Depend if the pressure in the blowdown is 5 psig higher than the suction pressure you can used the wet gas compressor 

Reliance is recovering gases normally sent to flare from the blowdown system with ejectors. See document in the link below.
 
Regards,
 
CG

yes,  since 2006,  been operating 2 screw compressors on the flare system and sending them back to the gas plant

Is there any other coker, besides Reliance Jamnagar in India, using ejectors to recover coke drum vents to blowdown?
 
What’s the lowest pressure can get at coke drum before venting to atm., after quench, without using ejectors at blowdown?