Abstract
In this review, the general concepts of chemical energy transport processes are discussed. The particular case of the NFE (long-distance energy transport) system, the ADAM and EVE project, is described and results obtained from the ADAM 1 pilot plant and related experiments are reviewed. The methanation pilot plant, ADAM I, fed with about 600 m 3 h −1 (STP) dry synthesis gas from the reformer pilot plant EVA I, has been in operation for 1500 h. In the first adiabatic fixed-bed reactor of the plant, the temperature increase was controlled between 300 and 600°C by product gas recycling during the test run which is described and to between 300 and 700°C in other test runs. The shift of the reaction zone during the operating time of 1500 h was negligible but the length was influenced by changes of gas velocity. Standard activity tests of used catalysts in separate equipment at low temperatures (200–300°C) showed a loss of catalyst activity with respect to methane production compared to the fresh catalyst, but the activity remaining was sufficient for stable operation of ADAM I.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have