Helium Enrichment Unit using Membrane Technology
Long Service Life Helium Refinement Plant Membrane-Based Helium Purification System
Membrane permeation method utilizes the selective permeability of various gases such as helium, nitrogen, argon, methane, etc., through the membrane. Each gas exhibits different permeation characteristics, allowing for the extraction of helium from natural gas.
LNG BOG Helium Recovery System
Taking LNG BOG as the raw material, the process involves multiple pretreatments and precleaning steps, including but not limited to oil removal, water removal, cryogenic separation purification, recooling, pressurization, drying, decarbonization, etc. The resulting gas mixture contains a higher concentration of helium (He) along with significant amounts of impurities such as methane (CH4) and nitrogen (N2). The process includes membrane separation for helium enrichment, PSA refinement, alloy helium separation,
TSA purification, and other steps to individually remove CH4, N2, and Ne, extracting high-purity helium products.
| LNG BOG Helium-Hydrogen Recovery System Process Input Parameters |
| Pressure |
18~20barg |
| Temperature |
20ºC |
| Raw Helium Flow Rate |
300Nm3/h (7200Nm3/day)(Operational Flexibility: 50%~110%) |
| Composition |
CH |
CH |
N |
H0 |
Hz |
CO2 |
| Composition (mol/mol%) |
2 |
0 |
92.57 |
4.38 |
1.05 |
0 |
Process Output Parameters:
He Product Specifications:
* He Product Purity: 99.999% mol
* He Product Pressure: ≥200 barg
* He Product Yield: ≥97%
H2 Product Specifications:
* H2 Product Purity: ≥99.999% mol
* H2 Product Pressure: 1~50 barg
(adjustable based on hydrogen release temperature)
* H2 Product Yield: ≥95%
Integrated Utilization System for Natural Gas/Coalbed Methane/Shale Gas
Taking natural gas/coalbed methane/shale gas as raw materials, the process involves multiple pretreatments and precleaning steps, including but not limited to oil removal, water removal, cryogenic separation purification, recooling, pressurization, drying, etc. The resulting low-concentration He/H2 gas mixture contains a significant amount of impurities such as CH4 and hydrocarbons.
The process includes low-temperature fractional distillation, membrane separation for He/H2 concentration, PSA refinement for He/H2 purification, alloy He/H2 separation, TSA removal of Ne, etc., to individually remove CH4, N2, etc. The final result is the extraction of high-purity He, electronic-grade H2, liquid C2H6, LPG, and LNG (or pipeline natural gas).
| Integrated Utilization System Process Input Parameters for Natural Gas/Coalbed Methane/Shale Gas |
| Pressure |
60barg |
| Temperature |
25ºC |
| Raw Helium Flow Rate |
50000Nm3/h(Operational Flexibility: 50%~110%) |
| Composition |
CH |
C2H6 |
CHy (x>2) |
N2 |
He |
H2 |
CO2 |
| Composition (mol/mol%) |
86.35 |
7 |
1 |
0.6 |
0.04 |
0.01 |
5 |
Process Output Parameters:
He Product Specifications:
* He Product Purity: 99.999% mol
* He Product Pressure: ≥200 barg
* He Product Yield: ≥97%
H2 Product Specifications:
* H2 Product Purity: ≥99.999% mol
* H2 Product Pressure: 1~50 barg (adjustable based on hydrogen release temperature)
* H2 Product Yield: ≥95%
C2H6 Product Specifications:
* C2H6 Product Purity: ≥99% mol
* C2H6 Product Pressure: ≥2.5 bara
* C2H6 Yield: ≥98%
LPG Product Specifications:
* LPG Product Purity: ≥99% mol
* LPG Product Pressure: ≥2.5 bara
* LPG Yield: ≥98%
LNG Product Specifications :
* LNG Product Purity: ≥99% mol
* LNG Product Pressure: ≥2.5 bara
* LNG Yield: ≥98%
Application: Natural gas
Capacity: 24,000 Nm3/day
Operation pressure: 64-68 barg
He feed concentration: 542 ppm
He enrichment: >10 times
He recovery: >85%
Application: LNG/BOG
Capacity: 380 Nm3/h
He concentration in feed: 13.3%
Purities of (He+H2) > 95%
Recovery of (He+H2) > 96%
Membrane Unit Advantages
• No moving parts, designed for remote unmanned operation.
• Rational layout to reduce volume and weight.
• System designed according to user requirements to increase overall helium recovery rate.
• Operational flexibility, capable of operating within a wide range of flow rates and helium concentrations.
• Quick installation and commissioning-skid-mounted systems can be set up within a few hours.
Product Application
Audited Supplier 
){kind=link}
){kind=link}