Classifying – separating – and assorting solids – Plural – diverse separating operations – Aqueous suspension – sifting – and stratifying
Patent
1977-12-14
1980-08-26
Halper, Robert
Classifying, separating, and assorting solids
Plural, diverse separating operations
Aqueous suspension, sifting, and stratifying
209211, 209 10, 210512R, 137561A, B03B 700
Patent
active
042194091
ABSTRACT:
An inlet line deflector and equalizer means for a cyclone for washing crushed and sized coal with water wherein low density (1.6 or less) washed coal particles escape through the outlet pipe above the bottom collector through the box of the cyclone while higher density (1.7 or higher) siliceous impurities drain out of the cyclone bottom. The higher density impure fractions may be recycled in another cyclone to further fractionate into purified coal and refuse. Pure coal particles flow out through the outlet pipe above the box and impure particles containing shale, rock, clay, etc. drain at the bottom. Laminar flow is uniquely created by (1) providing high solids of about 18% to 50%, (2) at high velocity of about 18 to 28 feet per second within the cyclone and (3) by placement of an inlet line deflector in a predetermined critical dimension in the intake pipe. Due to the deflector, substantially all of the incoming particles are directed away from the box to the outer wall which effectively reduces the cross sectional area of the intake pipe by about 19-32%, thereby assuring that all heavy particles of the inlet flow are at the outer wall, at the start of the cyclone, without ever starting any turbulence. The outlet at the bottom of the cyclone is restricted to slow the outflow of high density impurities which occurs downwardly at the very bottom at a slower rate than upwardly directed coal removal through the vertical pipe leaving the top of the box. Thus the restricted bottom outlet preserves laminar flow. The modified apparatus and new method provide high capacity production of high quality coal at a low energy requirement in a cost efficient manner better than existing equipment not so modified by the inlet deflector and manifold equalizers. Washing at the mine site in single or multistage fashion meets all of the specifications for 12,000 BTU per pound or better and not more than 14% ash for bituminous grade coal used in steam generation, metallurgy, and gasification.
The equalizer means is an essential feature in a distributor feed line to two or more cyclones and preserves the equal distribution of raw crushed coal particles and impurities fed to the separate inlet take off pipes serving from the distributor feeding into the respected cyclones.
REFERENCES:
patent: Re16389 (1926-07-01), Garner
patent: 394240 (1888-12-01), Allington
patent: 479231 (1892-07-01), Van Geldel
patent: 911258 (1909-02-01), Neumann
patent: 1514915 (1924-11-01), Laukhuff
patent: 1844369 (1932-02-01), Ross
patent: 1882329 (1932-10-01), Kreisinger
patent: 2119478 (1938-05-01), Whiton
patent: 2170689 (1961-02-01), Chang
patent: 2288297 (1942-06-01), Naiman
patent: 2622735 (1952-12-01), Criner
patent: 2656118 (1953-10-01), Chelminski
patent: 2696298 (1954-12-01), Oriffin
patent: 2819795 (1958-01-01), Fontein
patent: 2923151 (1960-02-01), Engle
patent: 2927693 (1960-03-01), Freeman
patent: 3353673 (1967-11-01), Visman
patent: 3372803 (1968-03-01), DeLisle
patent: 3577711 (1971-05-01), De Bernardo
patent: 3612276 (1971-10-01), Lowe
patent: 3724674 (1973-04-01), Loison
patent: 3745752 (1973-07-01), Gollner
patent: 3771728 (1973-11-01), Rolnavel
patent: 3802825 (1974-04-01), Upmeiel
patent: 3926787 (1975-12-01), Guy
patent: 3936262 (1976-02-01), Mehl
Exptl. Design of Hydrocyclones for Clarification of Waste Water, Tiederman et al., Oklahoma State Univ., pp. 39-48, Jun. 6, 1973.
Halper Robert
Saffitz Abraham A.
LandOfFree
Inlet line deflector and equalizer means for a classifying cyclo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inlet line deflector and equalizer means for a classifying cyclo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inlet line deflector and equalizer means for a classifying cyclo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1304632