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Biogas upgrading with the DMT-Carborex ® -MS system Utilizing green gas to its full potential Using high selective membranes R. Lems M.Sc., R&D Manager.

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Presentation on theme: "Biogas upgrading with the DMT-Carborex ® -MS system Utilizing green gas to its full potential Using high selective membranes R. Lems M.Sc., R&D Manager."— Presentation transcript:

1 Biogas upgrading with the DMT-Carborex ® -MS system Utilizing green gas to its full potential Using high selective membranes R. Lems M.Sc., R&D Manager DMT Environmental Technology

2 Why biogas upgrading? Digester Gas treatment (desulphurisation) Gas Treatment (upgrading) Green gas (CBG: Compressed BioGas) Mobility Power 40% Biogas Heat 60% CHP Natural gas grid

3 PWS: Pressurized Water Scrubbing –Low investment and operational cost –Low methane slip 0.8 % –High energy efficiency >96% –Proven technology –Robust system –Flexible system –No chemicals Choice for biogas upgrading? Large Scale >500Nm 3 /hr

4 Choice for biogas upgrading? Small scale <750Nm 3 /hr MS: Membrane separation –Lowest investment and operational cost –Lowest methane slip <0,5% –Highest energy efficiency >98% –Highest operational up time –Plug & play configuration –Compact –Simple on/off –No chemicals and/ or water

5

6 Availability and OPEX

7 Biogas CH 4 CO 2 Membrane separation

8 Membrane life time

9 100/100 40/2 5% slip 60/98 50/5 10% slip 10/93

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11 Multi stage

12 Biogas: CH 4 (53,3%) CO 2 (46%) H 2 O (0,1%) N 2 (0,5%) O 2 (0,1%) Mixer Membrane Cascade for upgrading Biomethane CH 4 > 97% OFF Gas < 0.5% CH 4 Recycle Stream Competing membranes High Selective membranes

13 10-16 bar

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15 Utilisation of Biogas

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17 Conclusions Biogas upgrading with high selective membranes is the way to go. –Lowest CAPEX and OPEX –Lowest methane slip <0,2% –Highest energy efficiency >98% –Highest operational up time % flow flexibility

18 Biogas upgrading with the DMT-Carborex ® -MS system Utilizing green gas to the full potential R. Lems M.Sc., R&D Manager DMT Environmental Technology

19 Electric and thermal power consumption

20 Case Nm 3 /hr, 54% CH 4, 500ppm H 2 S 2.97% CH 4 CBG, <0,5% CH 4 emissions 3.12y at 7%, 0,07euro/kWh 4.CBG for 0,73 euro Nm 3 MSPWSPSA Availability98%96%94% Methane slip0,5%1%3% General literature values from users and suppliers. No guarantee values

21 MSPWSPSA Investment ( upgrading) Investment (constr.) Investment (off gas) Total Investment Depreciation (12y) Interest (7%) /a Power (0,07 eur/kWh) /a Consumables (AC/MS) /a Maintenance /a Staff /a Methane loss (slip) /a Methane loss (availability) /a Total /a

22 Selectivity: How good is the separation Permeability: How fast is the separation CH4 Recovery: How much do you lose

23 DMT-HS Membranes 60


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