SAFE-Tank® Double Wall 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.
For additional information on storing hydrochloric acid, including recommended storage tanks and components, download our Hydrochloric Acid Guide below. Or, download the Tank Designs & Specifications Guide to see all of our chemical storage products.
| Chemical | Resin Type | Specific Gravity Rating | Fitting Material | Gasket Material | Bolt Material |
|---|---|---|---|---|---|
| Hydrochloric Acid ≤ 37% | XLPE | 1.9 | PVC | EPDM | C-276 |
Tank Specifications
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
PolyScrub™ and PolyScrub Plus™
Individually designed to support the reduction of dangerous fumes into the environment.
Technical Overview
Tank
IMFO® Vertical Flat Bottom of XLPE:
1,000–13,650 gallons
1.9 spg rating
Non-IMFO® alternative:
Standard Vertical Flat Bottom XLPE:
1,000–13,650 gallons
1.9 spg rating
SAFE-Tank® XLPE:
1,500–8,700 gallons
1.9 spg rating for primary tank
Spg ratings for secondary tanks ≥ 3,000 gallons may be equal to or 1 less spg than primary tank.
All other tank sizes must equal primary tank spg rating.
Secondary containment
Recommend SAFE-Tank® secondary XLPE as shown above
Non-SAFE-Tank® Alternatives:
PPC secondary containment basin
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
Required use of flexible connections with fittings on lower third of sidewall
Allows for lateral and vertical expansion and contraction of the tank
Reduces pump and piping vibration stress on the tank
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
PPC IMFO® tank pad or smooth concrete, asphalt or steel foundation designed to accommodate IMFO®, SAFE-Tank® or vertical tank
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