Verified Material Grade
IS 2062 plate for structure and extractor body, SS 304 or SS 316 on miscella and oil contact parts, backed by mill test certificates in your company name.
Solvent Extraction Plant Manufacturer in Bihar
Mecha Engineering designs, fabricates and commissions turnkey solvent extraction plants for the rice bran units of Rohtas and Bhojpur, the maize belt of Kosi and Seemanchal, and the mustard crushers of Purnia and Begusarai. Batch units from 10 TPD up to continuous lines of 500 TPD.
- Batch and continuous type
- 10 TPD to 500 TPD
- Rice bran and maize germ duty
- Kosi and Seemanchal experience
- Turnkey erection across Bihar
10 TPDSmallest batch unit
500 TPDLargest continuous line
Under 1%Residual oil in meal
38Districts served
Solvent Extraction Plant in Bihar
Bihar produces an enormous quantity of rice bran and sells far too much of it raw. The milling clusters across Rohtas, Bhojpur, Buxar, Kaimur, Patna, Gopalganj, Siwan, Purnia and Katihar generate bran every day, and most of it still leaves the district as cattle feed rather than as crude rice bran oil and de-oiled rice bran. Bran is also unforgiving, because free fatty acid starts climbing the moment stabilisation slips.
The Kosi belt adds a second opportunity that few plant builders design for. Khagaria, Begusarai, Samastipur and Purnia sit on one of the densest maize growing regions in India, and maize germ from starch and flaking units carries 18 to 24 percent oil. As a solvent extraction plant manufacturer in Bihar, Mecha Engineering sizes the preparatory section around bran, germ or mustard cake as the case may be, and fabricates the plant at our own Saharanpur works.
- Despatch built for the distance. Plants leave Saharanpur in match-marked, trailer-sized sections with a full erection drawing set, so nothing is cut or improvised on your Sasaram, Purnia or Begusarai site.
- Turnkey or section wise. Take the complete line, or only the preparatory section, the extractor, the DT or the distillation and recovery block to upgrade what you already run.
- Safety built into the design. Flameproof motors and panels, proper earthing, nitrogen purging points and vent gas recovery, documented for your statutory approvals.
- Spares without an import wait. Chains, slats, wedge wire screens, gaskets, seals and condenser tubes are made and stocked at our own works.
What you get with every plant
Four Commitments Behind Each Bihar Installation
These are the points a Rohtas, Purnia or Begusarai oil miller checks before releasing a purchase order, so we put them in writing rather than in a brochure line.
Shop Assembly and Testing
Extractor drive, conveyors and vessels trial assembled and run at our Saharanpur shop. Hydro and leak tests are recorded before anything is loaded on a trailer.
Turnkey Erection by Our Team
Civil and foundation drawings, structural erection, piping, insulation, utility tie-in, commissioning and operator training at your Bihar site, covered in the scope.
Direct Manufacturer Pricing
You buy from the fabricator, not a trading house. No dealer margin, and every design change is quoted against actual material, machining and labour.
Build features
Features of Mecha Engineering Solvent Extraction Plants:
Every feature below protects one of three numbers your plant is judged on: oil recovered, solvent lost and steam burned per tonne.
01
Maximum Oil Recovery Efficiency
Extractor bed depth, sprinkler layout and miscella stage count are matched to your feed so solvent washes the bed evenly. Residual oil in the meal is held to under one percent on a dry basis instead of drifting up with load.
02
Energy Efficient Operation
Economiser, multi-stage evaporation and heat exchange between hot meal, vapour and incoming miscella cut live steam demand. Lower steam and power per tonne is where an extraction plant actually earns its payback.
03
Robust Safety Systems
Vapour recovery, nitrogen blanketing points, flameproof motors, starters and field instruments, bonded earthing and gas detection. The hexane section is treated as a hazardous area from the first drawing, not retrofitted later.
04
Customisable and Scalable Design
Layouts are drawn to your shed height, plot shape and boiler capacity. The structure and utility headers are sized so a second extraction line or a refinery block can be added later without rebuilding.
05
Low Hexane Loss Per Tonne
Shell and tube condensers, a solvent water separator and a mineral oil vent gas absorption column recover solvent that most plants send out of the vent. Hexane is a running cost, so every litre recovered is margin.
06
Feed Grade Meal Protected
Controlled steam sparging and residence time in the desolventiser toaster strip solvent without scorching the meal, so protein and colour hold up and your de-oiled cake sells into the feed trade at the better rate.
Systems we supply
Solvent Extraction Plant Range for Bihar Processors:
Pick the line that matches your feed material, or send your material analysis and we will tell you which of these fits.
Rice Bran Solvent Extraction Plant
Built around stabilised and pelletised bran, with an expander section, gentle bed handling and a DT sized to protect meal quality. The standard choice for Rohtas, Bhojpur, Buxar and Kaimur.
Maize Germ Extraction Plant
Conditioning and flaking ahead of a continuous extractor for germ from starch and flaking units, sized for the Kosi maize belt around Khagaria, Begusarai and Samastipur.
Mustard and Rapeseed Cake Plant
Cake breaking, sizing and conditioning to pull the remaining 8 to 12 percent oil out of expeller cake, for Purnia, Katihar, Madhepura, Saharsa and Begusarai.
Mini and Batch Type Extraction Plant
Batch percolation extractors for 10 to 30 TPD duty, lower capital and simpler operation. The practical first plant for a rice miller adding extraction behind existing capacity.
Mahua and Non-Edible Seed Plant
Decortication, drying and flaking ahead of the extractor for mahua, neem and karanja from the Gaya, Jamui and Banka belt, feeding soap and oleochemical buyers.
Spent Earth and Re-Extraction Unit
Recovers the 20 to 30 percent oil held in refinery spent bleaching earth and residues, turning a disposal problem into a recovered oil stream.
Technical data
Solvent Extraction Plant Specifications:
Standard build for a continuous solvent extraction line. Every line below is changed to order, so treat this as the starting point for your enquiry rather than a fixed model list.
| Parameter | Standard offering | Options on request |
|---|---|---|
| Plant Capacity | 10, 20, 30, 50, 100, 150 and 200 TPD | Up to 500 TPD, and parallel lines for staged expansion |
| Plant Type | Continuous extractor for commercial oilseed duty | Batch percolation type for mini plants and herbal lines |
| Feed Material | Rice bran, maize germ, mustard cake and sesame cake | Sunflower, niger, mahua, neem, spent bleaching earth |
| Solvent Used | Commercial hexane to IS specification | Ethanol, IPA or ethyl acetate for herbal and oleoresin duty |
| Residual Oil in Meal | Under 1 percent on a dry basis | 0.5 to 0.7 percent with expander prepared feed |
| Hexane Consumption | Around 1.5 to 2.5 litres per tonne of material | Lower with vent gas absorption and mineral oil scrubber |
| Material of Construction | IS 2062 plate for structure and extractor body | SS 304 or SS 316 throughout for food, herbal and pharma duty |
| Preparatory Section | Cleaner, magnetic separator, cracking roll, conditioner, flaker | Expander, pelletiser, dehuller and cooker for higher bulk density |
| Extractor Type | Rotocel or shallow bed chain type with wedge wire screens | Loop type, sliding cell or basket type to suit the material |
| Desolventising | Desolventiser toaster with steam sparging trays | DTDC with dryer and cooler for finished feed grade meal |
| Miscella Distillation | Two stage evaporation with vacuum stripping column | Economiser plus rising film stages to hold FFA down |
| Solvent Recovery | Shell and tube condensers with solvent water separator | Vent gas absorption column with mineral oil circulation |
| Heating Utility | Low pressure steam from your boiler, at 3 to 10 kg per sq cm | Thermic fluid, waste heat recovery and economiser tie-in |
| Safety Fittings | Flameproof motors and panels, bonded earthing, purging points | Nitrogen blanketing, gas detectors, sprinkler and hydrant tie-in |
| Control System | Local panel with interlocks, level and temperature indication | PLC with HMI, SCADA link, batch reporting, flameproof instruments |
| Documentation | GA drawing, P and ID, MOC certificates, test report, manual | Third party inspection, statutory approval support, IQ and OQ protocols |
Scroll the table sideways on a mobile screen. Send your material, daily tonnage and available steam and we will fill this sheet in against your process.
Choosing a configuration
Which Feed Material Fits your Bihar Plant?
The feed material decides the preparatory section and the extractor, not the other way around. This is the shortlist we work through with a Bihar buyer on the first call.
| Feed material | Oil available | Preparation needed | Typical Bihar location |
|---|---|---|---|
| Rice Bran | 14 to 20 percent | Stabilising, then pelletising or expander | Rohtas, Bhojpur, Buxar, Kaimur, Gopalganj |
| Rice Bran (Seemanchal) | 14 to 20 percent | Stabilising, then pelletising or expander | Purnia, Katihar, Araria, Kishanganj |
| Maize and Corn Germ | 18 to 24 percent | Conditioning and flaking | Khagaria, Begusarai, Samastipur, Purnia |
| Mustard and Rapeseed Cake | 8 to 12 percent residual | Cake breaking, sizing and conditioning | Purnia, Katihar, Madhepura, Saharsa, Supaul |
| Sesame and Sunflower Cake | 6 to 12 percent residual | Cake crushing and sizing | Bhagalpur, Munger and eastern Bihar units |
| Niger Seed | 30 to 40 percent | Cleaning, conditioning and flaking | Jamui, Banka and the southern upland belt |
| Mahua and Neem Seed | 20 to 35 percent | Decortication, drying and flaking | Gaya, Nawada, Jamui, Banka |
| Spent Bleaching Earth | 20 to 30 percent held oil | Direct charging, no flaking needed | Refineries around Patna, Begusarai and Barauni |
Not sure which row you belong to? Share the material name and a recent oil content report and we will confirm the configuration along with an indicative recovery figure.
How the plant runs
The Solvent Extraction Cycle, Step by Step
Six stages from raw cake to crude oil and de-oiled meal. The solvent runs in a closed loop throughout, which is what keeps hexane cost and fire risk under control.
01
Material Preparation
Feed is cleaned, de-stoned and passed through cracking rolls, a conditioner and a flaker or expander so the oil bearing cells open and the bed drains freely.
02
Extraction With Hexane
Prepared material moves through the extractor while hexane is sprayed counter-current across the bed. Oil dissolves into the solvent and leaves as miscella.
03
Desolventising and Toasting
Wet meal enters the desolventiser toaster, where steam sparging strips residual hexane and toasts the meal to stable moisture and temperature.
04
Miscella Distillation
Miscella is heated through the economiser and evaporation stages, then vacuum stripped so the crude oil leaves free of solvent traces.
05
Solvent Recovery
Vapour condenses in shell and tube condensers and passes to the solvent water separator. Vent gas goes to the absorption column so uncondensed hexane is recovered.
06
Oil and Meal Handling
Crude oil is cooled and pumped to storage or onward to refining. De-oiled cake is dried, cooled and conveyed for bagging or bulk despatch.
Where these plants are used
Application Areas of Solvent Extraction Plants:
Rice Bran Oil Producers
Rice milling groups adding an extraction unit to convert bran they currently sell cheap into crude rice bran oil and de-oiled rice bran for the feed trade.
Maize Starch and Germ Processors
Kosi belt starch and flaking units recovering oil from germ, a stream that is often sold raw for want of extraction capacity nearby.
Mustard and Edible Oil Mills
Seemanchal and Begusarai expeller units recovering the oil that pressing leaves in cake, usually the fastest payback a Bihar oil mill can make.
Cattle and Poultry Feed Makers
De-oiled cake producers judged on protein, colour and residual solvent, so the desolventiser toaster design matters as much as the extractor.
Oleochemical and Soap Units
Non-edible seed processing for mahua, neem and karanja from the southern belt, feeding soap, oleochemical and biodiesel streams.
Edible Oil Refineries
Refining groups adding captive extraction upstream, or re-extracting spent bleaching earth to recover held oil rather than paying to dispose of it.
Supply and service network
Our Solvent Extraction Plant Network Across Bihar
Dispatch, erection and site service run out of our Saharanpur works to every district of Bihar. These are the locations we work in most often.
- Patna
- Ara
- Buxar
- Sasaram
- Dehri
- Bhabua
- Aurangabad
- Gaya
- Nawada
- Jehanabad
- Arwal
- Biharsharif
- Bihta
- Barh
- Bakhtiyarpur
- Begusarai
- Barauni
- Khagaria
- Samastipur
- Muzaffarpur
- Hajipur
- Chhapra
- Marhaura
- Siwan
- Gopalganj
- Motihari
- Bettiah
- Sitamarhi
- Sheohar
- Madhubani
- Darbhanga
- Supaul
- Saharsa
- Madhepura
- Purnia
- Katihar
- Araria
- Forbesganj
- Kishanganj
- Bhagalpur
- Banka
- Munger
- Lakhisarai
- Sheikhpura
- Jamui
District not on the list? The list is only where we have worked most recently. Site visits, erection and after-sales service cover every district in Bihar, and we supply across India and to export markets.
Questions we are asked
Solvent Extraction Plants in Bihar: FAQs
Straight answers to what Bihar buyers ask before and after a site visit.
Who manufactures solvent extraction plants in Bihar?
Mecha Engineering Pvt. Ltd. designs and fabricates solvent extraction plants at its own works at Village Meharbani on Behat Road, Saharanpur, Uttar Pradesh, and supplies them across Bihar. The company was set up in 2022 and builds extraction, distillation, drying and process equipment for edible oil, agro-processing, feed, herbal and chemical units in Bihar, the rest of India and export markets.
What capacity range can you supply for a Bihar plant?
Batch type mini plants start at around 10 TPD, and continuous lines are built from 20 TPD up to 500 TPD. Most Bihar enquiries come from rice millers adding extraction behind existing milling capacity, so the practical question is how many tonnes of bran your mills generate each day. A 10 to 30 TPD batch plant is often the right first step, with the structure left ready for a continuous line later.
Which materials can the plant process?
Rice bran, maize and corn germ, mustard and rapeseed cake, sesame and sunflower cake, niger, mahua, neem and karanja seed, and refinery spent bleaching earth. Stainless steel versions handle oleoresin and herbal material. Bran and germ need very different preparation, which is why we ask for an oil content and moisture report before quoting.
How much residual oil is left in the meal?
A properly prepared and correctly loaded plant leaves under one percent oil in the meal on a dry basis, and 0.5 to 0.7 percent is achievable where the feed goes through an expander. Preparation matters more than the extractor here, which is why we quote the preparatory section and the extractor together rather than separately.
What is the hexane consumption and how is loss controlled?
Typical consumption runs around 1.5 to 2.5 litres per tonne of material processed. Loss is controlled by condenser sizing, a properly working solvent water separator, sealed conveyors and a vent gas absorption column that scrubs uncondensed vapour with mineral oil before anything leaves the plant.
What safety arrangements are included?
The hexane area is designed as a hazardous zone from the start. Flameproof motors, starters and field instruments, bonded earthing across the structure, nitrogen purging connections, gas detection points and a vapour recovery loop are part of the standard scope, and drawings are prepared in the form your statutory and insurance inspections in Bihar ask for.
Can you supply only one section instead of a full plant?
Yes. Common jobs are adding a preparatory or expander section ahead of an existing extractor, replacing a worn extractor chain and screen assembly, upgrading a DT to a DTDC, rebuilding the distillation and recovery block to cut steam, and adding a PLC panel to a manually run plant. Send photographs, your current layout and a nameplate reading to start.
Is installation and commissioning included for Bihar sites?
Yes, and the scope is the same as for a site next door. Foundation and civil drawings, structural erection, equipment installation, piping, insulation, utility tie-in, water and solvent trials, first production run and operator training at your Bihar site are included. Our erection team travels to site and stays until the plant is producing to specification.
How long does delivery take, and what about freight to Bihar?
Mini and batch plants are generally ready in 12 to 16 weeks. Continuous lines take 20 to 30 weeks depending on capacity and automation, with erection running alongside your civil work. Road freight from Saharanpur to Rohtas, Patna, Begusarai or Purnia is quoted at actual cost, and for large vessels and structures we arrange the trailer, route survey and unloading crane.
How do I get a price for my plant?
Call +91-9084351006 or +91-7500378000, send a WhatsApp message, or email info@mechaengg.com with four details: the material you will process, the tonnes per day you want to handle, the oil and moisture content of that material and the steam and power available at your site. A specification sheet, layout and price come back within one working day.
Talk to the specialist
Get Your Solvent Extraction Plant Quoted This Week
Share the material, the tonnes per day and the steam you have available. Our Saharanpur engineering team returns a specification sheet, plant layout and price so you can compare on paper rather than on promises.