url = 'https://oauth.vk.com/blank.html#access_token=f9cc1f917c3ba191cd4279be2749'
      '4b6b5fba00e12ed71a6c790daf70ff9712cb8d195a875c7dea143f146&expires_in=86400&'
      'user_id=91585260'
params = url.split('#')[1].split('&')

token = {}
for i in params:
    x = i.split('=')
    token.update({x[0]: x[1]})

print(token)

{
    'access_token': 'f9cc1f917c3ba191cd4279be27494b6b5fba00e12ed71a6c790daf70ff9712cb8d195a875c7dea143f146',
    'expires_in': '86400',
    'user_id': '91585260'
}