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Emission

  • Eco-friendly Solution
  • Emission
  • OCCS

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Onboard Carbon
Capture System (OCCS)

Product Overview

The Pan-OCCS™ (Onboard Carbon Capture System) is
designed to capture and prevent carbon dioxide
emissions from ships from being released into the atmosphere

A wide range of international efforts are underway to reduce greenhouse
gas emissions, and in the shipping industry as well, there is a growing need
for technologies that can reduce carbon dioxide emitted from ships.

Schematic Diagram of Carbon Capture Process

  • ① Pre-treatment of flue gas

    Flue gas is cooled in the quenching tower. When the particles and sulfur oxide are removed, the gas is pressurized by the intake fan and transferred to the absorber tower.

  • ② CO₂ Absorption

    Once cooled, the gas comes into contact with the chemical solvent in the absorber, and CO₂ is selectively absorbed. To ensure efficient delivery of the substance and keep the tower size to a minimum, high-performance packing and an appropriate layout of the internal components are required.

  • ③ Regeneration

    A solvent that has absorbed CO₂ is transferred to the stripper tower. The high-temperature vapor in the reboiler causes CO₂ to be removed from the solvent. In the cooling tower, it breaks down into water and CO₂. Then, the water is recovered and sent to the stripper while CO₂ is transferred to the liquefaction process.

  • ④ Liquefaction & Storage

    Adding pressure and cooling for liquefaction purposes to meet the needs of storage containers and buyers.

- Consortium for Onboard Carbon Capture System

Teaming up to reduce the GHG in short term

  • Classification

  • Equipment Maker

  • Ship Owner

  • Ship Builder

Flow Diagram
OCCS Specification
Items Value
Feed Flue gas Volume 14,000Nm³/hh
Capture level 90%
Feed Flue gas Volume 14,000Nm³/h
Captured CO₂ 1,039kg/h
Product LCO₂ 1,018kg.LCO₂/h
Purity of product LCO₂ 99.9%
Solvent flowrate 11.3ton/h
Additional fuel for OCCS 123kg/h
Waste heat usage 15% of heat energy
Captured CO₂ 6,596ton/year

LCO₂ Offloading, Green Methanol Production

According to the sampling report, the CO₂ purity reached 99.9%, and this was utilized for green methanol production after transportation.
This not only proves that the system operates effectively under real marine conditions, but also demonstrates that the captured CO₂
can play a significant role across the broader energy transition.

Application Dry ice Agriculture Underground Storage CO₂ welding E-methanol Beverage
CO₂ Purity (mol-%) 99.50% 99.50% 99.81% 99.90% 99.90% 99.95%
Application CO₂ Purity (mol-%)
Dry ice 99.50%
Agriculture 99.50%
Underground Storage 99.81%
CO₂ welding 99.90%
E-methanol 99.90%
Beverage 99.95%
PROPERTY METHOD RESULT UNITS MIN MIX
Carbon Dioxide GB/T 1886.228-2016 >99.9% (V/V) - -
Water by Dew Point GB/7 5832.2-2016 2.14ppm (v/v) - -

CO₂ Liquefaction System

By efficiently liquefying the CO₂ captured by the Onboard Carbon Capture System (OCCS) and safely storing it in ISO tanks or Type-C tanks,
the system enables its utilization across a wide range of applications.

  • ① Compressor

    - Gaseous CO₂ is compressed to high pressure to create conditions suitable for liquefaction.

    - During the compression process, both the pressure and temperature of the CO₂ increase, so it is integrated with downstream equipment such as coolers and condensers to promote efficient liquefaction.

  • ② Dryer

    - It removes moisture and impurities contained in the CO₂ gas.

    - Since moisture can cause freezing or corrosion inside piping, valves, and heat exchangers, the dryer is used as an essential pre-treatment unit.

  • ③ Condenser

    - It cools the compressed CO₂ and condenses it from the gaseous state to the liquid state

    - By creating high-pressure, low-temperature conditions, it enhances liquefaction efficiency and makes storage and transfer of liquid CO₂ easier.

  • ④ Refrigerant System

    - It removes the heat generated during the compression and condensation processes to keep the CO₂ temperature stable.

    - By operating in conjunction with the condenser, it improves liquefaction efficiency and ensures overall system stability.