CN205717151U - A kind of coal water slurry boiler - Google Patents

A kind of coal water slurry boiler Download PDF

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Publication number
CN205717151U
CN205717151U CN201620431427.1U CN201620431427U CN205717151U CN 205717151 U CN205717151 U CN 205717151U CN 201620431427 U CN201620431427 U CN 201620431427U CN 205717151 U CN205717151 U CN 205717151U
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China
Prior art keywords
water slurry
coal water
boiler
header
convection bank
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CN201620431427.1U
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Chinese (zh)
Inventor
席向东
刘东平
张又红
潘姚姚
刘小六
王改
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Hangzhou environmental protection Polytron Technologies Inc
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HANGZHOU JUNENG BOILER CO Ltd
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Priority to CN201620431427.1U priority Critical patent/CN205717151U/en
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Abstract

This utility model belongs to field of boilers, is specifically related to a kind of coal water slurry boiler (single burner hearth " steam and organic heat carrier " double WATER AS FLOW MEDIUM fluid-fired boiler).This utility model provides a kind of coal water slurry boiler, comprising: fin panel casing burner hearth, burner, convection bank.Drum is included at coal water slurry boiler of the present utility model, header, fin panel casing, down-comer, convection bank and organic heat carrier import and export header, drum, header, fin panel casing, down-comer constitutes the boiler circuit closed, convection bank is imported and exported header with organic heat carrier and is connected, and constitutes the heating agent blood circulation closed.Coal water slurry boiler of the present utility model can provide steam and organic heat carrier two media simultaneously.

Description

A kind of coal water slurry boiler
Technical field
This utility model belongs to field of boilers, and (" steam and organic heat carry single burner hearth to be specifically related to a kind of coal water slurry boiler Body " double WATER AS FLOW MEDIUM fluid-fired boilers).
Background technology
Water-coal-slurry is the coal new product developed after late 1970s world oil crisis, and burn-off rate is high, May be up to more than 98%, be a kind of novel clean fuel that can substitute for heavy oil and coal.In boiler operatiopn overall process, water-coal-slurry The conveying of liquid pipeline and spray burning, automatic ignition, it is achieved the Automated condtrol of major part boiler operatiopn, simple to operate.In recent years Coming, cool water mixture burning is also widely used on Industrial Boiler.At present at the coal water slurry industry boiler run, steam boiler Based on the double drum water pipe structure of D type, boiler of organic heat carrier is based on horizontal coiled-tube, and all can only provide the user with single Jie , therefore there is following deficiency in matter:
1) load regulation range is little, can only provide Single Medium (steam or organic heat carrier).
2) burning is uniform not, and fire box temperature is higher, is unfavorable for reducing NOXContent.
3) Boiler Ash, slag cleaning inconvenience.
4) boiler room floor space is big.
Utility model content
The problems referred to above being prior art and existing to be solved in the utility model, it is desirable to provide can be in a kind of structure simultaneously Steam and the coal water slurry boiler of organic heat carrier two media are provided.
For reaching above-mentioned advantage, this utility model provides a kind of coal water slurry boiler, comprising: fin panel casing burner hearth, burning Device, drum, crust block pipe, header, down-comer;Described drum, header, fin panel casing burner hearth, down-comer constitute boiler circuit and use Heat in absorbing described fin panel casing burner hearth manufactures steam, and described pulverized-coal fired boiler also includes, convection bank, and organic heat carries Body header;Described convection bank connects formation machine heat carrier recirculation system with described organic heat carrier header.
In an embodiment of coal water slurry boiler of the present utility model, described fin panel casing burner hearth is by fin panel casing Burner hearth forms.
In an embodiment of coal water slurry boiler of the present utility model, described convection bank is coil.
In an embodiment of coal water slurry boiler of the present utility model, described convection bank include high temperature convection bank and Low temperature convection bank, organic heat carrier header includes organic heating medium outlet header, organic heat carrier import header, described convection current Tube bank is for heated organic heat carrier.
In an embodiment of coal water slurry boiler of the present utility model, in the middle part of described fin panel casing burner hearth, it is provided with two rows Burnout degree import.
In an embodiment of coal water slurry boiler of the present utility model, the furnace wall of described fin panel casing lower furnace portion by Gradual change is narrow.
In an embodiment of coal water slurry boiler of the present utility model, described high temperature convection bank, described low temperature convection current Tube bank is arranged by the flue gas discharge direction of described coal water slurry boiler.
In an embodiment of coal water slurry boiler of the present utility model, described burner is positioned at described fin panel casing In the middle part of front wall.
In an embodiment of coal water slurry boiler of the present utility model, described fin panel casing is formed around soot blower.
In an embodiment of coal water slurry boiler of the present utility model, described combustor level direction is arranged.
In coal water slurry boiler of the present utility model: coal water slurry boiler includes fin panel casing and convection bank, convection tube Bundle connects with organic heat carrier header.Coal water slurry boiler of the present utility model can the " mono-dual-purpose 〃 of stove, " can be provided the user with simultaneously Steam and organic heat carrier 〃 two media.Economizer, drum, down-comer, header, vapour communicating pipe and burner hearth fin panel casing structure Become a boiler circuit closed;Import and export header, high and low temperature convection bank constitute a heat medium system closed;Two are Uniting non-interference, therefore, this type of furnace can provide steam and organic heat carrier two media to user's designated equipment simultaneously.
Accompanying drawing explanation
Fig. 1 be this utility model first embodiment burner at the bottom of put single burner hearth type " steam and organic heat carrier " double media The structure chart of coal water slurry boiler.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
In figure, 1-burner, 2-stable burning room, 3-fin panel casing burner hearth, 4-down-comer, 5-drum, 6-pushes up header, on 7- Header, 8-vapour communicating pipe, 9-explosion proof door, 10-crust block pipe, 11-burnout degree import, 12-lower header, 13-organic heat carrier import Header, 14-low temperature convection bank, 15-high temperature convection bank, 16-organic heat carrier outlet header, 17-economizer, 18-air Preheater, 19-ash dropping hopper, 20-mucking machine.
Detailed description of the invention
By further illustrating the technological means and effect that this utility model taked by reaching predetermined utility model purpose, Below in conjunction with accompanying drawing and preferred embodiment, foundation be the utility model proposes detailed description of the invention, structure, feature and effect thereof, After describing in detail such as.
Fig. 1 be this utility model first embodiment burner at the bottom of put single burner hearth type " steam and organic heat carrier " double media The structure chart of coal water slurry boiler.Fig. 2 is that the A-A of Fig. 1 is to sectional view.Referring to the drawings 1,2, coal water slurry boiler of the present utility model, Including two burners 1, stable burning room 2, fin panel casing burner hearth 3, down-comer 4, drum 5, top header 6, upper collecting chamber 7, vapour connection Pipe 8, crust block pipe 10, lower header 12, high temperature convection bank 15, low temperature convection bank 14, air preheater 18, economizer 17, fall Ash bucket 19, mucking machine 20.
Burner 1 is positioned at the front wall of fin panel casing burner hearth 3, and burner 1 is horizontally disposed;Fin panel casing burner hearth 3 leading portion It is provided with the stable burning room 2 of certain length;Fin panel casing burner hearth 3 can fall ash automatically, and burner 1 produces heat for metabolic water coal slurry Amount.The quantity of burner 1 is a pair.Two burner 1 burnings can independently control.Two burners 1 are symmetrical arranged.Ash dropping hopper 19 It is positioned at the bottom of fin panel casing burner hearth 3.Ash dropping hopper 19 is connected with mucking machine 20.
Fin panel casing burner hearth 3 is to be surrounded the solid space for fuel combustion by furnace wall.The furnace wall of the bottom of burner hearth 3 Become narrow gradually, be possible to prevent the junction dust stratification bottom the furnace wall of fin panel casing burner hearth 3 and fin panel casing burner hearth 3.
Down-comer 4 connects with described upper collecting chamber 7 and lower header 12 respectively with in the two ends of fin panel casing.Top header 6 With the top that upper collecting chamber 7 is arranged on fin panel casing burner hearth 3, top header 6 is passed through to connect vapour communicating pipe 8 with upper collecting chamber 7.Lower header 12 bottoms being arranged on fin panel casing burner hearth 3.The burner hearth part of coal water slurry boiler uses vertical corner tube type structure, and corner is arranged 4 down-comers 4.Top header 6 upper collecting chamber 7 and lower header 12 are used for collecting or distributing soda pop working medium, reduce the conveying of working medium even Adapter road, reduces the number of aperture of drum, thus is conducive to improving the security performance of drum.
Drum 5 is in order to carry out steam-water separation and steam purification in coal water slurry boiler, and composition water-flow circuit also stores pot The cylindrical pressure vessel of water, also known as drum.Primarily serve the purpose of receiving economizer water, carry out steam-water separation and supply to closed circuit Water, carries saturated vapor to superheater.Drum 5 has certain water yield, there are the savings of certain heat and working medium, in operating mode Vapour pressure pace of change can be slowed down during variation, play certain cushioning effect when feedwater and load short time are inharmonious.Drum fills Having interior arrangement, to carry out steam-water separation, steam clean, water treatment, continuous blowdown, nationality is to ensure steam quality.
Upper collecting chamber 7, top header 6, vapour communicating pipe 8, lower header 12, the fin panel casing 3 of burner hearth and 4 down-comers 4 are constituted The water circulation system closed.Upper collecting chamber 7 is connected with vapour communicating pipe 8 with top header 6, is concurrently accessed drum 5, and steam water interface is from film The heating surface of formula water-cooling wall ascends into upper collecting chamber 7, and soda pop pre-separation occurs in upper collecting chamber 7, and steam is through soda pop fairlead 5 The air space on drum 5 top is entered to top header 6.All access at the high water level of drum 7 due to upper collecting chamber 7, then steam does not has Being directly accessed drum 5 by hydrospace, thus avoid the generation of foam, the steam adding entrance drum 5 has carried out pre- Separate, substantially increase the quality of steam.Water after upper collecting chamber 7 inner soda pop pre-separation flows into lower header 12 from 4 down-comers 4, Enter back in fin panel casing, form water circulation.
Burnout degree import 11 is positioned at the middle part of fin panel casing burner hearth 3, and the quantity of burnout degree import is that two rows are multiple, is entered Wind is used for ensureing that burner hearth has sufficient oxygen to burn with fuel reaction.
High temperature convection bank 15 and low temperature convection bank 14 use coil, and vertical in-line arrangement is in the outside of burner hearth, It is interconnected between high temperature convection bank 15 and low temperature convection bank 14, the end of the top of high temperature convection bank 15 and organic heat Carrier outlet header 16 connects, and the end below low temperature convection bank 14 connects with organic heat carrier import header 13.
Organic heat carrier import header 13, low temperature convection bank 14, high temperature convection bank 15 and organic heat carrier outlet collection Case 16 is sequentially communicated, and constitutes, by oil circulating pump and high-low position oil groove, the heating agent blood circulation closed, defeated by external pipe Delivering to heating equipment, the steam that period organic heat carrier produces can enter head tank by the high comb of each parts and enter greatly again Gas.The flow process low in and high out of organic heat carrier, will not pneumatosis in low temperature convection bank 14, high temperature convection bank 15, it is to avoid low Temperature convection bank 14, high temperature convection bank 15 produce hot-spot.Described high temperature convection bank (15), described low temperature convection bank (14) arrange by the flue gas discharge direction of described coal water slurry boiler.
Operation principle of the present utility model is as follows:
Water-coal-slurry borrows compressed air to spray into stable burning room 2 by above two burners 1, heats through air preheater meanwhile After high temperature air be mixed into stable burning room 2 also into burner 1 and water-coal-slurry and carry out fierce suspension combustion, simultaneously in burner hearth Arrange two-stage over-fire wind inlet, it is ensured that burner hearth has sufficient oxygen to burn with fuel reaction.Fire at fin panel casing burner hearth Burn the crust block pipe exit turnover 180 ° above fin panel casing burner hearth of the high-temperature flue gas after heat exchange and be downwardly into high temperature convection current Pipe 15 carries out heat convection, then carries out heat convection vertically down into low temperature convection tube 14, and flue gas enters back into air preheater 18 and economizer 17 carry out heat exchange, after enter flue gas purification system.In flue gas purification system, the solid particle in flue gas is by clearly Remove.Boiler combustion required air and boiler feedwater are added by the waste heat that economizer 17 and empty preheater 18 may utilize flue gas Heat, the clean preheated air after air preheater heats sprays into burner hearth from two burners 1 again, the heat after economizer heats Water enters drum, thus reaches to recycle and energy-conservation purpose.
As further improvement of the utility model, burner hearth is formed around soot blower for boiler hearth, can remove burner hearth film-type water-cooling Dust stratification on wall heating surface.Strength soot blower is set at cleaning door, can remove timely and effectively on convection bank coil pipe Dust stratification.
Further improve as of the present utility model, use grading combustion technology, be provided with two row's burnout degree in burner hearth and enter Mouthful, whole uniform temperature fields, can effectively stop burner hearth coking and reduce the generation of nitrogen oxides.
Coal water slurry boiler of the present utility model at least has the advantage that
In coal water slurry boiler of the present utility model, coal water slurry boiler includes fin panel casing and convection bank, convection bank Connect with organic heat carrier header.Coal water slurry boiler of the present utility model provide simultaneously steam hot water, organic heat carrier two kinds Medium.The dual-purpose 〃 of " mono-stove, can provide the user with " steam and organic heat carrier 〃 two media simultaneously.Economizer, drum, decline Pipe, header, vapour communicating pipe and burner hearth fin panel casing constitute a boiler circuit closed;Import and export header, high and low temperature pair Flowing bundle constitutes a heat medium system closed;Two systems are non-interference, and therefore, this type of furnace can provide steam and organic simultaneously Heat carrier two media is to user's designated equipment.
In one embodiment of coal water slurry boiler of the present utility model, using vertical single chamber structure, whole burner hearth is in falling " L " shape.Due in water-coal-slurry containing 30~the moisture of 40%, after water-coal-slurry sprays into combustor, need to first evaporate moisture therein Rear just can be ignited.This type of furnace uses single chamber structure, and the stable burning room arranging certain length in the front portion of burner hearth (is also named and ignites Room, length is different according to the calorific value difference of slurry), the both sides of stable burning room and top are by baking heat, and the furnace wall of high temperature will be entered The water-coal-slurry entering burner hearth carries out hyperthermia radiation, and in the moment through stable burning room, the moisture in water-coal-slurry evaporates rapidly and obtains Waste heat, so that it is guaranteed that light a fire successfully and stablize burning;Burner hearth is high, because of burner front wall collocation, after flame elder generation level walks one section Vertically upward, therefore furnace flame is inverted "L" shaped, and flue gas flow is up to more than 8 meters, extends the burning time of water-coal-slurry, can Guarantee full combustion of fuel and burn, thus the thermal efficiency of boiler can be improved.
In one embodiment of coal water slurry boiler of the present utility model, burner hearth heated portion uses film water cold wall structure, Body of heater uses corner tube type structure furnace heating surface to use film water cold wall structure, and furnace wall has only to insulation material, integral sealing, guarantor Warm nature can be good, leaks out few;Body of heater uses vertical corner tube type structure to arrange, 4 heavy caliber down-comers are arranged in corner, it is not necessary to separately set Supporting steel frame, steel consumption is low;Boiler uses vertical structure, and drum height is higher, thus boiler water cycle pressure reduction is big, safe water circulation Reliably.
In one embodiment of coal water slurry boiler of the present utility model, the preposition burner of burner is two, in horizontal cloth Put.Double burner is arranged and is advantageous in that each burner can individually control, and is greatly improved the stability of burning and the tune of load Joint performance, can use two or more fuel simultaneously.Burner is preposition, flame elder generation level walk one section after vertically upward, thus can Extend flue gas flow further, it is ensured that full combustion of fuel.
In one embodiment of coal water slurry boiler of the present utility model, heating agent circulation safe is reliable.The high/low temperature of this type of furnace Convection bank is mainly used for heated organic heat carrier, owing to the high and low temperature convection tube of heating agent process uses low in and high out Form, not gas collection in heat pipe, do not result in hot-spot, connecting tube is arranged on outside flue, is not heated, therefore heating agent circulation Safe and reliable.
In one embodiment of coal water slurry boiler of the present utility model, coal water slurry boiler compact overall structure, profile are arranged Simply, floor space is little.Owing to the boiler of this type can provide steam and organic heat carrier two media simultaneously, those are needed Avoiding the need for going up the boiler of two kinds of models for the user of two media, corresponding rear-mounted installation also has only to one simultaneously Overlapping the most permissible, this is advantageous for integral arrangement, is greatly saved land area.
In one embodiment of coal water slurry boiler of the present utility model, coal water slurry boiler includes: fin panel casing burner hearth, combustion Burner, convection bank.Drum, header, fin panel casing, down-comer, convection current is included at coal water slurry boiler of the present utility model Tube bank and organic heat carrier import and export header, drum, header, fin panel casing, and down-comer constitutes the boiler circuit closed, convection current Restrain and connect with organic heat carrier import and export header, constitute the heating agent blood circulation closed.Coal water slurry boiler of the present utility model Steam and organic heat carrier two media can be provided simultaneously.
Above, it is only preferred embodiment of the present utility model, not this utility model is made any pro forma limit System, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model, any is familiar with basis Technical professional, in the range of without departing from technical solutions of the utility model, when the technology contents of available the disclosure above is made Going out a little change or be modified to the Equivalent embodiments of equivalent variations, as long as being without departing from technical solutions of the utility model content, depending on Any simple modification, equivalent variations and the modification made above example according to technical spirit of the present utility model, all still falls within In the range of technical solutions of the utility model.

Claims (10)

1. a coal water slurry boiler, comprising: fin panel casing burner hearth (3), burner (1), drum (5), crust block pipe (10), collection Case (6,7,12), down-comer (4);Described drum (5), header (6,7,12), fin panel casing burner hearth (3), down-comer (4) are constituted The heat that boiler circuit is used for absorbing in described fin panel casing burner hearth (3) manufactures steam, it is characterised in that described water-coal-slurry pot Stove also includes, convection bank, organic heat carrier header (13,16);Described convection bank and described organic heat carrier header (13, 16) connection formation machine heat carrier recirculation system.
Coal water slurry boiler the most according to claim 1, it is characterised in that: described fin panel casing burner hearth (3) is by membrane type water Cold wall forms.
Coal water slurry boiler the most according to claim 1, it is characterised in that: described convection bank is coil.
Coal water slurry boiler the most according to claim 1, it is characterised in that: described convection bank includes high temperature convection bank (15) and low temperature convection bank (14), organic heat carrier header (13,16) includes organic heating medium outlet header (16), You Jire Carrier import header (13), described convection bank is used for heated organic heat carrier.
Coal water slurry boiler the most according to claim 1, it is characterised in that: it is provided with two rows in the middle part of described fin panel casing burner hearth Burnout degree import (11).
Coal water slurry boiler the most according to claim 1, it is characterised in that: the stove of described fin panel casing burner hearth (3) bottom Wall becomes narrow gradually.
Coal water slurry boiler the most according to claim 4, it is characterised in that: described high temperature convection bank (15), described low temperature Convection bank (14) is arranged by the flue gas discharge direction of described coal water slurry boiler.
Coal water slurry boiler the most according to claim 1, it is characterised in that: described burner (1) is positioned at described film-type water-cooling In the middle part of the front wall of wall.
Coal water slurry boiler the most according to claim 1, it is characterised in that: described fin panel casing is formed around soot blower.
10. according to the arbitrary described coal water slurry boiler of claim 1-9, it is characterised in that: described burner (1) horizontal direction sets Put.
CN201620431427.1U 2016-05-13 2016-05-13 A kind of coal water slurry boiler Active CN205717151U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11252873B2 (en) 2017-03-21 2022-02-22 Jiangsu University Self-adaptive control system for feed opening degree of round baler, and control method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11252873B2 (en) 2017-03-21 2022-02-22 Jiangsu University Self-adaptive control system for feed opening degree of round baler, and control method therefor

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Address after: Hangzhou City, Zhejiang province 311115 Pingyao Town, Yuhang District of Guangzhou Road No. 1

Patentee after: Hangzhou environmental protection Polytron Technologies Inc

Address before: Hangzhou City, Zhejiang province 311115 Pingyao Town, Yuhang District of Guangzhou Road No. 1

Patentee before: Hangzhou Juneng Boiler Co., Ltd.