CN101180499A - Cooling system for a combustion grate in an incineration plant - Google Patents

Cooling system for a combustion grate in an incineration plant Download PDF

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Publication number
CN101180499A
CN101180499A CNA2006800167342A CN200680016734A CN101180499A CN 101180499 A CN101180499 A CN 101180499A CN A2006800167342 A CNA2006800167342 A CN A2006800167342A CN 200680016734 A CN200680016734 A CN 200680016734A CN 101180499 A CN101180499 A CN 101180499A
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CN
China
Prior art keywords
grate
cooling fluid
beams
circulation system
primary air
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.)
Granted
Application number
CNA2006800167342A
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Chinese (zh)
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CN101180499B (en
Inventor
约翰·K·奥尔森
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Babcock and Wilcox Volund AS
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Babcock and Wilcox Volund AS
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Publication of CN101180499A publication Critical patent/CN101180499A/en
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Publication of CN101180499B publication Critical patent/CN101180499B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23HGRATES; CLEANING OR RAKING GRATES
    • F23H3/00Grates with hollow bars
    • F23H3/02Grates with hollow bars internally cooled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23HGRATES; CLEANING OR RAKING GRATES
    • F23H7/00Inclined or stepped grates
    • F23H7/06Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23HGRATES; CLEANING OR RAKING GRATES
    • F23H2900/00Special features of combustion grates
    • F23H2900/03021Liquid cooled grates

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Fertilizers (AREA)
  • Furnace Details (AREA)

Abstract

In a cooling fluid circulation system for an incineration or combustion grate in an incineration or combustion plant, the grate comprises a number of grate beams, at least some of which are movable for providing a movement of the fuel on top of said grate, primary air being blown through the grate from a primary air chamber below the grate Connections for circulating cooling fluid through said grate beams are positioned at the bottom side of said grate beams, inside said primary air chamber, and connected to rigid tubing, possible headers and flexible tubing, preferably in the form of bellow tubes, for providing a connection between moving tubing and stationary tubing in the cooling fluid circulation system. The flexible tubing is positioned outside the primary air chamber and the iead-in for the moving, rigid tubing through the wall of said primary air chamber is provided with a flexible bellow in order to avoid leakage of primary air along the tube. Hereby the flexible tubing is not subjected to the grate screenings falling down from the grate and the high temperatures thereof.

Description

The cooling system that is used for the burning fire grate of burning facility
Technical field
The present invention relates to a kind of in the illustrated cooling fluid circulation system of claim 1 preamble.
Background technology
In this cooling fluid circulation system, well-known, grate beams is arranged to movably, so that the motion of fuel on described fire grate top is provided, and make primary air blow over fire grate from the primary air chamber of fire grate below.Be used for circulating cooling fluid and be usually located at the bottom side of grate beams, so that do not influence the motion of fuel on described fire grate top by the joint of grate beams.In order to allow the motion of removable fire grate beam, before rigid line withdrawed from this primary air chamber, flexible tubing was arranged on the fire grate below of inside, primary air chamber usually, set up between pipeline and primary air chamber sidewall thus and fixedlyed connected.This cooling fluid circulation system is known in EP0804706 for example, still, does not mention flexible tubing especially.
Summary of the invention
Target of the present invention provides a kind of cooling fluid circulation system of type as mentioned above, by it, can avoid flexible tubing to be positioned at the fire grate below, this target is that the cooling fluid circulation system by described type realizes, according to the present invention, described cooling fluid circulation system also comprises the feature that the characteristic of claim 1 is illustrated.By this configuration, flexible tubing is positioned at outside, primary air chamber, thereby can not be subjected to the influence of the fire grate screening thing that falls down from fire grate and possible high temperature thereof, pipeline that be used to move, rigidity is provided with flexible bellows by the leading-in end (lead-in) of primary air chamber wall, leaks into the external world from inside, primary air chamber along pipe to avoid primary air.The preferred embodiment of cooling fluid circulation system represents that in the dependent claims for a person skilled in the art, the advantage of preferred embodiment is conspicuous after reading following detailed description.
Description of drawings
Below this specification, in the detailed part,, the present invention will be explained in further detail, wherein with reference to as shown in drawings according to the exemplary embodiment of cooling fluid circulation system of the present invention
Fig. 1 is the schematic side-view that can implement the local longitudinal cross-section of burning fire grate of the present invention,
Fig. 2 illustrates to have shown the pipeline that is connected in removable fire grate beam according to the present invention,
Fig. 3 illustrate to have shown the leading-in end of rigidity by primary air chamber wall, movable pipe and be used for movably, the pipeline of rigidity is connected to the flexible bellows of the outer setting of primary air chamber wall,
Fig. 4 illustrated to show the lyre form that is connected in series between the inlet that is used to provide the grate beams that is connected in series and the outlet pipe and
Fig. 5 has illustrated to show the pipe of the spiral form that is connected between the inlet that is used to provide the grate beams that is connected in series and the outlet.
The specific embodiment
Used heat burning facility as shown in Figure 1 comprises some grate block I-IV, each grate block includes the grate beams 1 of downward one-tenth stepped (stepped) and static grate beams in a lateral direction, the grate beams 1 of stepping is downwards extended along the moving direction of fuel on the grate block top, and is arranged to and can alternately moves.Thereby each grate block comprises some grate beams 1 that are arranged on primary air chamber P top, so that the guiding primary air is by the primary air opening in the fire grate.
As shown in Figure 2, removable fire grate beam 1 at one end is provided with travel mechanism 2, is provided with backing roll 3 at a relative end, and thus, removable fire grate beam 1 can move along the longitudinal direction.Grate beams 1 is provided with cooling channels (not showing in detail), and described cooling channels is supplied with cooling fluid by rigid pipe 4, and cooling fluid leaves grate beams by rigid pipe 5.Pipeline 4,5 is connected to inlet collecting 6 and the outlet header 7 that is positioned at a distance, grate beams 1 below.Though be rigidity,, pipeline 4,5 allows the specific minimum movement of grate beams with respect to header 6,7, allows relative less physical activities between each removable fire grate beam 1 thus.Respective stationary grate beams between removable fire grate beam is correspondingly provided with similar entrance pipe and export pipeline and inlet collecting and outlet header or traditional pipeline and header, but, these are not parts of the present invention, thereby do not describe in detail hereinafter.But described static grate beams is also connected on inlet collecting and the outlet header, and these static inlet collecting and outlet header pass primary air chamber wall and be connected to the outside in a conventional manner.
Utilize the pipeline 4,5 of lyre form, spiral form or coiling form, can reduce grate beams respectively and the above-mentioned distance between inlet collecting 6 and the outlet header 7.
Header 6,7 is directed on the case 8 that is positioned on P one side of primary air chamber, as shown in Figure 3, the opening 11,12 that the leading-in end that is used for header 6,7 passes case 8 stretches out, and described opening 11,12 is provided with the stud bolt that is used in airtight mode bellows 9,10 being connected to case 8.The opposite end of bellows 9,10 is connected on the pipeline 6,7 with air tight manner, so that the turnover cooling fluid, gastight joint is schematically illustrated by anchor clamps 13-16.
When removable fire grate beam 1 moves, header 6,7 mainly moves along the longitudinal direction of bellows 9,10, can not hinder opening 11,12, like this, rigid line 4,5,6,7 is connected in the external environment of P outside, primary air chamber in a movable manner, does not have the danger that primary air leaks into outside, primary air chamber.On the position of anchor clamps 15,16 back, a flexible tubing is set, be used for the entrance and exit of cooling fluid is connected to the stationary part of cooling fluid circulation system.
Cooling fluid is convenient in the situation of series circulation at least some grate beams therein, being connected in series between the inlet of the grate beams that is connected in series and the outlet can be arranged in lyre form, spiral form or the coiling form pipe, so that necessarily relative motion freely between the grate beams that is connected in series is provided.
Though the present invention has been described at specific embodiment in the front, as shown in drawings,, under the situation that does not break away from following claims, those skilled in the art can carry out many improvement.This improvement comprises the relevant cooling fluid circulation system of utilizing with other type of removable burning grate beams, does not for example need to be used for each removable fire grate beam of the independent leading-in end system of independent removable fire grate beam and independent header.

Claims (11)

1. be used for burning or the burning of combustion apparatus or the cooling fluid circulation system of burning fire grate, described fire grate comprises some grate beams, one of them a little grate beams is movably, so that the motion of fuel on described fire grate top is provided, primary air is blown over fire grate from the primary air chamber of fire grate below, the connection that is used to make cooling fluid cycle through described grate beams is positioned at the bottom side of the described grate beams of inside, described primary air chamber, and be connected in rigid line, can be header and the flexible tubing that is preferably the bellows form, so that being connected between mobile pipeline and the static pipeline is provided in cooling fluid circulation system, it is characterized in that, described flexible tubing is positioned at outside, primary air chamber, the rigid line that moves is provided with flexible bellows by the leading-in end of described primary air chamber wall, leaks along pipe to avoid primary air.
2. cooling fluid circulation system as claimed in claim 1 is characterized in that, the rigid pipe direction in the leading-in end is mainly on the moving direction of this point.
3. cooling fluid circulation system as claimed in claim 1 or 2 is characterized in that, cooling fluid in grate beams abreast the circulation and
-be used for the entrance and exit of cooling fluid by the circulation of static beam to be connected at least one group of header, described header is arranged on a distance, grate beams below, so as to make upright rigid pipe allow the certain free degree between the static grate beams relative motion and
-the entrance and exit that is used for the cooling fluid of travelling grate beam connects via another group header at least, and described header is arranged on a distance, grate beams below, so that make upright rigid pipe allow the relative motion of the certain free degree between the travelling grate beam.
4. cooling fluid circulation system as claimed in claim 1 or 2 is characterized in that, cooling fluid in grate beams abreast the circulation and
-be used for cooling fluid to be connected at least one group of header by the entrance and exit that static beam circulates, described header is arranged on the grate beams below, and be connected to the entrance and exit of grate beams by lyre form, spiral form or coiling form pipe, so that allow the certain free degree between the static grate beams relative motion and
-the entrance and exit that is used for the cooling fluid of travelling grate beam connects via another group header at least, be connected form setting between the entrance and exit of header and grate beams, so that allow the relative motion of the certain free degree between the travelling grate beam with lyre form, spiral form or coiling form pipe.
5. cooling fluid circulation system as claimed in claim 1 or 2, it is characterized in that, cooling fluid is in series circulation at least some grate beams, being connected in series with the form setting of lyre form, spiral form or coiling form pipe between the inlet of the grate beams that is connected in series and the outlet provides the relative motion of the certain free degree between the grate beams that is connected in series thus.
6. the described cooling fluid circulation system of arbitrary as described above claim is characterized in that, removable fire grate beam mainly moves along the throughput direction of fuel on the fire grate top linearly and mainly.
7. cooling fluid circulation system as claimed in claim 6 is characterized in that, the grate beams of fire grate side by side and can alternately move and be provided with still.
8. as claim 6 or 7 described cooling fluid circulation system, it is characterized in that grate beams is along the throughput direction longitudinal extension of fuel on the fire grate top.
9. as each described cooling fluid circulation system among the claim 6-8, it is characterized in that fire grate is subdivided into continuous grate block along described throughput direction.
10. as each described cooling fluid circulation system among the claim 6-9, it is characterized in that described grate beams has along the stair-stepping fire grate of the downward one-tenth of described throughput direction top.
11. the described cooling fluid circulation system of arbitrary as described above claim is characterized in that described cooling fluid is a water.
CN2006800167342A 2005-04-13 2006-03-03 Cooling system for a combustion grate in an incineration plant Expired - Fee Related CN101180499B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200500528 2005-04-13
DKPA200500528 2005-04-13
PCT/IB2006/050671 WO2006109199A1 (en) 2005-04-13 2006-03-03 Cooling system for a combustion grate in an incineration plant

Publications (2)

Publication Number Publication Date
CN101180499A true CN101180499A (en) 2008-05-14
CN101180499B CN101180499B (en) 2012-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006800167342A Expired - Fee Related CN101180499B (en) 2005-04-13 2006-03-03 Cooling system for a combustion grate in an incineration plant

Country Status (9)

Country Link
EP (1) EP1875133B1 (en)
JP (1) JP4948527B2 (en)
KR (1) KR101289560B1 (en)
CN (1) CN101180499B (en)
AT (1) ATE408096T1 (en)
DE (1) DE602006002742D1 (en)
DK (1) DK1875133T3 (en)
HK (1) HK1115764A1 (en)
WO (1) WO2006109199A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975507A1 (en) * 2007-03-29 2008-10-01 ThyssenKrupp Xervon Energy GmbH Grate for combustion plants
EP1983261B1 (en) * 2007-04-20 2015-04-08 Ernst Schenkel Combustion plant with a moving grate and a device to supply cooling liquid
KR101913063B1 (en) * 2018-03-07 2018-10-29 남창호 Cooling method of Water-cooled stocker with cooling path

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240590A (en) 1938-05-02 1941-05-06 George W Wallace Automatic fluid cooled grate
US4026247A (en) 1975-12-15 1977-05-31 S. J. Agnew Fluid cooled dump grate
JPH02106613A (en) * 1988-10-13 1990-04-18 Hitachi Zosen Corp Fire grate structure of incinerator
DK169828B1 (en) * 1992-11-27 1995-03-06 Smidth & Co As F L Flexible air supply connection in grate cooler
DK171048B1 (en) 1995-01-24 1996-04-29 Voelund Ecology Systems As Fuel transport incinerator for incinerators, in particular waste incinerators
DE19749227C2 (en) * 1997-11-07 1999-12-02 Krc Umwelttechnik Gmbh Water-cooled grate
EP0924464A1 (en) 1997-12-19 1999-06-23 KOCH, Theodor Grate for a combustion plant and method for its cooling
JP2000146141A (en) * 1998-11-06 2000-05-26 Hitachi Zosen Corp Cooling structure for fire grate in stoker type refuse incinerator
US6220190B1 (en) * 1999-01-15 2001-04-24 George David Dumbaugh Water-cooled oscillating grate system
JP2002349833A (en) * 2001-05-25 2002-12-04 Kubota Corp Fire grate cooling mechanism

Also Published As

Publication number Publication date
KR20080024112A (en) 2008-03-17
EP1875133B1 (en) 2008-09-10
HK1115764A1 (en) 2008-12-05
DK1875133T3 (en) 2008-12-01
KR101289560B1 (en) 2013-07-24
JP4948527B2 (en) 2012-06-06
JP2008536087A (en) 2008-09-04
WO2006109199A1 (en) 2006-10-19
CN101180499B (en) 2012-07-04
ATE408096T1 (en) 2008-09-15
EP1875133A1 (en) 2008-01-09
DE602006002742D1 (en) 2008-10-23

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