US106054A - Improvement in lime-bm - Google Patents

Description

P. JQGBRBAULT-GUIGHARD.'

N.0'..1'o6,054. Patented Aug. 2, 1870.

IIT

i "is-situated on top ofthe r new 5W PIERRE'JAOQUES'enneAULr-euicndnn, or sT. BnRTnnvlN-Ln-LAVAL, v FRANCE.'

Letters Patent No. 106,054, dated August 2, 187 0.

IMPROVEMENT YIN LIME-arms.

To all whomit may concern :r .i

Be it known that I, PIERRE J AoQUEs GERBAULT- GUICHARD, of St. Berth'evin-'le-Laval, in theEmpire of France, have inventeda new and useful Improvei strnctedI in accordance with my invention Figure 2` is a vertical section of the same, as in liV cated by the dotted lin'e :z: x, `in iig, 1;' Figure' is avertical section, taken on the linefoy; f

Figure-4 is a horizontalsection, taken'on the linee` chaud" l. J '-Figure', a similar section, on the line 'w w Similar 'letters of reference yindicate corresponding `parts in the severahgnres.

Thisinvention consists` in a novel lformand constructionof a` continuouslime-kiln, whereby the op- 'eration ofjfeedingcan be carried oniwith more ease andl acciuacy,`and a more' perfect combustion ofthe fuel, and more uniform calcination of the lime are obtained than in lime-kilns as ordinarily constructed.

To enable others to construct lime-kilns in accorde` aneewithy my invention, I will proceed to describe thev same vwith reference to the drawing.

The kiln is huilt -in two parts, of which the upper,

" D, equal to about one-third'of the whole height, and forming a heatingchainber,`is set hack a certain disratoryO and receiver B.v i These two partsare connected by a vault, E, which laboratory O, and provided tance from thelowerlpart, which comprises the labo- `with iron doorsF.

' Openings, G, areformed in the 'lowerend of the heating-chamber D, opposite the doors F, through chamber-'D is' fed tothe .laboratory C.

Doors, H, are provided at the bottom ofthe receiver .which 'limestone thatis contained in the heatingi "better reach across the-fnrnace.

That portion'of'thekiln which comprises the receiver B and the laboratory C. is widened somewhat toward the middle,leaving the upper and ,lower openings narrower, thus allo-wing'the fuel to settle down' easierand mixsomewhat with the limestone.

The receiverB is provided at its lower mouth with .Both the heating-chamber D and that portion of the kiln comprising thereceiver B and the laboratory .0 are made ofthe form of'a parallelogram in their a division, a, which provides two outlets to said receiver.

vThe doors' H, arranged to said outlets, serve also to regulatethe admission of air necessary for the. combustion of fuel, more or less being admitted to produce faster or slower combustion, and so carry oni theoperation of caleinatiou faster or slower, as the demand requires.`

To prevent a too free passage of the air throng the limestone in the receiver, the latter has its corners' rounded, allowing the pieces of stone to fill out the space in the receiver closer.

The operation of this lime-kiln is as follows:

A proper quantity of fuel is deposited `on the limestone contained in the receiver B, through the doors F, when the operator, by meansA of a proper tool, rakes the hot limestone contained in the heating chamber D onto said fuel, filling up the space of the i laboratory and igniting said fuel. The doors F are then securely closed, to allow the process ofcalcina-V tion to go on slowly.

When the operator jndgesthe process complete, a. quantity of lime, equal to the amount contained in the laboratory, is withdrawn from the receiver 'through the openings-H, allowing the contents of the laboratory to lbe discharged intc'rthe` receiver, and leaving the laboratory ready fora new charge.

Lime-kilnsv thus constructed not only retain all the desirable properties of the ordinarilyfconstructed kilns, but they possess additional advantages.

The principalproperties common to all are- First, vthe utilization of the heat contained vin `the calcined limestone for heating the'air used for oombnstion.

` Second, .using the bulk of limestone contained in the receiver' as a natural grate for thefnel employed.

Third, the utilization of the h'ot gases emanatingA from the laboratory, for preheating the limestone con-- tained in the upper part of the furnace.

rIhe additional advantages obtained by this constructionare- V First, 4a more-'perfect combustion of the fuel, by

using the same at'the most favorable time and place,- and preventing the formation of carbonic oxide, which burns uselessly on thesurface in lime-kilns of ordinary construction.

Second, enabling the admission of air to he regu.

i lated for the proper combustion of fuel, without raising'the temperature in the furnace above 1,200 centi-y grades.

v'l?hird,preventing` the bad eli'ects of a too high tem,- peiature in one place of the furnace and a too low one in'another place. Y

Fourth, the construction of the furnace of the form of :t pa-milelograun, whereby the operator is en- The combination of' the heating-chamber D, vault :lbed to better reach across the furnace for the por E, and door F with the laboratory C and doors H, pose of renewing vthe clam-ges. y when constructed and arranged substantially as shown Fifth, enabling the operator to watch the progress :md described, for the purposes set forth. ofcnlcination, and the most, womble time for renew-V GERBAULT-GUIOHARD. ing the charges, lby menus of' the peepJioles in the doors F of the vault E. W'itnesses:

'What is here claimed, :md desired to be secured by J. GESLOT1 aine', Letters Patent, is PIERRE FOUQUET.

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