CN208139238U - High temperature and high pressure flue gas afterheat utilizing system - Google Patents
High temperature and high pressure flue gas afterheat utilizing system Download PDFInfo
- Publication number
- CN208139238U CN208139238U CN201820584561.4U CN201820584561U CN208139238U CN 208139238 U CN208139238 U CN 208139238U CN 201820584561 U CN201820584561 U CN 201820584561U CN 208139238 U CN208139238 U CN 208139238U
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- pipe
- flue gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003546 flue gas Substances 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 239000007789 gas Substances 0.000 claims description 46
- 239000003245 coal Substances 0.000 claims description 31
- 239000000835 fiber Substances 0.000 claims description 15
- 239000013589 supplement Substances 0.000 claims description 6
- 239000003034 coal gas Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 230000008646 thermal stress Effects 0.000 abstract description 9
- 239000002918 waste heat Substances 0.000 abstract description 9
- 230000008439 repair process Effects 0.000 abstract description 4
- 239000002817 coal dust Substances 0.000 description 13
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of high temperature and high pressure flue gas afterheat utilizing systems comprising drum, high temperature and pressure multitubular boiler and high temperature and high pressure flue gas heat-exchanger rig.The utility model has the advantage of, fire tube evaporator section, superheater section and economizer section are isolated from waste heat boiler, it is made into independent device, prevents high temperature and pressure multitubular boiler and the excessive temperature differentials at high temperature and high pressure flue gas heat-exchanger rig both ends from causing deflection excessive, avoids equipment damage；High temperature and pressure multitubular boiler uses flexible tube sheet close to upper chamber side, thermal stress has been buffered well, the pressure to common fire tube and extraordinary fire tube inlet end is reduced, the flow resistance for avoiding high-temperature flue gas caused by common fire tube and extraordinary fire tube inlet end deformation is big；The gap between gap and two neighboring second tube bundle group in high temperature and high pressure flue gas heat-exchanger rig between two neighboring first tube bundle group is larger, so that working space becomes larger, searches leak source and repairing is relatively easy, the repair time is short, and consuming cost is few.
Description
Technical field：
The utility model relates to fume afterheats to utilize equipment, and in particular to a kind of high temperature and high pressure flue gas afterheat utilizing system.
Background technique：
Waste heat boiler is generally made of fire tube evaporator section, high-pressure superheater, economizer, and size is larger, so waste heat boiler
The temperature difference of top and bottom is big, causes shell to generate biggish deflection, will cause equipment damage when serious.Waste heat boiler air inlet
The flue-gas temperature of mouth is mostly at 1000 DEG C or so, so that flat tube sheet thermal stress of the fire tube evaporator section close to air inlet side is larger, puts down
Tube sheet and boiler side walls cause the pore on flat tube sheet that can generate certain deformation using the Hard link form directly welded, right
Fire tube generates pressure and increases the flow resistance of high-temperature flue gas so that the inlet end of fire tube deforms；Fire tube is thermally stressed along axis
To meeting after deforming so that flat tube sheet also deforms along axial direction, since flat tube sheet and boiler side walls weld, close to edge
Deformability is poor, will lead to flat tube sheet and expendable deformation even damage occurs or cracks with the weld of boiler side walls.
Gap between waste heat boiler mesohigh steam superheater and the heat-exchanging tube bundle of economizer is 10mm, heat-exchanging tube bundle it
Between gap it is small cause heat exchanger tube central area system resistance big, the coal dust in raw gas be easy to center assemble, blocking,
When being cleared up using high pressure water, since space is limited, heat exchanger tube central area not easy cleaning can not be rinsed well；And coal dust
In have sulphur-containing substance, sulphur-containing substance is dissolved in water and forms acid solution after cleaning, and acid solution can corrode waste heat boiler, and clear up
There are oxygen in waste heat boiler afterwards, heat can be distributed when waste heat boiler is corroded, so that the coal dust firing in coal dust, causes
Damage, the leakage of heat-exchanging tube bundle；It is not easy to overhaul since the gap between heat-exchanging tube bundle is small after heat-exchanging tube bundle damage leakage, only
Inner tube can be arranged extraction to overhaul, integral replacing be needed if well damage, the repair time is long, and consuming cost is big.
Utility model content：
It is not easy dust stratification the purpose of this utility model is to provide a kind of, is hardly damaged, the high temperature and pressure cigarette that space for maintenance is big
Gas afterheat utilizing system.
The utility model is implemented by following technical solution：High temperature and high pressure flue gas afterheat utilizing system comprising drum, high temperature
High pressure multitubular boiler and high temperature and high pressure flue gas heat-exchanger rig；The drum water outlet of the drum is high by down-comer and the high temperature
The water inlet of banking fire pipe boiler is connected to, and the drum water inlet of the drum passes through tedge and the high temperature and pressure multitubular boiler
Water outlet connection；The steam (vapor) outlet of the drum is connected by the steam inlet pipe of steam pipe and the high temperature and high pressure flue gas heat-exchanger rig
Logical, the supplement water inlet of the drum is connected to by supplementing water pipe with the outlet pipe of the high temperature and high pressure flue gas heat-exchanger rig；Institute
The second gas inlet for stating the first gas exit and the high temperature and high pressure flue gas heat-exchanger rig of high temperature and pressure multitubular boiler passes through
Gas pipe connection.
Further, the high temperature and pressure multitubular boiler includes furnace body, the top of the furnace body be equipped with the first coal gas into
Mouthful, it is equipped with the first gas exit in the bottom end of the furnace body, is equipped with flexible tube sheet in the upper inside level of the furnace body, it is described
The edge of flexible tube sheet is bent upwards and welds with the inner wall of the furnace body；Flat pipe is equipped in the inner lower level of the furnace body
The inner wall of plate, the flat tube sheet and the furnace body welds；It is described flexibility tube sheet and the flat tube sheet by the inside of the furnace body from
Upper chamber, Heat Room and lower chamber are divided under；The lower sidewall of the Heat Room is equipped with the water inlet and blowdown
Mouthful, the side wall upper part of the Heat Room is equipped with the water outlet；
Several common fire tubes and several Gent kind fire tubes are equipped between the flexible tube sheet and the flat tube sheet, it is several
Special type fire tube described in root is close to the sidewall of the furnace body and along the circumferentially distributed of the furnace body, if several common fire tubes are located at
Special type fire tube described in dry root is between the furnace body axis；The upper end of the every common fire tube passes through the flexible tube sheet and institute
Upper chamber connection is stated, the lower end of the every common fire tube passes through the flat tube sheet and is connected to the lower chamber；The every spy
The upper end of kind fire tube passes through the flexible tube sheet and is connected to the upper chamber, and the lower end of the every extraordinary fire tube passes through described put down
Tube sheet is connected to the lower chamber.
Further, the top of the extraordinary fire tube is extension diameter section, and the lower part of the special type fire tube is equipped with expansion joint, described
The diameter of extension diameter section is more than or equal to the diameter of the expansion joint, and the diameter of the extension diameter section is greater than the diameter of the common fire tube；
It is inserted with the second fireproof inside the extension diameter section of the special type fire tube, the is integrally formed on the outer wall of second fireproof
Second gear fire ring, the second gear fire ring are placed in above the flexible tube sheet, the bottom surface of the second gear fire ring and the extraordinary fire
The top surface of pipe abuts, and is wound with the second fire-retardent fiber felt-rug on the second fireproof outer wall below the second gear fire ring,
The inner wall of the extension diameter section is bonded with second fire-retardent fiber felt-rug.
Further, be inserted with the first fireproof inside the common fire tube top, first fireproof it is outer
First gear fire ring is integrally formed on wall, the first gear fire ring is placed in above the flexible tube sheet, the bottom of the first gear fire ring
Face is abutted with the top surface of the common fire tube, is wound on the outer wall of first fireproof below the first gear fire ring
First fire-retardent fiber felt-rug, the inner wall of the common fire tube are bonded with first fire-retardent fiber felt-rug.
Further, the high temperature and high pressure flue gas heat-exchanger rig includes shell, is equipped with the second coal at the top of the shell
Gas import is equipped with the second gas exit on the lower sides of the shell, saves in the enclosure interior equipped with superheater Duan He
Coal device section, the superheater section are located at the top of the economizer section；
The superheater section includes at least one level superheater, when having two-stage or two-stage the above superheater, institute
There is the superheater to arrange along the body height direction, the steam output end of the steam outlet pipe of superheater described in higher level and institute of junior
State the admission end connection of the steam inlet pipe of superheater；Described in the superheater positioned at superheater section bottom into
The side wall that the admission end of steam pipe passes through the shell is placed in the outside of the shell, the mistake at the top of the superheater section
The side wall that the steam output end of the steam outlet pipe of thermal passes through the shell is placed in the outside of the shell；
The economizer section includes at least one level coal saving device, when having two-stage or two-stage the above coal saving device, institute
There is the coal saving device to arrange along the body height direction, the water outlet of the outlet pipe of coal saving device described in higher level is under
The water inlet end connection of the water inlet pipe of the grade coal saving device；Described in the coal saving device positioned at economizer section bottom into
The side wall that the water inlet end of water pipe passes through the shell is placed in the outside of the shell, the province at the top of the economizer section
The side wall that the water outlet of the outlet pipe of device for coal passes through the shell is placed in the outside of the shell.
Further, the superheater includes the steam inlet pipe and the steam outlet pipe, and the steam inlet pipe goes out described in
The lower section of steam pipe, is equipped with several first tube bundle groups for being parallel to each other between the steam inlet pipe and the steam outlet pipe, and described the
The admission end of one tube bank group is connected to the steam inlet pipe, and the steam output end of the first tube bundle group is connected to the steam outlet pipe.
Further, the gap between the two neighboring first tube bundle group is h1, and each first tube bundle group includes
At least two first tube bundles disposed in parallel, the gap in each first tube bundle group between the two neighboring first tube bundle
It is more than or equal to h2 for h2, h1, each first tube bundle includes the snakelike steam pipe that more axis are in the same plane；Adjacent
It is horizontal between the top of two first tube bundle groups to be equipped with first gear tracheae, the first gear tracheae and the first tube bundle group
In parallel, the length of the first gear tracheae is equal to the width of the first tube bundle.
Further, the coal saving device includes the water inlet pipe and the outlet pipe, and the water inlet pipe goes out described in
The lower section of water pipe, is equipped with several second tube bundle groups for being parallel to each other between the water inlet pipe and the outlet pipe, and described the
The water inlet end of two tube bank groups is connected to the water inlet pipe, and the water outlet of the second tube bundle group is connected to the outlet pipe.
Further, the gap between the two neighboring second tube bundle group is h3, and each second tube bundle group includes
At least two second tube bundles disposed in parallel, the gap in each second tube bundle group between the two neighboring second tube bundle
It is more than or equal to h4 for h4, h3, each second tube bundle includes the snakelike conduit that more axis are in the same plane；Adjacent
Horizontal between two second tube bundle groups to be equipped with second gear tracheae, the second gear tracheae is parallel with the second tube bundle group,
The length of the second gear tracheae is equal to the width of the second tube bundle.
The advantages of the utility model：1, fire tube evaporator section, superheater section and economizer section are isolated from waste heat boiler,
It is made into independent device, prevents high temperature and pressure multitubular boiler and the excessive temperature differentials at high temperature and high pressure flue gas heat-exchanger rig both ends from causing to become
Shape amount is excessive, avoids equipment damage；2, high temperature and pressure multitubular boiler uses flexible tube sheet close to upper chamber side, flexible
Tube sheet edge is bent upwards, and can be very good buffering thermal stress, reduces the pressure to common fire tube and extraordinary fire tube inlet end,
The flow resistance for avoiding high-temperature flue gas caused by common fire tube and extraordinary fire tube inlet end deformation is big, while thermal stress is delayed
Flexible tube sheet deformed damaged is avoided after punching；3, the lower part of extraordinary fire tube is equipped with expansion joint, can buffer the axial direction of extraordinary fire tube
Deformation generates pressure to flat tube sheet after preventing extraordinary fire tube from axial deformation occurs, and occurs so as to avoid flat tube sheet irrecoverable
Deformation even damage or crack with the welds of boiler side walls；4, since the gap between two neighboring first tube bundle group is greater than
Gap in first tube bundle group between adjacent first tube bundle, after raw gas enters superheater section, with coal dust towards adjacent two
Gap movement between a first tube bundle group, reduces the coal dust accumulation of superheater section center；Two neighboring second pipe
Gap between beam group is greater than the gap in second tube bundle group between two neighboring second tube bundle, similarly, economizer section center
Coal dust accumulation decrease, alleviate clear dirt pressure；Coal dust accumulation rinses after reducing without using high pressure water, prevents
Block gas, which enters in shell, makes sulfur dioxide, sulfureted hydrogen burning, avoids first tube bundle and the burned damage of second tube bundle；5,
The gap between gap and two neighboring second tube bundle group between two neighboring first tube bundle group is larger, so that working space becomes
Greatly, it searches leak source and repairing is relatively easy, the repair time is short, and consuming cost is few.
Detailed description of the invention：
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structural schematic diagram of high temperature and pressure multitubular boiler；
Fig. 3 is the partial enlarged view of part A in Fig. 2；
Fig. 4 is the structural schematic diagram of the extraordinary fire tube of high temperature and pressure multitubular boiler；
Fig. 5 is the structural schematic diagram of high temperature and high pressure flue gas heat-exchanger rig；
Fig. 6 is the partial enlarged view of C portion in Fig. 5；
Fig. 7 is the partial enlarged view of part B in Fig. 5.
Drum 1, high temperature and pressure multitubular boiler 2, high temperature and high pressure flue gas heat-exchanger rig 3, down-comer 4, tedge 5 supplement water
Pipe 6, gas pipe 7, steam pipe 8, furnace body 9, flexible tube sheet 10, flat tube sheet 11, upper chamber 12, Heat Room 13, lower chamber 14, commonly
Fire tube 15, extraordinary fire tube 16, extension diameter section 16-1, expansion joint 16-2, the second fireproof 17, second gear fire ring 18, the second fire resisting
Fibrofelt 19, the first fireproof 20, first gear fire ring 21, the first fire-retardent fiber felt-rug 22, shell 23, coal saving device 24, water outlet
Pipe 25, water inlet pipe 26, superheater 27, steam inlet pipe 28, steam outlet pipe 29, first tube bundle group 30, first tube bundle 31, snakelike steam pipe
32, first gear tracheae 33, second tube bundle group 34, second tube bundle 35, snakelike conduit 36, second gear tracheae 37.
Specific embodiment：
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1：
As shown in Figure 1, high temperature and high pressure flue gas afterheat utilizing system comprising drum 1, high temperature and pressure multitubular boiler 2 and height
Warm high pressure smoke heat replacing device 3；The drum water outlet of drum 1 is connected by the water inlet of down-comer 4 and high temperature and pressure multitubular boiler 2
Logical, the drum water inlet of drum 1 is connected to by tedge 5 with the water outlet of high temperature and pressure multitubular boiler 2；The steam of drum 1 goes out
Mouth is connected to by steam pipe 8 with the steam inlet pipe 28 of high temperature and high pressure flue gas heat-exchanger rig 3, and the supplement water inlet of drum 1 passes through supplement
Water pipe 6 is connected to the outlet pipe 25 of high temperature and high pressure flue gas heat-exchanger rig 3；First gas exit of high temperature and pressure multitubular boiler 2 with
Second gas inlet of high temperature and high pressure flue gas heat-exchanger rig 3 is connected to by gas pipe 7.
As in Figure 2-4, high temperature and pressure multitubular boiler 2 includes furnace body 9, is equipped with the first gas inlet on the top of furnace body 9,
It is equipped with the first gas exit in the bottom end of furnace body 9, is equipped with flexible tube sheet 10, flexible tube sheet 10 in the upper inside level of furnace body 9
Edge be bent upwards and with the inner wall of furnace body 9 weld；Flat tube sheet 11, flat tube sheet 11 are equipped in the inner lower level of furnace body 9
It is welded with the inner wall of furnace body 9；The peaceful tube sheet 11 of flexible tube sheet 10 by the inside of furnace body 9 be divided into from top to bottom upper chamber 12,
Heat Room 13 and lower chamber 14；The lower sidewall of Heat Room 13 is equipped with water inlet and sewage draining exit, and the side wall upper part of Heat Room 13 is set
There is water outlet；
It is equipped with several common fire tubes 15 and several Gent kind fire tubes 16 between the peaceful tube sheet 11 of flexible tube sheet 10, it is several
For Gent kind fire tube 16 close to 9 side wall of furnace body and along the circumferentially distributed of furnace body 9, several common fire tubes 15 are located at several Gent kind fire
Pipe 16 is between 9 axis of furnace body；The upper end of every common fire tube 15 passes through flexible tube sheet 10 and is connected to upper chamber 12, and every common
The lower end of fire tube 15 passes through flat tube sheet 11 and is connected to lower chamber 14；The upper end of every Gent kind fire tube 16 pass through flexible tube sheet 10 with it is upper
Gas chamber 12 is connected to, and the lower end of every Gent kind fire tube 16 passes through flat tube sheet 11 and is connected to lower chamber 14.
The top of extraordinary fire tube 16 is extension diameter section 16-1, and the lower part of extraordinary fire tube 16 is equipped with expansion joint 16-2, extension diameter section 16-
1 diameter is more than or equal to the diameter of expansion joint 16-2, convenient for being taken out from Heat Room 13 when the replacement of extraordinary fire tube 16, extension diameter section
The diameter of 16-1 is greater than the diameter of common fire tube 15；The second fireproof is inserted with inside the extension diameter section 16-1 of extraordinary fire tube 16
17, second gear fire ring 18 is integrally formed on the outer wall of the second fireproof 17, second gear fire ring 18 is placed in flexible 10 top of tube sheet,
The bottom surface of second gear fire ring 18 is abutted with the top surface of extraordinary fire tube 16, and second gear fire ring 18, which had both played, prevents the second fireproof 17
Along the effect of extraordinary 16 slide downward of fire tube, but can prevent high-temperature gas enter extraordinary fire tube 16 and the second fireproof 17 it
Between, avoid extraordinary 16 top thermal stress of fire tube is excessive extraordinary fire tube 16 is caused to damage；Second fire prevention of 18 lower section of second gear fire ring
The second fire-retardent fiber felt-rug 19 is wound on 17 outer wall of sheath, the inner wall of extension diameter section 16-1 is bonded with the second fire-retardent fiber felt-rug 19.
It is inserted with the first fireproof 20 inside common 15 top of fire tube, is integrally formed on the outer wall of the first fireproof 20
First gear fire ring 21, first gear fire ring 21 are placed in flexible 10 top of tube sheet, the bottom surface of first gear fire ring 21 and common fire tube 15
Top surface abuts, and first gear fire ring 21 not only plays the role of preventing the first fireproof 20 along common 15 slide downward of fire tube, but also energy
It prevents high-temperature gas from entering between common fire tube 15 and the first fireproof 20, avoids common 15 top thermal stress of fire tube is excessive from leading
Common fire tube 15 is caused to damage；The first fire-retardent fiber felt-rug is wound on the outer wall of first fireproof 20 of 21 lower section of first gear fire ring
22, the inner wall of common fire tube 15 is bonded with the first fire-retardent fiber felt-rug 22.
As illustrated in figs. 5-7, high temperature and high pressure flue gas heat-exchanger rig 3 includes shell 23, is equipped with the second coal at the top of shell 23
Gas import is equipped with the second gas exit on the lower sides of shell 23, and superheater section and economizer are equipped with inside shell 23
Section, superheater section are located at the top of economizer section；
Superheater section includes level-one superheater 27, and superheater 27 includes steam inlet pipe 28 and steam outlet pipe 29, steam inlet pipe 28
Positioned at the lower section of steam outlet pipe 29, the side wall that the admission end of steam inlet pipe 28 passes through shell 23 is placed in the outside of shell 23, steam outlet pipe 29
Steam output end pass through the side wall of shell 23 and be placed in the outside of shell 23；Embodiments thereof may also include two-stage or two-stage or more and overheat
Device 27, when having two-stage or the above superheater 27 of two-stage, all superheaters 27 are arranged along 23 short transverse of shell, higher level
The steam output end of the steam outlet pipe 29 of superheater 27 is connected to the admission end of the steam inlet pipe 28 of junior superheater 27；Positioned at superheater
The side wall that the admission end of the steam inlet pipe 28 of the superheater 27 of section bottom passes through shell 23 is placed in the outside of shell 23, is located at overheat
The side wall that the steam output end of the steam outlet pipe 29 of superheater 27 at the top of device section passes through shell 23 is placed in the outside of shell 23.
It is set between steam inlet pipe 28 and steam outlet pipe 29 there are five the first tube bundle group 30 being parallel to each other, first tube bundle group 30
Admission end is connected to steam inlet pipe 28, and the steam output end of first tube bundle group 30 is connected to steam outlet pipe 29.Two neighboring first tube bundle group 30
Between gap h1 be 20mm, each first tube bundle group 30 include three first tube bundles 31 disposed in parallel, each first tube bundle
Gap h2 in group 30 between two neighboring first tube bundle 31 is 10mm, and each first tube bundle 31 includes three axis positioned at same
Snakelike steam pipe 32 in plane；It is horizontal between the top of two adjacent first tube bundle groups 30 to be equipped with first gear tracheae 33, first
Gear tracheae 33 is parallel with first tube bundle group 30, and the length of first gear tracheae 33 is equal to the width of first tube bundle 31.
Economizer section includes level-one coal saving device 24, and coal saving device 24 includes water inlet pipe 26 and outlet pipe 25, water inlet pipe 26
Positioned at the lower section of outlet pipe 25, the side wall that the water inlet end of water inlet pipe 26 passes through shell 23 is placed in the outside of shell 23, outlet pipe 25
Water outlet pass through the side wall of shell 23 and be placed in the outside of shell 23；Embodiments thereof may also include two-stage or two-stage or more and save coal
Device 24, when having two-stage or the above coal saving device 24 of two-stage, all coal saving device 24 are arranged along 23 short transverse of shell, higher level
The water outlet of the outlet pipe 25 of coal saving device 24 is connected to the water inlet end of the water inlet pipe 26 of junior coal saving device 24；Positioned at economizer
The side wall that the water inlet end of the water inlet pipe 26 of the coal saving device 24 of section bottom passes through shell 23 is placed in the outside of shell 23, is located at and saves coal
The side wall that the water outlet of the outlet pipe 25 of coal saving device 24 at the top of device section passes through shell 23 is placed in the outside of shell 23.
It is set between water inlet pipe 26 and outlet pipe 25 there are five the second tube bundle group 34 being parallel to each other, second tube bundle group 34
Water inlet end is connected to water inlet pipe 26, and the water outlet of second tube bundle group 34 is connected to outlet pipe 25.Two neighboring second tube bundle group 34
Between gap h3 be 20mm, each second tube bundle group 34 include three second tube bundles 35 disposed in parallel, each second tube bundle
Gap h4 in group 34 between two neighboring second tube bundle 35 is 10mm, and each second tube bundle 35 includes three axis positioned at same
Snakelike conduit 36 in plane；It is horizontal between two adjacent second tube bundle groups 34 to be equipped with second gear tracheae 37, second gear tracheae
37 is parallel with second tube bundle group 34, and the length of second gear tracheae 37 is equal to the width of second tube bundle 35.
Working principle：
High temperature rough gas initially enters the upper chamber 12 of high temperature and pressure multitubular boiler 2, and the edge of flexible tube sheet 10 is upward
Bending, has buffered the thermal stress of flexible tube sheet 10 radially well, reduces to 16 air inlet of common fire tube 15 and extraordinary fire tube
The pressure at end, the flow resistance for avoiding high-temperature flue gas caused by common fire tube 15 and extraordinary 16 inlet end of fire tube deformation is big,
Thermal stress avoids flexible 10 deformed damaged of tube sheet after being buffered simultaneously；
High temperature rough gas enters common fire tube 15 and extraordinary fire tube 16 from upper chamber 12, plugs on the top of common fire tube 15
Have the first fireproof 20, be wound with the first fire-retardent fiber felt-rug 22 on the outer wall of the first fireproof 20, common fire tube 15 it is interior
Wall is bonded with the first fire-retardent fiber felt-rug 22, ensure that leakproofness.The second fire prevention is inserted in the extension diameter section 16-1 of extraordinary fire tube 16
Sheath 17, is wound with the second fire-retardent fiber felt-rug 19 on the outer wall of the second fireproof 17, the inner wall of extraordinary fire tube 16 and second resistance to
Fiery fibrofelt 19 is bonded, and ensure that leakproofness.The thermal stress of flexible 10 edge of tube sheet is larger, and the lower part of extraordinary fire tube 16 is equipped with
Expansion joint 16-2 can buffer the axial deformation of extraordinary fire tube 16, to flat tube sheet after preventing extraordinary fire tube 16 from axial deformation occurs
11 generate pressure, and expendable deformation even damage occurs so as to avoid flat tube sheet 11 or opens with the weld of boiler side walls
It splits；The top of extraordinary fire tube 16 is extension diameter section 16-1, can be with buffering flexible tube sheet 10 close to the radial deformation of edge.
High-temperature water in drum 1 is entered inside Heat Room 13 by down-comer 4, and high temperature rough gas is in common fire tube 15 and spy
In kind of fire tube 16 and Heat Room 13 inside high-temperature water exchange heat, high-temperature water heat absorption heating vaporization, steam with heat up after
High-temperature water is discharged from water outlet, returns to drum 1 by tedge 5；Saturated vapor in drum 1 enters high temperature by steam pipe 8
In the superheater section of high pressure smoke heat replacing device 3, enters lower chamber 14 after high-temperature gas cooling, finally arranged from the first gas exit
Out, high temperature and high pressure flue gas heat-exchanger rig 3 is entered by gas pipe 7.
After high temperature rough gas enters high temperature and high pressure flue gas heat-exchanger rig 3, superheater section is first passed through, it is adjacent in superheater section
Horizontal between the top of two first tube bundle groups 30 to be equipped with first gear tracheae 33, first gear tracheae 33 makes at the top of superheater section
Gap is evenly distributed, and avoids high temperature rough gas directly from the gap between two adjacent first tube bundle groups 30 caused by
Heat exchange is uneven；It after high temperature rough gas enters superheater section, exchanges heat with the saturated vapor in snakelike steam pipe 32, saturated vapor is inhaled
Become superheated steam after heat, while the temperature of high temperature rough gas reduces；Due to the gap between two neighboring first tube bundle group 30
H1 is 20mm, greater than the gap h2 between first tube bundle 31 every two adjacent in first tube bundle group 30, so in raw gas
Coal dust is moved towards the gap between two neighboring first tube bundle group 30, reduces the coal dust accumulation of superheater section center
Amount；
High temperature rough gas enters economizer section after coming out from superheater section, two adjacent second tube bundle groups in economizer section
Horizontal between 34 top to be equipped with second gear tracheae 37, second gear tracheae 37 makes the gap at the top of economizer section be evenly distributed,
It is directly uneven by caused heat exchange from the gap between two adjacent second tube bundle groups 34 to avoid high temperature rough gas；High temperature
It after raw gas enters economizer section, exchanges heat with the boiler water in snakelike conduit 36, temperature increases after boiler water heat absorption, passes through
It supplements water pipe 6 and enters drum 1, while the temperature of high temperature rough gas further decreases；Due to two neighboring second tube bundle group 34 it
Between gap h3 be 20mm, greater than in second tube bundle group 34 per the gap h4 between two adjacent second tube bundles 35, so slightly
Coal dust in coal gas is moved towards the gap between two neighboring second tube bundle group 34, reduces the coal of economizer section center
Dust accumulation；After the coal dust accumulation of superheater section and economizer section center is reduced, the clear of exchange thermal is alleviated
Dirt pressure, coal dust accumulation reduce after without using high pressure water rinse, prevent oxygen enter in shell 23 make sulfur dioxide,
Sulfureted hydrogen burning avoids first tube bundle 31 and the burned damage of second tube bundle 35；Between two neighboring first tube bundle group 30
Gap between gap and two neighboring second tube bundle group 34 is larger, so that working space becomes larger, searches leak source and repairing is opposite
Simply, the repair time is short, and consuming cost is few.
High temperature rough gas from economizer section come out after, from the second gas exit draw, into rear system.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. high temperature and high pressure flue gas afterheat utilizing system, which is characterized in that it includes that drum, high temperature and pressure multitubular boiler and high temperature are high
Press smoke heat replacing device；The drum water outlet of the drum is connected by the water inlet of down-comer and the high temperature and pressure multitubular boiler
Logical, the drum water inlet of the drum is connected to by tedge with the water outlet of the high temperature and pressure multitubular boiler；The drum
Steam (vapor) outlet be connected to the steam inlet pipe of the high temperature and high pressure flue gas heat-exchanger rig by steam pipe, the supplement water of the drum into
Mouth is connected to by supplementing water pipe with the outlet pipe of the high temperature and high pressure flue gas heat-exchanger rig；The of the high temperature and pressure multitubular boiler
One gas exit is connected to the second gas inlet of the high temperature and high pressure flue gas heat-exchanger rig by gas pipe.
2. high temperature and high pressure flue gas afterheat utilizing system according to claim 1, which is characterized in that the high temperature and pressure fire tube
Boiler includes furnace body, is equipped with the first gas inlet on the top of the furnace body, is equipped with the first coal gas in the bottom end of the furnace body and goes out
Mouthful, be equipped with flexible tube sheet in the upper inside level of the furnace body, the edge of the flexibility tube sheet be bent upwards and with the furnace
The inner wall of body welds；Flat tube sheet, the inner wall weldering of the flat tube sheet and the furnace body are equipped in the inner lower level of the furnace body
It connects；It is described flexibility tube sheet and the flat tube sheet by the inside of the furnace body be divided into from top to bottom upper chamber, Heat Room and under
Gas chamber；The lower sidewall of the Heat Room is equipped with the water inlet and sewage draining exit, and the side wall upper part of the Heat Room is equipped with described
Water outlet；
Several common fire tubes and several Gent kind fire tubes, several institutes are equipped between the flexible tube sheet and the flat tube sheet
Extraordinary fire tube is stated close to the sidewall of the furnace body and along the circumferentially distributed of the furnace body, several common fire tubes are located at several
The special type fire tube is between the furnace body axis；The upper end of the every common fire tube pass through the flexible tube sheet and it is described on
Gas chamber connection, the lower end of the every common fire tube pass through the flat tube sheet and are connected to the lower chamber；The every extraordinary fire
The upper end of pipe passes through the flexible tube sheet and is connected to the upper chamber, and the lower end of the every extraordinary fire tube passes through the flat tube sheet
It is connected to the lower chamber.
3. high temperature and high pressure flue gas afterheat utilizing system according to claim 2, which is characterized in that it is described special type fire tube it is upper
Portion is extension diameter section, and the lower part of the special type fire tube is equipped with expansion joint, and the diameter of the extension diameter section is more than or equal to the expansion joint
Diameter, the diameter of the extension diameter section are greater than the diameter of the common fire tube；The is inserted with inside the extension diameter section of the special type fire tube
Two fireproofs, second gear fire ring is integrally formed on the outer wall of second fireproof, and the second gear fire ring is placed in described
Above flexible tube sheet, the bottom surface of the second gear fire ring is abutted with the top surface of the extraordinary fire tube, below the second gear fire ring
The second fireproof outer wall on be wound with the second fire-retardent fiber felt-rug, the inner wall of the extension diameter section and second fire resisting are fine
Tie up felt fitting.
4. high temperature and high pressure flue gas afterheat utilizing system according to claim 2 or 3, which is characterized in that the common fire tube
It is inserted with the first fireproof inside top, is integrally formed with first gear fire ring on the outer wall of first fireproof, described
One gear fire ring is placed in above the flexible tube sheet, and the bottom surface of the first gear fire ring is abutted with the top surface of the common fire tube, institute
It states and is wound with the first fire-retardent fiber felt-rug on the outer wall of first fireproof below first gear fire ring, the common fire tube
Inner wall is bonded with first fire-retardent fiber felt-rug.
5. high temperature and high pressure flue gas afterheat utilizing system according to claim 1, which is characterized in that the high temperature and high pressure flue gas
Heat-exchanger rig includes shell, is equipped with the second gas inlet at the top of the shell, is equipped on the lower sides of the shell
Second gas exit is equipped with superheater section and economizer section in the enclosure interior, and the superheater section is located at the economizer
The top of section；
The superheater section includes at least one level superheater, when having two-stage or two-stage the above superheater, Suo Yousuo
It states superheater to arrange along the body height direction, mistake described in the steam output end of the steam outlet pipe of superheater described in higher level and junior
The admission end of the steam inlet pipe of thermal is connected to；Positioned at the steam inlet pipe of the superheater of superheater section bottom
Admission end pass through the side wall of the shell and be placed in the outside of the shell, described at the top of the superheater section crosses hot charging
The side wall that the steam output end for the steam outlet pipe set passes through the shell is placed in the outside of the shell；
The economizer section includes at least one level coal saving device, when having two-stage or two-stage the above coal saving device, Suo Yousuo
It states coal saving device to arrange along the body height direction, the water outlet of the outlet pipe of coal saving device described in higher level and institute of junior
State the water inlet end connection of the water inlet pipe of coal saving device；The water inlet pipe positioned at the coal saving device of economizer section bottom
Water inlet end pass through the side wall of the shell and be placed in the outside of the shell, province's coal dress at the top of the economizer section
The side wall that the water outlet for the outlet pipe set passes through the shell is placed in the outside of the shell.
6. high temperature and high pressure flue gas afterheat utilizing system according to claim 5, which is characterized in that the superheater includes
The steam inlet pipe and the steam outlet pipe, the steam inlet pipe are located at the lower section of the steam outlet pipe, in the steam inlet pipe and the vapour out
Several first tube bundle groups being parallel to each other are equipped between pipe, the admission end of the first tube bundle group is connected to the steam inlet pipe,
The steam output end of the first tube bundle group is connected to the steam outlet pipe.
7. high temperature and high pressure flue gas afterheat utilizing system according to claim 6, which is characterized in that two neighboring described first
Gap between tube bank group is h1, and each first tube bundle group includes at least two first tube bundles disposed in parallel, Mei Gesuo
Stating the gap in first tube bundle group between the two neighboring first tube bundle is h2, and h1 is more than or equal to h2, each first pipe
Beam includes the snakelike steam pipe that more axis are in the same plane；It is horizontal between the top of the first tube bundle group of adjacent two
Equipped with first gear tracheae, the first gear tracheae is parallel with the first tube bundle group, and the length of the first gear tracheae is equal to institute
State the width of first tube bundle.
8. high temperature and high pressure flue gas afterheat utilizing system according to claim 5, which is characterized in that the coal saving device includes
The water inlet pipe and the outlet pipe, the water inlet pipe is located at the lower section of the outlet pipe, in the water inlet pipe and the water outlet
Several second tube bundle groups being parallel to each other are equipped between pipe, the water inlet end of the second tube bundle group is connected to the water inlet pipe,
The water outlet of the second tube bundle group is connected to the outlet pipe.
9. high temperature and high pressure flue gas afterheat utilizing system according to claim 8, which is characterized in that two neighboring described second
Gap between tube bank group is h3, and each second tube bundle group includes at least two second tube bundles disposed in parallel, Mei Gesuo
Stating the gap in second tube bundle group between the two neighboring second tube bundle is h4, and h3 is more than or equal to h4, each second pipe
Beam includes the snakelike conduit that more axis are in the same plane；It is horizontal between the second tube bundle group of adjacent two to be equipped with the
Second gear tracheae, the second gear tracheae is parallel with the second tube bundle group, and the length of the second gear tracheae is equal to described second
The width of tube bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820584561.4U CN208139238U (en) | 2018-04-23 | 2018-04-23 | High temperature and high pressure flue gas afterheat utilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820584561.4U CN208139238U (en) | 2018-04-23 | 2018-04-23 | High temperature and high pressure flue gas afterheat utilizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208139238U true CN208139238U (en) | 2018-11-23 |
Family
ID=64293463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820584561.4U Withdrawn - After Issue CN208139238U (en) | 2018-04-23 | 2018-04-23 | High temperature and high pressure flue gas afterheat utilizing system |
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| Country | Link |
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| CN (1) | CN208139238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
| CN117267696A (en) * | 2023-09-19 | 2023-12-22 | 中国石油大学(华东) | Abrasion-resistant waste heat boiler for high-dust-content high-temperature gas |
-
2018
- 2018-04-23 CN CN201820584561.4U patent/CN208139238U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
| CN110056848B (en) * | 2018-04-23 | 2024-05-03 | 新能能源有限公司 | High-temperature high-pressure flue gas waste heat utilization system |
| CN117267696A (en) * | 2023-09-19 | 2023-12-22 | 中国石油大学(华东) | Abrasion-resistant waste heat boiler for high-dust-content high-temperature gas |
| CN117267696B (en) * | 2023-09-19 | 2024-08-06 | 中国石油大学(华东) | Abrasion-resistant waste heat boiler for high-dust-content high-temperature gas |
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