公开(公告)号：US11674219B1

公开(公告)日：2023-06-13

申请号：US17913731

申请日：2021-03-19

Applicant: SAFRAN CERAMICS

Inventor： Jean-François Daniel René Potin ,  Arnaud Delehouze ,  Stéphane Roger André Goujard

IPC: C23C16/04 ,  C23C16/455 ,  C23C16/44 ,  B01D53/24 ,  C04B35/83 ,  C04B35/628 ,  F16D69/02 ,  C23C16/26

CPC classification number: C23C16/045 ,  B01D53/24 ,  C04B35/62873 ,  C04B35/62884 ,  C04B35/83 ,  C23C16/26 ,  C23C16/4412 ,  C23C16/45593 ,  F16D69/023 ,  C04B2235/422 ,  C04B2235/5248 ,  C04B2235/5252 ,  C04B2235/614 ,  F16D2200/0052 ,  F16D2200/0065

Abstract: A method for densifying one or more porous substrates with pyrolytic carbon by chemical vapour infiltration, includes admitting, at the inlet of the densification furnace, a reactive gaseous phase including at least one pyrolytic carbon precursor; reacting at least a fraction of the reactive gaseous phase with the porous substrate or substrates; extracting, at the outlet of the densification furnace, gaseous effluents originating from the reactive gaseous phase; reintroducing, with the reactive gaseous phase admitted at the inlet of the densification furnace, at least a fraction of the gaseous effluents extracted at the outlet of the furnace, wherein the fraction of the gaseous effluents introduced with the reactive gaseous phase includes at least one polyaromatic hydrocarbon compound.

公开(公告)号：US11753594B2

公开(公告)日：2023-09-12

申请号：US17642547

申请日：2020-09-25

Applicant: SAFRAN CERAMICS

Inventor： Jean-François Daniel René Potin ,  Arnaud Delehouze ,  Stéphane Roger André Goujard

IPC: C10G21/06 ,  C10G21/14 ,  C10G29/20 ,  C10G31/06

CPC classification number: C10G31/06 ,  C10G29/205 ,  C10G2300/1062 ,  C10G2300/201

Abstract: A method for treating an aromatic mineral oil or a mixture of aromatic mineral oil and naphthenic mineral oil, the oil or the mixture of oils being loaded with polycyclic aromatic hydrocarbons, the method including a—optional removal of polycyclic aromatic hydrocarbon s having a molecular weight greater than or equal to 200 from the aromatic mineral oil or the mixture of aromatic mineral oil and naphthenic mineral oil loaded with polycyclic aromatic hydrocarbons; b—extraction, at a pressure lower than atmospheric pressure, of polycyclic aromatic hydrocarbons having a molecular weight lower than 200 solubilised in the oil or the mixture of oils obtained in step (a); and c—recovery of the oil or the mixture of oils depleted in polycyclic aromatic hydrocarbons.

公开(公告)号：US11827517B2

公开(公告)日：2023-11-28

申请号：US18006700

申请日：2021-07-20

Applicant: SAFRAN CERAMICS

Inventor： Jean-François Daniel René Potin ,  Laurent Maisse

IPC: C04B35/83 ,  C01B32/05 ,  C04B35/622

CPC classification number: C01B32/05 ,  C04B35/62204 ,  C04B35/83 ,  C04B2235/614

Abstract: A method for recycling a carbonaceous by-product obtained during the manufacture of a part made of carbon/carbon composite material including pyrolysis of the carbonaceous by-product so as to obtain a carbonaceous residue; forming a gas phase comprising a hydrocarbon from the carbonaceous residue; separating the hydrocarbon from the remainder of the gas phase; introducing the hydrocarbon separated in this way into a reaction chamber, and forming pyrolytic carbon in the reaction chamber from the hydrocarbon introduced by infiltration or chemical vapor deposition.