REDUCING THE ASH AND SULFUR CONTENT OF COAL TO LEVELS COMPARABLE WITH OIL WILL GREATLY INCREASE COAL'S ACCEPTANCE AS A COMBUSTION FUEL.

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 383
Amount: $45,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1983
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Foster-miller Inc.
350 Second Ave., Waltham, MA, 02254
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 LESLIE S. RUBIN
 SENIOR ENGINEER
Business Contact
Research Institution
N/A
Abstract
REDUCING THE ASH AND SULFUR CONTENT OF COAL TO LEVELS COMPARABLE WITH OIL WILL GREATLY INCREASE COAL'S ACCEPTANCE AS A COMBUSTION FUEL. TO ACHIEVE THIS GOAL WITH PHYSICAL BENEFICIATION TECHNIQUES, IT WILL BE NECESSARY TO FIRST REDUCE THE ROM COAL INTO ULTRAFINE PARTICLES. THIS GENERATION OF FINES RELEASES MOST IMPURITIES AS DISCRETE PARTICLES WITH SPECIFIC GRAVITIES (2.2-4.2) SIGNIFICANTLY HIGHER THAN COAL (1.3-1.5). WITH SUCH A DENSITY DIFFERENCE A NEAR PERFECT SEPARATION IS THEORETICALLY POSSIBLE. HOWEVERTHERE IS NO EXISTING BENEFICIATION EQUIPMENT/SYSTEMS WHICH CAN EFFICIENTLY AND ECONOMICALLY AFFECT THIS POTENTIAL NEAR PERFECT SEPARATION WITH A FINE PARTICLE FEED. BASED ON THIS NEED, FOSTER-MILLER, INC. HAS DEVELOPED IN CONCEPT, A HEAVY FLUID BENEFICIATION CENTRIFUGE, COMPACT IN SIZE AND ABLE TO SEPARATE COAL AND WASTE INTO TWO HIGHLY DEWATERED SOLIDS WHILE RECOVERING MOST OF THE CARRIER FLUID. THIS CONCEPT USES A NON-TOXIC AND NON-CORROSIVE TRUE HEAVY FLUID WITH AN INTERMEDIATE SPECIFIC GRAVITY (1.6) BETWEEN COAL ANDWASTE IN COMBINATION WITH THE ADVANTAGES OF CENTRIFUGAL SEPARATION. THE SEPARATION POTENTIAL OF THIS CONCEPT CAN READILY APPROACH THE "IDEAL SEPARATION" ATTAINED IN LABORATORY FLOAT-SINK WASHABILITY TESTS.

* information listed above is at the time of submission.

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