHRPG) scenario. Under EFF scenario, the cumulative energy consumption would decrease by 11.67% during 2014 to 2030 as compared to the BAU scenario. Likewise, CO 2 emission would decrease by 33.64% under MIT scenario as compared to the BAU. Under WHRPG scenario, there would be cumulative electricity generation of 1,446.31 GWh worth NRs. 9.11 billion as compared to the BAU scenario during the study period. This study also indicates the need of formulating appropriate energy efficiency and climate change related policies of the country.

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Energy and environmental savings via optimisation of the production process at a Spanish cement factory

Cited by 23 publications

References 14 publications

Sustainable bridge design by metamodel-assisted multi-objective optimization and decision-making under uncertainty

Sustainable bridge design by metamodel-assisted multi-objective optimization and decision-making under uncertainty

Used Tires as Fuel in Clinker Production: Economic and Environmental Implications

Policy Intervention to Reduce Energy Consumption and Mitigate Environmental Emission in Cement Industries of Nepal

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