Environmental Technologies Development


“Serving Society with Technology” is the philosophy of Chiyoda’s foundation. Bearing this in mind, we have undertaken research and development, demonstration projects and commercialization of energy and advanced environment-related technologies.
Making the most of our strengths as an engineering firm, we are able to take such a comprehensive approach to research and development as it is integrated with process development, design and system analysis. With this approach, we have carried out technology development both on our own and in cooperation with our clients and technology owners, aiming for commercialization and problem-solving based on society's ever-changing demands. We will continue our efforts to contribute to solving new issues including materializing a low-carbon and carbon-free society.

Examples for Technology Development

We are actively undertaking various technology developments that are selected through the evaluation by our Technical Strategy Committee. The following are typical technology development cases that are being conducted in collaboration with the public research institutions:

1. Energy Saving
Based on high performance catalysts and membranes, we aim to develop new processes to enhance energy efficiency dramatically in comparison to conventional processes.
 ・Development for production process of valuable olefins with zeolite catalyst from light naphtha. (NEDO*1)
 ・Development of CO2 separation process with zeolite membrane from highly sour natural gas. (JOGMEC*2)

2. Energy Storage
For the effective utilization of renewable energies, the issues of regionally uneven distribution and time variation should be addressed, and we have developed the energy storage and transportation technology to clear them.
 ・Development of hydrogen transportation and storage system with organic chemical hydride. (NEDO)

3. CO2 Storage and Utilization
We are developing technologies to store CO2 into the deep see floor and convert CO2 to valuable chemicals.
 ・Demonstration test of eco-friendly carbon capture and storage. (Ministry of Environment)
 ・Development of technology and system for production of C2 chemicals from CO2 with electrolytic synthesis. (NEDO)

*1:New Energy and Industrial Technology Development Organization
*2:Japan Oil, Gas and Metals National Corporation

Environmental Initiatives to Protect Air Pollution in India

Sustainable Cities and Communities Climate Action

Sustainable Cities and Communities Climate Action

In India, coal accounts for 54.6% of the installed power capacity of 356GW (as of March 2019). With its robust and rapid economic growth, air pollution has been seriously increased, and removal of SO2 emitted from coal-fired plant has become an important social issue.
In 2030, domestic share of coal-fi red plant will be still around 40 % as the demand for coal is firmly rooted in its low and stable price.
In November 2016, Chiyoda concluded a technology license agreement with India’s major heavy industry manufacturer Larsen & Toubro (L&T) to provide its proprietary “Chiyoda Thoroughbred 121 (the CT-121)” flue gas desulfurization process (FGD) technology for promotion in the Indian market.
Currently, CT-121 technology is applied in the 8 FGD retrofit projects allocated in the attached map, and going to contribute for the protection of air-pollution in India.

Artwork of the completed CT-121

Map of CT-121 licensing projects underway in India

Environmental technology proposal

Chiyoda's energy and environmental technology that creates the future.
Chiyoda's Change to Contribute to the Realization of a Prosperous Society.


Envuromental Technorogy

CO2 Reforming Process (CT-CO2ARTM Process) 

CT-CO2ARTM (Chiyoda CO2 Reforming Technology) is a unique and advanced technology utilizing CO2 as reforming agent to efficiently produce synthesis gases of varying H2/CO ratios. Synthesis gases are the feeds for producing various chemicals and liquid fuels (GTL-fuels etc.). This technology enables monetization of low-calorie, CO2-containing natural gas fields and can also be applied to efficiently reuse CO2 emitted from various industrial processes. CT-CO2ARTM can also reduce CO2 emissions, capital investment and operating costs significantly. For example, producing syngas with an H2/CO ratio of 1.0 (suitable for oxo-synthesis, etc), CO2 emission, capital costs, natural gas consumption can be reduced 37%, 20% and 12%, respectively, as compared to conventional technologies. CT-CO2ARTM is thus, an environment-friendly technology.

CCS System

Participating in METI (Ministry of Economy, Trade and Industry) led consortium,
which is conducting an experimental demonstration project in Tomakomai, Hokkaido Island.
EPC for post combustion CO2 capture experiment project for a Coal-fired Power Plant in Fukuoka, Kyushu Island.

CT-121 Technorogy

The Chiyoda Thoroughbred 121TM (CT-121) Flue Gas Desulfurization (FGD) process is a unique technology developed by Chiyoda which is highly efficient, enabling the low-cost removal of flue gas sulfur dioxide (SO2) and dust.
There are 83 CT-121 units worldwide, and where environmental regulations are stringent, the CT-121 process has more than 20 % share in Japan and the US.
India, with its robust and rapid economic growth, is in need of power plants to sustain their development under newly adopted strict emission gas standard for coal-fired power plants and the demand for FGD plants is increasing significantly.

SPERA Hydrogen Chiyoda's Hydrogen Supply Business

Chiyoda Corporation has been proposed the global hydrogen supply chain concept by liquid organic hydrogen carrier (LOHC) with Toluene/Methylcyclohexane system. In this method, hydrogen is fixed to toluene (C7H8) with the hydrogenation reaction and converted into methylcyclohaxane (MCH: C7H14) that is able to be transported with a chemical tanker as same as toluene. In the demand site, hydrogen is generated from MCH by dehydrogenation reaction, and toluene is recovered for the recycle use. LOHC is suitable for large-scale storage and long distance transportation due to the ambient condition with the low potential risk.

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.