Facebook account banned, how to unbanned my facebook account?

[D.G.]

You answered your own question. You posted porn. That broke the rules. You are still proud of it announcing that your friends liked it. If you want a facebook account you have to play by their rules. As to getting another account, they have no reason to trust that you won't try it again. You need to write to them and ask what conditions you have to meet for a new account. Find out if there is a period of time you are banned for or if once banned forever banned. Don't write to them asking why as you already know. Don't argue with them. Apologize and if you are reasonable rather than argumentative you will have a better chance. I'll look up some of their policies and see if I can find out more.
"Disabled for violating Facebook's Statement of Rights and Responsibilities
Facebook accounts that have been reported or detected for policy violations may be disabled by Facebook. Possible reasons include, but are not restricted to:

Posted content that violates Facebook’s Statement of Rights and Responsibilities (this includes any obscene, pornographic, or sexually explicit photos, as well as any photos that depict graphic violence. We also remove content, photo or written, that threatens, intimidates, harasses, or brings unwanted attention or embarrassment to an individual or group of people)

What if I didn't receive a warning before becoming disabled?
Depending on the severity of the violation, it is not guaranteed that you will receive a warning prior to becoming disabled. Unfortunately, accounts that are disabled for severe violations of Facebook's Statement of Rights and Responsibilities cannot be restored."
This is what I found at Facebook. I guess that means your account cannot be restored.