The Formox process
Formox formaldehyde plant range

The Formox process

No other process gives you as much formaldehyde (or UFC) per ton of methanol. Since methanol is the chief cost of formaldehyde/UFC production, the Formox process means superior overall economy.

The process enables the production of concentrations above 55%, which means reduced costs of downstream production, storage and transport.

There’s much more.

How it Works

This drawing gives you a rough idea of how the Formox® process is configured.

There are of course many variations, different capacity range and setups to meet different customer needs. But the principle is always the same: the most HCHO out of the least MeOH!

Advantages of the Formox process

What makes the Formox process the single most widely used formaldehyde process in the world today? The list below covers some of the principal benefits.

- designed & supplied based on in-depth understanding of process, plants & catalysts 
- superior yield 
- high formaldehyde concentration (above 55%) 
- low MeOH content in the product 
- high steam production 
- high level of safety 
- environmentally friendly 
- simple, reliable operation 
- low total operating costs 
- quality equipment at a competitive price 
- fast, on-time delivery 
- strong technical support & service 
- simple and reliable UFC adaptation

Typical Performance Figures

Our active R&D has led to constant improvement in plant performance. The figures you see here are actual performance figures that are typical for today’s plants operating with the Formox process. We don’t quote theoretical fantasies!

Typical performance figures 
(based on 37 wt-% concentration)


Per metric ton

Per 1 000 lbs




Electricity (for blower)   

30-70 kWh

15-30 kWh (2)

Cooling water

35 m3

4 200 US gal


0.03-.0.5 kg


Steam produced (4)

7 500 kg

7 500 lbs

Steam pressure

12-22 bar g

174-319 psi

(1) Molar yield of 92.6-93.7% (15.55-15.75 lbs/US gal @ 60ºF).

(2) Range covering different power saving options and age of catalyst.

(3)  20,000-30,000 kg (lbs) of formaldehyde per kg (lb) catalyst, depending on operating conditions.

(4) Saturated steam - steam can be exported as an option.

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