Foam can occur in many processes in different applications but can also manifest itself later, downstream of the process - for example in discharge from vehicle washing stations or outlets, or from treatment works into river courses or coastlines. Here the foam may not develop until it is agitated by the flow downstream or by the constant churning of the surf. This means it may look fine before it leaves a works, but when out in the environment it can produce an unsightly pollution incident.
Hycontrol’s Foam Tendency Analysers (FTAs) are unique foam control systems that provide a pre-emptive (rather than reactive) approach to foam control. Operating fully automatically, the FTA measures the tendency of a liquid to create foam and can take action before foaming occurs. This is achieved by taking a sample from the process and analysing the foam tendency in a small test cell.
The FTA includes a series of pumps for sample handling. A fill pump is used to draw a sample from a process into the test cell. The sample in the test cell is analysed by sparging air through it to create foam, and the foam is then measured using a foam sensor. Once the measurement is complete the sample is removed by means of the drain pump, and returned to the process or discarded.
The system can be set to act as an early warning to detect foam before it occurs elsewhere downstream of the process. Alternatively, it can be used to simulate a process to indicate that foam is being generated.
A built-in error detection system prevents the pumps running if the sample is not flowing correctly; for example if the test cell does not fill then the system will generate an error alarm.
The FTA has been designed for minimal maintenance intervention and will operate for long periods without any attention. The test cell can be easily removed to rinse out any debris that builds up, when necessary. The FTA includes an anti-foam pump system to control the foam and can generate a signal to a process controller or an alarm.
|Note: All customers must ensure compatibility of wetted components with the intended application.
Hycontrol cannot be held responsible for any chemical incompatibility. Please refer to the datasheet for more information