Diaphragm seal with threaded connection MCH series

Product Overview
Mairui CO2 separation membrane modules use polysulfone hollow fibers for selective CO2/CH4 separation. CO2 preferentially permeates through the membrane while the non-permeate stream is enriched in methane. Module selection and process configuration are determined by feed composition, capacity, operating pressure and temperature, product specification and methane recovery targets.

How It Works
Polysulfone hollow fiber membranes provide higher CO2 permeability relative to CH4; the permeate stream becomes CO2-rich. Systems may be arranged in single-, two- or three-stage configurations to meet product purity and recovery requirements.

Models & Specifications
Connection Type: Rc (PT)

• MCH-3032A | Length L: 856 mm | OD: 110 mm | ID: 85 mm | Feed/Retentate/Permeate: 1/2" | Weight: 6.0 kg
• MCH-4040A | Length L: 1080 mm | OD: 150 mm | ID: 114 mm | Feed/Retentate/Permeate: 1" | Weight: 15 kg
• MCH-4160A | Length L: 1564 mm | OD: 160 mm | ID: 125 mm | Feed/Retentate/Permeate: 1" | Weight: 19 kg
• MCH-6160A | Length L: 1580 mm | OD: 200 mm | ID: 157.5 mm | Feed/Retentate/Permeate: 1.5" | Weight: 26 kg
• MCH-8140A | Length L: 1080 mm | OD: 280 mm | ID: 220 mm | Feed/Retentate: 1.5" | Permeate: 2" | Weight: 44 kg
• MCH-8160A | Length L: 1580 mm | OD: 280 mm | ID: 220 mm | Feed/Retentate: 1.5" | Permeate: 2" | Weight: 55 kg

Membrane-Bank Configuration

• Multiple modules can be combined into membrane banks to scale capacity.
• Quantity and arrangement are defined by feed and product requirements and are project-specific.
• Two-stage or three-stage arrangements can be applied to balance product specification and methane recovery.

Selection Factors

• Feed gas composition
• Feed gas flow (capacity)
• Operating pressure & temperature
• Target product gas purity
• Methane recovery requirement

Feed Gas Requirement
H2S content <20 ppm. Inlet gas must meet Mairui membrane module inlet requirements for contaminants, temperature and pressure.

Related Applications

• Oil & Gas — inerting, blanketing, purging, CO2 removal and gas dehumidification.
• Biogas upgrading & biomethane — pretreatment and upgrading of biogas for grid injection or Bio-CNG.
• CO2 removal & CCUS — membrane-based separation for natural gas, biogas and selected industrial gas streams.

Technical specifications

• Material: Polysulfone hollow fibers
• Separation target: Selective CO2/CH4 separation (CO2 permeates preferentially)
• Connection Type: Rc (PT)
• Feed gas H2S tolerance: <20 ppm
• Module scaling: Modules can be combined into membrane banks; two- or three-stage processes possible
• Models and key dimensions/specifications:
  • MCH-3032A — Length: 856 mm; OD: 110 mm; ID: 85 mm; Feed/Retentate/Permeate: 1/2"; Weight: 6.0 kg
  • MCH-4040A — Length: 1080 mm; OD: 150 mm; ID: 114 mm; Feed/Retentate/Permeate: 1"; Weight: 15 kg
  • MCH-4160A — Length: 1564 mm; OD: 160 mm; ID: 125 mm; Feed/Retentate/Permeate: 1"; Weight: 19 kg
  • MCH-6160A — Length: 1580 mm; OD: 200 mm; ID: 157.5 mm; Feed/Retentate/Permeate: 1.5"; Weight: 26 kg
  • MCH-8140A — Length: 1080 mm; OD: 280 mm; ID: 220 mm; Feed/Retentate: 1.5"; Permeate: 2"; Weight: 44 kg
  • MCH-8160A — Length: 1580 mm; OD: 280 mm; ID: 220 mm; Feed/Retentate: 1.5"; Permeate: 2"; Weight: 55 kg