CN109506231A - Environment-friendly and energy-efficient biomass recirculating fluidized bed boiler steam/water circulating integrated morphology - Google Patents
Environment-friendly and energy-efficient biomass recirculating fluidized bed boiler steam/water circulating integrated morphology Download PDFInfo
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- CN109506231A CN109506231A CN201811553211.2A CN201811553211A CN109506231A CN 109506231 A CN109506231 A CN 109506231A CN 201811553211 A CN201811553211 A CN 201811553211A CN 109506231 A CN109506231 A CN 109506231A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Environment-friendly and energy-efficient biomass recirculating fluidized bed boiler steam/water circulating integrated morphology, it is related to a kind of boiler and steam/water circulating integrated morphology.The present invention solves the problems, such as that the steam/water circulating integrated morphology reliability of existing fluidized-bed combustion boiler is low, pollutant is high, easy slagging ash deposits corrosion and without power-failure protecting function.Distribution header, low-level (stack-gas) economizer import header, low-level (stack-gas) economizer, low-level (stack-gas) economizer outlet header, high-temperature economizer import header, high-temperature economizer, high-temperature economizer outlet header and drum are sequentially communicated from the bottom to top, it is connected between low-level (stack-gas) economizer outlet header and high-temperature economizer import header by the first aqueduct, it is connected between economizer exit header and drum by the second aqueduct, low-level (stack-gas) economizer import header is connected to by recirculation pipe with drum；Drum is connected to by convection bank down-comer with convection bank lower header, and convection bank lower header, convection bank and convection bank upper collecting chamber are sequentially communicated from the bottom to top.The present invention is used for biomass recirculating fluidized bed boiler.
Description
Technical field
The present invention relates to a kind of boilers and steam/water circulating integrated morphology, are specifically related to a kind of environment-friendly and energy-efficient biomass circulating
Fluidized-bed combustion boiler steam/water circulating integrated morphology realizes that biomass energy clean and effective utilizes.
Background technique
" Biomass Energy Development planning " and " promoting biomass energy for the instruction of the thermally developing " requirement issued by country,
And China's regional area limit coal, the development for prohibiting coal work, the exploitation of biomass recirculating fluidized bed boiler is accelerated, needs to reach
Clean burning and low pollution emission and steady load operation.Agriculture and forestry biomass open incineration can lead to haze, fire etc. pair
The damage of environment；The improper pollution that will cause to natural resources of animal husbandry waste harmlessness disposing.
It cleans that the burning biomass such as agricultural and animal husbandry are discarded and residue realizes energy saving and environmental protection, constitutes
The burning of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler high-efficiency cleaning；It can reach the fossil fuels such as Substitute coal, realized
Biomass recirculating fluidized bed boiler festival energy, low emission, easily adjustment and Anti-slagging, not dust stratification, corrosion-resistant, solve biomass and follow
Circulation fluidized bed boiler energy conservation and environmental protection, clean and effective and steady load, safe and reliable operation.
But the steam/water circulating integrated morphology reliability of existing environment-friendly and energy-efficient biomass recirculating fluidized bed boiler it is low,
Pollutant is high, easy slagging ash deposits corrosion and without power-failure protecting function.
Summary of the invention
The present invention be solve the steam/water circulating integrated morphology of existing environment-friendly and energy-efficient biomass recirculating fluidized bed boiler can
By property is low, pollutant is high, easy slagging ash deposits corrosion and the problem of without power-failure protecting function, and then it is raw to provide a kind of environment-friendly and energy-efficient
Substance circulating fluidized bed boiler steam/water circulating integrated morphology.
The technical solution adopted by the present invention to solve the above technical problem is:
The steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention, the steam/water circulating
Integrated morphology includes economizer water system, burner hearth water system, convection bank boiler circuit and superheater vapour system, economizer water system
System includes distribution header 11, low-level (stack-gas) economizer import header 12, low-level (stack-gas) economizer 13, low-level (stack-gas) economizer outlet header 14, first
Aqueduct 15, high-temperature economizer import header 16, high-temperature economizer 17, high-temperature economizer outlet header 18, the second aqueduct 19
With drum 20, it is characterised in that: economizer water system further includes recirculation pipe 21；Distribute header 11, low-level (stack-gas) economizer inlet header
Case 12, low-level (stack-gas) economizer 13, low-level (stack-gas) economizer outlet header 14, high-temperature economizer import header 16, high-temperature economizer 17, high temperature
Economizer exit header 18 and drum 20 are sequentially communicated from the bottom to top, low-level (stack-gas) economizer outlet header 14 and high-temperature economizer import
It is connected between header 16 by the first aqueduct 15, is connected between economizer exit header 18 and drum 20 by the second aqueduct 19
Logical, low-level (stack-gas) economizer import header 12 is connected to by recirculation pipe 21 with drum 20；
Burner hearth water system includes water-cooling wall down-comer 22, prepattern wall lower header 23, side membrane wall lower header 24, rear membrane type
Wall lower header 25, prepattern wall 26, side membrane wall 27, rear membrane wall 28, front and back membrane wall upper collecting chamber 29, side membrane wall upper collecting chamber
30 and fairlead 31, the top of water-cooling wall down-comer 22 be connected to drum 20, the lower part of water-cooling wall down-comer 22 respectively with cephacoria
Formula wall lower header 23, side membrane wall lower header 24 are connected to rear membrane wall lower header 25, and prepattern wall lower header 23 passes through cephacoria
Formula wall 26 is connected to front and back membrane wall upper collecting chamber 29, and rear membrane wall lower header 25 on rear membrane wall 28 and front and back membrane wall by collecting
Case 29 is connected to, and side membrane wall lower header 24 is connected to by side membrane wall 27 with side membrane wall upper collecting chamber 30, is collected on the membrane wall of front and back
Case 29 and side membrane wall upper collecting chamber 30 are connected to by fairlead 31 with drum 20；
Convection bank boiler circuit includes convection bank down-comer 32, convection bank lower header 33, convection bank 34, convection current
Upper collecting chamber 35 and the first steam guiding tube 36 are restrained, drum 20 is connected to by convection bank down-comer 32 with convection bank lower header 33,
Convection bank lower header 33, convection bank 34 and convection bank upper collecting chamber 35 are sequentially communicated from the bottom to top, convection bank upper collecting chamber
35 are connected to by the first steam guiding tube 36 with drum 20；
Superheater vapour system includes saturated vapor fairlead 37, low import header 38 excessively, low temperature superheater 39, low outlet excessively
Header 40, the second steam guiding tube 41, medium temperature screen formula cross import header 42, medium temperature pendant superheater 43, medium temperature screen formula and cross outlet header
44, third steam guiding tube 45, direct-contact desuperheater 46, high temperature screen formula cross import header 47, high temperature pendant superheater 48, high temperature screen formula mistake
Outlet header 49,50 sum aggregate vapour header 51 of the 4th steam guiding tube, in drum 20 saturated vapor by steam fairlead 37 and low mistake into
Mouth header 38 is connected to, and low import header 38, low temperature superheater 39 and the low outlet header 40 of crossing crossed is sequentially communicated from the bottom to top, low
It crosses outlet header 40 and is connected to by the second steam guiding tube 41 with the upper end that medium temperature screen formula crosses import header 42, medium temperature screen formula crosses inlet header
Case 42, medium temperature pendant superheater 43 and medium temperature screen formula are crossed outlet header 44 and are from top to bottom sequentially communicated, and medium temperature screen formula crosses outlet collection
Case 44 is connected to by third steam guiding tube 45 with one end of direct-contact desuperheater 46, the other end high temperature screen formula of direct-contact desuperheater 46 cross into
Mouth header 47 is connected to, and high temperature screen formula crosses import header 47, high temperature pendant superheater 48 and high temperature screen formula and crosses outlet header 49 under
Supreme to be sequentially communicated, high temperature screen formula crosses being connected to by the 4th steam guiding tube 50 with collection vapour header 51 for outlet header 49.
In one embodiment, convection bank boiler circuit in-line arrangement, parallel baffled, the tube spacing of convection bank 34
For 200mm.
In one embodiment, low temperature superheater 39 uses in-line arrangement, and the tube spacing of low temperature superheater 39 is
100mm。
In one embodiment, economizer water system pipeline uses in-line arrangement, and tube coupling is away from for 100mm.
In one embodiment, it is disposed with soot blower interface between economizer water system comb, is arranged in convection bank 34
There is soot blower interface.
In one embodiment, medium temperature pendant superheater 43 and high temperature pendant superheater 48 are from top to bottom successively set on
In boiler furnace, the lower external face bottom of medium temperature pendant superheater 43 and high temperature pendant superheater 48 is equipped with anti-corrosion layer.
In one embodiment, the underface of economizer water system is arranged in air preheater 9, air preheater 9
Pipe uses horizontal arrangement, and horizontal and vertical distance is 80mm between the pipe of air preheater 9.
The beneficial effects of the present invention are:
The steam/water circulating integrated morphology reasonable Arrangement tail portion of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention
Panel-pipe of heating surface spacing, convection bank in-line arrangement, parallel baffled；Low temperature superheater uses in-line arrangement, prevents slagging from keeping away
Exempt to corrode；
The steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention is in convection bank, low
Soot blower interface is arranged in warm superheater effective range；Cloth soot blower interface, cloth in economizer, air preheater effective range
Enough soot blowers are set, selective sootblowing prevents dust stratification from avoiding corroding；
The steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention reasonably selects tail portion
Heating surface flue gas flow rate, 11~13m/s of velocity of flue gas at low temperature superheater, 9~11m/s of velocity of flue gas at economizer, air are pre-
8~10m/s of velocity of flue gas at hot device enhances self-cleaning ability under conditions of not wearing；
The steam/water circulating integrated morphology design of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention is larger heated
The air preheater in face, it is ensured that match air temperature, to guarantee the biggish biomass combustion of moisture content；Air preheater pipe is using horizontal
It arranges, horizontal and vertical distance is coarse pitch 80mm between pipe, and dust stratification is avoided to improve heat exchange efficiency；Air preheater final stage bobbin carriage
Using ND steel or enamel tube material, low-temperature corrosion of air preheater is avoided；
The steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention constitutes low-temperature burning
Technology controls furnace exit temperature within 800 DEG C, reduces thermal NOXIt generates；What biomass gave off in combustion
C02, more as absorbed in its growth course；
The steam/water circulating integrated morphology self-cleaning ability of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention is strong,
Recirculation pipe is opened after boiler startup or suddenly power failure, guarantees that economizer water system forms Natural Circulation, avoids dry combustion method and vaporization,
Play the role of power-failure protecting, boiler closes recirculation pipe when operating normally, economizer water system forms forced circulation；Carbonated drink is followed
Ring integrated morphology high reliablity has the function of power-failure protecting.
Detailed description of the invention
Fig. 1 is the overall structure main view of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention；
Fig. 2 is the left cross-sectional view (A-A of Zuo Banwei Fig. 1 of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention
Left cross-sectional view, right is partly the right half sectional view of B-B of Fig. 1)；
Fig. 3 is the C-C cross-sectional view of Fig. 1；
Fig. 4 is the D-D cross-sectional view of Fig. 1；
Fig. 5 is the steam/water circulating integrated morphology overall structure of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention
Schematic diagram；
Fig. 6 is the schematic diagram of economizer water system in the specific embodiment of the invention one；
Fig. 7 is the schematic diagram of burner hearth water system in the specific embodiment of the invention one；
Fig. 8 is the schematic diagram of convection bank boiler circuit in the specific embodiment of the invention one；
Fig. 9 is the schematic diagram of superheater vapour system in the specific embodiment of the invention one；
Figure 10 is the work of the steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention
Schematic diagram (single arrow is water (flow) direction in figure, and double-head arrow is steam stream direction).
In figure: 1 be biomass feeding apparatus, 2 be feed supplementing device, 3 be slag-draining device, 4 be burner hearth ontology, 5 be under it is secondary
Wind apparatus, 6 for upper overfire air device, 7 be separation material-returning device, 8 be boiler back end ductwork, 9 be air preheater, 10 be column,
Beam and platform staircase, 11 be distribution header, 12 be low-level (stack-gas) economizer import header, 13 be low-level (stack-gas) economizer, 14 be that high temperature saves coal
Device import header, 15 for the first aqueduct, 16 be high-temperature economizer import header, 17 be high-temperature economizer, 18 be high temperature save coal
Device outlet header, 19 for the second aqueduct, 20 be drum, 21 recirculation pipes, 22 be down-comer, 23 be prepattern wall lower header,
24 it is side membrane wall lower header, 25 be rear membrane wall lower header, 26 be prepattern wall, 27 be side membrane wall, 28 is rear membrane type
Wall, 29 be front and back membrane wall upper collecting chamber, 30 be side membrane wall upper collecting chamber, 31 be fairlead, 32 be convection bank down-comer, 33 be
Convection bank lower header, 34 be convection bank, 35 be convection bank upper collecting chamber, 36 be the first steam guiding tube, 37 be that saturated vapor draws
Outlet pipe, 38 for it is low cross import header, 39 be low temperature superheater, 40 be it is low cross outlet header, 41 be second steam guiding tube, 42 be
Warm screen formula cross import header, 43 be medium temperature pendant superheater, 44 be that medium temperature screen formula crosses outlet header, 45 is third steam guiding tube, 46
For direct-contact desuperheater, 47 be high temperature screen formula cross import header, 48 be high temperature pendant superheater, 49 be high temperature screen formula cross outlet collection
Case, 50 for the 4th steam guiding tube, 51 be collection vapour header.
Specific embodiment
Specific embodiment 1: as shown in Figure 1, the environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of present embodiment
Steam/water circulating integrated morphology includes economizer water system, burner hearth water system, convection bank boiler circuit and superheater vapour system, is saved
Coal device water system includes distribution header 11, low-level (stack-gas) economizer import header 12, low-level (stack-gas) economizer 13, low-level (stack-gas) economizer outlet header
14, the first aqueduct 15, high-temperature economizer import header 16, high-temperature economizer 17, high-temperature economizer outlet header 18, second
Aqueduct 19 and drum 20, economizer water system further include recirculation pipe 21；Distribute header 11, low-level (stack-gas) economizer import header
12, low-level (stack-gas) economizer 13, low-level (stack-gas) economizer outlet header 14, high-temperature economizer import header 16, high-temperature economizer 17, high temperature save
Coal device outlet header 18 and drum 20 are sequentially communicated from the bottom to top, low-level (stack-gas) economizer outlet header 14 and high-temperature economizer inlet header
It is connected between case 16 by the first aqueduct 15, is connected between economizer exit header 18 and drum 20 by the second aqueduct 19
Logical, low-level (stack-gas) economizer import header 12 is connected to by recirculation pipe 21 with drum 20；
Burner hearth water system includes water-cooling wall down-comer 22, prepattern wall lower header 23, side membrane wall lower header 24, rear membrane type
Wall lower header 25, prepattern wall 26, side membrane wall 27, rear membrane wall 28, front and back membrane wall upper collecting chamber 29, side membrane wall upper collecting chamber
30 and fairlead 31, the top of water-cooling wall down-comer 22 be connected to drum 20, the lower part of water-cooling wall down-comer 22 respectively with cephacoria
Formula wall lower header 23, side membrane wall lower header 24 are connected to rear membrane wall lower header 25, and prepattern wall lower header 23 passes through cephacoria
Formula wall 26 is connected to front and back membrane wall upper collecting chamber 29, and rear membrane wall lower header 25 on rear membrane wall 28 and front and back membrane wall by collecting
Case 29 is connected to, and side membrane wall lower header 24 is connected to by side membrane wall 27 with side membrane wall upper collecting chamber 30, is collected on the membrane wall of front and back
Case 29 and side membrane wall upper collecting chamber 30 are connected to by fairlead 31 with drum 20；
Convection bank boiler circuit includes convection bank down-comer 32, convection bank lower header 33, convection bank 34, convection current
Upper collecting chamber 35 and the first steam guiding tube 36 are restrained, drum 20 is connected to by convection bank down-comer 32 with convection bank lower header 33,
Convection bank lower header 33, convection bank 34 and convection bank upper collecting chamber 35 are sequentially communicated from the bottom to top, convection bank upper collecting chamber
35 are connected to by the first steam guiding tube 36 with drum 20；
Superheater vapour system includes saturated vapor fairlead 37, low import header 38 excessively, low temperature superheater 39, low outlet excessively
Header 40, the second steam guiding tube 41, medium temperature screen formula cross import header 42, medium temperature pendant superheater 43, medium temperature screen formula and cross outlet header
44, third steam guiding tube 45, direct-contact desuperheater 46, high temperature screen formula cross import header 47, high temperature pendant superheater 48, high temperature screen formula mistake
Outlet header 49,50 sum aggregate vapour header 51 of the 4th steam guiding tube, in drum 20 saturated vapor by steam fairlead 37 and low mistake into
Mouth header 38 is connected to, and low import header 38, low temperature superheater 39 and the low outlet header 40 of crossing crossed is sequentially communicated from the bottom to top, low
It crosses outlet header 40 and is connected to by the second steam guiding tube 41 with the upper end that medium temperature screen formula crosses import header 42, medium temperature screen formula crosses inlet header
Case 42, medium temperature pendant superheater 43 and medium temperature screen formula are crossed outlet header 44 and are from top to bottom sequentially communicated, and medium temperature screen formula crosses outlet collection
Case 44 is connected to by third steam guiding tube 45 with one end of direct-contact desuperheater 46, the other end high temperature screen formula of direct-contact desuperheater 46 cross into
Mouth header 47 is connected to, and high temperature screen formula crosses import header 47, high temperature pendant superheater 48 and high temperature screen formula and crosses outlet header 49 under
Supreme to be sequentially communicated, high temperature screen formula crosses being connected to by the 4th steam guiding tube 50 with collection vapour header 51 for outlet header 49.
Air preheater final stage bobbin carriage uses ND steel or enamel tube material；
The steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler of the invention chooses biggish furnace
Thorax heating surface area reduces the ignition temperature in main circulation loop, constitutes low-temperature burning technology, makes furnace exit temperature control
Within 800 DEG C, superheater and convection bank slagging in furnace are prevented.
A large amount of recycle stock in circulating fluidized bed boiler main circulation loop, have it is good from deashing characteristic, can prevent
Water wall surface slagging.Furnace bottom arranges heavy caliber scum pipe, effectively displaces the small clinker generated in combustion process.
Containing a large amount of material in boiler furnace, a large amount of material is carried to upper furnace by flue gas in combustion,
By being arranged in the separator of furnace outlet, material and flue gas are separated, and by returning charge valve by loopback of material to bed, repeatedly
Circulating combustion.Due to material concentration height, there is very big thermal capacity and good material to mix, boiler is to biomass fuel type
Adaptability it is stronger.
Biomass fuel moisture content is big, and exhaust gas volumn is larger, and design is optimized in boiler, selects reasonable flue gas stream
Speed reduces bed pressure, reduces abrasion etc.；
First and second ratio of reasonable distribution adjusts combustion share in furnace, the fluctuation of adapted biomass moisture.
Tail portion accumulatingdust and slagging and corrosion-resistant measure:
Reasonable Arrangement back-end surfaces pipe arranges spacing, and convection bank in-line arrangement, parallel baffled increase tube spacing extremely
200mm；Low temperature superheater uses in-line arrangement, increases tube spacing to 100mm, prevents slagging from avoiding corroding；
Soot blower interface is arranged in convection bank, low temperature superheater effective range；It is effective in economizer, air preheater
The soot blower interface of cloth in range arranges that enough soot blowers, selective sootblowing prevent dust stratification from avoiding corroding；
Back-end surfaces flue gas flow rate is reasonably selected, 11~13m/s of velocity of flue gas at low temperature superheater, flue gas at economizer
9~11m/s of speed, velocity of flue gas~10m/s at air preheater enhance self-cleaning ability under conditions of not wearing.
Convection bank structure:
Reasonable Arrangement back-end surfaces pipe arranges spacing, and convection bank carries out in-line arrangement, parallel baffled, increases tube spacing extremely
200mm；Prevent slagging from avoiding corroding；
Convection bank area 8~10m/s of flue gas flow rate is rationally designed, under conditions of not wearing, is enhanced from deashing energy
Power.
Soot blower interface is reserved in convection bank effective range, can arrange that enough soot blowers, selective sootblowing prevent from tying
Slag dust stratification avoids corroding；
Air preheater:
Design the air preheater of larger heating surface, it is ensured that match air temperature, to guarantee the biggish biomass combustion of moisture content；
Using multi-staged air preheater design, 4-6 level structure ensures that hot blast temperature is greater than 200 DEG C, to guarantee to enter burner hearth
Fuel can burn as early as possible, and maintain certain combustion temperature in hearth, realize efficient combustion；
Specific embodiment 2: as shown in Fig. 5, Fig. 8 Figure 10, present embodiment convection bank boiler circuit in-line arrangement,
Parallel baffled, the tube spacing of convection bank 34 are 200mm.It is designed in this way, convection bank boiler circuit slagging can be prevented, thus
Convection bank is avoided to corrode.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: present embodiment low temperature superheater 39 uses in-line cloth as shown in Fig. 5, Fig. 9 and Figure 10
It sets, the tube spacing of low temperature superheater 39 is 100mm.It is designed in this way, 39 slagging dust stratification of low temperature superheater can be prevented, to avoid
Low temperature superheater 39 corrodes.Other compositions and connection relationship are the same as one or two specific embodiments.
Specific embodiment 4: present embodiment economizer water system pipeline uses in-line as shown in Fig. 5, Fig. 6 and Figure 10
Arrangement, tube coupling is away from for 100mm.It is designed in this way, it can be to avoid economizer dust stratification, so that economizer be avoided to corrode.It is other composition and
Connection relationship is the same as the specific implementation mode 3.
Specific embodiment 5: being disposed with soot blower interface, convection bank between present embodiment economizer water system comb
Soot blower interface is disposed on 34.It is designed in this way, soot blower interface can connect the enough soot blowers of arrangement, and selective sootblowing is anti-
Only dust stratification avoids corroding.Other compositions and connection relationship are the same as the specific implementation mode 1,2 or 4.
Specific embodiment 6: as shown in Figure 1 and Figure 5, present embodiment medium temperature pendant superheater 43 and high temperature screen formula mistake
Hot device 48 is from top to bottom successively set in boiler furnace, outside the lower part of medium temperature pendant superheater 43 and high temperature pendant superheater 48
Surface is equipped with anti-corrosion layer.It is designed in this way, furnace chamber inner combustion temperature can be reduced, slagging is avoided and realize low nitrogen burning.Its
It is formed and connection relationship is identical as specific embodiment five.
Specific embodiment 7: as depicted in figs. 1 and 2, present embodiment air preheater 9 is arranged in economizer water system
Underface, the pipeline of air preheater 9 uses horizontal arrangement, and horizontal and vertical distance is between the pipe of air preheater 9
80mm.It is designed in this way, dust stratification is avoided to improve heat exchange efficiency.Other compositions and connection relationship and specific embodiment one, two, four or
Six is identical.
The course of work:
The allocated header 11 of boiler feedwater is distributed, and low-level (stack-gas) economizer import header 12 is entered after mixing, is flowed through low temperature and is saved coal
Device 13 exchanges heat, and is pooled to low-level (stack-gas) economizer outlet header 14, introduces high-temperature economizer import header by aqueduct 15
16, it flows through high-temperature economizer 17 and exchanges heat, then be pooled to high-temperature economizer outlet header 18, entered by 19 hot water of aqueduct
Drum 20.Recirculation pipe 21 is opened after boiler startup or suddenly power failure, guarantees that economizer water system forms Natural Circulation, avoids doing
It burns and vaporizes, play the role of power-failure protecting, recirculation pipe 21 is closed when boiler operates normally, economizer water system, which is formed, forces
Circulation；
Saturated water respectively enters prepattern wall lower header 23, side membrane wall next part by water-cooling wall down-comer 22 in drum 20
Case 24, rear membrane wall lower header 25 flow separately through prepattern wall 26, side membrane wall 27, rear membrane wall 28 and are pooled to front and back film
Formula wall upper collecting chamber 29, side membrane wall upper collecting chamber 30, introduce drum 20 by fairlead 31；
Saturated water enters convection bank lower header 33 by convection bank down-comer 32 in drum 20, is assigned to convection bank
34 exchange heat, and are then pooled to convection bank upper collecting chamber 35, introduce drum 20, convection bank boiler circuit through steam guiding tube 36
For natural cycle system；
Saturated vapor crosses import header 38 into low through saturated vapor fairlead 37 in drum 20, is assigned to low temperature superheater
39 exchange heat, and cross import header 42 by the importing of steam guiding tube 41 medium temperature screen formula through low cross after outlet header 40 collects, are assigned to
Medium temperature pendant superheater 43 is pooled to medium temperature screen formula and crosses outlet header 44 after heating, through steam guiding tube 45 flow through direct-contact desuperheater 46 into
Row desuperheat and adjusting enter after high temperature screen formula crosses import header 47 after the outflow of steam guiding tube 45 and are assigned to high temperature pendant superheater 48
It exchanges heat, high temperature screen formula is pooled to after heat exchange and crosses outlet header 49, collection vapour header 51 is entered after steam guiding tube 50.
Claims (7)
1. a kind of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler steam/water circulating integrated morphology, the steam/water circulating integrated morphology
Including economizer water system, burner hearth water system, convection bank boiler circuit and superheater vapour system, economizer water system includes point
With header (11), low-level (stack-gas) economizer import header (12), low-level (stack-gas) economizer (13), low-level (stack-gas) economizer outlet header (14), first
Aqueduct (15), high-temperature economizer import header (16), high-temperature economizer (17), high-temperature economizer outlet header (18), second
Aqueduct (19) and drum (20), it is characterised in that: economizer water system further includes recirculation pipe (21)；Distribution header (11),
Low-level (stack-gas) economizer import header (12), low-level (stack-gas) economizer (13), low-level (stack-gas) economizer outlet header (14), high-temperature economizer inlet header
Case (16), high-temperature economizer (17), high-temperature economizer outlet header (18) and drum (20) are sequentially communicated from the bottom to top, and low temperature saves
It is connected between coal device outlet header (14) and high-temperature economizer import header (16) by the first aqueduct (15), economizer exit
It is connected between header (18) and drum (20) by the second aqueduct (19), low-level (stack-gas) economizer import header (12) passes through recycling
Pipe (21) is connected to drum (20)；
Burner hearth water system includes water-cooling wall down-comer (22), prepattern wall lower header (23), side membrane wall lower header (24), caudacoria
Formula wall lower header (25), prepattern wall (26), side membrane wall (27), rear membrane wall (28), front and back membrane wall upper collecting chamber (29), side
The top of membrane wall upper collecting chamber (30) and fairlead (31), water-cooling wall down-comer (22) is connected to drum (20), water-cooling wall decline
The lower part for managing (22) connects with prepattern wall lower header (23), side membrane wall lower header (24) and rear membrane wall lower header (25) respectively
Logical, prepattern wall lower header (23) is connected to by prepattern wall (26) with front and back membrane wall upper collecting chamber (29), rear membrane wall next part
Case (25) is connected to by rear membrane wall (28) with front and back membrane wall upper collecting chamber (29), and side membrane wall lower header (24) passes through side form formula
Wall (27) is connected to side membrane wall upper collecting chamber (30), and front and back membrane wall upper collecting chamber (29) and side membrane wall upper collecting chamber (30) are by drawing
Outlet pipe (31) is connected to drum (20)；
Convection bank boiler circuit includes convection bank down-comer (32), convection bank lower header (33), convection bank (34), right
Flowing bundle upper collecting chamber (35) and the first steam guiding tube (36), drum (20) pass through convection bank down-comer (32) and convection bank next part
Case (33) connection, convection bank lower header (33), convection bank (34) and convection bank upper collecting chamber (35) successively connect from the bottom to top
Logical, convection bank upper collecting chamber (35) is connected to by the first steam guiding tube (36) with drum (20)；
Superheater vapour system include saturated vapor fairlead (37), it is low cross import header (38), low temperature superheater (39), low mistake go out
Mouth header (40), the second steam guiding tube (41), medium temperature screen formula cross import header (42), medium temperature pendant superheater (43), medium temperature screen formula
It crosses outlet header (44), third steam guiding tube (45), direct-contact desuperheater (46), high temperature screen formula and crosses import header (47), high temperature screen formula
Superheater (48), high temperature screen formula cross outlet header (49), the 4th steam guiding tube (50) sum aggregate vapour header (51), saturation in drum (20)
Steam is connected to by steam fairlead (37) with low cross import header (38), low to cross import header (38), low temperature superheater (39)
It is sequentially communicated from the bottom to top with low cross outlet header (40), low cross outlet header (40) pass through the second steam guiding tube (41) and medium temperature screen
Formula crosses the upper end connection of import header (42), and medium temperature screen formula crosses import header (42), medium temperature pendant superheater (43) and medium temperature screen
Formula is crossed outlet header (44) and is from top to bottom sequentially communicated, and medium temperature screen formula crosses outlet header (44) and passes through third steam guiding tube (45) and spray
One end of water attemperator (46) is connected to, and the other end high temperature screen formula of direct-contact desuperheater (46) crosses import header (47) connection, high temperature
Screen formula crosses import header (47), high temperature pendant superheater (48) and high temperature screen formula and crosses outlet header (49) successively to be connected from the bottom to top
Logical, high temperature screen formula crosses being connected to by the 4th steam guiding tube (50) with collection vapour header (51) for outlet header (49).
2. the steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler according to claim 1,
Be characterized in that: convection bank boiler circuit in-line arrangement, parallel baffled, the tube spacing of convection bank (34) are 200mm.
3. the steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler according to claim 1 or 2,
It is characterized by: low temperature superheater (39) uses in-line arrangement, the tube spacing of low temperature superheater (39) is 100mm.
4. the steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler according to claim 3,
Be characterized in that: economizer water system pipeline uses in-line arrangement, and tube coupling is away from for 100mm.
5. the integrated knot of the steam/water circulating of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler according to claim 1,2 or 4
Structure, it is characterised in that: be disposed with soot blower interface between economizer water system comb, be disposed with soot blower in convection bank (34) and connect
Mouthful.
6. the steam/water circulating integrated morphology of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler according to claim 5,
Be characterized in that: medium temperature pendant superheater (43) and high temperature pendant superheater (48) are from top to bottom successively set in boiler furnace,
The lower external face of medium temperature pendant superheater (43) and high temperature pendant superheater (48) is equipped with anti-corrosion layer.
7. according to claim 1, the steam/water circulating of environment-friendly and energy-efficient biomass recirculating fluidized bed boiler described in 2,4 or 6 is integrated
Structure, it is characterised in that: the underface of economizer water system is arranged in air preheater (9), and the pipeline of air preheater (9) is adopted
With horizontal arrangement, horizontal and vertical distance is 80mm between the pipe of air preheater (9).
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| CN110220178A (en) * | 2019-07-10 | 2019-09-10 | 哈尔滨红光锅炉总厂有限责任公司 | A kind of biomass direct-fired energy-saving type circulating fluidized bed boiler steam-water circulation system |
| CN110793012A (en) * | 2019-12-16 | 2020-02-14 | 哈尔滨红光锅炉总厂有限责任公司 | Pure-burning biomass environment-friendly circulating fluidized bed boiler water vapor system |
| CN111720810A (en) * | 2020-06-24 | 2020-09-29 | 南通万达锅炉有限公司 | Fluidized bed incinerator grading cooling module |
| CN112161274A (en) * | 2020-11-03 | 2021-01-01 | 山西蓝天环保设备有限公司 | Large-capacity circulating fluidized bed garbage combustion boiler |
| WO2021258646A1 (en) * | 2020-06-23 | 2021-12-30 | 江苏太湖锅炉股份有限公司 | Natural circulation ferrosilicon waste heat boiler circulation system |
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| CN112161274A (en) * | 2020-11-03 | 2021-01-01 | 山西蓝天环保设备有限公司 | Large-capacity circulating fluidized bed garbage combustion boiler |
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