GB988353A - Improvements in or relating to air heaters, particularly for vapour generator furnaces - Google Patents

Improvements in or relating to air heaters, particularly for vapour generator furnaces

Info

Publication number
GB988353A
GB988353A GB12649/64A GB1264964A GB988353A GB 988353 A GB988353 A GB 988353A GB 12649/64 A GB12649/64 A GB 12649/64A GB 1264964 A GB1264964 A GB 1264964A GB 988353 A GB988353 A GB 988353A
Authority
GB
United Kingdom
Prior art keywords
air
section
flow
heater
tubes
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
GB12649/64A
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 GB988353A publication Critical patent/GB988353A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • 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
    • Y10S165/00—Heat exchange
    • Y10S165/921—Dew point

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)
  • Air Supply (AREA)

Abstract

988,353. Air heaters. BABCOCK & WILCOX CO. March 25, 1964 [March 29, 1963], No. 12649/64. Heading F4S. In an air heater for the combustion air of a steam generator wherein the air passes serially through three sections of the heater, cold-end corrosion is prevented by passing a minor proportion of hot flue gas directly to the end section of the heater adjacent the air inlet and then combining the gas flow from this section with the main flow of flue gas passed through the section of the heater adjacent the air outlet for flow through the intermediate section. A steam generator furnace 10 is fired by cyclone furnaces 24, the combustion gases flowing through a lateral pass 17 and downpass 19 containing a primary superheater 30 and economizer 31 to an outlet 34 whence they flow through the metal tubes 41C of an air heater section 52 into an ash hopper 55. Flue gases at a higher temperature drawn from a gap 32 between the primary superheater and economizer flow through a duct 77 to the inlets of tubes 41A of a section 50 of the air heater adjacent the air inlet and discharge therefrom into the hopper 55. The two flows mix in the hopper and flow upwardly through the tubes 41B of the intermediate section 51 of the air heater to a dust collector 81. Combustion air is driven by a fan 44 through the sections 50 ... 52 to the windbox 48 of the cyclone furnaces. The by-pass duct 77 is dimensioned or provided with dampers so that about 10% of the total flue gas flow enters the section 50. By passing this hot gas through the tubes 41A nearest the cold air inlet cold-end corrosion is substantially eliminated. Specification 771,924 is referred to.
GB12649/64A 1963-03-29 1964-03-25 Improvements in or relating to air heaters, particularly for vapour generator furnaces Expired GB988353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US268985A US3194214A (en) 1963-03-29 1963-03-29 Air heater having by-pass to prevent cold-end corrosion

Publications (1)

Publication Number Publication Date
GB988353A true GB988353A (en) 1965-04-07

Family

ID=23025360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12649/64A Expired GB988353A (en) 1963-03-29 1964-03-25 Improvements in or relating to air heaters, particularly for vapour generator furnaces

Country Status (2)

Country Link
US (1) US3194214A (en)
GB (1) GB988353A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1135935A (en) * 1965-12-08 1968-12-11 Humphreys & Glasgow Ltd Process and apparatus for the recovery of waste heat
US4205630A (en) * 1978-11-15 1980-06-03 Combustion Engineering, Inc. Steam air preheater for maintaining the flue gas temperature entering dust collection equipment
US4305455A (en) * 1979-02-28 1981-12-15 Lipets Adolf U Multipass corrosion proof air heater
US4243096A (en) * 1979-04-09 1981-01-06 Lipets Adolf U Multipass corrosion-proof air heater
US4470449A (en) * 1982-04-02 1984-09-11 Monsanto Company Economizer arrangement
US4478809A (en) * 1983-01-20 1984-10-23 Monsanto Company Economizer arrangement
US4576226A (en) * 1983-04-18 1986-03-18 Lipets Adolf U Multipass corrosion-proof air preheater
US4930571A (en) * 1985-05-08 1990-06-05 Industrial Energy Corporation Heat recovery apparatus
US4928749A (en) * 1985-05-08 1990-05-29 Industrial Energy Corporation Heat exchange recovery method
US4926840A (en) * 1989-09-28 1990-05-22 Rheem Manufacturing Company Pilot gas bypass system for fuel-fired furnaces
US4974579A (en) * 1989-09-28 1990-12-04 Rheem Manufacturing Company Induced draft, fuel-fired furnace apparatus having an improved, high efficiency heat exchanger
US5293860A (en) * 1992-09-04 1994-03-15 Inter-City Products Corporation (Usa) Standing pilot furnace with vented vestibule
USRE37128E1 (en) * 1992-09-04 2001-04-10 International Comfort Products Corporation (Usa) Standing pilot furnace with vented vestibule
CN102230636B (en) * 2011-03-29 2015-09-30 宝钢工业炉工程技术有限公司 The low-temperature protection device of preheater metallic heat exchanging tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1914604A (en) * 1930-01-24 1933-06-20 Foster Wheeler Corp Air preheater
US2386188A (en) * 1942-03-04 1945-10-09 Foster Wheeler Corp Heat exchange apparatus
US2744733A (en) * 1952-05-29 1956-05-08 Foster Wheeler Corp Heat exchange apparatus
US2947522A (en) * 1955-05-12 1960-08-02 Keller John Donald Recuperators
US3007681A (en) * 1957-10-04 1961-11-07 John D Keller Recuperators

Also Published As

Publication number Publication date
US3194214A (en) 1965-07-13

Similar Documents

Publication Publication Date Title
GB988353A (en) Improvements in or relating to air heaters, particularly for vapour generator furnaces
US2511647A (en) Combustion air heater for furnaces arranged to minimize corrosion by flue gases
US4465021A (en) Steam generator with a main boiler and a fluidized bed furnace
GB998317A (en) Steam generating unit
US1789401A (en) Air heater
US3283801A (en) Steam generating unit
GB988327A (en) Improvements in pulverized-fuel firing arrangements for furnaces
GB530792A (en) Improvements in or relating to air heaters
US2832571A (en) Fluid heating apparatus
US2989039A (en) Fluid heating unit with gas tempering provisions
US1792104A (en) Pulverized-coal-burning boiler furnace
US3227141A (en) Waste heat recovery systems
US3171390A (en) Steam generating unit
US3095863A (en) Steam generating unit
GB726244A (en) Improvements in tubulous vapour generating and vapour heating units and the operation thereof
GB911870A (en) Improvements in independently fired tubulous vapour heaters
GB762902A (en) Forced flow, once-through, tubulous vapour generators and methods of operation thereof
US2840056A (en) Stoker fired steam generating unit with double convection section
GB834784A (en) Improvements in power plants with vapour-operated prime movers and gas turbines
SU428158A1 (en) BOILER AIR
GB735034A (en) Improvements in or relating to steam generating and superheating installations
GB1042702A (en) Improvements in steam generators
GB598142A (en) Improved combustion apparatus for burning solid fuels containing ash
GB802032A (en) A steam generator and method of operating the same
US2639695A (en) Vapor generator