Polymer Modified Bitumen Tanks
PMB (Polymer Modified Bitumen) Storage & Mixing Tanks
High-Performance, Electrically Heated PMB Tanks for Advanced Asphalt Production
Our PMB tanks are not simply storage or service tanks, but are engineered as an integral part of the PMB production quality process.
PMB arriving from the production plant is continuously monitored for viscosity and flow, while our advanced mixing and homogenization systems provide real-time alerts if polymer dispersion or product consistency deviates from specifications. This ensures that the user receives consistently high-quality PMB, with automated warnings to prevent off-spec material.
Additionally, these tanks are designed to minimize emissions and odors, with optional closed-to-atmosphere construction, stainless steel ventilation pipes, and stainless steel barrels for fume collection, protecting both operators and the environment..
1. General Design & Construction
- Capacities: 30 m³ – 110 m³ (custom volumes available)
- Body Material: High-grade carbon steel with optional stainless-steel components
- Reinforcement: Structural stiffening frames for high-temperature operations
- Corrosion Protection: Internal anti-corrosive coating + sulphur-resistant ceiling coating (optional)
- Top Walkways: Safe access with guard rails for maintenance and inspection
- Anti-Odor Solutions: Closed tank design, stainless ventilation, fume barrels
- Insulation:
- 200–300 mm foiled rockwool
- Optimized to minimize heat loss even during extended heating cycles
2. Heating System
PMB tanks use a multi-stage electrical heating system designed for high viscosity stability and precise thermal control.
- Heaters: 6–24 kW flanged electrical heaters (customizable)
- Temperature Control: PID-based automation with adjustable set-values
- Energy Efficiency: Smart heater sequencing reduces power consumption
- Safety: Over-temperature protection, heater anti-dry-run safety logic
3. Mixing & Agitation System
A robust mixing system is essential for polymer dispersion and PMB stability.
- Agitator Motor: 11–22 kW heavy-duty gearmotor (Siemens/SEW)
- VFD/Inverter: Smooth start/stop and viscosity-dependent speed adjustments
- Shaft & Impeller: High-strength steel with PMB-optimized blade geometry
- Bearing Design: High-temperature bearing arrangement for long service life
- Access: Top-mounted service hatch for mixer maintenance
4. Process Pipelines & Components
- Ventilation System:
- Stainless steel A-type vent pipes (optional)
- Prevents moisture ingress and ensures safe pressure equalization
- Sample Valves:
- 1″ and 2″ BSP/ANSI 150 mounting options
- Adaptor flanges available for already-manufactured tanks
5. Automation & Control System
- PLC/HMI Control with remote access and monitoring
- Centralized PLC-based automation ensures safe and stable PMB operation.
Standard Features
- Tank temperature control
- Mixer ON/OFF with frequency inverter
- Level indicators (min, contionous, max, high-high level)
- Heater sequencing & protection
- Emergency stop logic
Optional Features
- High-Level Audible Alarm
Loud vocal alarm warns operators during filling to prevent overflow. - Mixer High-Current Visual Alarm
Light indicator warns when the agitator draws abnormal current. - Mixer Temperature Set-Value Control
Dedicated temperature range control for polymer stability. - Data Logging & Remote Monitoring
SCADA integration, trend graphs, heating/mixing logs. - Operator Panel Options:
7″ / 10″ touchscreens with multilingual interface. - Anti-corrosive & sulphur-resistant internal coatings
- Curved roof to minimize condensation
6. Safety & Compliance
- Static & Structural Calculations: For high-temperature operations and high-viscosity contents
- Ventilation Calculations: Ensures proper airflow and fume management
- Vacuum & Pressure Relief Valves: Designed per EN/ASME standards
- Pressure/Vacuum Safety: Prevents overpressure or implosion events
- Compliance: EN 14015, CE/UKCA, ISO welding standards, NDT reports available
