Abstract: The present invention relates to a continuous dynamic mixing assembly comprising a pump assembly for motivating a fluid material into a mixing chamber and substantially preventing reverse flow of gas and/or fluid material and a continuous dynamic mixing chamber assembly for efficiently treating fluid material, the continuous dynamic mixing chamber comprising a cylindrical inner wall, elongated baffles coaxially extending along the major portion of the length of the inner wall, porous inserts for introducing gas into the mixing chamber and a multibladed agitator.

Abstract: A compact, heavy duty mixer-reactor is described which features a double-stage mixing/reaction chamber, one stage being of wall-baffled design and the other being unbaffled. Said mixer-reactor operates with a unique, two-stage impeller having a different set of coextensive agitator blades within each of said stages. For example, the effective radii of the blades in said unbaffled stage are significantly larger than those of the blades in said baffled stage. In addition, other differences in shape and pitch of the respective sets of agitator blades are provided to give enhanced performance, particularly in mixing and reacting finely divided solids with gases. The subject apparatus delivers outstanding results in terms of expediting thorough mixing and promoting complete reactions between fine solids and gaseous reagents. These results are particularly noteworthy when treating non-Newtonian suspensions of solids and liquids (e.g.

Abstract: Improved mixing equipment of the wall-baffled, cylindrical, mixing-vessel type is provided. The novel baffles employed have a uniform cross-sectional form corresponding generally to a small geometric segment of a circle, the radius of which circle is substantially equal to that of the inner wall of said mixing vessel. A plurality (e.g., 2 to 4) of such baffles mounted at uniformly spaced locations around the periphery of said inner wall are employed together with a concentrically located, multi-bladed impeller capable of providing good axial and radial mixing within said vessel.The subject mixing equipment can deliver outstanding performance in terms of speed and completeness of mixing, as well as economy in power consumption and peak power requirements. Results are especially noteworthy when the equipment is used to mix chemical reagents (gaseous or liquid) with thick, non-Newtonian suspensions of solids and liquids; e.g., wet wood pulps and similar compositions containing fine, fibrous solid matter.