This tutorial about the steps required to block app request received from friends on Facebook. Are you annoyed with repeated app requests received from your friends then you can follow the below mentioned steps to block the requests.
Login to Facebook and select Privacy Settings under Home menu.
In the Privacy Settings page, navigate to Block App invites section.
Now enter the name of friend(s) from whom you do not want to receive the app invites. The blocked friends name would appear below the Block invites section. And if you want to later remove the block request then click the Unblock link next to the friend’s name.
You can also block invites from specific friend by clicking the Ignore All invites from this Friend link under the received request.