🇮🇶 Baghdad, Iraq · Completed 2023
Power-resilient Baghdad sunflower pressing and semi-continuous refinery — engineered to handle 6–12 hour daily power outages with ATS generator switchover in under 15 seconds.
Industrial sunflower oil plant in Baghdad Iraq, large pressing machinery, generator backup visible, Arabic-labeled control panel, workers in protective equipment, Middle Eastern industrial photography, yellow sunflower oil
A Baghdad-based edible oil company sought to end its dependence on imported refined sunflower oil by establishing a local pressing and refinery operation. Iraq's Mosul and Kirkuk governorates produce over 200,000 tonnes of sunflower annually — yet most Baghdad cooking oil retailers were still importing.
The primary engineering challenge was not the oil processing technology itself, but the Baghdad power infrastructure: 6–12 hours of daily grid outages, voltage fluctuations of ±15%, and 50 Hz frequency instability — conditions that destroy unprotected VFD drives and PLC systems within months.
Baghdad's power grid (ELDC network) experiences chronic generation shortfalls. Industrial areas receive priority but still face regular interruptions. Standard oil plant controls — VFD motor drives, PLC systems, temperature controllers — are vulnerable to voltage spikes during grid reconnection events. Previous failed plant installations in Iraq had suffered PLC burnout and motor failures from unprotected power switching.
SinoOil designed a three-layer power protection system: a 200 kVA Perkins diesel generator with automatic transfer switch (ATS) providing switchover in under 15 seconds on grid failure; a 100 kVA automatic voltage regulator (AVR) stabilizing supply to ±2% regardless of grid fluctuation; and a power factor correction capacitor bank reducing generator load and improving motor efficiency. All VFD drives were specified at 480V-tolerant rating for added resilience.
For the refinery, a semi-continuous design was selected: 5-tonne batch neutralising (appropriate for variable Iraqi sunflower FFA 0.5–3%) combined with continuous bleaching and packed-column deodorizing. This gave higher throughput than full batch at lower capital than full-continuous, with the flexibility to handle variable crude quality from different Iraqi growing regions.
| # | Equipment | Model | Specification / Notes |
|---|---|---|---|
| 1 | Cleaning Screen | TQLZ80 | 80 TPD capacity; removes dust, stones, straw from sunflower seed |
| 2 | Magnetic Separator | TCXT25 | Removes ferrous metal tramp; protects press barrels |
| 3 | Sunflower Dehulling Machine | BTL-800 | Centrifugal impact dehulling; increases kernel oil content before pressing |
| 4 | Air Separation (hull/kernel) | — | Aspirator separates hull from kernel after dehulling |
| 5 | Conditioning Cooker | LYZF1.0 | Adjusts moisture and temperature of kernel before pressing |
| 6 | Screw Press (×8) | 6YL-160 | 50 TPD combined capacity after dehulling; 480V-tolerant motors |
| 7 | Plate Filter | BASY-500 | Crude oil filtration before refinery |
| 8 | Crude Storage (×3) | 5T tanks | Buffer between pressing and refinery sections |
| 9 | Batch Neutralizer | 5T batch | NaOH neutralizing; variable caustic concentration for Iraqi sunflower FFA variability |
| 10 | Continuous Bleacher | — | Adjustable bleaching earth dosage 0.5–2% |
| 11 | Packed Column Deodorizer | — | Continuous; 240°C; steam stripping for light colour and neutral taste |
| 12 | Niagara Filter (spent earth) | — | Removes spent bleaching earth from bleached oil |
| 13 | Vacuum System | 2BV-5161 | Water-ring vacuum pump for deodorizing section |
| 14 | Steam Generator | WNS-1T/h | 1 tonne/hour steam for deodorizing and heating |
| 15 | Diesel Generator (Perkins) | 200 kVA | Primary backup; Perkins engine; diesel-fuelled; local service network in Baghdad |
| 16 | Voltage Stabilizer (AVR) | 100 kVA | Automatic voltage regulator; stabilizes supply to ±2%; protects PLCs and VFDs |
| 17 | ATS + PFC Capacitor Bank | — | Auto transfer switch: <15s switchover; PFC improves power factor to 0.92+ |
"Baghdad power is unpredictable. Any plant that cannot handle power cuts will fail here. The ATS system SinoOil installed switches to generator in 12 seconds — our operators barely notice. The Arabic SCADA makes operation easy. We are expanding to 100 TPD next year."— Technical Director, Baghdad, Iraq | November 2023
Power-resilient oil plant design requires three layers: (1) Diesel generator sized at 110–120% of peak plant load with an automatic transfer switch (ATS) detecting grid failure within 2–5 seconds and achieving full switchover in 10–20 seconds. (2) Automatic voltage regulator (AVR) to stabilize voltage fluctuations common in developing-country grids — protecting VFD drives and PLC systems from voltage spikes and dips. (3) Power factor correction (PFC) capacitor bank improving power factor from typically 0.6–0.7 to 0.9+, reducing generator kVA requirement and motor heat. The ATS must support bidirectional switching to prevent dangerous backfeed when grid recovers.
Iraq grows sunflower in the Mosul, Kirkuk, Salah ad-Din, and Diyala governorates with estimated annual production exceeding 200,000 tonnes. Local Iraqi sunflower typically has oil content of 42–48% depending on variety and growing conditions. Processing local seed eliminates import duties and logistics costs compared to crude oil importation. Seasonal availability (harvest August–October) requires planning for adequate seed storage. Many Iraqi processors blend local and imported sunflower seed to maintain year-round continuous operations and consistent quality.
A fully-continuous refinery processes oil in uninterrupted flow through all stages simultaneously — optimal for high throughputs of 100+ TPD with consistent crude quality. A semi-continuous (semi-batch) refinery uses batch processing for initial chemical stages (degumming, neutralizing) combined with continuous processing for later stages (bleaching, deodorizing). At 30–80 TPD, semi-continuous is typically optimal: lower capital cost than full-continuous, higher throughput than full-batch, and flexibility to handle variable crude oil quality — particularly valuable when processing locally-sourced seed with variable FFA from different growing regions or seasons.
Oil mills contain many inductive loads (motors, transformers, solenoids) that cause lagging power factor, typically 0.6–0.75 without correction. Power factor correction (PFC) capacitor banks bring power factor to 0.90–0.95. Benefits include: reduced electricity bills (utilities charge penalty tariffs for low PF), smaller required generator kVA rating (a plant needing 150 kW at PF 0.65 requires 230 kVA generator; at PF 0.92 it needs only 163 kVA — saving approximately 30% on generator capital cost), reduced cable current losses, and lower motor operating temperatures extending equipment lifetime significantly.
Iraq's edible oil wholesale market operates primarily through Baghdad's central wholesale districts, with major distribution hubs in Basra (southern Iraq), Erbil (Kurdistan Region), and Mosul (north). Refined sunflower oil is the dominant cooking oil nationally. Local refiners typically sell to wholesale distributors who manage retail distribution under their own brand or private label. Iraq also has significant re-export trade to Syria and Jordan. Branded retail packaging (1L and 5L PET bottles) commands a 15–25% premium over bulk supply. The Kurdistan Region (Erbil, Sulaymaniyah) represents a particularly strong market for quality-conscious branded sunflower oil.
Operating in a challenging power environment? We design oil plants that keep running through grid failures, voltage fluctuations, and fuel supply interruptions.