DE1546637A1 - Method and device for agglomerating finely divided carbonaceous materials - Google Patents

Description

Method and device for agglomerating finely divided carbonaceous materials

The invention relates to, the invention relates to a method and an apparatus for agglomeration of finely divided coal particles and finely divided particles of _a US one, to a method and an apparatus for the formation of agglomerates of a predetermined size from separate or individual carbonaceous particles in a rotary retort "In particular, carbonaceous residue in a rotating retort to form a carbonaceous agglomerate product with a predetermined range of sizes »

The supply of particularly suitable coals for the production of blast furnace or metallurgical coke in common Coke ovens are now a limited process

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for the manufacture of coke which is independent of the restrictive writings currently in force in the coals used in current coking plants are imposed. By this process, an agglomerate, as follows is referred to as molded coke, produced which the desired Has properties of blast furnace or metallurgical coke. The molded coke produced has the desired strength, to carry the "charge" or the load of a common shaft or blast furnace, and is in multiple With regard to that produced in conventional coke ovens Superior to steel coke.

The process for preparing a suitable's Formkokses from a baking * coal is disclosed in US-i ^J atentschrift · 3073751 described. In this process, particulate coking coal (fat coal or bituminous coal) and finely divided coke (char) (the solid, carbonaceous residue of a ^{coal distilled between about 427 and 760 ° C (800 and HOO 0} F)) into a rotating, essentially horizontal retort introduced. With the coal and the coke, pitch can also be added to the rotating retort, if the coal used is a baking coal, the pitch increases the yield of forrn coke through the circulation of pitch. An increase in the strength of the molded coke is also obtained when using pitch with a charcoal. If the charcoal used is a low-baking charcoal, that's bad luck

important as a flowable binder to create suitable molding conditions for the production of strong mold coca. Shaped coke of the desired firmness cannot be made from awake coals without the addition of pitch or some

other suitable binders.

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BATH ORIGINAL

«~ 3» - ■

When using a baking coal, appropriate relative proportions of the coal, coke and pitch are introduced into the retort, namely: 35 to 60 parts by weight coal, 40 to 65 parts by weight coke, 0 to 15 parts by weight pitch "the temperature inside the retort is kept (750 ° F and 825) in the range between about 399 ° and 440 ⁰ C. The desired temperature of the mixture in the retort is maintained under substantially adiabatic conditions, ie ₀ by preheating the raw materials prior to entering the retort to _a ^ls sensible heat supply practically all of the heat required to obtain the desired temperature in the The retort is then rotated to cause the tumbling motion and intimate mixing of the solids. As the mixture in the retort is tumbled, separate or separate agglomerates are formed while partial distillation of the coal takes place , whereby tar is developed, the pitch of which serves as an additional binder for the agglomerates in the cycle, if pitch is included in the batch or the composition · The residence time of the carbon-containing solids in the retort is generally 15 to 40 minutes * The hot agglomerates become from de r retort obtained and then at an elevated temperature, ZoB. between about 816 ° and 982 ° C (1500 and 1800 °)

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calcined The calcined agglomerate constitutes the molded coke product represents, which is a density, strength and abrasion resistance of common metallurgical coke or blast furnace coke in fact, the strength is generally superior to that of freshened coke <>

The view of the 2 ^s opia coke can be allowed within certain limits. The proportion of agglomerates or the product from the shaft furnace, which is circulated and reintroduced into the rotary furnace, is varied. It is assumed that molded coke with a higher density than conventional metallurgical or blast furnace coke is superior to the conventional coke in the metallurgical furnace . By regulating the working conditions and the compositions or batches introduced in dia horizontal / Rotorte, it is now possible to produce a shaped coke suitable for use in the metallurgical furnace from coals that were previously unsuitable for the sole use of metallurgical coke. The restrictions on the compositions or build-up of various types of coals for the production of suitable metallurgical coke no longer exist when the process described in US Pat. No. 3,073,751 is practiced and the raw material source for metallurgical coke is now expanded through the use of this process ·

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As indicated in the process described in US Pat. No. 3,073,751, a relatively deep bed of carbonaceous material in the shaft furnace is desirable and useful in order to obtain uniformly sized agglomerates under the conditions described in this process. It has now been found that when larger-sized ovens are used, the formation of uniformly sized agglomerates is influenced by the absolute depth of the bed furnace, which is occupied by the carbonaceous materials "the absolute bed depth is measured at the lowest point in the semi-cylindrical bed of carbonaceous material within the cylindrical furnace and dimensionally designated _o in an oven with a di | ichmesser fron about 152 cm (5 ¹⁾ forms for example, a given amount of carbonaceous solids a bed with an absolute depth of about 17.8 cm (7 ") · the same amount of solids in a furnace having a diameter of about 91 cm (3 ¹⁾ would have a total bed depth, which substantially larger than that of the furnace with the

(5 ¹ ) / knife of about 152 ca ^ is.

Ee was found that when the bed out of the carbonaceous Material has an absolute depth of about 17.78 cm (7 ") or less, the agglomerates formed

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overall less than about 10.16 cm (4 ") with about 40% by weight of the agglomerate product being between about 1.9 and 5.08 cm (3/4" and 2 ") in size If the absolute depth of the same diameter furnace is increased to about 38.1 cm (15 "), the agglomerate product formed will contain between 10 and 20% by weight of the agglomerates having a dimension greater than about 10.16 cm (4") and the yield of the agglomerate, of the desired size, namely a size of between 1.9; 5.08 cm (3/4 "and 2") is to about 25 to 37 wt _o - reduced%, from economical viewpoint and in particular. In the case of a continuous mode of operation, it is essential and desirable to use ovens of larger dimensions and to use the largest possible volume of carbon

t
Maintaining solid material in the rotary kiln in order to thereby obtain maximum work performance or yield in the process. It is therefore particularly expedient and desirable to maintain as great a bed depth as possible in the kiln and yet uniformly classified agglomerates of the preferred size range to achieve.

The main purpose of the invention is to narrow the size spectrum of the agglomerates formed in a rotary kiln with an absolute bed depth above about 17.78 cm (7 ") and to increase the yield of agglomerates with the desired narrow size spectrum a device for agglomeration

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ORIGINAL BATHROOM *

15A6837

of carbon or »coal-containing material, which comprises a binder that is either with the carbon-containing Material is fed to the rotating retort or odea? autogenous is formed within the retort from one of the carbonaceous components «. The invention includes one within the rotating retort arranged auxiliary device to which exerted on the bed of carbonaceous material To release or cancel compression pressures or compression pressures where the absolute compression depth exceeds 17.78 cm (7 ")«

A discussion of the assumed operation of the auxiliary device to create agglomerates of uniform size can be seen more clearly when first the mechanism the agglomerate formation within the rotary kiln will"

The initial stage of agglomerate formation is the development or formation of a loosely or freely connected plastic Mass inside the furnace by mixing the hot coke with the particulate coal and the pitch binder This initial mixing is accomplished by rotating the oven. If the bed depth is below an absolute value Depth has been made by turning the agglomerates of the furnace and the tumbling motion of the carbonaceous mass therein formed in the following stages · The initial plastic mass breaks down during the tumbling motion

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15A6637

relatively fine plastic particles apart or on o The plastic particles experience a growth or Larger according to a mechanism of snowball formation when the particles hit the fairy-sloping upper surface of the Rolling the bed down «The repeated tumbling motion of the carbonaceous mass inside the furnace causes a continued movement Growth of small plastic agglomerates, whereby

fill up
they each other esgäjnsea-ufiet-feeliefea? n _T when they on

tumble or roll on the inclined top of the bed. The agglomerates continue to grow or increase, until the binder gains its plasticity as a result of the pyrolysis taking place inside the fifens under the working conditions loses ο After the binder loses its plasticity, solidify the agglomerates and there is essentially no growth or decrease in size and the agglomerates of Uniform size are removed from the furnace. In a continuous process, the first stage takes place the formation of agglomerates takes place at the charging end of the furnace and agglomerate growth occurs as the agglomerates move towards the discharge end of the furnace »

If the bed depth exceeds the predetermined absolute depth, agglomerates of undesirably oversized sizes and an undesirably large area of differently sized agglomerates are obtained. It is believed that the main cause of the undesirable product is the higher compression or compression exerted by the relatively deep bed _t

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that interferes with the desired tumbling movement or effect is caused o The large agglomerates are not strong and effective due to the rotating action of the furnace and tend to grow when the agglomerates are pressed against each other. for Agglomeratwactetum and leads to the formation of oversized agglomerates in the product * The difficulty in continuously fed ovens further increased in that the larger agglomerates move more slowly through the ^above fen and bring about additional difficulties in the control of the magnitude spectrum of the yield or delivery ,,

It has been found that the difficulties outlined above can be overcome by the inclusion of an auxiliary device, namely a plurality of longitudinally extending rows of scrapers or lifters in which Can turn off the rotary oven or the rotary retort and the before

can use bed depths exceeding certain absolute bed depths

Wendg gelaHgea-kea, with an increased percentage of the educated Agglomerate has the desired size range. " The longitudinal rows of rakes are attached to the walls of the rotating retort and have a plurality of prongs extending radially

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Extend inward to the center of the retort, the prongs are arranged at a distance from one another, preferably at a uniform distance, and support the formation of agglomerates, which have the desired range of sizes. the Scrapers avoid the undesired agglomerate formation described above by compacting or squeezing and cause the plastic particles to agglomerate by rolling hara on the inclined top of the bed » The scrapers tend to compress the bed from compression or compression forces due to the weight of the bed are present, to keep free or to dissolve and stir or move the bed in such a way that agglomerate formation is minimized within the bed due to compaction pressures o that obtained with the scrapers smooth rolling or tumbling action also avoids the undesirable size classification within the bed and that Growth of oversized agglomerates, making ovens of large ones Dimensions can be used in a continuous process.

There is a need in the art to provide a method and apparatus for forming agglomerates preselected size of carbonaceous material in a rotating retort of large dimensions, which a Contains a bed depth of the carbonaceous material therein that exceeds a predetermined absolute bed depth,

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There is also "a technical need for creation a method and a correction device for preventing the formation of oversized agglomerates of carbonaceous Material in a rotating retort of large dimensions with a bed depth of the carbonaceous material which exceeds a certain absolute bed depth,

There is another need to create one Rotary retort with a plurality of scrapers extending in the longitudinal direction with one radially extending inside Zinc iron for use in forming carbonaceous agglomerates of a preselected size single or separate carbonaceous materials "

There is also a technical interest in do creation of a method and apparatus for flhire enhancement the production of carbonaceous agglomerates from separate carbonaceous material in one Large size rotating retort «,

According to the invention comprises a rotating retort for agglomeration of finely divided carbonaceous materials at elevated temperature with the formation of a substantial Amount of agglomerates with a preselected range of sizes a cylindrical body part with a cylindrical! Inner wall, a support device that supports this body part at an inclined angle, a rotating device

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for rotating the cylindrical body part at a preselected one Business speed, a plurality of lengthways extending scrapers attached to the inner cylindrical wall of the body part, each of which Rake having a plurality of radially inwardly extending toward the center of the cylindrical body portion Has tines and the adjacent tines on each scraper or rake at a preselected distance from one another are arranged in order to regulate the size of the agglomerates formed in the rotating retort,

The invention also relates to a method for agglomerating finely divided, carbon-containing materials at an elevated temperature and forming a substantial amount of agglomerates with a preselected size range, in which finely divided, carbon-containing material is fed to an inclined rotating retort at an elevated temperature and a bed is made the carbonaceous material with an absolute bed depth above about 17 * 78 «nn (7"), rotates the retort at a & pre-selected speed in order to thoroughly mix the finely divided, carbonaceous material and the liquid binder and form agglomerates from them, the size the geull.deten in the retort agglomerates by kontinuierlichesPreigeben of the compression pressure, which is exerted by the weight of the bed of carbonaceous material during the rotation of the retort

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becomes, regulates, and a considerable amount of carbonaceous material from the retort in the form of agglomerates with a preselected range of sizes gains ₀

The invention is explained in more detail below with reference to the drawing

FIG _o 1 shows a side view, partially in section, in which the improved rotary retort according explained the invention and the method for the production of carbonaceous agglomerates of a preselected size wirdo

Fig. 2 shows a sectional view along the line 2-2 in Fig. 1, showing the arrangement of the tines and the manner in which the tines through the bed of carbonaceous Materials go, is explainedo

Fig. 3 shows a partial view of the rotating retort in section and in side view, wherein the rolling down the top of the bed Agglomerates and the prongs raised from the bed are shown «,

In the drawing, in particular in FIG. 1, there is a rotating border or a rotary kiln, indicated generally by the reference numeral 10, which is generally cylindrical Has shape and is supported on an inclined plane with respect to the floor 12 »The outer wall of the Retort 10 has a pair of annular slip rings 14 and 16 on this for the rotatable support of the

to
Beguiled 10 are attached to bearings 18 and 20 | camps

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18 and 20 are in fixed supports 22 and "stored for 24 · An annular gear 26 encircles the retort 10 and is secured thereto for rotation therewith _a A motor 2Θ has a Zahmrad 30, which meshes with the annular gear 26 in engagement, and provided to rotate the retort 10 via the gear 26 at a preselected speed in a predetermined direction. As shown, for example, in FIG. 2, the motor 28 rotates the retort via the gears 30 and 26 in a clockwise direction »

The retort 10 has a cylindrical inner surface or wall 32, an inlet part 34 and an outlet part 36 "" The inlet part 34 has an opening 38 through which inlet lines 4-0, 4-2 and 44- are located in the inner part of the retort 10 extend. A closure shown schematically at 46 extends around lines 40, 4-2 and 44 and yields

a seal or a closure for the inlet opening 38 to effectively close the inner part of the retort 10 from the surrounding atmosphere. Coal, coke and pitch are fed to the inner part of the retort 10 through lines 4-0, 42 and 44-, respectively blocking or interrupting means and provided in the lines 40, 42 and 44- to complete effectively the pipes from the surrounding atmosphere, thereby maintaining a non-oxidizing atmosphere in the retort 10 in the manner illustrated in FIG ₀ 1 of the "introduction of the carbon-containing constituents

0 0 9843/0004

in the retort 10 is semi-schematic and other suitable devices can be provided without departing from the scope of the invention ”. However, it is expedient and desirable to agglomerate the carbonaceous material in the rotating retort under non-oxidizing conditions, and suitable sealing or sealing means should therefore be provided at the inlet part of the rotating retort and for the respective lines which feed the carbonaceous components to the retort 10, _{or the like}

The discharge end part of the Brehr retort 36 has a casing or a housing 50 around it, which is also effective the inner part of the retort 10 closes or sealed off from the ambient atmosphere at the upper part of the casing 50 is a fan or blower 52 or other suitable Suction device through which the volatile carbonaceous gases released during the agglomeration of the carbonaceous Material in the retort 10 can be directed to a suitable tar condensation device where the tar can be separated from the more volatile components. The fan 52 can also be arranged after the tar condenser in order to reduce the contamination of the blower unit by the ■ condensation of tar to a minimum The tar is distilled to deliver the pitch, which is then circulated in the rotating retort 10 through a line 44

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is returned. The housing 50 is at the same level as its lower one Partly a pivoting gate or a funnel-like opening (gate) 54- through which the drainage from the retort 10 agglomerate product dispensed through outlet 36 to a receptacle, indicated generally by the numeral 56 is designated, for which further processing is made possible.

Within retort 10 are a plurality of longitudinally extending scrapers or rakes, generally are denoted by the reference numeral 58, present » Each scraper or rake includes an elongate bracket or strip or support member 60 which may be suitable The support members are fastened to the inner wall of the retort 52, for example by welding or the like 60 have a rectangular cross-section and preferably have a narrow edge part that is attached to the inside of the retort.

wall is attached, and e & e £ a? eeken radially outward from it

extends / inneof, as shown in FIGS. One

Plurality of prongs 62 extending radially inward from the Retort wall 32 extend, is attached to the retort wall 32 and on the respective support member 60. Own the prongs have a right-angled cross-section and are both on the support members 60 as well as welded or otherwise attached to the inner walls of the retort 32. The prongs

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Flashes a length of preferably between about 1/4 and 1/3 of the inside diameter of the retort 10, prongs between about 38.1 cm x and 50.8 cm (15 "and 20") were found in a retort cm with an inner diameter of about 152 (60 ") as appropriate the tines 62 the same distance can be arranged from each other in a substantially the desired size of the agglomerates. For example, if _o the preparation of agglomerates of a size of between about 1,9Ou. 5, 08 cm (3/4 ¹¹ U. 2 ") is desired, the tines having an axial spacing of about 7.62 cm (3" arranged), wherein the tines of a material having dimensions of about 0.95 cm u. Thus, the clearance between adjacent tines is approximately 6.66 cm £ (2 5/8 "). The tine spacing can be increased, but only slightly Increase in size range of agglomerates obtained «A tine spacing of up to about 11.74 cm (4-5 / 8") has been used, with agglomerates te with suitable sizes have been obtained. In the explained

Embodiment of the invention, the scrapers are attached at the same distance along the retort inner wall 32 and have a ring ratio of about 4 ° _o between them. up to the retort outlet part 36. Ee, however, it can be seen that in ab-

009 8 43/0004

hängigkei-b of the relative mixing of the carbonaceous materials in their introduction into the retort at the • ^ inlaßende 34, the scraper 58 can begin at a point located at a distance from the inlet portion 34 _o If the agglomeration of the carbonaceous material substantially at one point is complete spaced from the retort outlet portion 36, the scrapers 58 need not extend all the way to the retort outlet portion 36 and may terminate at a point spaced inwardly from it. The prongs 62 on each of the scrapers 58 extend radially inward to the center of the retort 10 and are aligned in the same radial cross-sectional planes. The bed of carbon-containing material is indicated generally by the reference numeral 64- and has a sloping top 66. The agglomerates rolling down the top 66 are indicated generally by the reference numeral 68 in FIG. 2. FIG. 3 illustrates the rolling or snowballing agglomerates on top 66, as outlined and discussed above. Figures 2 and 3 show the manner in which the prongs 62 move through the bed of carbonaceous material 64 and the compaction exerted by the depth of the bed of carbonaceous material - or cancel the pressing pressure.

009843/0004

The agglomerates are fed into the rotating retort 10 by feeding finely divided coal particles and finely divided particles of coke with a predetermined amount of pitch as a binder through the lines 40, 42 and 44. the inner part of the retort 10 formed Dar coke is heated to a temperature of about 538 ⁰ C (1000 ⁰ F) to the heat for the agglomeration of the fine coal particles and fine coke particles supplied ,, A bed height or absolute depth of about 38, 1 cm (15 ") in effine retort" approximately 4 £ _T 3 152 cm (60 ") in diameter is maintained and the retort is rotated at a preselected speed. The motor rotates the retort 10

28 mixes the heated coke and fine cohesion parts and the pitch until agglomerates are formed from the constituents. For use as metallurgical coke, it is desirable and convenient that the product be no more than about 7 »62 cm (3"), and preferably between about 1.90 and 5.08 cm (3/4 "and 2" The narrowest possible range is preferred, but a size range between about 1.90 and 5.08 cm (3/4 " _u » 2 ") is satisfactory. Agglomerates less than about 1.90 cm (3/4 ") are returned in the circuit to the end of the feed of the rotating retort 10, optionally with preheating for re-mixing with further coal and coke. However, it is particularly desirable that a maximum percentage of the agglomerate product of a size between about 1.90 and 5.08 cm (3/4 ¹¹ U '. 2 ").

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example

To explain the unexpected improvement in the method by means of the above-described device 6 separate trials were conducted in a rotary kiln or a rotary retort with a diameter of about 152 cm (5 ¹⁾ under substantially the same operating conditions NND with essentially performed the same ingredients. Experiments 1, 2 and 3 were carried out in a rotating retort which did not contain the scrapers according to the invention described above. In tests 4, 5 and 6 the scrapers were included. In experiments 4 and 5 the tines in _a Abst nd disposed of about 12.38 cm (4-7 / 8 ") from each other were» In the experiment 6 were the tines at a distance of about 6.66 cm (2 5/8 ") arranged from each other ·

Experiments 1 and 2 show the influence of the absolute bed depth under essentially the same working conditions without the scrapers. _O Experiments 3 and 5 explain the effect of the scrapers at the same circumferential speed of the rotary kiln Regulation of the size range. Experiments 2 and 4- explain a further comparison, the effect of the scrapers with a relatively large tine spacing under equivalent formation conditions <,

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BATH ORIGINAL

Experiments 4 and 5 and 6 clearly show how the Scrapers to increase the weight percentage of the agglomerate product having a size between about 1.90 and 3/4 "& 2" (5.08 cm) lead and agglomerate formation with a size above about 3 "in. with a bed an absolute depth of about 38.1 cm (15 "). The other properties of the agglomerates are caused by the Scraper not adversely affected.

In all of the experiments, a retrote was used with a ßurchmeeser of about 152 cm (60 ") used to mix to agglomerate baking coal and coke »Essentially were equal amounts of finely divided coke with a size corresponding to a sieve with a mesh size of

ρ about 2.36 mm or above, or up to zero meshes per cm (8 mesh χ 0) and finely divided coal with a size corresponding to a sieve with a mesh size of about 0.635 hun and above or up to zero meshes per cm (14 mesh χ 0) fed to the rotating retort. The coke was preheated to a temperature of about 538 ⁰ C (1000 ⁰ F) for supplying the heat for the agglomeration. In experiment 1, a bed height or absolute bed depth of about 18.3 cm (7 | 2 ⁿ ) was maintained and the retrort was carried out at a circumferential speed of about 58 m / min. (190 fto / min «) for a period of 4-0 minutes. After this period, a total of 52.6 # of product was above about 1.90 cm (3/4") in size and 41.3 % of

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Product νθΗ-a size in the range between about 1.90 cm and 5.08 cm (3Λ "and 2").

Experiment 2 was carried out under essentially the same conditions, the bed height or the absolute bed depth being increased to approximately 38.1 cm (15 ") compared to the 18.3 cm (7.2") used in experiment 1 , became. The Gfen was rotated at a peripheral speed of about 160 feet per minute (48.8 meters per minute) for virtually the same amount of time as in Experiment 1. The product of Run 2 contained 79.1% with a size above about 1.90 cm (3A ¹¹ ). It should be noted, however, that 20.6% by weight of the product with a size above about 10.1 cm ( 4 "). The desired size of about 1.90 cm to 5 * 08 cm had about 37» 8 ° / ° of the product ο So the percentage of product was the desired

th size in Trial is lower than the percentage of product desired in Trial 1, clearly indicating that an increase in the bed depth decreases the amount of desired product obtained in the agglomeration process »

The third experiment listed under No. 3 in the table below was carried out, essentially the the same loading components in the rotating retort of the same dimensions, which do not have any scrapers installed in it were introduced. A bed height or absolute depth of approximately 39 »1 cm (15") was maintained and

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the retort was operated at a circumferential speed of about 86.25 m / min (283 fto / min.) for a duration of 40 minutes in comparison with the speed of about 58 m / min (190 fto / min) and 48.8 m / min (160 ft "/ min.) Of Runs 1 and 2 held in rotation» 72.6% of the agglomerate product was above about 1.90 cm (3/4 ") in size; of this amount, however, 12.8% by weight was .% of the product is greater than about 10.16 cm (4 "). 24.8 % of the product in the test had the desired size of about 1.90 cm to 5/4 "lt.2", which was below the amount that had been obtained in tests 1 and 2 respectively « It can be seen that without the scrapers it was possible to obtain only 38% by weight of the product in the desired size range with a size between about 1.90 and 5 »08 cm»

For experiments 4, 5 and 6, 8 scrapers were used accordingly the scrapers identified by the reference numeral 58 in the retort used in experiments 1 and 2 The prongs 62 were made of a rod or rod material approximately 0.95 x 3.81 mm (3/8 "χ 1 1/2") and had a length about 53.3 cm (21 "). The scrapers 58 extended Over the length of the retort 10 and the prongs were in radiai len transverse planes arranged. In trials 4 and 5 "possessed the tines spaced about 12.38 Cjn (4-7 / 8 ") apart.

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In Experiment 6, the tines were arranged on centers or axles of about 7/62 cm (3 ") so that here the clearance or space between adjacent tines would be about 9» 20 cm (3-5 / 8 ") same material was introduced into retort 1Ό at substantially the same temperature in Experiments 4, 5 and 6. A bed height or absolute depth of about 38.10 cm (15 ") was maintained in the retort. In Experiments 5 and 6, to the retort at a gas velocity of about £ 86.25 m / min (283 fto / min.) and in experiment 4 at a peripheral speed of about 48.8 m / min (160 ft _o / min.) the material was gedrehto during subjected to a tumbling motion for about 30 minutes »The yield of product of the desired size was considerably increased with the built-in scrapers in experiments 4, 5 and 6. The scrapers brought about an improvement in the yield of product of the desired size in a deep bed, ie from about 38.10 cm (15 ")» even compared to the flat bed used in Experiment 1 _o The scrapers prevented the wax from

up to
turn of agglomerates ai% a size less than about

10.1 cm (4 "). In Experiment 6, a product with 81.2% by weight was a size above about 1.90 cm (3/4 ") and 78 weight-?» with a size between about 1.90 and 5 »08 cm. Run 6 clearly shows the improved production of agglomerates of the desired size through the use a rotating tread, which with the radially inward

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BAD ORiGfNAL

see extending scrapers described above Art provided iso Experiments 4 and 5 also show this improved size range of the product obtainable using the scraper "

The table below shows the results of tests 1, 2, 3, 4, 5 and 6. The product size is given in% by weight and the fractions are different Size are also listed is the additive weight percentage of the product with a size above approximately 1.9 cm (3/4 ") listed. Also, the mean product size and the bulk density of the agglomerates indicated in the table.

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Tabel

Try Mr. Zinc spacing cm 1-4.5 " 1 2 3 9 4th 0 5 6th I. (inches) 52 ', 8 52.0 51, 1
0 54, 1
0 54.0 54.0 CTv Product size, wt .- ^ e 18.3
7.2 38.1
15.0 38,
15, 25th 38,
15, 8th 38.1
15.0 38.1
15.0 I. % By weight coal + 10.1 cm (4 ") 58 48.8 86 0 48, 0 86.25 86.25 Bed height cm.
(inches) 3 - 4 "(7.62-10.16 cm) 3 / 4-1 ») 190.0 160.0 283, 0 160, 0. 283.0 283.0 Speed m / min 5.08 - 7.62 cm (2 - 3 " 1/2 - 3/4 ") 40.0 40.0 40, 3Ö, 5 30.0 30.0 (ft / min) 3.81 - 5.08 cm (1.5-2 " - 1.27 cm (- 1/2 ") 416 418.5 417 0 418 " 0 413 415 Tumbling time (min) 2.54-3.81 cm Total + 1.90 cm (3 / 4- ") 780.0 785.0 783, 785, 38 775.0 779.0 medium formation temp. ⁰ O 1.90-2.54 cm 1.90-10.16 cm (3/4 - 4 ") no Scraper 12, 1/8 12.38 6.66 (op) 1.27-1.90 cm 1.9 - 7.62 cm (3/4 - 3 ") . 4th 4 Vs 2 5/8 1 * 9 - 5.08 cm (3/4 - 2 ") 8th 0 medium size cm 0.0 20.6. 12, 1 O, 6th 0.0 0.0 (inches) 0.3 20.6 '12, 9 1, 4th 0.3 0.0 Bulk density +3/4 "(1.90 cm) 11.0 20.7 22 1 14, 2 15.0 .3.0 Agglomerates 13.5 14.9 11 7th 21 8th 26.3 16.0 - * 17.9 15.2 9, 0 27 2 34.6 41.2 cn 9.9 7.7 4, 3 12, 7th 13.2 21.0 CD 11.3 7.7 3, 1 10, 1 7.9 13.9 ■ CO 36.1 13.2 24, 6th 12, 2 2.7 4.9 CO 52.6 79.1 ' 72, 8th 77 2 8.9.4 81, 2 52.6 - 59, 7th 77 6th 89.4 81.2 52.3 58.5 47, 8th 75 2 89.1 81, 2 43.3 37.8 24, 76 61, 24 74.1 78.2 2.08 4.38 4, 87 3, 27 3.55 2.81 0.82 1.73 1, 3 1, 7th 1.39 1.11 29.2 31.6 32, 31, 32.7 32.5

Claims (1)

Claims 1c Process for agglomerating finely divided carbonaceous Materials at elevated temperatures to form a substantial amount of agglomerates with a preselected range of sizes, with finely divided carbonaceous Materials are fed into an inclined rotary furnace or an inclined rotary retort at an elevated temperature run the retort at a predetermined rate to thoroughly mix and form the particulate carbonaceous materials and liquid binder is rotated by agglomerates, characterized in that the size of the agglomerates formed in the retort by continuously releasing the compression exerted by the weight of the bed of carbonaceous materials or regulates the compression pressure while the retort is rotating » 2ο method according to claim 1, characterized in that the pressure is released or released by placing a plurality of them at a preselected distance from one another Guide tines through the bed as the retort rotates 09843/0004 3. Device for agglomerating finely divided carbonaceous Materials at elevated temperatures to form a substantial amount of agglomerates with a preselected range of sizes according to claim 1 or 2, consisting of a retort with a cylindrical body part, which has a cylindrical inner wall, a support device for carrying or supporting this body part an inclined or acute angle, a rotating device for the rotation of the cylindrical body part in a fcor- * certain speed and a plurality of at the cylindrical inner wall of the body part has attached X scrapers extending in the longitudinal direction, characterized in that each of the scrapers has one Has a plurality of prongs extending radially inward toward the center of the cylindrical body portion, wherein the adjacent tines on each scraper are each spaced a predetermined distance from one another in order to regulate the size of the agglomerates formed in the rotating retort 4o device according to claim 3, characterized in that the tines of the scrapers are aligned in radial transverse planes 009843/0004 5. Device according to. Claim 3 or 4, characterized in that that the prongs radially to junnen a distance of Extend 1/4 to 1/3 the diameter of the cylindrical body part., 6 "Device according to one of claims 3 to 51 thereby characterized in that the diameter of the cylindrical body portion is approximately 152 cm and the prongs are a length between about 38.1 and 50.8 cm (15-20 inches). 7 · Device according to one of claims 3 to 6, characterized that marked, egg * fe the scrapers at the same distance in Are arranged in the longitudinal direction of the cylindrical body part and have a circular or fiing ratio of 45 °. 8 · Device according to one of claims 3 to 7, characterized in that the prongs by a distance of about 7 "are 62 cm (3 inches) apart" 009843/0004 Lee rs e it