Technology Unit

C₂ Hydrogenation (Front End Acetylene Hydrogenation System).
Tubular reactor with an almost isothermal reaction. all are present in the cracked gas.
C₂H₂ + H₂ → C₂H₄
C₂H₂ + 2 H₂ → C₂H₆ (Acetylene: 5000 ppm → 1 ppm).

Source: Y.A. Sastry & Uday Krishna Dy, DUAL FEED CRACKER UNIT & ASSOCIATED UNIT, ONGC Petro additions Limited (OPaL), Uploaded on 28^th Jan 2018 on SCRIBD.