DE1546627A1 - Method and apparatus for continuously processing coal and similar material - Google Patents

Description

Salem-Brosius, Inc. - ..,. . _ΛΛ -

Carnesia. Pa., PSA "" * ~ * ^Ju ™ ¹⁹⁶⁵

■ Method and device for continuous Processing of coal and the like. Material

The invention relates generally to a method and a device for continuous coking and degassing and / or EaIzinieren- or. Burning carbonaceous Material, such as the so-called non-baking or sand or sintered coals, that is, coals with low Binding value, for example ahthracite charcoal, types of charcoal, Raw petroleum coke, pieces or briquettes with a certain content of bituminous fatty or coking coal and other carbonaceous materials or inerts with or without a bituminous binder. The invention also relates to the calcining or burning of dolomite, limestone and cement rock., the recovery of calcium oxide from carbonate sludge, the decomposition of carbonates, sulphates and Chlorides that inactivate activated carbon and the like

The above-mentioned degassing and calcining or

to firing has usually been carried out using the batch process

to ren. For example, a common method for

*** iiokshersteilung in a known vertical shaft coke oven _o carried out. " However, there are numerous types of coal

isj that with the conventional methods and devices -a

can not be properly processed, or bad

BATHROOM ORIGINAL - 2 -

and deliver unsatisfactory products when coked the traditional way. For example carries out the coking of bituminous "Western" -. -Charcoal in conventional devices inevitably turns into a bad product because of the proportion of the remaining volatile substances are too high and often unsustainable. In addition, the product is often lacking in this respect Uniformity as the volatiles are driven out or removed more strongly in certain parts of the batch than in other batch parts "

The calcination or burning of raw petroleum coke is usually done in a rotary kiln, whose rotary motion but causes a crushing of the coke particles, with some of the finer material together with The combustion products are blown out of the chimney · In addition, separation occurs in the material bed, see above that the larger particles move freely to the surface, while the fine particles in the middle of the bed remain. This means that the larger particles are degassed more thoroughly than the finer material particles.

Batches combustion process for limestone also have similar disadvantages in so far with respect to the uniformity of the product obtained in, as in this case obtained in a generally ⁿ dead burned lime, whose particles have on the outer surface a hard shell,

90 9 8 4 0 / 07.2.? ,,, *

BATH ORIGINAL

which destroys the ability of the lime to extinguish

To avoid these difficulties and disadvantages, the invention provides a method and an apparatus for the treatment of the mentioned materials or substances, which a more even and more uniform Guarantee product and, for example, an excellent coke product in the case of bituminous "Western coal" with a residual content of volatile substances of only 0.5 - Ί | 5% and when treating limestone provide a soft quick lime which is a desirable product in that it is essential Easier to extinguish than dead-burned lime.

More specifically, the invention provides a method for treating carbonaceous materials that thereby it is indicated that the handling Iu rig, s & ut is continuous near the outer edge one in a heated one Oven chamber located hearth is applied, where it forms a bed of material or on the stove, and the goods with repeated agitation towards one; Relocated the fclaterial outlet provided in the middle of the Ixerds and finally discharged into the outlet,

A preferred verifier for the treatment of this oyster Lalie / · -.is material on an essentially v-Jr ^r : -it, en herd ν. Ϊ brought along with de τ on it

909840/072 7 ORIGINAL BATHROOM - 4 -

The handling is ent ^ e ^ en ^ es *. Lzt to the claws arranged fixedly above the hearth, Scratching and / or seeing I see, ι is set in fine rotation » Dyy material is put in one in the middle of the hearth Deep furnace delivered and deujj. discharged from its bottom.

Such a device for the treatment of carbonaceous Substances with a heated chamber and a stove arranged in this chamber is according to the invention * - according to characterized in that in the center of the hearth a material outlet, a. «outer edge of the hearth facilities for the task of the items to be treated on the stove under training a bed of material on the latter and above the hearth downwardly projecting treatment members are that means are provided for moving the hearth and the treatment members relative to one another is and that the treatment members from the center of the hearth continuously distributed to the outside at intervals and are arranged so that they are the goods on the stove during the relative movement between them and the hearth continuously inwards towards the material outlet; move on.

In a preferred embodiment of the invention the hearth is essentially circular and has a deep oven in its center. Farther

90994 070727 " ⁵ "

BATH ORIGINAL '

facilities are provided to the stove along with the The goods on it opposite to the roasting paddles attached to the fixture above the stove to put in rotary motion. The bottom of the deep furnace has a discharge device.

The grate blades are preferably attached so that they are set individually in their position relative to the stove and the items to be treated located on it and thus adjust according to the respective 'requirements * can be.

In a preferred embodiment of the invention, the hearth is downward from its outer edge towards the center inclined to the movement of the material bed continuously shifting in the direction of the material outlet to support. Obviously supported Influence of gravity in such an inclined hearth the Inward movement of the material to be treated, which means that the Stirring or mixing the quake is facilitated.

To further support the circulation of the material bed According to the invention, plow-shaped roasting blades can also be provided.

In those cases in which the device according to the invention for relatively high operating temperatures

909840/0727

- 6 ORIGINAL BATHROOM

is seen, according to the invention are preferably devices for cooling the grate blades, for example by passing coolant through the grate blades.

In a preferred further development of the invention, the hearth falls from its outer circumference to the center downwards continuously in stages, whereby the circulation of the material bed when it is shifted into sighting on the material outlet is facilitated.

In a further advantageous embodiment of the invention, the grate blades are designed in steps, see above that in practically every installation position of the roasting blades there is a leading and a trailing roasting blade are, of which the latter engages deeper in the material bed than the associated forward roasting shovel, so that the bed of material is progressively displaced inwardly in steps, the upper portion of the bed being progressively displaced in front of the lower bed section and thus the circulation of the material bed during its movement is supported in the direction of the material outlet.

Further details, objects, advantages and features of the invention will appear more clearly from the following Description of certain preferred embodiments and certain e.g. Currently preferred method for implementation of the invention with reference to the drawings. Show it:

90 9840/07 2 7

- 7 - BAD ORIGfNAL

Fig. 1 ". A vertical section through an Erenn- or coke oven with the features of the invention,

Fig. FIG. 2 is a partial sectional view of FIG Rb "st shovel along with their brackets, accordingly the embodiment according to FIG. 1,: in an enlarged scale stat),

.Fig. 3 one. Cross section along the line III-III in Fig. 2,.

FIG. 4 a section along the line IV-IV in FIG. 2, Fig. 5. A partial section along the line V-V in. 3 »

Fig. 6 is a partially sectioned view of two roasting blades according to the invention, in an enlarged view js / letstick,

7 shows a section along the line VII-VII in FIG. 6,

8 shows a partial section view of a stove with roasting shovels according to a modified version. form of invention,

FIG. 9 shows one opposite FIG . 3 ..m 90 ° twisted section along the line IX-IX ii; FL ^. 10 and

9098 ^ 0/0727 - ^a ~ BAD ORlGlNAl,

FIG. 10 shows a partial plan view of the stove according to FIG. 8

and 9. ■ "" ". .. = ■ -.,. ■■■ .-- ■. .-.

The '' furnace or coke oven according to the invention shown in the drawings has a rotary hearth "TO, 'whose' inner hearth surface 11 is inclined from its outer edge downwards in the direction of a central, axially arranged deep furnace 1'2, which is connected to the Hearth 10 is formed in one piece and protrudes downwards from it ^.; "J) he rotary hearth 10 rests on rollers 13 which are spaced apart from one another and are arranged on an oven frame 14 and are" in the manner customary in rotary hearth furnaces " Motqr ^{: driven} by a ring gear and pinion drive. At the outer circumference of the Hefdflache 11 is a framing 15 vertically upwards from which carries a trough 16 filled with sand 17. Instead of sand, however, a liquid can also be used. . : ■. .

The furnace frame 14 has ceiling beams 20 which support a roof 21 made of fire-proof material with a central forge 22. The roof 21 has a downwardly projecting wall 25 with a flange 24; iaf which extends into the sand 17 provided in the trough 16 so that a circumferential sand seal is formed between the roof 21 and the hard 10. In Ofendach- 21 air feeds 25 are provided ^on: a am- Ofenrul.inen 14 mounted air line 26 are fed with air ^ ^ off and the air · "that if it against 'the cooker richtenvDie · -ü-e it <- walls 2J of the eB-

■ 9098Λ070727 - '■ ^ -

. ■ -. BAD ftt

badger are provided with feed openings 27, which are charged with air from a line 28 also attached to the frame 14 and the air is essentially lent guide radially across the stove. Burners 29 are provided in the furnace roof, which bring the furnace to operating temperature and provide additional heat for those reactions which are not or not completely run autogenously. Near the side wall 23, the roof is penetrated by a feed shaft 30, which is a perpendicular has adjustable discharge end 31, which extends up to extends to a point that can be selected by setting in order to place a material layer or bed on the hearth surface 11 To be able to apply a predetermined thickness.

Between the chimney 22 and the roof wall 23 is in the roof formed a radially extending, U-shaped cross-section possessing grate shovel section 32, the Bottom with slots 33 for the slidable inclusion of Clawing, scraping or roasting shovels 34 is provided, which ge consist of solid material or hollow plate-shaped structures according to the operating temperature that occurs may be with inner vertical guide plates 35. The latter construction is of course preferred at higher operating temperatures. Every roasting shovel is provided with a coolant inlet line 36 and an outlet line 37, which are also used for holding or suspension of the roasting blades. The coolant, such as water or air, is fed into the roasting

909840A0727 ÖAD ORIGINAL

- 10 -

blade 34 initiated and flows from one side the guide plate 35 under 'this through to its other side and via the outlet pipe 37 from the roasting shovel out. The lines 36 and 37 are'mit in the Slits 33 fitted refractory seals 38 and are between two angled profile Röstschaufelhalterri 39 -i-cL 40 held together by screws 41 and in turn with the aid of screws 44 between adjustable angle profile support beams 42 and 43 are attached. At each end of each adjustable support beam 42 and 43 are plumb set screws 45 provided that on fixture-fixed, according to 3 rest on the roasting vane bars 46 and 47 extending over the roasting vane section 32.

Below the deep furnace 12 is a rotating discharge table 50 provided for receiving the material discharged from the soaking furnace. Between the pit 12 and the Discharge table 50 is fixed in the frame 14 Discharge nozzle or scraper 51 installed, which is provided with a circumferential trough 52 filled with sand 53, into which a flange 54 protruding downward from the deep furnace extends to form a sand seal.

The kiln or coke oven described above works as follows: After igniting the burner 29 for the purpose of heating of the furnace to the desired temperature depending on the type of material to be degassed or burned

909840/0727

BATHROOM ORIGINAL - 11 -

is as introduced via the feed chute 30 and is continuously applied in the desired thickness and width ·, along the outer circumference of the hearth area .11 »Behändlungsgut. With the hearth rotating _: the material to be treated comes into contact with the roasting blades 34. Each roasting dish diverts the material that hits it into the adjacent concentric ring, so that the movement of material from the outer edge of the hearth surface 11 to the deep furnace 12 essentially takes place in spiral concentric rings of increasing width, so that the The surface of the narrowing rings is constantly increasing in order to ensure uniform depth. These concentric spiral rings are shown in Fig. 4 together with the relative position of each. The grate shovel is shown schematically opposite the ring concerned. The roasting shovels cause a. Repeated mixing and agitation of the bed of material, while the material moves downward from the hearth edge to the deep oven. This ensures more uniform heating and conversion, thereby providing a more uniform product, which is an important feature of the invention.

In the Aasführaiigsform of the invention, ^ em in Fig. 8-10 the stove 60 is stepped or sloping down like a terrace formed, each of the concentric rings by a perpendicular. Hache 61 is fixed so that the stove

, ^, 9098.40 / 0 ^ 72? -.

^C - - 12 -

BADORJGINAt:,. . "...

surface 60 is not inclined or inclined like the stove surface 11 of the embodiment according to FIGS. 1 to 7, but consists of a series of steps i * ¹ 'direction of movement of the stove is arranged in front of another roasting shovel 71. The first or in the direction of movement front roasting shovel 70 is higher than the second or "trailing roasting shovel 71" ^so that it first strips off an upper layer from the relevant step and adjoins it "releases the next lower stage, whereupon the second grate shovel strips off a lower layer of material, which becomes the upper material layer of the next lower stage. In this way, repeated circulation and reversal of the material to be treated is guaranteed. Of course, however, the roasting blade arrangement in pairs can also be used in the embodiment of the invention described at the outset.

Although in both embodiments described the invention flat, right-angled roasting blades are shown, of course, the most varied Roasting vane configurations are used; for example, they can take the form of a conventional one Riester plows have to turn the material stripped from the concentric rings.

Although certain, currently preferred training

909840/0727 BATH ORIGINAL

.- 13 -

Embodiments of the invention shown and described , the invention can of course also be applied to others within its scope Way to be realized.

909840/0727

Claims (12)

Claims Λ ./A method for the treatment of carbonaceous substances, characterized in that the material to be treated is continuously applied in the vicinity of the outer edge of a stove located in a heated oven chamber, where it forms a bed of material on the stove and the material is repeatedly circulated towards one displaced material outlet provided in the middle of the hearth and finally discharged into the outlet. 2. The method according to claim 1, characterized in that that with the further movement of the material to be treated in j A relative movement in the direction of the material outlet; between the hearth and the goods on it; and a plurality of protruding ones arranged above the hearth and continuous from its center in Outward direction is produced on spaced processing members, which are adjusted so, that they protrude at an angle of attack into the material bed, at which the latter continuously inward is moved further in the direction of the material outlet 3. The method according to claim 2, characterized in that the hearth for the purpose of moving the item to be treated relatively i__ is set in rotary motion to the treatment members 909840/0727 - 15 - 4-. Device for performing the method according to one of the preceding claims with a heated Chamber and a stove arranged in this, thereby characterized in that in the middle of the hearth (10) an Imaterial outlet (12), at the outer edge of the hearth means (30, 31) for the task of the item to be treated the hearth protruding downwards to form a material bed on the latter and above the hearth Treatment limbs. (34- or 70, 7Ό are provided, that means is provided for moving the hearth and the treatment members relative to one another and that the treatment members are continuously spaced out from the center of the hearth, and so on are arranged that they are on the stove during the relative movement between them and the Continuously move the hearth inward toward the material outlet. 5. Device according to claim 4, characterized in that that the treatment members to compensate for the reduction in size of the successive ones passing them Hearth sections with. arranged in the inward direction of the hearth constantly increasing distance from each other siud, so that the depth of the material bed on the stove remains practically constant. 6. Device according to claim 4 or 5> characterized in that the treatment members are Röstsehaufein. 909840/0727 _ - Io - BATH ORIGINAL - ΊΟ - 7. Device according to AnSpI ¹ UCh. 4, 5 or 6, characterized in that the material outlet is a deep furnace with a support device (51) provided in the bottom. 3. Device according to one of claims 4 to 7 characterized in that the devices (36, 37) for cooling the treatment members as well as means for the independent adjustment of the members are provided 9 «Device according to one of claims 4-" to 8, characterized marked da3 the treatment limbs for relief of the circulation of the material bed in its continuous Rescue in seal on the material outlet Plowforu. own. 10. Device according to one of claims 4- to 9> thereby ^ eKeXUiZeichnet that the hearth / -, ar facilitation of movement of the material bed in the direction of the outlet from his Auieura. and inward towards the ialuasla3 Ab'.viart sue igung bssitat. 11. Device according to one of claims 4 to 9> characterized in that the stove to facilitate circulation of the material bed during this continuous Movement towards the carcass outlet from its outer edge from RicLtang to the i „.ateri & laj.slaß continuously drops gradually. 9098 / · .0 / 0; 727 BAD ORfGINAt 12. Device according to one of claims 4- "to 11, characterized characterized in that the treatment members are arranged in stages so that at practical each of the outwardly successive installation points of these links - one each in the direction of movement front link (70) and a rear link (71) in the direction of movement are present, of which the latter extends deeper into the material bed than the former, so that the material bed on each of the named built-in parts of the step-by-step arranged links is gradually conveyed inwardly one after the other, the upper portion of the Material bed to facilitate the rolling of the same while continuing to move in alignment is passed on to the material outlet in front of the lower bed section. 13 · Device according to one of claims 4 to 12, characterized characterized in that the hearth is substantially circular, the treatment members are fixed to the device and the hearth can be rotated relative to these members. 909840/0727 BAD ORiGINAt Blank page