Isobutylene Storage — 2-Methylpropene C4H8 Pressure Vessel Selection for Butyl Rubber + MTBE

Storing Isobutylene? Start Here

Isobutylene is a reactive gas widely used in producing butyl rubber, fuel additives, and more. It's a colorless, liquefied gas at room temperature and requires careful handling due to its flammable nature. If you're involved in its storage, understanding the right equipment and safety measures is crucial.

Can you store it in a poly tank?

No, isobutylene cannot be stored in polyethylene tanks. It is a liquefied gas that requires pressure containment, typically in carbon steel or low-alloy steel pressure vessels designed to ASME standards.

Key Issue: Pressure Containment

Isobutylene storage demands pressure vessels due to its gaseous state under normal conditions. Atmospheric tanks, including polyethylene and FRP, are unsuitable as they cannot withstand the necessary pressure.

The safety that actually matters

• Use ASME-certified pressure vessels for storage.
• Ensure proper ventilation in storage areas to prevent gas accumulation.
• Implement full-relief valve protection as per ASME and API standards.
• Maintain hazardous-area classification to prevent accidental ignition.

Common questions

What materials are suitable for isobutylene storage?

Carbon steel and low-alloy steel pressure vessels are standard. Stainless steel is used for high-purity applications.

Can isobutylene be stored at atmospheric pressure?

No, it must be stored in pressurized vessels due to its gaseous state at room temperature.

What gasket materials are recommended?

Viton (FKM) and PTFE/PFA are preferred for sealing in pressure vessels.