Non-Circular Flameless Explosion Vent
Product Model: ZD-FV18 (Rectangular Flameless Vent)
Type: Flameless Venting Device for Non-Standard Openings
Material: Rectangular housing (carbon steel/stainless steel). Custom-sized rectangular quenching matrix.
Key Feature: Provides the same flameless venting performance as standard round vents but is designed to fit the rectangular, square, or oval vent openings common on many types of process equipment.
Overview
Many industrial vessels have structural or design constraints that necessitate non-circular vent openings. The Rectangular Flameless Vent solves this challenge. It offers a fully engineered safety solution that adapts the proven flameless technology to fit these shapes, ensuring that equipment with non-standard geometry is not compromised in its explosion protection.
Features & Benefits
Application-Specific Fit: Enables safe flameless venting on equipment where round vents are not feasible.
Uniform Performance: Engineered to ensure even flow distribution and effective quenching across the entire rectangular area.
Structural Integrity: The housing is designed to handle the asymmetric stresses that can occur during venting through a rectangular opening.
Maintains Equipment Footprint: Designed to integrate seamlessly without requiring major vessel modifications.
How It Works
The principle is identical to round vents. A rectangular burst panel ruptures, and the explosion is directed into the rectangular housing. The custom-fitted, rectangular wire mesh matrix provides uniform quenching across its entire cross-section, cooling the explosion products before release.
Specifications (Descriptive)
Available in a wide range of aspect ratios and sizes. Common sizes range from 400x600mm to 1000x1500mm or larger. Mounting is via a heavy-duty flange bolted to the vessel. Selection requires the opening dimensions, required vent area (Av), and explosion characteristics of the material inside.
Q&A
Q: Is the vent area calculation different for rectangular openings?
A: The required vent area (Av) is calculated using the same standards (NFPA 68, etc.) based on vessel volume and dust/gas properties. The device is then designed to provide at least that calculated area within the rectangular form factor.
Q: Can the quenching matrix be as efficient as in a round unit?
A: Yes. The design of the mesh pack and internal flow guides ensures that quenching efficiency is maintained. Computational Fluid Dynamics (CFD) and physical testing are often used to validate the performance of non-standard shapes.
