CN221324499U - Incineration boiler with wall-covered pure-burned solid waste sludge - Google Patents
Incineration boiler with wall-covered pure-burned solid waste sludge Download PDFInfo
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- CN221324499U CN221324499U CN202323149122.0U CN202323149122U CN221324499U CN 221324499 U CN221324499 U CN 221324499U CN 202323149122 U CN202323149122 U CN 202323149122U CN 221324499 U CN221324499 U CN 221324499U
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- solid waste
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- 239000010802 sludge Substances 0.000 title claims abstract description 36
- 239000002910 solid waste Substances 0.000 title claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 206010037660 Pyrexia Diseases 0.000 claims 1
- 239000002956 ash Substances 0.000 abstract description 23
- 238000009413 insulation Methods 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000010881 fly ash Substances 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses an incineration boiler for pure burning solid waste sludge with a wall, which comprises a boiler body, wherein an outlet of the boiler body is connected with a high-temperature heat-insulation cyclone separator through a metal expansion joint, an outlet of the high-temperature heat-insulation cyclone separator is connected with a water-cooling wall, a convection tube bundle, a high-temperature superheater, a medium-temperature superheater and a low-temperature superheater are arranged in the water-cooling wall along the flow direction of flue gas, and an outlet of the water-cooling wall is connected with a shaft flue. The utility model is beneficial to the residence time of high-temperature flue gas in the hearth, prolongs the burning time of sludge, and reduces the carbon content of fly ash and the carbon content of large slag. Meanwhile, the tail heating surface of the incineration boiler is rearranged, so that ash contamination and bridging of the tail heating area are solved, and the problem that the temperature of main steam is affected is solved.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to an incineration boiler with a wall-covered pure-burning solid waste sludge.
Background
The treatment of solid waste sludge is roughly classified into composting, landfill, incineration and the like. The characteristics of solid waste sludge incineration treatment include greatly reduced volume and weight of sludge; killing pathogens; the sludge treatment speed is high, and long-term storage is not needed; energy can be recovered. But on the other hand, the higher cost and the problem of flue gas treatment have become the main factors restricting the sludge incineration process.
In general, there are basically four methods for incinerating sludge: first, the existing garbage incinerator is used to mix 30% of sludge into garbage for incineration. Secondly, the sludge is incinerated by utilizing the existing industrial furnace, and the dried sludge is incinerated by mainly utilizing an asphalt or cement incinerator, so that the sludge ash is fused into a cement product. Third, the sludge is burned in a thermal power plant. Fourth, the sludge is burned alone, namely the solid waste sludge is burned purely, which means that the solid waste sludge is burned directly by a boiler without other treatment modes being combined or improved.
In the process of pure burning of solid waste sludge, the tail part of the existing boiler is polluted by ash in the heated area, so that the problem that the temperature of main steam is affected is solved.
Disclosure of utility model
The utility model aims to provide an incineration boiler with a wall-covered pure-burning solid waste sludge, which solves the problems that the tail part of the existing boiler is polluted by ash in a heated area and the temperature of main steam is affected in the prior art.
In order to solve the technical problems, the utility model provides an incineration boiler for pure burning solid waste sludge with a wall, which comprises a boiler body, wherein a high-temperature heat-insulation cyclone separator is connected to an outlet of the boiler body through a metal expansion joint, a water-cooling wall is connected to an outlet of the high-temperature heat-insulation cyclone separator, a convection tube bundle, a high-temperature superheater, a medium-temperature superheater and a low-temperature superheater are arranged in the water-cooling wall along the flow direction of flue gas, and a shaft flue is connected to an outlet of the water-cooling wall.
Further, the water-cooling package wall is divided into a first cavity and a second cavity from left to right, the top of the first cavity is communicated with the outlet of the high-temperature heat-insulation cyclone separator, the bottom of the first cavity is communicated with the bottom of the second cavity, the top of the second cavity is communicated with the vertical shaft flue, and the convection tube bundle, the high-temperature superheater, the medium-temperature superheater and the low-temperature superheater are arranged in the second cavity.
Further, a first ash bucket is arranged at the bottom of the water-cooling bag wall.
Further, a high-temperature economizer, a high-temperature air preheater, a medium-temperature economizer, a low-temperature economizer, a medium-temperature air preheater and a low-temperature air preheater are sequentially arranged in the vertical shaft flue from top to bottom.
Further, the vertical shaft flue is connected with the water-cooling package wall through a steering flue, the steering flue is in a horn shape, the opening direction faces the vertical shaft flue, and a second ash bucket is arranged below the steering flue.
Further, the outlet of the low-temperature air preheater is provided with a third ash bucket.
Further, the middle part of the furnace body is a furnace chamber, and an over-fire air channel, a middle secondary air channel and a lower secondary air channel are sequentially arranged on the furnace chamber from top to bottom.
The beneficial effects of the utility model are as follows: the utility model is beneficial to the residence time of high-temperature flue gas in the hearth, prolongs the burning time of sludge, and reduces the carbon content of fly ash and the carbon content of large slag. Meanwhile, the tail heating surface of the incineration boiler is rearranged, so that ash contamination and bridging of the tail heating area are solved, and the problem that the temperature of main steam is affected is solved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Wherein: 1. a furnace body; 2. a high temperature adiabatic cyclone; 3. water-cooling wall wrapping; 4. a convection bank; 5. a high temperature superheater; 6. a medium temperature superheater; 7. a low temperature superheater; 8. a shaft flue; 9. a first ash bucket; 10. a high temperature economizer; 11. a high-temperature air preheater; 12. a medium-temperature economizer; 13. a low-temperature economizer; 14. a medium temperature air preheater; 15. a low-temperature air preheater; 16. a turning flue; 17. a second ash bucket; 18. a third ash bucket; 19. an air flue is burnt out; 20. a secondary air duct; 21. a lower secondary air duct;
101. A furnace; 301. a first chamber; 302. a second chamber.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only one embodiment of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The present application will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present application more apparent.
In the following description, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. In addition, repeated use of the phrase "according to an embodiment of the application" does not necessarily refer to the same embodiment, although it may.
The utility model discloses an incineration boiler with a wall-covered pure-burned solid waste sludge, which is shown in fig. 1, and comprises a boiler body 1, wherein an outlet of the boiler body 1 is connected with a high-temperature heat-insulation cyclone separator 2 through a metal expansion joint, namely the separator is heat-insulated and does not absorb heat, so that the temperature of high-temperature flue gas in the high-temperature heat-insulation cyclone separator 2 is ensured, the residence time of the high-temperature flue gas in a hearth 101 is prolonged, and the burning time of the boiler is prolonged. The outlet of the high-temperature heat-insulating cyclone separator 2 is connected with a water-cooling package wall 3, the outlet of the high-temperature heat-insulating cyclone separator 2 is also connected with the water-cooling package wall 3 through a metal expansion joint, the metal expansion joint can adopt a labyrinth stainless steel metal expansion joint, and the labyrinth stainless steel expansion joint can effectively absorb axial and radial thermal displacement of a steering chamber under a high-temperature state when being heated. The periphery of the water-cooling wall 3 is welded by adopting a pipe and flat steel. The water-cooling wall 3 is provided with a convection bank 4, a high-temperature superheater 5, a medium-temperature superheater 6 and a low-temperature superheater 7 along the flow direction of the flue gas, and the outlet of the water-cooling wall 3 is connected with a shaft flue 8.
The high-temperature heat-insulating cyclone separator 2 can prolong the residence time of high-temperature flue gas in the hearth 101, so that the burning time of sludge is prolonged, and the carbon content of fly ash and the carbon content of large slag are reduced. The high-temperature flue gas passes through the high-temperature heat-insulating cyclone separator 2 and then enters the water-cooling wall 3, so that the temperature of the flue gas can be reduced below the dew point, and water vapor in the flue gas is condensed into liquid water. Meanwhile, the wall surface of the water-cooling wall 3 has a larger surface area, and dust particles can be effectively trapped. These dust particles are collected with the condensed water and discharged out of the system. The dust content is reduced, and the flue gas with reduced temperature is heated again to the rated temperature through the flow tube bundle, the high-temperature superheater 5, the medium-temperature superheater 6 and the low-temperature superheater 7 and is conveyed to the shaft flue 8.
In one embodiment, the water-cooling package wall 3 is divided into a first chamber 301 and a second chamber 302 from left to right, the top of the first chamber 301 is communicated with the outlet of the high-temperature heat-insulation cyclone separator 2, the bottom of the first chamber 301 is communicated with the bottom of the second chamber 302, the top of the second chamber 302 is communicated with the vertical shaft flue 8, and a convection tube bundle 4, a high-temperature superheater 5, a medium-temperature superheater 6 and a low-temperature superheater 7 are arranged in the second chamber 302. That is, the internal cavity of the water-cooling wall 3 is in a U shape, high-temperature flue gas flows through the cavity from top to bottom in the first cavity 301, then the flue gas enters the second cavity 302 through the bottom in the water-cooling wall 3, and then the flue gas flows from bottom to top and sequentially passes through the convection bank 4, the high-temperature superheater 5, the medium-temperature superheater 6 and the low-temperature superheater 7.
In one embodiment, a first ash bucket 9 is arranged at the bottom of the water-cooled ladle wall 3 for collecting and treating ash in the water-cooled ladle wall 3.
In one embodiment, the high-temperature economizer 10, the high-temperature air preheater 11, the medium-temperature economizer 12, the low-temperature economizer 13, the medium-temperature air preheater 14 and the low-temperature air preheater 15 are arranged in the shaft flue 8 in sequence from top to bottom, so that heat of high-temperature flue gas can be recycled.
In one embodiment, the shaft flue 8 and the water-cooling wall 3 are connected through a turning flue 16, the turning flue 16 is in a horn shape, the opening direction of the turning flue 16 faces the shaft flue 8, and a second ash bucket 17 is arranged below the turning flue 16. Because the turning flue 16 is easy to accumulate and bridge, the second ash hopper 17 is designed under the turning flue 16, so that accumulated ash can be released under the normal operation condition, and the accumulated ash at the tail part is reduced.
In one embodiment, the outlet of the low temperature air preheater 15 is provided with a third hopper 18.
In one embodiment, the middle part of the furnace body 1 is a furnace chamber 101, and the furnace chamber 101 is provided with an overfire air channel 19, a middle secondary air channel 20 and a lower secondary air channel 21 in sequence from top to bottom. In the embodiment, the secondary air can be arranged in three layers of front and rear walls, lower secondary air nozzles are arranged at reasonable positions away from the water-cooling air distribution plate, four nozzles are arranged on the front and rear walls of the lower secondary air layer respectively, and a branch pipeline of each nozzle is provided with a manual air damper. The middle secondary air nozzles are arranged at reasonable positions away from the water-cooling air distribution plate, the front wall and the rear wall of the middle secondary air are respectively provided with four nozzles, the branch pipe of each nozzle is provided with a manual air damper, the outlet of the hearth 101 is provided with over-fire air, and the manual air dampers on the branch pipes of the lower secondary air channel 21, the middle secondary air channel 20 and the upper-layer over-fire air channel 19 are closed and opened on site according to actual combustion working conditions, so that the supply air quantity of the secondary air is adjusted, and the solid waste sludge is fully combusted in the hearth 101.
The general conception of the utility model is that:
In an embodiment, to further control and ensure the residence time of the high temperature flue gas inside the furnace 101 and the effect of incineration of the solid waste sludge particles. The hearth 101 can adopt a high hearth 101, the flow rate of the flue gas can be reduced due to the large section, and the hearth 101 is higher than a conventional furnace, so that the residence time of the high-temperature flue gas in the hearth 101 is facilitated. The lower part and the top of the hearth 101 adopt a heat insulation mode of welding V-shaped nails and laying wear-resistant refractory casting materials, the radiation area in the hearth 101 is reduced, the flue gas temperature is further improved, and the residence time of high-temperature flue gas above the hearth 101 is ensured. Thereby improving the burnout degree of the solid waste sludge at a high temperature.
The high-temperature heat-insulating cyclone separator 2 connected through the metal expansion joint is designed at the outlet of the hearth 101, namely the separator is heat-insulating and does not absorb heat, so that the temperature of high-temperature flue gas in the high-temperature heat-insulating cyclone separator 2 is ensured, the residence time of the high-temperature flue gas in the hearth 101 is prolonged, and the combustion time of a boiler is prolonged. The outlet of the high-temperature heat-insulating cyclone separator 2 is connected with a water-cooling package wall 3, and the outlet of the high-temperature heat-insulating cyclone separator 2 is also connected with the water-cooling package wall 3 through a metal expansion joint.
The periphery of the water-cooling wall 3 is welded by adopting a pipe and flat steel. The water cooling package wall 3 is divided into a first cavity 301 and a second cavity 302 from left to right, the top of the first cavity 301 is communicated with the outlet of the high-temperature heat-insulation cyclone separator 2, the bottom of the first cavity 301 is communicated with the bottom of the second cavity 302, the top of the second cavity 302 is communicated with the vertical shaft flue 8, a convection bank 4, a high-temperature superheater 5, a medium-temperature superheater 6 and a low-temperature superheater 7 are arranged in the second cavity 302, and a first ash bucket 9 at the bottom of the water cooling package wall 3 collects and processes ash in the water cooling package wall 3.
The flue gas then passes through a trumpet-shaped diverting flue 16, and the accumulated ash in the diverting flue 16 is collected and treated by a second ash bucket 17. The high-temperature flue gas enters the shaft flue 8 and sequentially passes through the high-temperature economizer 10, the high-temperature air preheater 11, the medium-temperature economizer 12, the low-temperature economizer 13, the medium-temperature air preheater 14 and the low-temperature air preheater 15, so that the heat of the high-temperature flue gas can be recycled. Finally, the ash is collected and processed by a third hopper 18.
The utility model is beneficial to the residence time of high-temperature flue gas in the hearth 101, prolongs the burning time of sludge, and reduces the carbon content of fly ash and the carbon content of large slag. Meanwhile, the tail heating surface of the incineration boiler is rearranged, so that ash contamination and bridging of the tail heating area are solved, and the problem that the temperature of main steam is affected is solved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a take incineration boiler of solid waste sludge of pure fever of package wall, includes furnace body, its characterized in that: the furnace body outlet is connected with a high-temperature heat-insulating cyclone separator through a metal expansion joint, the high-temperature heat-insulating cyclone separator outlet is connected with a water-cooling package wall, a convection tube bundle, a high-temperature superheater, a medium-temperature superheater and a low-temperature superheater are arranged in the water-cooling package wall along the flow direction of flue gas, and the water-cooling package wall outlet is connected with a shaft flue.
2. The incinerator with wall-covering pure-burning solid waste sludge according to claim 1, characterized in that: the water cooling package wall from left to right divide into first cavity and second cavity, first cavity top with the adiabatic cyclone export intercommunication of high temperature, first cavity bottom with second cavity bottom intercommunication, second cavity top with shaft flue intercommunication, be equipped with in the second cavity convection bank high temperature superheater medium temperature superheater with low temperature superheater.
3. The incinerator with wall-covering pure-burning solid waste sludge according to claim 2, characterized in that: the bottom of the water-cooling wall is provided with a first ash bucket.
4. The incinerator with wall-covering pure-burning solid waste sludge according to claim 1, characterized in that: the high-temperature economizer, the high-temperature air preheater, the medium-temperature economizer, the low-temperature economizer, the medium-temperature air preheater and the low-temperature air preheater are sequentially arranged in the vertical shaft flue from top to bottom.
5. The incinerator with wall-covering pure-burning solid waste sludge according to claim 1, characterized in that: the vertical shaft flue is connected with the water-cooling package wall through a steering flue, the steering flue is horn-shaped, the opening direction faces the vertical shaft flue, and a second ash bucket is arranged below the steering flue.
6. The incinerator with wall-covering pure-burning solid waste sludge according to claim 4, wherein: and a third ash bucket is arranged at the outlet of the low-temperature air preheater.
7. The incinerator with wall-covering pure-burning solid waste sludge according to claim 1, characterized in that: the middle part of the furnace body is a furnace chamber, and the furnace chamber is provided with an over-fire air channel, a middle secondary air channel and a lower secondary air channel from top to bottom in sequence.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221324499U true CN221324499U (en) | 2024-07-12 |
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| GR01 | Patent grant |