03-10-2014, 01:19 PM
Abstracts: A fluid mixing apparatus for mixing a first fluid with a second fluid is provided.The fluid mixing apparatus includes a first housing, a second housing, a first actuator corresponding with the first housing, and a second actuator corresponding with the second housing.The first housing is provided with an inlet for supplying a first fluid such as water in the form ofsteam, and a nozzle outlet attached to a nozzle end of the first housing.The second housing is coupled to the nozzle end of the first housing and includes a inlet forsupplying a second fluid such a slurry. Amixing tube, which may be slidable, is contained withinthe second housing formixing the first fluid and the second fluid therein before passing the mixtureout of the second housing.Alternatively, collar member may be circumferentially mounted around a stationary mixing tubecontained in the second housing, or alternatively, around the nozzle outlet of the first housing.Depending upon whether themixing tube is slidable, or where collar member is mounted if utilizinga stationary mixing tube, a circumferential gap is created between nozzle outlet and the collarmember when the collar member is mounted on the mixing tube, and between the mixing tube andthe collar member when the collar member is mounted on the nozzle outlet.The sliding mixing tube or collar member is made adjustable via a second actuator which is capable of adjusting the sliding mixing tube or the collar member so as to narrow or widen the gapand to control the pressure of the second fluid introduced into the mixing tube.When aqueous dispersions of normal corn starch are jet- cooked under excess steam conditions, the properties of the final product depend on the manner in which the cooked dispersion is cooled. Phase separation of amylose and amylopectin dramatically alters the final properties, and the extent of phase separation depends on the processing history of the sample