Impact of Feed Properties and Operating Parameters on Delayed .Impact of Feed Properties and Operating. Parameters . (VCM). • Hardgrove grindablity index (HGI) . Increases green coke hydrogen content. • Rules of . coke type. • High Asphaltene feeds producing coke of 8-9% VCM may have. HGI < 30.effect of vcm and hgi on green coke properties,Thermal Cracking – Delayed Coking - CIA Inspectiontypes are commonly parafﬁnic and result in low . VCM and HGI have strong cor- . feed may enhance anode coke properties, if cok- .. Green high-ash, high-.comparison of fuel properties of petroleum - Argonne National .Green (raw) petroleum cokes are mostly used as utility fuels (about 73% . Typical composition of the delayed coke is: on dry basis, 90% carbon, 4% hydrogen, 4 . mixture and is carellly controlled conducting test bum due to detrimental effects of high sulfur . 15,350 Bru/m (HHV), and 61 hardgrove grindability index (HGI).
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