Process for the deposition of pyrolytic carbon material having a d / g ratio below 0.9

A process for depositing pyrolytic carbon with a low D/G ratio on a graphitic substrate addresses the quality decline of needle coke by producing carbon suitable for steel and battery applications, improving performance through controlled pyrolysis and hydrogen dilution.

WO2026027667A1PCT designated stage Publication Date: 2026-02-05BASF SE
View PDF 10 Cites 0 Cited by

Patent Information

Application Number
PCT/EP2025/072049
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-02
Filing Date
2025-07-31
Publication Date
2026-02-05

AI Technical Summary

Technical Problem

The decline in the quality of needle coke due to depletion of high-quality petroleum feedstock and environmental regulations has led to challenges in maintaining the desired performance for applications like steel production and lithium-ion batteries, necessitating the development of alternative carbonaceous materials with a high degree of graphitization.

Method used

A process for depositing pyrolytic carbon material with a D/G ratio below 0.9 on a graphitic carbonaceous substrate using a fixed, fluidized, or moving bed, pyrolyzing hydrocarbons at specific temperatures and pressures, and adjusting the carbon deposition rate by diluting the hydrocarbon feed with hydrogen.

Benefits of technology

This process produces pyrolytic carbon with a low D/G ratio, suitable for graphitization, enhancing its performance in steel and lithium-ion batteries, as well as other applications requiring graphitic carbon.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure IMGF000003_0001
    Figure IMGF000003_0001
  • Figure IMGF000008_0001
    Figure IMGF000008_0001
  • Figure IMGF000008_0002
    Figure IMGF000008_0002
Patent Text Reader

Abstract

The present invention comprises a process for the deposition of pyrolytic carbon material having a D / G ratio below 0.9 onto a substrate, wherein a graphitic carbonaceous material having a median pore diameter of 0.005 pm to (1) µm, an original D / G ratio of 0.1 to 0.9 and a Lc value of the crystallite sizes of 5 to 100 nm, is used as said substrate and is fed into a reactor chamber and used as bed material in the form of a fixed, fluidized or moving bed having a particle size of 0.1 mm to 10 mm, wherein hydrocarbon are also fed into said reaction chamber and pyrolyzed at a pressure of 1 to 30 bar and a temperature of 800 to 1500°C to give a hydrogen-containing product stream and solid pyrolytic carbon depositing on the bed material and wherein the carbon deposition rate of the pyrolytic carbon is kept in a range of 0.1 to 15 wt.-% by diluting the hydrocarbon feed with hydrogen to a volume ratio of H2 / C1 + of 0.5 to 25, wherein 01 + stands for all hydrocarbons having one or more C-atoms in the molecule.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Methane pyrolysis using stacked fluidized beds

    US20210331918A1

  • Reactor for endothermic high-temperature reactions

    US20220152568A1

  • Hydrocarbon conversion process

    US2982622A

  • Method for the parallel production of hydrogen and carbon-containing products

    WO2013004398A2

  • Device packed with solid material for performing endothermic reactions with direct electrical heating

    WO2019145279A1