• Biogas Membrane Separation Purification System to Natural Gas (CNG)
  • Biogas Membrane Separation Purification System to Natural Gas (CNG)
  • Biogas Membrane Separation Purification System to Natural Gas (CNG)
  • Biogas Membrane Separation Purification System to Natural Gas (CNG)
  • Biogas Membrane Separation Purification System to Natural Gas (CNG)

Biogas Membrane Separation Purification System to Natural Gas (CNG)

Decarburization Technology: Membrane Separation
Methane/CH4 Target Value: 95~99% as Required
CNG Pressure Output: 20MPa or Other as Required
Treatment Capacity: 50~5000 Nm3/Hr
Transport Package: Original Packing
Specification: Complete System
Customization:

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Basic Info.

Trademark
ALONG BIOGAS
Origin
China
HS Code
8486909000
Production Capacity
100 Sets/Year

Product Description


Biogas Membrane Separation Purification System to Natural Gas (CNG)

After two-stage desulphurization processes, then go through our GasDec system (Membrane Separation) for carbon removal, biogas could be upgraded to make CNG, for vehicle or going into national pipeline network.

The gas quality after upgrading as below:
Item Quality Index Comments
High thermal value MJ/m3 >31.4 In the specific geographical area for vehicle driving, under the highest operation pressure, the water dew point shouldn't be higher than -13 degree.C; When lowest ambient temperature lower than -8 degree.C, the water dew point should be 5 degree.C lower than the lowest temperature.
CO2 % ≤3.0
Total Sulfur mg/Nm3 ≤200
H2S mg/Nm3 ≤15
O2 % ≤0.5
Comments: The above data is subject to clients' actual requirements.

Procedures of our biogas upgrading system:

 
1, Primary Filter
The saturated water and partial particles in the raw digester gas are removed through the primary filter;

2, Boosting, Primary desulphurization
The biogas from primary filter is boosted by blower. Then after cooling, the biogas is fed to wet type desulphurization system for primary removal of Hydrogen Sulfide, to make H2S content lower than 200 mg/Nm3;
 
3, Fine desulphurization
The content of Hydrogen Sulfide is made lower than 50 mg/Nm3 through dry type desulphurization system;
 
4, Impurities Removal, Fine Cleaning System
The new dust and impurities in biogas could be removed through the Separator; Then delivered to Fine cleaning system for removals of water and tiny particles in order to protect membrane and guarantee its life-time;

5.  First MS (Membrane Separation)
The high quality compressed biogas goes into the first MS system through gas-distributing pipeline. The exhaust gas could be gathered or discharged into atmosphere;

6.  Secondary MS (Membrane Separation)
The gas out of First-MS goes into Secondary MS system for final decarburization. The exhaust gas would totally return to the inlet of biogas compressor. Thiophane is added into the cleaned gas, after CNG compressor, through dispenser, to be delivered to gas station by tank lorry;

Main equipment list of our upgrading system:

1.  Main non-standard equipment
Item Equipment Name Specifications Qty Comments
1 Primary Filter   1Unit  
2 Primary Cooler   1Unit  
3 Wet Desulphurization Tower   1Unit  
4 Secondary Filter   1Unit  
5 Dry Desulphurization Tower   1Unit  
6 Separator   1Unit  
7 Pregnant Groove   1Unit  
8 Regeneration Groove   1Unit  
9 Barren Liquor Groove   1Unit  
10 Sulfur Froth Groove   1Unit  
11 Underground Groove   1Unit  
12 Fine Cleaning System   1 Set  
13 First MS Assembly   1 Batch Imported
14 Second MS Assembly   1 Batch Imported
15 Buffer Tank   1 Unit  

2.  Main Operation Equipment List
Item Equipment Name Material QTY Comments
1 Biogas Blower Case Iron 2 Units With back-up
Anti-explosion
2 Desulphurization Pump Case Iron
+SS304
2 Units With back-up
Anti-explosion
3 Regeneration Pump Case Iron
+SS304
2 Units With back-up
Anti-explosion
4 Sulfur Froth Pump Case Iron
+SS304
2 Units With back-up
Anti-explosion
5 Supplement Pump Case Iron
+SS304
1 Unit Anti-explosion
6 Biogas Compressor Case Iron 1 Unit Anti-explosion, Variable frequency
7 CNG Compressor Case Iron 1 Unit Anti-explosion, Variable frequency
8 Gas Dispenser   1 Unit Single line, Double nozzles & measuring
9 Gas Odorization   1 Unit  

3.  Instruments & controlling
Item Product Name QTY Comments
1 PLC Controlling Cabinet 1 set  
2 PLC system 1 set  
3 Operator Station 2 units  
4 Complete On-line UPS 1 unit  
5 Flow-meter 2 units  
6 On-line analyzer 2 units  
7 Pressure transmitter 1 batch  
8 Pressure gauge 1 batch  
9 Temperature gauge 1 batch  
10 RTD 1 batch  
11 Alertor 1 batch  
12 Electrical control box 1 batch  

Biogas Membrane Separation Purification System to Natural Gas (CNG) Biogas Membrane Separation Purification System to Natural Gas (CNG) Biogas Membrane Separation Purification System to Natural Gas (CNG) Biogas Membrane Separation Purification System to Natural Gas (CNG)
 

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