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FLACSApplication of FLACS in the Safety
Design of Petrochemical Plant
(Tang Ping)
(SINOPEC Engineerng Incorporaton, SEI)
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Brief introduction of SEI (SEI)
FLACS experience (FLACS)
Module: dispersion, explosion, fire, pool evaporation ()
Application in the design of onshore plants (FLACS)
Business ()
A top engineering incorporation in China ()
Business covers consulting, engineering, EPC, PMC and
licensing
and technical services for oil refining and petrochemical
projects,
coal to chemicals projects, natural gas storage and
liquefaction
projects and new energy projects (EPCPMC)
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1
2
Why do we choose FLACS?(FLACS)
How do we use FLACS?(FLACS)
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Content
LNG pool evaporation and
dispersion
LNG
Propylene jet fire
Case 1 Case 2 Case 3
Light hydrocarbon
leak and dispersion
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Case 1- LNG pool evaporation and dispersion
Natural gas liquefaction plant ()
Fuling, Chongqing ()
Deep hole besides the LNG tank (LNG
A 10,000m3 single containment tank ()
Released LNG falls into the hole and leads to explosion
(LNG)
Structural effect on underground corrosion cave ()
Building walls around the hole()
Proposed plan
()
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Case 1- LNG pool evaporation and dispersion
FLACS is used. (FLACS)
Catastrophic failure is assumed. ()
Wind blows towards the hole ()
Wind speed (): 2m/s
Pasquill stability: F
PHAST cannot help solve the problem (PHAST)
Single containment tank is used. ()
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10m5m
Cloud falls into the
hole ()Safe
Case 1- LNG pool evaporation and dispersion
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Final plan ():
Filling the hole ()
Eliminate the risk ()
10m high wall (10m):
A candidate plan ()
Construction difficulties ()
Simulation result was submitted to SINOPEC leaders
for decision. ()
Case 1- LNG pool evaporation and dispersion
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Case 2- Light hydrocarbon leak and dispersion
Polyethylene plant (): Explosive atmosphere classification for
electrical devices selection()
A degassing vessel handling light hydrocarbon is above the
extruder shop()
Leak of light hydrocarbon may enter the shop () Whether the
extruder should be explosion proof (
)
If yes, a difficult problem for extruder manufacturer ()
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Case 2- Light hydrocarbon leak and dispersion
PHAST cannot simulate (PHAST) blocking effect of the building
roof (
) zero wind speed problem ()FLACS was used (FLACS).
Zero wind speed () Vertical leak towards the roof (
)
Complex plant(). Spend much time building model(). DGN file
produced by PDS was imported (DGN)
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No explosion proof requirement for the extruder. ()
Flammable gas will not enter the building. ()
Case 2- Light hydrocarbon leak and dispersion
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Case 3- Propylene jet fire
Propylene releases from polypropyleneloop reactor ()
Jet fire()
Ignited by the self ignition of co-catalyst after the catalyst
contacts air()
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Case 3- Propylene jet fire
Jet fire for different reactor temperature and pressure ()
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Recommendation A
Defining a gas cloud of normal temperature and pressure in
Multiple or custom gas cloud (Multiple or custom gas cloud)
To define cloud not at normal temperature and Pressure ()
Integrate the setup file function into Multiple or custom gas
cloud(setup fileMultiple or custom gas cloud)
At present ()
Setup file
Recommendation()
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Recommendation B
Present database()
Petrochemical plant
()
Recommendation()
Hydrogen, methane, ethylene and other common gases,
limited ()
1,3-butadiene, ethylene oxide, benzene, xylene, methanol
(1,3-)
Adding more materials ()
