OptiMAXX OptiPure S3
The OptiMaxx OptiPure S3(3rd gen) is a fully skid-mounted, modular membrane-based biogas upgradation unit.
It is the only system in the Indian market with patent-filed DewTecPac™ process control system proven to deliver segment-best CH₄ purity from Day 1 of commissioning – proven across plants, including for industry leaders such as Reliance Industries Limited.
OptiPure: Key Performance Claims
upto 0%
CH₄ purity
on-spec from Day 1
0 of India’s largest CBG plants
commissioned with 31,610 Nm³/hr raw biogas capacity
0 Nm³/hr
of raw biogas capacity; Cumulative order book
0+ hrs
Cumulative operational hours completed – delivered on spec gas from day-1
Process flow — OptiPure S3
The OptiMaxx Biogas upgradation unit is a fully automated system equipped with multiple interlocks to ensure system protection and maintain consistent purity and recovery. The unit generates two gas streams: a product gas with a high methane concentration and an off-gas stream with high CO2 levels. The off-gas can either be utilized in CO2-liquefaction plants or vented. The product gas has a pressure of >11 Barg.
Equipment Modules — Detailed Description
| Module | Equipment | Function & Key Specifications |
|---|---|---|
| DewTecPac™ Stage 1 |
Shell & tube heat exchangers, knock-out vessels, moisture separator / coalescer |
Patent-filed GPS technology. Cools and conditions the gas stream post-OptiScrub. Removes bulk moisture, controls temperature and flow, protects downstream dry-media beds. |
| OptiScrub |
Vessels filled with Iron-oxide for H2S removal & with Activated Carbon for VOC removal |
H₂S polishing: <3.75 mg/Nm³ outlet. Lead-lag pair allows online media change without plant shutdown. Fully dry media — no chemicals, no effluent. |
| LP Compressor |
Low pressure compressor, VFD, FLP motor, inter-stage coolers & separators (1 Working) |
Raises gas pressure from ~0.3 Barg (digester) to 13–15 Barg (membrane feed). Oil-free specification is mandatory to protect polyimide membranes. |
| DewTecPac™ Stage 2 |
Coalescing filter, heat exchangers, knock-out vessel |
Final conditioning before membrane separation. Achieves dewpoint of −65°C. Removes residual aerosols and particulate. |
| Membrane CO₂ Removal |
2 or 3-stage UBE polyimide hollow-fibre membranes; permeate recycle system; pressure control valves |
CO₂ permeates at ~20× rate of CH₄. Achieves >99% CH₄ purity, upto 99.5% recovery, product pressure >11+ Barg. |
| DewTecPac Gas Analysis & Control |
Online CH₄/CO₂/H₂S/SO₂ analyser, flow totaliser, dew point sensor, pressure & temperature transmitters, PLC-based control panel with HMI touchscreen |
Continuous real-time product quality monitoring. SCADA integration inputs will be offered. Remote monitoring and control can be offered. Synchronises biogas unit with upstream/downstream systems and protects equipment & membranes. |
For further details, get in touch with us
Dry Media Pre-Treatment
H₂S and VOC pre-treatment is handled by the purpose-configured OptiScrub 3-vessel dry media system. The design is compact, chemical-free and supports online media change without plant shutdown.
| Vessel | Role | Media | Inlet Design Basis | Configuration |
|---|---|---|---|---|
| Lead | H₂S Removal | Iron hydroxide compound | Up to 1000 ppm H₂S | Lead-Lag pair — online changeover |
| Lag | H₂S Removal | Iron hydroxide compound | Up to 1000 ppm H₂S | No plant shutdown required |
| VOC Removal | Activated Carbon | Up to 10 ppm VOC | Dedicated vessel; independent |
Key Advantages
- Fully dry media process: No chemicals, no effluent, no wet-scrubbing infrastructure
- Lead-lag vessels: Online media change without plant shutdown or production loss
- Power consumption: Nil power consumption compared to scrubber systems in market.
- Dedicated VOC/siloxane vessel: Independently sized and serviceable
- First fill of all media included in scope
- Protects UBE polyimide membranes from H₂S, siloxanes and trace contaminants
- The system can be designed for NH3 removal too
For further details, get in touch with us