I am assuming you are asking why would you freeze your coffee...
You would freeze it to lock the flavor in and keep it from going "bad".
As coffee ages it releases gases. These gasses are where the flavor is. The more you save (freezing) the better it tastes. This works to a certain point as it only slows the process and does not stop it. There is also discussion as to if the freezing process alters the taste of the coffee.
Yes, you can safely freeze coffee, in liquid form or in bean form, whole or ground.
There are plenty of crazy stories out there about chemicals added to freeze dried coffee. There is no reason for anything to be added to coffee when it is freeze dried; the entire point of freeze drying is that it preserves the product naturally. The process is: they make some coffee; they freeze it; they dry it. In short, whatever chemicals are in freeze dried coffee are only those - and exactly the same as those - found in "fresh" coffee.
Coffee typically takes about 2-3 hours to freeze in a standard home freezer.
A freezer!
Yes, coffee can freeze and still be safe to drink. Freezing coffee may alter its taste slightly, but it does not make it unsafe to consume.
6 minutes to freeze a coffee
folgers
Yes, you can freeze cold brew coffee for later consumption. Just pour it into an airtight container and freeze it. Thaw it in the refrigerator before drinking.
pagal
There are two main ways of producing instant coffee - freeze drying and spray drying. In freeze-drying, brewed coffee is frozen into granules, which are then placed in vacuum chamber, where the water sublimates (evaporates w/o liquifaction). In spray-drying, brewed coffee is sprayed in tower and dried by hot air in the matter of seconds. Freeze dried instant coffee advantage: higher quality product, better preserved flavor. Spray dried instant coffee advantages: faster and cheaper.
Yes, you can freeze iced coffee for later consumption. Just pour the coffee into an airtight container, leaving some space for expansion, and freeze it. When you're ready to drink it, thaw it in the refrigerator or at room temperature and give it a good stir before enjoying.
The main ingredient of coffee powder, or instant coffee, is coffee. It is the same as regular coffee, however, its caffeine quotient is affected by the process of freeze drying.