broker_url = 'amqp://guest:guest@localhost:5672//'

task_default_queue = 'default'
task_default_exchange = 'tasks'
task_default_exchange_type = 'topic'
task_default_routing_key = 'tasks.default'

task_queues = (
    Queue('default',   routing_key='tasks.#'),
    Queue('test', routing_key='test.#'),
)

task_queues is a list of Queue instances. If you don’t set the exchange or exchange type values for a key, these will be taken from the task_default_exchange and task_default_exchange_type settings.

$ celery worker -A main -l info -Q default -n defaultserver
$ celery worker -A main -l info -Q test -n testWorker

software -> celery:4.0.2 (latentcall) kombu:4.0.2 py:3.6.0
            billiard:3.5.0.2 py-amqp:2.1.4
platform -> system:Darwin arch:64bit imp:CPython
loader   -> celery.loaders.app.AppLoader
settings -> transport:amqp results:disabled

Queue: <class 'kombu.entity.Queue'>
broker_url: 'amqp://guest:********@localhost:5672//'
task_default_exchange: 'tasks'
task_default_exchange_type: 'topic'
task_default_queue: 'default'
task_default_routing_key: '********'
task_queues:
    (<unbound Queue default -> <unbound Exchange ''(direct)> -> tasks.#>,
 <unbound Queue test -> <unbound Exchange ''(direct)> -> test.#>)

app = Celery('test')
app.config_from_object('celeryconfig')

@app.task
def add(x, y):
    time.sleep(x)
    return x + y