Grain dryer FRPX

stationarycontinuous

Overview
The FRPX Series is a continuous-flow grain dryer designed for high-throughput agricultural applications. It combines two modulating burners, differentiated temperature zones along the drying column and an in-column tempering/resting zone to improve process control, reduce thermal stress and preserve final grain quality while optimizing energy use through air recirculation.

Key advantages

• Dual burner: Two inline burners provide increased thermal power and flexible modulation for high-moisture batches.
• Differentiated temperature zones: Independent temperature management along the column ensures gradual, uniform drying and limits heat stress on kernels.
• In-column tempering: Internal resting zone allows moisture and temperature equalization before cooling and discharge, improving end-product quality.

Main components & functions (visualizer)

• Loading hopper: Internal geometry designed for steady grain flow and consistent feed to the drying column.
• Main fans: Located opposite the burners and operated in suction mode to ensure uniform airflow; fitted with silencers and dampers to reduce noise and dust emissions.
• Catwalks: Internal and external walkways for safe inspection and routine maintenance access.
• Air ducts: Profiled ducts that promote grain flow and efficient heat exchange between air and product.
• Heat generator: Two inline burners available for natural gas and LPG; diesel versions optional; precise modulation for uniform air temperature.
• Recovery fans: Positioned at the base to collect and reintroduce part of the hot air into the cycle, improving energy efficiency.
• Extraction device: Oscillating shutters enable even and controlled grain discharge.
• Basement: Structural base anchored to the ground, certified for extreme wind, snow and seismic loads to ensure dryer stability.

Drying process flow

• Air intake: Ambient air is drawn into the dryer and heated to support drying.
• Central drying zone: Hot air from the first burner (set at a lower temperature) passes through the central section for balanced drying.
• Upper drying zone: Recovered air heated by the second burner at higher temperature treats the upper column section for final moisture removal.
• Exhaust air expulsion: Moisture-laden exhaust air is vented from the dryer.
• Product cooling: Dried grain is cooled with ambient air in the lower section prior to extraction.
• Energy recovery: Hot air from the base is partially recovered and reintroduced into the circuit to reduce fuel consumption.

Complementary technologies & control

• VAP System: Strahl technology to further reduce dust emissions.
• Moisture control system: Continuous monitoring of product moisture for precise process control.
• Extraction speed regulator: Option with inverter to adjust product discharge rate.
• Supplementary temperature monitoring: Additional probes for more granular temperature control across sections.
• Strahl control systems: Real-time supervision, alarm handling and cycle optimization to maximize yield, grain quality and operational efficiency.

Technical characteristics / specifications

• Brand: Strahl
• Model: FRPX Series
• Continuous-flow grain dryer with in-column tempering/resting zone
• Two inline burners (natural gas, LPG; diesel option) for modulated thermal power
• Air recirculation architecture with recovery fans to improve energy efficiency
• Main fans in suction mode with silencers and dampers to reduce noise and dust
• Loading hopper and profiled air ducts for optimal grain feed and heat exchange
• Internal/external catwalks for safe inspection and maintenance
• Oscillating-shutter extraction device for uniform discharge
• Anchored structural base certified for extreme wind, snow and seismic conditions
• Optional systems: VAP dust reduction, moisture control, VFD extraction regulator, extra temperature probes
• Integrated control systems for real-time data, alarms and process optimization