##
There’re 4 Liquefaction Process Technologies for LNG Production:-
#02.
Cascade (ConocoPhillips) Process:
*
1- The raw gas is first treated to remove (CO2), (H2S) and other sulfur
compounds, (H2O), organometallic mercury compounds, particulates, and other
contaminates before it is routed to the liquefaction section of the plant.
*2-
The treated gas is then chilled and condensed to approximately -162°C in
successively colder heat exchanges, using pure propane (or propylene),
ethylene, and methane as refrigerants.
*3-
The refrigerant circuits are designed with 2 drivers/compressors for each
refrigerant which provides a wide range of turn down capacity and a high degree
of availability. For the propane cycle core-in-kettle type exchanges are used.
Brazed aluminium plate-fin exchanges (cold boxes) are applied mainly in the
ethylene and methane cycles. All the cooling, with exception of the propane chilling,
takes place in the 2 cold boxes.
*4-
The LNG product is then pumped into storage tanks where it remains until
shipment. Boil-off gas and ship return vapors are captured and recycled through
the Optimized Cascade process for efficient re‑liquefaction.
#03.
Shell DMR Process.
#04.
Linde Process.
Comments
Post a Comment