I think Hell is the eternal separation between God and us. It would be like seeing God face to face, and Him saying to you, “You are an embarassment to me. I will stand you no longer. I have extended every mercy and kindness to you, and you have always chosen to slap my hand away. I have offered you everything I have, and you have disowned me. I will, therefore, disown you.”
The eternal fire would then be, rather, the burning sting of shame. And you have to endure this shame for eternity.
O, my Jesus, save us from the fires of Hell, and lead all souls to Heaven, especially those in most need of thy mercy,