JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

The students will be able to:

• Gain basic knowledge of LNG and its prospective.
• Learn different liquefaction technologies of LNG.
• Have knowledge on different functional units on receiving terminals
• Analyze transportation of LNG and regasification.
• Understand HSE of LNG industry.

Course Outcomes

Upon successful completion of this course, the student will be able to:

• Have good knowledge on LNG process.
• Classify different liquefaction techniques.
• Understand different units in LNG processing and transportation.
• Have knowledge associated with safety aspects of LNG.

UNIT - I

Introduction: Overview of LNG industry: History of LNG industry – Base load LNG – Developing an LNG Project – World and Indian Scenario – Properties of LNG.

UNIT - II

Liquefaction Technologies: Propane precooled mixed refrigerant process – Description of Air products C3MR LNG process – Liquefaction – LNG flash and storage. Cascade process: Description of ConocoPhillips optimized cascade (copoc) process – Liquefaction – LNG flash and storage. Other Liquefaction Processes: Description of Linde MFC LNG process- Precooling and Liquefied Petroleum Gas (LPG) recovery – Liquefaction and subcooling- Trends in LNG train capacity – strategy for grassroots plant- offshore LNG production.

UNIT - III

Supporting Functional Units in LNG Plants: Gas pretreatment: Slug catcher – NGL stabilization column – Acid gas removal unit – Molecular sieve dehydrating unit – Mercury and sulphur removal unit – NGL recovery – Nitrogen rejection – Helium recovery.

UNIT - IV

Receiving Terminals: Receiving terminals in India – Main components and description of marine facilities – storage capacity – Process descriptions. Integration with adjacent facilities – Gas inter changeability – Nitrogen injection – Extraction of C2+ components.

R16 B.TECH AERONAUTICAL ENGG.

LNG Shipping Industry & Major Equipment in LNG Industry: LNG Shipping Industry: LNG fleet – Types of LNG ships – Moss – Membrane – prismatic; Cargo measurement and calculations

UNIT - V

Major equipment in LNG industry: Cryogenic heat exchangers: Spiral – Wound heat exchangers – Plate-fin heat exchangers – Cold boxes; Centrifugal compressors – Axial compressors – Reciprocating compressors. LNG pumps and liquid expanders – Loading Arms and gas turbines. Vaporizers: Submerged combustion vaporizers- Open rack vaporizers – Shell and tube vaporizers: direct heating with seawater, and indirect heating with seawater. Ambient air vaporizers: Direct heating with ambient air – Indirect heating with ambient air.; LNG tanks. Safety, Security and Environmental Issues: Safety design of LNG facilities – Security issues for the LNG industry – Environmental issues – Risk based analysis of an LNG plant.

TEXT BOOK:

• 1. LNG: Basics of Liquefied Natural Gas, I st Edition, Stanley Huang, Hwa Chiu and Doug Elliot, PETEX, 2007. (https://ceonline.austin.utexas.edu/petexonline/file.php/1/ebook_demos/lng/HTML/index.htm l.)

REFERENCE BOOKS:

• 1. Marine Transportation of LNG (Liquefied) and related products, Richard G. Wooler, Gornell Marine Press, 1975.
• 2. Marine Transportation of Liquefied Natural Gas, Robert P Curt, Timothy D. Delaney, National Maritime Research Centre, 1973.
• 3. Natural Gas: Production, Processing and Transport, Alexandre Rojey, Editions OPHRYS, 1997. R16 B.TECH AERONAUTICAL ENGG. B.TECH. PETROLEUM ENGINEERING