IndaChlor - waste recycling unit

The investment in a turbine electricity producing system to recover energy in the new Chlorine Recovery unit in the port of Dunkirk


IndaChlor® will recycle hydrochloric acid from chlorinated waste streams from the PVC industry in their new waste recycling unit in the port of Dunkirk. 
Hydrochloric acid is used in the chemical, petrochemical, metallurgy and food industries.

They have made a conscious decision to build the plant near to Ecophos, a phosphates manufacturer that will use the hydrochloric recovered by IndaChlor® in its own production processes. The new facility has a 40,000 tonne capacity. The energy that is produced during treatment will be supplied to a nearby alcohol distillery. 

​The PECS project element is that of the turbine for energy production and energy recovery.

IndaChlor is looking for the optimal technical solution for the valorisation of the overall steam output of its process. All the steam will be directed to a steam turbine, partially in order to be valorised by producing electricity, while the other part of the energy is the steam that is sold as heat to an existing neighbouring company at their appropriate steam conditions


IndaChlor® is part of Indaver Molecule Management®, with which Indaver breaks industrial waste down, into its basic building blocks. New, high-quality products are then made from these building blocks. The facility is a textbook example of industrial symbiosis in the circular economy: Indaver is recovering high quality raw materials and sustainable energy from waste streams, which is then being re-used directly to make new products. Thus, Indaver is working on closing materials loops in a low-carbon and energy-efficient manner.​​
IndaChlor® will make the Port of Dunkirk's energy supply more sustainable: it will channel all the steam from the treatment into a steam turbine; part of which will then be converted into electricity for its own use and the rest of the steam will go to a neighbouring company. The knowledge gained from the PECS project could inspire other ports to make their energy supply more sustainable.


The energy produced during IndaChlor's treatment process will be recycled. All the steam from the recycling process will be directed to a steam turbine.

One  fifth will be valorised into electricity, minimum 1.000 KW, which will cover consumption of the plant when disconnected from the grid. The remainder (80 %) of the energy in the steam is sold as heat to an existing neighbouring company at their appropriate steam conditions via a pipeline.

This means that the company can stop using natural gas, because an alternative is delivered directly.

The steam turbine will be capable to convert the full steam flow into electricity in case no steam is consumed by the neighbouring company.

Watch this video to see the waste unit plans and workings in action:

Timeline and events

Indaver has now gone through the extensive approval procedure and the French government has issued an operating licence for IndaChlor®. In the meantime, preparatory works have begun on site. The new facility must be operational by the end of 2019.


  • Maximized recovery of materials + transport reduction by direct link​
  • maximized recovery of energy + fossil fuels avoided
  • Synergies with local partners = win-win for all + circular economy brought into practice