OPERATION & MAINTENANCE OF POWER PLANTS
FAST METHANE NUMBER DETERMINATION
The reliability and efficiency of combined heat and power (CHP) plants can easily be increased by rapid determination of the methane number. Florian Krischker shows some findings from a coastal power plant in Germany
A
ccording to the latest available data from Eurostat in 2019, heat production accounts for about half of total energy consumption in
the European Union (EU). Tis includes the use of energy for space heating, water heating and industrial processes that require heat. Reducing the carbon intensity of heat production is an important priority to achieve the EU’s climate and energy targets. In January 2020, Stadtwerke Kiel commissioned a gas-fired coastal power plant, replacing a 40-year-old coal-fired
power plant. Tis has reduced CO2 emissions by 70% and increased fuel utilisation to 90%. Te modular design gives the power plant a high degree of
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flexibility. Te output of the individual engines is adapted to the current energy demand. 20 gas engines in four blocks can be ramped up to a nominal electrical output of 190MW in less than five minutes. During operation, a thermal output of 192MW can be generated simultaneously. By comparison, the old power plant needed at least four hours to ramp up.
Te composition of natural gas in the
European grids has changed in recent years due to several factors. Te production and use of unconventional gas, such as shale gas, has increased. Tis gas often has a different composition than conventional gas and can vary depending on the source.
The correlative measuring device gasQS flonic in the control cabinet at the gas transfer station
In addition, supply countries have changed for economic and political reasons. Renewable gases such as biomethane and hydrogen are also increasingly used. All these points complicate the design of plants and shorten the time to adapt to the new circumstances. Daily or hourly values
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