teamwork

Houston-based sustainability company partners with Toshiba on carbon capture projects

Lummus Technology and Toshiba Energy Systems and Solutions Corp. announced a collaboration agreement that will have both companies pursuing carbon capture projects. Photo courtesy of Toshiba

Two global companies have announced a collaborative effort toward pursuing carbon capture projects.

Toshiba’s subsidiary Toshiba Energy Systems will provide its advanced amine-based solvents, which are specifically tailored for post-combustion carbon capture, as well as its “system design guidelines” aimed for Toshiba’s solvents. Houston-based Lummus Technology will provide its post-combustion carbon capture technology.

Lummus’ access to Toshiba’s advanced amine-based post-combustion carbon capture solvents and technology will be vital for the project. Toshiba’s amine-based post-combustion carbon has been used in commercial and demonstration plants in Japan, and have allowed capturing of over 600 tons per day of CO2. With this access, Lummus can integrate its technology into project designs, and deliver “operational excellence and a competitive cost structure for customers,” according to the company.

Lummus can offer clients an OPEX-competitive solution by incorporating Toshiba’s advanced solvents that will be characterized by reduced amine emissions, lower specific energy consumption per ton of CO2 absorbed, and higher solvent stability against degradation.

“We are delighted to collaborate with Lummus to introduce our advanced amine-based solvent and CO2 capture solution to a broader audience,” Shinya Fujitsuka, senior vice president of Toshiba Energy Systems and Solutions Corp., says in a news release. “Addressing the urgent need for decarbonization is paramount, and I have every confidence that our partnership with Lummus will enable us to make meaningful contributions towards achieving this goal.”

Both companies have been active in these innovations for years. Lummus has been a leader in post-combustion carbon capture technology since the 1990s by using latest generation solvent technology that provides the full design involving an absorber and solvent regeneration systems, which can be applied to complex combustion flue gas streams. Since 2007, Toshiba has been considered an industry leader in post-combustion amine-based solvent CO2 capture technology.

“I am excited about our partnership with Toshiba, which expands Lummus’ range of low carbon solutions and aligns with our commitment to lowering emissions for the downstream energy industry,” Leon de Bruyn, president and CEO of Lummus Technology, says in the release. “Combining Lummus’ post-combustion carbon capture technology with Toshiba’s highly competitive solvents and technology gives our customers a strong option for CAPEX and OPEX solutions as they advance their carbon capture investments.”

Lummus has recently secured other partnerships with Dongyang Environment Group to roll out Lummus' advanced plastics recycling technology in Seosan, Chungcheongnam-do, South Korea, and will be operated by Dongyang Environment's subsidiary, Seohae Green Chemical. Lummus also paired with Citroniq Chemicals to build North American plants that produce green polypropylene.

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A View From HETI

Rice's Atin Pramanik and a team in Pulickel Ajayan's lab shared new findings that offer a sustainable alternative to lithium batteries by enhancing sodium and potassium ion storage. Photo by Jeff Fitlow/Courtesy Rice University

A new study by researchers from Rice University’s Department of Materials Science and NanoEngineering, Baylor University and the Indian Institute of Science Education and Research Thiruvananthapuram has introduced a solution that could help develop more affordable and sustainable sodium-ion batteries.

The findings were recently published in the journal Advanced Functional Materials.

The team worked with tiny cone- and disc-shaped carbon materials from oil and gas industry byproducts with a pure graphitic structure. The forms allow for more efficient energy storage with larger sodium and potassium ions, which is a challenge for anodes in battery research. Sodium and potassium are more widely available and cheaper than lithium.

“For years, we’ve known that sodium and potassium are attractive alternatives to lithium,” Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering at Rice, said in a news release. “But the challenge has always been finding carbon-based anode materials that can store these larger ions efficiently.”

Lithium-ion batteries traditionally rely on graphite as an anode material. However, traditional graphite structures cannot efficiently store sodium or potassium energy, since the atoms are too big and interactions become too complex to slide in and out of graphite’s layers. The cone and disc structures “offer curvature and spacing that welcome sodium and potassium ions without the need for chemical doping (the process of intentionally adding small amounts of specific atoms or molecules to change its properties) or other artificial modifications,” according to the study.

“This is one of the first clear demonstrations of sodium-ion intercalation in pure graphitic materials with such stability,” Atin Pramanik, first author of the study and a postdoctoral associate in Ajayan’s lab, said in the release. “It challenges the belief that pure graphite can’t work with sodium.”

In lab tests, the carbon cones and discs stored about 230 milliamp-hours of charge per gram (mAh/g) by using sodium ions. They still held 151 mAh/g even after 2,000 fast charging cycles. They also worked with potassium-ion batteries.

“We believe this discovery opens up a new design space for battery anodes,” Ajayan added in the release. “Instead of changing the chemistry, we’re changing the shape, and that’s proving to be just as interesting.”

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