DE59708266D1 - Grid for a hot water heater - Google Patents

Grid for a hot water heater

Info

Publication number
DE59708266D1
DE59708266D1 DE59708266T DE59708266T DE59708266D1 DE 59708266 D1 DE59708266 D1 DE 59708266D1 DE 59708266 T DE59708266 T DE 59708266T DE 59708266 T DE59708266 T DE 59708266T DE 59708266 D1 DE59708266 D1 DE 59708266D1
Authority
DE
Germany
Prior art keywords
grid
hot water
water heater
degrees
cast iron
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
DE59708266T
Other languages
German (de)
Inventor
Dr Biegus
Kurt Braun
Prof Dr Buehler
Dr Krone
Prof Dr Bleck
Jobst Brand
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.)
Paul Wurth Deutschland GmbH
Original Assignee
Didier M&P Energietechnik GmbH
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 Didier M&P Energietechnik GmbH filed Critical Didier M&P Energietechnik GmbH
Application granted granted Critical
Publication of DE59708266D1 publication Critical patent/DE59708266D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • C22C37/08—Cast-iron alloys containing chromium with nickel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F27D2017/007—Systems for reclaiming waste heat including regenerators

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Resistance Heating (AREA)
  • Heat Treatment Of Steel (AREA)
  • Mold Materials And Core Materials (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

A grating for a blast reheater consists of a cast iron material which exhibits linear expansion properties and no significant structure changes in the 20-600 degrees C range. The iron has a strength (DIN 1691) of more than 240 MPa at 600 degrees C and exhibits toughness with a strain rate of more than 10%. The cast iron may have (i) a bainite-free structure with vermicular graphite; or (ii) a pearlitic-ledeburitic structure with lamellar graphite and containing 0.6-1.0 wt.% Cr, 0.8-1.5 wt.% Ni and 0.4-0.7 wt.% Mo, the total content of Cr, Ni and Mo being 1.8-3.2 wt.%.
DE59708266T 1997-07-18 1997-07-18 Grid for a hot water heater Expired - Lifetime DE59708266D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97112351A EP0892078B1 (en) 1997-07-18 1997-07-18 Grating for a recuperator

Publications (1)

Publication Number Publication Date
DE59708266D1 true DE59708266D1 (en) 2002-10-24

Family

ID=8227086

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59708266T Expired - Lifetime DE59708266D1 (en) 1997-07-18 1997-07-18 Grid for a hot water heater

Country Status (3)

Country Link
EP (1) EP0892078B1 (en)
AT (1) ATE224463T1 (en)
DE (1) DE59708266D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1846581A2 (en) * 2005-02-01 2007-10-24 Danieli Corus BV Support assembly for supporting heat regeneration checker work in a hot blast stove, hot blast stove provided with said support assembly, method of producing hot air using said hot blast stove
CN109023025B (en) * 2018-08-20 2019-11-29 江苏力源金河铸造有限公司 A kind of preparation method with high-elongation vermicular cast iron

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461822A (en) * 1973-03-19 1977-01-19 Didier Werke Ag Checkerwork-supporting grate for blast furnace stoves
US4176656A (en) * 1978-04-10 1979-12-04 Komorowski Alexander F Nitrogen-heat separator furnace
DE3706516C2 (en) * 1987-02-28 1996-05-23 Kuepper August Gmbh & Co Kg Titanium- and aluminum-containing cast iron alloy for the production of highly stressed engine parts
DE3841708C1 (en) * 1988-12-10 1989-12-28 Kloeckner Cra Patent Gmbh, 4100 Duisburg, De
FR2681878B1 (en) * 1991-09-26 1993-12-31 Centre Tech Ind Fonderie HEAT RESISTANT SPHEROUIDAL GRAPHITE CAST IRON.

Also Published As

Publication number Publication date
EP0892078A1 (en) 1999-01-20
ATE224463T1 (en) 2002-10-15
EP0892078B1 (en) 2002-09-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PAUL WURTH REFRACTORY & ENGINEERING GMBH, 55252 MA