APPLICATION NOTE CXS DRY PUMPS VACUUM DRYING VACUUM DRYING Vacuum drying uses pressure reduction to remove moisture or solvents from a substance. Reducing the pressure lowers the boiling point of liquids, allowing the removal of vapours at reduced temperatures. Drying is usually a time-consuming process, so optimised solutions provide considerable savings in time, energy and costs. Vacuum improves the drying rate significantly for very dense products and is highly effective in the recovery of toxic constituents, valuable solvents or fragrances. It is essential for producing the low temperatures required to prevent degradation and improve product quality and viability. As experts in vacuum technology, Edwards has a full understanding of drying processes and the importance not only of pump sizing and selection for effective solids and liquid handling but also the challenges presented by corrosive, flammable, explosive and poisonous chemicals. Edwards CXS pumps are ideally suited to vacuum drying processes in the fine chemicals, food and pharmaceutical industries. They also offer significant advantages in processes used in plastics, ceramics, dyes, paint and pigments. They are available as standalone units or as complete systems in combination with booster pumps and accessories such as flame arrestors, knockout pots, condensers and filters. » Easy to install and control, quiet running, minimum maintenance » Just “fit and forget” • Simply reliable » Even in difficult and demanding environments, with excellent liquid and solids handling • Low cost of ownership » Low energy usage and utility costs • Robust » Pumps corrosive vapours without corroding • Environmentally friendly » No contamination of the process stream or cooling water » No effluent generation • Safety assured » ATEX certified for use in hazardous environments » Explosion-proof » Safe pumping of flammable gases • Outstanding support » From a global company famed for its best-in-class technology

APPLICATION NOTE PRESSURE CONTROL WITH A CXS AND PRESSURE TRANSMITTER (PT) CommunicaƟon hardware opƟon: - MCM Micro Tim - Ethernet - Profibus DP - RS232 OpƟonal DCS, Local Control Panel or Computer Any process vessel, e.g., a reactor PT Inlet valve Condenser with receiver Reactants + Product DisƟllaƟon or EvaporaƟon No expensive control valve CXS VACUUM SYSTEM PID 4-20mA Volt free circuit CLOSED when pump running µTIM PUMP READY Volt free circuit CLOSED when system at temperature and no warning present µTIM PUMP ALARM Volt free circuit CLOSED when no alarm condiƟons exit µTIM PUMP ON PROCESS Pump...

APPLICATION NOTE CXS MODULE OPTIONS: TO 1 SOLVENT FLUSH VESSEL ADDITIONAL MODULE OPTIONS: SOLVENT DRAIN • Local control panel • Additional mechanical boosters • Documentation packages COOLING WATER OUTLET FI-2 • Speciality chemicals • Pharmaceuticals and their intermediates MECHANICAL BOOSTER DRYING APPLICATIONS • Fine chemicals • System skid CONDENSER COOLING WATER INLET • Dust filter • Other control options COOLING COOLING WATER NITROGEN WATER INLET OUTLET INLET • Exhaust silencer • Pressure control valve Module 1: CXS pump with purges, inlet and outlet flame arresters, inlet valve, inverter,...

APPLICATION NOTE CXS FEATURES • CXS chemical dry pumps feature cutting-edge tapered • CXS chemical dry pumps are designed to be good at • An advanced temperature management system maintains • An integral controller, PID pressure control and safety screw technology. Smooth, gradual compression along the length of the rotor results in improved thermal control and optimised performance at all inlet pressures the pump temperature at programmable levels for optimal, repeatable process performance • The innovative design uses flooded air-gap potted, high efficiency motors. Integral drive and control...