Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1988-02-22
1991-09-03
Howard, Jacqueline V.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
44 56, 2523635, C10L 132
Patent
active
050450875
ABSTRACT:
A method of preparing a stabilized or partially stabilized suspension of particles of carbon or of carbonaceous fuel materials in water characterized by comminuting coal (or other carbonaceous material) to form predetermined sized particles and coating the particles with at least a partial external coating of attached alcohol molecules of alcohols having from one to four (1 to 4) carbon atoms and thereafter admixing the alcohol coated particles with water to form the substantially uniform suspensoid of high solids content for use as a fuel for direct combustion, or as a feedstock for atmospheric pressure gasifiers or for pressurized gasifiers, or as a transport fluid to facilitate transportation of carbonaceous fuels by pipeline or by other fluid handling means. The suspensoid can contain up to 75 percent by weight coal, but contains less than 8 percent by weight alcohol. In a preferred embodiment, coal particles are first compacted and then comminuted to the predetermined particle size range to form an abundance of platey, lenticular, irregular and angular particles for forming a mechanically stabilized suspensoid, after coating with alcohol molecules and mixing with water, that exhibits the property of shear thinning so as to be pumpable or flowable with a lower apparent viscosity than the at-rest viscosity of the suspensoid fluid. Also disclosed are specific details of the method and preferred embodiments, including the composition of the suspensoid materials.
REFERENCES:
patent: 3996026 (1976-12-01), Cole
patent: 4045092 (1977-08-01), Keller
patent: 4089657 (1978-05-01), Keller
Fails James C.
Howard Jacqueline V.
Mantooth Geoffrey A.
The Keller Corporation
Zobal Arthur F.
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