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The only one natural gas storage in Bulgaria - Underground Gas Storage Chiren requires modernization and development. A set of activities have been planned and implemented, covering research, technological and production activities. An overriding task and a top priority are to increase capacities - in volume and productivity of the storage. The aim of the research is to determine the necessary modern set of knowledge that will draw the attention of stakeholders to the possibility of modernization and increase the ...

Hydrogen production plays an important role in the decarbonization of energy used in all sectors. It can be used as an environmentally friendly raw material, fuel or energy carrier. According to Hydrogen Roadmap Europe (2019), the total amount of hydrogen used in the EU is 339 TWh. The largest share falls on the refining processes (153 TWh) and the chemical industry (for the production of ammonia and methanol - a total of 156 TWh). The highest quota has the refining processes (153 TWh) and the chemical industry (f...