Abstract: The present invention corresponds to a gas cooling and condensing system using fluid energy and comprising a gas feed line, a first vortex tube connected to the gas feed line, a second vortex tube connected to the first vortex tube and a first heat exchanger connected to the second vortex tube and to the gas feed line. Said gas cooling and condensing system is a modular system, which may be replicated and connected in series or in parallel to another modular system to obtain a cooler or higher mass flow gas than that obtained with a single modular system. Moreover, the system of the present invention is optionally connected to thermal recovery, pressure recovery, recirculation or venting elements for the utilization of the waste gas streams. Furthermore, the system of the present invention does not require additional energy to that obtained from the pressure of the feed line for obtaining liquefied gas.

Abstract: The dissolution of Active Pharmaceutical Ingredients in polymeric melts plays an important role in the manufacturing of drugs that use polymers as excipients. The dissolution kinetics is essential for designing the processing equipment, describing the operating conditions, and defining material properties, for example, the appropriate API-polymer(s) pair. In one embodiment of the invention, the solubility of ketoprofen (KTO) in Soluplus®, Kollidon® VA64, Kollidon® SR and a combination of three; was analyzed under Hot Melt Extrusion (HME) processing conditions. Thermal characterization techniques show that a single phase amorphous solid solution (only one Tg) was achieved by HME at 120° C. and 70 rpm. The sample's stability was analyzed for 4 weeks and the single phase amorphous solid solution was maintained during that time. An extended release profile of KTO was achieved, releasing 100% of KTO in 12 h. The invention is particularly useful to target a specific release profile.