US2655905A - Steam purifier - Google Patents

Description

Oct. 20, 1953 REHM 2,655,905

STEAM PURIFIER Filed Aug. 26, 1950 v s sheets-snt 1 a. "II/III, i

iffy? eyd Oct. 20, 1953 REHM 4 2,655,905

STEAM PURIFIER Filed Aug. 26, 1950 3 Sheets-Sheet 2 7&2 l1

EH3? 1 can,

flffarrzeys G. A. REHM STEAM PURIFIER Oct. 20, 1953 3 Sheets-Sheet 3 Filed Aug. 26, 1950 Patented Oct. 20, 1953 UNITED STATE STEAM PURIFIER' Gustav A. Rehm, Springfield, 111., assignor to Springfield Boiler Company, Springfield, 111., a corporation of Illinois Application August 26, 1950, Serial No. 181,644

My invention relates to an improvement in steam purifiers, and has for one purpose to provide means for purifying the steam as it flows through the steam drum of a boiler.

Another purpose is to provide improved means for collecting impurities and condensed moisture from steam.

Another purpose is to provide an improved assembly in which such a purifier is used.

Another purpose is to provide an improved unitary structure which may readily be applied to and removed from a boiler.

Another purpose is to provide a multi-unit steam dryer, including an upper unit or group of units and a lower unit or group of units, through which the steam progressively passes.

Other purposes will appear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically in the accompanying drawings wherein:

Figure 1 is a vertical transversesection through a steam drum to which my invention has been applied;

Figure 2 is a section along ure 1, on an enlarged scale;

Figure 3 is a section on the line 2, on an enlarged scale; and

Figure 4 is a section on the line 4-4: of Figure 2, on an enlarged scale.

Referring to the drawings, I generally indicates the wall of a steam drum partially filled with a bodyof water 2. Steam delivery tubes or ducts 3 extend to the drum 1 and deliver steam to its interior, above and below the water level. If desired, a bafile 4 may be employed to divert the steam downwardly toward the surface of the water. 5 illustrates any suitable water tubes or ducts. 6 illustrates a duct or ducts extending from the drum I., It may, extend, for example, toa super-heater. I2 is a bottom structural ele- 4 the line 2-2 of Fig- 3-3 of Figure 7 Claims. (01. 122-459) walls 200, separated by a substantial space.v It will be understood, however, that the form of the troughs may be widely varied, and they do not,

of themselves, form part of the present invention. Various types of troughs which I may employ are illustrated, for example, in my copending application Serial No. 30,371, filed in the United States Patent Office on June 1, 1948, now U. S. Patent No.

' downwardly flowing water in the troughs.

ment to which'verticalframe elements 12a may 7 be connected. formed of sheet metal side, bottom and top walls.

Frame supporting members 13 project downwardly, as at l3a, and are shown as notched at l3?) torest upon and be positioned by an angle member l5 mounted on any suitable. support IS. The support It is also shown as carrying a duct or pipel'l suitably connected to supply water by the upwardly extending pipe l8 to the interior of the water supply tank I4. The angle member is notched. 7 Y

Extending downwardly from thetank 14 to the transverse member or members l2 are a plurality of troughs 20. Each such trough 20 may have, for'example, a rear'wall 20a, forwardly'projecting side walls 201), and inwardly extending front it is a top tank or duct shown as 2,527,450, issued October 24, 1950..

It will be understood that water in the tank, [4, supplied, for example, through the pipe 18, is effective to flow downwardly through the troughs 20. The troughs 20 have their open faces op;- posed to the inflow of steam from the pipes or tubes 3. The baffle structure 4 may have a supplemental baffie 4a. The inflowing steam is thereby directed downwardly toward or against the upper surface of the body of water 2. An intermediate bafile 40 may also be employed, as shown in Figure 1. The result is that after the steam has impinged upon the surface of the water 2 it then flows against and between the troughs 20 which constitute a washer assembly.

It will be noted, as'shown, for example, in Figure 3, that a plurality of troughs are arranged in staggered relation. As the steam passes against and between the troughs it impinges against the The troughs are so inclined that water gravitally flows down the rear surface 20a. The side walls 201) and the front walls 200 are effective to prevent the water from being blown away or dispersed by the impingement of the steam. Impurities in the steam are collectedand removed by the downwardly flowing water, and carried downwardly into the main-mass of the body of water 2.

The initially washed steam, after it has flowed through the above described washer assembly, indicated generally at A in Figure 3, enters the first or lower dryer assembly, generally indicated at B in Figure 3. As will-be clear from a comengaged for removal; For example, the side frame members [3 of the adjacent units inthe assembly A may be bolted to correspondingside frame members 24 of the dryer assembly B. The

dryerunits have bottom structural members'lii and top tanks 21.

front wall 210, and a rear wall 21d. .The front I 1 wall 2'lc may be secured, for example, to the top; guiding baffle or partition 28,;one-endor edge of which connects with-thehand-hole plate 29 Connecting the bottom plate 21a of each such. tank il and extending downwardly .to'i'and, through the'bottomstructural members 26,"ar" a" It will be'understood that the. tanks 21 have bottom walls 21a, top 'walls 211), a'

plurality of troughs 30 which may be generally similar in shape to the troughs 20 of the washer unit, but which may be advantageously somewhat narrower. They are preferably in the staggered relation in which they are shown in Figure 3. It will be understood that the impingement of steam against the troughs 30 results in a gathering of moisture which flows gravitally down the rear faces or walls 30a of the troughs 30, and is thereby delivered to the water 2.

As will be clear from Figure 1, -I provide an upper or second dryer, having a top structural member or members 3| from which extend downwardly a second group or tier of troughs 3 2. The lower ends of these troughs extend downwardly through the wall 27b and deliver their gathered moisture to the interior of the tank or receiver 27. This moisture is carried downwardly to the liquid 2 and through drain pipes 33. The dried steam then flows upwardly across the plate 28 for escape through the pipes or ducts 8. It will be understood that the troughs in the upper dryer unit face toward the flowing steam, the direction ofilow of the steam being indicated, for example, by arrows. in Figure 1.

It will be realized that, whereas, I have described and illustrated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I thereforewish my description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to my precise showing. It will be, understood, for'example, that, if desired, some of the delivery tubes 3 may reach the drum I at below the level of the water 2.

I claim:

1. A steam purifying assembly for boilers, including ahousing forming a purifying chamber and having a body of water disposed in the lower portion thereof, duct means for admitting steam to and for discharging steam from said housing, and a purifying unit disposed within said housing and in the line of flow of steam betweensaid respective duct means, said purifying unit including a steam washer having a pair of spaced, par e standin s p o t. plates hav g. low r ends positioned in said body of water and upper ends disposed adjacent the upper portion of said housing'and connected-to a relatively fixed por-,

tion of said, housing, a feedwater supply member betw nand c nn cte o he pp r por i o said plates, a supporting member extending between and connected to, the lower portions of said plates, arplurality of spaced parallel feedwater uide. m mbers. onne t d b tw en sa d. supply said sections including a plurality of feedwater uide members.

3. A steam purifying assembly as recited in claim 1 wherein said washer is formed with a plurality of vertically aligned sections, and said drier is formed with a plurality of vertically aligned sections corresponding to said washer sections and each washer section has supporting plates connected to corresponding supporting plates for a drier unit section.

4. A steam purifying assembly as recited in claim 1 wherein said washer structure and said drier structure, each include a plurality of rows of channel-shaped guide members, the individual channel-shaped members of each row being staggered with relation to one another.

5. The structure of claim 1 wherein an upper drier portion is located above the drier positioned adjacent the. Washer,..separating means between the two drier portions formed and adapted to constrain the steam from the washer to flow through the lower drier portion, said separating means including a tank adapted to receive liquid separated in the upper drier portion, and a drain pipe therefor extending downwardly through the lower 'drier portion.

6. Asteazn purifying attachment for a steam purifying housing having a purifying chamber and a body of water in the lower portion thereof and provided with steam inlets and steam exit ducts for permitting the flow of steam through said q chamber, including a steam washer unit having a pair of spacedsparallel generally elonmember andsupport member to. form with said,

suppor plates, support member and supply menfiher; a substantially rigid. structure, each guide member beingformed to convey feedwater from said member to said body or water, and a steam drier unit positioned closely. adjacent, to said fe'edwater guide members, said drier including a plurality of upstanding drying membersydisposed in said line offlow of steam downstream of the feedwater guide members, means for supporting said drier including upstanding end members connected to said upstanding supporting plates,

plurality of verticallyaligned sections, each of the;

gated supporting plates having lower portions thereof adapted to be disposed in said body of water and upper portions adapted to be positioned adjacent. and connected to an upper portion of said housin a plurality of steam washing members adapted to convey feedwater to said body of water,.said members being supported by generally horizontally extending members connected to the upper ends and to the lower ends of said plates, respectively, the member connected to.

the upper ends of said plates being formed and adapted to deliver feedwaterto said steam wash: ing members, a drier unit positioned adjacent to said washer unit and disposed rearwardly of said washer unit with respect to the flow of steam w'ithin said housing, said drier unit including a pair of spaced, parallel supporting plates having connections with the first-mentioned supporting plates, to form a substantially rigid structure therewith, whereby said attachment may be unitarily. removed from anclinserted in said housing.

7-. An attachment as recited in claim 6 where-.

in said washer is formed. with a plurality of vertically' alignedsections, and said drier is formed with ,a plurality of vertically aligned sections corresponding tofsaid washer sections and each washer section has supporting platesconnected to corresponding supporting plates for a drier unit section.

whereby saidlpurifying unit=may be unitarily' Number GUSTAV A. RE-HM.

Name Date 1,744,314 I Kirkpatrick Jan. 21, 1930 2,055,731' Angermuel1er Sept. 29, 1936 2,058,239 Kerr Oct. 20, 1936 "2,075,059 Rosencrants et al. Mar. 30, 1937 2,256.115- ;;H b b Sept. 16, 941," 12,424,212 Andrews'et, a1 1 July"22, 1947 33 7 24 9 ifi Chl. :1

Images