Wyniki wyszukiwania - BazTech

1

Chasing shadows: technology and socioeconomic barriers versus climate targets for iron and steel industry

Shatokha V.

Archives of Materials Science and Engineering

|

2018

|

Vol. 92, nr 1

33--40

EN

Purpose: To analyse the potential of various scenarios for reduction of carbon footprint of iron and steel sector and to reveal plausible pathways for modernisation. Design/methodology/approach: Several scenarios have been developed in order to assess the dynamics and extent of decarbonisation required to meet the global climate change mitigation target. This includes deployment of the best available technologies, increased share of secondary steel production route and deployment of innovative ironmaking technologies with various decarbonisation extent achieved in a variable timeframe. Findings: The window of opportunities to ensure compliance of steel sector development with climate goal still exists though shrinks. Modernisation shall include global deployment of best available technologies, increased share of secondary steel production and rapid deployment of innovative technologies including carbon capture and storage. Delayed modernisation will require much deeper decarbonisation, which will increase the total cost of mitigation. International policies shall be put in place to ensure availability of funding and to assist technology transfer. Short term transition strategies shall be employed as soon as possible for bridging long term climate change mitigation strategies and current state of the iron and steel industry worldwide. Research limitations/implications: Methodology applied takes into account the best available technologies and some novel ironmaking methods with the potential for commercialisation during the next decade; however, it is implied that the radically innovative iron- and steelmaking technologies with near-zero CO2 emissions will not be mature enough to deliver tangible impact on the sector’s carbon footprint before 2050. Practical implications: Obtained results can be helpful for definition of the modernisation strategies (both state-level and corporate) for the iron and steel industry. Originality/value: Dynamics and extent of decarbonisation required to meet global climate change mitigation targets have been revealed and the results can be valuable for assessment of the consistency of sectoral climate strategies with global targets.

2

Comparative analysis of two processes for desulphurization of battery paste

Malak D., Rodak A, Studnicka A., Soszyńska W

Journal of Achievements in Materials and Manufacturing Engineering

|

2012

|

Vol. 55, nr 2

855--859

EN

Purpose: The paper touches the problem of recycling battery scrap and desulphurization methods. The aim of this paper is to compare sodium method and new amine method for desulphurization of battery paste. Also the comparison of this methods refers to environmental and technological aspects of lead smelting. Design/methodology/approach: Base of the comparison of two different methods were tests of melting of desulphurized battery paste in a rotary-tilting furnace by BJ Industries Company. Findings: Both methods of desulphurization allow to reduce amount of sulphur to less than 1%. The economic considerations determine the degree of desulphurization of battery paste. Amine method allows to reduce sulphur to a degree of about 0,5% maintaining favorable technical and economical parameters. Research limitations/implications: Effectiveness of amine method was confirmed in the pilot-scale tests, but it’s difficult to say what will be the results of desulphurization by this method in industrial scale. Originality/value: The value of this paper lies in demonstrating the possibilities of application of the new amine method of battery paste desulphurization, compared to for commonly used methods.

3

The technological processes optimization according to the sustainable technology procedure

Nowosielski R., Spilka M., Kania A.

Journal of Achievements in Materials and Manufacturing Engineering

|

2006

|

Vol. 14, nr 1-2

178--183

EN

Purpose: The paper presents a possibility of the optimization includes in the sustainable technology designing and modernization. Design/methodology/approach: To the estimation of the technological processes towards the sustainable technological processes used four environmental criteria. The possibility of the optimum technological process choice was proposed. Findings: The conclusion of the work is the modified sustainable technology (MSTP) procedure elaborated. In this case the BREFs were used as a standard for the technological processes estimation. Research limitations/implications: As a reference unit, except BREF, can be used other standards. One of the possibilities is the sustainable technology creation to which all the analysed technological processes can be related. Practical implications: The work is an example of the least environmental influences technological processes searching. It gives the basis of the sustainable technological processes designing and the life cycle of the technological processes creation and analyse. Originality/value: The paper presents the sustainable technological processes procedure and its modification with regard of the polyoptimization. This article shows the possibility of the computer aid used.

4

Optimization as an alternative in search of sustainable technological processes

Kania A., Spilka M.

Journal of Achievements in Materials and Manufacturing Engineering

|

2006

|

Vol. 17, nr 1-2

413--416

EN

Purpose: The paper presents a possibility of optimization (polyoptimization) to analyse, estimation and selection of materials technological processes used. Design/methodology/approach: The article makes possible genetic algorithms to ecological, technical and economic estimation of the technological processes used. It also presents search of optimum technological process methodology. Considering complicated and many-layered structure of the sustainable development, optimization is the way in aim at better (sustainable) technological process. Findings: The optimization methods should have more and more meaning in the materials engineering. It is because of many possible technical problems to solutions. Research limitations/implications: The genetic algorithms method has a self – evident use accomplishing the choice of the best materials technological process in respect of improvement its mechanical, physical properties and reduces negative environmental influences. Practical implications: Polyoptimization and especially genetic algorithms in connection with proper computer software can apply in the industry for group technological processes estimation. This approach makes possible search of the best available processes and selection of different modernization solutions. Originality/value: In this article scantiness of the sustainable development theory presented. Because of that optimization as an alternative in search of better (sustainable) technological processes proposed. Also in the paper compared the most important multiobjective optimization methods. Using this methods give a chance of the best (with regard to adequate criteria) technological process selection to used