摘要:
Provided is an indirectly heating rotary dryer which has achieved enhanced energy-saving performance by reducing heating tubes non-contacting with material to be dried and reducing power required for rotation even when a hold up ratio is increased.Specifically provided is an indirectly heating rotary dryer having four partition walls 16 extended respectively along an shaft center C in an inner space of a rotating shell 10 at angle intervals of 90 degrees in the vertical and horizontal directions. The four partition walls 16 partition the inner space of the rotating shell 10 at a lateral section of the rotating shell 10 into four approximately-sector-shaped small spaces K respectively extended along the shaft center C. Heating tubes 11 are aligned in the rotating shell 10 in three lines extended respectively in parallel to the shaft center C of the rotating shell 10. The heat tubes 11 heat and dry the material H to be dried by supplying heated steam to the heating tubes 11 and performing heat exchange with the material H to be dried in the rotating shell 10.
摘要:
This invention relates to a rotary furnace that is designed for the heat treatment of solids comprising at least one rotary tube (1) into which the solids are introduced and a heating means outside of the rotary tube that makes it possible to conduct the heat treatment, characterized in that the rotary tube comprises—on its inside surface, in contact with the feedstock to be treated—at least 1 heating blade (30, 31, 32, 33, 34, 35, 36, 37, 38).The invention also relates to the use of this furnace for conducting the roasting of solid biomass.
摘要:
This invention relates to an improved method and apparatus for speeding up the drying process in the clothes dryer, saving the consumer time, energy, and the cost of that energy.
摘要:
The present invention provides an indirect heat-drying apparatus that is resistant to adhesion of the substance to be dried on heating pipes and gives a product having a desired and stabilized liquid content.The present invention relates to an indirect heat-drying apparatus, comprising two indirect-heating rotary dryers, i.e., the first and second indirect-heating rotary dryers that are arranged in series so that the dried substance from the first indirect-heating rotary dryer is supplied to and dried in the second indirect-heating rotary dryer as the substance to be dried; and a carrier gas-supplying means of supplying the carrier gas co-currently in the first indirect-heating rotary dryer and counter-currently in the second indirect-heating rotary dryer, with respect to the flow direction from the substance to be dried.
摘要:
The invention concerns a steam dryer, in particular a steam dryer intended for drying of concentrate materials, which dryer comprises a cylindrical, rotatable drum (11), in whose interior a set of steam pipes (12) consisting of a number of pipes has been fitted to revolve along with the drum. The steam intended for drying of the material has been arranged to be supplied into the set of steam pipes (12) by means of steam supply devices fitted at a first end (10A) of the dryer, and at the opposite end (10B) of the steam dryer (10), conveyor (16) has been installed to supply the material to be dried into the drum (11) interior. The dried material (25) has been arranged to be discharged through the first end (10A) of the dryer. The set of steam pipes (12) is composed of a number of pipe elements, each of which is composed of two axial pipes (12a, 12a′) parallel to the longitudinal direction of the drum (11) and of a number of pipe arcs (12b) fitted in the cross direction of the drum (11) and at a distance from one another in the longitudinal direction of the drum, which pipe arcs interconnect the two axial pipes of each pipe element. At the first end (10A) of the steam dryer (10), a steam distributor header (17) has been fitted coaxially with the drum (11), through which header the steam meant for drying has been arranged to be fed into each of the pipe elements, and, in a corresponding way, through which header the condensate coming from the pipe elements has been arranged to be removed.
摘要:
A rotary dryer for copper concentrate including a tube-shaped heat distributor fixed to the structural drum, with tubular holes in the annular cross section where hot nitrogen is forced to flow. The concentrate is heated up by means of a numerous set of heat transfer bars, which are fixed in the internal periphery of the heat distributor and point into the radial direction. As a consequence of the rotation of the drum, the heat transfer bars also promote the mixing and the transport of the concentrate in the downstream direction.
摘要:
A rotary kiln has a generally cylindrical housing centered on and extending along an axis inclined to the horizontal and having an upper upstream end and a lower downstream end and a drive that rotates the kiln about its axis. Particles to be heat-treated are fed into the housing at the upstream end and are extracted from the downstream end. A plurality of axially separate heat-exchange radiators fixed in the housing are connected axially in series and a fluent heat-exchange medium is flowed serially through the radiators from the downstream end of the housing to the upstream end of the housing.