Method and apparatus for sequestering carbon dioxide in the deep

Details Method and apparatus for sequestering carbon dioxide in the deep Method and apparatus for sequestering carbon dioxide in the deep

1992-10-05

1995-03-14

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

48190, B01D 700

Patent

active

053975537

ABSTRACT:
Disclosed is a system for sequestering carbon dioxide by combining sub-cooled carbon dioxide gas phase and liquid water (fresh or salt) in a reactor to form carbon dioxide clathrates in a continuous process at pressures from 3 to 20 atmospheres. The seawater feed for the clathrate reactor is pumped to the surface from a depth of approximately 1000 meters. A slip stream of the reactor feed water is used to pre-cool the carbon dioxide gases. The pre-cooled gaseous, or liquid carbon dioxide and the reactor surfaces are then sub-cooled by refrigeration to temperatures of -40.degree. C. to 0.degree. C., which is typically only 5.degree. to 45.degree. C. below ambient sea water temperatures at depths of 1000 meters. Forming clathrates in this manner is considerably less energy-intensive than CO.sub.2 compression and liquefaction at high pressures.

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