US2210457A - Chlorinating barrel - Google Patents

Description

Aug. 6, 1940. E. P. JONES CHLORINATING BARREL Filed Nov. 6, 1957 2 Sfieejts-Sheet 1 IN VEINTOR Edwm P Jones ms RNEY 1 E. P. JONE$ 2,210,451

- CHLORINATING BARREL Filed Nov. 19s? 2 Sheeis-Sheet 2 INVENTOR Edwm P Jon 5 ORNEY i Patented Aug. 6, 1940 PATENT OFFICE CHLORINATIN G BARREL Edwin P. Jones, Garden City. N. Y., Champagne Paper Corporation,

assignor to New York,

N. Y., a corporation of New York Application November 6, 1937, Serial No. 113,155

2 Claims.

My present invention relates to bleaching apparatus, and more particularly to an improved chlorinating barrel for use in bleaching paper pulp.

My present invention is adapted particularly to a device for-subjecting flax and hemp pulp to a chlorinating operation in advance of a final alkaline bleaching operation. The apparatus forming the subject matter of my present invention is adapted tosubject the flax or hemp pulp to the action of chlorine gas in the presence of water and wherein there will be no undue-escape of chlorine into the workroom in which the apparatus is located. It is possible, therefore, with the present apparatus to carry on the chlorination process with chlorine in'the presence of water without any discomfort to the workers directly engaged in operating the apparatus or 'to other workmen who may be in the immediate vicinity. in carrying out my invention I construct a barrel. preferably cylindrical in form and of necessity of a combination Of metal and wood, and wherein the metal parts are maintained out of direct contact with the chlorine gas at all times 25 so that such metal parts are not only maintained in the best condition but the chlorine gas can not dissolve any of the metal to the detriment of the pulp being operated'upon. As the process being carried out in the chlorinating barrel is part of a bleaching process this is a particularly important feature as it has been found that the formation of iron compounds adversely affects the color of the pulp being processed to a considerable extent. I

A feature of my invention therefore is an improved chlorinating barrel in which all metallic parts used in the construction thereof are maintained out of contact with the chlorine gas.

Another feature of my invention is an improved means for securing baflles within the barrel, while maintaining the metal parts out of engagement with the chlorine gas utilized in the chlorinating process.

Other features of the invention will appear as the description progresses.

In the accompanying drawings,

Fig. 1 is an end elevation of my improved chlorinating barrel, a portion of the head of such barrel being broken away to show the interior construction. r

i Fig. 2 is a plan view of the structure illustrated in Fig. l, a portion thereof being broken away to show'the means for conducting chlorine into the barrel.

(Cl. ta -144) 1h1g2. 3 is a section taken on the line 3-3 of is a sectiontaken on the line 1-4 of Fig. FiFigi. 5 is a section taken on the line 5-.-I of Fig. 6 is a section and Fig. i is a view in section through a stave of the barrel, 9. baiiie, and the metallic rod utilized for posltioning'the baffle in place.

7 Referring to the drawings, there is shown the cylindrical barrel in comprised essentially of staves I I placed side by side, and adjacent staves having interposed therebetween longitudinal tongues". The staves are bound together in cylindrical form by the hoops i3, bolts it being utilized to bring the stave's l0 into close relationship with each other. Each end of the cylindrical barrel is recessed as indicated at ii to form a recess in which fits a head. Each of the heads is made double, being composed of an outer head l6 and an inner head H, the boards constituting the outer head l6 lying at right angles to the boards I! constituting the inner head. Each of the boards of the heads "Land ii are recessed or grooved to receive the tongues l8. Further the inner head I! fits within the inner periphery of the barrel III while the outer head it fits into the recess 15 above referred to.

The barrel i0 is mounted for rotary movement preferably horizontally by means of trunnions' i9 and 20, said trunnions being secured to or formed integral with a spoked wheel or plate 2! and 22 respectively. Because of the fact that the heads are double it becomes a relatively easy matter to attach the spoke wheels or plates 2| and 22 to the heads, as the bolts 23 which extend outwardly from the heads ii are protected from contact with the chlorine gas which may be on the inside of the barrel III by the inner heads". w

The bolts 23 pass through appropriate perforations in the spoked wheel or plates 2! and 22 and are provided with nuts 24 by means of which the spoked wheels or plates 2| and 22 are secured in position. The trunnion I9 isan ordinary trunnion, working in any suitable bearing while the trunnion 20 is perforated longitudinally through its axis as indicated by the reference numeral 25 and such perforations continued through the heads l6 and I1 to which the spoked wheel of'plate 22 is attached so that the perforation 25 constitutes a direct passage and which communicates with the outer atmosphere and taken on line t-s of Fig. 1,

with the interior of the barrel. This perforation is lined throughout its length as indicated by the reference numeral 28 and such lining may be rubber, asphalt, glass or any other suitable material not affected by chlorine gas, either dry or in the presence of water.

Within the interior of the barrel are arranged baiiies 21, which lie parallel to the axis of the barrel and are equally spaced about the inner circumference of the staves I I.

The manner in which the same are attached to the barrel is illustrated in detail in Fig. 7. Referring to such figure, taken in conjunction with the showing in Fig. 1, the baflles21 are substantially U-shaped in form so as to flt over rods 28, the ends of which are threaded and extend through the heads of the barrel. The outer threaded ends of the rods 28 receive nuts 29 and by means of which the same are firmly held in position, such bolts and nuts also acting as a reinforcing means for the heads of the barrel. Between the rods 28 and the inner surface of the staves H is placed a filler piece 39, preferably of resilient material such as rubber. Screws 3i are screwed through the staves ll into the baflies 21, as illustrated clearly in Fig. 7, and serve to firmly hold the bailies 21 against the inner face of the staves II and if desired, and in order to positively insure that no moisture seep in between the baflle 21 and the inner face of the staves ll, such bai'iles 21 may have their inner surface coated with asphaltum, rubber or other suitable material.

I have provided a charging orifice, through which the barrel may be charged with pulp to be subjected to the chlorinating operation. This charging orifice is constructed preferably of a metal cylinder 33 having a flange 34 at one end, and a flange 35 at the other end, such flanges and cylindrical member being formed integral with each other. The passageway in the cylindrical member 33 is in registration with a perforation 36 formed in the cylindrical portion of the barrel.

Associated with the metallic cylinder 33 is a gasket 31, which it will be noted is interposed between the staves ll of the barrel and the flange 33, and is in association with the flange 35 and a cover 38, and also lines the interior of the metal cylinder 33. The metal flange 33 is placed on the staves i2 with a section of the gasket 31 interposed therebetween and such flange 34 is screwed into intimate gas and water tight association with the staves l2 by means of a plurality of bolts 39 and nuts 40.

' To insure that no chlorine gas or liquid comes into engagement with the bolts 39, the heads of such bolts are placed in recesses H on the inside of the staves II and the space between the inner surface of the staves and the head of the bolt 29 are plugged with plugs 42 of wood or other non-metallic material. The cover 38 may be of any suitable material, preferably metal which is aligned on its inner face with a disc 33 of rubber or other suitable protective material.

The cover 38 is secured to the flange 35 by a plurality of bolts 43 and nuts 45, the portion of the gasket 31 in engagement with the flange 35, and the disk 33 forming a gas and liquid tight connection between the cover 33 and flange 35.

At any suitable portion at one end of thebarrel II, but preferably relatively close to the charging orifice, 38, is arranged a discharging pipe 41. This pipe is shown in elevation in Fig. l, in perspective in Fig. 2 and in enlarged cross section in Fig. 3.

Referring to Fig. 3, the discharge piping 31, comprises a flange elbow of suitable material and of suitable dimensions, one flange 33 of which is secured to the staves H by bolts 49, and nuts 58. Such bolts 39 have the heads thereof located in recesses 5i in the staves II, and the space between the inner surfaceof the staves ii and the head of the bolts 39 is closed by plugs of wood 52. There is a gasket 53 of rubber or other suitable resilient and non-acid affected material interposed between the flange l8 and the stave ll. Also, the interior of the elbow is lined with nonacld affected material 54, and preferably lining 54 is integral with the gasket 53, or so attached thereto as to prevent leakage of gas or liquid outward of the barrel It. The other flange 55 of the outlet 41 has secured thereto, by the usual bolts and nuts, a valve 59 of suitable material and preferably lined or otherwise protected by non-acid afl'ected material, such as for example rubber.

The discharge piping 41 is also of particular utility in connection with the operation of the barrel through discharge opening 38. By properly connecting a pipe, such as a hose, to the valve 56, and which .pipe is preferably attached to an air pump or fan, it is possible when for example the process of chlorination is completed and the barrel ill in the position shown in Fig. 1 to remove the cover 38 of the charging orifice 36, after having opened the valve 56 whereupon the chlorine gas within the barrel I9 is drawn through the hose referred to and discharged into any appropriate place, thus preventing the escape of chlorine gas into the workroom in which the apparatus is located.

The barrel III is rotated on its trunnions l9 and 29 and into a position to bring the charging oriflce 35 into the uppermost position, or the position shown in Fig. 1. The cover 38 is removed and the pulp to be chlorinated is inserted into the barrel through the charging orifice 38, after which the cover 39 is replaced, and as will be described, the chlorine gas is admitted to the interior of the barrel and the barrel rotated continuousiy.

As it is desirable to observe periodically the condition of the material being chlorinated in order to ascertain the correct time to stop the process and remove the material from the barrel, I have placed an observation window in one head of the barrel, such window being shown in front elevation in Fig. 1, and in enlarged sectional elevation in Fig. 5.

Referring to Fig. 5, it will be noted that the observation window is located within the space bounded by two adjacent spokes and a portion of the rim of the member 2|, and comprises aligned perforations in the boards l8 and I1 of the head and such aligned perforations are closed on their outside by a gasket 51, a disc 58 of glass or other transparent material, and an annular metallic ring 59. Such members are arranged in the order named and with the gasket 51 in association with the outside face of the boards l6. The annular ring 59 is secured to the boards It by a plurality of wood screws 60, which act to force the disc 58 of glass or other suitable material into engagement with the gasket 51 and thereby provide a gasand fluid-tight joint for the observation window.

The trunnion 28 may be of any suitable length and preferably of a length to extend outward bebeing arranged about the interior periphery of yond the bearing in which the same may be located. Such a construction permits the establishment of a gas-tight, though rotatable connection between the trunnion 20 and a tubular member leading to a source of supply of chlorine gas. Preferably, such chlorine gas is contained in cylinders and under high pressure so as ordinarily to be in liquid form, and upon expansion will flow from the tubular member leading from such source of supply to the aligned perforations 26 and 25, respectively, of the interior of the barrel l0. Suitable means may be provided for regulating the pressure of the chlorine gas admitted to the interior of the barrel Ill, but as the nature of the source of supply of chlorine gas, as well as the means for regulating the control of flow of such gas does not concern the present invention it has not been illustrated and will not be further referred to.

Whereas I have described my invention by reference to specific forms thereof, it will be understood that many changes and modifications may be made without departing from the spirit of the invention.

I claim:

1. An improved chlorinating barrel compris-- ing a cylindrical body open at the ends, heads of wood arranged at said open ends, means for holding the heads and body in liquid-tight engagement with each other, baflles substantially U-shaped in cross section arranged within the body and with the open end thereof in engagement with the interior'of the body, said baflies the body and parallel to the axis of such body, metallic rods for positioning such baflles with respect to the body extending through the heads, an acid resisting filling block lying in the ,U- shaped baflles between the positioning rod and the open end of the battle, acid resisting composition lying between the open end of the battle and the interior surface of the body and metallic means extending through the body from the outside thereof for clamping the U-shaped baflies in position on the interior of the body.

2. An improved chlorinatingv barrel comprising a cylindrical body made of wood and with open ends, heads of wood inserted into the open ends of the said cylindrical body, hoops for clamping the cylindrical body and heads in liquid-tight association with each other, a charging orifice in the cylindrical body, a flanged cylinder surrounding the charging orifice forming a cylindrical charging opening, acid resisting material lying between the flanged cylinder and the cylindrical body, said acid resisting material extendin throughout the internal cylinder portion of the flanged cylinder, securing means for securing said flanged cylinder to the cylindrical body, said metallic securing means extending from the interior of the cylindrical body for each metallic securing means, for receiving the head of such securing means and a wooden plug filling the recess and preventing access of acid material to the metallic fastening means.

EDWIN P. JONES.

Images