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Commitment to CSR

Commitment to CSR

Commitment to CSR

Commitment to CSR

Low Carbon Society

The Chiyoda Group conducts its business with a corporate philosophy centered on “Energy and Environment in Harmony.” Chiyoda has been fulfilling this philosophy since the 1970s by using technology development and engineering for both stable energy supply and environmental protection.
The environmental technologies we have developed include flue gas desulfurization,
wastewater treatment and heavy oil cracking. Recently, in response to public demand, we have been steadily expanding our activities in the area of new energy. These include solar photovoltaic, solar thermal,geothermal, biomass and other types of renewable energy, a hydrogen supply chain with our own technology for storage and transport of large quantities of hydrogen, and Gas to Liquids (GTL)-related technology*.

*:Technology for producing liquid fuel from natural gas

Overview of Chiyoda’s Environmental Technologies

Creating the Future with Chiyoda's Energy and Environmental Technologies:
Chiyoda's Transitions in Contributing to a Prosperous Society

Creating the Future with Chiyoda's Energy and Environmental Technologies


Examples of environmental technologies we are currently promoting.

Contributing to stable energy supply and greenhouse gas reduction:
Gas to Liquids(GTL) technology using CO2 as a raw material

The JAPAN-GTL Process*1 was developed by Japan Oil, Gas and Metals National Corporation ("JOGMEC"), working in conjunction with INPEX CORPORATION, JX Nippon Oil & Energy Corporation, Japan Petroleum Exploration Co., Ltd, COSMO OIL CO., LTD, NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD, and CHIYODA CORPORATION (JAPAN-GTL CONSORTIUM).
Fuels produced by GTL technology are expected to be clean and environmentally friendly because of their absence of sulfur and aromatic compounds. In the conventional GTL technologies, the raw material natural gas must be treated so as to remove the containing CO2. However, Japan-GTL technology features Chiyoda’s unique CO2 reforming catalyst (CT-CO2ARTM catalyst) that allows natural gas containing significant amounts of CO2 to be fed as its raw material. This breakthrough technology opens a new path to clean fuels from natural gas, which is found widely throughout the world.
  In connection with the development of the JAPAN-GTL Process, JOGMEC and the Nippon GTL Technology Research Association*2, an entity established by the Project Companies, has spent approximately 6 years (from October 2006 to August 2012) conducting the JAPAN-GTL Demonstration Test Project*3. For the purpose of the JAPAN-GTL Demonstration Test Project, JOGMEC and Nippon GTL Technology Research Association constructed the JAPAN-GTL Demonstration Plant in Niigata, Japan, which has the capacity to produce 500 barrels (80 kilo-liters) of oil per day. Further, in parallel with the JAPAN-GTL Demonstration Test Project, JOGMEC and Nippon GTL Technology Research Association have conducted supplementary research and development, and studies relating to the commercialization of the JAPAN-GTL Process. In addition, CT-CO2ARTM catalyst has been provided to an existing synthesis gas plant and has been operating stably since 2014. Based on these experiences, as a member of JAPAN-GTL CONSORTIUM, Chiyoda is actively engaged in the unique GTL technology to secure a stable energy supply while contributing to the global environment.

*1:JAPAN-GTL Process is a groundbreaking technology that would for the first time ever,
   allow natural gas containing carbon dioxide to be used directly. The process converts
   potential resources spread in the world (natural gas, shale gas…etc.) into sulfur and 
   aroma free petroleum products, such as clean naphtha, kerosene and diesel.

*2:The Nippon GTL Technology Research Association is a technology research association
   established by the Project Companies on October 25th, 2006, in connection with the GTL
     Demonstration Test Project. The Nippon GTL Technology Research Association was liquidated
     on August 31st, 2012, upon the completion of the GTL Demonstration Test Project.

*3:The JAPAN-GTL Demonstration Test Project is JOGMEC’s joint-research program in connection
     with the "GTL Demonstration Test Project for liquid fuel".

CT-CO2ARTM catalyst:

Development of a carbon capture and storage system as a mitigation measure against global warming

Carbon capture and storage (CCS) system

Carbon capture and storage (CCS) is a technology to separate/recover CO2 (carbon dioxide) from flue gas exiting thermal power stations, etc., transport it to storage sites and store it underground as an effective means of mitigating global warming.
Chiyoda Corporation, anticipating the trend toward global warming mitigation measures, is striving to commercialize a complete carbon capture and storage system, from the point of separation/recovery to the point of transportation and injection of the CO2.

CO2 separation/recovery system
Using environmental technologies cultivated when constructing thermal power stations and liquefying/loading technologies developed when constructing LNG plants, we provide a system to separate off and recover CO2, which forms part of the process from environmental measures for treating flue gas to liquefying and loading of CO2 gas.

CO2 transportation/injection system
The methods used to transport the CO2 from the emission source (source) to the storage site (sink) can be roughly classified into pipeline and ship. Chiyoda Corporation, receiving engineering guidance from Professor Masahiko Ozaki of the University of Tokyo, aligns the characteristics of both approaches and is striving to develop an optimum CO2 transportation/injection system, compatible with source and sink.

CCS System:

SPERA Hydrogen

A Renewable energy utilization is dispensable for sustainable growth of the world. Hydrogen produced from a renewable energy is expected to play a key role in the low-carbon society of the future, hydrogen produced from the renewable energy is used for “storage” and “transportation” of the renewable energy as a fuel for a power generation etc. It is necessary a technology for the storage and transportation of hydrogen in large-scale for the spread of hydrogen energy, however such technology has not been established.
Chiyoda has developed the world’s first technology that enables the storage and transportation of large quantities of hydrogen. It is named “SPERA Hydrogen” system. “SPERA” means “hope” in the Latin language, so “SPERA Hydrogen” is “Hydrogen of Hope”.
In this technology, hydrogen and toluene are reacted to methylcyclohexane (MCH) in which hydrogen is stored in its molecule. Hydrogen is able to be stored and transported in a large-scale as MCH in the liquid state under the ambient temperature and pressure. Toluene and MCH are both of components of gasoline or diesel oil, the system has a merit of decreasing a risk for the storage and transportation of hydrogen in a large-scale to the risk of conventional storage and transportation of gasoline or diesel oil. At a hydrogen utilization place, hydrogen is generated from MCH and toluene is reproduced. Toluene is transport to hydrogen producing place and converted to MCH again. Toluene is used repeatedly as a hydrogen carrier.
Through a success of a long term operation with a pilot plant located in Chiyoda’s Koyasu Office & Research Park in Yokohama in 2014. The established technology is highly regarded from advisory committee of experts.  Chiyoda is now working to create a large-scale hydrogen storage and transportation system to supply large amounts of hydrogen energy to users around the world under the name “SPERA Hydrogen” (the “Hydrogen of Hope”). 

SPERA Hydrogen


(a) Reaction section


(b) Tank yard

Fig. demonstration plant

Strengthening presence in concentrating solar power business

 Demonstration plant in Italy

Chiyoda is also focusing on business in the field of concentrated solar power (CSP). Chiyoda have been developing next-generation CSP technology – Molten Salt Parabolic Trough (MSPT-CSP). Parabolic trough technology with synthetic oil as heat transfer fluid (HTF) is most broadly applied in commercial CSP plant. Synthetic oil is organic(benzene) based and as such cannot reach temperature above 400℃ with accept performance, due to its degradation at high temperature. For MSPT-CSP technology, molten salt is utilized as HTF. Molten salt can be used up to 550℃(150℃ higher than Synthetic Oil) and it leads a lot of advantages like higher steam cycle efficiency/ smaller storage system/etc…
In June 2011, Chiyoda signed a cooperation agreement with Italian Company - Archimede Solar Energy(ASE) to develop technology including demonstration plant construction and business for MSPT-CSP. ASE is the world’s only manufacturer of the receiver tubes that are a core technology of MSPT-CSP. Demonstration plant was completed in July 2013 and inauguration party was held with 500 participants including government officials of Italy and Japan. Then demo plant operation was continued and finished in August 2015 after successful data acquisition. Based on demonstration plant experience, Chiyoda will continue to seek opportunity of CSP project mainly in South Africa/Middle East/North Africa and contribute even more to the supply of clean energy.

Solar Power Business:

On going development of flue as processing technology
(CT-121 flue gas desulfurization process)

Coal-fired thermal power nationwide
on the 1000MW-scale

Our company has been paving the way as the sole engineering specialist proactively developing in-house technologies such as air-pollution control and water purification technologies, etc. since as early as the 1970s, when the pollution problem came to the fore and has since offered pollution control-related facilities to various clients. These ongoing efforts have also extended to developing new technology and improving existing technology. CT-121, our own unique flue gas desulfurization process, is an environmentally responsive technology to eliminate sulfur oxide (SOx) present in the flue gas of fossil fuels and applicable for use in tail gas treatment facilities for medium-/small- and large-scale thermal power stations. This equipment is utilized for the domestic and overseas power industry and has claimed a high market share. To date, including overseas, we have achieved a delivery record of 83 units and the technology has been utilized for flue gas treatment on a total power generation scale encompassing 38,600MW.


Commercialization of Chiyoda Hybrid Titania (CT-HBT) catalyst for the hydrodesulfurization (HDS) of diesel oil

Removal of sulfur from gasoline or diesel oil leads to the discharge restraint of the air pollution material and plays a big role for reduction of the environmental load.
Chiyoda has successfully developed and commercialized the novel Chiyoda Hybrid Titania (CT-HBT) catalyst for catalytic hydrodesulfurization of distillate (kerosene, diesel oil). CT-HBT catalyst has both the superior reactivity of the titania catalyst and superior material properties of the alumina catalyst.
CT-HBT catalyst has been installed into the hydrodesulfurization unit for kerosene / diesel oil at Yamaguchi refinery of Seibu Oil Co., Ltd. as the commercial first unit.
This unit has shown satisfying performance through block operation between  LCO (Light Cycle Oil*) mixture diesel oil and kerosene since a startup in January, 2014.
CT-HBT catalyst which has high desulfurization activity is able to convert LCO of difficulty desulfurization characteristics to a value-added expensive diesel oil product .
For example, LCO obtained as by-product from FCC (fluid catalytic cracking) unit have been able to be slightly mixed with GO(Gas Oil) fraction because of it’s difficulty in desulfurization and most of them have been used as the diluent of the heavy oil until now, but CT-HBT catalyst make it possible to mix the comparative amount of LCO and turn it into a value-added high diesel oil product.
Chiyoda continue development of CT-HBT catalyst aggressively based on these results and contribute to the reduction of the environmental load.

*:Catalytic cracked gas oil obtained from FCC unit with feed of VGO (Vacuum gas oil) or residual oil.

CT-HBT catalyst:

Topics of the FY2015

Launching the first project to produce and supply renewable jet and diesel fuels in Japan


Schematic view after completion
(It may be different from the real plant because of planning stage)

Recently in Japan, there have been several developments leading to the realization and expansion of the use of biofuels such as renewable jet fuel as we move toward 2020. The establishment of the “Committee for the Study of a Process Leading to Introduction of Renewable Jet Fuel for the 2020 Summer Olympic Games and Paralympic Games in Tokyo”, by the Ministry of Economy, Trade and Industry and Ministry of Land, Infrastructure, Transport and Tourism was an important step.

Chiyoda is cooperating with euglena Co., Ltd. (Euglena) as an EPC (Engineering, Procurement and Construction) contractor for Japan’s first demonstration plant to produce and supply renewable jet and diesel fuels as a part of euglena’s plan toward 2020.
In this project, Euglena signed a Technology License Agreement with Chevron Lummus Global for the use of their Biofuels ISOCONVERSION Process. Chiyoda will localize it to meet the Japanese standards and perform EPC of the demonstration plant. The features of this technology are as follows: the conducting of hydrothermal treatment before hydrogenation, the ability to produce not only bio-jet fuel but also bio-diesel fuel and bio-naphtha fuel, and the wide variety of raw materials, where the raw material need not to be Euglena oil, but also various fats, oils and free fatty acids.

Based on our longtime experiences with petroleum refining plants, we are confident to contribute to the reduction of CO2 emission though this pioneering project.

“SPERA Hydrogen®” system for large-scale H2 storage and transportation technology

The Japanese government has been promoting a “hydrogen society,” and Fuel Cell Vehicles (FCVs), hydrogen refueling stations and residential fuel cells (ENE-FARM®) have all been commercialized. A safe technology for the large-scale storage and transportation of hydrogen is required to increase the utilization of hydrogen energy.
Chiyoda completed a technical establishment of the “SPERA Hydrogen®” System through a demonstration operation with a pilot plant in 2013, the first in the world.
Chiyoda received the “Jules Verne Award” from the International Association of Hydrogen Energy in 2014, the first Japanese business in the Award’s history. In 2015, Chiyoda also received the “JIE Award” from the Japan.
Institute of Energy, and the “Noguchi Memorial Award” from the Japan Petroleum Institute.
Chiyoda plans to play a role in resolving the issue of global warming through building a “hydrogen society” with the “SPERA Hydrogen®” System Technology.