The invention relates to the technical field of CCUS, and discloses an offshore sandstone CCUS technology optimization method and
system and
computer equipment. The offshore sandstone CCUS technology optimization method comprises the steps that an offshore area with a sandstone layer is obtained, an offshore platform is established, and direct
air capture equipment is arranged on the offshore platform; a novel amine-containing absorbent is adopted to absorb
carbon dioxide in the air which is directly absorbed by the air capturing equipment; the absorption
tower adopts a
composite material and a
coating structure; fluid dynamics
simulation software is adopted to calculate air flow and liquid flow in the carbon capture process,
simulation data are analyzed, and fluid distribution in the
tower and the
tower body structure are optimized; conveying the extracted
carbon dioxide to a geologic structure under a
seabed of a storage place through a pipeline for sealing and storing; and evaluating the potential influence on the
marine ecosystem by adopting an ecological model and environment
simulation software, and generating an influence report. The
carbon dioxide capturing and storing efficiency and safety can be improved, and meanwhile the influence on the environment is minimized.