Soybean · oil 18-22% · phospholipids 1.8-2.5% · lecithin recovery
Bean oil only 18-22% — 90%+ of global capacity is hexane extraction. Hydraulic fits non-GMO/organic cold press, lecithin-led P&L, pilot lines, and regional meal+oil mills where identity and meal protein 44-50% beat residual-oil ≤1% economics.
Start from hard data, not tonnage: oil 18-22%, phospholipids 1.8-2.5% (must degum), meal protein 44-46% or 48-50% dehulled. Hot: crack 4-6 pieces → cook 80-85°C / moisture 10-12% → 200-325 ton, residual oil 6-8%. Cold: ≤60°C on 355-500 ton, residual oil 12-15% for premium identity oil. Hydration degumming recovers concentrated lecithin (≥60% phospholipids). Only after pretreatment depth, lecithin path, and meal offtake are clear does press selection become useful.
Why Soybean
Soybean oil content is only 18-22% — far below peanut or rapeseed — so residual oil after hydraulic pressing stays 6-15%. Hexane extraction leaves ≤1% residual and dominates global capacity because meal revenue is the real commodity P&L. Hydraulic makes commercial sense only when the buyer is buying something solvent plants do not sell well: non-GMO/organic identity, cold-pressed health oil, food/pharma lecithin recovery, pilot recipes, or regional meal + oil for local feed and retail. State that business model before sizing presses.
Hot hydraulic soybean: clean → crack to 4-6 pieces (break rate ≥95%, fines ≤5%) → optional dehull (hull 7-9%) → steam cook at 80-85°C with moisture 10-12% for 30-40 min → 200-325 ton press. Residual oil 6-8%. Below ~75°C protein does not soften and yield drops; above ~95°C oil darkens and phospholipids become harder to hydrate. Cold route keeps material ≤60°C on 355-500 ton presses: residual oil 12-15%, more native vitamin E and undenatured phospholipids, sold as premium cold-pressed soy oil. Either route must degum crude oil: hydration at ~90°C with 2-3% soft water, centrifuge, dry wet gums to concentrated lecithin (≥60% phospholipids).
Whole beans, non-GMO or organic lots need certificates. Hull 7-9% of bean weight. Impurities target <0.1% after cleaning. Moisture at intake typically 10-13%; condition to 10-12% before hot pressing.
Crack to 4-6 pieces (break rate ≥95%). Hot: cook 80-85°C / moisture 10-12% / 30-40 min. Cold: gentle soften ≤60°C only. Optional dehulling raises meal protein from 44-46% to 48-50%.
Hot: 200 ton (~160 kg/barrel) or 300/325 ton (100 kg/barrel, 30-40 min), residual oil 6-8%. Cold: 355-500 ton series, ~2 h/barrel, residual oil 12-15%. Cycle time, more than brochure tonnage, sets shift output.
Hydration degumming recovers wet gums → dried concentrated lecithin (food emulsifier / pharma). Meal protein 44-46% feed-grade or 48-50% dehulled food-ingredient. Lecithin unit price often exceeds soy oil.
Signature · Press route lab
Choose the route by product positioning, not marketing language. Temperature window, tonnage, and batch time decide who you sell to.
Models · 300 / 325
80–85°C prepared feed · 10–12% moisture
Models · 355 / 400 / 426 / 480 / 500
≤60°C end-to-end
Models & line modules
Hot soybean: 200-325 ton hydraulic after cook 80-85°C / moisture 10-12%, 100-160 kg/barrel, 30-40 min, residual oil 6-8%. Cold soybean: 355-500 ton at ≤60°C, ~2 h/barrel, residual oil 12-15%. Size the cooker, degumming reactor, lecithin dryer, and meal path first — press tonnage is never the whole quote.
Project path
Soybean has lower oil content than peanut or sesame, so the economic logic of a hydraulic soybean line depends heavily on pretreatment control, meal value, and how crude oil will be handled downstream. Those realities should come before model selection.
Open process guide →
Line engineering
A soybean hydraulic line is not a single machine. It is an intake station, a dehulling floor, a conditioning stage, a press cell with operator rhythm, a crude-oil buffer zone, and a meal discharge system. The scope becomes clear when those modules are read as one flow instead of separate blocks.
Moisture variation between bean lots is common. Segregating intake by moisture and hull condition prevents the conditioner from fighting inconsistent feed all shift.
Soybean hull removal rate directly affects crude-oil color and phospholipid load. A 90% versus 70% dehulling target creates two different downstream conversations.
Barrel loading, cycle time, and discharge need a clear operator workflow. Soybean batches are typically larger volume per cycle, so labor staging matters more than on higher-oil seeds.
Market routes
A soybean line serving a feed-linked regional mill, a non-GMO specialty oil brand, and an industrial crude-oil supplier should not be scoped the same way. The press may overlap, but pretreatment depth, crude-oil treatment, and meal specifications are different decisions.
Meal protein and residual oil are negotiated with feed buyers before the line is sized. The crude oil is often sold as-is or lightly settled before transfer to a refinery.
Traceability, lower-temperature handling, and cleaner crude-oil transfer become the selling points. The meal also carries a premium if certification is maintained through the process.
Many soybean projects start with pressing and settling, then add refining, dewaxing, or filling modules in a later phase. The first layout must leave room for these connections.
RFQ essentials
Soybean projects are re-scoped more often than most other seeds because pretreatment depth, crude-oil treatment, and meal specification are frequently left out of the first inquiry. A complete first pack moves the discussion closer to a real plant.
The strongest soybean inquiries treat the meal as a co-product with its own spec sheet, not as press waste. That single shift changes the whole engineering conversation.
Open pre-pricing checklist →
Batch rhythm
A soybean line should be described with a complete rhythm: pre-press capacity, cooker count, steamer, and multiple 325 hydraulic presses. These numbers explain how a real line balances preparation, cooking, barrel loading, pressing, crude-oil handling, and meal discharge.
A 500 kg/h upstream preparation rate only makes sense when cooking and pressing cells can keep up. It should be compared with shift hours, bean moisture, and meal target.
A setup with multiple electric-heated flat-bottom woks and a steamer means the soybean scope should discuss cooking buffer and feed uniformity before press tonnage.
A 325 barrel of about 100 kg and a roughly 1.5-hour two-barrel rhythm are planning references. The final number still depends on bean condition, cake target, and operator handoff.
Real equipment & workshop
Common project questions
Bean oil is only 18-22%. Hydraulic residual oil stays 6-15%, leaving money in the cake. Hexane extraction leaves residual oil ≤1% and scales with meal economics. Hydraulic wins only where identity, cold-press claims, lecithin quality, or pilot flexibility justify higher residual oil.
Crude soy oil holds 1.8-2.5% phospholipids — the highest among common oilseeds. Skip degumming and the oil is dark red-brown, throws gum sediment in storage, and smokes heavily in frying. Hydration at ~90°C with 2-3% soft water + centrifuge + vacuum drying yields concentrated lecithin (≥60% phospholipids) for food and pharma.
Hot: 200 ton (~160 kg/barrel) or 300/325 ton (100 kg/barrel, 30-40 min) after crack to 4-6 pieces and cook at 80-85°C / moisture 10-12%; residual oil 6-8%. Cold: 355-500 ton series (370-630 ton class) at ≤60°C; residual oil 12-15%; sells at ~1.5-2× hot oil price in non-GMO/organic channels.
With-hull meal is typically 44-46% protein. Dehull (crack + aspirator, ≥85% hull separation) before pressing lifts meal protein to 48-50% and fiber ≤3% for food-ingredient markets. With-hull meal stays on the feed path. Plan dehulling at layout time, before the press is installed.
Bean type (GMO / non-GMO / organic) with oil %, protein %, impurities, moisture. Route: hot 80-85°C or cold ≤60°C. Degumming + lecithin recovery yes/no. Shift capacity. Scope: clean, crack, dehull, cook, press, degum, refine, fill. Meal path: feed 44-46% or food 48-50%. Utilities: steam, vacuum, power, floor plan.
Lock bean identity (GMO/non-GMO/organic), oil % and protein %, crack to 4-6 pieces, cook 80-85°C or cold ≤60°C, dehulling for meal 44-46% vs 48-50%, degumming + lecithin recovery yes/no, and steam/vacuum utilities. Press tonnage follows those decisions.
Crude soy oil holds 1.8-2.5% phospholipids — highest among common oilseeds. Hydration degumming (~90°C, 2-3% soft water), centrifuge, and lecithin drying must be scoped before the press room freezes, or retail oil quality fails.
When residual oil 6-15% is acceptable for non-GMO/organic cold oil, lecithin-led P&L, pilot R&D, or regional meal+oil under roughly 50 t/d; hexane plants chasing residual oil ≤1% are a different race.
Share feed condition, target output, post-press destination, and site constraints, and we will turn scope into a workable engineering plan.