US1426920A - Autoclave - Google Patents

Description

0. S; SLEEPER.

AUTOCLAVE.

APPLICATION FILED DEC. 17, 1917. 1,426,920., Patented Aug. 22, 1922.

2 SHEEIS-SHEET 0. S. SLEEPER;

AUTOCLAVE.

APPLICATION FILED DEC. 17, 1917.

Patented Aug. 22, 1922.

2 SHEETS-SHEJET 2.

cameo era OLIVER S. SLEEPER, OF BUFFALO,

MACHINE COMPANY, OF BUFFALO, NEW YORK,

NEW YORK'ASSIGNOR 'ro BUFFALO FOUNDRY &

A CORPORATION NEW YORK.

AUTOCLAVE. M

Application filed December 17, 1917. Serial No. 207,518.

To all whom it may concern:

Be it known" that I, OLIVER S. SLEEPER, a

citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Im-,

provements in Autoc-laves, of which the following is a specification.

This invention relates to an autoclave or monte-jus which is more particularly designed for treating or manufacturing material of a, corrosive character although the same may also be used for other purposes.

In the treatment or manufacture of material containing acids it has been customary heretofore to construct the chamber which receives the same wholly of protecting or acidresisting material, which was of a thickness intended to withstand the pressure under which the treatment or manufacture was conducted, but this was objectionable on account of the expense of making the chamber of such materials and also breakage under excess pressure.

It is the object of this invention to produce an autoclave in which the shell or chamber is constructed of a material which will withstand the highest pressure liable to be developed and to provide the interior of this chamber with a protecting lining which is low in tensile strength but high in acid resisting'properties, therefore permitting autoclaves to be produced at much less cost creasing the. safety of'the attendants.

In the accompanying drawings:

Figure 1 is a vertical section of one form of autoclave or monte-jus embodying my invention. Figure 2 is. a taken in line 22, Fig. 1. "Figure 3 is a ver tical section showing a modification of my invention. V

Similar characters of reference refer to like parts throughout the several views. 1

In its general organization the autoclave which embodies my invention comprises a treating chamber having a lower shell or body portion 1 which has the form of a deep receptacle or dish in which the materlals to be treated are placed, a head or a cap 2 secured over the opening. in the upper end of this body by means of bolts 3 and provided with a filling opening or passage 4, and a cover or lid 5 .removably secured to the head or cap over the filling opening at by means Specification of Letters Patent.

the liability of v and, also avoid undue corrosion as wellas in k horizontal section phenol,

Patented Au 22, 1922.,

of screws 6. A chamber thus formed by the body, head and cover maybe constructedof any suitable strong material which will res1st the pressure to which the same may be sub ected, for instance, caststeel, bronze or cast iron depending uponthe pressure desired and the nature of the material to be treated.

- If desired the material within the chamber may be stirred or agitated in any suitable manner, for instancepby the means which are shown in the drawings and which comprise an upright stirring shaft 8, journaled centrally in a bearing 9 in the head of the treating chamber and provided within this chamber with stirring arms 10. This shaft may be rotated by a variety of means, such as a horizontal shaft 11 jou'rnaled in a suitable bearing 12 mounted on the head of the treating chamber and provided at its outer end with tight and loose pulleys 13, 14 adapted to receive a driving bolt while its inner end is provided with a. bevel gear wheel 15 meshing with a bevel gear wheel 16 on the upper end of the stirring shaft.

- The contents of the treating chamber may also be either heated or cooled while the apparatus is in operation, this being preferably efi'ected by meansof a, jacket 17 surroundingthe body of the treating chamber and separated therefrom by anintervening space into which water may be introduced for cooling the contents of the chamber or heating of the same may be effected by introducing steam, hot 'oil, hot water o-rany suitable vapor or liquid into the jacket.

Although this autoclave may be used for a variety of purposes the same is more particularly designed for manufacturing 'dimethylaniline, diphenylamine, ortho amidopara amidophenol, anisidine, phenetidine, alpha-naphthol, sulfonicacids, H-acids, gamma acid, betanaphthylamine and its sulfonic acids, etc.

' In order toprotect the inside of the body of the treating chamber from the corrosive effect of the acid contained in the materials above referred to or any other materials which maybe treated, the inner side of the body of the treating chamber which receives the material to be treated is provided with a lining Although the material composition of this acid-resistant llning may be varied, it is amido-naphthol- 7 which is acid-resistant.

preferable to employ for this purpose a composition consisting essentially of cast iron which is very high in silicon but very low in tensile strength which material operates effectively to resist the corrosive action of the material which is being treated in the autoclave while the body or shell which sup ports this lining furnishes the necessary strength. This protecting lining may be mounted within the treating chamber in any suitable manner, for instance, as shown in Figures 1 and 2, this protecting lining is made or cast separate from the treating chamber or shell and constructed of a smaller peripheral diameter than the bore of the shell body so that when these parts are nested one Within the other an intervening space is provided between the same which is filled With a filling cushion or packmg material 18 whereby the lining is reliab y supported within the shell and practically forms an integral part thereof. The lining is centered with reference to the shell by a lug 19 arranged at its lower end engaging with the bottom of the shell and lugs 20 arranged externally on the upper part thereof and engaging With the bore of the shell, as shown in Figure 1. The filling, cushion or packing material between the lining and shell preferably consists of lead but any other suitable material may be employed if desired.

Instead of supporting the lining within the shell by means of an interposed filling, cushion or packing of lead a lining 21 may be cast or formed directly in cont-act with the inner side of a shell 22, as shown in Figure 3, which last mentioned construction is cheaper so far as initial cost is concerned but can not be so readily renewed when worn out.

By providing an autoclave having a shell which is high in tensile strength and a protecting lining which islower in tensile strength by reason of the fact that it is high in silicon so as to render the same acid-resistant, the advantages of both of these materials is obtained in one structure, thereby reducing the cost of the apparatus, rendering the same readily renewable and also increasing the safety of the same.

' I claim as my invention:

An autoclave comprising a shell of cast iron which is low in silicon and high in tensile strength, and an acid resisting lining which is arranged within said shell and which consists of cast iron high in silicon and low in tensile strength.

OLIVER S. SLEEPER.

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