Abstract 1. IN A PROCESS FOR THE PURIFICATION OF A CHLORINATED HYDROCARBON CONTAINING 2 TO 10 CARBON ATOMS WHEREIN THE CRUDE CHLORINATED HYDROCARBON IS PASSED TO A LIGHT-ENDS FRACTIONAL DISTILLATION ZONE TO FRACTIONALLY DISTILL THE CRUDE CHLORINATED HYDROCARBON AND SEPARATE AN OVERHEAD FRACTION CONTAINING LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES AND WATER, AND A BOTTOMS FRACTION CONTAINING THE CHLORINATED HYDROCARBON AND A SMALL AMOUNT OF HIGH BOILING IMPURITIES, THE OVERHEAD FRACTION IS PASSED TO A LIGHTENDS RECOVERY ZONE COMPRISING A CONDENSATION ZONE AND A LIGHT-ENDS ACCUMULATION ZONE IN COMMUNICATION WITH AND FOLLOWING THE CONDENSATION ZONE, AND WHEREIN THE LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES ARE CONDENSED, ACCUMULATED, AND SEPARATED FROM THE WATER, AND RECOVERED, THE IMPROVEMENT COMPRISING, FEEDING AN EFFECTIVE AMOUNT OF AN ALKALI METAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF NAOH, KOH, LIOH, NA2CO3, K2CO3, LI2CO3, NAHCO3, KHCO3, LIHCO3, AND MIXTURES THEREOF IN SOLUTION TO THE OVERHEAD FRACTION AT A POINT BETWEEN THE LIGHT-ENDS FRACTIONAL DISTILLATION ZONE AND THE LIGHT-ENDS RECOVERY ZONE.
Inventors
👤 R Obrecht
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-09 03:41
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A PROCESS FOR THE PURIFICATION OF A CHLORINATED HYDROCARBON CONTAINING 2 TO 10 CARBON ATOMS WHEREIN THE CRUDE CHLORINATED HYDROCARBON IS PASSED TO A LIGHT-ENDS FRACTIONAL DISTILLATION ZONE TO FRACTIONALLY DISTILL THE CRUDE CHLORINATED HYDROCARBON AND SEPARATE AN OVERHEAD FRACTION CONTAINING LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES AND WATER, AND A BOTTOMS FRACTION CONTAINING THE CHLORINATED HYDROCARBON AND A SMALL AMOUNT OF HIGH BOILING IMPURITIES, THE OVERHEAD FRACTION IS PASSED TO A LIGHTENDS RECOVERY ZONE COMPRISING A CONDENSATION ZONE AND A LIGHT-ENDS ACCUMULATION ZONE IN COMMUNICATION WITH AND FOLLOWING THE CONDENSATION ZONE, AND WHEREIN THE LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES ARE CONDENSED, ACCUMULATED, AND SEPARATED FROM THE WATER, AND RECOVERED, THE IMPROVEMENT COMPRISING, FEEDING AN EFFECTIVE AMOUNT OF AN ALKALI METAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF NAOH, KOH, LIOH, NA2CO3, K2CO3, LI2CO3, NAHCO3, KHCO3, LIHCO3, AND MIXTURES THEREOF IN SOLUTION TO THE OVERHEAD FRACTION AT A POINT BETWEEN THE LIGHT-ENDS FRACTIONAL DISTILLATION ZONE AND THE LIGHT-ENDS RECOVERY ZONE.
Claim 2
Dependent Claim
158 words
IN A PROCESS FOR THE PURIFICATION OF A CHLORINATED HYDROCARBON CONTAINING 2 TO 10 CARBON ATOMS WHEREIN THE CRUDE CHLORINATED HYDROCARBON IS PASSED TO A LIGHT-ENDS FRACTIONAL DISTILLATION ZONE TO FRACTIONALLY DISTILL THE CRUDE CHLORINATED HYDROCARBON AND SEPARATE AN OVERHEAD FRACTION CONTAINING LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES AND WATER, AND A BOTTOMS FRACTION CONTAINING THE CHLORINATED HYDROCARBON AND A SMALL AMOUNT OF HIGH BOILING IMPURITIES, THE OVERHEAD FRACTION IS PASSED TO A LIGHTENDS RECOVERY ZONE COMPRISING A CONDENSATION ZONE AND A LIGHT-ENDS ACCUMULATION ZONE IN COMMUNICATION WITH AND FOLLOWING THE CONDENSATION ZONE, AND WHEREIN THE LOW-BOILING CHLORINATED HYDROCARBON IMPURITIES ARE CONDENSED, ACCUMULATED, AND SEPARATED FROM THE WATER, AND RECOVERED, THE IMPROVEMENT COMPRISING, FEEDING AN EFFECTIVE AMOUNT OF AN ALKALI METAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF NAOH, KOH, LIOH, NA2CO3, K2CO3, LI2CO3, NAHCO3, KHCO3, LIHCO3, AND MIXTURES THEREOF IN SOLUTION TO THE OVERHEAD FRACTION AT A POINT BETWEEN THE LIGHT-ENDS FRACTIONAL DISTILLATION ZONE AND THE LIGHT-ENDS RECOVERY ZONE.