3 replies to this topic

[chem101]

Hi:
We have 3.0 MMSCFD natural gas. My Manager wants me to liquefy this gas using J-T plant.
Can we use 900 psia pressure in J-T plant to liquefy this gas. The inlet gas Temperature is 100 F at 60 psia. Is there anyone who can help me to design this plant. Personally I think the 900 psia is too low. Main Gas is Methane
thanx allot in advance

[NGL Licensor]

Hi:
We have 3.0 MMSCFD natural gas. My Manager wants me to liquefy this gas using J-T plant.
Can we use 900 psia pressure in J-T plant to liquefy this gas. The inlet gas Temperature is 100 F at 60 psia. Is there anyone who can help me to design this plant. Personally I think the 900 psia is too low. Main Gas is Methane
thanx allot in advance

JT plant alone may partially do the job

Please send the complete composition

AF.King

[chem101]

compostions are
methane 92.12%
N2 1.82%
ethane 2.26%
propane 0.61%
i-butane .44%
co2 2.75%

[NGL Licensor]

compostions are
methane 92.12%
N2 1.82%
ethane 2.26%
propane 0.61%
i-butane .44%
co2 2.75%

Some other info:

- What is the source of this low pressure lean feed gas? is it from an up-stream NGL cryogenic plant (feed heavy up-to IC4 alone)

Is the feed gas saturated with water at 100 F and 60 psia?

-Any data about mercury content

- The feed gas shows some NGL. DO you want to recover first this NGL

- If you want to liquify the whole stream then do you want it at atmpshric pressure (at about -166 deg. C)

- Also there is apperciable amount of CO2. If you want to liquify the whole feed then:

- Inlet compression
- Up-stream conditioning (Hg and CO2 removal and Bone dry Mole sieve)
- C3 plus removal
- MCR or cascade refrig to liquify the C2 minus gas