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LPG storage Tank for storing Carbon Dioxide

LPG storage Tank for storing Carbon Dioxide

LPG storage Tank for storing Carbon Dioxide

(OP)
We are setting up a plant where CO2 will be used in gaseous form at pressure of 6kg/cm2 and temperature 25-35 deg Celsius.  We will use approximately 10MT to 15MT of CO2/month initially. We already have 3 LPG storage tanks of 30MT,& 2 nos. 20MT. I wish to know if we can use these tanks to store CO2 with modifications (insulations)? The design pressure of these tanks is 14.76 kg/cm2 and what I got to know from various sources, LCO2 is generally stored in vessels having pressure range of 22 kg/cm2 to 28 kg/cm2. To use the CO2 in gaseous form, what kind of machinery do we need, if we purchase liquid  CO2? Please help.  

RE: LPG storage Tank for storing Carbon Dioxide

Do not cross post

RE: LPG storage Tank for storing Carbon Dioxide

CO2 liquid is stored at 300 psi at 0 deg. F
Usually LP tanks cannot hold that pressure at that temp. The tank would have to be heavily insulated to minimize the refrigeration necessary. Internal modification would have to be inserted for the refrigeration coils and that may be prohibitive cost wise. BUT you may be able to store gas CO2 up to the nominal operating pressure of the LP tank. Possibly re-size the relief valves, etc.

RE: LPG storage Tank for storing Carbon Dioxide

(OP)
Thanks Purgit!! We are now planning to setup CO2 storage tanks only...

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