Protecting the Environment
We promote a broad range of initiatives to combat climate change with the aim of helping mitigate global warming, the central theme of our environmental protection efforts. Of particular note, we are taking steps to reduce energy consumed per unit of production at gas production facilities, promoting energy-saving measures at various sites and striving to increase the efficiency of transport by tanker truck. We also promote the development of products that reduce our impact on the environment and propose solutions and contribute to global environmental conservation.
Environmental Impact of Oxygen, Nitrogen and Argon Production
The production of the Taiyo Nippon Sanso Group’s core air separated gases (oxygen, nitrogen and argon) requires a considerable amount of electric power. CO2 emissions attributable to the use of electric power used for this purpose account for approximately 98% of total Group CO2 emissions.
Air separation units produce oxygen, nitrogen and argon simultaneously by separating atmospheric air into its constituent gases. Air is first compressed, a process that is highly energy-intensive and thus uses a significant amount of electric power. Compressed air is cooled almost to the point where the gases liquefy, after which it is ready for the distillation column, where it is separated into its gas and liquid components using a thermal distillation process. Nitrogen, which has a low boiling point, concentrates in the gas and is withdrawn from the top of the column, while oxygen, which has a higher boiling point, concentrates in the liquid and is withdrawn from the bottom of the column. Argon, which has an intermediate boiling point, is withdrawn from the middle of the column.
Air Separation Unit: Simplified Process Flow
Preventing Global Warming
Our efforts to contribute to the prevention of global warming center on reducing energy consumption at gas production facilities. We have established an Energy Saving Working Group as a subsection of our Environmental Management Committee to guide these efforts. In fiscal year 2019, consumption of energy per unit of production by such facilities was up 0.2% from fiscal year 2006, the base year used for this measurement, reflecting changes in the consumption of gases supplied by pipeline by major users.
Moreover, these facilities’ consumption of electric power per unit of production was down 27.2% from fiscal year 1991. Efforts by gas production facilities to reduce energy consumption included developing and installing energy-efficient air separation units, replacing air separation unit components with new high-efficiency versions and optimizing facility operations to better reflect demand. These facilities also promote initiatives in line with the Commitment to a Low-Carbon Society plan formulated by the Keidanren (Japan Business Federation) and the Japan Chemical Industry Association (JCIA)’s action plan for realizing a low-carbon society.
Consumption of Electricity by Gas Production Facilities in Japan
Reporting boundary: Gas production facilities belonging to and gas production companies managed by Taiyo Nippon Sanso.
1. For information on relevant companies/departments/sites, see Environmental Data.
2. Increases in fiscal years 2018 and 2019 reflect a change in the reporting boundary to include JFE Sanso Center Co., Ltd.’s Kurashiki Plant.
|Challenges and targets||Principal initiatives||Progress as of fiscal year 2019||Relevant companies/ departments/sites*1|
|1. Promote energy-saving measures at various sites to reduce electric power consumption
(Target: Average annual reduction of 1.0% over the medium to long term)
(from fiscal year 2018)
|All Taiyo Nippon Sanso sites (excluding gas production facilities)|
|2. Increase the efficiency of transport by tanker truck to reduce fuel used in the transport of products||
(from fiscal year 1991)
|Group and subcontracted logistics companies*1|
|3. Contribute to environmental protection through our products by increasing sales of environment-friendly products||Take steps to bolster sales of hydrogen refueling stations, SCOPE-Jet®, MG Shield®, SF6 Recovery Service, Thermos products, nitrogen supply systems for laser processing and combustion-type gas abatement systems||Contribution to overall reduction: 1,779,000 tonnes of CO2*2||Taiyo Nippon Sanso and directly owned consolidated subsidiaries in Japan|
*1 For information on relevant companies/departments/sites, see Environmental Data.
*2 Contributions to the reduction of greenhouse gas emissions were calculated in accordance with the Japanese Ministry of Economy, Trade and Industry’s Guideline for Quantifying GHG Emission Reduction Contribution (formulated in March 2018).