for shelled on eggs, it seems like the only way to fully pasteurize them without coagulate the egg is through "Sous Vide":
https://norioonwine.blogspot.com/2014/05/sous-vide-and-home-pasteurization-of.html
http://www.seriouseats.com/recipes/2013/10/sous-vide-soft-poached-eggs.html