Abstract: A refrigerant composition includes about 90-92 wt % difluoromethane and about 8-10 wt % pentafluoroethane. The refrigerant composition is formed from all recycled materials, and the refrigerant composition is a zeotrope. A method of preparing the refrigerant composition includes injecting a mixture of recovered refrigerants into the center of a distillation column, the mixture of injected refrigerants being difluoromethane, pentafluoroethane and chlorodifluoromethane, removing from the top of the distillation column a refrigerant composition of about 90-92 wt % difluoromethane and about 8-10 wt % pentafluoroethane, and removing chlorodifluoromethane from a bottom of the distillation column.
Type:
Application
Filed:
August 7, 2023
Publication date:
April 11, 2024
Applicant:
The Coulan Company, L.L.C.
Inventors:
David L. Couchot, Abiral Mainali, Raymond E. Maloney, Harold B. Kivlan, IV
Abstract: A refrigerant composition includes about 90-92 wt % difluoromethane and about 8-10 wt % pentafluoroethane. The refrigerant composition is formed from all recycled materials, and the refrigerant composition has a net global warming potential of about 0. A method of preparing the refrigerant composition includes injecting a mixture of recovered refrigerants into the center of a distillation column, the mixture of injected refrigerants being difluoromethane, pentafluoroethane and chlorodifluoromethane, removing from the top of the distillation column a refrigerant composition of about 90-92 wt % difluoromethane and about 8-10 wt % pentafluoroethane, and removing chlorodifluoromethane from a bottom of the distillation column.
Type:
Grant
Filed:
October 11, 2022
Date of Patent:
September 5, 2023
Assignee:
The Coulan Company L.L.C.
Inventors:
David L. Couchot, Abiral Mainali, Raymond E. Maloney, Harold B. Kivlan, IV
Abstract: A refrigerant composition includes about 63-66 wt % difluoromethane and about 33-36 wt % pentafluoroethane. The refrigerant composition is formed from all recycled materials, and the refrigerant composition has a net global warming potential of about 0. A method of preparing the refrigerant composition includes injecting a mixture of recovered refrigerants into the center of a distillation column, the mixture of injected refrigerants being difluoromethane, pentafluoroethane and chlorodifluoromethane, removing from the top of the distillation column a refrigerant composition of about 63-66 wt % difluoromethane and about 33-36 wt % pentafluoroethane, and removing chlorodifluoromethane from the bottom of the distillation column.
Type:
Grant
Filed:
December 27, 2022
Date of Patent:
May 23, 2023
Assignee:
The Coulan Company, L.L.C.
Inventors:
David L. Couchot, Abiral Mainali, Raymond E. Maloney, Harold B. Kivlan, IV