Energy Generation

Hydrogen-heated stenter frame for carbon-neutral textile production in the future

Saal B
Freitag, 13.09.2024, 09:25 - 09:50 Uhr

In this lecture, the development of a stenter frame working with new gas burners using different natural gas/hydrogen mixtures up to 100% hydrogen is presented. Drying and fixation processes are conducted with a hydrogen-heatable dryer on a technical scale after application of exemplary conventional finishing recipes and evaluated with regard to exhaust gas analysis (H2O, O2, NOX) and the resulting product quality. Operating parameters and emissions are recorded and analysed as input for scaling-up as well as for a climate footprint tool for the creation of a final ecological and climate balance sheet.

Maike Rabe (Hochschule Niederrhein)
For reducing the CO2 footprint in the textile coloration finishing sector, a rethink towards a carbon-neutral production and the use of sustainable energy sources is required. The usual operation of stenter frames with natural gas currently leads to considerable CO2 emissions worldwide, which can be reduced by the alternative use of hydrogen, which is converted through the use of electrical energy from renewable sources such as wind or solar (so-called green hydrogen, GH2). The joint project "WasserSTOFF" investigates the effects of using hydrogen or hydrogen/natural gas mixtures instead of natural gas alone as a fuel for textile drying and fixation. This requires the development and adaptation of the burners, including a gas mixing system, which control the thermoprocess. The mode of operation is initially tested and evaluated on a gas-powered and burner-modified technical dryer (power class max. 40 KW/burner) in the Textile Technology Center at the Research Institute of Textile and Clothing of Hochschule Niederrhein – University of Applied Sciences, whereby exemplary textile coating and finishing/dyeing processes will be selected for drying and fixation. In order to optimise the process and adapt the finishing recipes to the changed process parameters by using hydrogen for the burners, tests are carried out by evaluating the textile product quality, exhaust gas composition (by installing/using humidity and gas sensors for H2O, O2 and NOX) and energy balance. This is accompanied by the development of a dynamic tool to evaluate the climate footprint of the drying system, taking into account factors such as the availability and origin of the required quantity of hydrogen (including in-house production and development of the electricity mix for hydrogen production) as well as hydrogen admixtures in the natural gas network, all based on existing standards and the Greenhouse Gas Protocol. These figures form the basis for scaling-up the technology to industrial scale. The three-year WasserSTOFF project is carried out by A. Monforts Textilmaschinen GmbH & Co. KG in Mönchengladbach as coordinator in cooperation with PLEVA GmbH in Empfingen and Nova Textil-Beschichtung GmbH in Grefrath, as well as with scientific support from Hochschule Niederrhein – University of Applied Sciences (Institute for Energy Technology and Energy Management, SWK E2, and Research Institute for Textile and Clothing, FTB) in Mönchengladbach and the Institute of Thermal Engineering and Thermodynamics at Technische Universität Bergakademie Freiberg (TUBAF). The BMBF project “WasserSTOFF – Hydrogen in Textile Finishing” (03EN2087) is supported by the Federal Ministry for Economic Affairs and Climate Action (BMWK) on the basis of a decision by the German Bundestag.