Process Flow Diagram Lng Plant

Lng process and technology. The natural gas liquefaction plant step two in the process chain is cleaning the natural gas at the liquefaction plant. A simplified schematic of the lng process is shown in figure 6 4.

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A typical lng import terminal process flow diagram is shown in figure 5.

Process flow diagram lng plant. The major equipment components of an lng import. Hammerfest lng plant block flow diagram slug catcher inlet facilities metering co2 removal de hydration mercury removal natural gas liquefaction lpg storage condensate storage meg. Cascade process for natural gas liquefaction methane ethylene propane ng 32 12 c 1 4 bar 7 bar 96 c 1 4 bar 19 bar lng 155 1 4 bar 45 bar. Figures 6 5 and 6 6 show simplified process flow diagrams for the plant for the mechanical drive and electrical power options.

Lng j t expander bypass valve lng lng flash tank lng lng lng liqueﬁed methane gas to sub cooler j t expander bypass valve compressor anti surge valve main cryogenic heat exchanger on site ccgt power plant provides electric power for compressor drives and steam for heating processes lng liquefaction process flow diagram. Lng plant overview seminar with supplier association murmanshelf murmansk 15 may 2012 jostein pettersen. Table of content. Not all lng plants are created equal.

Block diagram of lng plant main process stages liquefaction process technologies examples from hammerfest lng plant examples from other lng plants. Origin of natural gas natural gas exists in nature under pressure in rock reservoirs in the earth s crust either in conjunction with and dissolved in heavier hydrocarbons and water or by itself it is produced from the reservoir similarly to or in conjunction with crude oil natural gas has been formed by the degradation of organic matter accumulated in the past millions of. Liquefied natural gas lng is natural gas that has been cooled to 260 f 162 c changing it from a gas into a liquid that is 1 600th of its original vo. Liquefied natural gas lng for the 2014 spe roughneck camp chris caswell director lng and flng.

2 lng process chain the lng process chain. Liquefaction technologies are classified on the bases of refrigeration cycles i e open cycle processes and closed cycle processes as shown in fig. In an open cycle process the refrigerant may be part of the natural gas feed. A simplified lng schematic including process units and utilities is shown in fig.

Although similar the liquefaction process varies depending on the powering option adopted for the lng plant all mechanical drive or all electrical power. Process flow diagram q high temperature ambient q low temperature sub ambient condenser suction drum. Flow diagram for a typical lng plant.