Paper details

Title:

Biogas Upgrading Field Tests with a Solid Amine Sorbent TSA-bench Scale Unit

Author(s):

Sonnleitner, E., Pirklbauer, J., Fuchs, J., Schöny, G., Hofbauer, H.

Document(s):

Abstract:

This work presents the first experimental results from biogas upgrading field tests using a continuous TSA solid amine sorbent CO2 capture process. Three different experiments have been conducted to assess the capture performance, the upgrading quality as well as the impact of H2S on the sorbent material. The experiments delivered a proof of concept for the proposed CO2 capture process and the considered application in biogas upgrading. By recycling part of the treated biogas, upgrading to a remaining 2%vol of CO2 in the treated biogas stream could be achieved (i.e. maximum allowable concentration for injection into natural gas grid in Austria). Furthermore, as trace amounts of H2S were found in the desorber off-gas, it was concluded that H2S adsorbs on the utilized amine adsorbents regardless of the high CO2 partial pressures present in the raw biogas stream. However, H2S adsorption did not seem to have a significant impact on the CO2 separation performance of the process. The obtained results highlight future efforts that need to be taken in the development of suitable sorbent materials and reactor system designs to strive towards a commercial applicability of the developed TSA biogas upgrading technology.

Keywords:

biogas, CO₂ capture, gas cleaning, upgrading, renewable energies, absorbent

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Anaerobic digestion for biogas and biomethane production

Event:

27th European Biomass Conference and Exhibition

Session:

2CV.8.27

Pages:

971 - 978

ISBN:

978-88-89407-19-6

Paper DOI:

10.5071/27thEUBCE2019-2CV.8.27

Price:

FREE