Abstract: A method and system for blending natural gas liquids into liquid hydrocarbons may include using multiple blending tanks with internal mixer eductors, a plurality of analyzers, and, optionally, a recirculation tank, wherein natural gas liquid may be added into the system at each blending tank, creating a more accurately mixed final product.

Abstract: The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.

Abstract: The apparatus is used for the cooling and/or condensation and/or aeration and/or mixing of water. The apparatus has a shaft and a propeller to withdraw water from below and feed the water upwardly. The propeller is surrounded by a pipe through which the water withdrawn by the propeller flows upwardly. The inner diameter of the pipe is considerably larger than the diameter of the propeller, a flange to guide water to the sides, and a motor that rotates the propeller.