US20030024449A1 - Grate furnace - Google Patents

Grate furnace Download PDF

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Publication number
US20030024449A1
US20030024449A1 US10/210,156 US21015602A US2003024449A1 US 20030024449 A1 US20030024449 A1 US 20030024449A1 US 21015602 A US21015602 A US 21015602A US 2003024449 A1 US2003024449 A1 US 2003024449A1
Authority
US
United States
Prior art keywords
grate
furnace
steps
housing
case
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.)
Abandoned
Application number
US10/210,156
Other languages
English (en)
Inventor
Johannes Martin
Peter Weber
Werner Familler
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.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7693881&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20030024449(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Assigned to MARTIN GMBH FUR UMWELT- UND ENERGIETECHNIK reassignment MARTIN GMBH FUR UMWELT- UND ENERGIETECHNIK ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEBER, PETER, FAMILLER, WERNER, MARTIN, JOHANNES
Publication of US20030024449A1 publication Critical patent/US20030024449A1/en
Priority to US10/714,081 priority Critical patent/US6938563B2/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates

Definitions

  • the invention relates to a grate furnace with a grate consisting of grate steps composed [lacuna] grate elements lying next to one another, of which grate steps in each case every second grate step in the longitudinal direction of the grate can be driven for carrying out stoking movements and the grate steps in each case lying therebetween are stationary, the drive devices for the movable grate steps being arranged under the grate.
  • this object is achieved in a grate furnace of the type described in the introduction by virtue of the fact that the drive devices are arranged under the grate, protected by housings.
  • the drive devices are protected against everything which may enter the underblast chamber from above through the grate.
  • a separate housing chamber which makes possible assembly or exchange of the drive device during continuous operation, is provided for each drive device.
  • each housing is thermally insulated. This proves to be advantageous especially when the primary air sweeping past the housing in the underblast chamber is very greatly preheated. In order further to increase the effect achieved by the thermal insulation, forced ventilation can be provided for each housing in a development of the invention.
  • the housing chamber is of streamlined design in the flow direction of the primary air supplied for the grate furnace in at least one underblast chamber.
  • one drive device can in principle be provided for one or more grate steps to be moved, it has been found to be advantageous if a drive device is in each case assigned to two movable grate steps. A stationary grate step is then located between these two movable grate steps, in which way the smallest controllable grate unit is created.
  • each drive device comprises at least one hydraulic cylinder/piston unit, the piston rod of which is connected to a push rod which is guided in a sealed manner through the housing wall and engages on a carriage, to which at least one grate step to be moved is connected.
  • the use of a push rod between a carriage guided on guides and the piston rod of the drive cylinder has the advantage that the particularly finely machined surface of the piston rod always remains in the protective housing, so that there is no risk of the seal of the working cylinder being damaged by impairment of the piston rod. Damage to the seal on the housing, which may occur as a result of deposits on the push rod, do not then have any serious consequences as may occur in the event of damage to the seal of the working cylinder.
  • FIG. 1 shows a longitudinal section through a grate furnace
  • FIG. 2 shows a section along the line II-II in FIG. 1, and
  • FIG. 3 shows a part section along the line III-III in FIG. 1.
  • a grate furnace according to FIG. 1 comprises a charging hopper 1 , a charging device 3 which can move to and fro over a charging table 2 , a grate 4 , a collecting device 5 arranged at the end of the grate for collecting the ash, and an ash chute 6 into which the burnt ash falls.
  • underblast chambers 7 . 1 , 7 . 2 , 7 . 3 and 7 . 4 Situated under the grate 4 are four mutually separate underblast chambers 7 . 1 , 7 . 2 , 7 . 3 and 7 . 4 . These underblast chambers each have connections 8 . 1 to 8 . 4 for the separate supply of primary air, which is blown toward the grate 4 from the underside and through the grate into the fuel lying on the grate, for example refuse.
  • the underblast chambers are arranged in a stepped staggered manner in relation to one another following the inclined grate.
  • a carriage 9 . 1 to 9 . 4 Arranged above-each underblast chamber is a carriage 9 . 1 to 9 . 4 which, as can be seen in connection with FIG. 3 in particular, is in each case provided with two roller pairs 10 and 11 which are guided in guide tracks 12 .
  • drivers 13 and 14 Arranged on each carriage are drivers 13 and 14 , each of which is in engagement with a movable grate step 15 and, respectively, 16 .
  • the furnace grate is composed of in each case alternately movable and stationary grate steps, a stationary grate step 17 being provided in each case between two movable grate steps 15 and 16 .
  • a carriage 9 is therefore provided for the motive drive of two movable grate steps.
  • the guide tracks 12 are aligned parallel to the movement direction of the movable grate steps 15 and 16 .
  • a drive device designated as a whole by reference number 18 which comprises a working cylinder 19 , a piston (not shown in the drawing) which is movable in the working cylinder, and a piston rod 20 , serves for displacing each carriage 9 and the grate steps 15 and 16 connected thereto.
  • the working cylinder 19 is fastened to a transverse beam 22 by means of an articulation arrangement 21 , while the piston rod 20 is connected via an articulation 23 to a push rod 24 which extends through a seal 35 of a housing to be described below.
  • Each drive device with the exception of the drive device 18 . 4 which serves for the drive of the last two movable grate steps just before the ash chute, are [sic] arranged in a housing 25 which is continuous in the illustrative embodiment and is divided into housing chambers which are designated by reference numbers 25 . 2 to 25 . 4 below.
  • These housing chambers 25 which can be seen from FIGS. 2 and 3 in particular, surround the drive devices 18 . 1 , 18 . 2 and 18 . 3 in a protective manner.
  • the drive arrangement 18 . 4 is situated under a feed hopper 26 for the ash chute 6 and is consequently located outside the grate region, for which reason a housing chamber is not provided for this drive.
  • the grate furnace illustrated in the drawing has two grate paths next to one another, which are designated by reference numbers 4 a and 4 b .
  • the grate paths concerned are situated between lateral pressing plates 27 which are loaded by spring arrangements 28 in order to be capable of compensating lateral thermal expansion of the grate paths.
  • the housing chambers 25 for accommodating the drive devices 18 have thermal insulation 29 and forced ventilation, the corresponding ducts for the forced ventilation not being shown in the drawing. Flaps 31 articulated by means of an articulation 30 make possible assembly and maintenance of the drive devices 18 .
  • the housings 25 concerned are of streamlined design and configured and arranged in such a manner that an essentially constant flow cross section 32 remains in each case between the inner wall 33 of an underblast chamber 7 and the outer wall 34 of the housing 25 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Cereal-Derived Products (AREA)
  • Baking, Grill, Roasting (AREA)
  • Tunnel Furnaces (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Resistance Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Cleaning In General (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Toys (AREA)
US10/210,156 2001-08-01 2002-08-01 Grate furnace Abandoned US20030024449A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/714,081 US6938563B2 (en) 2001-08-01 2003-11-14 Grate furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10137520A DE10137520B4 (de) 2001-08-01 2001-08-01 Rostfeuerung
DE10137520.4 2001-08-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/714,081 Continuation-In-Part US6938563B2 (en) 2001-08-01 2003-11-14 Grate furnace

Publications (1)

Publication Number Publication Date
US20030024449A1 true US20030024449A1 (en) 2003-02-06

Family

ID=7693881

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/210,156 Abandoned US20030024449A1 (en) 2001-08-01 2002-08-01 Grate furnace

Country Status (16)

Country Link
US (1) US20030024449A1 (no)
EP (1) EP1281913B1 (no)
JP (1) JP3831311B2 (no)
AT (1) ATE399962T1 (no)
BR (1) BR0203032B1 (no)
CA (1) CA2396294C (no)
CZ (1) CZ302839B6 (no)
DE (2) DE10137520B4 (no)
DK (1) DK1281913T3 (no)
ES (1) ES2190909T3 (no)
NO (1) NO324288B1 (no)
PL (1) PL198741B1 (no)
PT (1) PT1281913E (no)
RU (1) RU2226650C1 (no)
SG (1) SG98065A1 (no)
TW (1) TWI220448B (no)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150027355A1 (en) * 2011-10-21 2015-01-29 Martin Gmbh Fuer Umwelt- Und Energietechnik Grate step module for a thrust combustion grate
US10099937B2 (en) 2014-02-13 2018-10-16 Siemens Aktiengesellschaft Conversion of metal carbonate to metal chloride
US10280090B2 (en) 2014-02-13 2019-05-07 Siemens Aktiengesellschaft Conversion of metal carbonate into metal chloride
CN111076163A (zh) * 2019-12-30 2020-04-28 河南农业大学 一种往复炉排秸秆捆烧锅炉

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH703509B1 (de) * 2010-07-30 2014-08-29 Doikos Investments Ltd Wassergekühlter Schub-Verbrennungsrost mit einem hydraulischen Antrieb für seine beweglichen Rostplatten.
CN102865581B (zh) * 2012-09-29 2015-06-24 吕庆忠 一种炉排式生活垃圾焚烧炉的机械炉排的同步驱动装置
RU2611079C2 (ru) * 2015-08-03 2017-02-21 Станислав Анатольевич Прохоров Твердотопливный котел
CN105543473B (zh) * 2015-12-28 2017-05-17 中冶北方（大连）工程技术有限公司 带有故障监测的链篦机复位装置
CN109899777A (zh) * 2019-03-22 2019-06-18 杭州良辰电子商务有限公司 一种锅炉

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111134A (en) * 1976-10-22 1978-09-05 Morse Boulger, Inc. Bearing assembly for a stoker carriage
CH637198A5 (de) * 1979-03-14 1983-07-15 Widmer & Ernst Ag Feuerungsrost fuer verbrennungsoefen.
FI85420C (fi) * 1987-12-22 1992-04-10 Ahlstroem Oy Anordning vid snedrost i foerbraenningsugns eldstad.
DE4105328C1 (no) * 1991-02-18 1992-11-19 Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De
US5528992A (en) * 1993-06-07 1996-06-25 Wheelabrator Environmental Systems, Inc. Reciprocating combustion grate guide system
CH688840A5 (de) * 1994-11-17 1998-04-15 Von Roll Umwelttechnik Ag Kühlbarer Rostblock.
NO312644B1 (no) * 1997-04-23 2002-06-10 Doikos Investments Ltd Vannkjölt trykkforbrenningsrist

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150027355A1 (en) * 2011-10-21 2015-01-29 Martin Gmbh Fuer Umwelt- Und Energietechnik Grate step module for a thrust combustion grate
US9845951B2 (en) * 2011-10-21 2017-12-19 Martin Gmbh Fuer Umwelt-Und Energietechnik Grate step module for a thrust combustion grate
US10099937B2 (en) 2014-02-13 2018-10-16 Siemens Aktiengesellschaft Conversion of metal carbonate to metal chloride
US10280090B2 (en) 2014-02-13 2019-05-07 Siemens Aktiengesellschaft Conversion of metal carbonate into metal chloride
CN111076163A (zh) * 2019-12-30 2020-04-28 河南农业大学 一种往复炉排秸秆捆烧锅炉

Also Published As

Publication number Publication date
CA2396294C (en) 2006-09-05
NO20023649D0 (no) 2002-07-31
EP1281913A3 (de) 2003-04-09
TWI220448B (en) 2004-08-21
DK1281913T3 (da) 2008-11-10
ATE399962T1 (de) 2008-07-15
CZ302839B6 (cs) 2011-12-07
ES2190909T3 (es) 2008-12-16
DE10137520B4 (de) 2004-05-13
PL355266A1 (en) 2003-02-10
SG98065A1 (en) 2003-08-20
PL198741B1 (pl) 2008-07-31
NO20023649L (no) 2003-02-03
JP3831311B2 (ja) 2006-10-11
EP1281913B1 (de) 2008-07-02
JP2003065526A (ja) 2003-03-05
DE50212424D1 (de) 2008-08-14
CA2396294A1 (en) 2003-02-01
BR0203032B1 (pt) 2010-12-28
BR0203032A (pt) 2003-09-09
ES2190909T1 (es) 2003-09-01
EP1281913A2 (de) 2003-02-05
RU2226650C1 (ru) 2004-04-10
DE10137520A1 (de) 2003-02-20
NO324288B1 (no) 2007-09-17
PT1281913E (pt) 2008-10-08
RU2002120938A (ru) 2004-01-27
CZ20022562A3 (cs) 2003-03-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MARTIN GMBH FUR UMWELT- UND ENERGIETECHNIK, GERMAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MARTIN, JOHANNES;WEBER, PETER;FAMILLER, WERNER;REEL/FRAME:013165/0344;SIGNING DATES FROM 20020607 TO 20020630

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION