Apparatus for production of stable slurry of milled coal and a hydrocarbon oil
AssigneesElectric Power Development Co., Ltd., Kawasaki Jukogyo Kabushiki Kaisha
InventorsYasuyuki Nakabayashi, Yoshio Matsuura, Masashi Hatano, Tatsuo Hagiwara, Masaaki Mikamo, Yoshimasa Ebihara, Yasutomo Tomura, Keiji Imai
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Abstract
The apparatus comprises a milling machine including a heated rotatable drum connected to means for supplying coarsely crushed coal and preheated oil to the drum wherein the coal becomes finely ground and homogeneously mixed with the oil, and having a discharge duct rotatably connected to the drum and slidably connected to a stationary discharge tower in which the coal/oil slurry is separated from water evaporated from the coal during milling.
Claims7
An apparatus for producing a liquid mixture of a coal and a hydrocarbon oil comprising:
- a ball mill (4) including a substantially horizontal rotary drum having a horizontal axis and inlet and outlet end covers (13,14), said rotary drum having inlet and outlet bosses (15, 16) of cylindrical shape respectively fixed with mutually coaxial alignment to said inlet and outlet end covers and extending axially outwardly of the drum;
- heat applying means (50) disposed around and secured to the outer surface of the drum;
- bearing means (18, 19) for rotatably supporting said bosses;
- means (44, 45, 38) for supplying through said inlet boss (15) into the rotary drum the coal which previously has been coarsely crushed and the hydrocarbon oil;
- means (7) for preheating the hydrocarbon oil prior to its being thus supplied into the rotary drum;
- means (20) for rotating the rotary drum to mill, agitate, and mix therewithin the coal and the oil thereby to form a liquid mixture;
- a discharge duct (90) fixedly connected to said outlet boss (16) so as to be rotatable with the outlet boss for conducting therethrough the liquid mixture as well as any water, which was originally contained in the coal and which has been separated by evaporation from the liquid mixture, out of the rotary drum;
- a stationary discharge tower (91) slidably supporting therein the free end of said discharge duct (90) so as to receive the liquid mixture and water thereinto, said discharge tower having a bottom part (92) to which the liquid mixture flows down and a top part (97) through which the volatile matter flows upward;
- means (94) for conducting the liquid mixture from said bottom part to a storage tank (95);
- and means (99) for drawing out the water from said top part, further comprising heating medium supply and discharge pipe means (58, 70) extending longitudinally through said discharge duct (90) and said discharge tower (91) and having one end connected to said heat applying means (50) and the other end disposed outside said discharge tower for supplying and discharging a heating medium to and from the heat applying means (50), said supply and discharge pipe means being rigidly connected to the rotary drum and rotatable therewith;
- and a rotary joint (72) connecting said pipe means to heating means (84, 87) for heating and circulating the heating medium.
Dependencies are inferred from the claim text.