Flash Point Management
Pump (active) fed Light Ends Removal Kit
The use of a light ends removal kit helps remove volatile thermal oil components which are generated at high operating temperatures. Safe removal of light endsensures a more cost effective, clean, safe and efficient thermal fluid system. Regular thermal fluid testing and analysis will indicate when there’s a need for light endsremoval.
Light ends removal kits are specifically designed to manage your flash point by removing volatile light ends from your heat transfer system.
Key Benefits of Light Ends Removal Kits
Reduce downtime and extend the usable life of the thermal fluid
What Are Light Ends?
When the bindings of the hydro carbon chains break the short-chained light ends are produced. The higher the operating temperature, the more light ends are generated. The rate at which the light ends are produced is dependent on the oil type and the operating temperature.
Why Do I need to Manage Light Ends?
Light ends boil and ignite at lower temperatures and reduce the ignition point (flash point) of thermal fluid, this creates a fire hazard and you have a duty to manage this in line with DSEAR / ATEX Health and Safety Regulations.
Light ends also lead to cavitation in thermal fluid system pumps, which can lead to operational problems.
When light ends are produced your system and your workforce safety is severely compromised.
Removing Light Ends
The light ends removal kit is tailored to your heating system and the thermal oil you use. Light ends removal kits can be used on both large and small systems, which may be open or closed (with a nitrogen blanket) and used with both mineral and synthetic thermal fluids.
You can use the light ends removal kit for a fixed duration on a temporary basis (this is when using the active pump fed unit)
You can use the light ends removal kit as a permanent installation to manage light ends on a continual basis
Is this system suitable for my application?
- It can be fitted to any new and existing heat transfer system
- It can be used on large and small systems
- The active pump fed unit is skid mounted and mobile so it can be used on multiple systems within one site
- It can be used with or without a nitrogen blanket
- It can be used as an air-cooled or water-cooled system
- Venting can be automatic or manual
- Different distiller sizes are available for systems up to 100,000 litres
- It can be used in an active state (using a pump) or passive (using gravity)
- A level control and operator alert system are available for large systems
- The electrical control system can be stand alone or integrated into the PLC of the thermal fluid primary system – PLCs are Siemens S7300 or Allen-Bradley Compact Logix, both with 7” Touch panel
How does it work?
The light ends removal kit works when the hot thermal fluid flows through the distillation vessel and the gaseous light ends are collected in the liquid phase of the condenser. The light ends are either drained automatically or manually from the system. The system is not open to atmosphere as a hot expansion tank would be. This protects the oil against oxidation ageing.
Most light ends are generated in the hot flow line and the heater and, to a lesser extent, in the cooler return line. For typical thermal fluid heating systems using mineral oil and a temperature of 280°c the decomposition rate is 3.5% per year. For example – in a system of 30,000 litres of thermal fluid this is 1.000 litres per year.