CH89099A - Apparatus for the treatment of powdery materials. - Google Patents

Description

Apparatus for the treatment of powdery mallets.

The invention relates to an apparatus for the treatment of palverulent materials.

This apparatus comprises, arranged in an envelope containing the material to be treated, tubes endowed with the assembly performing the following functions: a) heats the material to be treated to the desired temperature; (b) Insufflate the material with a fluid suitable for its treatment; c) Aspirating the fluid to be evacuated from said material.

Said functions <I>a, b, c</I> can be ensured ei) principle by three different kinds of tubes .-1, B, C as it takes place in the apparatus represented, a, by way of example, in the attached drawing.

This apparatus coniporte a cylindrical casing endowed the nature of the walls can be chosen according to the material to be treated and sleep sealing, depending on the first case, can be total or partial. In this cylindrical envelope are arranged horizontally and parallel, at different levels, several series of tubes <I>:I, B, C</I> crossing its walls and the

material is placed there ei) sufficient quantity to cover the tubes.

The tubes A provide the material with a positive or negative additional heat, depending on whether it must be reheated or cooled. They are provided with fins intended to facilitate heat exchange.

The insufflator tubes B carry out the supply, under pressure or under pressure, of the fluid necessary for the treatment of the malaise, said fluid possibly consisting of gases, vapors or liquids. These tubes are pierced with holes in the lower part; they could be housed in overturned gutters, forming screens.

The suction tubes C effeotuent, by suitably produced depression, the evacuation, out of the treated material, of the harmful fluid, which may corist in gas, vapors or liquids. These tubes also present holes at the lower end; they are protected by overturned gutters forming screens.

It should be pointed out that the genera A and B can be, in certain cases, confused

in one breast. which plays, at Ja times, the ri)the thermal and insufflator.

Moreover. the tubes of each of the genera @.. B, C can be grouped into independent sections. communicating or not, and able to operate under different regimes, and which may vary, if necessary, during the treatment operation itself.

Finally, 1 device contained the tubes stis dit.s Petit etre <i, continuous or nun operation. Depending on the case, the treatment of materials which it enables may be one of the following operations: cooking, drying, refrigeration, mixing, bubbling, chemical reactions, distillation, etc.

It can be provided, in addition to the tubes. a number of auxiliary devices necessary for its operation, such as: agitators, separators, mixers, conveyors, fractionators.

The apparatus represented here comprises, in its upper part, an automatic feeding device. The evacuation of the material is done by the small bar of the truncated cone terminating the cylindrical envelope, and this material can be received on a conveyor with continuous movement. The adjustment of the speeds of the supply and evacuation devices can be established in a way < r assured for the natiere a passage in the apparatus at a suitable speed.

The apparatus appears in the first drawing i-represents a very general embodiment, without specific application of the invention.

Special provisions may be provided for carrying out the drying operation, with the use, for the recovery of the calories, of the latent heat of vaporization of the water.

In this case, the envelope of the dryer, instead of being cylindrical, is pi-eferably pai #allelipipedic and disposed vertically, the circulation of matter taking place therein by gravity from the top to the bottom.

The three multitubular bundles A, B, C are arranged horizontally and parallel. Each tube of the "aspii-ator" type C is housed in an inverted gutter forming

annular screen and leaving space in the material to be treated, so as to avoid clogging of the suction orifices.

The fluid which is sent to the heat sink A can be steam coming from: Either a boiler of any kind, with a pressure reducer on the steam trap line; Take a boiler of the "heating" type at low pressure with a pressure regulator.

The insufflation fluid sent to bundle B is pressurized from a compressor, while bundle C is connected to an exhaust fan.

The heat serving to raise the temperature of the material can be recovered as appropriate, in the mode of drying envisaged: the walls are licked by blowing air before it is introduced into the apparatus.

b) The material to be treated and cold passes through, had to be introduced into the apparatus, a suitable special radiator, the walls of which are heated by the discharge of the suction pipes.

c) These suction gases, in the first case where a boiler of the "low pressure heating <B>"</B> type is used, exit amerids from the grid of this last sleeps the first pressure regulator Sera planned in such a way as to act preferably on the blower of the hearth, and in particular on the additional fair required, this blower.

Claims (6)

R,E VENDICATION Apparatus for the treatment of pulverulent materials, comprising, in a mass of material contained in an envelope, tubes fulfilling all of the following functions: .- a) Giving the material the desired temperature; b) Infuse him with a clean fluid fr his treatment; c) Aspirating the fluid to be ei) extracted. S UB-CLAIMS 1 Apparatus according to claim, in which each of the functions <I>a, b, c</I> is ensured by a separate type of tube, the tubes fulfilling the function a being provided with fins, and those fulfilling functions b and c being pierced with holes b, their upper part. 2 Apparatus according to claim, in which the functions a and <I>b</I> are fulfilled by the same tubes, and the function c by a second distinct type, the tubes of the first type comprising holes in the lower part, and fins, those of the second, only holes. 3 Apparatus according to claim and sub-claim 1, in which the tubes reniplissant the functions b and c sollt house # dann goutti # res forinant eeran. 4 Apparatus according to claim and sub-claim 1, datis] are tubes reinplissant the function c sollt lodges dass gouttieres forinant screen. 5 Apparatus according to claim and sub-claim 2, in which dann] the tubes of both kinds sollt sheltered dann gouttieres i # reversed. 6 Apparatus according to claim and sub-claim 2, wherein the tubes fulfilling function c sollt houses Jans reversed gutters.