花生油 · Peanut Oil Press line configuration and machine scope
For projects where the seed is already known and the next question is how the hydraulic press fits inside a workable line.
Peanut line design names real modules: shelling, cleaning/destoning, grading, aflatoxin control, roasting (160-180°C), hydraulic pressing (300-325 hot / 355-500 cold), plate-frame filtration, storage, and cake handling (feed or flour).
Hot-route workflow with real hard data
Roast 160-180°C → moisture to 3-5% → 300-325 ton hydraulic press at 80-100°C → 100 kg/barrel, 30-40 min → plate-frame filter 200-300 mesh → crude oil clarity target: sediment ≤0.1%, moisture ≤0.2%.
Press family matched to route temperature
Hot peanut lines: 300-325 ton, 80-100°C, higher throughput. Cold premium: 355-500 ton, ≤60°C, lower yield but premium positioning. Do not use cold-press claims for hot-route oil.
Batch references with real numbers
Standard barrel 390 mm × 800 mm loads ~100 kg. Model 325 uses 14 partitions. Hot cycle: 30-40 min/barrel. Cold cycle: 60-90 min/barrel. Residual oil hot 6-8%, cold 8-10%.
Aflatoxin control and food safety
Aflatoxin B1 limit <20 μg/kg (EU) / <20 ppb (US). Damaged/moldy kernels must be removed by color sorter or manual picking. Test every batch. One contaminated batch can destroy an entire export shipment.
The modules most often scoped together on a peanut line
Seeing roasters, presses, filtration, storage, and cake handling together sharpens the phase boundary.
Filtration, clarification, and crude-oil handoff
This stage shapes crude-oil condition, storage planning, and downstream readiness.
Machine ladder
Choose the press family after you define the route
Peanut machine selection starts with route logic, not tonnage. Hot route: 300-325 ton, roast 160-180°C, press 80-100°C, yield 40-48%, residual oil 6-8%. Cold route: 355-500 ton, ≤60°C, yield 35-42%, residual oil 8-10%. Either way, shelling quality, kernel moisture 5-8%, aflatoxin control <20 μg/kg, roast discipline, batch size 100 kg/barrel, filtration 200-300 mesh, and cake protein 45-50% matter more than headline tonnage.
Judge filtration and storage after oil discharge
Align oil discharge, filtration, settling, and storage in the same layout discussion.
Cake discharge affects press-room layout
If cake is sold, crushed, or stored, discharge direction and collection space need to be reserved early.
Hot-route workflow with real hard data
Roast 160-180°C → moisture to 3-5% → 300-325 ton hydraulic press at 80-100°C → 100 kg/barrel, 30-40 min → plate-frame filter 200-300 mesh → crude oil clarity target: sediment ≤0.1%, moisture ≤0.2%.
Press family matched to route temperature
Hot peanut lines: 300-325 ton, 80-100°C, higher throughput. Cold premium: 355-500 ton, ≤60°C, lower yield but premium positioning. Do not use cold-press claims for hot-route oil.
Batch references with real numbers
Standard barrel 390 mm × 800 mm loads ~100 kg. Model 325 uses 14 partitions. Hot cycle: 30-40 min/barrel. Cold cycle: 60-90 min/barrel. Residual oil hot 6-8%, cold 8-10%.
Aflatoxin control and food safety
Aflatoxin B1 limit <20 μg/kg (EU) / <20 ppb (US). Damaged/moldy kernels must be removed by color sorter or manual picking. Test every batch. One contaminated batch can destroy an entire export shipment.
Supporting equipment
Modules commonly discussed around the hydraulic press
Cleaning, destoning, and shelling
Remove stones, metal, stalks. Shell pods (shell 30-40% of pod weight). Shells can be used as fuel or fiberboard filler. Shelling must be sized to match press throughput.
Kernel grading and aflatoxin control
Grade by size for uniform pressing. Remove damaged/moldy kernels (aflatoxin B1 <20 μg/kg target). Color sorter or manual picking. Test every incoming batch.
Roasting and heating equipment
Hot route: electric flat-bottomed woks or drum roasters, 160-180°C, moisture to 3-5%. Cold route: no roasting; gentle crushing at ambient or ≤60°C. Roast log must be kept per batch.
Hydraulic press core machine
300-325 ton (hot, 80-100°C) or 355-500 ton (cold, ≤60°C). 100 kg/barrel. Cycle time and residual oil are the real performance metrics, not brochure tonnage.
Plate-frame filtration and crude-oil transfer
200-300 mesh stainless steel filter cloth. Remove sediment ≤0.1%. Transfer to settling tank. For premium cold-pressed oil, add bag filter 1-5 μm before bottling.
Cake discharge, cooling, and storage
Cool cake to <40°C before storage to prevent rancidity. Protein 45-50%. Food-grade flour route requires 60-80 mesh grinding and nitrogen-flushed packaging.
Project rhythm
What the factory team usually clarifies before shipment
- Clarify whether shelling and roasting are inside this order or already solved upstream.
- Share kernel test data: oil content 44-56%?, moisture 5-8%?, aflatoxin B1 level?
- Confirm if crude oil goes to plate-frame filtration, settling tanks, storage, refining, or direct filling.
- Provide workshop dimensions, utility limits (power 200-400 kW), and handling constraints.
- Tell the factory how peanut cake will be collected, cooled, sold, or processed (feed vs flour).
Decision support
Questions that determine whether the line is right-sized
- Feed form: pods (shell 30-40%) or shelled kernels. Kernel oil content 44-56%? Moisture 5-8%? Tested?
- Aflatoxin control: color sorter? Manual picking? Lab test frequency? Target B1 <20 μg/kg (EU) / <20 ppb (US).
- Route: hot press (roast 160-180°C, press 80-100°C) or cold press (≤60°C) or both?
- Capacity: barrels per shift or kg per hour. Hot cycle 30-40 min/barrel; cold cycle 60-90 min/barrel.
- Scope: shelling, roasting, pressing, filtration 200-300 mesh (or 1-5 μm for cold), storage, refining, bottling?
- Cake plan: waste, animal feed (protein 45-50%), or food-grade peanut flour (60-80 mesh + nitrogen packaging)?
- Power: 200-400 kW. Workshop dimensions, ceiling height, and photos of existing equipment.
Questions to confirm next
Is peanut oil usually hot pressed or cold pressed?
What output data should I expect?
What should I send before asking for peanut equipment pricing?
Read this next
These next pages move the peanut discussion forward
Ready to size a line for your oilseed?
Share peanut feed form, shelling status, target output, roasting method, filtration requirement, and cake destination so the scope can be narrowed to the right machine class and project boundary faster.