CN105698186A - Garbage incineration boiler - Google Patents
Garbage incineration boiler Download PDFInfo
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- CN105698186A CN105698186A CN201610264426.7A CN201610264426A CN105698186A CN 105698186 A CN105698186 A CN 105698186A CN 201610264426 A CN201610264426 A CN 201610264426A CN 105698186 A CN105698186 A CN 105698186A
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- high temperature
- boiler
- evaporation
- flue
- heating surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/006—General arrangement of incineration plant, e.g. flow sheets
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
- F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to a garbage incineration boiler, and belongs to the technical field of combustion equipment. The garbage incineration boiler comprises a fire grate, a boiler chamber and a steel frame, wherein the fire grate is mounted below the boiler chamber; the boiler chamber is mounted on the steel frame, and comprises a hearth, a re-burning chamber and three flues, which are sequentially communicated; the re-burning chamber, the three flues, a horizontal flue, a tail flue, a lower ash bucket and a connecting flue are sequentially arranged behind the hearth; the hearth, the re-burning chamber, the three flues and the tail flue are all vertically arranged. Compared with a vertical boiler, the boiler has the advantage that a partition water-cooling wall is added to the re-burning chamber, and a low-temperature superheater is placed in the horizontal flue, accordingly, the height of the boiler is greatly reduced; compared with a horizontal boiler, the boiler has the advantages that a high-temperature superheater and a medium-temperature superheater are placed in a third flue, so that the horizontal flue is shortened; a coal economizer is arranged vertically, therefore, the depth of the boiler is greatly reduced, the occupied area is reduced, and the investment in the project is further effectively reduced.
Description
Technical field
The invention belongs to technical field of combustion equipment, be particularly related to garbage burning boiler。
Background technology
Along with the development of national economy, the raising of people's living standard and increasing rapidly of urban population, Domestic Refuse sharply increases, and refuse thermal value also substantially increases, and adopts burning method to process domestic waste and is used widely just gradually in China and promotes。The burning power plant in current many cities is all in overload operation state, as met with equipment fault or overhaul, then will result in substantial amounts of rubbish to dissolve nowhere, therefore much power plant all adopts the mode carrying out extending on the basis in original factory site to improve the day output of house refuse, the pressure brought to alleviate house refuse amount to increase sharply。That the garbage treatment quantity according to initial planning is selected based on factory site, then expansion project site location, size selection on will be very restricted。If narrow field, select which kind of garbage burning boiler type of furnace, how to arrange just most important。
In order to make full use of space, burning domestic garbage better, therefore completely newly develop a kind of garbage burning boiler。
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, and a kind of garbage burning boiler is provided, narrow and small place can be made full use of, it is ensured that house refuse is fully burnt and burns and effectively reduce the garbage burning boiler of construction investment。
Realizing above-mentioned purpose, the present invention adopts the following technical scheme that
Garbage burning boiler, includes fire grate, furnace chamber and steelframe；Described fire grate is installed on the lower section of furnace chamber, and described furnace chamber is installed on steelframe；Described furnace chamber includes the burner hearth, burning chamber and three flues that sequentially connect；Set gradually burning chamber, three flues, horizontal flue, back-end ductwork, bottom ash bucket after described burner hearth and connect flue；Described burner hearth, burning chamber, three flues and back-end ductwork all erect laying。
Described fire grate top is primary combustion zone, installs auxiliary burner, set-point, rear portion ignition combustor in primary combustion zone front portion；Described auxiliary burner is installed on the bottom side wall of burner hearth；Described start-up burner is installed on the bottom Hou Qiang of burner hearth；Described fire grate face arch arranged above and rear arch；Described face arch and rear arch are respectively positioned on lower furnace portion；The layout angle of described rear arch is 10 DEG C ~ 15 DEG C。
Described face arch and rear arch place arranging multiplayer secondary air system；Described multilamellar secondary air system is made up of front secondary wind mjector, rear upper secondary wind mjector and rear lower secondary wind mjector；The air-out direction of described front secondary wind mjector is downward 20 degree of level；After described, the air-out direction of upper secondary wind mjector is downward 2 degree of level；After described, the air-out direction of lower secondary wind mjector is horizontal direction。
Arranging three layers denitration spout in described burner hearth, denitration spout is arranged at interval, furnace height direction；The tiling of described burning chamber inwall has a partition wall water-cooling wall, and parallel and be arranged at intervals with multilamellar partition wall water-cooling wall in burning chamber；Evaporating heating surface, high temperature superheater and medium temperature overheater are installed inside described three flues from the bottom up successively。
Described evaporating heating surface includes evaporating heating surface piping, evaporation gripper shoe, evaporation comb plate, comb joint, evaporation round steel, evaporation pipe, evaporation abrasion-proof cover plate；Described evaporation gripper shoe one end is welded on three flue inner wall, the other end fixing evaporation comb plate, comb joint；Described evaporation comb plate, comb joint top is provided with spaced caulking groove, and evaporating heating surface piping is installed on the caulking groove at evaporation comb plate, comb joint top；Described evaporating heating surface piping is equidistantly arranged by one group of tube bank in ∑ font and is formed；Described evaporating heating surface piping has multiple rows of, and equidistantly arranges；Described evaporation abrasion-proof cover plate is installed on evaporating heating surface piping upper and lower；Three layers it is provided with by evaporating round steel and the molecular fixing device of evaporation tube to reinforce evaporating heating surface between described evaporating heating surface piping；Described evaporation round steel is inserted in evaporation pipe。
Described high temperature superheater includes high temperature superheater piping, high-temperature support plate, high temperature comb plate, comb joint, high-temperature round bar steel, high temperature pipe, high temperature abrasion-proof cover plate；Described high-temperature support plate one end is welded on three flue inner wall, and the other end fixes high temperature comb plate, comb joint；Described high temperature comb plate, comb joint top is provided with spaced caulking groove, and high temperature superheater piping is installed on the caulking groove at high temperature comb plate, comb joint top；Described high temperature superheater piping adopts the single tube coil structures of coil pattern；Described high temperature abrasion-proof cover plate is installed on the upper and lower of high temperature superheater piping；Two layers it are provided with by the molecular fixing device of high-temperature round bar steel and high-temperature pipe to reinforce high temperature superheater between described high temperature superheater piping；Described high-temperature round bar steel is inserted in high temperature pipe。
Low temperature superheater is installed in described horizontal flue, economizer is installed in described back-end ductwork；Described low temperature superheater and economizer all adopt the single tube coil structures of coil pattern。
In described back-end ductwork side arrangement and reaction tower；Described neutralization reaction tower connects back-end ductwork by connecting flue and bottom ash bucket；Described bottom ash bucket is installed on bottom back-end ductwork；And bottom ash bucket is provided with groove profile segregator；Described groove profile segregator upper end is welded in the beam bottom back-end ductwork, and lower end is welded on the steel plate of bottom ash bucket, and groove profile segregator divides 2 misarrangement row to install；Described connection flue is laid in back-end ductwork front；Described back-end ductwork be connected between flue and two gas bypass be set。
Described evaporating heating surface, high temperature superheater and medium temperature overheater place all arrange steam sootblower。
Described low temperature superheater and economizer place all arrange shock wave soot blower。
By adopting such scheme, the invention have the advantages that
1, usual vertical waste incineration boiler is that high temperature superheater, medium temperature overheater, low temperature superheater are all disposed within three flues, and Horizontal garbage incinerator is that high temperature superheater, medium temperature overheater, low temperature superheater are all disposed within horizontal flue。The relative vertical boiler of this boiler, partition wall water-cooling wall is increased in burning chamber, low temperature superheater is placed on horizontal flue, thus greatly reducing boiler height, relative horizontal boiler, it is placed on the 3rd flue with middle mistake exceeding, shortening horizontal flue, economizer adopts vertical, thus substantially reducing boiler for deeply, reduce floor space, thus effectively reducing construction investment。
2, connect flue and be arranged on back-end ductwork front, can effectively shorten boiler for deeply, it is thus possible at the place reasonable Arrangement boiler of limited space。
3, furnace height direction arranges three layers denitration (SNCR) spout, when power condition changing, one layer of spout can be made to be in and meet the position that denitration (SNCR) is temperature required, thus carrying out effective denitration。
4, partition wall water-cooling wall is set in burning chamber, not only considerably increases boiler heating surface, and the effect reinforcing front and back water-cooling wall can also be played, it is to avoid water-cooling wall is unstability because of carrying。
5, evaporating heating surface, high temperature superheater and medium temperature overheater are arranged in three flues, make full use of the space in three flues, effectively shorten the length of horizontal flue, make boiler structure compact, the flying dust that also can reduce after three flues in flue, a part of flying dust is controlled in three flues, is discharged by following ash dropped unit。
6, in order to meet environmental requirement, suppress the generation of dioxin harmful substance, burner hearth is provided with auxiliary burner at its underpart side wall, and after lower furnace portion, wall is provided with start-up burner, promotes in-furnace temperature and in-furnace temperature keeps temperature when reducing when guaranteeing boiler startup with this。
7, lower furnace portion, be positioned at fire grate suitable face arch arranged above and rear arch, it is provided with multilamellar secondary wind at arch place, front and back, make full use of high speed secondary wind jet leader tape and push the effect of flue gas, strengthen the disturbance of flue gas, cause flue-gas swirl, extend flue gas stroke in stove, improve the degree of filling of gas stream in the stove, make fuel and air be sufficiently mixed, burn completely, burn。
8, superheater adopts coil pattern, single tube coil structures, and steam flow rate is very fast, and tube wall temperature is relatively low, it is possible to be effectively prevented high temperature corrosion。
9, evaporating heating surface, high temperature superheater and medium temperature overheater place are owing to temperature is high and space is big, with undesirable (the effective soot blowing radius of shock wave soot blower normally only 2 ~ 3 meters of shock wave soot blower soot blowing effect, and the flying dust soot blowing poor effect to high temperature bond), therefore layout expansion steam lance, and low temperature superheater and economizer place width relative narrower, flue-gas temperature is less high, if also will increase the consumption of Boiler Steam by the words of steam soot blowing, reduce boiler output, and the water vapour volume share in increase flue gas, easily heating surface is produced corrosion, and adopt shock-wave ash blowing can meet soot blowing requirement。Therefore low temperature superheater and economizer place arrange shock wave soot blower, all can effectively remove dust stratification, it is ensured that safe operation of the boiler。
10, back-end ductwork side is arranged and is neutralized reaction tower, is connected as a single entity with boiler steel frame supporting the framework neutralizing reaction tower, not only saves steel, also a saving place, make boiler room compacter。
11, back-end ductwork be connected between flue and two gas bypass be set, homoiothermic amplitude is big, regulates performance good, can regulate exhaust gas temperature better, so as to be in the temperature of applicable denitration (SCR) needs。
12, groove profile segregator is installed in the middle of the ash bucket of bottom。The resistance of groove profile segregator is little, install easily manufactured, easily arrange, taking up room little, blast damage is little, and can efficiently separate oarse-grained flying dust, reduces the flying dust amount in tail flue gas。
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the present invention；
Fig. 2 is the backsight structural representation of the present invention；
Fig. 3 is the top view of the present invention；
Fig. 4 is the main TV structure schematic diagram of evaporating heating surface；
Fig. 5 is the A-A face structural representation of Fig. 4；
Fig. 6 is the B-B face structural representation of Fig. 4；
Fig. 7 is the main TV structure schematic diagram of high temperature superheater；
Fig. 8 is the C-C face structural representation of Fig. 7；
Fig. 9 is the D-D face structural representation of Fig. 7；
Figure 10 is the structural representation of groove profile segregator；
In figure: fire grate 1, steelframe 2, start-up burner 3, auxiliary burner 4, burner hearth 5, burning chamber 6, three flues 7, horizontal flue 8, back-end ductwork 9, bottom ash bucket 10, groove profile segregator 11, connect flue 12, evaporating heating surface 13, evaporating heating surface piping 13a, evaporation gripper shoe 13b, evaporation comb plate, comb joint 13c, evaporation round steel 13d, evaporation pipe 13e, evaporation abrasion-proof cover plate 13f, high temperature superheater 14, high temperature superheater piping 14a, high-temperature support plate 14b, high temperature comb plate, comb joint 14c, high-temperature round bar steel 14d, high temperature pipe 14e, high temperature abrasion-proof cover plate 14f, medium temperature overheater 15, low temperature superheater 16, economizer 17, neutralize reaction tower 18, face arch 19, rear arch 20, multilamellar secondary air system 21, steam sootblower 22, shock wave soot blower 23, gas bypass 24, partition wall water-cooling wall 25, denitration spout 26。
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described。
As shown in Figure 1, Figure 2, Figure 3 shows, garbage burning boiler, include fire grate 1, furnace chamber and steelframe 2；Described fire grate 1 is installed on the lower section of furnace chamber, and described furnace chamber is installed on steelframe 2。
Fire grate 1 top is primary combustion zone, installs auxiliary burner 4, set-point, rear portion ignition combustor 3 in primary combustion zone both sides。Described furnace chamber includes the burner hearth 5, burning chamber 6 and three flues 7 that sequentially connect。Described auxiliary burner 4 is installed on the bottom side wall of burner hearth 5。Described start-up burner 3 is installed on the bottom Hou Qiang of burner hearth 5。When boiler startup, need start-up burner 5 pilot fuel, put into auxiliary burner 4 simultaneously and promote in-furnace temperature, it is ensured that rubbish enters temperature during stove and is higher than 850 DEG C。When in-furnace temperature reduces, auxiliary burner 4 can be put into and guarantee that in-furnace temperature is higher than 850 DEG C with this, meet environmental requirement, it is suppressed that the generation of dioxin harmful substance。
Fire grate 1 face arch 19 arranged above and rear arch 20。Described face arch 19 and rear arch 20 are respectively positioned on burner hearth 5 bottom。In order to adapt to the change of refuse thermal value, the layout angle of rear arch 20 is 10 DEG C ~ 15 DEG C。When refuse thermal value is low, the layout angle of rear arch 20 is 10 DEG C ~ 12 DEG C；When refuse thermal value height, the layout angle of rear arch 20 is 13 DEG C ~ 15 DEG C。Layout angle is the number of degrees of parts and the angle of cut of horizontal plane。
At face arch 19 and rear arch 20 place arranging multiplayer secondary air system 21。Described multilamellar secondary air system 21 is made up of front secondary wind mjector, rear upper secondary wind mjector and rear lower secondary wind mjector。As preferably, the air-out direction of described front secondary wind mjector is downward 20 degree of level。After described, the air-out direction of upper secondary wind mjector is downward 2 degree of level。After described, the air-out direction of lower secondary wind mjector is horizontal direction。The setting of front secondary wind mjector, rear upper secondary wind mjector and rear lower secondary wind mjector, make full use of high speed secondary wind jet leader tape and push the effect of flue gas, strengthen the disturbance of flue gas, cause flue-gas swirl, extend flue gas stroke in stove, improve the degree of filling of gas stream in the stove, make fuel and air be sufficiently mixed, burn completely, burn。
Set gradually burning chamber 6, three flue 7, horizontal flue 8, back-end ductwork 9, bottom ash bucket 10 after described burner hearth 5 and connect flue 12。
Described burner hearth 5, burning chamber 6, three flue 7 and back-end ductwork 9 all erect laying, and burning chamber 6 is provided above entrance and connects with burner hearth 5, and burning chamber 6 is arranged below outlet and connects with three flues 7。Horizontal flue 8 one end connects the top of three flues 7, and the other end connects the top of back-end ductwork 9。
Flue gas is up at burner hearth 5, enters into burning chamber 6, then descending in burning chamber 6, enters three flues 7, then up in three flues 7, enter horizontal flue 8, then in horizontal flue 8 horizontal feed, finally descending in back-end ductwork 9。
Arranging three layers denitration spout 26 in burner hearth 5, denitration spout 26 is arranged at burner hearth 5 short transverse interval, a wherein pull-up nitre spout 26 can be made to be in meet, when power condition changing, the position that denitration is temperature required to meet, thus carrying out effective denitration。
The inwall tiling of described burning chamber 6 has partition wall water-cooling wall 25。Fig. 3 partly cuts open top view, parallel and be arranged at intervals with multilamellar partition wall water-cooling wall 25 in burning chamber 6。Partition wall water-cooling wall 25, not only considerably increases boiler heating surface, and can also play the effect reinforcing front and back water-cooling wall, it is to avoid water-cooling wall is unstability because of carrying。
Described three flues 7 are internal installs evaporating heating surface 13, high temperature superheater 14 and medium temperature overheater 15 from the bottom up successively。This structure makes full use of the space in three flues 7, effectively shortens the length of horizontal flue, makes boiler structure compact, also can reduce the flying dust in three flue 7 flues below, a part of flying dust be controlled in three flues 7, is discharged by following ash dropped unit。
Described evaporating heating surface 13 includes evaporating heating surface piping 13a, evaporation gripper shoe 13b, evaporation comb plate, comb joint 13c, evaporation round steel 13d, evaporation pipe 13e, evaporation abrasion-proof cover plate 13f。Described evaporation gripper shoe 13b one end is welded on three flue 7 inwalls, the other end fixing evaporation comb plate, comb joint 13c。Described evaporation comb plate, comb joint 13c top is provided with spaced caulking groove, and evaporating heating surface piping 13a is installed on the caulking groove at evaporation comb plate, comb joint 13c top。Described evaporating heating surface piping 13a is equidistantly arranged by one group of tube bank in ∑ font and forms；Described evaporating heating surface piping 13a has multiple rows of, and equidistantly arranges；Described evaporation abrasion-proof cover plate 13f is installed on evaporating heating surface piping 13a upper and lower；It is provided with three layers between described evaporating heating surface piping 13a by evaporating round steel 13d and the evaporation pipe 13e fixing device formed to reinforce evaporating heating surface 13, prevents tube bank temperature distortion；Described evaporation round steel 13d is inserted in evaporation pipe 13e。
Described high temperature superheater 14 includes high temperature superheater piping 14a, high-temperature support plate 14b, high temperature comb plate, comb joint 14c, high-temperature round bar steel 14d, high temperature pipe 14e, high temperature abrasion-proof cover plate 14f。Described high-temperature support plate 14b one end is welded on three flue 7 inwalls, and the other end fixes high temperature comb plate, comb joint 14c。Described high temperature comb plate, comb joint 14c top is provided with spaced caulking groove, and high temperature superheater piping 14a is installed on the caulking groove at high temperature comb plate, comb joint 14c top。Described high temperature superheater piping 14a adopts the single tube coil structures of coil pattern；Described high temperature abrasion-proof cover plate 14f is installed on the upper and lower of high temperature superheater piping 14a；It is provided with two layers of fixing device being made up of high-temperature round bar steel 14d and high temperature pipe 14e between described high temperature superheater piping 14a to reinforce high temperature superheater, prevents tube bank temperature distortion；Described high-temperature round bar steel 14d is inserted in high temperature pipe 14e。
Low temperature superheater 16 is installed in described horizontal flue 8, in described back-end ductwork 9, economizer 17 is installed。Described low temperature superheater 16 and economizer 17 all adopt the single tube coil structures of coil pattern, and steam flow rate is very fast, and tube wall temperature is relatively low, it is possible to effectively prevent high temperature corrosion。
With reaction tower 18 in described back-end ductwork 9 side arrangement；Described neutralization reaction tower 18 connects back-end ductwork 9 by connecting flue 12 and bottom ash bucket 10。Described bottom ash bucket 10 is installed on bottom back-end ductwork 9；And bottom ash bucket 10 is provided with groove profile segregator 11。Described groove profile segregator 11 upper end is welded in the beam bottom back-end ductwork 9, and lower end is welded on the steel plate of bottom ash bucket 10, and 11 point of 2 misarrangement row of groove profile segregator are installed。The resistance of groove profile segregator 11 is little, install easily manufactured, easily arrange, taking up room little, blast damage is little, and can efficiently separate oarse-grained flying dust, reduces the flying dust amount in tail flue gas。
Described connection flue 12 is laid in back-end ductwork 9 front, therefore, connects flue 12 and is positioned at immediately below horizontal flue 8, can effectively shorten boiler for deeply, it is thus possible at the place reasonable Arrangement boiler of limited space。
Described neutralization reaction tower 18 is fixed on steelframe 2。It is connected as a single entity with boiler steel frame supporting the framework neutralizing reaction tower, not only saves steel, also a saving place, make boiler room compacter。
Described back-end ductwork 9 be connected between flue 12 and two gas bypass 24 be set, homoiothermic amplitude is big, regulates performance good, can regulate exhaust gas temperature better, so as to be in the temperature of applicable denitration SCR needs。
Evaporating heating surface 13, high temperature superheater 14 and medium temperature overheater 15 place arrange steam sootblower 22。Low temperature superheater 16 and economizer 17 place arrange shock wave soot blower 23。
Due to effective soot blowing radius normally only 2 ~ 3 meters of shock wave soot blower, and the flying dust soot blowing poor effect to high temperature bond。Evaporating heating surface 13, high temperature superheater 14 and medium temperature overheater 15 place are owing to temperature is high and space is big, undesirable by shock wave soot blower soot blowing effect, therefore arrange expansion steam lance。
And low temperature superheater 16 and economizer 17 place width relative narrower, flue-gas temperature is less high, if also will increase the consumption of Boiler Steam by the words of steam soot blowing, reduce boiler output, and the water vapour volume share in increase flue gas, easily heating surface is produced corrosion, and adopt shock-wave ash blowing can meet soot blowing requirement。Therefore low temperature superheater 16 and economizer 17 place arrange shock wave soot blower 23, all can effectively remove dust stratification, it is ensured that safe operation of the boiler。
Present invention embodiment is illustrated, and under the premise without departing from present principles, this device can also make some deformation and improvement。It should be pointed out that, that all employings are equal to the technical scheme that the modes such as replacement or equivalent transformation obtain, all fall within protection scope of the present invention。
Claims (10)
1. garbage burning boiler, it is characterised in that include fire grate (1), furnace chamber and steelframe (2)；Described fire grate (1) is installed on the lower section of furnace chamber, and described furnace chamber is installed on steelframe (2)；Described furnace chamber includes the burner hearth (5), burning chamber (6) and three flues (7) that sequentially connect；Set gradually burning chamber (6), three flues (7), horizontal flue (8), back-end ductwork (9) after described burner hearth (5) and connect flue (12)；Described burner hearth (5), burning chamber (6), three flues (7) and back-end ductwork (9) all erect laying。
2. garbage burning boiler as claimed in claim 1, it is characterised in that described fire grate (1) top is primary combustion zone, installs auxiliary burner (4), set-point, rear portion ignition combustor (3) in primary combustion zone front portion；Described auxiliary burner (4) is installed on the bottom side wall of burner hearth (5)；Described start-up burner (3) is installed on the bottom Hou Qiang of burner hearth (5)；Described fire grate (1) face arch arranged above (19) and rear arch (20)；Described face arch (19) and rear arch (20) are respectively positioned on burner hearth (5) bottom；The layout angle of described rear arch (20) is 10 DEG C ~ 15 DEG C。
3. garbage burning boiler as claimed in claim 2, it is characterised in that described face arch (19) and rear arch (20) place arranging multiplayer secondary air system (21)；Described multilamellar secondary air system (21) is made up of front secondary wind mjector, rear upper secondary wind mjector and rear lower secondary wind mjector；The air-out direction of described front secondary wind mjector is downward 20 degree of level；After described, the air-out direction of upper secondary wind mjector is downward 2 degree of level；After described, the air-out direction of lower secondary wind mjector is horizontal direction。
4. garbage burning boiler as claimed in claim 1, it is characterised in that arranging three layers denitration spout (26) in described burner hearth (5), denitration spout (26) is arranged at burner hearth (5) short transverse interval；The tiling of described burning chamber (6) inwall has a partition wall water-cooling wall (25), and parallel and be arranged at intervals with multilamellar partition wall water-cooling wall (25) in burning chamber (6)；Described three flues (7) are internal installs evaporating heating surface (13), high temperature superheater (14) and medium temperature overheater (15) from the bottom up successively。
5. garbage burning boiler as claimed in claim 4, it is characterized in that, described evaporating heating surface (13) includes evaporating heating surface piping (13a), evaporation gripper shoe (13b), evaporation comb plate, comb joint (13c), evaporation round steel (13d), evaporation pipe (13e), evaporation abrasion-proof cover plate (13f)；Described evaporation gripper shoe (13b) one end is welded on burning chamber (6) inwall, the other end fixing evaporation comb plate, comb joint (13c)；Described evaporation comb plate, comb joint (13c) top is provided with spaced caulking groove, and evaporating heating surface piping (13a) is installed on the caulking groove at evaporation comb plate, comb joint (13c) top；Described evaporating heating surface piping (13a) is equidistantly arranged by one group of tube bank in ∑ font and is formed；Described evaporating heating surface piping (13a) has multiple rows of, and equidistantly arranges；Described evaporation abrasion-proof cover plate (13f) is installed on evaporating heating surface piping (13a) upper and lower；Three layers it is provided with by evaporating round steel (13d) and evaporation pipe (13e) the fixing device that forms to reinforce evaporating heating surface (13) between described evaporating heating surface piping (13a)；Described evaporation round steel (13d) is inserted in evaporation pipe (13e)。
6. garbage burning boiler as claimed in claim 4, it is characterized in that, described high temperature superheater (14) includes high temperature superheater piping (14a), high-temperature support plate (14b), high temperature comb plate, comb joint (14c), high-temperature round bar steel (14d), high temperature pipe (14e), high temperature abrasion-proof cover plate (14f)；Described high-temperature support plate (14b) one end is welded on burning chamber (6) inwall, and the other end fixes high temperature comb plate, comb joint (14c)；Described high temperature comb plate, comb joint (14c) top is provided with spaced caulking groove, and high temperature superheater piping (14a) is installed on the caulking groove at high temperature comb plate, comb joint (14c) top；Described high temperature superheater piping (14a) adopts the single tube coil structures of coil pattern；Described high temperature abrasion-proof cover plate (14f) is installed on the upper and lower of high temperature superheater piping (14a)；Two layers of fixing device being made up of high-temperature round bar steel (14d) and high temperature pipe (14e) it are provided with to reinforce high temperature superheater (14) between described high temperature superheater piping (14a)；Described high-temperature round bar steel (14f) is inserted in high temperature pipe (14e)。
7. garbage burning boiler as claimed in claim 1, it is characterised in that install low temperature superheater (16) in described horizontal flue (8), installs economizer (17) in described back-end ductwork (9)；Described low temperature superheater (16) and economizer (17) all adopt the single tube coil structures of coil pattern。
8. garbage burning boiler as claimed in claim 1, it is characterised in that with reaction tower (18) in described back-end ductwork (9) side arrangement；Described neutralization reaction tower (18) connects back-end ductwork (9) by connecting flue (12) and bottom ash bucket (10)；Described bottom ash bucket (10) is installed on back-end ductwork (9) bottom；And bottom ash bucket (10) is provided with groove profile segregator (11)；Described groove profile segregator (11) upper end is welded in the beam of back-end ductwork (9) bottom, and lower end is welded on the steel plate of bottom ash bucket (10), and groove profile segregator (11) point 2 misarrangement row are installed；Described connection flue (12) is laid in back-end ductwork (9) front；Described back-end ductwork (9) be connected between flue (12) and two gas bypass (24) be set。
9. garbage burning boiler as claimed in claim 4, it is characterised in that described evaporating heating surface (13), high temperature superheater (14) and medium temperature overheater (15) place all arrange steam sootblower (22)。
10. garbage burning boiler as claimed in claim 7, it is characterised in that described low temperature superheater (16) and economizer (17) place all arrange shock wave soot blower (23)。
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| CN201610264426.7A CN105698186B (en) | 2016-04-26 | 2016-04-26 | Garbage burning boiler |
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| CN201610264426.7A CN105698186B (en) | 2016-04-26 | 2016-04-26 | Garbage burning boiler |
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Effective date of registration: 20230719 Address after: 325000 Yongzhong Dushan village, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Wenzhou Longwan Weiming environmental protection energy Co.,Ltd. Address before: 517 Wuci Road, Ouhai Development Zone, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG WEIMING ENVIRONMENT PROTECTION Co.,Ltd. |