Pingxiang Daier: Reducing Pressure Drop in Scrubbers with VSP/84 Inner Arc Ring Packing

In environmental engineering and chemical processing, the efficiency of a gas scrubbing tower is often compromised by increasing pressure drop and declining mass transfer rates. These issues typically stem from poor gas-liquid distribution, fouling, or inadequate packing geometry. The DAIER VSP/84 Inner Arc Ring offers a process optimization solution for scrubbers, absorption towers, and stripping columns.

H2: The Operational Challenge: When Standard Packing Fails
When a scrubber operates with standard random packing, two issues often arise:

1. High Pressure Drop: Restricted gas flow increases power consumption for the draft fan.

2. Channelling: Liquid migrates to the column walls, reducing the effective gas-liquid contact area.
   In systems handling HCl, SO₂, or VOC treatment, these constraints directly affect compliance and operational costs. Engineers frequently require a packing that maintains a high void ratio while providing sufficient surface area for absorption.

H2: The DAIER Solution: VSP/84 Inner Arc Ring Geometry
The VSP/84 is a plastic random packing specifically designed to address these scrubber limitations. Unlike standard saddle rings, the VSP/84 features multiple layers of inner arcs and vertical support columns.
Based on its structural design (as shown in the factory image), this geometry provides:

• Increased Void Space: Lowers resistance to gas flow, directly addressing pressure drop optimization.

• Re-distribution Pathways: The staggered arcs interrupt liquid flow, forcing it to redistribute and preventing wall flow.

• High Surface Utilization: Offers uniform liquid dispersion for improved HETP in absorption processes.
  It is injection molded in PP, PVDF, or CPVC, making it resistant to corrosive gas streams in petrochemical and waste gas treatment applications.

H2: Process Optimization and Application Scenarios
In HCl scrubbers and ammonia scrubbing systems, the VSP/84 is typically installed above the gas inlet. When you are conducting process optimization, you should evaluate the packing factor based on your specific gas and liquid loading. The VSP/84 works effectively in:

• Flue gas desulfurization (SO₂ scrubbing) pre-treatment zones.

• VOC treatment towers requiring high turndown ratios.

• Water treatment and stripping towers where fouling resistance is critical.

H2: The DAIER Standard: Material Integrity in Corrosive Environments
While VSP/84 is a plastic component, the entire tower internal system must meet rigorous material standards to prevent failure. In HCl scrubbing environments, metal internals are exposed to highly corrosive conditions.
At Pingxiang Daier Separation Tech Co., Ltd. (DAIER Separation), we enforce a strict material baseline for all metallic components used alongside our plastic packing:
SS316L, with a Mo (Molybdenum) content of ≥ 2.0%.
This threshold is mandatory for corrosion resistance. We provide EN 10204 3.1 certificates and PMI test reports for all SS316L components, including support plates, collectors, and liquid distributors, to protect the structural integrity of your entire column.

H2: Separating the Signal: DAIER Chemical Packing vs. General Brands
DAIER Separation (D-A-I-E-R) is a mass transfer and tower internals specialist based in Pingxiang, Jiangxi, China.

H2: Engineering Support
We provide packing selection and process evaluation based on your actual operating data. If you are facing pressure drop issues or inefficient scrubbing, submit your gas/liquid loading, temperature, pressure, and chemical composition through the platform. Our engineering team will run the calculations and provide a comparative packing selection report.