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HomeCVMR NewsNew technique successfully converts power plant CO2 to graphite

New technique successfully converts power plant CO2 to graphite

Author: CVMR®
Date of publication: 14.02.2019
Reading time: 9 min.
724

New technique successfully converts power plant CO2 to graphite


Posted on January 31, 2019 by James Ockenden in Technology, Carbon & climate

A Canadian project has successfully captured power plant flue gas CO2 and converted it into value-added products including graphite and graphene. The project, run by CVMR and EnerCarbon and partially funded by the”Solutions 2030 Challenge” program of the Ontario Centers of Excellence (OCE), involves capturing CO2 emissions from industrial operations of various scales through a novel modular technology, replacing conventional absorption towers and scrubbers.

The goal is to capture CO2 from industrial plants such as utility plants, oil sands producers, chemical manufacturers as well as those that have much smaller operations. The captured CO2 is then converted into stable and value-added carbon byproducts, such as graphite and graphene. CVMR and EnerCarbon have established the concept for the economic capture of CO2 at various scales of emission. They have successfully bench-tested the production of graphite and graphene from the captured CO2 at their own joint facilities located in Toronto, Ontario.

Existing technology offers poor payback

The existing technologies for post-combustion application rely mostly on absorption towers that suffer from complicated operational problems such as large footprint, inflexibility for treating diverse flue gas streams and toxic chemical carryover, all of which are impediments to small and medium size companies. In addition, it is challenging to convince the producers to integrate currently available CO2 capture technologies into their plants due to the high costs and the potential for interruption in their production flow. Another major challenge is the disposal of captured CO2 or its conversion into stable products that are simple to transport and do not require elaborate infrastructures.

Most of the approaches for valorising CO2 are either energy-intensive or suffer from low payback rates, neither of which is financially attractive for the private sector. The rationale behind the development of the new technologies by CVMR and EnerCarbon are:

  • unavailability of a modular, retrofittable CO2 capture unit in the market that would be cost-effective for small- to medium-size companies;
  • inability of the available technologies to convert captured CO2 into physically stable and useful forms of carbon; and,
  • the investors’ uncertainty about returns on such investments.

Going industrial

In May 2018, CVMR was awarded a substantial grant provided by the Government of Ontario, through OCE, under a three-phase competition over three years, called Ontario’s Solutions 2030 Challenge. Since May 2018, when the grant was awarded, a joint team of engineers and researchers at CVMR and EnerCarbon have successfully designed, built and commissioned their proprietary bench-scale prototype for capturing CO2 and converting it into graphite.

Their CO2 capture unit offers a modular technology and easily scalable membrane scrubber units that enable efficient CO2 capture at a reduced capital cost and reduced footprint (up to 50%) as compared with conventional absorption towers. CVMR and EnerCarbon have successfully advanced this phase, explored availability of diverse membrane materials among various manufacturers, worldwide, and have built different membranes and tested them at simulated conditions of flue gas from power plants using commonly available basic chemical absorption liquids. They have explored the optimum operational conditions of the system through numerous trials and have achieved CO2 capture results of over 97%.

The task ahead, the company says, is to prove the efficiency of the modular units under diverse conditions and applications with significant variations in process parameters such as inlet gas flow rate, gas composition, temperature, and pressure. The company’s engineers and research scientists have collected a wide range of operational data, including screening of absorbent chemicals for efficient CO2 loading, required membrane surface area, operating pressure and temperature and effective release of CO2 from these chemicals, in order to enable CVMR to scale up the operating units.

Low energy solution

The CO2 regeneration of conventional absorption systems is always a challenge and requires a large thermal input and, therefore, it imposes a large energy penalty to the process. To address this issue CVMR and EnerCarbon have developed a novel concept, as part of their ongoing phases of the OCE supported project resulting in the release of CO2 at lower energies as compared with the conventional thermal regeneration operations. This system reduces the energy consumption significantly and minimises the operational cost.

To valorise the captured CO2, CVMR and EnerCarbon are developing an approach that relies on CVMR’s proprietary chemical vapour deposition technology for oxidation (exothermic), reduction (endothermic) reactions of CO2 with catalytic mineral materials. This is achieved through a controlled gas-solid reaction. The process is energy-efficient and can increase the revenue from the sale of the valuable CO2-sourced byproducts such as graphite and graphene. Since their OCE project started, the team of researchers at CVMR have designed and commissioned a bench-scale catalytic carbon production unit from CO2 gas that has successfully produced graphite products at preliminary testing conditions.

The process targets a wide range of small to large-scale industrial CO2 emitters. Kamran Khozan, Chairman of CVMR and EnerCarbon stated that “Upon completion of our partially funded project by OCE, it is expected that we will have collected enough information for the design and construction of our pilot unit bringing the system closer to commercial readiness.”

The production of graphene and graphite from captured CO2 is in line with CVMR’s creed of environmental protection and development of technologies that help reduce environmental pollution. For the past 30 years, CVMR has been engaged in mining and metal refining of some 36 metals, using its proprietary vapour metallurgy processes and technologies and its own mineral resources. The processes it uses are completely neutral to the environment. They produce no air, water or soil pollution. CVMR continues to produce high value metal powders, nano-powders, sub-nano-powders, net shapes and super alloys, using CVMR’s proprietary processes. The metal powders provide the feed materials for 2D and 3D Printing (Additive Manufacturing) and Metal Injection Moulding (MIM).

The pure graphite and graphene produced by CVMR through the new system will be used in nano-flowcell vanadium batteries and batteries based on various combinations of lithium, manganese oxide (LMO); lithium, manganese, nickel oxide (LMNO); lithium, nickel, cobalt, aluminium oxide (LNCA). According to the Chinese National Bureau of Statistics, the market projection for Vanadium Redox Flow Battery demand in the top 10 industrialised countries is growing at a compound annual growth rate of 80% from 2013 to 2020, ultimately culminating in more than 7,000MW of vanadium-flow capacity needed by 2020.

Read more from original source: https://blueskieschina.com/2019/01/31/new-technique-successfully-converts-power-plant-co2-to-graphite/

Answers to your questions

  • What does CVMR do?

    CVMR refines metals using vapor metallurgy and produces high-purity powders and components for various industries.

  • What metals does CVMR work with?

    CVMR works with over 30 metals, including nickel, cobalt, lithium, rare earth elements, gold, silver, and copper.

  • Who uses CVMR’s products?

    CVMR’s products are used in aerospace, automotive, electronics, medical devices, energy storage, and defense.

  • What is vapor metallurgy?

    It’s a process where metals are vaporized and purified to produce ultra-pure materials with precise control.

  • Is CVMR eco-friendly?

    Yes, CVMR uses sustainable methods like recycling metals, reducing CO₂, and turning methane into graphene.

  • Where is CVMR located?

    CVMR is based in Toronto, Canada, and operates in over 20 countries globally.

  • Who are CVMR’s clients?

    Clients include Pratt & Whitney, U.S. Mint, Virgin Galactic, Barrick Gold, and the U.S. Department of Energy.

  • Does CVMR make battery materials?

    Yes, CVMR supplies lithium, nickel, cobalt, manganese, and vanadium for electric vehicle and storage batteries.

  • What is CVMR’s role in graphene?

    CVMR converts CO₂ and methane into high-quality graphene for electronics, energy, and advanced material use.

  • How do I contact CVMR?

    Visit https://cvmr.ca or email [email protected] for business inquiries and more information.

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