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Patent Searching and Data


Title:
ADSORPTION SEPARATION OF META-XYLENE FROM AROMATIC HYDROCARBON
Document Type and Number:
Japanese Patent JPH08143485
Kind Code:
A
Abstract:

PURPOSE: To provide a method for extremely advantageously separating and gathering m-xylene from an 8C aromatic hydrocarbon feedstock in a commercial scale.

CONSTITUTION: This method for gathering m-xylene from an 8C aromatic hydrocarbon containing other xylenes by a liquid phase adsorption separation by using a sodium-substituted Y-zeolite as an adsorbent comprises maintaining the temperature of the adsorbent within a narrow range and improving the ability of the adsorbent by the hydration in an adsorption step. The level of the hydration is such a degree that the adsorbent has 3.0 wt.% LOI at 500°C temperature, and the adsorption temperature is within the range of 100-145°C. In a preferable example, the Y-zeolite is substituted with both of lithium and sodium in the interior.


Inventors:
SAANTEI KURUPURATEIPANJIYA
Application Number:
JP1994000287706
Publication Date:
June 04, 1996
Filing Date:
November 22, 1994
Export Citation:
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Assignee:
UOP INC
International Classes:
B01D15/00; C07C7/13; C07C15/08; (IPC1-7): C07C15/08; B01D15/00; C07C7/13
Domestic Patent References:
JPH069438A1994-01-18
JPS5834010A1983-02-28
JPS56158103A1981-12-05
JPS52933A1977-01-06
Attorney, Agent or Firm:
佐田 守雄