New method of coal gasification ash residue grading utilization by different quality

• Main Authors: CHANG ZHIBING, CHU MO, ZHOU LINGMEI, YANG YANBO
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2019
• Subjects: DISPOSAL OF SOLID WASTE; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The invention relates to a new method of coal gasification ash residue grading utilization by different quality, and belongs to the technical field of coal chemical industry. Coal gasification ash residues are directionally screened and graded according to preset specific size fraction, and so that components with the different carbon content and the ash content can be separated effectively; effective enrichment of components not fully gasified and with the high carbon content can be realized, ash residue components with the high carbon content and with the yield about 45%, the carbon contentgreater than 50%, and the ash content less than 50% can be separated and obtained, the ash residues can be recycled as fuel or gasification raw materials, the external discharging amount of the ash residues is decreased, and the resource utilization rate is increased; and in addition, components with the high ash content and with the yield about 55%, the ash content about 80% and the carbon content less than 20% can be se