HTP process
The high-temperature pyrolysis process (HTP process) is a thermochemical process that is mainly used to produce ethene and ethyne .
history
The process was developed and introduced by Farbwerke Hoechst . In 1975, however, the proceedings were discontinued for economic reasons.
Procedure
The HTP process enables ethene and ethine to be obtained. For this purpose, starting materials from methane to gasoline are thermally split at temperatures of 1500 to around 2300 ° C with a residence time of one to two milliseconds . The high temperatures are generated by burning fuel gas with oxygen or in an electric arc . The resulting ethene and ethyne must be cooled immediately below a temperature of 200 ° C to prevent further decomposition to carbon and hydrogen . For this purpose, the reaction product is quenched with starting materials . When using naphtha as raw material, the yield to ethene and ethyne is about 50-55% in the ratio range from 3: 7 to 1: 1, depending on the choice of reaction conditions.
In addition to the Hoechster HTP process, there are various autothermal high-temperature pyrolysis processes such as the Sachsse-Bartholomé process from BASF, as well as allothermal processes such as the electric arc process from Chemische Werke Hüls.
Individual evidence
- ↑ a b Gerhard Emig: Technical Chemistry: Introduction to Chemical Reaction Technology , Springer, 2005, ISBN 978-3540234524 , pp. 31–32.
- ↑ Acetylene plant. (No longer available online.) Archived from the original on October 16, 2015 ; Retrieved December 18, 2014 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
