OPTIMUM AIR-SPARGED HYDROCYCLONE FLOTATION FOR FINE COAL CLEANING WITH A PRESSURE SENSING CONTROL STRATEGY

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$49,966.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
11542
Agency Tracking Number:
11542
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
296 Chipeta Way, Ms 10124, Salt Lake City, UT, 84108
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
R. L ATWOOD
PRESIDENT
(801) 584-3013
Research Institution:
n/a
Abstract
RECENT TESTING OF AIR-SPARGED HYDROCYCLONE (ASH) FLOTATION TECHNOLOGY FOR FINE COAL CLEANING AT THE EPRI/CODC TEST FACILITY HAS SHOWN THAT THE ASH SYSTEM HAS GREAT POTENTIAL FOR UTILIZATION IN THE COAL INDUSTRY. HOWEVER, EFFECTIVE UTILIZATION OF THIS TECHNOLOGY RELIES ON OPTIMUM CONTROL ANDCONTINUAL ADJUSTMENT OF MANIPULATED VARIABLES WITH RESPECT TO FLOTATION PERFORMANCE SINCE THE RETENTION TIME OF COAL/WATER SLURRY IN THE ASH UNIT IS LESS THAN ONE SECOND. FLUCTUATION OF OTHER OPERATING VARIABLES IN PLANT OPERATION AND THE CURRENT INABILITY TO RAPIDLY DETERMINE CHANGES IN FLOTATION PERFORMANCE IN REAL TIME HAVE LIMITED THE USE OF THE ASH TECHNOLOGY IN COAL PREPARATION PLANTS. PRELIMINARY STUDY INDICATES THAT A CORRELATION BETWEEN PRESSURE MEASUREMENTS, OPERATING VARIABLES, AND FLOTATION PERFORMANCE CAN BE ESTABLISHED AND SUCH A CORRELATION MODEL CAN BE USED AS A BASIS TO CONTROL FLOTATION PERFORMANCE. SINCE THESE PRESSURE MEASUREMENTS CAN BE DETERMINED IN REAL TIME DURING ASH FLOTATION, AUTOMATIC CONTROL AND OPTIMUM ADJUSTMENT OF THESE MANIPULATED VARIABLES CAN BE ACCOMPLISHED. IN THIS REGARD INITIAL STUDY OF THE PROPOSED CONTROL STRATEGY IN PHASE I SBIR PROGRAM IS WARRANTED.

* information listed above is at the time of submission.

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