Small-Scale LNG plants

Building upon SIAD Group’s extensive experience and capabilities in gas treatment and cryogenic liquefaction, SIAD has developed a line of small-scale SMART LNG plants to produce Liquefied Natural Gas (LNG). The plants are safe, efficient, reliable and easy to operate. SIAD offers three different technologies to provide the process refrigeration for liquefaction of LNG depending on flow rate and other customer requirements. These include:

• Direct heat exchange with a an externally supplied stream of liquid nitrogen
• Direct compression – expansion – liquefaction of the natural gas stream
• Direct heat exchange with an internally generated liquid nitrogen stream produced by a closed loop ADD nitrogen expansion process for refrigeration

RANGE OF “SMART LNG” PLANT	LNG PRODUCTION
	Imperial Units			Metric Units
	scfh	sTDP	lb/h	Nm3/h	TDP	kg/h
SMART LIN-LNG Plant involving the use of liquid nitrogen(LIN) as the cooling factor	1,865.0 - 10,450.0	1.1 - 5.5	30.0 - 150.0	50.0 - 280.0	1.0 - 5.0	40.0 - 208.0
SMART DCE-LNG Technology of direct compression, cooling, expansion and liquefaction of the methane	10,450.0 - 20,890.0	5.5 - 11.0	150.0 - 300.0	280.0 - 560.0	5.0 - 10.0	208.0 - 415.0
SMART TB-LNG Nitrogen recycling plant with expansion turbine and booster	20,890.0 - 1,253,300.0	11.0 - 660.0	300.0 - 17,940.0	560.0 - 33,600.0	10.0 - 600.0	415.0 - 25,000.0

scfh = @ 60°F and 14.696 psi(a) / sTPD = Short Tons Per Day
Nm³/h = @ 0°C and 1.013 bar(a) / TPD = Tons Per Day

Where are SIAD’s Smart LNG plants deployed?

• Stranded gas assets – monetize valuable assets
• Flare gas – monetize waste product while minimizing methane emissions
• Boil off gas from storage at export terminals – capture and reliquefy a valuable product
• Peak shaving and backup

Advantages of SIAD Smart LNG technology

• Absence of traditional materials as refrigerants
• Use of electric drive compressors and turbines
• Designed for safe operations
• High level of operational safety with simplified processes
• Fully modularized for easy and quick installation for lower total CAPEX and faster on-stream time
• Designed for optimal energy consumption, minimal maintenance and lowest cost of operation
• Option to add SIADMI4U for remote monitoring and diagnostics

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The experience of the SIAD Macchine Impianti engineers, at the service of our customers, has created a certified standard which is adaptable to the various requirements of small, medium and large-sized industries.

Pressure Vessels and Piping AD 2000 ASME B31.3 ASME VIII-1 BS 5500 CE Machinery Directive CE PED CSA EN 13445/13458 EN 13445/13458 EN13480 GB/T20801 GB150/151 ISPESL (Italy) TEMA   Electrical CE ATEX Directive CE EMC Directive CE LV Directive CSA DIN EN IEC NFPA 70 (NEC)

Structural (wind, earthquake) ASCE 7 EN1991/1998   Technical Standards AISC ANSI API ASTM AWS BS CEI DIN EN ISA ISO NACE NEMA UNI (Italy)

The most important features of Smart LNG involve four key aspects of SIAD’s engineering skills: namely, robust and consolidated cryogenic technology, a flexible liquefaction process, operational safety and maximum environmental sustainability.

We offer the following engineering services:

• Feasibility studies.
• Commissioning supervision.
• Erection, start up and performance testing.
• Remote control.
• Software for process simulation

 

The application of the LNG produced is envisaged for vehicle fueling stations, micro distribution networks (for heating or industrial combustion) and for energy storage.

 

• Cold gases transport & storage
• Monitize assets e.g. Stranded gas and flare gas
• Reliquefaction of boil-off gas at export terminals
• Peak shaving and back-up for natural gas pipelines