Dosing skid — Centrifugal

Centrifugal Dosing Skid LNS-DZ-CEN

A skid-mounted centrifugal dosing system for medium- to high-flow chemical feed, additive injection, inline blending and controlled liquid transfer, designed for continuous-duty applications where smooth, non-pulsating delivery is preferred.

Product overview · LNS-DZ-CEN

Description

A skid-mounted centrifugal dosing system for medium- to high-flow chemical feed, additive injection, inline blending and controlled liquid transfer, designed for continuous-duty applications where smooth, non-pulsating delivery is preferred.

Typical media

  • Ethanol and oxygenates
  • Methanol
  • Fuel additives
  • Dyes and markers
  • Lubricity improvers
  • Water-treatment chemicals
  • Cooling-water and boiler-water chemicals
  • Selected solvents and process liquids
  • General industrial liquid additives

Design

Key features

  • End-suction, close-coupled or process centrifugal pumps
  • Smooth, continuous flow
  • Single, duty/standby or multi-working-pump configurations
  • Common or independent suction manifolds
  • Independent flowmeter for each dosing line
  • Motorized or pneumatic flow-control valve
  • VFD capacity control option
  • Pressure gauge and transmitter
  • Discharge check valve
  • Injection valve or quill
  • PLC/HMI or local junction box
  • Remote PLC/DCS/SCADA interface
  • Hazardous-area equipment where required

Engineering approach

  • Maintaining adequate NPSH margin
  • Stable operation near the selected pump operating range
  • Low suction and discharge losses
  • Accurate independent flow control
  • Reliable check-valve and injection performance
  • Acceptable viscosity and vapor-pressure conditions
  • Controlled response during ratio or batch dosing
  • Final pump selection is based on the minimum, normal and maximum flow, differential pressure, static head, piping losses, fluid density, viscosity, vapor pressure, temperature and available suction conditions

Advantages

  • Suitable for medium- and high-flow dosing
  • Smooth delivery with minimal pulsation
  • Efficient multi-line blending architecture
  • Independent flow measurement and control
  • Flexible single or common-standby arrangements
  • Good fit for fuel-terminal and gantry systems
  • Compact skid-mounted construction
  • Reduced field installation work
  • Easy integration with plant automation

Technical characteristics

Specifications

Product familyLNS-DZ Series — skid-mounted dosing systems
ModelLNS-DZ-CEN — Centrifugal Dosing Skid
Pump technologyCentrifugal
Flow tendencyMedium to high
Pressure capabilityLow to moderate
Flow characterContinuous / smooth
Corrosive liquid suitabilityConditional by material of construction
Very low-flow accuracyLimited
High-pressure injectionLimited
High-flow blendingExcellent
Cleanliness sensitivityModerate
Primary capacity controlFlow-control valve / VFD
Pulsation controlNormally not required
Typical skid dutyBlending / transfer
Main design driverHydraulics / flow

Selection note: Final pump and skid selection is based on the chemical identity, concentration, minimum/normal/maximum flow, suction conditions, discharge pressure, density, viscosity, vapour pressure, temperature, solids content, required accuracy, turndown, materials and hazardous-area classification.

Where it's used

Typical applications

  • Fuel terminals
  • Loading gantries
  • Refineries
  • Tank farms
  • Petrochemical plants
  • Water-treatment plants
  • Power and utility systems
  • Industrial chemical plants
  • Inline blending systems

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