GB781909A - Improvements in tubulous vapour generating and superheating units and a method of controlling the temperature of superheat in such units - Google Patents

Improvements in tubulous vapour generating and superheating units and a method of controlling the temperature of superheat in such units

Info

Publication number
GB781909A
GB781909A GB11596/55A GB1159655A GB781909A GB 781909 A GB781909 A GB 781909A GB 11596/55 A GB11596/55 A GB 11596/55A GB 1159655 A GB1159655 A GB 1159655A GB 781909 A GB781909 A GB 781909A
Authority
GB
United Kingdom
Prior art keywords
burners
furnace
gas
side walls
steam
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
GB11596/55A
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 International Ltd
Original Assignee
Babcock and Wilcox Ltd
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 Ltd filed Critical Babcock and Wilcox Ltd
Publication of GB781909A publication Critical patent/GB781909A/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
    • F22B21/343—Vertical radiation boilers with combustion in the lower part the vertical radiation combustion chamber being connected at its upper part to a sidewards convection chamber
    • F22B21/345—Vertical radiation boilers with combustion in the lower part the vertical radiation combustion chamber being connected at its upper part to a sidewards convection chamber with a tube bundle between an upper and a lower drum in the convection pass

Landscapes

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

Abstract

781,909. Combustion apparatus. BABCOCK & WILCOX, Ltd. April 21, 1955 [April 23, 1954], No. 11596/55. Class 51 (1). [Also in [Group XIII] A water-tube boiler has a furnace 10 lined with steam-generating tubes and fired from the front wall 12 by a single horizontal row of four whirling flame pulverized coal, oil or gas burners, hot gases leaving the upper part of the furnace laterally to flow over a superheater 36 and sinuously through the boiler convection section between baffles 104 ... 106 to a breaching 130 conveying the gases to an air heater 132. Steam flows from the drum 20 through the superheater 36 to an outlet header 126. Alternatively the steam may flow from the header 126 through two parallel-connected radiant superheated sections respectively disposed on the furnace side walls. Cool flue gas is extracted from breaching 130 by a fan 37 which directs it into the throat 32 of the furnace hopper bottom, the quantity of gas recirculated being controlled by a damper 44 actuated by a power device 52 in response to variations in superheat temperature. To prevent unbalance in furnace side wall heating, the burners adjacent the side walls are arranged to provide flames which whirl in opposite directions. As shown in Fig. 3, the burners are divided into two groups A and B, the burners 60, 62 of group A having their secondary air vanes 68, 70 set to provide clockwise rotation of the air stream about the air-borne coal stream from the burner nozzles whilst the burners 64, 66 of group B have their air vanes 76, 82 set to cause an anticlockwise rotation. By having the burners 60, 66 arranged to deliver flames of opposite rotations. a more uniform and equalized. flow of recirculated gas along the side walls 16, 18 is obtained. Moreover, the concentration of recirculated gas on the side walls screens the generating or superheating tubes thereof from radiant heat and renders the flow regulation of recirculated gas more effective in controlling steam temperature. Specification 781,910, [Group XIII], is referred to.
GB11596/55A 1954-04-23 1955-04-21 Improvements in tubulous vapour generating and superheating units and a method of controlling the temperature of superheat in such units Expired GB781909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US781909XA 1954-04-23 1954-04-23

Publications (1)

Publication Number Publication Date
GB781909A true GB781909A (en) 1957-08-28

Family

ID=22142503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11596/55A Expired GB781909A (en) 1954-04-23 1955-04-21 Improvements in tubulous vapour generating and superheating units and a method of controlling the temperature of superheat in such units

Country Status (1)

Country Link
GB (1) GB781909A (en)

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