1. Bygone emblematic device from Byzantium preserved (7)
13. Student of prison management taking case from prison wine expert (11)
22. I’m to go up trail: it’s rainbow-coloured (10)
Thanks, Hankir. I have/had an answer for 13 A, but my parsing is likely to be wrong. It ends in the usual 'expert' ending, involving 'ology' stuff. That might help ...