Title:
HIGH TEMPERATURE SOLVENT PRETREATMENT METHOD FOR IMPROVING YIELD OF DIRECT SODIUM-RICH COAL LIQUEFACTION OIL
Document Type and Number:
WIPO Patent Application WO/2018/095234
Kind Code:
A1
Abstract:
Disclosed is a high temperature solvent pretreatment method for improving the yield of a direct sodium-rich coal liquefaction oil. In the treatment method, firstly raw coal is subjected to a crushing treatment, the crushed coal is blended with a compound solvent in a reactor and is then treated by ultrasonic oscillation, the mass feed ratio of the crushed coal to the compound solvent is 2 : 1 to 1 : 1. The resulting mixed slurry after ultrasonic treatment is then subjected to a heat treatment under conditions of 200ºC-250ºC, the reactor is quickly heated by a flow sand bath, the heat treatment time is 20-40 min, the heat treated mixed slurry is separated by way of centrifugal precipitation, and the solvent can be recovered and used for a subsequent liquefaction experiment. The pretreatment method of the present application is easy to operate, has a recyclable solvent, and has an obvious promotion effect on the direct liquefaction oil yield. After the high temperature solvent pretreatment of the present application, the oil yield of direct high-sodium coal liquefaction can be increased by 10% -13% (dry ash-free basis), the overall conversion rate can be increased by 15% -18% (dry ash-free basis), and the method has good industrial value and application potential.
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Inventors:
LI XIAO (CN)
MENG XIANLIANG (CN)
CHU RUIZHI (CN)
WU GUOGUANG (CN)
MENG XIANLIANG (CN)
CHU RUIZHI (CN)
WU GUOGUANG (CN)
Application Number:
PCT/CN2017/110665
Publication Date:
May 31, 2018
Filing Date:
November 13, 2017
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
C10G1/00; C10G1/06
Foreign References:
| CN106701137A | 2017-05-24 | |||
| CN103589444A | 2014-02-19 | |||
| CN102124081A | 2011-07-13 | |||
| JPH09286987A | 1997-11-04 | |||
| US4252633A | 1981-02-24 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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