GB956474A - Improvements in vapour generating and heating units - Google Patents

Improvements in vapour generating and heating units

Info

Publication number
GB956474A
GB956474A GB2401/61A GB240161A GB956474A GB 956474 A GB956474 A GB 956474A GB 2401/61 A GB2401/61 A GB 2401/61A GB 240161 A GB240161 A GB 240161A GB 956474 A GB956474 A GB 956474A
Authority
GB
United Kingdom
Prior art keywords
tubes
duct
furnace chamber
superheater
downpass
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
Application number
GB2401/61A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of GB956474A publication Critical patent/GB956474A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/06—Controlling superheat temperature by recirculating flue gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/34—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
    • F22B21/341—Vertical radiation boilers with combustion in the lower part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/002—Control by recirculating flue gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
    • F22B37/147—Tube arrangements for cooling orifices, doors and burners
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1457—Metal bands
    • Y10T24/1459—Separate connections
    • Y10T24/1461—One piece
    • Y10T24/1463—Sheet metal
    • Y10T24/1469—End-to-end integral with band connecting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

956,474. Regulating steam temperature in boilers; recirculating combustion gases. BABCOCK & WILCOX CO. Jan. 20, 1961 [Jan. 25, 1960], No. 2401/61. Headings F4A and F4B. In a high capacity high pressure and temperature natural circulation boiler including upright vapour generating wall tubes 18, 22, 27 lining a furnace chamber 12A, 12B, 12C low temperature gases, e.g. to control slanging and regulate steam temperature, are introduced into the radiation section 12A of the furnace chamber through a duct 52 the front face of which is defined by water-cooled rear wall tubes 22 which, at places, are displaced outwardly and laterally within the duct 52 to form low pressure drop outlet passages 56A, 56B and provide a shield which protects the inner face of the duct against radiation. Groups of adjacent tube parts 22A-22H are located, at spaced intervals, longitudinally of the duct 52 and as shown in Figs. 2, 3 the tubes of each group comprise tube sets 22A-22D and 22E- 22H which fan outwardly in a curve from opposite sides of a centre port 56 baffles 59, e.g. closely spaced flat studs 60 welded to the tubes and appropriately shaped plates, closing the spaces 58 between the tubes 22A-22H to form the streamlined outlet passages 56A, 56B. A retractable soot blower 61 is located at each port 56 the groups of which may be located at any desired position in the furnace chamber walls. The low temperature gases are withdrawn from a down pass 14 through a duct 49 leading to a blower 50 which discharges into the duct 52. Superheater tubes, lining the roof and walls of the downpass, are connected to a primary superheater 39 arranged upstream, gaswise, of an economiser 46 in the downpass 14 and connected to a secondary superheater 43 arranged in a horizontal pass 13 in front of a reheater bank 70. Cyclone furnaces 20, 20A, arranged at different levels and having their barrel portions defined by steam generating tubes, discharge into the section 12B of the furnace chamber. Other burners may be used for firing the unit. Specification 552,747 is referred to.
GB2401/61A 1960-01-25 1961-01-20 Improvements in vapour generating and heating units Expired GB956474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4491A US3060903A (en) 1960-01-25 1960-01-25 Vapor generator

Publications (1)

Publication Number Publication Date
GB956474A true GB956474A (en) 1964-04-29

Family

ID=21711057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2401/61A Expired GB956474A (en) 1960-01-25 1961-01-20 Improvements in vapour generating and heating units

Country Status (2)

Country Link
US (1) US3060903A (en)
GB (1) GB956474A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5390631A (en) * 1994-05-25 1995-02-21 The Babcock & Wilcox Company Use of single-lead and multi-lead ribbed tubing for sliding pressure once-through boilers
US5791300A (en) * 1996-02-13 1998-08-11 The Babcock & Wilcox Company Steam generator parallel back end using pendant primary superheater and baffle wall with gas-tight header vestibule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1080188A (en) * 1954-12-07
US2306156A (en) * 1939-02-22 1942-12-22 Cermak Josef Slag outflow openings for furnaces
US2242491A (en) * 1939-06-05 1941-05-20 Comb Eng Co Inc Slagging furnace
FR1111328A (en) * 1953-09-25 1956-02-24 Babcock & Wilcox France Evaporation and superheating unit with gas recirculation
US2832321A (en) * 1955-03-24 1958-04-29 Babcock & Wilcox Co Cyclone furnace fired fluid heating unit
US2856907A (en) * 1955-11-30 1958-10-21 Babcock & Wilcox Co Steam generating, superheating and reheating unit with reheater ahead of the superheater

Also Published As

Publication number Publication date
US3060903A (en) 1962-10-30

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