The latest addition to the DVS family, DVS Carbon, is the first purpose-built gravimetric sorption analyzer for advanced carbon capture, utilization, and storage (CCUS) applications. In most gas phase carbon capture applications, CO2 often competes with other chemical species at adsorbent sites, including water vapor. The new DVS Carbon enables the measurement of CO2 uptake in real life conditions, controlling both temperature and humidity at a broad range of CO2 concentrations.
With the patented Surface Measurement Systems Ultrabalance measuring real-time mass changes caused by sorption and desorption in the sample, complex carbon capture conditions can be assessed in a range of materials. In addition, the system can be configured to enable a range of different capabilities.
Construction Materials |
Custom built manifold: 316 stainless steel Seals: Viton® and Kalrez® or equivalent Tubing: 1/4 inch 316 stainless steel |
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Gas Flow Control |
High accuracy digital mass flow controllers Wide dynamic range – turndown ratio 1000:1 Carrier gas: dry air, nitrogen, CO2 (<1%) in nitrogen |
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Temperature Control |
Temperature controlled enclosure | Contains entire generation and measurement system Control range: 5 °C to 85 °C Temperature stability ± 0.05 oC over 6 hours Temperature resolution 0.01 °C |
Local sample heater | Control range: up to 300 °C Heating ramp rates: up to 10 °C/min |
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Humidity Generation & Measurement |
Water Reservoirs | 500 mL quick-fit reservoir Heated to avoid evaporative cooling |
Relative humidity range | 0 to 98% RH for 5-60 oC1 0 to 85% RH for 60-85 oC1 |
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Relative humidity generation performance | Accuracy: ±0.5% RH2 Resolution: ±0.1% RH Stability: ±0.1% RH over 6 hours |
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Measurement |
Relative humidity continuous measurement | Range 0-100%RH |
Relative humidity measurement accuracy | ±0.8% RH at 5-40 °C ±1.5% RH at 40-85 °C |
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CO2 Generation and Measurement |
Generation | Concentration range 0-100% vol, atmospheric pressure |
CO2 generation performance | Accuracy: exact 3 or 0.5% vol of inlet concentration4 | |
Measurement |
Patented Speed of Sound sensor | Range: 0-100% vol5 Accuracy: 0.1% vol up to 40% vol, 0.5% above |
In line NIR ppm sensor6,7 | Range 0-0.5% vol Accuracy: 40 ppm5 |
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Weight Measurement |
Ultrabalance Low Mass | Maximum load: 1000 mg Mass change: ±150 mg Resolution: 0.01 μg Balance noise: ≤ 0.3 μg8 |
Ultrabalance High Mass | Maximum load: 5000 mg Mass change: ±1000 mg Resolution: 0.1 μg Balance noise: ≤ 3 μg8 |
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Hardware Configuration |
Standard | Mixing of two gas streams, with controlled humidity and CO2 concentration, respectively9 Switching between different carrier gases e.g. Nitrogen and 400 ppm CO2 |
Advanced | Two heated reservoirs for enhanced humidity generation at high CO2 levels (up to 98% humidity in a pure CO2 stream)9 Mixing and direct measurement of low CO2 concentrations (ppm level) through dedicated instrumentation9 |
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System Information |
Dimensions: 520 mm (W) x 980 mm (H) x 610 mm (D) Weight: 80 kg (180 lb) Electrical: 200-240 V, 50/60 Hz, 1500 VA |
DVS Control Software |
• Live data view and plotting • Full control over all parameters • Powerful custom methods and sequences • Complex isotherm or isobar experiments • Temperature changes in a single experiment • Ramp or step methods available • Intelligent (dm/dt) or time-based step equilibration criteria • Multiple concentration or temperature cycles. • Automated video image or Raman spectra acquisition |
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DVS Analysis Software |
• Automated isotherm calculation • Full kinetics information during experiment • Isotherm modeling • Enthalpy (heat) of adsorption • Permeability and diffusion modeling • Surface area models |
Standard |
Advanced |
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Control software | Advanced analysis suite |
Standard analysis | Isotherm analysis suite |