CN107883368A - A kind of more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation - Google Patents
A kind of more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation Download PDFInfo
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- CN107883368A CN107883368A CN201710942553.2A CN201710942553A CN107883368A CN 107883368 A CN107883368 A CN 107883368A CN 201710942553 A CN201710942553 A CN 201710942553A CN 107883368 A CN107883368 A CN 107883368A
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- wall
- reheating
- inwall
- carbon dioxide
- supercritical carbon
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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
- F22B31/04—Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The present invention relates to a kind of more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, it includes burner hearth and flue, burner hearth is vertically arranged, the side wall of burner hearth is made up of cooling wall and reheating wall, cooling wall is located at below reheating wall, the middle part of cooling wall and lower area are provided with burner, hot wall is made up of single reheat wall and double reheat wall again, the terrain clearance of single reheat wall and double reheat wall is equal or close, and the classification of flue interior edge flow of flue gas direction is provided with superheater module and reheater module.Beneficial effects of the present invention are, then the novel in structural design of hot wall, on the premise of not increasing furnace height and being also not required to be horizontal by chamber design, realize three-level heat absorption and acting, the utilization rate of the energy is high；Be the single reheat wall and double reheat wall that particular combination may be selected by appropriate valve opening and closing, i.e. the heating surface area of single reheat wall and double reheat wall can adjust, therefore can flexible modulation hot working fluid again temperature, ensure that again the degree of superheat of hot working fluid is up to standard.
Description
Technical field
The invention belongs to advanced field of generating equipment, and in particular to a kind of supercritical carbon dioxide reheating coal fired power generation is cut more
Circle steam generator system.
Background technology
Because the discharge of the efficiency, reduction pollutant that improve generating set is an eternal topic, therefore some are new general
Ideo-motor Force system is paid close attention to.The physical property of supercritical carbon dioxide is special, and under identical burden requirement, work is used as using it
The electricity generation system of matter is smaller, more compact structure, can save floor occupying area, reduce cost, simultaneously because its energy density
It is bigger than water, it is more efficient as the steam generator system of working medium using supercritical carbon dioxide in the case of existing steel high temperature resistant level.
Under the background of carbon dioxide discharge-reduction, as collecting carbonic anhydride, research on utilization go deep into, it will help faced with super
Boundary's carbon dioxide is the development of the electricity generation system of working medium.Retrieve Patents and find that there is presently no collecting carbonic anhydride, profit
With the case being combined together with the electricity generation system using supercritical carbon dioxide as working medium, as patent 201610038208.1 is a kind of
Coal base supercritical carbon dioxide Brayton cycle double split flow efficient power generation system, a kind of 201510117556.3 Novel supercriticals two
Carbonoxide coal-burning boiler.
In supercritical carbon dioxide double reheat coal-fired electric generation furnace system implementation process, hot working fluid again sometimes be present
The problem of temperature overheating degree is not up to standard.For this problem, solution of the prior art is as follows：Patent of invention
201610654055.3 a kind of supercritical carbon dioxide Boiler radiation heated surface arrangement method, it is in hearth combustor lower disposed
Reheating working medium radiation heating-surface, the method for arranging main working medium radiation heating-surface in burner peripheral region and upper area, it is not
Foot part is：Can only realize that single reheat is done work, can not double reheat acting, and cascaded utilization of energy rate is low, causes energy
Amount wastes；A kind of Novel supercritical carbon dioxide coal-burning boiler of patent of invention 201510117556.3, its be horizontal furnace structure and
It arranges the attached wall radiation cooling heating surface of three ranks in burner hearth, and it is disadvantageous in that：On the one hand, three ranks is attached
The ratio of wall radiation cooling heating surface and position be it is certain, its be unable to burning inside flexible adaptation different load lower hearth and
Heat transfer situation, spirit can not be carried out to the degree of superheat deficiency problem of single reheat working medium and double reheat working medium under different load
Regulation living, on the other hand, horizontal furnace structure has the defects of its is intrinsic, flue gas stream bottom horizontal flow sheet and thermal current can be spontaneous upward,
So relative superiority or inferiority is low in flue-gas temperature on same section, temperature field actual distribution differs with design can be larger, and heat exchange is bad, by
The utilizing status in hot face is bad, while it must be drained using more powerful blower fan to flue gas, and energy consumption is higher.Therefore it is existing
There is the effective means for lacking in technology and solving reheating working medium degree of superheat problem not up to standard.
The content of the invention
For deficiency of the prior art, the present invention provides a kind of more circle of contact pots of supercritical carbon dioxide reheating coal fired power generation
Furnace system, it can carry out flexible modulation to single reheat working medium, the degree of heat of double reheat working medium, effectively to solve its overheat
The problem of degree is not up to standard.
Concrete technical scheme is as follows：
A kind of more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, including：Burner hearth and flue, burner hearth are vertical
Set, one end of flue connects with the top of burner hearth, had the feature that, the side wall of burner hearth is by cooling wall and reheating wall group
Into cooling wall is located at below reheating wall, and the middle part of cooling wall and lower area are provided with burner, then hot wall by single reheat wall
Formed with double reheat wall, the terrain clearance of single reheat wall and double reheat wall is equal or close, flue interior edge flow of flue gas
Direction classification is provided with superheater module and reheater module；
Hot wall by antetheca, rear wall, left wall, right wall and is arranged at by antetheca, rear wall, left wall, right wall enclosed area again
Inwall forms, and antetheca, rear wall, left wall, the upper and lower ends of right wall and inwall are each provided with independent header, single reheat wall by
In antetheca, rear wall, left wall, right wall and inwall any one, two or three and corresponding independent header composition.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, once
Hot wall is made up of antetheca, rear wall and inwall and corresponding independent header again, and double reheat wall is only by left wall and right wall and accordingly
Vertical header composition.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, once
Hot wall is made up of antetheca and left wall and corresponding independent header again, and double reheat wall is only by rear wall, right wall and inwall and accordingly
Vertical header composition.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, once
Hot wall is made up of antetheca, rear wall and left wall and corresponding independent header again, and double reheat wall is only by right wall and inwall and accordingly
Vertical header composition.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, overheat
Device module includes pendant superheater, high temperature superheater and the low temperature superheater set gradually along flow of flue gas direction, reheater mould
Block includes the high temperature reheater group and low-temperature reheater group set gradually along flow of flue gas direction, and high temperature reheater group includes parallel connection
The high temperature reheater and secondary high-temperature reheater set, low-temperature reheater group include a low-temperature reheater being arranged in series
With secondary low-temperature reheater.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, flue
It is made up of horizontal flue and vertical flue, the upper end of the both ends of horizontal flue respectively with burner hearth and vertical flue connects, horizontal cigarette
Pendant superheater, high temperature superheater and high temperature reheater group are provided with road, vertical flue is set gradually along flow of flue gas direction
There are gas baffle, economizer and air preheater, the side of gas baffle is provided with low temperature superheater, the opposite side of gas baffle
It is provided with low-temperature reheater group.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, once
High temperature reheater export and secondary high-temperature reheater export by independent pipeline and corresponding valve respectively with antetheca, after
Wall, left wall, right wall connect with five independent headers of inwall lower end, antetheca, rear wall, left wall, five of right wall and inwall upper end
Independent header is entered by the high pressure cylinder entrance and gas-turbine intermediate pressure cylinder of independent pipeline and corresponding valve respectively with gas-turbine
Mouth connection, the outlet of pendant superheater connects with the ultra-high pressure cylinder entrance of gas-turbine.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, cooling
It is 0.5L≤L that pipeline section is cooled down in wall in the length of vertical direction1＜ L, then in hot wall reheating pipeline section vertical direction length be 0
＜ L2≤ 0.5L, L are furnace height, L1To cool down pipeline section in cooling wall 1 in the length of vertical direction, L2For reheating in reheating wall 3
Length of the pipeline section in vertical direction.
The above-mentioned more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, also have the feature that, inwall
Middle reheating pipeline section is set in distance, and the compartment of reheating pipeline section in a lateral direction is away from for 2d in inwall<L3<5d, L3For in inwall
The compartment of reheating pipeline section in a lateral direction is away from d is the caliber of reheating pipeline section in inwall.
At least provided with two groups of burner groups, every group of burner in the middle part of cooling wall and/or lower area in the present invention
Organizing includes 4 burners, and 4 burners in every group of burner group form a flame circle of contact, the boiler provided in the present invention
Circle of contact quantity can be set according to the needs that burner hearth size and antetheca, rear wall, left wall, right wall heating surface are arranged in system.
The beneficial effect of such scheme is：
(1) novel in structural design of hot wall, including the single reheat wall and double reheat that terrain clearance is close or equal again
Wall, that is, along a vertical plane two parts (including but is not limited to this kind of situation) will be split into by hot wall again, do not increasing burner hearth
Height and also it is not required on the premise of being horizontal type structure by chamber design, it is working medium in cooling wall to realize using supercritical carbon dioxide
After super-pressure acting after place's heat absorption, the high pressure after heat absorption at single reheat wall are done work and absorbed heat at double reheat wall
In, low pressure acting, without the inherent shortcoming of horizontal chamber furnace (oven), heat transfer efficiency is high, can twice work doing, to cascaded utilization of energy, the energy
Utilization ratio is high.
(2) heating surface area of single reheat wall of the invention and double reheat wall can be according to appropriate adjustment be needed, i.e., it is inhaled
Heat can adjust, single reheat wall can select in antetheca, rear wall, left wall, right wall, inwall any one, two or three, remain
Under for double reheat wall, be suitable for the single reheat acting and double reheat acting of different load, opened by appropriate valve
Close the single reheat wall and double reheat wall that particular combination may be selected, thus can flexible modulation hot working fluid again temperature, ensure again
The degree of superheat of hot working fluid is up to standard.
(3) the inwall cooling wall pipeline section set up, the heat transfer space inside effective rate of utilization burner hearth between more circle of contacts so that portion
Inwall cooling wall pipeline section is divided to may be used as single reheat device or secondary reheater, so as to meet the temperature requirements of steam；Meanwhile no
The design that cooling wall pipeline section is mutually adjacent in conventional heating surface design is same as, the design of compartment cooling wall pipeline section can in inwall
Meet the exchange of the arranged on left and right sides flue gas of burner hearth, flue gas patch wall is not susceptible to, so as to effective slagging prevention slagging.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of supercritical carbon dioxide double reheat coal-fired electric generation furnace system provided by the invention；
Fig. 2 is diagrammatic cross-section of the steam generator system along A-A shown in Fig. 1；
Fig. 3 is the connection relationship diagram of each part of steam generator system shown in Fig. 1；
Fig. 4 is cooling wall pipe segment structure schematic diagram in the design of conventional heating surface；
Fig. 5 is cooling wall pipe segment structure schematic diagram in heating surface of the present invention design.
In accompanying drawing, the list of parts representated by each label is as follows：1st, cooling wall；2nd, burner；3rd, hot wall again；3-1, once
Hot wall again；3-2, double reheat wall；4th, pendant superheater；5th, high temperature superheater；6th, a high temperature reheater；7th, secondary high-temperature is again
Hot device；8th, a low-temperature reheater；9th, secondary low-temperature reheater；10th, low temperature superheater；11st, economizer；12nd, air preheater；
13rd, compressor；14th, ultra-high pressure cylinder；15th, high pressure cylinder；16th, intermediate pressure cylinder；17th, low pressure (LP) cylinder.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as limiting to the invention.
As shown in Figures 1 to 3, the present invention provides a kind of more tangential boiler systems of supercritical carbon dioxide double reheat coal fired power generation
System, including burner hearth and flue, burner hearth are vertically arranged, and the side wall of burner hearth is made up of cooling wall 1 and reheating wall 3, and cooling wall 1 is positioned at again
The lower section of hot wall 3, the middle part of cooling wall 1 and lower area are provided with burner 2, reheating wall 3 by single reheat wall 3-1 and it is secondary again
Hot wall 3-2 is formed, and single reheat wall 3-1 and double reheat wall 3-2 terrain clearance are equal or close, flue interior edge flow of flue gas
Direction classification is provided with superheater module and reheater module.
Further, the cross section of burner hearth is rectangle, and reheating wall 3 is made up of antetheca, rear wall, left wall, right wall, inwall, antetheca,
Rear wall, left wall, right wall, the upper and lower ends of inwall are each provided with independent header, single reheat wall 3-1 by antetheca, rear wall,
In left wall, right wall, inwall any one, two or three and corresponding independent header composition.
Further, superheater module includes pendant superheater 4, the high temperature superheater 5 set gradually along flow of flue gas direction
With low temperature superheater 10, reheater module includes high temperature reheater group and the low-temperature reheater set gradually along flow of flue gas direction
Group, high temperature reheater group include the high temperature reheater 6 and secondary high-temperature reheater 7 being set up in parallel, low-temperature reheater group bag
Include the low-temperature reheater 8 and secondary low-temperature reheater 9 being arranged in series.
Further, flue is made up of horizontal flue and vertical flue, the both ends of horizontal flue respectively with burner hearth and vertical cigarette
The upper end in road is connected, and pendant superheater 4, high temperature superheater 5 and high temperature reheater group, vertical flue edge are provided with horizontal flue
Flow of flue gas direction is disposed with gas baffle, economizer 11 and air preheater 12, and the side of gas baffle is provided with low
Warm superheater 10, the opposite side of gas baffle are provided with low-temperature reheater group.
Further, it is 0.5L≤L pipeline section to be cooled down in cooling wall 1 in the length of vertical direction1＜ L, reheating pipe in reheating wall 3
Section is 0 ＜ L in the length of vertical direction2≤ 0.5L, L are furnace height, L1To cool down pipeline section in cooling wall 1 in vertical direction
Length, L2For reheating pipeline section in reheating wall 3 vertical direction length.
Further, reheating pipeline section is set in distance in inwall, in inwall the compartment of reheating pipeline section in a lateral direction away from
For 2d<L3<5d, L3It is the compartment of reheating pipeline section in a lateral direction in inwall away from the caliber that, d is reheating pipeline section in inwall.
Specifically, the connected mode of each part is as shown in Figure 3：The outlet of compressor 13 connects with the entrance of economizer 11, saves
The outlet of coal device 11 connects with the entrance independence header of cooling wall 1, and cooling wall 1 exports independent header and connected with the entrance of low temperature superheater 10
Logical, the outlet of low temperature superheater 10 connects with the entrance of high temperature superheater 5, and the outlet of high temperature superheater 5 connects with the entrance of pendant superheater 4
Logical, the outlet of pendant superheater 4 connects with the entrance of ultra-high pressure cylinder 14 of gas-turbine；Gas-turbine ultra-high pressure cylinder 14 exports and a low temperature
The entrance of reheater 8 connects, and an outlet of low-temperature reheater 8 connects with an entrance of high temperature reheater 6, a high temperature reheater 6
Outlet and secondary high-temperature reheater 7 export by independent pipeline and corresponding valve respectively with antetheca, rear wall, left wall,
Right wall connects with five independent headers of inwall lower end, antetheca, rear wall, left wall, right wall and five independent headers of inwall upper end
Connected by the entrance of high pressure cylinder 15 and the entrance of gas-turbine intermediate pressure cylinder 16 of independent pipeline and corresponding valve respectively with gas-turbine
Logical, the outlet of gas-turbine high pressure cylinder 15 connects with the secondary entrance of low-temperature reheater 9, the secondary outlet of low-temperature reheater 9 and secondary height
The entrance connection of warm reheater 7, the outlet of steamer intermediate pressure cylinder 16 connect with the entrance of low pressure (LP) cylinder 17, the outlet and compression of low pressure (LP) cylinder 17
Machine 13 connects, and completes whole cyclic process.
, can be by controlling the keyings of respective valves, flexibly according to single reheat and the specific burden requirement of double reheat
Various combination in selection antetheca, rear wall, left wall, right wall and inwall and corresponding independent header respectively constitutes single reheat wall 3-
1 and double reheat wall 3-2.
Embodiment 1
As shown in Fig. 2 under specific burden requirement, using antetheca, rear wall, inwall and corresponding independent header as once again
Hot wall 3-1, left wall and right wall and corresponding independent header are double reheat wall 3-2.
The opening and closing situation of valve and specific connected relation are as follows：Outlet of high temperature reheater 6 and antetheca, rear wall and inwall
The valve opening on connecting pipe between the independence header of respective lower end, the outlet of secondary high-temperature reheater 7 are each with left wall and right wall
Valve opening from the connecting pipe between the independence header of lower end, antetheca, rear wall and inwall each upper end independence header and gas
The valve opening on connecting pipe between the entrance of high pressure cylinder 15 of turbine, left wall and right wall each upper end independence header and turbine
The valve opening on connecting pipe between the entrance of intermediate pressure cylinder 16 of machine；Meanwhile an outlet of high temperature reheater 6 and left wall and the right side
Wall each close by the valve on the connecting pipe between lower end independence header, the outlet of secondary high-temperature reheater 7 and antetheca, rear wall and
Inwall each close by the valve on the connecting pipe between lower end independence header, and each upper end independently joins for antetheca, rear wall and inwall
Valve on connecting pipe between case and the entrance of intermediate pressure cylinder 16 of gas-turbine is closed, the respective upper end independence header of left wall and right wall
Valve on connecting pipe between the entrance of high pressure cylinder 15 of gas-turbine is closed.
Embodiment 2
Under another specific burden requirement, using antetheca, right wall and corresponding independent header as single reheat wall 3-1, after
Wall, left wall, inwall and corresponding independent header are double reheat wall 3-2.
The opening and closing situation of valve and specific connected relation are as follows：The outlet of high temperature reheater 6 and antetheca and right wall are each
The valve opening on connecting pipe between the independence header of lower end, the outlet of secondary high-temperature reheater 7 are each with rear wall, left wall, inwall
Valve opening from the connecting pipe between the independence header of lower end, antetheca and right wall each upper end independence header and gas-turbine
The valve opening on connecting pipe between the entrance of high pressure cylinder 15, rear wall, left wall and inwall each upper end independence header and turbine
The valve opening on connecting pipe between the entrance of intermediate pressure cylinder 16 of machine；Meanwhile an outlet of high temperature reheater 6 and rear wall, a left side
The valve of wall and inwall each on the connecting pipe between lower end independence header is closed, and secondary high-temperature reheater 7 exports and antetheca
And right wall each close by the valve on the connecting pipe between lower end independence header, antetheca and right wall each upper end independence header with
Valve on connecting pipe between the entrance of intermediate pressure cylinder 16 of gas-turbine is closed, and each upper end independently joins for rear wall, left wall and inwall
Valve on connecting pipe between case and the entrance of high pressure cylinder 15 of gas-turbine is closed.
Embodiment 3
Under other specific burden requirement, using antetheca, rear wall and left wall and corresponding independent header as single reheat wall
3-1, right wall, inwall and corresponding independent header are double reheat wall 3-2.
The opening and closing situation of valve and specific connected relation are as follows：Outlet of high temperature reheater 6 and antetheca, rear wall and left wall
The valve opening on connecting pipe between the independence header of respective lower end, the outlet of secondary high-temperature reheater 7 and right wall, inwall lower end
The valve opening on connecting pipe between independent header, antetheca, rear wall and left wall each upper end independence header and gas-turbine
The valve opening on connecting pipe between the entrance of high pressure cylinder 15, the intermediate pressure cylinder of right wall, inwall upper end independence header and gas-turbine
The valve opening on connecting pipe between 16 entrances；Meanwhile an outlet of high temperature reheater 6 and right wall and inwall lower end are independent
Valve on connecting pipe between header is closed, and each lower end is only with antetheca, rear wall and left wall for the outlet of secondary high-temperature reheater 7
The valve on connecting pipe between vertical header is closed, and antetheca, rear wall and left wall are each in upper end independence header and gas-turbine
Valve on connecting pipe between the entrance of cylinder pressure 16 is closed, right wall and the high pressure cylinder 15 of inwall upper end independence header and gas-turbine
Valve on connecting pipe between entrance is closed.
I.e. after load changes, according to the tool of the single reheat working medium of reality and double reheat working medium degree of superheat deficiency
Body situation, by adjust different valve opening and closings or aperture to single reheat wall 3-1 and double reheat wall 3-2 endotherm area and
Working medium flow is allocated adjustment, so that the degree of superheat of single reheat working medium and double reheat working medium is up to standard.
Fig. 4 is cooling wall pipe segment structure schematic diagram in the design of conventional heating surface, and Fig. 5 is to be cooled down in heating surface of the present invention design
Wall pipe segment structure schematic diagram, designed different from the adjacent formula of cooling wall pipeline section in conventional heating surface design shown in Fig. 4, the present invention
Cooling wall pipeline section is set in distance in middle above-described embodiment 1-3, and the spacing of cooling wall pipeline section is 2d in inwall<L3<5d, L3To be interior
The spacing of cooling wall pipeline section in wall, d is the caliber of the spacing of cooling wall pipeline section in inwall, even if above-mentioned design to control
Failure (such as because manual control cause the air quantity of arranged on left and right sides with coal dust amount it is different cause thermic load (exhaust gas volumn) difference), certain
Side burner, which breaks down, causes speed to reduce, coal dust difference causes both sides fired heat duty (exhaust gas volumn) difference (such as because of coal dust
Pipeline obstruction causes certain burner coal dust deficiency to cause thermic load (exhaust gas volumn) difference) etc. under situation, the flue gas in burner hearth also may be used
Left and right exchange is carried out, is not susceptible to phenomena such as flue gas pastes wall, so as to effective slagging prevention slagging；Also, by a left side for flue gas,
It is right exchange also can active balance burner hearth middle left and right both sides thermic load, be advantageous to the stable operation of boiler.
Preferred embodiments of the present invention are these are only, not thereby limit embodiments of the present invention and protection domain, it is right
For those skilled in the art, it should can appreciate that and all be replaced with being equal made by description of the invention and diagramatic content
Change and obviously change resulting scheme, should be included in protection scope of the present invention.
Claims (9)
- A kind of 1. more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation, it is characterised in that including：Burner hearth and cigarette Road, the burner hearth are vertically arranged, and one end of the flue connects with the top of the burner hearth, it is characterised in that the burner hearth By cooling wall (1) and again, hot wall (3) forms side wall, and the cooling wall (1) is below the hot wall (3) again, the cooling wall (1) middle part and/or lower area is provided with burner (2), the hot wall again (3) by single reheat wall (3-1) and it is secondary again Hot wall (3-2) forms, and the terrain clearance of the single reheat wall (3-1) and double reheat wall (3-2) is equal or close, the cigarette The classification of road interior edge flow of flue gas direction is provided with superheater module and reheater module；The hot wall again (3) is by antetheca, rear wall, left wall, right wall and is arranged at by antetheca, rear wall, left wall, right wall enclosed area Inwall composition, the antetheca, rear wall, left wall, the upper and lower ends of right wall and inwall are each provided with independent header, described one Secondary hot wall again (3-1) by any one in the antetheca, rear wall, left wall, right wall and inwall, two or three and it is corresponding solely Vertical header composition.
- 2. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 1, it is characterised in that The single reheat wall (3-1) is made up of the antetheca, rear wall and inwall and corresponding independent header, the double reheat wall (3-2) is made up of the left wall and right wall and corresponding independent header.
- 3. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 1, it is characterised in that The single reheat wall (3-1) is made up of the antetheca and right wall and corresponding independent header, the double reheat wall (3-2) by The rear wall, left wall and inwall and corresponding independent header composition.
- 4. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 1, it is characterised in that The single reheat wall (3-1) is made up of the antetheca, rear wall and left wall and corresponding independent header, the double reheat wall (3-2) is made up of the right wall and inwall and corresponding independent header.
- 5. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to any one of Claims 1-4, its It is characterised by, the superheater module includes pendant superheater (4), the high temperature superheater set gradually along flow of flue gas direction (5) and low temperature superheater (10), the reheater module include the high temperature reheater group set gradually along flow of flue gas direction and Low-temperature reheater group, the high temperature reheater group include a high temperature reheater (6) and the secondary high-temperature reheater being arranged in parallel (7), the low-temperature reheater group includes a low-temperature reheater (8) and the secondary low-temperature reheater (9) being arranged in series.
- 6. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 5, it is characterised in that The flue is made up of horizontal flue and vertical flue, the both ends of the horizontal flue respectively with the burner hearth and the vertical cigarette The upper end in road is connected, and the pendant superheater (4), high temperature superheater (5) and high temperature reheater are provided with the horizontal flue Group, the vertical flue are disposed with gas baffle, economizer (11) and air preheater (12), institute along flow of flue gas direction The side for stating gas baffle is provided with the low temperature superheater (10), and the opposite side of the gas baffle is provided with the low temperature again Hot device group.
- 7. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 5, it is characterised in that High temperature reheater (6) outlet and the outlet of secondary high-temperature reheater (7) pass through independent pipeline and corresponding valve Door connected respectively with five independent headers of the antetheca, rear wall, left wall, right wall and inwall lower end, the antetheca, after Wall, left wall, right wall and five independent headers of inwall upper end by independent pipeline and corresponding valve respectively with gas High pressure cylinder (15) entrance of turbine connects with gas-turbine intermediate pressure cylinder (16) entrance, the outlet of the pendant superheater (4) and turbine Ultra-high pressure cylinder (14) entrance connection of machine.
- 8. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 7, it is characterised in that Cooling pipeline section is 0.5L≤L in the length of vertical direction in the cooling wall (1)1＜ L, reheating pipeline section in the hot wall again (3) It is 0 ＜ L in the length of vertical direction2≤ 0.5L, L are furnace height, L1It is that pipeline section is cooled down in cooling wall (1) in vertical direction Length, L2For reheating pipeline section in hot wall again (3) vertical direction length.
- 9. the more tangential boiler systems of supercritical carbon dioxide reheating coal fired power generation according to claim 8, it is characterised in that Reheating pipeline section is set in distance in the inwall, and the compartment of reheating pipeline section in a lateral direction is away from for 2d in the inwall<L3< 5d, L3It is the compartment of reheating pipeline section in a lateral direction in the inwall away from the caliber that, d is reheating pipeline section in the inwall.
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| JP2001272001A (en) * | 2000-03-29 | 2001-10-05 | Babcock Hitachi Kk | Boiler equipment |
| CN201621686U (en) * | 2009-12-22 | 2010-11-03 | 浙江大学 | Hearth of circulating fluid bed boiler with large crosswise-penetrated middle partition wall structure |
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Application publication date: 20180406 |