摘要:
A method and apparatus for dehydrating sewage sludge is described. Sewage sludge is placed into a dehydration chamber. The sewage sludge is heated to convert moisture in the sewage sludge to steam and cause gasification. Steam and gases are drawn from the dehydration chamber into a condenser, where the steam is condensed to form hot water. Gases are drawn from the condenser to a burner.
摘要:
An apparatus for collecting foreign materials such as rocks and tramp iron from material fed to a rotary dryer, wherein the material is dropped into the dryer at an intake end for tumbling within the dryer in a stream of drying gas flowing axially through the dryer. A trough is positioned spaced downwardly and beneath the intake for catching the heavy foreign materials dropping downwardly, and the foreign materials are carried outwardly by a screw auger driven by the dryer.
摘要:
An improved disc dryer for aggregate material which operates by rotating and impacting a tilted pan which holds the material being dried. Increased capacity is attained by transverse stabilizers on the impactor assembly, adjustable pressure air shock mounts for variable amplitude control of the impactor assembly, sets of dual support wheels upon which the pan rotates a reinforced support tract on the underside of the pan, and an adjustable feed box for supplying material to the pan at varying locations.
摘要:
A spin drier including a casing and a rotor equipped with at least one holder for a carrier, which is adapted to enclose a semiconductor material such as a silicon wafer therein, and embraced in the casing so that the semiconductor material placed on the rotor is dried by a gas stream which has been introduced through an intake port provided above the rotor, passes through the rotor and is to be exhausted through an exhaust port formed through a circumferential wall of the casing. The rotor is provided with at least three guide members on the outer section thereof, and each guide member includes a substantially vertically disposed curved surface with its convex side faced inwardly. The described holder is positioned between two guide members, to thereby guide the above described gas flow and thus prevent water, dusts and/or stains located on the bottom wall and circumferential wall of the casing from flowing back onto the semiconductor materials.
摘要:
A method and apparatus is disclosed for indirectly drying and preheating fine material, in particular, moisture containing coal or the like, comprises, providing a rotary drum which is mounted for rotation and has a plurality of heating tubes extending therethrough, supplying heated cooling gas from a dry coke cooling system to the heating tubes, supplying the moist material to the drum, adjacent the bottom thereof, removing the material from the drum after it has been predried and preheated, and returning or recycling a portion of the predried and preheated material to the rotary drum. The method and apparatus utilizes the heated cooling gas used to cool dry coke in a dry coke cooling plant from high temperatures to below 200.degree. C. It has been found that such heated cooling gas for a selected amount of dry coke is useful either in a series of more than one rotary drum or, to process moist material in a single rotary drum and also generate steam as a byproduct.
摘要:
Apparatus for the treatment, such as drying, freezing, crystallization of wet solids, slurries, suspensions, pulps and similar materials with heating or cooling.The apparatus is characterized by a treating body having two sections. The first section has a horizontally arranged axially flared annular treating drum rotatable around the horizontal or near-horizontal longitudinal rotation axis, and having end plates with a material feeding inlet pipe leading into the interior through one end plate, while the other end plate is provided with an opening arranged eccentrically in relation to the rotation axis. The second section of the treating body is connected rigidly and thus rotatably to the treating drum, the second section of the treating body having at least three duct-like oblong treating members leading into each other. The longitudinal axes of the treating members together form a zig-zag or similar line, and they intersect the rotation axis of the treating drum--which is the common axis of rotation of the treating drum and of the part forming the second section of the treating body and consisting of the treating members outside the treating drum.
摘要:
Apparatus for dehydrating organic waste material in a rotary oven. The oven is within an insulated chamber and the oven is heated by a burner. The waste gases from the oven are recycled and burnt in the burner. The dried product is usable for soil enrichment and for feeding to animals.
摘要:
Apparatus for performing operations of agitating a material to be treated in a rotary kiln and scraping away substances adhering to the inner wall of the rotary kiln effectively at a high efficiency so as to operate the rotary kiln continuously for a long time and perform the heat treatment in the rotary kiln very smoothly.The apparatus includes a cylindrical cage having openings enabling a material to be treated to pass therethrough in both the axial direction and the radial direction, the cage including a supporting frame and a plurality of plate members extending in the axial direction of a kiln proper and being arranged at prescribed intervals on the outer periphery of the supporting frame, the cage having a diameter smaller than the inner diameter of the kiln proper and being inserted in the kiln proper in such a state that at least one of the plate members is contacted with the inner face of the kiln proper so that the cage is freely rotated with rotation of the kiln proper, and stop means engaged with a part of the cage to intermittently stop the rotation of the cage.
摘要:
An apparatus comprises an elongated boring bar having a cutting edge at its front end, an assembly coupled to the boring bar for reciprocally moving the boring bar axially of a rotary kiln, and an assembly for rotating the boring bar. The boring bar is advanced into the kiln with the cutting edge retracted from the kiln wall and, upon clearing the tuyere dam of the kiln, the cutting edge is brought close to the kiln wall by rotating the boring bar. The boring bar is then advanced again to scrape off and remove solid deposits from the kiln wall.
摘要:
A rotary kiln comprises a rotary drum having a large number of lifters along its inner wall. The end portion of each lifter which is extended interiorly of the rotary drum is bent in the rotational direction of the rotary drum. To the end of each lifter are attached a number of chain like fittings which makes sliding movements along the inner wall surface of the rotary drum and along the upper and lower faces of each lifter in accordance with the rotation of the rotary drum. The chain like fittings so act as to prevent a substance to be dried from adhering to the inner wall of the rotary drum and to the lifters through making sliding movements in accordance with the drum rotation. Further, since the chain like fittings act to break the substance into small pieces and to release it upon dropping due to their own weights, it is dried effectively.