October 2018

Maintenance and Reliability

Fouling mitigation strategies for process gas compressors in olefins plants

Indorama Eleme Petrochemicals’ olefins plant in Port Harcourt, Nigeria is designed to produce 300,000 tpy of polymer-grade ethylene and 126,000 tpy of polymer-grade propylene through the pyrolysis or thermal cracking of natural gas liquids (NGL).

Eteng, O. C., Indorama Eleme Petrochemicals Ltd.

Indorama Eleme Petrochemicals’ olefins plant in Port Harcourt, Nigeria is designed to produce 300,000 tpy of polymer-grade ethylene and 126,000 tpy of polymer-grade propylene through the pyrolysis or thermal cracking of natural gas liquids (NGL). The NGL is first fractionated in a column where C2–C4 hydrocarbons are recovered at the column overheads and sent for cracking in the pyrolysis furnaces, while C5+ hydrocarbons are the column bottom product, sent to offsite facilities for storage. However, due to NGL feedstock supply constraints that adversely affected capacity utilization, the olefins plant was modified in 2009 to handle liquid cracking of C5 obtained from the NGL fractionation col

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