Petro Faraz Iranian Company, acting as the chemical cleaning contractor, has successfully executed the acid cleaning process for the lube oil circuit pipelines of the compressors in Unit 103 at the 7th South Pars Refinery. The project was carried out from November 21, 2024, to December 20, 2024, commissioned by Setaregan Derakhshan Asaluyeh Maintenance & Engineering Company.
Technical Project Description
In the lubrication systems of centrifugal compressors, particularly within high-temperature refinery environments and complex hydrocarbon streams, the accumulation of suspended particles, oil oxidation, and the formation of metallic and carbonaceous deposits lead to reduced efficiency, line blockages, and an increased risk of damage to bearings and rotating components.
The primary objective of this acid cleaning operation was to eliminate organic and inorganic deposits from the lube oil circuit lines, enhance flow rates, minimize pressure drops, and restore the system’s original design conditions.
Technology & Operational Precision
Relying on advanced technical expertise, experienced operational teams, specialized mobile equipment, and absolute compliance with safety and environmental mandates, Petro Faraz Iranian Company completed this operation on schedule with entirely successful outcomes.
- Initial physical and chemical analysis of the scales present in the pipelines
- Development of the operational procedure in strict accordance with API standards
- Selection and injection of the chemical solution considering the allowable corrosion rate
- Continuous monitoring of temperature, pH, flow velocity, pressure, and contact time
- Execution of the neutralization, passivation, and final flushing processes
- Conducting wastewater testing, internal surface quality checks, and material integrity verification
Key Actions Taken
Initial physical and chemical scale analysis
Operational procedure formulation based on API standards
Controlled injection of customized acid solution
Real-time monitoring of temperature, pH, flow rate, and pressure
Comprehensive neutralization, passivation, and final rinsing
Internal surface quality testing and material damage assessment
Driven by deep technical expertise, highly proficient field crews, advanced mobile setups, and total commitment to safety and ecological standards, Petro Faraz Iranian Company successfully completed this project on time, yielding excellent, dependable parameters.