biomethane liquefaction plants : technologies to overcome · pdf file2 biomethane liquefaction...

B. Brèthes, D. Blanchard – Cryostar SAS

Biomethane liquefaction plants :

Technologies to overcome challenging business cases

2

Biomethane liquefaction plants : Technologies to overcome challenging business cases

COMPANY PRESENTATION

2006. Cryostar becomes a member of The Linde Group via theacquisition of BOC by Linde

2007. Delivery of the first onboard BOG reliquefaction unit onLNG ship, with a total of 18 delivered units up to now.

1966. Cryostar opens in Basel (Switzerland)and expands in Hésingue (France) 6 yearslater.

1974. Start of the turbine and compressorproduct lines.

1978. Cryostar becomes a member of TheBritish Oxygen Company (The BOC Group)

3

Family StarLNG™

Product StarLiteLNG™ StarLNG™

ScopeEP for liquefiers

from 20 to ~100 tpdEP(C) for plantsabove 100 tpd

Refrigerant N2 MR or N2

Supplier CRYOSTAR LINDE


4

How to make small-scale liquefiers competitive?

Use a straightforward process: single-stage N2.

Standardize the product portfolio with 4liquefiers from 20 tpd to 100 tpd +.

Manufacture and service critical componentsin-house.

Cooperate with expert partners for EPCcontracts (gas purification, construction…).


5

Liquefier including main equipment and control systems

Interconnecting pipes

Truck loading and fueling stations

Partnerships with engineering companies for full EPC offers

StarLiteLNG™ liquefaction systems – Typical scope of supply


6

Typical block diagram (for landfill gas)


7

The biogas purified in the pre-treatment unit shall meet, as a minimum, the following gas quality:

CO2 content < 50 ppmvH2O content < 0.1 ppmvH2S = < 4 ppmHg < 10 ng per Nm3

The pre-treatment unit removes all components which may cause freezing or material damage innitrogen/gas aluminium heat exchangers.

Typical technologies :Absorption systems (amine, water) for CO2 and H2S removalAdsorption systems for CO2, H2S, Hg, N2 and H2O removalMembrane systems for CO2, O2, H2O and H2S removal

Purification and polishing


8

StarLiteLNG™ liquefaction systems – Process diagram for the XS model


450-K-330N2 compressor stage 3

R40

450-K-130 N2 compressor stage 1

R20

450-E-010CCHTX

R10

450-T-090N2 expander

R80

R120

400-E-020Natural gas condenser

R94

G10

L20

TO LNG STORAGE

Natural gas from treatment

N2 compander

450-K-230N2 compressor stage 2

R60

R70

450-AC-340Aftercooler stage 3

R50

450-AC-140Intercooler stage 1

R30

450-AC-240Intercooler stage 2

MM

400-E-010Natural gas desuperheater

R110

G20

L10

960-VES-030N2 inventory drum

Nitrogen make up

450-M-600Motor for N2 compander

R131R133

R91

450-TV-021CCHTX by-pass valve

450-PV-130ALP inventory control valve

450-PV-130BHP inventory control valve

450-FV-010BN2 expander by-pass valve

R93

R100

450PIC130

RSP

400-PV-010Product valve

450-FV-010AN2 expander

nozzles

400TT

030

R92

R132R134

450PT

130

9

StarLiteLNG™ liquefaction systems – Typical layout for the XS model


Compander skid

N2/N2 skid

N2/biomethane skid

10

LIQUEFIERPRODUCT

TYPICAL CAPACITY

XS 28 TPD

S 50 TPD

M 88 TPD

L 125 TPD

StarLiteLNG™ liquefaction systems – Product portfolio

Power consumption (compander motor):

0.7 to 1.1 kWh/kg


11

Information needed to design your StarLiteLNG™ liquefaction system

(Bio)gas flow to select the right liquefier size.

(Bio)gas composition to size the gas treatment package and select the right technologies.

Ambiant temperatures for the design of air-coolers.

Storage pressure (depending on product distribution chain and tanks design).

Final application to assess the need for subcooling in storage tanks.

Liquid composition requirement or methane number (depending on final use).

Country of installation and specific local regulations.


12

StarLiteLNG™ - N2 single-stage cycle

Simple operation – Operators without experience as gas liquefaction plant operators High level of automation possible. A single turbomachine in the refrigeration loop. Easy capacity adjustment.

Flexible operation – Gas-gas closed loop Process robustness with regard to feed gas composition variations. Stable operation from 30 to 100% design capacity. Fast restart after shut down.

N2 refrigerant advantages Easy-to-source refrigerant. Improved safety with non-toxic and non-flammable refrigerant.

A good choice for biogas liquefaction plants


13

Low capital cost A suitable portfolio of standard products instead of fully customized plants. Skid-mounted modules to minimize on-site construction costs.

Reliable and efficient equipment Turbomachine designed, assembled and tested in house. Aluminium plate fin heat exchangers from the Group. All core equipment from proven suppliers.


StarLiteLNG™ - N2 single-stage cycleA good choice for biogas liquefaction plants

14

Thank youfor your

attentionFor further information:

David BlanchardClean Energy Business Unit

Tel: +33 (0)[email protected]

www.cryostar.com

Expert in advanced technologies for Industrial Gas, Clean Energy, LNG and Hydrocarbon applications


biomethane liquefaction plants : technologies to overcome · pdf file2 biomethane liquefaction...

Documents