公开(公告)号：US3590091A

公开(公告)日：1971-06-29

申请号：US3590091D

申请日：1968-08-16

Applicant: SUN OIL CO

Inventor： SKARADA THOMAS E ,  HEDGE JOHN A

IPC: B01D9/00 ,  C07C7/14

CPC classification number: B01D9/0004 ,  B01D9/0036 ,  B01D9/0059 ,  C07C7/14 ,  C07C15/24

Abstract: 2,6-DIMETHYLNAPHTHALENE (DMN) CAN BE RECOVERED IN HIGH YIELDS AND HIGH PURITY BY CAREFULLY CONTROLLING THE TEMPERATURE OF CRYSTALLIZATION AT THE TEMPERATURE DETERMINED FROM FIG. 2 AT WHICH ALL 2,6-/2,7-DMN EUTECTIC IS SOLUBLE IN THE LIQUIDS PRESENT. FOR EXAMPLE, A 495510$F. CATALYTIC GAS OIL DISTILLATE FRACTION CONTAINING

WT. PERCENT 2,6-DMN 25 2,7-DMN 28 OTHER 47

WILL HAVE A EUTECTIC OF 2,6-/2,7-DMN IN THE WT. RATIO OF .725/1 THUS THE EUTECTIC REPRESENTS 48.3% OF INCOMING FEED. TO USE FIG. 2, THE WT. PERCENT OF EUTECTIC IS CALCULATED ON TOTAL FEED, EXCLUDING FREE 2,6-DMN, IN THIS CASE 50.6 WT. PERCENT EUTECTIC. FROM FIG. 2, 50.6 EUTECTIC IS SOLUBLE AT 37* C. THE TEMPERTURE OF CRYSTALLIZATION SHOULD BE NO LESS THAN 37* C. ($2*C.) TO AVOID CRYSTALLIZATION OF THE 2,6-/2,7-EUTECTIC AND NO MORE THAN 37* C. ($2* C.) TO AVOID DISSOLVING FREE 2,6-DMN.

公开(公告)号：US3546108A

公开(公告)日：1970-12-08

申请号：US3546108D

申请日：1969-03-17

Applicant: SUN OIL CO

Inventor： SKARADA THOMAS E

IPC: B01D11/04 ,  C10G21/12 ,  C10G21/02

CPC classification number: B01D11/0492 ,  C10G21/12