CO₂ Emissions

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This index shows the quantity of CO₂ emitted per ton of feedstock crushed or processed. It is measured in kilograms of CO₂ per metric ton of feedstock (kg CO₂/MT).

Building on the reductions achieved in 2020, we continued to introduce process improvements and efficiency savings at our sites around the world in 2021. A key focus of our efforts was the reduction of steam usage, which helps target two of our environmental metrics, energy consumption and greenhouse gas (GHG) emissions.

Year-on-year change

Down

1.2%

Case Studies

Claypool, Indiana, US

One of our largest steam consumers in our production processes in Claypool is the DT (desolventizer toaster) unit, in which steam was traditionally added in several areas, resulting in a delayed response and subsequent temperature swings.

A new technology adopted in 2021 uses predictive controls to better manage the unit’s temperature, which reduces steam usage and, in turn, gas consumption and associated greenhouse gas emissions.

Zhangjiagang, China

In 2021, this facility reduced steam consumption by 8% year on year through a combination of CAPEX projects and initiatives to optimize production processes, saving emissions through steam, water or heat reductions:

Installation of a stripper pre-condenser to recover heat by preheat hexane, saving steam
Sending mineral oil stripper gases to the stripper condenser, working under high vacuum, saving steam
Replacement of ten small cooling towers with two large cooling towers, saving water and steam
Introduction of an expander cooler fresh air/vent air heat exchanger, saving steam
Optimizing production parameters to reduce temperatures across multiple systems, saving steam

Year-on-year reduction in CO₂ emissions: 2,247.73 tons

Tianjin, China

Adding a heat exchanger between the deodorizing oil and bleaching oil sections reduced the temperature required to maintain the system, which significantly reduced natural gas consumption for the high-pressure boiler.

Year on year reduction in CO₂ emissions: 373.22 tons

In parallel, a new 400m² plate heat exchanger was added to the first layer of the crushing plant’s two conditioning towers, which allowed heat from both the steam condensate and from circulating water in the heat recovery system to be used to warm the soybeans. Hot water after heat exchange is then used to heat the conditioning tower air heaters and the de-hulling system air heaters, further reducing steam usage.

Year on year reduction in CO₂ emissions: 2,641.77 tons

Lampung, Indonesia

In the biodiesel plant, the steam trap was relocated from the tank farm area near the heat exchanger, which reduced steam consumption and extended the steam trap’s lifespan.

Year on year reduction in CO₂ emissions: 4,857.24 tons

In the tank farm refinery plant, replacing the aging steam trap line and refinery coil optimized steam consumption.

Year on year reduction in CO₂ emissions: 12,143.09 tons

CO2 Emissions

This index shows the quantity of CO2 emitted per ton of feedstock crushed or processed. It is measured in kilograms of CO2 per metric ton of feedstock (kg CO2/MT).

CO₂ Emissions

This index shows the quantity of CO₂ emitted per ton of feedstock crushed or processed. It is measured in kilograms of CO₂ per metric ton of feedstock (kg CO₂/MT).