Turnkey EPC High-Cleanliness Direct Coal-Fired Hot Air Furnace For Spray Tower in Nigeria

Category: Daily Chemical Plants | Thermal System | Spray Tower Hot Air Furnace
Location: Nigeria
Delivery Mode: Full Turnkey EPC (Key-in-Hand)
Application: Spray Tower Drying for detergent powder (daily chemical industry)

• High-cleanliness hot air for spray tower: clean hot air with no black smoke, supporting stable powder quality and tower operation
• High thermal efficiency: >95% thermal efficiency to reduce fuel OPEX
• Wide temperature control: hot air temperature adjustable below 1000°C to match spray tower process needs
• Stable continuous supply: continuous hot air supply stability within ±5°C
• Reliable & easy maintenance: simple operation, convenient maintenance, high durability, low operating cost
• High safety: safe operation design with no explosive hazard

• Industry: Daily Chemical
• Downstream Equipment: Spray Tower
• System: High-Cleanliness Direct Coal-Fired Hot Air Furnace + Hot Air Delivery
• Efficiency: >95%
• Control: Temperature & heat capacity adjustable; stable continuous supply (±5°C)
• Delivery: Full Turnkey EPC (design → supply → installation → commissioning → training)

A daily chemical manufacturer in Nigeria required a customized hot air system for a spray tower. Key requirements included:

• Hot air quality suitable for spray tower drying (high cleanliness, stable supply)
• High efficiency to control long-term fuel cost
• Flexible temperature adjustment to support different operating conditions
• Turnkey EPC delivery to reduce interface risks across furnace, ducting, controls, and tower connection
• Stable, safe, and maintainable system for long-term plant operation

Raw coal is fed into the combustion chamber for stable combustion. The generated high-temperature flue gas is guided through a high-temperature purification/cleaning section, then controlled mixing is applied to obtain the required hot air temperature for the spray tower.
Hot air temperature and heat supply capacity can be adjusted based on process requirements, while maintaining stable continuous operation.

We delivered the project on a full turnkey EPC basis, including:

Process & engineering design: system configuration, spray tower interface design, layout, utilities integration

Complete equipment manufacturing & supply: hot air furnace, purification section, hot air mixing/control, ducting interface package

Electrical & automation: control cabinet, instrumentation, interlocks/alarms, operating logic

Installation & commissioning: on-site installation, hot run test, performance verification

Training & handover: SOPs, maintenance guidance, operator training, spare parts recommendation

1) High-Cleanliness Hot Air Output

High-temperature purification section improves hot air cleanliness

Stable combustion and flow control supports consistent hot air quality
Value for spray tower: helps reduce contamination risk and supports consistent drying performance.

2) High-Efficiency Heat Utilization

Structure and heat utilization optimized to achieve >95% thermal efficiency
Value: lower fuel-related OPEX and more cost-effective long-term operation.

3) Precise & Stable Temperature Control

Hot air temperature adjustable below 1000°C to match tower operation

Continuous supply stability ±5°C supports stable drying and reduces process fluctuation.

4) Reliability, Maintainability & Safety

Simplified operation and easy maintenance for long service life

Safety-oriented design for stable operation with no explosive hazard

During commissioning and acceptance, the system is typically verified by:

• Cleanliness: hot air output meets "high-cleanliness / no black smoke" requirement
• Efficiency: thermal efficiency confirmed >95% under agreed operating conditions
• Stability: continuous supply temperature stability within ±5°C
• Controllability: temperature/heat capacity adjustable to match spray tower process
• Operational safety: stable, safe operation with defined protection logic and alarms

• Stable spray tower hot air supply with high cleanliness and consistent performance
• Lower long-term fuel cost enabled by high thermal efficiency
• Improved production stability through tight temperature control and continuous supply
• Reduced project risk and faster ramp-up via full turnkey EPC execution
• Easier maintenance and safe operation for sustainable plant performance

Need a high-cleanliness hot air system for a spray tower?
Get a turnkey EPC proposal tailored to your tower, target temperature, and fuel conditions.
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