STOCKMEIER Holding GmbH, Bielefeld
Am Stadtholz 37
33609 Bielefeld

+49 521 / 3037-0
+49 521 / 3037-159

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Refrigerants in air conditioning

Refrigerant Recycling

A unique and safe process

Return and reprocessing of fluorinated refrigerants

Safe utilization of ozone-damaging CFCs

The use of CFCs as refrigerants in air conditioning systems and refrigerators has been prohibited since 1995 due to their ozone-damaging properties. Despite this, many old devices containing CFCs are still in use. This makes proper disposal that much more important when these devices are taken out of service.

In cooperation with the Daikin Company, we practice a unique method of CFC recycling. Hydrofluoric and hydrochloric acids are recovered while guaranteeing safe and environmentally responsible disposal of waste.

Our process for recycling ozone-damaging refrigerants is unique. In cooperation with Daikin, we offer a comprehensive recycling system for CFCs and FCs. The process is recommended by the United Nations Environmental Program (UNEP), among others

What are CFCs?

Good to know

The acronym CFC stands for chlorofluorocarbon. These are hydrocarbons in which the hydrogen atom has been replaced by the halogens chlorine and fluorine. CFCs are very persistent, odorless and colorless, often harmless and are only slightly toxic.

Because of their properties, CFCs were very often used as refrigerants in refrigerators and air conditioning systems, as aerosols in spray cans, as propellants in foaming agents and in fire extinguishers.

Their low reactivity, however, means that CFCs have a long residence time in the atmosphere. They climb into the stratosphere, where they are broken down by UV radiation. This releases chlorine and fluorine radicals, which then react with the ozone layer and damage it.

Our recycling concept for refrigerants

Refrigerants recycling procedure with Daikin

In cooperation with Daikin Refrigerants Europe GmbH, we practice a unique method of CFC recycling in Frankfurt and Goch. In this way, we recover hydrofluoric and hydrochloric acids while guaranteeing safe and environmentally responsible disposal of waste. Our recycling method for ozone-damaging refrigerants is a unique feature and is recommended by the United Nations Environmental Program (UNEP).

In addition to providing the containers, transporting them and taking care of the official documentation, we handle the logistics and the thermal splitting to aqueous hydrofluoric and hydrochloric acid on behalf of Daikin Refrigerants Europe GmbH. A special service department at Daikin Refrigerants Europe accepts larger quantities from existing facilities.

Benefits to you

  • Integrated + environmentally protective procedure
  • Recycling to hydrofluoric and hydrochloric acid
  • No escape of unburned CFC into the atmosphere
  • Safe + sustainable recycling of refridgerants

Recycling takes place in a two-step process

1. Processing at RCN Chemie in Goch

Our treatment facility (pressure column) first releases the CFCs from the oil. Next, the acid and water content are adjusted to the needs of Daikin’s separation facility.

Next the goods are sent to Frankfurt in safety containers for further processing.

2. Daikin cracking facility in Frankfurt

At over 2,000 °C, the CFCs are fully broken down through cracking. This yields high-quality, marketable hydrofluoric and hydrochloric acids. This procedure guarantees safe, environmentally sound disposal. This then prevents the escape of ozone-damaging CFCs, i.e. the release of unburned CFCs, into the atmosphere. 

  • R11
  • R12
  • R22
  • R134a
  • R407c
  • R407f
  • R410a
  • R507a
  • R404a (generally up to 16 bar)
Ice cubes

Service & Support


RCN Chemie

Ulrich Johann
Head of CFC / CHCs

+49 151 / 126 268 90