According to one embodiment, a nozzle for introducing a fluid comprises a first conduit having a first end and a second conduit having a second end. The second conduit is disposed substantially concentrically with the first conduit. The first end is offset from the second end. A third conduit having...http://www.google.es/patents/US5601234?utm_source=gb-gplus-sharePatente US5601234 - Fluid nozzle and method of introducing a fluid
