Fuel ethanol plants
Integrated ethanol production systems for fuel markets, with fermentation, heat-integrated distillation and molecular-sieve dehydration engineered as a coordinated process.
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Explore complete ethanol plants by feedstock and product grade, then the process systems, engineering support and service parts that complete the project.
Plants by product grade
Food-grade ethanol & ENA ethanol plants
Precision separation for neutral alcohol applications. The process is selected around impurity control, sensory quality and the buyer’s complete product specification.
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Medical ethanol plants
Hydrous and anhydrous ethanol routes for medical applications. We coordinate refining, dehydration, product-contact materials and sampling around the agreed pharmacopoeial or purchaser specification. The Indonesia upgrade combines a 50,000 t/y ENA scope with a 30,000 t/y medical anhydrous scope; the product split defines the process balance.
Explore ↗Plants by feedstock
Bioethanol downstream products
Acetic acid process projects
Extend the ethanol value chain into acetic acid. CNE develops the equipment and separation interfaces around the selected conversion route, feed quality, acid concentration, corrosion conditions and product outlet. Reaction technology, catalyst supply and utility limits are established in the project scope.
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Ethyl acetate & butyl acetate
Design ester production and purification as one system. Feed ratios, reaction-water removal, alcohol recycle and product finishing determine the column duties. We coordinate separation equipment, materials and controls with the selected chemistry and agreed solvent specification.
Explore ↗Solvent recovery projects
Xanthan-gum alcohol recovery
Return alcohol to the xanthan-gum process at the required reuse quality. Variable solvent strength, entrained solids, fouling and residue handling shape the recovery train. Our Meihua and Zhongxuan projects include alcohol recovery and modifications to existing distillation systems.
Explore ↗Pharmaceutical solvent recovery
Recover ethanol and process solvents from extraction and manufacturing streams. We define segregation, impurity removal, cleanability and off-spec handling with the owner. The intended reuse step governs the analytical specification and validation responsibilities; solvent recovery alone does not qualify a pharmaceutical product.
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Food-industry alcohol recovery
Recover alcohol from food extraction and processing streams while controlling carryover into the recovered product. Feed composition, odor, nonvolatile residues and cleaning requirements define the separation and heat-recovery design. Reuse quality is agreed for the actual downstream application.
Explore ↗Extended value chain
Biobutanol, bioacetone & emerging fuels
Apply fermentation and separation engineering to biobutanol, bioacetone and higher-alcohol projects. For bio-aviation-fuel development, we evaluate upstream alcohol production and purification interfaces with the selected conversion licensor. Fuel conversion, pathway certification and finished aviation-fuel qualification are separate project requirements.
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Distillery yellow water & high-strength wastewater
Connect alcohol recovery, concentration and wastewater treatment around the actual stream. Solids, organic load, salts and variability determine whether recovery, evaporation or biological treatment is appropriate. Recovered condensate must be assessed before reuse; concentrate and sludge need defined outlets.
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Starch sugars & other ethanol routes
Our adjacent process experience includes the 5,000 t/y BioNeutra IMO line in Canada and dehydration within coal-derived/methanol-to-ethanol projects. Liquefaction, filtration, concentration and separation are selected for each product. A biochemical line and a non-biomass ethanol project retain their own product and carbon-feedstock identity.
Explore ↗Process equipment & systems
Feed preparation, liquefaction & fermentation
The front end sets the conditions for downstream separation. Our cassava front end integrates storage, milling, liquefaction, saccharification and controlled fermentation.
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Multi-effect distillation
Separate impurities with purpose. Reuse heat across pressure levels. Select the column arrangement for the product mix and the real feed composition.
Explore ↗Molecular-sieve dehydration
Continuous water removal through alternating adsorption and regeneration. A finishing stage for anhydrous ethanol production.
Explore ↗Distillation columns & internals
Tray geometry, liquid distribution and mechanical assembly are part of the separation system. CNE’s equipment archive provides a close view of the components inside the columns.
Explore ↗Heat exchangers & thermal interfaces
Reboilers, condensers and process heat exchangers connect the distillation system to the plant’s energy balance.
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Stillage evaporation & DDGS systems
Coordinate solids separation, thin-stillage evaporation, syrup blending and drying around a defined co-product specification. DDGS is a process system, not a general accessory; a molasses stillage route requires a different residue strategy.
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Heat integration & plant upgrades
Reduce avoidable heat losses by reviewing the complete energy network before selecting individual equipment.
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Distillery upgrades & energy optimization
CNE’s reference register contains repeated upgrades to distillation, dehydration, liquefaction and evaporation systems. Start with the bottleneck and define a measurable improvement.
Explore ↗Alcohol & solvent recovery
Recover alcohol from production streams in xanthan gum, pharmaceutical and food-processing applications. CNE’s references cover new recovery units and energy-saving modifications.
Explore ↗Process automation & instrumentation
Define the control narrative, instrument list, I/O, alarms and interlocks together with the process design. PLC or DCS architecture, hazardous-area suitability, remote support and site integration are agreed for the project.
Explore ↗Engineering support
Engineering documents & project interfaces
A process package becomes buildable when drawings, equipment data, control requirements and responsibilities agree. CNE’s service documentation describes the deliverables that connect these disciplines.
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Installation, commissioning & training
Move from completed construction to an accepted operating plant through documented checks, coordinated trial runs and trained operators.
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Quality assurance & traceability
Control the documents, verify the materials, inspect the work and retain the records. These are the foundations of CNE’s documented project quality approach.
Explore ↗Health, safety & environmental planning
CNE’s project HSE materials address responsibilities, site induction, work permits, inspections and management of change across construction and commissioning.
Explore ↗Accessories & spare parts
Accessories & spare parts
Maintenance parts and replacement components selected for the actual equipment: tray and packing elements, distributors, seals, gaskets and instrumentation interfaces. Availability and compatibility are confirmed against the equipment records.
Explore ↗Distillation tray parts
Replacement tray panels, valves, downcomers, supports and fasteners must match the original hydraulic and mechanical design. Send the equipment tag, drawing revision, dimensions, material and wear photographs. We check fit, open area, liquid levels and installation access before release.
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Pump parts & service components
Select seals, impellers, shafts, bearings and gaskets against the pump model and service. Fluid composition, temperature, solids, corrosion and duty point matter as much as dimensions. Provide the nameplate, serial number and parts drawing so that compatibility and availability can be confirmed.
Explore ↗Explore the engineering behind the project
Start with your feedstockDifferent raw materials need different front ends. Choose a route below to see the preparation steps, engineering priorities and data needed for a useful proposal.↗Two product markets. One integrated approach.Specify your end product first. We then align the feedstock route, separation system, utilities and plant interfaces around the required quality and capacity.↗Process intelligence. Plant-wide.Bring fermentation, separation, utilities and co-products into one coherent design. Explore the technologies that shape product quality and operating performance.↗From first study to reliable operationA coordinated delivery process gives each technical decision a clear owner, a defined interface and a verifiable outcome.↗Accessories & spare partsMaintenance parts and replacement components selected for the actual equipment: tray and packing elements, distributors, seals, gaskets and instrumentation interfaces. Availability and compatibility are confirmed against the equipment records.↗
CNE / Discuss your project
Your next plant starts with the right conversation.
Share your feedstock, target product and capacity. Let’s shape a practical process concept.