The rapeseed press is the second module — the cleaner and cooker decide what enters the barrel
Most rapeseed mills run 60–120 days a year during harvest. The line must start clean, run reliably at rated throughput, and be able to be shut down and protected during the idle season without equipment degradation.
How a rapeseed hydraulic press fits a complete seasonal line: cleaner, steam cooker (95-105°C), 300/325 press (60 MPa/2.2 kW/100 kg), settling tank, plate filter, crude storage, and the seasonal teardown logic.
Traditional vs canola variety verification at intake
The variety must be identified at intake — they look similar but produce different oils. Traditional Brassica napus / Brassica juncea high-erucic varieties versus canola (Canadian-bred low-erucic, low-glucosinolate). This determines the entire downstream plan.
Pre-cooking at 100–110 °C for hot-press route
Steam-jacketed cooker conditions the seed before hydraulic pressing. Proper conditioning gives cleaner oil release, lower residual oil in cake, and the characteristic nutty aroma traditional buyers expect.
300/325 hot-press, 100 kg/barrel, 30–40 min/barrel
300 ton hot-press for moderate capacity, 325 ton for higher-pressure handling of stubborn seed batches. Two-barrel cycle including loading is ~1.5 h. Residual oil in cake ≤7%.
Full RBD refining section (matching rapeseed refining section)
Degumming with hot water + phosphoric acid for hydratable phospholipids, alkali neutralization to remove FFA, bleaching with activated earth, vacuum deodorization at 240–260 °C. The result is a pale yellow neutral oil suited to retail.
The six sections every working rapeseed line needs
1 — Cleaning
Vibrating screen and destoner remove pods, dirt clods, stones, and heavy trash. Rapeseed has fine seeds that pass screen openings easily — size the mesh correctly.
2 — Cooking
Steam cooker at 95-105°C, 15-20 min. This single step is responsible for 6-8 pp of yield difference between mills. Undercooking is the most common reason rapeseed plants run below their rated yield.
3 — Press (300/325)
100 kg/barrel, 30-40 min cycle, 60 MPa. Carbon-steel partition plates, twin pressure gauges. Two presses running alternately give near-continuous crude flow.
4 — Settling tank
Fresh crude needs 3-5 h at 55-65°C to let fines drop. An insulated 1-2 t tank with a drain valve is sufficient for a single-press line.
5 — Plate filter
Filter settled crude to remove residual fines. Filter press grade 80-120 mesh for crude sale; finer for bottled or refinery-feed oil.
6 — Crude storage
Labeled tanks for fresh crude, settled oil, and refinery feed. Seasonal mills need capacity for several days of output — one tank per status avoids cross-contamination.
How seasonal rapeseed mills start, run, and protect equipment between harvests
Most rapeseed mills in China press for 60–120 days per year, timed to the local harvest window. This rhythm has consequences for how the line must be built and protected. At startup, the cooker and press need a pre-heat cycle — bringing the cooker to operating temperature and running a test batch through the press before loading commercial seed. Startup-cycle oil is lower quality and should go to a separate tank or be recirculated, not mixed with production crude. During the run season, the biggest operational discipline is keeping cooking temperature consistent: small rapeseed burns quickly in a dry-heat drum but steams well in a horizontal steam cooker where temperature is regulated by steam pressure. The press itself needs its hydraulic oil checked every 200 hours and replaced annually even if hours are low — rapeseed season oil sits idle for 8–10 months and moisture can enter through breather caps. Barrel cakes and partition plates should be inspected after each 30-day run block and before shutdown: a cracked cake or bent partition causes uneven pressure distribution and reduces yield per barrel. At seasonal shutdown, drain crude from all tanks, flush filter housings with warm oil, and cap all ports. Hydraulic system: drain and replace oil, cap the reservoir, remove moisture from the pump housing. A properly shut-down press restarts in 2–3 days; a neglected one may need barrel replacement before it can run again.
What to confirm before scoping Rapeseed Hydraulic Press Line: Cleaner, Cooker, Press, Settling, and Seasonal Setup
Rapeseed Hydraulic Press Line: Cleaner, Cooker, Press, Settling, and Seasonal Setup should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Rapeseed / Canola Oil Press modules stay. Listed on the factory hot-press page — discuss 300/325 first.
When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.
- Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
- Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
- Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
- Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.
Match hot / cold models to factory hard data
When discussing Rapeseed Hydraulic Press Line: Cleaner, Cooker, Press, Settling, and Seasonal Setup, pin models to published factory specs — not tonnage alone.
Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).
- Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
- Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
- Listed on the factory hot-press page — discuss 300/325 first.
project scope needs to land in equipment interfaces
After Rapeseed Hydraulic Press Line: Cleaner, Cooker, Press, Settling, and Seasonal Setup is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.
Front-end input
Record feed form, daily volume, moisture, and sorting needs so pretreatment is not left to operators.
Clarification, refining, and meal
Traditional flavor oil may use light filtration; canola retail often needs full RBD. Cold dense powder needs 355–500 — not 300/325 alone.
Delivery data
Prepare space, power (often 380V/50Hz/3ph), labor, target package, local rules, and acceptance method before quotation.
Clear these up first
One press processing two barrels per 1.5 hours gives roughly 130 kg of oil per hour at 40% yield (100 kg seed × 2 barrels / 1.5 h = 133 kg seed/h × 0.4 = ~53 kg oil/h per press). Most small seasonal mills run 2–4 presses to keep the cooker and filter sections fully loaded. Two presses alternating barrels also give near-continuous crude flow, which matters for settling tank sizing.
These next pages move the discussion forward
Buying guides
Hydraulic vs Screw Oil Press for rapeseed: Which Fits Your Mill?
Compare hydraulic batch press vs continuous screw (expeller) for rapeseed: oil quality, cold-press ability, capacity, residual oil, labor, and when each route wins. Use this before you request a quote.
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rapeseed Hydraulic Press Capacity: Barrels per Shift and How Many Presses
Size rapeseed hydraulic capacity with real cycles: hot pure press 30-40 min/barrel (~1.5 h for 2 barrels with loading); cold ~2 h pure / ~4.5 h for 2 barrels. Example math for 1–5 t/day small mills.
Continue →Buying guides
rapeseed Oil Press Inquiry Checklist: Data That Gets a Real Quote
RFQ checklist for rapeseed hydraulic oil press projects: seed form, kg/shift, hot/cold, filtration, cake path, power, country, and photos. Incomplete inquiries get catalog replies — complete packs get model counts and line scope.
Continue →Send this page's requirement to the factory
Bring feed condition, target output, and site constraints, and we will continue from what this page covers.