We're specialized in
bulk handling solutions for petrochemical plants

The last 35 years Pneumix has designed all kind of equipment for optimising BULK handling of FCC Catalyst, Additives, fines or spent fines for FCC refiners.

Over 35 years
of experience

With close to 200 installations operational on 5 continents in 47 different countries you are in reliable hands with Pneumix Injection Units BV.




Years of experience


Installations operational





Our history


Founded, selling air compressors and air tools, plus sandblast vessels from the start.


Designed the first loader on behalf of UOP for French refinery. This loader was equipped with an electronic weighing controller and operator panel.


Pneumix designed its first multi ingredient loader enabling refineries to add additives and catalyst simultaneously.


Pneumix holding sells its cleaning and air tools business. Pneumix Injection Units continued as fully focussed catalyst and additive loader designer / manufacturer for FCC.


Sold more than 100 additive and catalyst loaders around the world.


Supplied almost 200 systems to 98 FCCU plants in 48 countries around the world.

Our method

1. Technical visit

Technical visits prior to the installation of the addition device to determine the optimal location of the P.A.I.S. units and design the proper connections to existing storage hoppers.

2. 3D Drawing

Based on the site visits or provided information Pneumix can provide 3D drawings to minimize engineering from the refiners side.

3. Technical discussion

Technical discussion and prepare offer that suits clients demands.

4. Testing

After official order the loader will be completely build and tested in Pneumix workshop.

5. On site supervision

In most cases refinery will install P.A.I.S. units with their local contractor. On request Pneumix can supply on site assistance / supervision during erection / installation.

6. Start-up and supervision

Start-up, commissioning and training of the operators and technicians on site.

7. Continuing support

Provide continuing support and maintenance for all clients to assure optimum performance.

8. Scheduled service visit

If interested we drop by for yearly scheduled service visits to perform preventive maintenance at your location.