Facebook doesn't provide any specific on the rate limits now, and people often send about 15-30 friend requests a day.If your account is blocked from sending friend requests, it may be because friend requests you’ve sent have gone unanswered or been marked as unwelcome. In the future, you should send friend requests to people you have a real-life connection to (ex: friends, family, coworkers or classmates).With new accounts please add fewer friends at the beginning, then increase the number gradually along with the growing credibility of the accounts.