Abstract: A method is provided for treating used potassium chloride (KCl) drilling mud for disposal. The process comprises feeding the mud into one end of a rotary tube, advancing the mud through the rotating tube and heating the mud by cascading action using lifters, to expose it to a hot gas stream, thereby partially drying the mud to lumps, further modifying the lumps by contacting them with a burner flame to form clinker pellets, and finally contacting the clinker pellets with a second flame to complete the drying process, producing dried clinker pellets containing the majority of the KCl in the mud, the pellets having a structure that resists the leaching action of water. The pellets further lend themselves to being evenly distributed over fields, so that unwanted excessive concentrations of KCl can be avoided.

Abstract: A drying apparatus for removing moisture content from a substance to be dried, comprises a peripheral wall defining a working space for drying the substance, the peripheral wall defines at least an inlet for charging the substance to be dried, an outlet for taking the dried substance therefrom and a drain. A rotary spiral blade assembly is disposed within the working space and has a lower end, at which the substance accumulated on the bottom of the working space rides on a transporting surface of the rotary spiral blade assembly. The rotary spiral blade assembly is rotatable at a predetermined rotation speed sufficient for forcing the substance on the transporting surface to climb up toward the upper end of the rotary spiral blade assembly. The rotary spiral blade assembly defines a path for the substance reaching at upper end thereof to fall down to the bottom.

Abstract: This invention refers to a dryer for sugar cane bagasse and/or medulla with vertical type, mobile bed with countercurrent waste combustion gases consisting of: a cylindrical body like a silo. The load is fed into the top of the cylindrical body and is then evenly distributed by spreading devices. Combustion gases from conventional boilers with a high energy content and normally considered as waste are fed countercurrently with the assistance of a ventilator into the bottom of the dryer through slots or holes. Once the gases have picked up humidity while going through the silo, they are expelled through the top by means of a conduct to the boiler's chimney.

Abstract: Disclosed is a drying apparatus using a rotary spiral blade to put wet substance as bean-curd refuse into vigorous circulation in the vessel of the drying apparatus, thereby bringing the substance into contact with the heat conduction surface of the drying apparatus at an increased efficiency. The vessel has a steam jacket surrounding therearound for heating the inner wall of the vessel, thereby providing heat conduction surface thereon. The blade may be heated by steam, providing extra heat conduction surface.

Abstract: The invention relates to a method for drying or cooling particulate materials in a machine where said particles are made to circulate, with a particle flow moving downwards along the inside of a chamber wall. The method is characterized in that a cooling or drying agent, or the like is introduced from above into the interface area between the particle flow directed downwards and the chamber wall.

Abstract: A combination surge and drying apparatus is described which includes first and second bins, a jacket surrounding the first bin for passage of a hot fluid therethrough, and air coils positioned within the jacket to be heated by the hot fluid. Air within the coils is directed into and through a hollow, apertured auger positioned to discharge material from the first bin to the second bin. An overflow port is included for returning excess material from the discharge auger back to the first bin to handle surges in demand for the material and also to facilitate drying.

Abstract: A rotary coal feeder having a casing with a rotatable shaft having a plurality of blades defining pockets for feeding coal therethrough. The blades rotate about a hollow core and heated air passes through the core to keep the blades warm and prevent coal from sticking thereto. A chamber at the bottom of the feeder casing also has heated air passing through it to assist in drying the coal. The air exiting from the core and the chamber is directed into the coal stream.

Abstract: A vertical cylinder for drying and heating granules which includes an inlet at the top of the cylinder, a conically tapered outlet at the bottom of the cylinder, a rotatable screening ring beneath the inlet, a chute beneath the screening ring and a scraper above the ring inlets for gases in the downward extending section of the cylinder, a shell and tube heat exchanger located coaxially in the bottom quarter of the cylinder, a horizontally movable grid as flow control device below the heat exchange and a discharge zone below the grid.

Abstract: A method and apparatus for drying and processing moisture-containing solids comprising organic and/or mineral inorganic components, wherein a maximum utilization of energy is attained by providing for an energetic cross-linkage between the drying and subsequent processing stages. With energetic cross-linkage between a pair of the component units of a system at least some of the energy generated in a first component unit is fed for utilization in a second component unit and at least some of the energy from the second component unit is fed to the first component unit so as to serve as at least a partial energy input for that first component unit.

Abstract: Apparatus for drying products of various types including particulate materials having varying degrees of moisture content including those moistened throughout, as by organic solvents, and which may be tacky in nature; the apparatus including a generally cylindrical vessel with a downwardly conical lower portion terminating in a dried product discharge opening, and a gas inlet conduit arranged to deliver a drying gas to the vessel in the region of and slightly above the discharge opening at relatively low pressure but with auxiliary screw or propeller arrangements for preventing access of the product, particularly if tacky, to the gas inlet conduit and also serving to assist in distribution of the drying gas throughout the product as it is agitated and distributed in the vessel and in countercurrent as it tends toward the discharge opening.

Abstract: A method and apparatus for collecting and drying animal droppings at room temperature to substantially prevent the decomposition of the protein and urea therein. The droppings are collected on boards positioned beneath cages for the animals, and air at ambient temperature is forced over the droppings. The dried droppings are periodically turned and removed by raking apparatus which moves over the boards and either forces the droppings down tubular means to a conveyor below or sucks the droppings from the boards with vacuum.

Abstract: A grain dryer employs an auger assembly featuring a hollow auger shaft through which hot water is circulated to heat the auger flighting and thus the grain. The water emerging from the auger shaft is then used to heat atmospheric air supplied by a blower, which air is then injected into the grain through a set of ports along the auger housing. The injected air entrains moisture expelled from the grain by the hot auger and exits from the auger housing through another set of ports along the latter.

Abstract: The present invention provides a drying device for coagulating and/or drying a fluid material having significant solids content, such as animal blood, to produce a dried solid product where the device includes generally an upwardly sloped elongate housing of generally semicircular cross section of selected diameter to define a coagulation chamber where the top of a portion of the chamber can be open, heat source means to selectively heat the housing, elongate screw conveyor means disposed within the housing with its longitudinal axis parallel to the longitudinal axis of the housing where the screw conveyor has a shaft with generally continuous helical blade means extending radially therefrom and having an outer diameter approximately equal to the interior diameter of the chamber and where the screw conveyor is adapted for rotation in the chamber to agitate the fluid in a portion of the housing and to convey solid material from a first lower end of the housing, toward a second, higher, end of the housing for e

Abstract: In regenerating an adsorbent by eliminating water and an adsorbed matter which are contained therein, the adsorbent is indirectly heated while descending within a drying furnace and is indirectly heated while ascending within a regenerating furnace in order to prevent the adsorbent from scattering due to water vapor and the adsorbed gas separated by the heating of the adsorbent and to prevent the adsorbent from burning itself due to heat.

Abstract: Polyester granules are crystallized and dried by passing hot gases of 120.degree. to 190.degree. C. in upward direction through the stationary layer of loose polyester granules resting in a cylindrical container on a plane or conical perforated tray slowly rotating about its vertical axis. The hot gas is passed through the material in an amount such that no fluidization is brought about. Under the action of the hot gas the granules agglomerate and the agglomerate is alternately slightly lifted and lowered again by stripping edges on the perforated tray whereby the agglomerate portion resting on the tray is disintegrated and the crystallized granules are discharged through slots behind the stripping edges in the tray.

Abstract: An apparatus for the treatment of divided solid material is provided having a chamber disposed about a generally vertical axis. Means are provided for introducing the divided solid material into the top portion of the chamber and further means are provided for introducing a pressurized gas into the bottom portion of the chamber. The apparatus includes first impeller means, supported by a first shaft adapted to rotate about the axis, and situated in the top portion of the chamber, for fluidizing the divided solid material in the top portion of the chamber to thereby prevent the divided solid material from clogging within the top portion of the chamber. Additionally, the apparatus includes second impeller means, spaced from the first impeller means, supported by a second shaft adapted to rotate about the axis, and situated in the bottom portion of the chamber, for radially dispersing the pressurized gas and for fluidizing the divided solid material in the bottom portion of the chamber.

Abstract: Method and apparatus are described for the production of solid fuel and steam by drying moisture-containing solids, such as refuse and sludge cakes, in a multi-stage heating zone by using the moisture-containing solids as the feed-water in a direct contact countercurrent flow pressurized boiler. After vaporizing the bulk of the moisture in the heating zone of the boiler, the solid residue is further dried in a multi-stage flashing zone. From the upper end of the heating zone is removed a nearly saturated steam including the water vapor evaporated from the moisture-contained solids by the heat of cooling of the introduced superheated steam. A portion of the removed steam equal to the vaporized moisture is heated and then directed to a turbine, generating all the power required to operate the system. The bulk of the removed steam equal to the introduced superheated steam is compressed, reheated and recycled through the heating zone.