VOC Emission Control
Integrated strategies — recovery systems, advanced sealing, thermal management & structural upgrades to minimize evaporative losses
Primary Measures
Recovery System
- Professional vapor recovery unit (VRU) — captures VOCs via recovery valves and collection pipelines.
- Reliquefaction & reinjection — converts captured vapors back into liquid product, reducing losses.
- Dual benefit — cuts air pollution while improving economic efficiency through product conservation.
- Core approach for modern terminals — mandatory in many environmental regulations.
Enhance Sealing Performance
- Double‑seal floating roof design — elastic primary seal (pressure plate) + secondary tongue‑shaped seal ensures tight tank wall contact.
- High‑elasticity edge steel plates — automatically compensate for gaps, drastically reducing vapor space.
- Regular seal inspection & repair — immediate remediation of damaged components maintains integrity.
- Minimized evaporative area — advanced sealing cuts fugitive emissions at the source.
Regulate Storage Temperature
- Water cooling system — removes solar heat absorbed by roof and walls, reducing gas space temperature swings.
- Reflective coatings — white or aluminum‑pigmented paint increases solar reflectance, lowering surface temperature.
- Thermal insulation panels — reduce heat transfer, stabilizing internal temperature.
- Minimized breathing losses — stable thermal environment significantly suppresses VOC volatilization.
Optimize Tank Structure
- Floating roof / internal floating roof — moves with liquid level, drastically reduces vapor space volume vs. fixed‑roof designs.
- Synergy with high‑efficiency seals & upgraded breather valves — transforms fugitive emissions into controlled recovery.
- Multi‑measure integration — structural optimization combined with recovery systems achieves near‑zero VOC release.
- Regulatory compliance & sustainability — aligns with global emission reduction targets and circular economy principles.