US1738641A - Method and apparatus for removing vapors - Google Patents

Method and apparatus for removing vapors Download PDF

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Publication number
US1738641A
US1738641A US180903A US18090327A US1738641A US 1738641 A US1738641 A US 1738641A US 180903 A US180903 A US 180903A US 18090327 A US18090327 A US 18090327A US 1738641 A US1738641 A US 1738641A
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US
United States
Prior art keywords
air
housing
pipe
vapor
moisture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US180903A
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English (en)
Inventor
Henry W Cowan
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Individual
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Individual
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Publication date
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Publication of US1738641A publication Critical patent/US1738641A/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/46—Spray booths

Definitions

  • Thisinvention relates to vapor .removing means adapted particularly for use with drying apparatus such as used in connection with the manufacture of paper.
  • drying apparatus such as used in connection with the manufacture of paper.
  • the paper after leaving the making screen is led between drying rolls. These drying rolls are hollow and are heated internally by steam. In some cases, also, the paper may be led over suitable rolls in close proximity to heated coils.
  • the heat from the drying rolls or coils converts the moisture in the paper into the form of vapor, and various arrangementsv have beentried to get rid of this vapor.
  • My object therefore is to devise means for getting rid of this vapor without allowing it to pass into the room in which the drying apparatus is 'located and at the same time 3o to enable me to use air for maintaining the moisture in the vaporized form of a much higher temperature than formerly while maintaining the temperature of the room as a whole at a comfortable degree and to utilize said hot air in such a manner that no cross currents will be created tending to hinder the travel of the moisture laden air from the drying rolls.
  • a further object is to provide means for removing the moisture from the air whereby the air may be again circulated, thus avoiding the necessity of always using the cold outside air, which naturally is more expensive ⁇ to heat up than the previously heated air which may not have been fully saturated during the previous circulation and which is only partially cooled during the process of removing the moisture therefrom.
  • FIG. 1 is a more or-less diagrammatic view, partly in section, illustrating the apparatus for carryingout my invention
  • Fig. 2 a longitudinal section of the casing for thel drying rolls on the line 2-2 inj Fig. 1; v
  • Fig. 3 a similar view ⁇ on the line 3 3 in Fig. 1;
  • Fig. 4 is a view similar to Fig. l showing my invention as used in connectoin with the removal of vapor rising from dye kettles.
  • 1 indicates a suitable supporting frame in which are journalledthe rolls 2 of themachine over .which the-paper is led during the drying operation.
  • these rolls may be steam heated as is common in the vartor heating coils may be positioned in close proximity thereto.
  • the frame with its rolls is enclosed in a housing 3 located in aroom, the latterA being indicated by the Wall 30.
  • This housing is open at one side and is provided with a slot in each end for the passage of the-paper to and from the drying rolls.
  • a hot air supply duct 5 At thetop of thehousing at its open side is formed a hot air supply duct 5.
  • a-hot air supply pipe 6 To one end of this duct is connected one end of a-hot air supply pipe 6, the other end of which is connected withan air heater 14.
  • the duct is provided with a plurality of outlets 7 in its side throughout its'length and for the purpose of equalizing the discharge through each outlet, the duct is preferably tapered from end to end, the end of the sup-' ply pipe 6 being connected with the end of the duct having the greatest capacity.
  • a collecting duct 8 At the opposite or closed side o the housf ing 3 adjacent the top thereof is provided a collecting duct 8 having inlet openings 9 of the inlet openings 9 is, for a purpose which will hereinafter appear, greater than the total effective area of the outlets 7 of the hot air supply duct.
  • the collecting duct 8 has within it a series of longitudinal gutters 11, one below each row of inlet openings 9, and along these gutters are laid cold water pipes 12 perforated in a suitable manner to direct sprays of cold water, the water being collected in the gutters and led off through a discharge pipe 13 for re-use.
  • the suction pipe 10 preferably leads to a mixing chamber 15 to which mixing ⁇ chamber is also connected a pipe 16 through which fresh cool air may enter. From the mixing chamber leads a pipe 17 which leads to a suction fan 18, which fan discharges a pipe 19, which leads to a branched pipe 14, one branch leading both to the heater and the other branch to the atmosphere.
  • the mixing chamber 15 is preferably provided with baelles 20 to ⁇ cause the air to take a circu'itous course therein and from the mixing chamber leads a waste pipe 21.
  • I may employ a fan 22 in the branch of the pipe 19 leading to the atmosphere for the purpose of assisting the exhausting of air through said pipe.
  • damper 23 in the pipe 19 I preferably provide a damper 23 while in the cold air inlet pipe 16 is also provided a damper 24.
  • dampers 23 and 24 are preferably connected by means pf a link 25 so that they will be actuated simultaneously and thus the incoming of air through the pipe 16 will be proportional to the exhaust of air through the branch of the p ipe 19 which leads to the outside air.
  • the method of operation is as follows: Heated ,airl from the heater 14 is led through the pipe 6 to the duct 5 from which it is discharged through the openings 7 into the upper part of the housing 3.
  • the hot air naturally tends to remain near the top of the housing and as the inlets 9 of the collecting duct 8 are also near the top of the housing, the natural ow of the hot air is directly across the upper part of the housing from the duct 5 to the collecting duct 8.
  • One of the most important features of my invention is, however, my arrangement whereby more air is withdrawn through the" duct 8 than is discharged through the duct 5. This extra.
  • Fig. 4 I illustrate a lay-out for use in connection with dyeing apparatus. 22a in'di ⁇ ⁇ cates a dye kettle into which the material bein;r dyed is dipped. The kettle is enclosed in a housing 23 having ailar'ge opening 2 4 for the entrance of air from the room. lTo
  • the top of the housing is connected a conduit 25a which leads to a condenser 26, which contains a water spraying device for c ondensing the vapors.
  • a condenser 26 which contains a water spraying device for c ondensing the vapors.
  • an outlet'27 for the water and condensate which outlet is led to a tank 28.
  • the suction pipe which leads to the a portion of the air to the atmosphere.
  • FIGf4 I show the pipe 10 leading vset out in the preamble of the the former is provided with a damper 24 and the latter with a damper 23.
  • the discharging of a portion of the air from the fan 19 to the atmosphere through the branch 29, is very important, as in this way the desired result of forcing less air into the housing than is withdrawn therefrom is obtained.
  • the amount of air discharged through the pipe 29 must, of course, be greater than'the amount of fresh air admitted through the ack to the housing 23, butin the case ofa dyeing plant, for example, where highly heated air is not essential, the dotted portion of the pipe 10 my be omitted so that the pipe discharges into the room sothat all air enteringr the house enters through the opening 24a.
  • the yprocess of removing vapor arising lfrom heated material containing moisture which, consists in enclosing said material in a housing located in a room inwhich the operators work, said housing having an openz ing through which air'fromth'e exterior of the housing may enter the latter, constantly supplying hot air to said housing at an elevation.
  • a housing for heating said material,l said housing having an opening in its lower portion substantially equal'in length to said heating means, means for constantly supplyingl hot air to saidhousing at an elevation entirely above the heating means, and means for constantly withdrawing air from the upper portion of saidhousing at a rate sulicient to reduce the pressure therein, andthus maintain a flow of air through said opening to the interiorA of the housing, whereby the escape of vapors from the housing through said opening is prevented'.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
US180903A 1926-10-29 1927-04-04 Method and apparatus for removing vapors Expired - Lifetime US1738641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA279816X 1926-10-29

Publications (1)

Publication Number Publication Date
US1738641A true US1738641A (en) 1929-12-10

Family

ID=4171347

Family Applications (1)

Application Number Title Priority Date Filing Date
US180903A Expired - Lifetime US1738641A (en) 1926-10-29 1927-04-04 Method and apparatus for removing vapors

Country Status (4)

Country Link
US (1) US1738641A (de)
DE (1) DE545386C (de)
FR (1) FR642528A (de)
GB (1) GB279816A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467505A (en) * 1944-09-25 1949-04-19 American Machine & Metals Fume exhaust system
US2544769A (en) * 1945-12-29 1951-03-13 Scovill Manufacturing Co Fume and vapor control for cleansing tanks
US2590295A (en) * 1948-01-23 1952-03-25 Avco Mfg Corp Clothes drier
US2614336A (en) * 1949-09-24 1952-10-21 Carrier Corp Ventilation system for boarding machines
US2637660A (en) * 1945-12-20 1953-05-05 Koppers Co Inc Process of coating
US2836901A (en) * 1954-05-26 1958-06-03 Link Belt Co Method for drying metal scrap
US2929153A (en) * 1955-11-29 1960-03-22 American Viscose Corp Drying apparatus for sheet material
US4137646A (en) * 1976-06-15 1979-02-06 Bowe Bohler & Weber Kg Drum-type drier for fabric

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467505A (en) * 1944-09-25 1949-04-19 American Machine & Metals Fume exhaust system
US2637660A (en) * 1945-12-20 1953-05-05 Koppers Co Inc Process of coating
US2544769A (en) * 1945-12-29 1951-03-13 Scovill Manufacturing Co Fume and vapor control for cleansing tanks
US2590295A (en) * 1948-01-23 1952-03-25 Avco Mfg Corp Clothes drier
US2614336A (en) * 1949-09-24 1952-10-21 Carrier Corp Ventilation system for boarding machines
US2836901A (en) * 1954-05-26 1958-06-03 Link Belt Co Method for drying metal scrap
US2929153A (en) * 1955-11-29 1960-03-22 American Viscose Corp Drying apparatus for sheet material
US4137646A (en) * 1976-06-15 1979-02-06 Bowe Bohler & Weber Kg Drum-type drier for fabric

Also Published As

Publication number Publication date
FR642528A (fr) 1928-08-30
GB279816A (en) 1929-01-03
DE545386C (de) 1932-03-02

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