Σάββατο, 29 Απριλίου 2017

Το λιγνιταέριο, νέα ενεργειακή λύση; Του Ν. Στεφανή


 
Γράφει ο Νίκος Στεφανής
 
  Mετά το δημοσίευμα μου «Λιγνίτης-κατέρρευσε το δόγμα το «των γεμάτων αυλών» προχώρησα ...
 
 
 
Globek Stefanis: Underground coal gasification – world experience and
experiments performed in experimental mine Barbara
Abstract

The idea and objectives of underground coal gasification process is presented. World experience
in the past and particularly in the present state as well as plans of companies dealing with UCG for the
future is shown. The plans of work in the UCG in different countries are shortly described and
discussed. The aims and a short description of project cofounded by RFCS, titled Hydrogen Oriented
Underground Coal Gasification for Europe (HUGE) is presented. Results of the project, from ex-situ
reactor constructed for simulation underground conditions are presented and discussed. Also some
432
results from underground trial are presented. The trial performed in underground seam was successful
and we learned how to control the process safely, how to chose gasification media and how influence
on the quality of gas composition. The experiment has been performed in dammed space. The obtained
gas product of heating value 2.5–10 MJ/m3 was combustible during the whole sixteen days experiment.
It was found that there is possible to obtain up to 40% of hydrogen in UCG process. The most
important issues in UCG are safety problems (avoiding of gases explosion) and environmental issues
(mainly water contamination).
KEY WORDS: coal, underground gasification, experiments, technologies

Δεν υπάρχουν σχόλια: