SAFE-Tank® System
Secondary containment: SAFE-Tank® is recommended where secondary containment is not available.
Hydrochloric Acid
Controlling a chemical – and its fumes
Also known as muriatic acid, hydrochloric acid is used to acidize petroleum wells, remove scales from boilers, aid in ore reduction and serve as a chemical intermediate, among other applications.
This pungent liquid is a strong, highly corrosive acid, and it presents serious storage challenges:
- Hydrochloric acid has an extremely low pH, making it highly corrosive.
- The chemical creates toxic fumes that can deteriorate equipment – and these fumes can be fatal to employees. To control the chemical’s fumes, the tank’s venting system must be exact.
- Tank maintenance can also be an issue because of fuming. Entering the tank must be avoided at all costs, and part replacement must be minimized.
By creating a strong, corrosion-resistant tank system that ties into a scrubber system, all of these issues can be addressed.
The Poly Processing Hydrochloric Acid System
Storing a chemical as corrosive and fuming as HCl takes a truly specialized system. Poly Processing resolves these issues with its tank, venting and fittings solutions.
An Integrally Molded Flanged Outlet, or IMFO®, allows for complete drainage of the tank, which eliminates the need to enter the tank for cleaning. This is imperative when dealing with such a strongly fuming chemical.
The IMFO® design also reduces chances of having to replace parts, as the drainage system is part of the tank’s mold.
Poly Processing’s OR-1000™ surface is ideal for HCl storage. OR-1000™ has proven so effective in containing HCl that systems using it have a 5-year warranty. These tanks bring you the strength of high-density crosslinked polyethylene with an antioxidant surface.
Poly also incorporates airtight lids and customized scrubbers to accommodate the fuming of HCl.
| Chemical | Resin Type | Specific Gravity Rating | Fitting Material | Gasket Material | Bolt Material |
|---|---|---|---|---|---|
| Hydrochloric Acid ≤ 37% | XLPE with OR-1000™ | 1.9 | PVC | EPDM | C-276 |
Tank Specifications
OR-1000™ binds the XLPE with an antioxidant inner surface, which is vital when storing such a corrosive chemical.
IMFO® construction eliminates the need to enter the tank for cleaning, helping employees avoid HCl's toxic fumes.
High-density crosslinked polyethylene (XLPE) ensures the strength of the tank.
Recommended System Components
IMFO® Fittings
Fittings: IMFO® system is recommended.
The B.O.S.S.® Fitting
Fittings: B.O.S.S.® fitting is also recommended to prevent leaks.
FLEXIJOINT® Expansion Joint
Plumbing: requires flexible connections with fittings on lower third of sidewall to accomodate contraction and expansion, and reduce vibration stress on the tank.
Fume-Tight Manway Cover
Fume-tight manway cover: 17", 19" or 24" with EPDM gaskets
Scrubbers
Individually designed to support the reduction of dangerous fumes into the environment.
Technical Overview
Tank
IMFO® Vertical Flat Bottom of XLPE with OR-1000™:
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1,000–13,650 gallons
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1.9 spg rating
NOTE: 230–1,000 gallons do not require OR-1000™.
Non-IMFO® alternative:
Standard Vertical Flat Bottom XLPE with OR-1000™:
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1,000–13,650 gallons
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1.9 spg rating
NOTE: 30–1,000 gallons do not require OR-1000™.
SAFE-Tank® XLPE:
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1,500–8,700 gallons
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1.9 spg rating for primary tank with OR-1000™
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Spg ratings for secondary tanks ≥ 3,000 gallons may be equal to or 1 less spg than primary tank.
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All other tank sizes must equal primary tank spg rating.
NOTE: 55–1,000 gallons do not require OR-1000™.
Secondary containment
Recommend SAFE-Tank® secondary XLPE as shown above
Non-SAFE-Tank® Alternatives:
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PPC secondary containment basin
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Other secondary containment suitable for hydrochloric acid, of adequate size for use
Fittings
Sidewall: Recommend 3˝ maximum B.O.S.S.® fitting
Dome: No restrictions
Plumbing to the tank
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Required use of flexible connections with fittings on lower third of sidewall
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Allows for lateral and vertical expansion and contraction of the tank
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Reduces pump and piping vibration stress on the tank
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Expansion joints must meet the following minimum requirements:
- Axial Compression ≥ .67˝
- Axial Extension ≥ 0.67˝
- Lateral Deflection ≥ 0.51
- Angular Deflection ≥ 14°
- Torsional Rotation ≥ 4°
Venting
See Venting Chart
Foundation and restraints
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PPC IMFO® tank pad or smooth concrete, asphalt or steel foundation designed to accommodate IMFO®, SAFE-Tank® or vertical tank
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No restraint or ladder attachment bands circumscribing the tank are allowed. Cable restraint systems must pass cables over the top of the tank.
Temperature
Product should not exceed 100°F at delivery or during storage to maintain ASTM D1998 design parameters.
Lid
Fume-tight manway cover to manage release of chemical gases
Options
Restraint systems for wind and seismic, level gauges, ladders, heating pads, insulation and engineering stamp