What are the different views on the nature of 'hellfire'?

Fire as understood by physical humans consumes and destroys the fuel that it ignites and then goes out. The unredeemed soul is what many religions teach will be tormented eternally in fire of hell. Given the concept of fire in physical world it seems that the fire that does not consume must be taken as not literal by our physical ability to comprehend but must mean something else and the scary pictures of Dantes inferno are artist conceptions based on physical understanding. I would like an **overview** of various hellfire beliefs as to what kind of fire torments the spirits that are said to be tormented in hell.