scholarly journals Evaluation of potential improvements to coking process energy efficiency as a consequence of implementing a coal blend pre-drying operation

2013 ◽  
Vol 29 (3) ◽  
pp. 151-165
Author(s):  
Piotr Żarczyński ◽  
Andrzej Strugała ◽  
Aleksander Sobolewski ◽  
Wojciech Kaczmarek
Keyword(s):  
Energy Efficiency ◽  
Coal Blend ◽  
Process Energy

Streszczenie Polityka zrównoważonego rozwoju, wzrost świadomości społeczeństw oraz wynikające stąd ambitne cele w zakresie polityki energetycznej w Unii Europejskiej z jednej strony zmuszają, a z drugiej inspirują przed- siębiorstwa do poprawiania sprawności energetycznej stosowanych technologii. Przemysł koksowniczy w Polsce i całej Europie także poszukuje dróg optymalnego rozwoju technologicznego, pozwalającego na poprawę efek- tywności energetycznej, a przez to także zwiększenia rentowności przedsiębiorstwa. Koksownictwo krajowe poszukuje również technologii pozwalających w jeszcze większym stopniu na korzystanie z krajowych zasobów węgli, a przez to z renty geograficznej (Ozga-Blaschke 2012; Kasztelewicz 2012). Jednym z bardziej atrakcyjnych kierunków rozwoju dla polskich koksowni, spełniającym łącznie wszystkie te postulaty, jest wdrożenie operacji podsuszania wsadu. Skojarzenie tej technologii z instalacją suchego chłodzenia koksu sprawia, że obie te technologie stosowane łącznie znacznie podnoszą sprawność energetyczną procesu koksowania, a jednostkowe zużycie gazu koksowniczego może spaść o 12,6%. W artykule przeprowadzono analizę wyników w zakresie poprawy efektywności energetycznej procesu koksowania po wdrożeniu operacji podsuszania wsadu niezależnie oraz w skojarzeniu z instalacją suchego chłodzenia koksu. W pierwszym rozważanym przypadku możliwe jest ograniczenie zużycia ciepła koksowania o 2,8%. Natomiast skojarzenie tych dwóch technologii, poza innymi pozytywnymi efektami, znacząco zwiększa skalę oszczędności do 12,6%. Całkowite ciepło potrzebne dla skok- sowania wsadu wynoszące 2600 MJ/t wsadu wilgotnego, zmniejsza się do 2527,5 MJ/t wsadu wilgotnego w przypadku wdrożenia operacji podsuszania samoistnie, a w przypadku skojarzenia tej instalacji z technologią suchego chłodzenia koksu do 2273,6 MJ/t wsadu wilgotnego. Skojarzenie obu tych technologii zdaje się być szczególnie atrakcyjne w aspekcie energetycznym ponieważ pozwala wykorzystać entalpię fizyczną gorącego koksu z bardzo wysoką sprawnością. W końcowej części przedstawiono porównanie podstawowych parametrów energetycznych procesu koksowania dla różnych układów technologicznych, obejmujących podsuszanie wsadu i/lub suche chłodzenie koksu.

Influence of basic parameters of metal cutting with a gas laser on process energy efficiency

2005 ◽  
Author(s):  
Vladimir A. Karasev ◽  
Mikhail G. Galushkin ◽  
Vladimir S. Golubev ◽  
Vladislav Y. Panchenko ◽  
Elena O. Filippova
Keyword(s):  
Energy Efficiency ◽  
Metal Cutting ◽  
Gas Laser ◽  
Basic Parameters ◽  
Process Energy

Energy Balance Analysis on the Slow Pyrolysis Process of Cattle Manure

2013 ◽  
Vol 392 ◽  
pp. 531-534 ◽  
Author(s):  
Xuan Liu ◽  
Zi Fu Li ◽  
Yao Zhong Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Resource ◽  
Cow Manure ◽  
Pyrolysis Process ◽  
Slow Pyrolysis ◽  
Energy Value ◽  
Balance Analysis ◽  
Process Energy ◽  
In The Beginning ◽  
Energy Balances

Energy balances are increasingly used to assess the energy efficiency and productivity of production. In this study, energy balances for the slow pyrolysis process of cow manure were calculated. The results show that, for cow manure dry matter, all the recovered energy value from the pyrolysis process products is about 12 times of the energy needs for the dry matters pyrolysis process. But the moisture has a noteworthy impact on the energy efficiency. When the input moisture is 60.85%, the recovered energy value from all products is approximately equal to the process energy consumption, and if only using non-condensable gases (NCG) as the energy resource, the input moisture should lower than 36.63%. Meanwhile, if the vapor could be separated in the beginning phase of pyrolysis process, the energy efficiency will be greatly improved, e.g. if removed all water vapor out the system at 423K, the former two data could be 71.43% and 48.18%, which is 10.58% and 11.45% higher than the process without vapor separation handling.

scholarly journals INCREASING OF PROCESS ENERGY EFFICIENCY OF BIOGAS PLANTS PRODUCTION PROCESSING

2017 ◽  
pp. 43-53 ◽  
Author(s):  
M.M. Maksimov ◽  
◽  
V.O. Davydov ◽  
G.V. Krusir ◽  
O.B. Maksimova ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Biogas Plants ◽  
Process Energy

Investigation of thermal properties of blast furnace slag to improve process energy efficiency

2017 ◽  
Vol 149 ◽  
pp. 137-145 ◽  
Author(s):  
Sara Yasipourtehrani ◽  
Vladimir Strezov ◽  
Sergey Bliznyukov ◽  
Tim Evans
Keyword(s):  
Energy Efficiency ◽  
Blast Furnace ◽  
Thermal Properties ◽  
Blast Furnace Slag ◽  
Process Energy ◽  
Furnace Slag

scholarly journals Energy, Exergy and Environmental Compatibility Analyses of LPG and Household Kerosene Utilisations as Domestic Fuels in Nigeria: 1980 – 2019

2021 ◽  
pp. 46-56
Author(s):  
I. Badmus ◽  
A. J. Bakri
Keyword(s):  
Energy Efficiency ◽  
Urban Areas ◽  
Exergy Efficiency ◽  
Liquefied Petroleum Gas ◽  
Environmental Compatibility ◽  
Energy And Exergy ◽  
Process Energy

Household kerosene and Liquefied Petroleum Gas form the bulk of domestic fuels, especially in Nigerian urban areas. Data on both fuels, from 1980 to 2019, were collected, mainly from Nigerian National Petroleum Corporation sources. Energy, exergy and environmental compatibility analyses were carried out on the utilisation of LPG for cooking, and household kerosene for both cooking and lighting. Kerosene lighting, with 0.05% energy efficiency and 0.045% exergy efficiency, was extremely poor. Cooking, with different mixes of both fuels, yielded energy efficiencies ranging from 35.04% to 44.54%. Corresponding exergy efficiencies were from 7.75% to 9.98%. Associated environmental compatibility factors were from 0.71749 to 0.73945. Overall process energy efficiencies, involving both cooking and lighting, were from 4.05% to 34.19%. Corresponding exergy efficiencies were from 0.93% to 7.61%. Overall environmental compatibility factors ranged from 0.71746 to 0.73259. Energy and exergy efficiencies, as well as environmental compatibility factors, increased directly with increase in LPG utilisation in the fuel-mix. 

scholarly journals DEA BASED APPROACH TO SET ENERGY EFFICIENCY TARGET UNDER PAT FRAMEWORK: A CASE OF INDIAN CEMENT INDUSTRY

2018 ◽  
Vol 2 (1) ◽  
pp. 103 ◽  
Author(s):  
Anoop Singh ◽  
Bharat Sharma
Keyword(s):  
Energy Efficiency ◽  
Data Envelopment Analysis ◽  
Energy Conversion ◽  
Production Process ◽  
Specific Energy Consumption ◽  
Cement Industry ◽  
Data Envelopment ◽  
Suggested Approach ◽  
Energy Efficiency Targets ◽  
Process Energy

Aim: Propose a Data Envelopment Analysis (DEA) based approach to set energy efficiency targets under the Perform, Achieve and Trade (PAT) framework of the Bureau of Energy Efficiency (BEE)  Design / Research methods: We adopt input-oriented non-controllable DEA model with variable return to scale DEA Conclusions / findings: Due to the implication of in-house energy conversion, we estimate separate energy efficiency targets based on “purchased energy” as well as “process energy”. The later accounts for energy finally used in the production process after in-house energy conversion. Originality / value of the article: The Bureau of Energy Efficiency (BEE) in India has introduced a market based energy efficiency mechanism under the Perform, Achieve and Trade (PAT) framework. Under this mechanism, energy efficiency certificates can be traded across eight identified sectors thus bringing cost effectiveness to achieve the energy efficiency targets. To implement the scheme, differentiated energy efficiency targets have been set using baseline specific energy consumption. This approach does not account for technical and operational aspects like vintage, scale, output mix and input mix. This study proposes an alternative target setting method based on Data Envelopment Analysis (DEA) which takes into account some of the above mentioned technical and operational differences across the industrial plants. A comparative assessment highlights the efficacy of DEA methodology in implementation of the PAT scheme. We estimate energy efficiency targets based on “purchased energy” as well as “process energy”, i.e. that used finally in the production process. Implications of the research: BEE may adopt the suggested approach to set energy efficiency targets for subsequent cycles under the Perform, Achieve and Trade (PAT) framework.

scholarly journals Modelling energy savings in chicken meat osmotic dehydration process

2019 ◽  
Vol 104 ◽  
pp. 01005
Author(s):  
Vladimir Filipović ◽  
Marko Petković ◽  
Ivana Filipović ◽  
Jelena Filipović
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Osmotic Dehydration ◽  
Chicken Meat ◽  
Convective Drying ◽  
Good Prediction ◽  
Dehydration Process ◽  
Technological Parameters ◽  
Process Energy ◽  
Quantity Of Heat

Osmotic dehydration is a low energy demanding process, and in order to investigate and estimate the energy efficiency of the osmotic dehydration process, convective drying is taken as a base treatment for comparison. Obtained energy savings data of the osmodehydration process are used to develop mathematical models of the energy savings of the process. Results showed that maximal quantity of heat saved, indicated on high levels of energy efficiency of chicken meat osmodehydration process, while both technological parameters statistically significantly influenced process energy efficiency. The developed mathematical the model, allows good prediction of the quantity of heat saved based on applied technological parameters.

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