Browsing by Subject "CCS technology"

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Access status: Open Access ,
Corrosion behaviour of selected power plant materials under oxyfuel combustion conditions
(Wydawnictwa AGH, 2011) Abang, Roger; Findeisen, Alexander; Krautz, Hans Joachim
To reduce the production of anthropogenic $CO_{2}$ emissions, two lines of research are being investigated for fossil fuel-fired power plants, especially for those fired with lignite. One line concentrates on increasing efficiency in conventional power plant units (e.g. 700 degrees of Celsius technology, coal drying) while the other concentrates on the implementation of $CO_{2}$ - reducing technologies including pre-combustion, post-combustion and oxyfuel technology. The standard low Nox-producing operation of large and modern lignite-fired power plants as well as the altered process conditions that occur when oxyfuel technology is implemented results in combustion conditions that cause damage to system components. Therefore, the corrosion of plant components as a result of contact with flue gas plays a particularly significant role. Within the framework of a BMBF-funded project investigations focussing on the corrosion behaviour of selected plant materials under conventional air and oxyfuel combustion conditions are being evaluated. These investigations were carried out in a 500 kWth test facility over a timeframe of 110 hours and initial corrosion occured. The corroded probes are then placed for a further 1.000 hours in a laboratory test rig at the BTU Cottbus, Chair of Power Plant Technology. The material probes investigated were: 16Mo3, 13CrMo4-5, 7CrVTiB10-10, 10CrMo9-10 and VM12SHC. Subsequently, the probes are analysed with the help of light and scanning electron microscopes. From the results of the investigations, conclusions on the corrosion behaviour of materials and altered process conditions can be reached, which also demonstrates the need for further investigations to be carried out in this area.
Access status: Open Access ,
Lusatian lignite - sustainable mining to meet future climate change policy
(Wydawnictwa AGH, 2009) Rolland, Wolfgang; Ketzmer, Wolfgang
For Vattenfall, it is an important aspect of their entrepreneurial activity to make lignite sustainable in a climate-political perspective, in particular with regard to the economic development of the region. Under the headline »Innovative Energy Region Lausitz-Spreewald« representatives of the company, educational and other institutions and last but not least of policy are dedicated to a future-oriented development of Lusatia. An essential element of the long-term mining and power plant concept is the development of the CCS (Carbon Capture and Storage) - technology. Around 2020 this technology should be available for low $CO_{2}$ emission power generation based on lignite in commercial scale. Apart from climate-neutral lignite-based power generation, the expansion of the energy-economic know-how and the use of other energy sources are among others important topics. This also includes the use of wind energy on recultivation areas, generation of biogas from biomass for power generation and the capture of $CO_{2}$ by microalgae. Of great importance is also the »low-energy housing« topic, in particular for future resettlement locations. Lignite has its place in the energy mix, because first of all lignite is a chance for the future, especially in Lusatia.