Development of Honeycomb Methanation Catalyst and Its Application in Power to Gas Systems

Abstract

Fluctuating energy sources require enhanced energy storage demand, in order to ensure safe energy supply. Power to gas offers a promising pathway for energy storage in existing natural gas infrastructure, if valid regulations are met. To improve interaction between energy supply and storage, a flexible power to gas process is necessary. An innovative multibed methanation concept, based on ceramic honeycomb catalysts combined with polyimide membrane gas upgrading, is presented in this study. Cordierite monoliths are coated with γ-Al 2 O 3 and catalytically active nickel, and used in a two-stage methanation process at different operation conditions (p = 6-14 bar, GHSV = 3000-6000 h −1 ). To fulfill the requirements of the Austrian natural gas network, the product gas must achieve a CH 4 content of ≥96 vol %. Hence, CH 4 rich gas from methanation is fed to the subsequent gas upgrading unit, to separate remaining H 2 and CO 2 . In the present study, two different membrane modules were investigated. The results of methanation and gas separation clearly indicate the high potential of the presented process. At preferred operation conditions, target concentration of 96 vol % CH 4 can be achieved.

Separation Units 4.0 – Trennapparate heute und morgen

“…Dazu nennen Riese und Grünewald die Segmentierung von Trennkolonnen zur Erhöhung der Durchsatzvariation. Ein ähnlicher Ansatz wird für die Erhöhung der Flexibilität von Festbettreaktoren für Power‐to‐Gas‐Anwendungen beschrieben . Für beide Apparate führt die Segmentierung zu einem breiteren Betriebsbereich, wobei vor allem die Grenzen hin zu geringeren Durchsätzen aufgebrochen werden.…”

Coupling experiment and simulation analysis to investigate physical parameters of CO2 methanation in a plasma‐catalytic hybrid process

“…[20] Therefore, a high pressure is needed in the industrial process to increase the yield of CH 4 while preventing CO formation, carbon deposition, as well as catalyst deactivation. [21,22] Finally, the use of high temperature and pressure leads to high operating and investment costs, which slows down the development of conventional catalytic processes.…”

Optimal Low-Carbon Economic Environmental Dispatch of Hybrid Electricity-Natural Gas Energy Systems Considering P2G

“…Therefore, it is necessary to carry out the research on optimal operation of integrated electricity-natural gas energy systems considering P2G. The early studies on P2G are mainly focused on technology implementation and security application [6,[25][26][27][28]. Recently, although some achievements about optimal operation of integrated electricity-natural gas energy systems considering P2G have been achieved [6][7][8]24,[29][30][31][32][33][34][35][36][37][38], it still seems to be in the exploratory stage from the following aspects.…”