CN108679601B - Wear-resistant, sealing and expansion integrated system of environment-friendly and energy-saving circulating fluidized bed boiler - Google Patents
Wear-resistant, sealing and expansion integrated system of environment-friendly and energy-saving circulating fluidized bed boiler Download PDFInfo
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- CN108679601B CN108679601B CN201810710400.XA CN201810710400A CN108679601B CN 108679601 B CN108679601 B CN 108679601B CN 201810710400 A CN201810710400 A CN 201810710400A CN 108679601 B CN108679601 B CN 108679601B
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- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 230000007613 environmental effect Effects 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 9
- 230000002265 prevention Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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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
The utility model provides an environmental protection and energy saving type circulating fluidized bed boiler's abrasionproof and sealed and inflation integrated system, it relates to the boiler field to solve circulating fluidized bed boiler leak, gas leakage, leak coal, ash leakage, leak cigarette, leak air etc. influence boiler environmental protection and energy saving, safe and stable operation's problem. The invention comprises a coal feeding pipe, a secondary air device, a hearth, a screen type heating surface, a separator, a material returning device, a flue, a superheater, an economizer, an air preheater, a slag discharging pipe, a waveform expansion joint, two metal expansion joints and three nonmetal expansion joints; the inlet of the coal feeding pipe, the secondary air device, the slag discharging pipe, the separator and the outlet of the returning charge device are respectively welded with the hearth in a sealing way, the smoke outlet of the separator is connected with the inlet of the flue through a third nonmetal expansion joint, a second nonmetal expansion joint is arranged between the inlet of the separator and the hearth, a first metal expansion joint is arranged between the slag discharging pipe and the hearth, and the waveform expansion joint is welded and sealed on the coal feeding pipe. The invention is suitable for boilers.
Description
Technical Field
The invention relates to the field of boilers, in particular to an anti-abrasion, sealing and expansion integrated system of an environment-friendly and energy-saving circulating fluidized bed boiler.
Background
The circulating fluidized bed combustion technology is rapidly developed due to the environment-friendly and energy-saving performance, so that the research and development and application of the environment-friendly and energy-saving circulating fluidized bed boiler are promoted, and the anti-abrasion, sealing and expansion three systems are necessary measures for ensuring the safe, efficient and clean operation of the circulating fluidized bed boiler. The existing circulating fluidized bed boiler has the problems of abrasion and sealing of a hearth, a separator, a superheater, an economizer, an air preheater and the like; sealing and expansion problems of a coal feeding pipe, a hearth, secondary air, a material returning device, a slag discharging pipe, a hearth and the like; expansion and sealing problems of a coal feeding pipe, a hearth, a separator, a flue, a returning charge device, a hearth and the like. If the problems of wear prevention, sealing and expansion are not well treated, the phenomena of water leakage, gas leakage, coal leakage, ash leakage, smoke leakage, air leakage and the like of the boiler are caused, the safety and stability of the boiler are seriously influenced, the environment is protected, the energy is saved, the operation is clean and efficient, and the economic loss and the environmental pollution are caused.
Disclosure of Invention
The invention provides an abrasion-proof, sealing and expansion integrated system of an environment-friendly and energy-saving circulating fluidized bed boiler, which aims to solve the problems that water leakage, air leakage, coal leakage, ash leakage, smoke leakage, air leakage and the like of the circulating fluidized bed boiler caused by abrasion, sealing and expansion affect the environment-friendly, energy-saving, safe and stable operation of the boiler.
The technical scheme adopted for solving the technical problems is as follows:
the device comprises a coal feeding pipe, a secondary air device, a hearth, a screen type heating surface, a separator, a material returning device, a flue, a superheater, an economizer, an air preheater, a slag discharging pipe, a waveform expansion joint, two metal expansion joints and three nonmetal expansion joints;
the side wall of the hearth is formed by welding a plurality of pipes and a plurality of flat steels;
the coal feeding pipe, the secondary air device, the slag discharging pipe, the inlet of the separator and the outlet of the material returning device are respectively welded with the hearth in a sealing way, a first nonmetallic expansion joint is arranged between the outlet of the material returning device and the hearth, a second nonmetallic expansion joint is arranged between the inlet of the separator and the hearth, the first metallic expansion joint is arranged between the slag discharging pipe and the hearth, the screen-type heating surface is arranged in the hearth and extends out of the hearth, the outlet of the separator is connected with the inlet of the material returning device, the smoke outlet of the separator is connected with the inlet of a flue through a third nonmetallic expansion joint, the inside of the flue is provided with a superheater and a coal economizer, the outlet of the coal economizer is connected with the air preheater through a second metallic expansion joint, and the waveform expansion joint is welded and sealed on the coal feeding pipe;
the screen type heating surface is of a film type wall structure formed by welding pipes I and flat steel I, the intersection of the screen type heating surface and the side wall of the hearth is welded and sealed, the intersection of the screen type heating surface and the side wall of the hearth is provided with wear-resistant and fireproof plastic, and a plurality of wear-resistant sheets are arranged on each pipe I of the screen type heating surface above the wear-resistant and fireproof plastic.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is provided with the nonmetal expansion joint to solve the expansion in the vertical and horizontal directions, and the corrugated expansion joint and the metal expansion joint to solve the problems of vertical expansion and sealing.
2. The wave expansion joint, the metal expansion joint and the nonmetal expansion joint are arranged, so that the problem of boiler expansion is solved, and meanwhile, the expansion joint is welded on each device in a sealing way to prevent leakage when the boiler burns, so that the problems of boiler sealing and expansion are solved.
3. The screen type heating surface is provided with wear-resistant and fireproof plastic, a plurality of wear-resistant sheets are arranged on a pipe of the screen type heating surface above the wear-resistant and fireproof plastic to solve the problem of wear resistance of the boiler, and meanwhile, the intersection of the screen type heating surface and the side wall of the hearth is sealed by welding to solve the sealing problem of the boiler.
4. The invention solves the problems of water leakage, air leakage, coal leakage, ash leakage, smoke leakage and air leakage of the circulating fluidized bed boiler through the cooperative control of the expansion, sealing and wear-resistant integrated system, so that the circulating fluidized bed boiler can be operated more environmentally-friendly, energy-saving, clean, efficient, safe and stable.
Drawings
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a partial schematic view of the screen heating surface 4 intersecting the furnace;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of a portion at I of FIG. 2;
FIG. 5 is a B-B cross-sectional view of FIG. 4;
FIG. 6 is a schematic view of the lower part of the furnace 3;
FIG. 7 is a C-C cross-sectional view of FIG. 6;
FIG. 8 is a schematic view of the corners of the furnace 3;
FIG. 9 is a D-view of FIG. 8;
FIG. 10 is an E-direction view of FIG. 9;
fig. 11 is a partial schematic view of the economizer 9;
FIG. 12 is an enlarged view of a portion at II of FIG. 11;
FIG. 13 is a cross-sectional F-F view of FIG. 11;
fig. 14 is a partial schematic view of the superheater 8;
FIG. 15 is an enlarged view of a portion of FIG. 14 at III;
FIG. 16 is a H-H cross-sectional view of FIG. 14;
FIG. 17 is a partial schematic view of the air preheater 10;
FIG. 18 is a partial schematic view of the connection of the coal feed pipe 1 to the furnace 3;
fig. 19 is a partially enlarged view at VI of fig. 18.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 5, and includes a coal feeding pipe 1, a secondary air device 2, a furnace 3, a screen heating surface 4, a separator 5, a material returning device 6, a flue 7, a superheater 8, an economizer 9, an air preheater 10, a slag discharging pipe 11, a waveform expansion joint 12, two metal expansion joints 14 and three nonmetal expansion joints 13;
the hearth 3 is formed by a plurality of pipes 3-1 and a plurality of membrane water walls welded by flat steel 3-2;
the coal feeding pipe 1, the overgrate air device 2, the slag discharging pipe 11, the inlet of the separator 5 and the outlet of the material returning device 6 are respectively welded with the hearth 3 in a sealing way, a first nonmetal expansion joint 13 is arranged between the outlet of the material returning device 6 and the hearth 3, a second nonmetal expansion joint 13 is arranged between the inlet of the separator 5 and the hearth, a first metal expansion joint 14 is arranged between the slag discharging pipe 11 and the hearth 3, the screen heating surface 4 is arranged inside the hearth 3 and extends out of the hearth 3, the outlet of the separator 5 is connected with the inlet of the material returning device 6, the smoke discharging port of the separator 5 is connected with the inlet of the flue 7 through a third nonmetal expansion joint 13, the inside of the flue 7 is provided with a superheater 8 and an economizer 9, the outlet of the economizer 9 is connected with the air preheater 10 through a second nonmetal expansion joint 14, and the waveform expansion joint 12 is welded and sealed on the coal feeding pipe 1;
the screen type heating surface 4 consists of membrane type water-cooled walls formed by welding pipes I4-1 and flat steel I4-2, the intersection of the screen type heating surface 4 and the side wall of the hearth 3 is welded and sealed, the intersection of the screen type heating surface 4 and the side wall of the hearth 3 is provided with a wear-resistant fireproof plastic 4-3, and a plurality of wear-resistant sheets 4-4 are arranged on each pipe I4-1 of the screen type heating surface 4 above the wear-resistant fireproof plastic 4-3.
The second embodiment is as follows: in the present embodiment, the front membrane water wall and the rear membrane water wall at the lower part of the furnace 3 are divided into a vertical section LX, a first inclined section XK and a second inclined section KT from top to bottom, the vertical section LX, the first inclined section XK and the second inclined section KT are smoothly transited,
the side film water wall at the lower part of the hearth 3 is divided into a first vertical section GM, a third inclined section MN, a second vertical section NR, a fourth inclined section RP and a third vertical section PQ from top to bottom, the first vertical section GM, the third inclined section MN, the second vertical section NR, the fourth inclined section RP and the third vertical section PQ are in smooth transition, the first inclined section XK and the third inclined section MN incline towards the outside of the hearth 3, the second inclined section KT and the fourth inclined section RP incline towards the inside of the hearth 3,
the inner surface of the second inclined section KT, the inner surface of the second vertical section NR, the inner surface of the fourth inclined section RP and the inner surface of the third vertical section PQ of the hearth 3 are respectively provided with a wear-resistant fireproof plastic layer 3-3;
a plurality of threaded pins 15 are welded on two pipes 3-1 of the membrane water wall at the corner of the hearth 3 from top to bottom respectively, and the wear-resistant fireproof plastic 4-3 and the threaded pins 15 are cast into a whole.
The rising flow velocity of smoke dust in the hearth 3 is controlled to be about 5m/s, meanwhile, the wall thickness of a film type water wall pipe 3-1 on the hearth 3 is 5mm, the thickness of flat steel 3-2 is 6mm, active wear prevention is adopted to reduce the wear of the hearth, and wear-resistant and fireproof plastic layers 3-3 are arranged on the inner surface of an inclined section KT, the inner surface of a second vertical section NR, the inner surface of a fourth inclined section RP and the inner surface of a third vertical section PQ of the hearth 3, so that the wear of the lower part of the hearth can be reduced.
Other compositions and connection relationships are the same as those of the first embodiment.
And a third specific embodiment: referring to fig. 11-13, a description is given of the present embodiment, in which a first row of pipes I9-1 and a second row of pipes I9-2 of the economizer 9 are respectively provided with a long protection tile I9-3, a short protection tile I9-4, a sheath I9-5 and a bent protection tile I9-6, the bent portion of the first row of pipes I9-1 and the bent portion of the second row of pipes I9-2 are respectively provided with a bent protection tile I9-6, the long protection tile I9-3 and the short protection tile I9-4 are buckled and welded together, the outer surfaces of the end portions of the long protection tile I9-3 are welded with the sheath I9-5, and the long protection tile I9-3, the short protection tile I9-4 and the sheath I9-5 form a group of wear-resistant components and are freely expanded, and a plurality of wear-resistant components are respectively provided on the first row of pipes I9-1 and the second row of pipes I9-2;
the long protection tiles I9-3, the short protection tiles I9-4, the sheath I9-5 and the bent protection tiles I9-6 on the first row of pipes I9-1 and the second row of pipes I9-2 of the economizer 9 are all made of 1Cr7SiAl or Q235A.
Other compositions and connection relationships are the same as those of the second embodiment.
The specific embodiment IV is as follows: in the present embodiment, referring to fig. 5, the plurality of wear-preventing plates 4-4 provided for each pipe I4-1 are divided into two groups, and the included angle α between two adjacent wear-preventing plates 4-4 in each group of wear-preventing plates 4-4 in the circumferential direction of the respective pipe I4-1 is 30 °. Other compositions and connection relationships are the same as those of the third embodiment.
Fifth embodiment: referring to fig. 14-16, in the present embodiment, a long protection tile 8-1-1, a short protection tile 8-1-2, a bent protection tile 8-1-4 and a sheath 8-1-3 are respectively disposed on a first row of tubes 8-1 and a second row of tubes 8-2 of the superheater 8, the bent protection tile 8-1-4 is respectively disposed at a bending position of the first row of tubes 8-1 and a bending position of the second row of tubes 8-2, the long protection tile 8-1-1 and the short protection tile 8-1-2 are buckled and welded together, the sheath 8-1-3 is welded on an outer surface of the long protection tile 8-1-1, the short protection tile 8-1-2 and the sheath 8-1-3 to form a group of wear-preventing devices, and multiple groups of wear-preventing devices are respectively sleeved on the first row of tubes 8-1 and the second row of tubes 8-2.
The arrangement protects the pipe on the superheater 8 from being worn and corroded by the smoke surface, prolongs the service life of the pipe, and can freely expand between the protection tiles to prevent cold and hot deformation.
Other compositions and connection relationships are the same as those of the fourth embodiment.
Specific embodiment six: referring to fig. 14, the first row of tubes 8-1 and the second row of tubes 8-2 of the superheater 8 according to the present embodiment are provided with the long protection tiles 8-1-1, the short protection tiles 8-1-2 and the sheath 8-1-3 made of 1Cr20Ni14Si2.
Other compositions and connection relationships are the same as those of the fifth embodiment.
Seventh embodiment: referring to fig. 17, the end of a tube plate 10-3 on an air preheater 10 according to the present embodiment is provided with an anti-wear tube 10-1, and a refractory concrete 10-2 is poured in the gap between two adjacent anti-wear tubes 10-1.
So configured, the tubes and tube sheets 10-3 on the air preheater 10 are protected from wear while acting as a seal.
Other compositions and connection relationships are the same as those of the sixth embodiment.
Eighth embodiment: in the present embodiment, the diameter of the wear prevention pipe 10-1 is the same as the diameter of the pipe on the air preheater 10, the length L1 of the wear prevention pipe 10-1 is 3 times the diameter of the pipe on the air preheater 10, and butt welding seal is adopted between the wear prevention pipe 10-1 and the pipe on the air preheater 10, as described with reference to fig. 17.
With this arrangement, the wear resistance and sealing of the tubes and tube sheets 10-3 on the air preheater 10 is improved.
Other compositions and connection relationships are the same as those of the seventh embodiment.
Detailed description nine: referring to fig. 17, the material of the wear prevention pipe 10-1 according to the present embodiment is Q235A, Q GNH, 09CrCuSb, or a ceramic pipe.
So arranged, corrosion is prevented.
Other compositions and connection relationships are the same as those of embodiment eight.
Detailed description ten: in the present embodiment, a distance L2 between the end of the coal feeding pipe 1 extending into the furnace 3 and the center of the furnace 3 in the thickness direction of the flat steel 3-2 is 10mm, which is described with reference to fig. 18 and 19.
By adopting the continuous fillet welding mode inside and outside the hearth 3, the welding strength is improved, the welding strength and the coal feeding pipe 1 expand in the same direction, and the welding tightness is improved.
Other compositions and connection relationships are the same as those of the embodiment nine.
Claims (8)
1. The utility model provides an environmental protection and energy saving type circulating fluidized bed boiler's abrasionproof and sealed and inflation integrated system which characterized in that: the device comprises a coal feeding pipe (1), a secondary air device (2), a hearth (3), a screen heating surface (4), a separator (5), a material returning device (6), a flue (7), a superheater (8), an economizer (9), an air preheater (10), a slag discharging pipe (11), a waveform expansion joint (12), two metal expansion joints (14) and three nonmetal expansion joints (13);
the hearth (3) is composed of a plurality of pipes (3-1) and a plurality of membrane water walls welded by flat steel (3-2);
the coal feeding pipe (1), the secondary air device (2), the slag discharging pipe (11), the inlet of the separator (5) and the outlet of the material returning device (6) are respectively welded with the hearth (3) in a sealing way, a first nonmetal expansion joint (13) is arranged between the outlet of the material returning device (6) and the hearth (3), a second nonmetal expansion joint (13) is arranged between the inlet of the separator (5) and the hearth, a first metal expansion joint (14) is arranged between the slag discharging pipe (11) and the hearth (3), a screen type heating surface (4) is arranged inside the hearth (3) and extends out of the hearth (3), the outlet of the separator (5) is connected with the inlet of the material returning device (6), the smoke outlet of the separator (5) is connected with the inlet of the flue (7) through a third nonmetal expansion joint (13), the inside of the flue (7) is provided with the superheater (8) and the economizer (9), the outlet of the economizer (9) is connected with the air preheater (10) through a second metal expansion joint (14), and the inner and outer side of the boiler (1) is welded with the coal pipe (1) in a wave form, and the inner side of the boiler (1) are welded with the coal pipe (3) in a wave form;
the screen type heating surface (4) is formed by a membrane type water-cooled wall formed by welding a pipe I (4-1) and a flat steel I (4-2), the intersection of the screen type heating surface (4) and the side wall of the hearth (3) is welded and sealed, the intersection of the screen type heating surface (4) and the side wall of the hearth (3) is provided with a wear-resistant fireproof plastic (4-3), and a plurality of wear-resistant sheets (4-4) are arranged on each pipe I (4-1) of the screen type heating surface (4) above the wear-resistant fireproof plastic (4-3); a plurality of threaded pins (15) are welded on two pipes (3-1) of the membrane water wall at the corner of the hearth (3) from top to bottom respectively, and the wear-resistant fireproof plastic (4-3) and the threaded pins (15) are cast into a whole;
the first row of pipes (8-1) and the second row of pipes (8-2) of the superheater (8) are respectively provided with a long protection tile (8-1-1), a short protection tile (8-1-2), a bent protection tile (8-1-4) and a sheath (8-1-3), the bent part of the first row of pipes (8-1) and the bent part of the second row of pipes (8-2) are respectively provided with a bent protection tile (8-1-4), the long protection tile (8-1-1) and the short protection tile (8-1-2) are buckled and welded together, the outer surfaces of the end parts of the long protection tile (8-1-1) are welded with a sheath (8-1-3), the long protection tile (8-1-1), the short protection tile (8-1-2) and the sheath (8-1-3) form a group of wear-resistant devices and expand freely, the first row of pipes (8-1) and the second row of pipes (8-2) are respectively provided with a plurality of groups of wear-resistant devices, and the wear-resistant pipes (10-10) of the end parts of the air preheater (10-10) are sleeved with two adjacent wear-resistant pipes (10-10).
2. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 1, wherein: the front membrane water wall and the rear membrane water wall at the lower part of the hearth (3) are divided into a vertical section (LX), a first inclined section (XK) and a second inclined section (KT) from top to bottom, the vertical section (LX), the first inclined section (XK) and the second inclined section (KT) are in smooth transition,
the side film type water-cooled wall at the lower part of the hearth (3) is divided into a first vertical section (GM), a third inclined section (MN), a second vertical section (NR), a fourth inclined section (RP) and a third vertical section (PQ) from top to bottom, the first vertical section (GM), the third inclined section (MN), the second vertical section (NR), the fourth inclined section (RP) and the third vertical section (PQ) are in smooth transition, the first inclined section (XK) and the third inclined section (MN) incline to the outside of the hearth (3), the second inclined section (KT) and the fourth inclined section (RP) incline to the inside of the hearth (3),
the inner surface of the second inclined section (KT), the inner surface of the second vertical section (NR), the inner surface of the fourth inclined section (RP) and the inner surface of the third vertical section (PQ) of the hearth (3) are respectively provided with a wear-resistant fireproof plastic layer (3-3).
3. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 2, wherein: the first row of pipes I (9-1) and the second row of pipes I (9-2) of the coal economizer (9) are respectively provided with a long protection tile I (9-3), a short protection tile I (9-4), a sheath I (9-5) and a bent protection tile I (9-6), the bent part of the first row of pipes I (9-1) and the bent part of the second row of pipes I (9-2) are respectively provided with a bent protection tile I (9-6), the long protection tile I (9-3) and the short protection tile I (9-4) are buckled and welded together, the outer surfaces of the end parts of the long protection tile I (9-3) are welded with a sheath I (9-5), the long protection tile I (9-3), the short protection tile I (9-4) and the sheath I (9-5) form a group of wear-resistant components and are freely expanded, and a plurality of wear-resistant components are respectively arranged on the first row of pipes I (9-1) and the second row of pipes I (9-2);
the long protection tiles I (9-3), the short protection tiles I (9-4), the sheath I (9-5) and the bent protection tiles I (9-6) on the first row of pipes I (9-1) and the second row of pipes I (9-2) of the coal economizer (9) are made of 1Cr7SiAl or Q235A.
4. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 3, wherein: the plurality of anti-abrasion pieces (4-4) arranged on each pipe I (4-1) are divided into two groups, and the included angle (alpha) of two adjacent anti-abrasion pieces (4-4) in each group of anti-abrasion pieces (4-4) in the circumferential direction of the respective pipe I (4-1) is 30 degrees.
5. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 1, wherein: the long protection tile (8-1-1), the short protection tile (8-1-2) and the sheath (8-1-3) of the superheater (8) are made of 1Cr20Ni14Si2.
6. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 1, wherein: the diameter of the anti-abrasion pipe (10-1) is the same as that of the pipe on the air preheater (10), the length (L1) of the anti-abrasion pipe (10-1) is 3 times that of the pipe on the air preheater (10), and butt welding sealing is adopted between the anti-abrasion pipe (10-1) and the pipe on the air preheater (10).
7. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 6, wherein: the anti-wear pipe 10-1 is made of Q235A, Q355GNH, 09CrCuSb or a ceramic pipe.
8. The integrated wear and seal and expansion system for an environmentally friendly energy efficient circulating fluidized bed boiler of claim 7, wherein: the distance (L2) between the end part of the coal feeding pipe (1) extending into the hearth (3) and the center of the flat steel (3-2) on the hearth (3) in the thickness direction is 10mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710400.XA CN108679601B (en) | 2018-07-02 | 2018-07-02 | Wear-resistant, sealing and expansion integrated system of environment-friendly and energy-saving circulating fluidized bed boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710400.XA CN108679601B (en) | 2018-07-02 | 2018-07-02 | Wear-resistant, sealing and expansion integrated system of environment-friendly and energy-saving circulating fluidized bed boiler |
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| CN108679601A CN108679601A (en) | 2018-10-19 |
| CN108679601B true CN108679601B (en) | 2023-12-19 |
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| CN110107877A (en) * | 2019-06-05 | 2019-08-09 | 福建省东锅节能科技有限公司 | The boiler and its working method of biological substance for combustion energy |
| CN112303617B (en) * | 2020-10-29 | 2022-12-06 | 哈尔滨锅炉厂有限责任公司 | Connecting device for connecting inlet flue of adiabatic separator with water-cooled separator |
| CN117906402B (en) * | 2024-03-19 | 2024-05-31 | 三明市丰润化工有限公司 | Energy-saving recovery device of sodium silicate kiln |
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| WO2015124007A1 (en) * | 2014-02-19 | 2015-08-27 | 王森 | Fluidized bed boiler with integration of multifunctional inertial gravity separators and multiple types of furnaces |
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| CN108679601A (en) | 2018-10-19 |
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