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WO/1991/013667A1 |
A process and apparatus for reducing sludges, especially those sludges containing heavy metals and generated in elecroplating, to a solid state where the toxic constituents of the waste are prevented from leaching. The process involves m...
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WO/1991/013304A1 |
A direct-fired steam generator (14, 89, 154) supplies a mixture of super-heated steam and oxygen-deficient non-condensable gases to a pressurized dynamic conditioning vessel (12, 74, 76, 77, 116, 138, 230). The vessel (230) may consist o...
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WO/1991/010871A1 |
A controlled spinning bed of particulate material (14) such as coffee beans or the like is formed and maintained in a stationary chamber (10), the particulate material is mixed and uniformly conditioned. For example, coffee beans are uni...
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WO/1991/004776A1 |
A gas distributor and heating device for a spray dryer which includes a feed liquid atomizer (30) in a drying chamber, a gas distributor (20) for supplying a uniform flow of gas, a guide duct (40) for conveying the flow of gas from the g...
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WO/1991/005213A1 |
A dryer drum for drying bulk material including a rotating drum (10) having an inlet (12) for material to be dried at one end and an outlet (13) for dried material at the other end, a center shaft (11) extending therethrough, vanes (19, ...
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WO/1991/002586A1 |
A bulk materials (7, 7') reactor comprises a reactor housing (1) containing a moving bed (6, 6') of the bulk materials, a charging device (14, 16, 17) at the top and a discharging device (10) at the bottom of the moving bed (6, 6') and a...
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WO/1990/009967A1 |
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 ...
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WO/1990/008296A1 |
An installation for heat treatment of polydispersed materials comprises two cylindrical drying chambers (1, 2) mounted vertically and interconjugating along the generatrix of their lateral walls (5). On the upper end-face wall (16) of ea...
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WO/1990/005272A1 |
A rotary dryer (1) for the drying of, for example, biological sludge, comprises a rotatable drum having rake elements (6) with openings for the passage of sludge disposed on the inner side of the drum casing. A drying plant with such a d...
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WO/1990/005026A1 |
A flow dryer for comminuting and dehydrating matter using a stream of hot gas, said flow dryer being of the type employing an inlet duct in series with an agitator followed by a drying duct, said agitator having an inlet communicating wi...
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WO/1990/002303A1 |
Process for concentrating sludge-like substances, in particular faecal matter, using an electrically heated pipe (6) as a drying device for the substances, which are conveyed through the pipe (6) by means of rotating helices (8, 9).
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WO/1990/001663A1 |
A process and apparatus for generating steam from wet fuel, wherein water is evaporated from the wet fuel by bringing the fuel into direct contact with superheated steam. The steam is superheated by bringing it into contact with a hot he...
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WO/1989/012536A1 |
This invention relates to an improved aggregate drying apparatus and method where the dried aggregate is particularly useful for making hot mix asphalt. In accordance with the system, heat typically lost in exhaust gases and moisture eva...
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WO/1989/009638A1 |
A method is described in treating solid material to remove vaporizable substances from said material, comprising a thermal separation process, in which the solid material is subjected to heating and steam distillation for evaporation of ...
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WO/1989/009372A1 |
Liquids containing solid materials in soluble or suspended form are atomized in a chamber (1) while admitting a drying gas. Subsequently, partially dried particles settle on the bottom of the chamber or under this chamber on a perforated...
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WO/1989/008487A1 |
Used drilling muds containing substantial quantities or organic liquids and water-soluble salts are treated to render them environmentally acceptable for disposal purposes, by drying the muds to evaporate all liquids, aqueous and non-aqu...
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WO/1989/006337A1 |
An apparatus for the heating and/or drying of wet, comminuted material, e.g. organic material, comprises a stationary housing (2) with a rotatable, hollow rotor (3) with inlet (4) and discharge (5) of a heating medium and possible conden...
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WO/1989/005949A1 |
An industrial installation for drying a moist product comprises an enclosure in which a flow of moist product and a flow of drying fluid circulate. The enclosure comprises a lower rigidified caisson (40) which carries the heat-exchangers...
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WO/1989/003966A1 |
A static kiln (10) includes an annular heating zone (68), the inner wall of which is defined by an approximately cylindrical core (48). The core (48) and the outer wall (22) of the heating zone (68) are suspended to permit movement due t...
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WO/1989/002568A1 |
A method for drying solids, such as bark, peat, wet coal or the like by means of waste heat recovered from a rotary kiln (1). Solids are dried by simultaneously utilizing both the radiation heat of the shell surface (18) of the rotary ki...
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WO/1988/006409A1 |
A method of drying thermosensitive materials comprises their pulverization onto inert bodies circulating along a closed circuit in a flow of a heat carrier at high temperatures, in whose upper part, which represents no more than 1/3 of i...
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WO/1988/005258A1 |
In the present state of the art, the droppings conveyor belts arranged under several rows of superimposed cages turn back underneath the cages, resulting in several disadvantages. In order to eliminate such disadvantages, the return stra...
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WO/1988/004759A1 |
A method and apparatus for producing a dried material (20) from a mixture of solid particles colloidally suspended in a liquid, for example, for the production of fruit leather from a pulp and fruit juice mass, include floating an infrar...
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WO/1988/004760A1 |
A method for heating fibrous mineral insulation material (20) comprises an oven (22) divided into zones (30, 32), a conveyor (24, 26) for carrying the insulation material through the oven (22), means (38) for directing hot gases into con...
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WO/1988/004020A1 |
An apparatus for drying granular or pulverulent material, particularly moist sand. It includes a cylindrical drying chamber (1) with a material supply opening (15) situated at one end portion, and a material separator means (5) at its ot...
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WO/1988/004021A1 |
A main heating pipe (20) is inserted in a rotary cylinder (10). A number of branch pipes (21) are branched from the main heating pipe, and stretch downwardly and diagonally in the radial direction of the rotary cylinder. Ends of the bran...
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WO/1988/002090A1 |
The installation comprises a casing (1) in which internal and external tubes (2 and 4) are mounted concentrically in relation to each other. The lower end faces of the tubes (2 and 4) are connected, by means of a flange (15), to a disc f...
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WO/1988/001717A1 |
In a method and an apparatus for drying a particulate material, for instance bark, the material is disposed as an annular bed (11) on a perforated disc (10). The bed is moved along the disc by being rotated about its axis by pushing mean...
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WO/1987/007362A1 |
Process for producing dry metal chips by entraining fluid-containing metal chips (11) in a gas, introducing the gas into a cyclone separator (52) having an internal wall (54) heated to fluid-vaporizing temperature by combustion in a surr...
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WO/1987/007001A1 |
An anaerobic, pasteurizing conditioning system for treating matter such as whole and ground grain and minerals to increase the rate of conversion during digestion and thus the nutritional value thereof. The system comprises a direct fire...
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WO/1987/006321A1 |
A pulse combustion energy system including a pulse combustor (28) coupled to a processing tube (32) for flowing material to be processed therethrough, the processing tube being coupled to a pair of cyclone collectors (52, 56) for receivi...
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WO/1987/003075A1 |
A conditioning system for particulate matter comprising a vertical conditioning vessel (12) adapted for the counter-current flow of particulate matter and treatment fluid (96) therethrough. The particulate matter such as grain, is fed in...
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WO/1987/000911A1 |
In circular coolers (1) the product which is to be dried or cooled is intermittently tipped from a perforated floor (5) on to the next lower perforated floor. The product thus piles up on the perforated floor in layers of unequal thickne...
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WO/1986/007049A1 |
Method and apparatus for drying sewage sludge. The liquid sewage sludge is given a pasty consistency in a previous drying arrangement (10), and said pasty sewage sludge is shaped into particles having a relatively important surface in a ...
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WO/1986/006590A1 |
A conveyor with zigzag travel is formed by two continuous conveyor belts (A, B) and is particularly useful for processing materials. Each belt (A, B) has openings along its marginal portions and a set of driven belt sprockets (10-15, 20-...
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WO/1986/006746A1 |
Methods and apparatus for particularly dehydrating products such as corn syrups, fruit and vegetable extracts, dairy products or other temperature sensitive or hard to handle products. The methods and apparatus include using a pulse comb...
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WO/1986/004576A1 |
In a method and a device for drying and conditioning poultry manure or similar pasty materials in the form of particles, selective micro-organisms are, in a microbiological phase, fixed onto stable moulded carrier elements, added to the ...
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WO/1986/002150A1 |
A drier for the heating and drying of wet, comminuted organic materials comprises a stationary housing with a revolving, hollow axle or rotor (1) with inlet and outlet for a heating medium, and where the rotor has a number of annular dry...
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WO/1986/001284A1 |
A heat exchanger (10) for indirectly heating, drying and cooling materials comprises a hollow rotor (40) having an inlet (46) of heating and cooling medium and an outlet (47) of the medium or its condensate, a casing mounted on the hollo...
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WO/1986/000120A1 |
A seal assembly (10) for effecting a seal between a stationary housing (12) and a rotatable cylinder (16) comprising a plurality of arcuate segments (40) radially disposed about the outer circumference of said cylinder (16). Each segment...
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WO/1985/005013A1 |
Freshly cut green-chopped alfalfa is fed into an elongated lightproof dryer (5), conveyed on successively slower moving perforated conveyor belts (11) in successively thicker layers through successive regions through which decreasing amo...
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WO/1985/000273A1 |
A method and apparatus for expanding moisture containing tobacco. Tobacco is rapidly heated by a stream of heated gas, by contacting a high speed downdraft flow of the gas with tobacco while tobacco is in transit on a gas porous conveyor...
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WO/1984/002768A1 |
Method for drying sugar-beet cossettes, damped, respectively pressed cossettes, wherein drying air is blown through those cossettes along a conveying path. The drying air maintained at a high temperature is pressure-blown through the cos...
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WO/1984/002570A1 |
In the device, the method and utilization thereof for the industrial treatment by microwaves of alimentary pastes in bulk (56), the alimentary pastes (56) are conveyed by a mechanical conveying unit (9; 30; 59; 100; 101) controlled by a ...
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WO/1984/001846A1 |
The tridimensional model of a molecular structure comprises plastic modules (1) which are affixed with elements, i.e. cylindrical rods (2). On the whole surface of the rods as well as on the appropriate surface of sockets (5), provided o...
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WO/1984/001424A1 |
Apparatus for thermally treating food products by impingement heating or cooling, comprising a plenum (20) having a plurality of inwardly inclined front wall panels (50, 58) adapted to direct the flow of a temperature-controlled gas thro...
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WO/1984/001207A1 |
A method of drying particle material in a bed under pressure by indirect heating. The method according to the invention is carried out so that the steam driven off from the material is superheated with heat of a higher temperature, that ...
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WO/1983/002995A1 |
Device and method used for drying pulverulent and/or agglomerated and/or granulated solid materials, particularly to obtain dry soot pellets. The device comprises a container provided with installations and/or packings traversed by condu...
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WO/1983/002568A1 |
Apparatus for treating a slurry of cuttings in an oil base oil well drilling fluid, such as is typically used in drilling production wells. The cuttings having a coating of hydrocarbon substances after treatment in the apparatus are suff...
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WO/1983/002495A1 |
Dehydration tower (22) for previously agitated organic material carried by heated air stream, said tower contains selectively rotatable series of baffles (42, 43, 44, 45) for varying the path length of said material, and thus the residen...
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