Storage Tank and Vessel PU Insulation Solution
High-output polyurethane spray and cavity pouring systems engineered for petrochemical tanks and refrigerated vessels, eliminating corrosion under insulation (CUI).
High-Performance Polyurethane Solutions for Storage Tanks & Refrigerated Vessels
Storage tanks for heated bitumen, crude oil, beer fermentation, and liquefied natural gas (LNG) demand thermal protection that prevents temperature drift while protecting massive steel assets from catastrophic corrosion. Traditional insulation methods—such as banding pre-formed curved foam blocks or mineral wool under protective aluminum cladding—inevitably permit ambient moisture and rain ingress into the annular gap. This trapped moisture causes aggressive Corrosion Under Insulation (CUI), degrading tank walls invisibly until rupture occurs. Haifeng’s tanks and vessels polyurethane insulation solution injects or sprays high-density closed-cell formulations directly against primed steel walls. Chemically fusing to the metal with >0.35 MPa adhesion, it eliminates annular air gaps, repels moisture drive, and delivers certified thermal barriers operating from -160°C up to +120°C.
Total Prevention of Corrosion Under Insulation (CUI)
In-situ chemical bonding creates an impenetrable seal directly against the steel tank skin, permanently blocking water and oxygen ingress to prevent hidden tank corrosion.
Deep Cryogenic Stability (-160°C Containment)
Specialized low-temperature elastomeric formulations flex under thermal contraction stress without cracking or cell rupturing, ensuring boil-off gas rates remain minimal.
Haifeng delivers complete field application packages—from mobile high-output proportioners and heated extended hoses to automated tank crawler robots—enabling industrial insulation contractors to execute mission-critical tank projects safely. Haifeng provides equipment and process integration, on-site commissioning and operator training, a 1-year machine warranty and long-term spare parts support. Site construction and material supply follow the project delivery scope.
Production Workflow for Storage Tank & Vessel PU Insulation Machine System
The workflow for Storage Tank & Vessel PU Insulation Machine System covers Surface Prep, Thermal Conditioning, In-Situ Application, Cladding & Seal. Confirm the sequence and equipment interfaces against the selected material system and product design.
Tank Shell Grit-Blasting & Thermal Priming
The cylindrical tank exterior is grit-blasted to Sa 2.5 cleanliness; anti-corrosive epoxy primers are applied to activate surface chemical bonding.
Precursor Heating & High-Volume Recirculation
Dual proportioner heaters and heated hoses condition polyol and isocyanate streams at 48°C–56°C, ensuring dynamic viscosity balance for rapid high-volume pours.
Dual-Mode High-Pressure Spray or Annular Pouring
For open tanks, spray guns apply multi-pass 25mm layers up to 100mm; for jacketed vessels, injection lances pour timed shots into annular gaps under controlled backpressure.
Technical Specifications
Configuration and application values from the supplied engineering brief. Material properties and project results apply to their stated conditions.
| Technical Parameter | Standard Specification / Value | Engineering Context & Verification |
|---|---|---|
| Target Application | Petrochemical Storage Tanks, LNG/LPG Vessels, Beer Fermenters | Industrial tank thermal envelope & CUI protection |
| Material Matrix | Rigid Polyurethane (PUR) / Polyisocyanurate (PIR) | Cryogenic and high-temperature formulations |
| Operating Temperature Range | -160°C to +120°C | Liquid gas storage to heated bitumen tanks |
| Core Foam Density | 40 – 60 kg/m³ | Optimized for thermal insulation & compression |
| Thermal Conductivity (λ) | ≤0.020 – 0.022 W/(m·K) | ASTM C518 heat flow meter verification |
| Closed-Cell Content | ≥96% | Prevents liquid and vapor moisture transmission |
| Proportioner Fluid Output | 12 – 50 kg/min | High-output capability for large annular cavities |
Storage Tank Insulation Application Gallery
These illustrations show exterior storage-tank insulation surfaces relevant to tank insulation planning. They do not establish the applied material, application method, insulation performance or a named customer project.
Storage Tank Exterior Insulation Illustrations
Reference Haifeng Insulation Equipment
Listed equipment shows its current application configuration. The metering unit, hose, gun or injection head and optional modules are selected for this project.
Key Engineering Advantages
Application-specific process controls, tooling and equipment integration.
100% CUI Corrosion Elimination
Continuous chemical adhesion to steel shells stops water intrusion, permanently preventing corrosion under insulation.
Minimal Boil-Off Gas Loss
Low thermal conductivity (λ ≤ 0.020) preserves cryogenic liquid temperatures, drastically cutting vapor boil-off flare loss.
Dual Application Versatility
Switches easily between open-tank automated spray crawlers and jacketed-tank annular cavity injection probes.
Rapid High-Output Application
Pumps up to 50 kg/min continuously, slashing project scaffolding and insulation scheduling by 50%.
Related Equipment Delivery and Application Cases
Review two supplied cases, their equipment delivery, implementation and application results.
Frequently Asked Questions
Process selection, site conditions and equipment integration.
How does spray PU foam stop Corrosion Under Insulation (CUI)?
Can this system insulate cryogenic storage tanks down to -160°C?
Can automated crawler robots be used with Haifeng proportioners?
What is the typical installation and commissioning timeline on-site?
Discuss Your Insulation Equipment and Application
For Storage Tank & Vessel PU Insulation Machine System, send finished-product drawings or samples, material data, target output, automation needs and factory conditions. Haifeng can use these inputs to discuss the line configuration and technical interfaces.
