Conveyors: fluid current – Processes
Patent
1978-03-20
1980-06-03
Sebastian, Leland A.
Conveyors: fluid current
Processes
44 51, 252 1, B65G 5304
Patent
active
042059291
ABSTRACT:
This invention provides for an improvement in slurry transport systems, especially coal slurry lines. Instead of the usual use of fresh water resources which, in some geographic areas, are scarce for slurry transport, concentrated brine is used which is prepared from abundant salt water resources. Because of the higher density of this concentrated brine, it is a superior carrier of pulverized material. It dimishes the separation and settling tendency of slurry components during transport and particularly during shutdown. Other advantages in the use of concentrated brine include: freezing point depression which permits ease of transport during winter and at lower temperatures; dust suppression of stored coal; avoidance of spontaneous combustion of stored coal; inhibit freeze packing of dewatered pipeline coal; and diminished extent of corrosion in ferrous metal pipelines as compared to that which might occur with lower concentration brines. Important in the economy of the process is that the concentrated brine can be recycled. An inexpensive method for producing the concentrated brine is given.
REFERENCES:
patent: 3168350 (1965-02-01), Phinney et al.
patent: 3359040 (1967-12-01), Every et al.
Althouse et al., Modern Refrigeration and Air Conditioning, The Good Heart-Willcox Co., Inc., 1975, pp. 30 and 947.
Encyclopedia Britannica, vol. 8, William Benton, Publisher, Chicago, 1974, p. 305.
Lange's Handbook of Chemistry Handbook Publishers, Inc., Sandusky, Ohio 1946, p. 1363.
Rice et al., Environmental Considerations in The Use of Saline Water in Coal Slurry Pipelines, pp. 3-1 to 3-17, Procedings of "The International Technical Conference on Slurry Transportation" Feb. 3-4 1976.
Rosenthal Walter
Schiffman Louis
Klevit B. Max
Sebastian Leland A.
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