The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
Nov. 21, 2020
Shanxi Coking Coal Group Co., Ltd., Shanxi, CN;
China University of Mining and Technology, Jiangsu, CN;
Jiangsu Hydrocarbon Clean Energy Technology Research Institute Co., Ltd., Jiangsu, CN;
Jinfang Liu, Shanxi, CN;
Xiahui Gui, Jiangsu, CN;
Yin Peng, Shanxi, CN;
Linsheng Gong, Shanxi, CN;
Tiezhu Zhao, Jiangsu, CN;
Pengde Zhang, Jiangsu, CN;
Zijian Ma, Jiangsu, CN;
SHANXI COKING COAL GROUP CO., LTD., Taiyuan, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou, CN;
JIANGSU HYDROCARBON CLEAN ENERGY TECHNOL.RES.INST, Xuzhou, CN;
Abstract
An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical COfluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical COfluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical COfluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical COfluid and precipitated at a bottom of the extraction kettle.