According to the German federal government's climate protection targets, there will be a continuous reduction of lignite-based electricity well before 2030. Simulations show that the currently authorized lignite mines in eastern Germany would not be fully depleted if the climate protection...

Den Klimaschutzzielen der Bundesregierung zufolge muss dieBraunkohleverstromung in Deutschland bereits deutlich vor demJahr 2030 kontinuierlich abnehmen. Simulationen zeigen, dass diebereits genehmigten Tagebaufelder in den ostdeutschen Revierenbei einer Einhaltung der Klimaschutzziele bis 2030...

Den Klimaschutzzielen der Bundesregierung zufolge muss dieBraunkohleverstromung in Deutschland bereits deutlich vor demJahr 2030 kontinuierlich abnehmen. Simulationen zeigen, dass diebereits genehmigten Tagebaufelder in den ostdeutschen Revierenbei einer Einhaltung der Klimaschutzziele bis 2030...

Kohlekraftwerke verursachen etwa ein Drittel des Kohlendioxidausstoßes in Deutschland. Wird das weiterhin hohe Niveau der Kohleverstromung zukünftig nicht gesenkt, sind nicht nur die deutschen Klimaschutzziele für die Jahre 2020 und 2050 gefährdet, sondern auch die nachhaltige Energiewende....

Coal-fired power stations are responsible for around a third of Germany's carbon emissions. Failure to reduce the persistently high level of coal-fired power generation threatens Germany's climate targets for 2020 and 2050 and undermines a sustainable energy transition. Calculations by DIW...

Coal-fired power stations are responsible for around a third of Germany's carbon emissions. Failure to reduce the persistently high level of coal-fired power generation threatens Germany's climate targets for 2020 and 2050 and undermines a sustainable energy transition. Calculations by DIW...

Coal-fired power stations are responsible for around a third of Germany's carbon emissions. Failure to reduce the persistently high level of coal-fired power generation threatens Germany's climate targets for 2020 and 2050 and undermines a sustainable energy transition. Calculations by DIW...

Kohlekraftwerke verursachen etwa ein Drittel des Kohlendioxidausstoßes in Deutschland. Wird das weiterhin hohe Niveau der Kohleverstromung zukünftig nicht gesenkt, sind nicht nur die deutschen Klimaschutzziele für die Jahre 2020 und 2050 gefährdet, sondern auch die nachhaltige Energiewende....

The German economic and industrial development in the nineteenth and twentieth century was based (among other things) on coal. After World War II, the reconstruction of both German states, too, was largely organized around the coal and steel industry. Therefore, it is a particular challenge,...

The reduction of greenhouse gas (GHG) emissions, in particular CO2, is a major objective of the German energiewende. There has been broad consensus on this goal for many years now - in contrast to the continuing discussion over the proposed shutdown of Germany’s nuclear power plants. The...

Die Zukunft der deutschen Braunkohle in einer zunehmend von erneuerbaren Energieträgern geprägten Stromwirtschaft wird derzeit kontrovers diskutiert. An allen drei Braunkohlestandorten (Rheinisches, Mitteldeutsches und Lausitzer Revier) gibt es Pläne zum Bau neuer Braunkohlekraftwerke sowie...

In an electricity industry increasingly characterized by renewable energy sources, there is much controversy surrounding the future of lignite in Germany. In all three lignite mining regions (Rhineland, central Germany, and Lausitz), there are plans for new lignite-fired power stations and...

From the point of view of coal consumers, which is visible to the naked eye is the price and size and its size dynamics is necessary for attention to anyone, due the fact that directly or indirectly, everyone in the situation of power buyer. In the area of lignite extraction, it is maintaing the...

In this paper is presented a way to contribute to the environmental protection when it comes to coal which waits in big deposits to be burned for energy production. Because of certain parameters, in some places, the deposited coal could overheat and self ignite, thus loosing its caloric...

The information is justifying its importance by the fact that its detailed aspects which contains can lead to signified economies and to the fusion of the stocking operations and procedures, when it is used the elaboration of decisions. The most complex structure, as data basis offered to the...

This paper evaluates three lignite-fired OPSB (open pulverizing system boiler) processes, named OPSB-A, OPSB-B and OPSB-C, corresponding to three options of drying agents used for the pulverizing systems. OPSB-B is similar to our previous work [18] on drying agent composition. Performances of...

Pre-drying of lignite before feeding to the boiler is a potential way to increase the net efficiency of lignite-fired power plants. Lignite pre-drying is, however, a high energy consumption process with a high risk of spontaneous ignition. If the lignite is dried at low temperature, the...

A survey of firms involved in lignite mining and/or conversion resulted in estimates of their expenditures to in-state entities. An input-output model was applied to estimate secondary and total impacts of the direct expenditures. Direct expenditures totaled $806.8 million for 2007 and were...

A survey of firms involved in lignite mining and/or conversion resulted in estimates of their expenditures to in-state entities. An input-output model was applied to estimate secondary and total impacts of the direct expenditures. Direct expenditures totaled $806.8 million for 2007 and were...

In this work, an experimental study of the gasification of lignite with various particle sizes was carried out in a pilot-scale (10 kWe) downdraft type fixed bed gasifier. The main objective of the study was to investigate the feasibility of the lignite as a fuel for downdraft gasifier and to...

In recent decades, utilization of exergy has spread to the fields of physics and engineering as a useful decision making tool. The ratio of energy to exergy in a substance can be considered as an indicator for the improvement of the energy efficiency of large scale energy systems. In this study,...

Lignite is a kind of low rank coal with high moisture content and low net heating value, which is mainly used for electric power generation. However, the thermal efficiency of power plants firing lignite directly is very low. Pre-drying is a proactive option, dehydrating raw lignite to raise its...

The performance of a Victorian brown coal with minimal pre-treatment was assessed in a solid oxide electrolyte based direct carbon fuel cell (DCFC) at 700 and 800°C. In order to evaluate the effect of inherent inorganic species in the coal on the electrochemical performance of DCFCs (voltage...

The cornstalk-assisted direct lignite liquefaction was conducted by using a resonance agitation micro-autoclave heated by a salt bath. The effects of reaction temperature (360°C, 390°C, and 420°C) and time (5min, 15min, 30min, and 60min) on the distribution and yields of liquefaction products...

Surface lignite mining covers large areas and usually generates social conflicts which pose one of several energy security threats to certain states. Therefore, defining the social conditions determines the success of a mining project. Two communes were chosen for a public opinion study:...

For the hypothetical deposit with parameters similar to KWB “Konin” S.A. conditions; lignite prices and proposed divisions are calculated and results were discussed under the angle of the fairness (equity) of the division and the possibility of their approval by both sides. A sensitivity...

Nanosized titanium oxide powder was prepared via the sol–gel process and characterized by transmission electron microscope. The effects of nano-TiO2 on combustion characteristics of lignite, desulfurization in combustion and the properties of ashes were investigated. The calorific value of...

Standard emission factors for the emissions of CO2, SO2 and NOx from uncontrolled fossil-fuel power plants are widely available in the literature for different fuels and boilers. These factors are usually referred to pure fuels with steady mean compositions. However, environmental, economical...

This paper advances a novel lignite-fired power generation process based on a OPSB (boiler with an open pulverizing system) and the recovery of water from mill-exhaust after the comprehensive analysis of the open pulverizing system used for high-moisture coals and heat/water recovery from boiler...

The water vapor adsorption properties of raw and hydrothermally treated fly ashes with NaOH and their application prospect as evaporative coolers of roof surfaces were studied. Initially, samples were characterized through techniques like elemental analysis, X-ray diffraction, thermogravimetry,...

The present study presents a three-dimensional numerical model for co-firing lignite and biomass in large-scale utility boilers. The model takes into account the non-spherical form of the biomass particle, which influences the drag coefficient and its devolatilization and combustion mechanisms....

Die Stromerzeugung in Deutschland wird sich in den nächsten Jahren grundlegend ändern. Dies ist nicht nur auf den Ausstieg aus der Kernenergie zurückzuführen. Vor allem werden die erneuerbaren Energien mit erheblicher Förderung weiter an Marktanteilen gewinnen. Die Braunkohle stellt bisher...

The catalytic hydroliquefaction of Xiaolongtan lignite (XL, a Chinese lignite) was investigated in a batch autoclave. The effects of reaction temperature, time and initial H2 pressure on the yields of gaseous and extractable portions (GEPs) were discussed. The catalytic activity of FeS+S was...

The behavior of liquefaction of Shengli (SL) lignite with methanol and CaO in the presence of FeS and tetralin (THN) was studied. The effects of reaction temperature and time on the liquefaction behavior of SL lignite with methanol and CaO were preliminarily investigated. The liquefaction...

The biosolubilisation of coal is a promising coal processing technology for converting solid coal to liquid oil at ambient conditions. In this study, the biosolubilisation of Chinese lignite was studied using a fungus isolated from decaying wood. The intensity of biosolubilisation was determined...

Turkey becomes more dependent on foreign countries for fulfilling its energy needs day by day. While 77% of the overall primary energy consumption in 1970 was met by the domestic energy sources, this percentage decreased to 28% in 2003. As for the electricity production, while 89% of the...