Small and mid-scale liquefaction plants for Natural Gas and Bio Gas

03/1

4 EN

Liq

uefa

ctio

n_3

Small Natural Gas liquefaction plants have attracted a lot of attention as a means of monetizing stranded unconventional Natural Gas reserves. Other poten-tially valuable sources of gas such as anaerobic digestion or land-fill gas have also contributed to the interest in liquefaction. These two areas give rise to a range of liquefaction plants of capacities from 1 – 20 tphr (8,640 – 172,800 tpa). These schemes are particularly attractive where there is no pipeline infrastructure and there is a desire to utilize “green fuel”.

To address this market, TGE delivers a one-stop-shop approach for the provision of the whole chain for monetizing stranded unconventional gas or gas from waste. This chain extends from the gas reception, pre-treatment, liquefaction, storage, loading, transportation and provision of satellite stations at the user end of the “gas-to-market” chain. TGE is a leading contractor in the field of LNG handling import and export terminals providing a turnkey solution for the complete chain.

TGE covers a wide range of design concepts, engineering performance, procurement, construction, commissioning and after sales service for Liquefied Natural Gas (LNG), or Liquefied Bio Gas (LBG) Plants

Small and mid-scale Natural Gas liquefaction plants

FlueGas

Hot Oil

Dry NGNG LNG LNGLNG

LNG

LNG

Hot

Oil

Hot

Oil

Hot

Oil

Hot

Oil

Flue

Gas

Reg

en. G

as

Vap.

Ref

r.

Liqu

. Ref

r.

NaturalGas

WasteWater

SourGas

ExhaustGas

Hot OilSystem

SolventRegeneration

NGPurification

CO2 Removal

Fire Fighting

Feed GasCompression

MRC Make upUnit

Waste HeatRecovery

NGPurification

Drier

Utilities

Gas Turbine

RegasificationSystem

NGLiquefaction

Flare

Boil Off Gas(Fuel Gas)

Compression

LNGStorage

LNGLoading Station

Special Container

LNGLoading Station

Container

LNGLoading Station

Truck

LNGMeters

LNGMeters

Typical Liquefaction Processes Process descriptionAll units are designed in a modular arrangement installed on preassemble skids which are pre-insulated, piped up, with control systems tested ready for easy installation on site. A typical liquefaction process consists of the following steps

1. Pre-Treatment includingn Filtering & compressionn Purification & CO2 removal n Removal of trace impurities, e.g. mercuryn Gas drying

2. Liquefaction of the GasTwo possible liquefaction processes are offered by TGE. The choice depends on plant capacity and raw gas conditions.

Mixed Refrigerant Cyclen Single multi-component major characteristics used

comprising typically nitrogen, methane, ethane, butane and pentane

n High efficiencyn Sensitive to feed gas changesn Complex operationn Moderate turndown capability

Pure Refrigerant expander Cycle n Range of Application: 1 – 15 t/hr LNGn A pure refrigerant ( typically nitrogen ) is pre-cooled,

expanded in a turbine, producing a cold to produce LNG based on the Reverse Brayton Cycle

n Lower efficiencyn Less sensitive to feed gas changesn Can handle wide turndown ratiosn Easy to operaten Single machine concept combining cycle com-

pressor and expander

Wash Column

Pure Refrigerant Cycle

Mixed Refrigerant Cycle

3. Storage, Loading and send-outWide range of storage facilities depending on the special needs of the client, mostly pressurized storage for small plant applications. Sourcing of road and rail cars through parent company subsidiaries.

a member of the group

Benefitsn One-stop-shopn Tailor-made and modular designn Includes proprietary equipment n Solid engineering experience

03/1

4 EN

Liq

uefa

ctio

n_3

China‘s 1st Mid-Scale Liquefaction Plant in Shan Shan

Germany

TGE Gas Engineering GmbH Mildred-Scheel-Str. 1 53175 Bonn

T +49 (0) 228 60448 0 F +49 (0) 228 60448 810

info @ tge-gas.com

Belgium

TGE Gas Engineering GmbH Woluwedal 28 1932 Zaventem (St.-Stevens-Woluwe)

info @ tge-gas.com

Taiwan

TGE Gas Engineering GmbH 6th Floor, No. 198 Dun Hua South Road Section 2 Taipei 106

T +886 (0) 2 2377 7277 F +886 (0) 2 2377 7207

tgetaiwan @ tgetaiwan.com.tw

China

TGE Gas Engineering GmbH New Shanghai International Tower Unit A, 30th Floor - 360 Pu Dong Nan Road 200120 Shanghai

T +86 (0) 21 6418 3069 F +86 (0) 21 6418 3071

tso @ tgeshanghai.com

India

TGE Gas Engineering Private Ltd. German Centre for Industry & Trade Office No. 22, 12th Floor, Building No. 9 Tower B DLF Cyber City, Phase III, Gurgaon – 122002 India

T +91 124 424 9080 F +91 124 424 9084

United Kingdom

TGE Gas Engineering GmbH Suite 2 a, Manchester International Office Styal Road, Manchester, M22 5WB

T +44 (0) 161 2040 000 F +44 (0) 161 2040 470

info @ tge-gas.com

Technodyne International Limited Floor 4, Black Horse House Leigh Road, Eastleigh Hampshire, SO 50 9 FH

T +44 (0) 2380 629929 F +44 (0) 2380 613113

info @ tge-gas.com