Akzo Nobel UV Resins needed to improve their tanker unloading of Acrylic Acid so having used Flotronic Pumps for many years throughout their site asked if they could help. The solution was a HiFlo 710 Series pump, complete with Rupture Protection and Pulsation Damper. As a result, they saved at least one hour unloading, reduced blockages and achieved a greater flexibility of supply.
Part of the Akzo Nobel Group, the UV Resins site at Eccles, Manchester produce a wide range of resins, in particular UV/EB curing chemicals for coatings, inks and adhesives, marketed under the 'Actilane' trade name. Acrylic acid is very susceptible to overheating which can cause a violent polymerisation, which may result in serious injury and/or loss of property. If using either centrifugal pumps or positive displacement pumps, which if 'dead headed' results in a temperature rise, then these must be protected with a temperature sensor and instrument interlocks.
However a better solution is to use Air Operated Double Diaphragm pumps, which if 'dead headed' will stop pumping, thus avoiding expensive and complicated instrument interlocks, resulting in a much safer application.
The Flotronic 'One Nut' fast maintenance 2" 710 series pump, constructed in 316 stainless steel with Virgin PTFE diaphragms unloads at a rate of 12 tonnes/hour of acrylic acid at a temperature of 17-25°C and a viscosity of 50 centipoise. It has a flooded suction and pumps the acid to two 30 tonne storage tanks with 5 metres head.
The pump is fitted with the unique Flotronic Rupture Protection system, which consists of a secondary back up diaphragm behind each working diaphragm, creating an intermediate safety chamber. Should the working diaphragm rupture, these protect the pump air system from damage and contain the liquid within the pump. Tappings are provided to enable a signal to be sent to the control panel to alert the operator to the rupture so that he can either finish the pumping or shut the pump down.
The Pulsation Damper is fitted to reduce pulses which could cause pipework damage and/or upset instrumentation. The FPL dampers remove over 95% of pulses and are also fitted with the Rupture Protection System. John Warren – Process Engineer comments "FPL pumps have proved very reliable in the past, and we particularly like the simplicity and ease of maintenance."
- Acylic acid
- Flooded suction Viscosity 50 cp
- Flowrate 12 tonnes/hr