CN219014327U - System is reformed transform to msw incineration boiler - Google Patents
System is reformed transform to msw incineration boiler Download PDFInfo
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- CN219014327U CN219014327U CN202223043539.4U CN202223043539U CN219014327U CN 219014327 U CN219014327 U CN 219014327U CN 202223043539 U CN202223043539 U CN 202223043539U CN 219014327 U CN219014327 U CN 219014327U
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- temperature superheater
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- 239000012528 membrane Substances 0.000 claims abstract description 36
- 238000004056 waste incineration Methods 0.000 claims abstract description 29
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000009466 transformation Effects 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000002893 slag Substances 0.000 claims description 19
- 239000002956 ash Substances 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims description 8
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims 1
- 239000013049 sediment Substances 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Abstract
The utility model relates to a transformation system of a waste incineration boiler, which comprises a first channel membrane water-cooling wall, a second channel membrane water-cooling wall, a third channel membrane water-cooling wall and an economizer, wherein a first-stage evaporator, a high-temperature superheater, a medium-temperature superheater and a low-temperature superheater are sequentially arranged in the third channel membrane water-cooling wall. The side heat insulation furnace wall and the rear arch heat insulation furnace wall of the garbage incinerator are paved with silicon carbide pouring material layers in the garbage incinerator to form a water-cooled wall structure, the second channel membrane type water-cooled wall is provided with 5 evaporation tube panels, the water-cooled wall of the second channel adopts an upper header and a lower header, the middle part of the water-cooled wall of the second channel is provided with a convection tube panel structure, the primary evaporator is of a coiled tube structure, and the high-temperature superheater is of a double-winding coiled tube structure convection tube. The utility model improves the capacity of the waste heat boiler while improving the garbage disposal capacity, generates more steam, increases the heating value and improves the economic benefit of garbage incineration plants.
Description
Technical Field
The utility model relates to the field of boiler transformation, in particular to a waste incineration boiler transformation system which can be applied to the boiler capacity improvement and capacity expansion of the waste incineration industry.
Background
In recent years, the domestic waste incineration industry in China enters a rapid development stage, and waste incineration plants are increased year by year. The waste incineration plants built in early stages are mostly designed with lower heat value, the corresponding hearth structures and the like mostly adopt heat-insulating furnace walls, the corresponding household garbage yield, heat value and the like are increased year by year along with the improvement of the living standard of urban people in China, and the waste incineration furnace cannot adapt to the increased garbage yield.
At present, a plurality of domestic cities face the problem of how to reform the traditional garbage incinerator, and in order to reduce the cost and increase the efficiency, the improvement of energy production of the boiler is promoted. In order to save data and realize effective utilization of the old garbage incinerator, the original heat-insulating furnace wall can be changed into a water-cooling furnace wall, and the heat-exchanging surface of the boiler can be adjusted. These retrofit measures have been applied in part to new boiler plants, but currently there are fewer capacity upgrades to old boilers. The old boiler is not transformed, and is subject to elimination, so that the resource waste and the updating are both realized, and the cost is higher, so that the capacity improvement and transformation of the boiler are urgently needed at present.
Disclosure of Invention
The utility model aims to solve the problems that an old garbage incineration furnace adopts a heat-insulating furnace structure, the structure has good adaptability to low-heat-value garbage and cannot be operated in overload for a long time, and provides a garbage incineration boiler transformation system which is used for improving the capacity of a garbage incineration boiler so as to improve the equipment capacity and the equipment data utilization rate in a short time.
The utility model provides a modification system of a waste incineration boiler, which comprises a hopper, a bypass cracking device, a pusher and a waste incineration furnace which are sequentially communicated, wherein the bottom of the waste incineration furnace is sequentially communicated with a drying grate, a combustion grate, a burning ashes grate and a slag falling pipe, the bottom of the combustion grate is provided with a slag leakage hopper and a first scraper conveyor, an exhaust passage at the upper part of the waste incineration furnace is sequentially provided with a snakelike coal economizer which is provided with a first channel membrane water-cooled wall, a second channel membrane water-cooled wall, a third channel membrane water-cooled wall and a tail shaft, a first-stage evaporator, a high-temperature superheater, a medium-temperature superheater and a low-temperature superheater are sequentially arranged in the third channel membrane water-cooled wall, the lower parts of the second channel membrane water-cooled wall and the third channel membrane water-cooled wall are sequentially communicated with the burning ashes grate through a spiral conveyor and an ash discharging pipe, and the bottom of the coal economizer is sequentially communicated with the slag falling pipe through a second scraper conveyor and the ash falling pipe.
The side heat-insulating furnace wall and the rear arch heat-insulating furnace wall of the garbage incinerator are paved with silicon carbide pouring material layers in the garbage incinerator to form a water-cooled wall structure, the second channel membrane type water-cooled wall is provided with 5 evaporation tube panels, the water-cooled wall of the second channel adopts an upper header and a lower header, the middle part of the water-cooled wall is provided with a convection tube panel structure, and convection tubes of the convection tube panel structure are connected through a movable structure; the primary evaporator is of a coiled pipe structure, and the high-temperature superheater is of a convection pipe of a double-winding coiled pipe structure.
Preferably, the tube panel of the water-cooled wall structure adopts a tube with the diameter of 60mm, the pitch of the tube is 90mm, and the refractory material adopts a SiC85% castable structure.
Preferably, the evaporation tube panel of the second channel membrane water wall adopts a tube with phi 42mm, and the pitch of the tube is 53mm.
Preferably, three tubes of the serpentine tube structure are disposed around.
Based on the technical scheme, the utility model has the advantages that:
the system for modifying the waste incineration boiler can improve the treatment capacity of the original waste incineration boiler, improve the overall heat load by 15-20% and the mechanical load by 20-30% after modification, improve the waste treatment capacity, improve the capacity of the waste heat boiler, generate more steam and increase the heating value, and improve the economic benefit of a waste incineration plant.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
fig. 1 is a schematic diagram of a waste incineration boiler modification system.
Detailed Description
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
The utility model provides a waste incineration boiler reconstruction system, as shown in fig. 1, wherein a preferred embodiment of the utility model is shown.
Specifically, the waste incineration boiler transformation system comprises a hopper 1, a bypass cracking device 2, a pusher 3 and a waste incineration furnace which are sequentially communicated, wherein the bottom of the waste incineration furnace is sequentially communicated with a drying grate 4, a combustion grate 5, a burning grate 6 and a slag falling pipe 7, the bottom of the combustion grate 5 is provided with a slag leakage hopper 8 and a first scraper conveyor 9, an exhaust passage on the upper part of the waste incineration furnace is sequentially and snakelike provided with a first channel membrane water wall 20, a second channel membrane water wall, a third channel membrane water wall and an economizer 17 arranged at the tail shaft, a first-stage evaporator 13, a high-temperature superheater 14, a medium-temperature superheater 15 and a low-temperature superheater 16 are sequentially arranged in the third channel membrane water wall, the lower parts of the second channel membrane water wall and the third channel membrane water wall are communicated with the burning grate 6 through a spiral conveyor 18 and an ash discharging pipe, and the bottom of the economizer 17 is sequentially communicated with the slag falling pipe 7 through a second scraper conveyor 19 and the ash falling pipe.
As shown in fig. 1, a side heat-insulating furnace wall 10 and a rear arch heat-insulating furnace wall 11 of the garbage incinerator are paved with silicon carbide pouring material layers in the incinerator to form a water-cooled wall structure, the second channel membrane type water-cooled wall is provided with a 5-screen evaporation tube panel 12, the water-cooled wall of the second channel adopts an upper header and a lower header, the middle part of the water-cooled wall is provided with a convection tube panel structure, and convection tubes of the convection tube panel structure are connected through a movable structure; the primary evaporator 13 is of a coiled pipe structure, and the high-temperature superheater 14 is of a double-winding coiled pipe structure convection pipe 14.
During transformation, the structures of the waste incinerator side heat insulation furnace wall 10 and the waste incinerator rear arch heat insulation furnace wall 11 are removed, a silicon carbide casting material is paved in the furnace to form a water-cooled wall structure, a pipe with 60mm diameter is adopted as a pipe screen, the pipe pitch is 90mm, and a SiC85% casting material structure is adopted as a refractory material.
The waste heat boiler is characterized in that a 5-screen evaporation tube panel is arranged on the second channel membrane water wall of the waste heat boiler, the evaporation tube panel 12 is a phi 42mm tube, the pitch of the tube is 53mm, the second channel membrane water wall is an upper header and a lower header, a convection tube panel structure is arranged in the middle of the second channel membrane water wall, and convection tubes of the convection tube panel structure are connected through a movable structure. Fins are not arranged between convection tubes of the tube panel, and the convection tubes are connected through a movable structure, so that the heat exchange effect of the convection tubes is ensured, and dust is not easy to accumulate.
Further, the primary evaporator 13 of the third channel device of the waste heat boiler is removed and replaced by a coiled pipe structure, and three pipes of the coiled pipe structure are arranged in a bypassing mode, so that a heat exchange surface is increased. And the third channel of the waste heat boiler is dismantled by a single-winding high-temperature superheater, and is replaced and installed into a double-winding coiled pipe structure convection pipe, so that the pressure loss of the pipeline is reduced.
After the boiler is reformed and expanded, the boiler realizes larger output capacity. Preferably, when the system matching parts are correspondingly replaced, the auxiliary soot blowing system and the burner system are matched and replaced, the primary air, the secondary air and the flue gas recirculation system are matched and replaced according to the flue gas quantity after the expansion is increased, the fuel oil supply system, the boiler water supply system, the chemical water system and the thermal control system are matched and replaced, and the steam turbine generator is matched and replaced with the generator rotor and the condenser.
To further illustrate the working process of the present utility model, in conjunction with fig. 1, the working process of the transformation system of the garbage incineration boiler is as follows:
the garbage is fed into a garbage hopper 1 by a grab bucket, and is pushed into a garbage incinerator by a pusher 3 through a bridging cracking device 2 and a chute for combustion. The garbage entering the garbage incinerator burns, sequentially passes through the drying grate 4, the combustion grate 5 and the ashes combustion grate 6, and then the generated slag enters the slag extractor through the slag falling pipe 7. The lower part of the fire grate of the garbage incinerator is provided with 2 rows of 12 slag leakage hoppers 8, and slag leakage of the fire grate is conveyed to a slag extractor through a first scraper conveyor 9. The slag extractor finally discharges the slag generated by combustion, slag leakage of the fire grate, boiler ash and the like to the slag pool.
The high-temperature flue gas generated by the combustion of the garbage in the garbage incinerator enters the waste heat boiler, sequentially passes through the first channel membrane water wall 20, the second channel membrane water wall and the evaporation tube panel 12 additionally arranged at the position, the third channel membrane water wall and the first-stage evaporator 13, the high-temperature superheater 14, the medium-temperature superheater 15 and the low-temperature superheater 16 arranged at the position, finally enters the economizer 17 arranged in the tail vertical shaft and finally is discharged to a subsequent flue gas treatment system. Ash at the lower parts of the second channel membrane water wall and the third channel membrane water wall is sent to a lower ash discharge pipe through a screw conveyor 18 and enters a burn-up grate 6 below the incinerator. Ash in the flue of the economizer 17 is sent to the slag-falling pipe 7 through the second scraper conveyor 19 and the ash-falling pipe by an ash bucket and is discharged by a slag extractor.
The system for modifying the waste incineration boiler can improve the treatment capacity of the original waste incineration boiler, improve the overall heat load by 15-20% and the mechanical load by 20-30% after modification, improve the waste treatment capacity, improve the capacity of the waste heat boiler, generate more steam and increase the heating value, and improve the economic benefit of a waste incineration plant.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.
Claims (4)
1. The utility model provides a waste incineration boiler transformation system, is including hopper (1), bridging cracking device (2), pusher (3), the waste incineration stove that communicate in proper order, waste incineration stove bottom communicates drying grate (4), burning grate (5), burn ashes grate (6), slag pipe (7) in proper order, burning grate (5) bottom is equipped with and leaks sediment fill (8), first scraper conveyor (9), its characterized in that: the upper exhaust passage of the garbage incinerator is sequentially provided with a first passage membrane water wall (20), a second passage membrane water wall, a third passage membrane water wall and an economizer (17) arranged at the tail shaft in a serpentine manner, a first-stage evaporator (13), a high-temperature superheater (14), a medium-temperature superheater (15) and a low-temperature superheater (16) are sequentially arranged in the third passage membrane water wall, the second passage membrane water wall is communicated with the combustion grate (6) through a spiral conveyor (18) and an ash discharge pipe at the lower part of the third passage membrane water wall, and the bottom of the economizer (17) is sequentially communicated with the slag discharge pipe (7) through a second scraper conveyor (19) and an ash discharge pipe;
a silicon carbide pouring material layer is paved in the side heat-insulating furnace wall (10) and the rear arch heat-insulating furnace wall (11) of the garbage incinerator to form a water-cooling wall structure, a 5-screen evaporation tube panel (12) is arranged on the second channel membrane type water-cooling wall, an upper header and a lower header are adopted by the water-cooling wall of the second channel, a convection tube panel structure is arranged in the middle of the water-cooling wall, and convection tubes of the convection tube panel structure are connected through a movable structure; the primary evaporator (13) is of a coiled pipe structure, and the high-temperature superheater (14) is of a double-winding coiled pipe structure convection pipe.
2. The waste incineration boiler modification system according to claim 1, characterized in that: the pipe screen of the water-cooled wall structure adopts a phi 60mm pipe, the pitch of the pipe is 90mm, and the refractory material adopts a SiC85% castable structure.
3. The waste incineration boiler modification system according to claim 1, characterized in that: the evaporating tube panel of the second channel membrane water-cooled wall adopts a tube with the diameter of 42mm, and the pitch of the tube is 53mm.
4. The waste incineration boiler modification system according to claim 1, characterized in that: the three tubes of the serpentine tube structure are arranged around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223043539.4U CN219014327U (en) | 2022-11-16 | 2022-11-16 | System is reformed transform to msw incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223043539.4U CN219014327U (en) | 2022-11-16 | 2022-11-16 | System is reformed transform to msw incineration boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219014327U true CN219014327U (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223043539.4U Active CN219014327U (en) | 2022-11-16 | 2022-11-16 | System is reformed transform to msw incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219014327U (en) |
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- 2022-11-16 CN CN202223043539.4U patent/CN219014327U/en active Active
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