Being that your keyboard was damaged by the liquid, it will HAVE to be removed. Removing a laptop keyboard is by no means a difficult process. Usually it involves maybe a half dozen screws and 1 or 2 ribbon cables connecting it. Google your laptop make/model and try and find a tutorial on it.
The keyboards themselves are generally inexpensive. eBay is a good source for replacements. Just search the make/model of the laptop, or after removing the keyboard, search the part #.
You need to make sure the liquid hasn't gotten further into the laptop. Removing the keyboard will allow you to visually inspect the inside of the laptop for more liquid. If there IS, further disassembly might be necessary. Just because you dry the liquid, doesn't mean the problem goes away. Drinks contain sugars that turn into a sticky goo when they dry out. This goo conducts electricity. It needs to be cleaned out, not just dried. The keyboard is usually just a "replace and forget", since most laptop keyboards are virtually impossible to disassemble and clean. And at $20-$30, why bother? If i were you, i'd remove the keyboard, check for further liquid damage. If the laptop itself is dry and clean, try and boot it with no keyboard. If you have a USB keyboard, plug it in and use it. If you don't, it's fine. Just remove it and boot it up. If it still acts weird, shuts down, etc, you might have more problems. The beeping will most likely go away, since your keyboard is obviously experiencing a "stuck key" condition. Post results and we can go from there.