Pennwalt Ltd. products

The Pennwalt Super-D-Canter Centrifuge is a specially developed continuous Solid-Bowl Horizontal Scroll Discharge centrifuge for effective separation of slurries into clarified liquid and dewatered cake solid phases, with the application of centrifugal sedimentation principle.

The Super centrifuge is a vertical high speed tubular bowl centrifuge, generating centrifugal force up to 20000 times the force of gravity. It is used either for continuous separation of two immiscible liquids having different specific gravities or for batch-wise clarification / polishing of liquids containing fine insoluble solids.

Vibroscreens are used either for wet solid-liquid separation or for dry solids classification.

A composite, reinforced hose is enclosed within a casing that is flanged at both ends. The flanges are connected to the suction and discharge lines of the system. Within the casing is a rotor with two pressing shoes at opposite points about its centre line and mounted on a shaft with two bearings. As the rotor rotates, the hose is totally compressed by the shoes and the product within the hose is pushed forward. At the front of the pump is a removable cover with inspection window and level indicator. The pump casing is filled to approx. half way level with a specially compounded (food grade) lubricant which functions as a coolant as well. The patented hose is constructed from rubber laminations with an internal reinforcement which ensures that compression forces are evenly applied across its full width.

Water treatment and many other technical processes frequently require the use of oxidising gases such as chlorine or chlorine dioxide. These gases are highly toxic and corrosive. Therefore special precautions have to be taken in areas where such gases are used.

The moment the Chlorine leak is detected by any of the sensors, the blower would start automatically sucking the Chlorine air mixture through the hood on leaking ton container and only air through the other hoods on the non-leaking ton containers or through the ducting laid in Chlorine Ton Container room. Simultaneously the caustic re-circulation pump would start working, taking the caustic solution from the tank and pumping it to the top of the tower. This caustic solution gets sprayed through the nozzles in the tower over the PP pall rings. The gas air mixture travels in the tower from bottom towards the top whereas the caustic solution travels from top towards the bottom. Hence with this counter current travel, the Chlorine gas gets neutralized by the caustic solution as the packed portion provides the required contact tank. The air discharging at the blower outlet is practically free of Chlorine gas.

The Pennwalt Series 50-200 Evaporator (sometimes called a "vapourizer") is an electrically heated immersed-tank-type heat exchanger. It is necessary wherever the rate of unaided gas withdrawal from multiple containers is not fast enough to keep up with requirements.

Chemical, bio-pharmaceutical, petro-chemical, food & oil industries require process equipment capable of withstanding very aggressive corrosive environments. Pennwalt has a team of internationally well trained lining technicians and applications engineers to carry out application of corrosion resistant fluoro-polymer coatings and application of corrosion resistant fluoro-polymer linings to Chemical Process Equipment such as to: