Enabling Technology Project

E11 Development of Highly Efficient Carbon-Circulation Chemical System

Outline of the area

Takashi Tatsumi President, National Institute of Technology and Evaluation
Takashi Tatsumi
National Institute of Technology and Evaluation

The carbon cycle consists of biogeochemical exchanges among the biosphere, geosphere, hydrosphere, and atmosphere of the Earth. Many projects that aim to decrease the amount of carbon dioxide in the atmosphere by using plants to fix carbon are underway. Compared to the atmospheric carbon dioxide, however, human-emitted carbon dioxide is usually localized and concentrated. This situation can be utilized for constructing a carbon cycle subsystem that is more efficient than physical or plant-dependent carbon cycles. ALCA has been developing the technology to efficiently separate and recover relatively high concentrations of carbon dioxide emitted from power plants or ironworks, the catalysts for the low-energy conversion of the carbon dioxide to methanol, the reaction systems therefor, etc. This project aims to construct a highly efficient chemical system for a carbon cycle based on technologies of this kind. Our specific goal is the development of practical applications that construct modular plants for converting carbon dioxide emitted from existing thermal power plants to useful chemicals. To use carbon dioxide as resources, technology for the mass-production of hydrogen, a reducing agent, without emitting carbon dioxide must be developed. However, because the development of such technology is a long-term subject, this project can be combined with existing technologies for hydrogen production, enabling an early development of the important elemental technologies for the efficient and large-scale conversion of carbon dioxide to raw materials. Furthermore, highly efficient processing technologies to recover carbon species from various sources and fix them in the form of raw materials for chemicals are to be developed to contribute to the realization of a low carbon society.


Development of Low Cost and Energy Efficient CO2 Separation Materials and Processes using Amine-Gels Technologies

Yu Hoshino
Associate Professor, Kyushu University

This project aims at development of the CO2 separation membranes which transports CO2 under low pressure, and highly efficient CO2 separation process using the membranes. General procedures to design highly efficient CO2 separation membrane will be developed by taking advantage of the pKa shift of the amines introduced in the stimuli-responsive nanogel particle.


Energy-Saving CO2 Capture Process with Phase Separation Solvent

Hiroshi Machida
Assistant professor, Nagoya University

Carbon dioxide capture and storage is regarded as a promissing technology for the global worming problem. We propose a novel CO2 absorption solvent that separates into two liquid phases after CO2 absorption. It enables us to reduce the CO2 separation energy by sending olny the CO2 rich phase to desorption column.