CN107676762A - It is a kind of suitable for the novel horizontal boiler of ultra supercritical Large Copacity coal unit and its arrangement of unit - Google Patents
It is a kind of suitable for the novel horizontal boiler of ultra supercritical Large Copacity coal unit and its arrangement of unit Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims description 52
- 238000005192 partition Methods 0.000 claims description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003303 reheating Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001067 superalloy steel Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B15/00—Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
-
- 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 or dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details or component parts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
It is a kind of suitable for the novel horizontal boiler of ultra supercritical Large Copacity coal unit and its arrangement of unit, belong to technical field of power generation.The technical characterstic of patent of the present invention is：The height of boiler is reduced by using horizontal boiler, so as to reduce high-temperature pipe to the length of steam turbine, the thermal loss and the pressure loss of pipeline is reduced, improves unit efficiency.Novel horizontal boiler includes burner hearth, horizontal flue and back-end ductwork, and burner hearth is horizontally disposed and is connected together with horizontal flue, and back-end ductwork is arranged vertically and is installed on horizontal flue rear portion.Boiler and the possible arrangements of Turbo-generator Set have three kinds:1 Turbo-generator Set low position is in the side of horizontal boiler, and the hot outlet header of close boiler；A 2 Turbo-generator Set high positions are arranged in the side of horizontal boiler, and boiler hot outlet header close to and in equal height；3 Turbo-generator Sets are arranged in above the steel construction of horizontal boiler, and close to the hot outlet header of boiler.
Description
Technical field
The present invention relates to a kind of New-type boiler suitable for Large Copacity coal unit and its arrangement knot of Turbo-generator Set
Structure, and in particular to a kind of suitable for the New-type boiler of ultra supercritical Large Copacity coal unit and its arrangement knot of Turbo-generator Set
Structure, belong to technical field of power generation.
Background technology
Turbo-generator Set experienced the development course of more than 100 years as the core technology of thermal power generation.In order to save combustion
Material and environmental protection, the operational factor of unit have passed through constantly lifting so as to improve unit cycle efficieny.Recent development is
It is adapted to the Large Efficient generating set tower boiler and П type boilers of China's economic development and environmental requirement all to become more and more higher.
Average length of the single jet chimney from boiler to steam turbine has just exceeded 160 meters.The advanced efficient unit utilization of ultra supercritical is higher
Vapor (steam) temperature (>=620 DEG C) and pressure, make the heat of pipeline and pressure loss problem more prominent.Double reheat Cycle Unit
Turn into the major technique of the efficient extra-supercritical unit of a new generation, the pipeline system of unit again using the reheater of two pressure ratings
System comes and goes 3 times between boiler and steam turbine.
Figure 10 show existing typical 1000MW grades tower boiler and the conventional cloth of double reheat Turbo-generator Set
Put schematic diagram.Ultra-high pressure cylinder in Turbo-generator Set, high pressure cylinder, intermediate pressure cylinder and two low pressure (LP) cylinders, five cylinder single shafts are arranged in steam turbine
In room.There is following pipeline between boiler and steam turbine：
1. single about 160 meters from superheater outlet to the main steam line ultra-high pressure cylinder import；
2. single about 190 meters of the low-temperature primary reheaing steam pipe of boiler is returned to from ultra-high pressure cylinder steam discharge；
3. single about 170 meters of the high temperature single reheat jet chimney of high pressure cylinder is exported to from single reheat device；
4. single about 180 meters of the low temperature double reheat jet chimney of boiler is returned to from high pressure cylinder steam discharge；
5. single about 170 meters of the high temperature double reheat jet chimney of intermediate pressure cylinder is exported to from secondary reheater.
Five kinds of pipelines between above steam turbine and boiler come for the boiler of conventional 600 DEG C of 1000MW grades vapor (steam) temperature
Say, every kind of at least to want 2, its external diameter is between 457mm to 960mm, and wall thickness is between 30mm to 115mm.For vapor (steam) temperature
In 600 DEG C or more of efficient boiler, the expensive heat-resisting alloy steel of high-temperature pipe 1,3,5.
Figure 11 show 1000MW grades П types boiler and the conventional arrangement schematic diagram of double reheat Turbo-generator Set, this
Kind arrangement equally uses five kinds of very long big pipe-line systems.
On the one hand the major diameter of 600 DEG C of ratings above and posted sides pipeline are expensive, are on the other hand the system resistances of pipeline
Power and thermal loss increase, reduce the acting ability of steam turbine, and make HTHP parameter and the theoretical effect of double reheat system
Benefit is partly swallowed.The end of the nineties in last century, China and the country such as beautiful, day, European Union have formulated of future generation efficiently super face respectively
The development plan of boundary's unit.These plans are all the single reheat of material and double reheat machine based on nickel-based superalloy steel
Group.The price of the Chlorimet steel of current 700 DEG C of grades will make boiler, and the increased cost of investment of steam turbine and pipeline institute is higher than
This available benefit of unit.As can be seen here, under current technology condition, material condition and conventional design layout, steamer
There is the contradiction of input and income for the raising of generating set efficiency.This, which also turns into, restricts a new generation's efficiently extra-supercritical unit hair
The bottleneck of exhibition.Under this background, there is an urgent need to develop new boiler design for new breakthrough.
The content of the invention
The brief overview on the present invention is given below, to provide on the basic of certain aspects of the invention
Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the pass of the present invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form,
In this, as the preamble in greater detail discussed later.
In consideration of it, the invention provides a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit and its
The arrangement of unit, it is therefore an objective to the height of boiler is reduced by using horizontal boiler, is steamed so as to reduce main steam and reheating
The length and cost in steam pipe road, and the thermal loss and the pressure loss of pipeline are reduced, unit efficiency is further improved, this technology
It is applied in the design of 700 DEG C of boilers of new generation, its cost can be effectively reduced, increased the benefit, is advantageous to break restriction newly
The bottleneck of the efficient extra-supercritical unit development of a generation.The corresponding unit arrangement that the present invention provides, make the advantage of horizontal boiler
Given full play to.
Scheme one：The invention provides a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit, its
Including burner hearth, horizontal flue and back-end ductwork, the burner hearth is horizontally disposed and is connected together with horizontal flue, the back-end ductwork
It is arranged vertically and is installed on horizontal flue rear portion.
Further：For single reheat boiler, the whole height of the burner hearth and the height of back-end ductwork are suitable；In it
Order of portion's heating surface along flue gas direction is pendant superheater, finishing superheater, final reheater and the low temperature in back-end ductwork
Reheater, low temperature superheater and economizer, temperature-adjusting baffle that the steam temperature of single reheat device is exported by back-end ductwork control.
Further：For double reheat boiler, the whole height of the burner hearth and the height of back-end ductwork are suitable；In it
Order of portion's heating surface along flue gas direction is preceding screen superheater, Late reworking, finishing superheater, a final reheater, two
Penult reheater, and a low-temperature reheater in back-end ductwork, secondary low-temperature reheater and economizer；Secondary reheater
Temperature-adjusting baffle that steam temperature is exported by back-end ductwork and flue gas recirculation control.
Further：Number row's burner is arranged on the front wall of burner hearth, number is vertically also arranged in the both walls of burner hearth
Burner is arranged, the burner on side wall has a certain distance apart from front wall；The downstream of burner on the side wall of burner hearth, arrangement
One row or two row's after-flame air ports.
Further：The boiler circuit of the burner hearth and horizontal flue is successively by the first loop, second servo loop and the 3rd
Loop, the first loop, second servo loop and the tertiary circuit are flowed up using vertical tube coil and working medium, the bottom in the first loop
Portion is disposed with the first circuit inlet header, and the top layout in the first loop has the first circuit outlet header, the first circuit outlet collection
Case connects with the first loop header, and the first loop header passes through the first loop down-comer and second servo loop import header
Connection, second servo loop import header are arranged in the bottom of second servo loop, and the top layout of second servo loop has second servo loop outlet collection
Case, second servo loop outlet header connect with second servo loop header, and the first loop header also distributes a part of flow and arrived
Furnace roof pipe import header, a part of this part working medium along furnace roof pipe to second servo loop header, and second servo loop, second
Loop header is connected by second servo loop down-comer with tertiary circuit import header, and tertiary circuit import header is arranged in
The bottom in three loops, the top layout of tertiary circuit have tertiary circuit outlet header, tertiary circuit outlet header and tertiary circuit
Header connects, and second servo loop header is also the import header of horizontal flue roof tube, distributes a part of working medium along top
Canopy pipe is a part for tertiary circuit to tertiary circuit header, and tertiary circuit header connects with separator inlet pipeline
Logical, separator outlet pipeline connects with back-end ductwork import header, and working medium flows down along back-end ductwork front-back wall enters annular header,
Back-end ductwork outlet header is flowed upwardly to from back-end ductwork annular header working medium along side wall, back-end ductwork outlet header enters through connecting tube
Enter hanging pipe and upper partition wall import header, from hanging pipe and upper partition wall import header, a part of working medium flows down along hanging pipe to be entered
Pipe outlet and lower partition wall import header are hung, then enters primary superheater import header, another part working medium through lower partition wall pipe
Along upper partition wall downstream to primary superheater import header.
Scheme two：The invention provides a kind of novel horizontal boiler and vapour suitable for ultra supercritical Large Copacity coal unit
The arrangement of turbine generator group, the horizontal boiler in this programme are the horizontal boiler illustrated in scheme one,
Turbo-generator Set low position is in the side of horizontal boiler, and the hot outlet header of close boiler.
Scheme three：The invention provides a kind of novel horizontal boiler and vapour suitable for ultra supercritical Large Copacity coal unit
The arrangement of turbine generator group, the horizontal boiler in this programme are the horizontal boiler illustrated in scheme one,
A Turbo-generator Set high position is arranged in the side of horizontal boiler, and boiler hot outlet header close to and equal
Highly.
Scheme four：The invention provides a kind of novel horizontal boiler and vapour suitable for ultra supercritical Large Copacity coal unit
The arrangement of turbine generator group, the horizontal boiler in this programme are the horizontal boiler illustrated in scheme one,
Turbo-generator Set is arranged in above the steel construction of horizontal boiler, and close to the hot outlet header of boiler.
Beneficial effect：
The present invention reduces the height of boiler by using horizontal boiler, so as to reduce main steam and reheaing steam pipe
Length and cost, and the thermal loss and the pressure loss of pipeline are reduced, unit efficiency is further improved, this technology is applied to
In the design of 700 DEG C of boilers of new generation, its cost can be effectively reduced, is increased the benefit, be advantageous to break restriction a new generation height
Imitate the bottleneck of extra-supercritical unit development.The corresponding unit arrangement that the present invention provides, enables the advantage of horizontal boiler to fill
Distribution is waved.
Brief description of the drawings
Fig. 1 is the layout drawing of horizontal single reheat boiler；
Fig. 2 is the layout drawing of horizontal double reheat boiler；
Fig. 3 is carbonated drink working medium flow schematic diagram of the horizontal boiler burner hearth to back-end ductwork；
Fig. 4 is arrangement schematic diagram-plan view of horizontal boiler and low level Turbo-generator Set；
Fig. 5 is arrangement schematic diagram-front view of horizontal boiler and low level Turbo-generator Set；
Fig. 6 is arrangement schematic diagram-plan view of horizontal boiler and side high position Turbo-generator Set；
Fig. 7 is arrangement schematic diagram-front view of horizontal boiler and side high position Turbo-generator Set；
Fig. 8 is arrangement schematic diagram-plan view of horizontal boiler and furnace roof high position Turbo-generator Set；
Fig. 9 is arrangement schematic diagram-front view of horizontal boiler and furnace roof high position Turbo-generator Set；
Figure 10 is tower boiler of the prior art and the conventional arrangement schematic diagram of double reheat Turbo-generator Set；
Figure 11 is П types boiler of the prior art and the conventional arrangement schematic diagram of double reheat Turbo-generator Set.
Marked in figure as follows：
1- burner hearths；2- horizontal flues；3- back-end ductworks；4- burners；5- pendant superheaters；6- finishing superheaters；7- ends
Level reheater；8- low-temperature reheaters；9- low temperature superheaters；10- economizers；11- temperature-adjusting baffles；Shield superheater before 12-；After 13-
Shield superheater；Final reheater of 15-；Bis- final reheaters of 16-；Low-temperature reheater of 17-；Bis- low temperature of 18- are again
Hot device；19- after-flames air port；21- economizer down-comers；22- the first circuit inlet headers；23- the first circuit outlet headers；24-
First loop header；The first loops of 25- down-comer；26- second servo loop import headers；27- second servo loop outlet headers；
28- second servo loop headers；29- second servo loop down-comers；30- tertiary circuit import headers；31- tertiary circuits outlet collection
Case；32- tertiary circuit headers；33- separator inlet pipelines；34- separator outlet pipelines；35- back-end ductworks annular collection
Case；36- back-end ductwork outlet headers；37- hangings pipe and upper partition wall import header；38- hanging pipe outlets and lower partition wall inlet header
Case；39- primary superheater import headers；40- furnace roof pipe import headers；41- back-end ductwork import headers；The loops of A- first；B-
Second servo loop；C- tertiary circuits；D- novel horizontal boilers；E- Turbo-generator Sets；F- main steam lines；G- double reheat hot arcs
Pipeline；H- single reheat hot arc pipelines；I- double reheat cold segment pipes；J- single reheat cold segment pipes；K- reheating hot pipes；
L- reheating cold segment pipes；M- hot outlet headers；N- reheater import headers.
Embodiment
The one exemplary embodiment of the present invention is described hereinafter in connection with accompanying drawing.For clarity and conciseness,
All features of actual embodiment are not described in the description.It should be understood, however, that developing any this actual implementation
It must be made during example much specific to the decision of embodiment, to realize the objectives of developer, for example, symbol
Those restrictive conditions related to system and business are closed, and these restrictive conditions may have with the difference of embodiment
Changed.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to having benefited from the present invention
For those skilled in the art of disclosure, this development is only routine task.
Herein, it is also necessary to which explanation is a bit, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings
It illustrate only and according to the closely related apparatus structure of the solution of the present invention and/or processing step, and eliminate and the present invention
The little other details of relation.
Embodiment 1, it is applied to ultra supercritical Large Copacity fire coal the embodiment provides a kind of as illustrated in the accompanying drawings from 1 to 3
The novel horizontal boiler of unit, it includes burner hearth 1, horizontal flue 2 and back-end ductwork 3, the burner hearth 1 it is horizontally disposed and with level
Flue connects together, and the back-end ductwork is arranged vertically and is installed on horizontal flue rear portion.It is arranged such, the whole height of boiler
About 50% is reduced than п types stove.
More specifically：For single reheat boiler, the whole height of the burner hearth 1 and the height of back-end ductwork 3 are suitable,
The height is quite highly equal or with poor compared with low height；Its order of internal heating surface along flue gas direction is screen formula mistake
Hot device 5, finishing superheater 6, final reheater 7 and the low-temperature reheater 8 in back-end ductwork, low temperature superheater 9 and economizer 10,
Temperature-adjusting baffle 11 that the steam temperature of single reheat device is exported by back-end ductwork controls.
More specifically：For double reheat boiler, the whole height of the burner hearth 1 and the height of back-end ductwork 3 are suitable,
The height is quite highly equal or with poor compared with low height；Its order of internal heating surface along flue gas direction shielded before being
Hot device 12, Late reworking 13, finishing superheater 6, a final reheater 15, secondary final reheater 16, and in afterbody cigarette
Low-temperature reheater 17 in road, secondary low-temperature reheater 18 and economizer 10；The steam temperature of secondary reheater is gone out by back-end ductwork
Mouthful temperature-adjusting baffle 11 and flue gas recirculation control.
More specifically：Number row's burner 4 is arranged on the front wall of boiler, number arranges burner laterally and vertically spacing and п types
Stove is suitable；Number row's burner, the burner distance on side wall are vertically also arranged when being necessary in the both walls of boiler
Front wall will have enough distances, avoid the burner on flame and front wall from interfering；The downstream of burner on boiler side wall,
Arrange a row or two row's after-flame air ports 19.Coal pulverizer is arranged in before boiler.Burning can be verified according to the thinking of п type stoves
Device region thermic load is to ensure the reasonable Arrangement of burner.Burner hearth is in the horizontal direction from side wall burner to the distance shielded
The after-flame to be considered during design height.After-flame height will ensure enough fuel tail-off times and reasonably to shield flue-gas temperature,
Its design standard is identical with П type stoves.The definition of furnace outlet and traditional П types stove keep constant, to the temperature of flue gas here
Degree requires also consistent with traditional П types stove.
The п types stove is prior art, the HG-2167/29.3-PM11 for specifically having Harbin Boiler Co., Ltd.
With the boiler of the model such as HG-2764/33.5/605/623/623-YM2.The horizontal boiler for designing to obtain according to above principle, knot
Fruit shows that its burner hearth area and volume can increased, and burner region thermic load and volume thermic load all can be reduced correspondingly,
Be advantageous to anti-coking and reduce NOx emission, projected area thermic load is very close to former П types stove so that the more former П types stove of burner hearth heat absorption
Difference is smaller, can control furnace outlet vapor (steam) temperature.
The burner hearth 1 is due to its shape, it is impossible to using spirally-wound tubes, can only use vertically arranged pipe, whole burner hearth needs
Want multiple loops (working medium along vertical tube rise times), in order to reduce pressure drop, be best suitable for using low-quality flow vertical tube coil (see
Fig. 3), separator can reasonably be chosen at a certain vertical tube coil outlet, cloth in the position of boiler circuit according to the heat absorption of burner hearth
Put on rear side of boiler.
More specifically：The boiler circuit of the burner hearth and horizontal flue successively by the first loop A, second servo loop B and
Tertiary circuit C, the first loop A, second servo loop B and tertiary circuit C are flowed up using vertical tube coil and working medium, and first
The bottom in loop is disposed with the first circuit inlet header 22, and the top layout in the first loop has the first circuit outlet header 23, the
Primary Ioops outlet header 23 connects with the first loop header 24, and the first loop header 24 passes through the first loop down-comer
25 connect with second servo loop import header 26, and second servo loop import header 26 is arranged in the bottom of second servo loop, second servo loop
Top layout has second servo loop outlet header 27, and second servo loop outlet header 27 connects with second servo loop header 28, and first
Loop header 24 also distributes a part of flow to furnace roof pipe import header 40, and this part working medium is along furnace roof pipe to second servo loop
Header 28, and a part for second servo loop, second servo loop header 28 pass through second servo loop down-comer 29 and the 3rd
Circuit inlet header 30 connects, and tertiary circuit import header 30 is arranged in the bottom of tertiary circuit, the top layout of tertiary circuit
There is tertiary circuit outlet header 31, tertiary circuit outlet header 31 connects with tertiary circuit header 32, and second servo loop collects
The import header of header 28 and horizontal flue roof tube, a part of working medium is distributed along roof tube to tertiary circuit header
32, it is a part for tertiary circuit, tertiary circuit header 32 connects with separator inlet pipeline 33, separator outlet pipeline
34 connect with back-end ductwork import header 41, and working medium flows down along back-end ductwork front-back wall enters annular header 35, from back-end ductwork
The working medium of annular header 35 flows upwardly to back-end ductwork outlet header 36 along side wall, and back-end ductwork outlet header 36 enters through connecting tube to be hung
Hanging tube and upper partition wall import header 37, from hanging pipe and upper partition wall import header 37, a part of working medium flows down along hanging pipe to be entered
Pipe outlet and lower partition wall import header 38 are hung, then enters primary superheater import header 39, another work through lower partition wall pipe
Matter is along upper partition wall downstream to primary superheater import header 39.
Specific medium moves towards：Feed water and decline after the economizer 10 in the bottom of back-end ductwork 3 along the economizer of both sides
Pipe 21 includes front wall to the anterior import header 22 assignment of traffic to first group of vertical tube coil of burner hearth 1, first group of vertical tube coil
With part side wall, export in furnace roof, through header 23, to after converging header 24, the furnace roof that a part is assigned to front side enters tedge
Mouthful header 40 enters furnace roof pipe, another part along burner hearth side wall downwards by distribution pipe enter second group of vertical tube coil import header and
Furnace hopper rear portion header 26；Working medium is assigned to the 3rd group of vertical tube coil by the flow that second group of vertical tube coil repeats first group of pipeloop
Import header 30, and furnace roof pipe outlet working medium converges the 3rd group of pipeloop of and includes horizontal flue roof tube, side wall pipe and lower tube
Son.Three parts working medium all flows to the outlet header 32 positioned at back-end ductwork front wall.Working medium is entered by connecting tube from here to be separated
Device steam comes out to back-end ductwork front wall header 41 from separator and enters front-back wall pipe downstream to base circle header 35, so
Enter side wall pipe upstream afterwards and enter upper outlet header 36.Enter the edge of hanging pipe import header 37 from outlet header through connecting tube
Hanging pipe and partition wall pipe flow down, wherein hanging pipe flow enters upper along partition wall after bottom partition wall header 38, and upper partition wall
Flow converges into primary superheater import header 39.Then in turn through primary superheater, shielded and end is crossed and arrives main steam pipe
Road.If double reheat boiler, separator will be located at the outlet of afterbody bag wall, shield before the steam entrance of separator outlet,
Shielded after after and end enters main steam line later, reheated steam enters the one-level reheater import positioned at back-end ductwork bottom
Header, through horizontal and vertical one-level reheater, after intermediate header and attemperator, into the final reheater in horizontal flue
To reheating hot pipe, the arrangement of reheater and typical П types stove indistinction.
Embodiment 2, it is applied to ultra supercritical Large Copacity fire coal the embodiment provides a kind of as shown in accompanying drawing 4-5
The novel horizontal boiler of unit and the arrangement of Turbo-generator Set, the horizontal boiler in the present embodiment are to be explained in embodiment 1
The horizontal boiler stated,
Steam turbine generator is arranged in conventional height.But in order to reduce high-temperature pipe length, Turbo-generator Set is arranged in
The side of horizontal boiler, and close to the hot outlet header of boiler.At this moment high-temperature pipe is from outlet header along horizontal Vertical Square again
To entrance low level Turbo-generator Set.For 1000MW units, the length about 40-50 rice of single high-temperature pipe, it is
The 1/3 of prior art.Cold pipeline again and feedwater piping are from low level Turbo-generator Set to the import header in back-end ductwork
Length also substantially shorten.
Embodiment 3, it is applied to ultra supercritical Large Copacity fire coal the embodiment provides a kind of as shown in accompanying drawing 6-7
The novel horizontal boiler of unit and the arrangement of Turbo-generator Set, the horizontal boiler in the present embodiment are to be explained in embodiment 1
The horizontal boiler stated,
A Turbo-generator Set high position is arranged in the side of horizontal boiler, and horizontal boiler hot outlet header close to and
Equal height.At this moment high-temperature pipe enters steam turbine in the horizontal direction from outlet header.For 1000MW units, single high temperature
The length of pipeline is about the 1/5 of prior art in 20-30 rice.Cold pipeline again and feedwater piping are from steam turbine to positioned at afterbody cigarette
The length of import header in road also substantially shortens.The steel structure support and basic engineering of the steam turbine generator of this high-order arrangement
Problem has been resolved, and has implemented that project is underway to be used cooperatively with tower-type furnace or П type stoves in China.By making
, also can be significantly with traditional tower height compared with П type boilers, reduce the steam turbine generator of high-order arrangement with horizontal boiler
Degree reduces the cost on steam turbine generator steel structure support and basis.
Embodiment 4, it is applied to ultra supercritical Large Copacity fire coal the embodiment provides a kind of as shown in accompanying drawing 8-9
The novel horizontal boiler of unit and the arrangement of Turbo-generator Set, the horizontal boiler in the present embodiment are to be explained in embodiment 1
The horizontal boiler stated,
Turbo-generator Set is arranged in above the steel construction of horizontal boiler, and close to the hot outlet header of boiler.At this moment
From outlet header, vertically horizontal direction enters steam turbine to high-temperature pipe again.For 1000MW units, single high temperature pipe
The length in road is about the 1/5 of prior art in 20-30 rice.Cold pipeline again and feedwater piping are from steam turbine to positioned at back-end ductwork
In the length of import header also substantially shorten.The steel structure support and basic engineering of the steam turbine generator of this high-order arrangement are asked
Topic has been resolved, and has implemented that project is underway to be used cooperatively with tower-type furnace or П type stoves.By using horizontal pot
Stove, with traditional tower height compared with П type boilers, reduce the steam turbine generator of high-order arrangement, vapour can also be greatly lowered
Turbine generator steel structure support and the cost on basis.
Although disclosed embodiment is as above, its content is only to facilitate understand the technical side of the present invention
Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not
On the premise of departing from disclosed core technology scheme, any modification can be made in the form and details of implementation and is become
Change, but the protection domain that the present invention is limited, the scope that must be still limited by appended claims are defined.
Claims (8)
- A kind of 1. novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit, it is characterised in that：Including burner hearth (1), Horizontal flue (2) and back-end ductwork (3), the burner hearth (1) is horizontally disposed and is connected together with horizontal flue, the back-end ductwork It is arranged vertically and is installed on horizontal flue rear portion.
- 2. a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit according to claim 1, it is special Sign is：For single reheat boiler, the whole height of the burner hearth (1) and the height of back-end ductwork (3) are suitable；Inside it by Order of the hot face along flue gas direction is pendant superheater (5), finishing superheater (6), final reheater (7) and in back-end ductwork Low-temperature reheater (8), low temperature superheater (9) and economizer (10), the temperature adjustment that the steam temperature of single reheat device is exported by back-end ductwork Baffle plate (11) controls.
- 3. a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit according to claim 1, it is special Sign is：For double reheat boiler, the whole height of the burner hearth (1) and the height of back-end ductwork (3) are suitable；Inside it by Order of the hot face along flue gas direction is preceding screen superheater (12), and Late reworking (13), finishing superheater (6), a penult is again Hot device (15), secondary final reheater (16), and a low-temperature reheater (17) in back-end ductwork, secondary low-temperature reheater And economizer (10) (18)；Temperature-adjusting baffle (11) that the steam temperature of secondary reheater is exported by back-end ductwork and flue gas recirculation are controlled System.
- 4. a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit according to Claims 2 or 3, its It is characterised by：Number row's burner (4) is arranged on the front wall of burner hearth, number row's burning is vertically also arranged in the both walls of burner hearth Device (4), the burner on side wall have a certain distance apart from front wall；The downstream of burner on the side wall of burner hearth, arrangement one Row or two row's after-flame air ports (19).
- 5. a kind of novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit according to claim 4, it is special Sign is：The boiler circuit of the burner hearth and horizontal flue is successively by the first loop (A), second servo loop (B) and tertiary circuit (C), first loop (A), second servo loop (B) and tertiary circuit (C) are flowed up using vertical tube coil and working medium, and first The bottom in loop is disposed with the first circuit inlet header (22), and the top layout in the first loop has the first circuit outlet header (23), the first circuit outlet header (23) connects with the first loop header (24), and the first loop header (24) passes through First loop down-comer (25) is connected with second servo loop import header (26), and second servo loop import header (26) is arranged in second time The bottom on road, the top layout of second servo loop have second servo loop outlet header (27), second servo loop outlet header (27) and second Loop header (28) connects, and the first loop header (24) also distributes a part of flow to furnace roof pipe import header (40), this part working medium is converged along furnace roof pipe to second servo loop header (28), and a part for second servo loop, second servo loop Collection header (28) is connected by second servo loop down-comer (29) with tertiary circuit import header (30), tertiary circuit import header (30) bottom of tertiary circuit is arranged in, the top layout of tertiary circuit has tertiary circuit outlet header (31), and tertiary circuit goes out Mouth header (31) connects with tertiary circuit header (32), and second servo loop header (28) is also horizontal flue roof tube Import header, a part of working medium is distributed along roof tube to tertiary circuit header (32), be a part for tertiary circuit, the 3rd Loop header (32) connects with separator inlet pipeline (33), separator outlet pipeline (34) and back-end ductwork import header (41) connect, working medium flows down along back-end ductwork front-back wall enters annular header (35), from back-end ductwork annular header (35) working medium Flow upwardly to back-end ductwork outlet header (36) along side wall, back-end ductwork outlet header (36) through connecting tube enter hanging pipe and on every Wall import header (37), from hanging pipe and upper partition wall import header (37), a part of working medium flows down along hanging pipe enters hanging pipe Outlet and lower partition wall import header (38), then enter primary superheater import header (39), another part work through lower partition wall pipe Matter is along upper partition wall downstream to primary superheater import header (39).
- A kind of 6. novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit described in claim 1-5 any one With the arrangement of Turbo-generator Set, it is characterised in that：Turbo-generator Set low position is in the side of horizontal boiler, and the hot outlet header of close boiler.
- A kind of 7. novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit described in claim 1-5 any one With the arrangement of Turbo-generator Set, it is characterised in that：A Turbo-generator Set high position is arranged in the side of horizontal boiler, and boiler hot outlet header close to and with contour Degree.
- A kind of 8. novel horizontal boiler suitable for ultra supercritical Large Copacity coal unit described in claim 1-5 any one With the arrangement of Turbo-generator Set, it is characterised in that：Turbo-generator Set is arranged in above the steel construction of horizontal boiler, and close to the hot outlet header of boiler.
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| CN201710897216.6A CN107676762A (en) | 2017-09-28 | 2017-09-28 | It is a kind of suitable for the novel horizontal boiler of ultra supercritical Large Copacity coal unit and its arrangement of unit |
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Application publication date: 20180209 |