Gas process

Engineering

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Presentation HK 2013

At the Härtereikolloquium 2013 heat treatment congress we introduced our innovative development in endogas generation to a broad public for the first time.

With the aid of a new, fully automated endogas power control, it is possible to change the power in just a few minutes within the range 30…100%. This leads to a reduction in production costs, because the power is adjusted more quickly to the actual endogas consumption.

Implementation requires the following technical components: - Frequency inverter - Mass flow controller - Freely programmable control system

The frequency inverter controls the compressor and replaces the previous motor control valve. The interaction of the mass flow controller and freely programmable control system facilitate a stable dew point, also in the case of rapid power changes.

When the endogas system receives signals about the endogas requirement of the heat treatment plant, no pressure monitoring in the endogas supply line is then required.

If the endogas system is to be connected to more than one heat treatment plant, it is able to add or subtract the required volume of each separate consumer. The use of this technology enables the endogas system to adapt proactively to the actual endogas requirement.

We look forward to seeing our customers at the Härtereikolloquium 2014 in Cologne, and to welcoming them with further innovative ideas there.

Innovation: METHYGEN

Reduce energy consumption during the production of fission gas using special catalyst

The splitting of methanol, i.e. the extraction of the fission gas composed of 33 vol.% carbon monoxide and 67 vol.% hydrogen, is frequently carried out in heat treatment plants because the gas obtained in heat treatment is needed for carburisation and/or for hardening. The reaction is endothermic, and generally requires temperatures of some 1000°C.

The company Gebrüder Hammer GmbH in Dreieich near Frankfurt am Main has now developed the METHYGEN system which uses a special catalyst and therefore only requires a fission temperature of around 300°C. “A system like this has not been available until now,” says Managing Director Josef Hammer. In October the prototype will be put into operation in a large heat treatment system in Germany.

Hammer explains that METHYGEN produces significantly less soot formation, which constitutes a further advantage in addition to the lower operating costs and associated reduced maintenance costs. He also adds by way of reassurance: “The catalyst used contains no substances classified as carcinogenic.”

Another benefit for the heat treatment plant is that the splitting of the methanol takes place in an external system. This makes it possible to supply several heat treatment systems with the hydrogen and carbon monoxide mixture via a loop. The required consumption is controlled fully automatically.

With METHYGEN the medium-sized enterprise Gebrüder Hammer GmbH has once again achieved a technical innovation. The company has been designing systems for generating, purifying, drying and analysing technical and inert gases and gas mixtures for 35 years and supplies these throughout the 34 world. Around 30 systems are developed and produced each year. It has a production site based in Florstadt where systems are submitted to a stringent test run before delivery.