Exergy analyses in cement production applying waste fuel and mineralizer

Renó, Maria Luiza Grillo; Torres, Felipe Martins; Silva, Rogério José da; Santos, José Joaquim Conceição Soares; Melo, Mírian de Lourdes Noronha Motta

doi:10.1016/j.enconman.2013.05.043

Cited by 37 publications

(16 citation statements)

References 24 publications

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“…4 Consequently, there is a noticeable decrease in the process temperature in the clinker production mass, which in turn reduces the consumption of heat per kilogram of clinker produced. 5 In ironworks, the carbon part is used as a fuel and a reducing agent. Fluorides increase the flow rate of the slag and lower the melting point, but at the same time they are also harmful (act corrosively) to the furnace wall.…”

Section: Treatment Methods Summarymentioning

confidence: 99%

Sustainable waste-treatment procedure for the spent potlining (SPL) from aluminium production

Tropenauer¹,

Klinar²,

Samec³

et al. 2019

Mater. Tehnol.

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Some different possible solutions to the problem of industrial waste originating from primary aluminium production (also known as SPL) have been investigated. The latest techniques to treat SPL are presented, with the highlight being flotation and chemical treatment technology. Laboratory tests confirmed that the SPL treatment model is not feasible and viable within partial solutions. Only the systematically achieved solution can be in accordance with a wide range of contemporary demands. Partly, the cause is the allotropic form of the carbon cathodes produced and partly also the impurities in the waste material that prevent an effective one-phase treatment. Laboratory investigations of reactive extraction open up the possibilities for wide SPL material utilization. The preliminary inquiry confirms that the interdisciplinary approach leads to open solutions leading to possible market interest or generated value from the waste as the main goal of a circular economy.

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Section: Treatment Methods Summarymentioning

confidence: 99%

Sustainable waste-treatment procedure for the spent potlining (SPL) from aluminium production

Tropenauer¹,

Klinar²,

Samec³

et al. 2019

Mater. Tehnol.

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“…This includes quantifying the benefits of water reclamation in urban water management (Wang, Xiaochang et al, 2011); assessing the environmental performance of wastewater treatment plants (Mora and Jr, 2006;Khosravi and Panjeshahi, 2013), and comparing water supply and treatment technologies (Martínez et al, 2010). More generally, exergy analysis is applied at many different scales, from lower level processes such as cement production (Koroneos et al, 2005;Madlool et al, 2012;Renó et al, 2013), biofuel production (Sciubba and Ulgiati, 2005), chlorine production (Ayres et al, 1998b) and car recycling (Amini et al, 2007;Ignatenko et al, 2007); up to the highest level, with studies quantifying exergy flows for the whole of the United Kingdom (Hammond and Stapleton, 2001;Gasparatos et al, 2009b) and China (Zhang and Chen, 2010).…”

Section: Exergy Analysismentioning

confidence: 99%

Comparing performance metrics for multi-resource systems: the case of urban metabolism

Ravalde

Keirstead

2017

Journal of Cleaner Production

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We investigate different approaches to assessing the performance of multi-resource systems, i.e. networks of processes used to convert resource inputs to useful goods and services. For a given set of system outputs, alternative resource inputs are often possible so performance measures are needed to determine the best system configuration for a given goal. We define such performance measures according to a novel framework which categorises them into two types: those that can be calculated from a system's aggregate inputs and outputs (‘black-box’ metrics, e.g. carbon footprint); and those that require knowledge of resource conversion processes within the system (‘grey-box’ metrics). Urban areas are an important example application and metrics can be calculated from urban metabolism data. We calculate eight black-box metrics for fifteen global cities and find that performance is poorly correlated between the measures. This suggests that performance assessments should adopt grey-box approaches and consider flows at the level of individual processes within a city, using methods such as exergy analysis and ecological network analysis. We are led to suggest how to: (1) improve urban metabolism accounting to assist grey-box metric calculation, by including greater detail on conversion process and resource quality; and (2) promote these metrics amongst relevant decision makers

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“…Burning wastes in the cement industry is under research since the cement industry is characterized by high energy thermal consumption due to the high temperatures necessary to produce the clinker (around 1450 °C) . The use of alternative fuels in the cement industry can change the temperature profile of the kiln, the sintering temperature, the length of the sintering zone and the cooling conditions, which can modify the final characteristics of the clinker.…”

Section: Exergy Analysis For Optimization Of Energy‐intensive Productmentioning

confidence: 99%

Exergy analysis of energy‐intensive production processes: advancing towards a sustainable chemical industry

Luis

Bruggen

2014

J of Chemical Tech & Biotech

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Exergy analysis is becoming a very powerful strategy to evaluate the real efficiency of a process. Its application in the chemical industry is still at an early stage but many interesting remarks can be obtained from the recent research in the most energy intensive processes of the chemical industry: the production of chemicals, the cement industry, the paper industry and, the iron and steel industry. The present review analyzes the opportunities and challenges in those sectors by considering exergy analyses as the first required step (although not sufficient) to advance towards a more sustainable chemical industry. Social, environmental and economic factors play a role in the critical evaluation of a process and exergy could be considered as the property that joins together those three cores of sustainability.

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Exergy analyses in cement production applying waste fuel and mineralizer

Cited by 37 publications

References 24 publications

Sustainable waste-treatment procedure for the spent potlining (SPL) from aluminium production

Sustainable waste-treatment procedure for the spent potlining (SPL) from aluminium production

Comparing performance metrics for multi-resource systems: the case of urban metabolism

Exergy analysis of energy‐intensive production processes: advancing towards a sustainable chemical industry

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