Differential Scale Loop Test Bench

  • Differential Scale Loop DSL - a fully automated test bench for studying the process of scale formation and pipeline clogging

    Application

    • Investigation of deposits on the walls of pipelines, water pipes and field equipment
    • Invention and testing of inhibitors
    • Optimizing inhibitor concentration
    • Optimization of water treatment
    How the system works

    3 HPLC pumps are used to carry out the test. Two solutions (anion solution and cation solution) are mixed with a third liquid, which contains a given amount of inhibitor. The two brine solutions are mixed and pumped through the test line. Due to the increase in solubility, at least one salt begins to precipitate and crystallize on the walls of the pipeline. Thus, the diameter of the test pipeline is reduced.

    Depending on the test conditions, a laminar oil flow is formed in the pipeline. Any laminar flow obeys the Hagen-Poiseuille law. A corollary of this law states that the change in pressure in a pipeline is inversely proportional to the value of the radius of the pipeline to the fourth power. This means that any, even slight change in the diameter of the pipeline leads to a pressure drop in the pipeline.

    The DSL test bench provides the ability to measure a given pressure drop in a pipeline and, by processing the measurement data, obtain information about the beginning of the formation of salt deposits.

    Installation diagram
    Standard delivery set:
    • Installation of DifferentialScaleLoop, main block – 1 pc.
    • Computer controlled HPLC pump (2 pistons, 1 back pressure piston) – 3 pcs.
    • Absolute pressure sensor – 1 pc.
    • Differential pressure sensor – 1 pc.
    • Back pressure valve – 1 pc.
    • Built-in burst disc – 1 pc.
    • Tray for draining the solution – 1 pc.
    • Set of tools for pumps: small-sized manual syringe pump for pumping; plunger adapter and suction tube; set of keys – 1 pc.
    • Computer-controlled dry-air thermostat with the ability to measure the temperature inside the pipeline and display the temperature on the display – 1 pc.:
    • Thermal converter type PT100 – 2 pcs.
    • Measuring capillary (stainless steel) 3 m long – 3 pcs.
    • Sample containers – 10 pcs.
    • A set of spare parts for a year of operation, including additional measuring capillaries made of aluminum, stainless steel, copper - 1 set.
    • Workstation based on the latest generation PC – 1 set.
    • Software for automated control of system operation – 1 copy.
    • A set of accompanying documentation in Russian and English.
    • Program for periodic metrological certification of the system.
    Optional equipment:
    • Option "Medium pressure"
      • Increased operating pressure range to 172 bar
    • Option "High Pressure":
      • Increased pressure range up to 400 bar
      • Increasing differential pressure range up to 20 bar
    • Dedicated test chamber to simulate filter clogging
      • Integrated test chamber for scale deposits and filter clogging, replaceable filter and replaceable sample container, stainless steel
      • Suitable for investigating filter clogging
      • Possibility of sampling salts for third-party analysis (Raman spectroscopy, radiography)
      • Stainless steel filtration frit 2 µm / 5 µm (2 pcs.)
    • High pressure sample containers
      • Stainless steel sample container (up to 25 pcs.)
    • Extended Low Temperature Range
      • Optional liquid thermostat for low temperature testing
      • Thermostat-cryostat, temperature range: -25 .. +150 °C
      • Optional test capillary and optional sample preheating option
    • Coriolis flow meter
      • Built-in flow meter for highly accurate measuring conditions
      • Coriolis flow meter, automatic flow control
      • Flow measurement accuracy: ±0.2%
    • Flow pH sensor
      • Integrated pH sensor at the outlet of the test line
      • Measurement of pH of the medium and automatic recording of results during the test
      • pH range: 0 … 14 pH
      • Automatic test restart to restore pH balance
      • Includes 3 calibration buffers
    • Flow sensor for measuring electrical conductivity
      • Built-in sensor for measuring electrical conductivity at the outlet of the pipeline
      • Electrical conductivity measurement and automatic recording of results during the test
      • Electrical conductivity range: 0 … 1000 µS/cm
  • Specifications
    • Temperature range in the test line: +30 to +250 °C (extended temperature range on request).
    • Pressure range from 1 to 45 bar (extended range up to 200 or 400 bar optional).
    • Pump flow: from 0.1 to 5 ml/min.
    • Maximum flow rate of the fluid under study: up to 10 ml/min.
    • Test line diameter: 0.75mm.
    • Replaceable measuring capillary: 2 spare capillaries (stainless steel / other material on request).
    • Possibility of choosing between pre-mixing the inhibitor with the sample or directly injecting the inhibitor into the test cycle.
    • Fully heated pipes and branch pipes of the preparation lines are made of Monel.
    • Compact aluminum housing.
    • WinDSL software with capabilities:
      • Automated collection, processing and visualization of data;
      • Long-term round-the-clock testing;
      • Automatic system cleaning;
      • Possibility of testing salt deposit dissolvers with automatic dosing of reagents (optional);
      • Export data to prepared report templates.
    • Voltage 230 V, frequency 50 / 60 Hz, maximum power 2500 W.
    • Differential Scale Loop Test Bench
  • Differential Scale Loop Test Bench