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CO2 Mass Flow Meter for Carbon Capture Systems
Quick Answer: For dense phase and supercritical CO2 in carbon capture systems, a Coriolis mass flow meter measures true mass flow in kg/h directly. Silver Automation Instruments supplies the SICOR series, built for high pressure up to 100 bar and wet CO2 service. You send us your pressure in bar, temperature in degree Celsius, pipe size in DN, and maximum flow rate, and we return a specific model and price.
Why a Coriolis Meter Fits CO2 Capture Better
Inside a post-combustion capture plant the CO2 stream is never dry and its density shifts with small pressure changes. A volumetric meter like an orifice plate or vortex adds a compensation loop. You measure temperature and pressure, calculate density, then get mass flow. But on a real site, when the amine stripper pressure nudges from 1.6 bar to 1.9 bar, the density changes by over 15 percent and the mass flow reading drifts. Coriolis meters skip that calculation. Two U-tubes vibrate and the phase shift gives mass flow directly. We have seen a test skid in Indonesia where a vortex meter underreported daily CO2 mass by 4.2 percent compared to a weighbridge. After they swapped in a SICOR-DN25 Coriolis meter the error dropped to 0.3 percent. That matters when carbon credits depend on verified tonnes stored.
Wet CO2, Sour Gas, and Material Choices
Carbon capture streams carry water vapor after the stripper and often traces of H2S. Standard 316L bodies can corrode. Silver Instruments offers NACE MR0175 compliant wetted parts in duplex stainless steel or Hastelloy C22. For a gas processing site in Oman handling 2 percent H2S we supplied a SICOR-DN40 with Hastelloy tubes and a PFA-lined sensor housing. The meter is still running after 14 months with no pitting. But here is the thing, you must tell us the H2S partial pressure. If it is below 0.3 psi we can stick with 316L and save you cost. We do not sell materials you do not need.
Model SICOR: What Comes Standard
The SICOR series is a U-tube Coriolis mass flow meter with 0.2 percent accuracy of rate. It outputs mass flow, density, and temperature via 4-20 mA HART and Modbus RTU. The transmitter is IP67, and for ATEX Zone 1 areas we add Ex d housing. You do not need a separate flow computer. The meter totals mass internally and you read it over RS485. For a pilot plant in Australia with a flow range of 100 to 500 kg/h at 85 bar, we shipped a SICOR-DN15 that measured within 0.4 percent of a weigh tank over six batches. That meter replaced a thermal mass flow meter that was reading 18 percent low because of wet gas. In practice, thermal mass meters need dry single-phase gas. Once moisture condenses on the sensor bead, the reading collapses.
Installation Details Engineers Skip
Coriolis meters require zero straight run. Instal
FAQ
Can the SICOR measure low-pressure CO2 gas below 10 bar?
For gas at low pressure, a Coriolis meter has limited sensitivity. In that case Silver Instruments can offer a thermal mass flow meter for dry CO2. But for carbon capture the transport stream is almost always compressed to 70 bar or higher. SICOR works well in that dense phase region. Specify your minimum and maximum operating pressure.
Is the meter suitable for custody transfer of CO2?
Yes, the SICOR series can be ordered with OIML R137 class 0.3 and MID certification for EU projects. For clients in Southeast Asia and the Middle East we provide an ISO 17025 traceable calibration certificate. Many CCS pipeline operators use our meter for billing by mass.
What about supercritical CO2 above 31 degree Celsius and 73 bar?
The SICOR handles supercritical CO2 with no density correction. Since mass flow is measured directly, the fluid phase supercritical or dense liquid does not change the reading. We have meters running on supercritical CO2 injection lines in a Middle East enhanced oil recovery project.
How fast can you deliver to a carbon capture site in Malaysia?
For DN15 and DN25 sizes we keep stock in our warehouse. Delivery to Port Klang takes 5 working days by air. For DN50 and larger, lead time is 4 to 5 weeks. Contact us with your required size and we confirm exact availability.
What output signals are needed for a DCS or remote panel?
The meter comes with 4-20 mA HART passive output and Modbus RTU over RS485. You can read mass flow total, instantaneous rate, density, and temperature in your PLC or SCADA. Silver Instruments provides a free Modbus map and commissioning support over video call. No extra gateway needed.
Send us your pressure (bar), temperature ( degree Celsius), pipe size (DN), and required CO2 mass flow range (kg/h or tonnes/day). Email [email protected] with the subject "CO2 mass flow meter inquiry". We will reply with a technical proposal and a price within one working day.