It's totally meaningless out of context.
Student or Learner
Peripatetic means walking about from place to place; travelling on foot.
But, the usage in the sentence "Never again would I be a peripatetic conflagration" doesn't seem to fit the bill. But, since it was taken from a book of adequate reputation, please assume it is correct. And kindly share your views on how you interpret this sentence. Any other unusual use of the word is also most welcome.
We not only need the context but the name and author of this "book of adequate reputation".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
(Not a Teacher)
Without context, all I can tell you is that the author seems to be intimating that he is no longer a wildfire.