Soybean Protein Concentrate (SPC) is produced by removing water-soluble and alcohol-soluble non-protein components from high-quality low-temperature defatted soybean meal (white flakes). With a protein content of ≥65%, SPC is a highly valuable nutritional additive used in meat processing, bakery and plant-based meat substitutes in the food industry, and in high-end pet food, aquafeed and animal nutrition in the feed industry.
Huatai’s turnkey SPC plant employs a continuous, environmentally friendly alcohol-wash method that maximizes protein yield while preserving functionality. Our process combines matured domestic and international ADM-alcohol benchmarks with full PLC automation for stable, 24/7 operation.
From customized layout design and equipment manufacturing to on-site installation, commissioning and lifelong after-sales support, Huatai delivers world-class EPC projects tailored to your capacity — with single-line output reaching up to 100,000 tons per year of high-quality soybean protein concentrate.
From white flakes to food- and feed-grade SPC — a closed-loop, zero-discharge process.
Low-temperature defatted soybean meal (white flakes, minimum 65% protein) is precisely weighed, magnetically separated and dedusted to remove impurities before extraction.
White flakes are thoroughly mixed with an alcohol-water solvent that selectively extracts and removes soluble sugars, minerals and anti-nutritional factors.
Heavy-duty twin-screw extruders press the wet SPC meal, reducing moisture from about 60–65% down to 50–55%.
Horizontal desolventizing equipment gently evaporates the remaining solvent, bringing the meal to a stable final moisture of 7–9%.
The liquid by-product (soy molasses) is treated with heaters and multi-effect evaporators, yielding concentrated molasses with solids content above 55% — a valuable commercial by-product.
Vaporized ethanol is recovered through heavy-duty condensers; residual gases pass through an advanced absorber system so only compliant, harmless air is vented.
Dried SPC passes through magnetic separators, an industrial crusher and a rotary screener; oversized particles are automatically recirculated to the crushing loop.
Through enzyme, shear and heat-treatment modification, key functional indexes of our SPC can exceed standard soybean protein isolates (SPI).
A fully integrated Cleaning-in-Place system disinfects equipment with dilute alkali and hot water; finished SPC is automatically packed and stored under PLC control.
Each system is designed and manufactured in-house under ISO 9001 quality management.
Weighing, magnetic separation and dedusting of low-temperature defatted soybean meal (white flakes, ≥65% protein) before extraction.
Continuous extractors mix white flakes with alcohol-water solvent to selectively remove soluble sugars, minerals and anti-nutritional factors.
Twin-screw pre-pressing and horizontal desolventizers reduce moisture to 7–9%; multi-effect evaporators concentrate soy molasses to >55% solids.
Rotary crushers and screens refine SPC into uniform powder; enzyme/shear/heat modification boosts functional indexes beyond standard SPI.
Integrated Cleaning-in-Place circulation disinfects equipment without disassembly; finished SPC is auto-packed and stored under PLC control.
Engineering innovations that deliver superior performance and lower operating costs.
We adopt matured domestic and international continuous acid-base and ADM-alcohol process benchmarks, delivering high-yield SPC with protein content exceeding 65%.
The continuous alcohol method is a closed-loop system with minimal environmental footprint and zero liquid waste discharge during core processing; solvent is recovered and reused.
The entire line is computer-controlled for absolute parameter stability and 24/7 operation, with single-line capacity reaching up to 100,000 tons per year.
Henan Huatai Intelligent Equipment Group was founded in 1988 and has grown into one of China’s major grain and oil machinery manufacturing enterprises. We integrate research and development, engineering design, equipment manufacturing, on-site installation and commissioning under one roof.
Our 100,000㎡ manufacturing campus in Hua County, Henan Province houses modern production lines with CNC machining centers, automated welding systems and comprehensive quality testing laboratories. As an ISO 9001 certified manufacturer, every piece of equipment undergoes rigorous inspection and factory acceptance testing before shipment.
We specialize in complete EPC turn-key projects covering the full spectrum of edible oil processing — from oilseed pretreatment and solvent extraction through to refining, fractionation and by-product utilization.
Years of Experience
Modern Factory
Countries Served
Global Offices
Tell us your target annual output and product grade (food or feed). Our engineers will prepare a tailored SPC plant proposal within 48 hours.
