US1578376A - Method for the production of coke and tar from coal - Google Patents

Description

Patented M rt'so, I

aZZ whom itmay cf'oribivi we E PEWHMIR L B R Ge ie Beyit knownthat IyFRfiZ SEIDENSOHNUR,

' a citizen OffGermanm'residing at Freibe'rg,

the. Stutefef Saxony, Gerniany, hitye1 111 -1 ventedcertalu new, and usefullmproyeinents'l a in a Method for the Production ;-ofl;Coke1- and Tar from Coal: and il'l jdo; hereby dej 1, are the followingto-be a fully clear, 'and exact descrrptionof the 1nvent1on, such'as will enable others skilled in'the; art; tjoiwhich it 'appertains to make and use the same. 1

My inventionijhes for its object a method for the production from mineral coal of a' tar, still at ordinary temperaturesend rich 111 "undecompos'ed bitumen, simultaneously;

with the" production of a coke which is rich .in readily inflammable gases.

i In the Germs n patent specifi etion 372,244 a method and means are given for the production ofe' tar fromwet lign'ite, whichqis stlfi' at ordinary tempereture rand becomes liquid ate temperature of over 30-40? 0;,

seidtar being rich in undecom'posed,bitu

men. By carrying. out, this method a coke rich in gases anclreadi'lyv inflammable lnay v also-be obtained from the lignite, which, as

proved by actual experimentson renewed [heating to about 500 C. gives ofi a multiple V coke, obtained iron-ilignite, which is readily inflammable and rich in gases isequite cor.- rectly termed Ffhgn te-fle ne coke on account of its suitability tob'urn with ztvflame d'ue to'its richness ges i'ir uny appropriate grate. J

' In an efifort'to make-use of-thecontinuous working method according toGermanfp utent spechlcetioii No. 872,24at foi-"inineral coal,"

f;furtherdistillation treatment. A; e H eokeyfree of tar, obtainedffronr L to about 5 O0 1C.- 100 doubts have arisenas toitsepplicebi'lityk r Firstly itu see ued questionable Whethere tar stifi' at ordinary temperatures and rich undectmposed bitumen oouldjh e obtainedat all since,' for example, with the means hitherto employed forlextractingbitumen (more or 7 "less complete) .fromlignite scarcely any sue-Pf cess had been obtained with mineral c0211.;

cause thefseparationof the 'bitumen of the lignite inenearlyundecomposed forrn. The 1 fundamental dlfierencesf 1n the properties Appliceti r'fiiea oct 'beiz 1924; s antu 74 1,2se..-

of mineral, coal and 'l ig nitxyvere per eyop-r' U posed ,to theproduction. of a coke rich in".

gas from; mineral coal of :a quality 1 similar towtlgle' above-mentioned llgnitef flame-coke to u 'ith the avoidance as'fer fiSZPOSSilOlG of com bustible gusesyto thished to "be added: the

development of relatively large ges-quzrnti ties by the usual production of crude. tar-in rotary furua-ceand, finally, also the in clina-tion of. ainineral coal richfin tars-to fuse; 51nd bake together by treatmenttrwith ,liotgases, for exemple in a slow combustion generator. 1t is: Well known that,,'in spite of repeated stoking or the addition of, ligriit'e,"

a; continuous Working can hardly be maini tamed in a generator. I Consequently experij possess muchpossibility of success} ,Itlcame therefore as e'surprise whenit uns found that, a stiif tar and "it. flame-coke tree oi tar and rich n readily lnfla nmz ble gases-could n. fact be 'obtzun'ed fr o1n 1ninare free of. oxygen. andiere employed in German; Patent No. 872,244.

mineral coal liquic I v v tur tsfthe ett'1ng-po1ntof th'e ter' rieh 1n ine-nts' ei'med et ohtainingby'meens' ofslow; ,combustmn, products from mineral coal or the same highyalue as from lignlte, did not.

v oral coalbyy trezttment with hot gases which i 2 'lvhereasfaccording-$0 Fischers treatise entitled Gesemlnelte Abhendlunge'n j zui- 1' jKenntniss derKohlezly'olume' III, page 212 9 I 'crude'ter producediu the usual manner from to l at normal temper-av bitumen and produced in theeforesa-id mam] her is at about 809 C.'; also its'Viscosity-"and the amouht of "paraffin Wax are correspond" re -1y higher if: the still-tar is subjecteilito V The fliime ninerel jeo v by he n it ditions."

gen which are alun'uiunn} and'sloW-conibusdeyelops about 1' litre othighly fzilu'able' gas, very rich iii-methane eecl-12Qgr. substance) Whereasthe ordinary lull-coke fro'nimineral coal develops 1 only huloreover While thelergequantities of steam :sn allquentities yof i gas under the same 0011- necessary for the liberetion'of aitar riclrin" bitumen are not available when Working mineral coal; yet the co-ectionfoiffsaid steam' with lignite is considered'toabeessentialto] w y decomposition gases in tl'1e-gases;1ree of ox-y} The working of the extracting tippd-f, fretust may be carried through continuously;

W thoutformingconslflerable quantltles of; v

' effect is as follows:

opposition to the gas current.

Gases free of oxygen, consisting of generator gases or produced from other suitable substances, are carried throng-ha well ine .sulated shaft of about 3 metres in height 7 by introducing said gases at the lower end of a the shaft at an, initial teniperaturejof' about 500 C. Thequantity' of the gases must be so calculated that to 1 kg. of mineral coal to "be freed of tar, at least 56 cubic metres of the hot gas mixture are used. In that operation the coal is charged continuously in The gases laden with tar vapours, leave the upper end of the shaft at a temperature of about 100 Giand are then cooled in a suitable device and freed of tar and partially returned into the process whereby they are first used for coolingvthe flame-coke freed oftar and then mixed with the hot gases so that their quantity and temperature'are in accord with the aforesaid conditions.- r The quantity of gas, as herein given in cubic meters and kilograinmes (5-6111. per

one kg. of niineral coal) .is equal to 809 6 tar from coal, which consists 'insubjecting mineral coal in the form of a continuously downwardlytrayell ng column n countercurrent to the action of gases free from oxy gen at a rate of at least 8096 cubic feet'o'lt' gas per pound of mineral coal and at a temperature of the gas of about 500 C.

In testimony whereof I hereunto affix my 'FR-ITZ' SEIDENSCHNUR;

signature.