Overcoming climate changeProduction

Fuel shift and cogeneration

The majority of the fuel we use at breweries is consumed in the boilers that generate steam. At all Kirin Brewery and Kirin Beverage plants, we have completed the shift to natural gas, which generates less GHG emissions than heavy oil.
We have achieved more efficient boiler operations through the installation of highly efficient small boilers in line with the fuel shift. We have introduced cogeneration systems to provide some of the plants’ heat and electricity.

  • Cogeneration

Refrigeration systems

At Kirin Brewery, we reduce energy consumption through improving the efficiency of refrigerating systems. We are introducing a cascade refrigeration system, which cools in phases, for processes that involve a considerable temperature difference, and we are also making operational improvements to refrigeration systems.

  • Figure: Improving the efficiency of refrigeration systems

Upgrades to high-pressure compressors for PET bottle molding

At the Kirin Beverage Shonan Plant, as part of our production processes, we mold PET bottles from a material called preform and fill them under aseptic conditions. In 2021, we switched our high-pressure compressors for PET bottle molding from V-type reciprocating compressors to inverter-controlled pneumatic machinery in the form of screw compressors and horizontally opposed reciprocating compressors, thereby reducing annual power usage by around 8%. This machinery can also recover and reuse waste heat from compressors.

  • Inverter-controlled pneumatic machinery

Introduction of high-efficiency boilers

Biokyowa, which produces amino acids in the United States, uses natural gas as a heat source during production. In order to reduce the use of natural gas, in 2020, we replaced all boilers with high-efficiency package boilers that control the number of operating units. This has made it possible to reduce annual natural gas consumption by approximately 8%.

  • High-efficiency package boilers, Plant staff involved in the boiler project

*The above information is reprinted from the Kirin Group Environmental Report 2022 and is current as of June 30, 2022.