WASHABILITY ANALYZER

University Coal Research Contractors Review Conference

AUTHORS: J.D. Miller ; PI G.H. Luttrell ; Co-PI ; Phone: [phone] phone: [phone]

Others  :  http://www.netl.doe.gov/publications/proceedings/97/97ucr/miller.pdf
PID  :  6016

来源: CEUR

【 摘 要 】

OBJECTIVE: The primary objective of the proposed research program is to develop a CT-based, on-line coal washability analyzer.A secondary objective will be to demonstrate the capabilities of the analyzer by comparing efficiency data from traditional float-sink tests conducted at three preparation plant sites with efficiency data generated by the washability analyzer. The scope of the proposed research program involves several tasks including (i) the acquisition and preparation of test samples for use in testing and calibrating the analyzer, (ii) the development of appropriate hardware and software necessary to adapt a CT analyzer for use in determining coal washability, (iii) the testing and modification of the analyzer using well-characterized coal samples, (iv) the evaluation of the analyzer's performance under simulated plant conditions, and (v) an evaluation of the technical and economic feasibility of implementing the CT-based washability analyzer on a commercial basis. Researchers from the University of Utah and Terra Tek Inc. will perform tasks related to the development, calibration and testing the analyzer, while technical personnel from Virginia Tech and Cyprus Amax will provide the required coal samples, evaluate the industrial capabilities of the analyzer, and promote system commercialization. WORK DONE AND CONCLUSIONS: • Effort for the subtasks assigned to VPI&SU is now underway to complete the preparation of size and density fractions of Stockton seam coal from Cyprus’ Lady Dunn plant, Cannelton, West Virginia., for use in the development and calibration of the CT-based washability analyzer. In addition, a field meeting was held with technical representatives from Cyprus Amax to discuss potential sites for obtaining the required coal samples and to identify promising commercial applications of the on-line washability analyzer. • Software has been developed to isolate particles of a 3-D packed bed of coal particles as established from x-ray CT data. To determine the size and mass density distributions, detection of surface boundaries and classification of the particle population will be critical. Particle contact inside the sample chamber is one of the problems which must be solved for on-line coal washability analysis. The frame work for software