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US 12,152,212 B2Granted
Method for recycling coal liquefaction residue
AssigneeUniversity of Science and Technology Beijing
InventorsHaibin Zuo, Yajie Wang
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Abstract
Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.
Claims9
A method for recycling a coal liquefaction residue, comprising:
- drying a coal liquefaction residue and pulverizing the dried coal liquefaction residue to obtain a pulverized coal liquefaction residue, the coal liquefaction residue comprising a waste product generated by a direct coal liquefaction process;
- subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue;
- and
- distilling the extract liquid and recovering an organic solvent to obtain a solid extract.
1 more element
Dependencies are inferred from the claim text.