CN210241580U - High-parameter grate waste incineration boiler - Google Patents
High-parameter grate waste incineration boiler Download PDFInfo
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- CN210241580U CN210241580U CN201920828864.0U CN201920828864U CN210241580U CN 210241580 U CN210241580 U CN 210241580U CN 201920828864 U CN201920828864 U CN 201920828864U CN 210241580 U CN210241580 U CN 210241580U
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Abstract
The utility model discloses a high parameter grate msw incineration boiler, this boiler lay SiC refractory castable to the flame through the entrance at furnace chamber I, all the other of furnace chamber I to flame and furnace chamber II to the flame surfacing nickel base alloy material of high temperature resistant corrosion technique realize the high parameter of boiler. The grate waste incineration boiler has the advantages that the main steam parameter is increased from conventional 4.0MPa to 5.3-13.5 MPa, the power generation efficiency is increased by more than 3%, the economic benefit of a waste incineration power plant can be remarkably improved, and the problems of aggravated corrosion of a heating surface of the waste heat boiler, shortened service life and reduced reliability caused by high parameters are solved.
Description
Technical Field
The utility model relates to an utilize grate msw incineration boiler of domestic waste incineration electricity generation, especially relate to large-scale high parameter grate msw incineration boiler.
Background
The increasing urban domestic garbage becomes a social problem which troubles urban development, pollutes urban environment and influences the life of residents, and the traditional treatment processes of landfill, compost and the like cannot meet the requirement of daily garbage treatment. The garbage is incinerated at high temperature to decompose harmful substances, so that sterile treatment is realized, and electric energy is generated by utilizing heat, so that the garbage incineration power generation gradually becomes a main mode of garbage reduction, recycling and harmlessness. The mechanical grate type waste incineration power generation technology has the remarkable characteristics of large waste treatment capacity, high operation reliability, short treatment period, remarkable reduction, harmlessness, thoroughness and the like, and becomes a preferred mode for treating urban domestic waste by users. At present, the competition of a waste incineration power generation project is fierce, the environmental protection requirement is higher and higher, the initial investment and the later operation cost of a waste incineration boiler power plant are continuously increased, and the power plant tends to obtain good economic benefit and improve the main steam parameters of a waste incineration power generation waste heat boiler so as to improve the overall power generation efficiency of the power plant. At present, the 4.0MPa conventional parameter grate waste incineration boiler structure can not meet the design requirement of a high-parameter boiler with the pressure of 5.3 MPa-13.5 MPa.
Disclosure of Invention
The utility model aims to solve the technical problem that a high-parameter grate waste incineration boiler capable of meeting the main steam pressure of 5.3 MPa-13.5 MPa is provided.
In order to solve the technical problem, the utility model discloses a high parameter grate waste incineration boiler, including burning the grate, it burns furnace to be provided with on the burning grate, the export of burning furnace connects the entry of furnace room I, the export of furnace room I connects the entry of furnace room II, the export of furnace room II connects the entry of furnace room III, the export of furnace room III connects the entry of flue, furnace room I comprises furnace room I front wall, two side walls of furnace room I, front partition wall; the furnace chamber II consists of a front partition wall, two side walls of the furnace chamber II and a rear partition wall; the furnace chamber III consists of a rear partition wall, two side walls of the furnace chamber III and a rear wall; the front wall of the furnace chamber I, the two side walls of the furnace chamber I, the front partition wall, the two side walls of the furnace chamber II, the rear partition wall, the two side walls of the furnace chamber III and the rear wall are all composed of a lower collecting box, a membrane type wall and an upper collecting box; the furnace chamber I and the furnace chamber II are arranged in an inverted U shape, the furnace chamber II and the furnace chamber III are arranged in a U shape, and the furnace chamber I and the furnace chamber III further comprise a superheater and an economizer; the superheater comprises a ceiling superheater, a high-temperature superheater, a medium-temperature superheater, a low-temperature superheater, a primary water spray desuperheater, a secondary water spray desuperheater and a superheater outlet steam collection box, wherein the ceiling superheater is arranged on the top wall of the flue, and the high-temperature superheater, the medium-temperature superheater, the low-temperature superheater and the economizer are sequentially arranged between the inlet of the flue and the outlet of the flue; side wrapping walls are arranged on two side walls of the flue and consist of a lower collecting box, a membrane type wall and an upper collecting box; a plurality of groups of water-cooling tube panels are arranged in the furnace chamber III, the water-cooling tube panels are arranged in parallel with two side walls of the furnace chamber III, an outlet header of each water-cooling tube panel is connected with a drum through an eduction tube, and the drum is connected with an inlet header of each water-cooling tube panel through a down tube and a dispersion tube; the boiler barrel is connected with the coal economizer through a connecting pipe; the boiler barrel is respectively connected to lower headers of a front wall of a furnace chamber I, two side walls of the furnace chamber I, a front partition wall, two side walls of a furnace chamber II, a rear partition wall, two side walls of a furnace chamber III and a rear wall through a down pipe and a dispersion pipe, and then respectively connected to a steam space of the boiler barrel through respective upper headers through an eduction pipe; the boiler barrel is introduced into an inlet header of the ceiling superheater through a connecting pipe, is led out from an outlet header of the ceiling superheater, is led into an inlet header of the low-temperature superheater through the connecting pipe, is led out from an outlet header of the low-temperature superheater, is led into an inlet header of the medium-temperature superheater after passing through a first-stage water spray desuperheater through the connecting pipe, is led out from an outlet header of the medium-temperature superheater, is led into a high-temperature superheater inlet header after passing through a second-stage water spray desuperheater through the connecting pipe, is led out to a superheater outlet steam collecting header through the high-temperature superheater outlet header, SiC refractory castable is laid on the fire facing surface in an inlet section of the furnace chamber I, and nickel-based alloy materials resistant to high temperature corrosion are stacked and welded on the fire facing surfaces of the.
According to the further optimization of the technical scheme, the nickel-based alloy material with high temperature corrosion resistance is subjected to build-up welding on the fire surfaces of the furnace chamber III and the water-cooling tube panel.
According to the further optimization of the technical scheme, the laying range of the SiC refractory castable is the fire facing surface of the furnace chamber I within 2 seconds of the flue gas stroke from the outlet of the incineration furnace chamber.
The technical proposal is further optimized, the thickness of the nickel-based alloy welding layer is 1.5-3mm, the hardness of the surfacing layer is 240-260HV, and the dilution rate of Fe is less than or equal to 4.5 percent.
According to the further optimization of the technical scheme, the high-temperature superheater is a plurality of groups of coiled pipes which are arranged in a downstream mode, and nickel-based alloy materials are welded on the peripheries of the pipes in the front two rows and the pipes in the rear two rows.
According to the further optimization of the technical scheme, the thickness of the nickel-based alloy welding layer formed by surfacing on the periphery of the tube is 1.5-2.5mm, the hardness of the surfacing layer is 240-260HV, and the dilution rate of Fe is less than or equal to 4.5%.
According to the further optimization of the technical scheme, an evaporator is arranged in the flue and is arranged on the front side of the high-temperature superheater, the evaporator consists of an evaporator inlet header, an evaporator outlet header and a plurality of evaporator tube panels, the boiler barrel is connected with the evaporator inlet header through a down pipe and a dispersion pipe, and the boiler barrel is connected with the evaporator outlet header through an outlet pipe; the boiler barrel is connected with a lower header of the side wrapping wall through a descending pipe and a dispersion pipe, and the boiler barrel is connected with an upper header of the side wrapping wall through an eduction pipe.
According to the further optimization of the technical scheme, the outlet header of the ceiling superheater is introduced into the side wrapping wall through the connecting pipe and then enters the inlet header of the low-temperature superheater through the connecting pipe.
According to the further optimization of the technical scheme, the evaporator is suspended on a top plate of a boiler steel structure through a suspension rod.
According to the technical scheme, the ceiling superheater is suspended on a top plate of a boiler steel structure through a suspension rod, and sealing structures are arranged at the joints of the ceiling superheater, the side wrapping wall, the evaporator and the superheater.
The utility model discloses a grate msw incineration boiler makes the main steam parameter improve 5.3MPa ~ 13.5 MPa's high parameter by conventional 4.0MPa, and generating efficiency promotes more than 3%, can show and promote msw incineration power plant economic benefits, has still solved simultaneously because the exhaust-heat boiler that the high parameter brought receives the problem that the hot side corrodes aggravation, life-span shortens, the reliability descends.
Drawings
FIG. 1 is a schematic view of the overall structure of a high parameter grate waste incineration boiler (P is more than or equal to 5.3MPa and less than 9.8MPa) according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a schematic view of the membrane wall and upper and lower headers;
FIG. 4 is a schematic view of the overall structure of a refuse incineration boiler with a high parameter grate (P is more than or equal to 9.8MPa and less than or equal to 13.5MPa) according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 4;
FIG. 6 is a schematic view of the steam-water flow of the high parameter grate waste incineration boiler (P is more than or equal to 5.3MPa and less than 9.8MPa) according to an embodiment of the present invention;
FIG. 7 is a schematic view of the steam-water flow of a refuse incineration boiler with a high parameter grate (P is more than or equal to 9.8MPa and less than or equal to 13.5MPa) according to another embodiment of the present invention;
fig. 8 is a partial enlarged view at C in fig. 2 and 5;
FIG. 9 is an enlarged view of a portion of FIG. 2 at D;
FIG. 10 is an enlarged view of a portion of FIG. 2 at E;
FIG. 11 is an enlarged view of a portion of FIG. 5 at F;
fig. 12 is a partial enlarged view at G in fig. 5.
Detailed Description
The detailed layout of the high-parameter grate waste incineration boiler is described in detail below with reference to the accompanying drawings 1 to 12. The scheme of the utility model is more improved on the basis of conventional 4.0MPa, and the scheme is as follows.
A high-parameter grate waste incineration boiler comprises an incineration grate 1, an incineration hearth 2, a furnace chamber I3, a furnace chamber II 4, a furnace chamber III 5, a water-cooling tube panel 6, a boiler barrel 7, an extraction tube 8, a descending tube 9, a dispersion tube 10, a side wrapping wall 11, an evaporator 12, a connecting tube 13, a superheater 14, an economizer 15, a steel structure 16, a sealing structure 17 and a flue 38; an economizer 15 for supplying water is connected with the drum 7 through a connecting pipe 13; the superheater 14 comprises a ceiling superheater 18, a high-temperature superheater 19, a medium-temperature superheater 20, a low-temperature superheater 21, a primary water spray desuperheater 22, a secondary water spray desuperheater 23 and a superheater outlet steam collection box 24; the furnace chamber I3 consists of a front wall 25 of the furnace chamber I, two side walls 26 of the furnace chamber I and a front partition wall 27; the furnace chamber II 4 consists of a front partition wall 27, two side walls 28 of the furnace chamber II and a rear partition wall 29; the furnace chamber III 5 consists of a rear partition wall 29, two side walls 30 of the furnace chamber III and a rear wall 31; the furnace chamber I3 and the furnace chamber II 4 are compactly arranged and share a front partition wall 27; the furnace chamber II 4 and the furnace chamber III 5 are compactly arranged and share a rear partition wall 29; flue gas generated by the incineration of garbage on the incineration grate 1 fully burns in the incineration hearth 2, flows through the furnace chamber I3, flows through the furnace chamber II 4, flows through the furnace chamber III 5, enters the side wrapping wall 11 from the outlet of the furnace chamber III 5, and sequentially flows through the evaporator 12, the superheater 14 and the economizer 15 for heat exchange until reaching the flue gas outlet of the boiler; the furnace chamber I3 and the furnace chamber II 4 are arranged in an inverted U shape, and the furnace chamber II 4 and the furnace chamber III 5 are arranged in a U shape.
The structure of the front wall 25 of the furnace chamber I, the two side walls 26 of the furnace chamber I, the front partition wall 27, the two side walls 28 of the furnace chamber II, the rear partition wall 29, the two side walls 30 of the furnace chamber III and the rear wall 31 are similar, the front wall and the rear wall are composed of a lower header 35, a membrane wall 36 and an upper header 37, and the medium in the membrane wall 36 is a steam-water mixture.
The side wrapping wall 11 consists of a lower header 35, a membrane wall 36 and an upper header 37, when the main steam pressure is more than or equal to 5.3MPa and less than or equal to P and less than 9.8MPa, the medium in the side wrapping wall 11 is a steam-water mixture, and when the main steam pressure is more than or equal to 9.8MPa and less than or equal to P and less than or equal to 13.5MPa, the medium in the side wrapping wall 11 is superheated steam;
when the main steam pressure of the high-parameter grate waste incineration boiler is not less than 5.3MPa and not more than P and less than 9.8MPa, laying SiC refractory castable on the fire surface from the furnace chamber I3 at the outlet of the incineration hearth 2 within 2 seconds of the flue gas stroke, and overlaying and welding high-temperature-corrosion-resistant nickel-based alloy materials on the fire surface of the furnace chamber I3 and the fire surface of the furnace chamber II 4 to avoid the high-temperature corrosion of the membrane water-cooled wall, wherein the thickness of a nickel-based alloy welding layer is 1.5-3mm, the hardness of the overlaying layer is 240 plus 260HV, and the dilution rate of Fe is not more than 4.5%; when the main steam pressure of the high-parameter grate waste incineration boiler is not less than 9.8MPa and not more than 13.5MPa, laying SiC refractory castable on a fire surface from a furnace chamber I3 at the outlet of an incineration hearth 2 within 2 seconds of a flue gas stroke, and overlaying a nickel-based alloy material with high temperature corrosion resistance on the fire surface of the furnace chamber I3, the fire surface of a furnace chamber II 4, the furnace chamber III 5 and a water-cooling tube panel 6 to the fire surface to avoid the high temperature corrosion of a membrane type water-cooling wall, wherein the thickness of the nickel-based alloy welding layer is 1.5-3mm, the hardness of the overlaying layer is 240-260HV, and the dilution rate of Fe is not more than 4.5%;
the water-cooling tube panel 6 is arranged in the furnace chamber III 5 and is parallel to the side walls 30 of the furnace chamber III, the water-cooling tube panel 6 can be set to be a group A, A is not less than 2 and not more than 8, the boiler barrel 7 is connected with an inlet header of the water-cooling tube panel 6 through a descending tube 9 and a dispersion tube 10, and is connected with an outlet header of the water-cooling tube panel 6 through an eduction tube 8 to form an independent water circulation loop.
When the main steam parameter pressure of the high-parameter fire grate waste incineration boiler is 5.3MPa or more and P is less than 9.8MPa, the boiler barrel 7 is supplied with water by a plurality of descending pipes 9, and then the water is respectively introduced into a front wall 25 of a furnace chamber I, two side walls 26 of the furnace chamber I, a front partition wall 27, two side walls 28 of the furnace chamber II, a rear partition wall 29, two side walls 30 of the furnace chamber III, a rear wall 31 and a lower header 35 of a side wrapping wall 11 through a distribution pipe 10, and is respectively introduced into a steam space of the boiler barrel 7 through respective upper headers 37 through outlet pipes 8, so that a plurality of independent water circulation loops are formed; saturated steam of the boiler barrel 7 is introduced into an inlet header of a ceiling superheater 18 through a connecting pipe 13, passes through the ceiling superheater 18 consisting of a membrane wall, is led out from an outlet header of the ceiling superheater 18, is introduced into an inlet header of a low-temperature superheater 21 through the connecting pipe 13, passes through a tube bundle of the low-temperature superheater 21 consisting of coiled tubes, and is led out from an outlet header of the low-temperature superheater 21; the water passes through a first-stage water spray desuperheater 22 through a connecting pipe 13 and then is introduced into an inlet header of the medium temperature superheater 20, passes through a pipe bundle of the medium temperature superheater 20 consisting of coiled pipes and is led out from an outlet header of the medium temperature superheater 20; the steam is led into an inlet header of a high-temperature superheater 19 through a connecting pipe 13 after passing through a secondary water spray desuperheater 23, passes through a high-temperature superheater 19 tube bundle consisting of coiled pipes, and is led out to a superheater outlet steam collection header 24 through the connecting pipe 13 by an outlet header of the high-temperature superheater 19.
When the main steam parameter pressure of the high-parameter fire grate waste incineration boiler is 9.8MPa or more and P or less than 13.5MPa, the boiler barrel 7 is supplied with water by a plurality of descending pipes 9, and then is respectively introduced into a front wall 25 of a furnace chamber I, two side walls 26 of the furnace chamber I, a front partition wall 27, two side walls 28 of the furnace chamber II, a rear partition wall 29, two side walls 30 of the furnace chamber III and a lower header 35 of a rear wall 31 through a distribution pipe 10, and is respectively introduced into a steam space of the boiler barrel 7 through respective upper headers 37 through outlet pipes 8, so that a plurality of independent water circulation loops are formed; saturated steam of the boiler barrel 7 is introduced into an inlet header of a ceiling superheater 18 through a connecting pipe 13, passes through the ceiling superheater 18 consisting of membrane walls, is led out from an outlet header of the ceiling superheater 18, is introduced into a side wrapping wall 11 through the connecting pipe 13, passes through a downward and backward upward steam flow path in the side wrapping wall 11, and then enters an inlet header of a low-temperature superheater 21, specifically, flows downward in the side wrapping wall 11 on one side and then flows upward in the side wrapping wall 11 on the other side; the tube bundle passes through a low-temperature superheater 21 consisting of coiled tubes and is led out from an outlet header of the low-temperature superheater 21; the water passes through a first-stage water spray desuperheater 22 through a connecting pipe 13 and then is introduced into an inlet header of the medium temperature superheater 20, passes through a pipe bundle of the medium temperature superheater 20 consisting of coiled pipes and is led out from an outlet header of the medium temperature superheater 20; the steam is led into an inlet header of a high-temperature superheater 19 through a connecting pipe 13 after passing through a secondary water spray desuperheater 23, passes through a high-temperature superheater 19 tube bundle consisting of coiled pipes, and is led out to a superheater outlet steam collection header 24 through the connecting pipe 13 by an outlet header of the high-temperature superheater 19.
When the main steam parameter pressure of the high-parameter grate waste incineration boiler is 5.3MPa or more and P or less than 9.8MPa, the boiler is provided with the evaporator 12 (when the main steam parameter pressure is 9.8MPa or more and P or less than 13.5MPa, the boiler does not have the part). The evaporator 12 consists of an evaporator inlet header 32, an evaporator outlet header 33 and a plurality of evaporator tube panels 34 which are uniformly distributed in the side wrapping wall 11, and the evaporator 12 is suspended on the top plate of the boiler steel structure 16 through a suspension rod and can freely expand integrally; the drum 7 is connected with an evaporator inlet header 33 through a downcomer 9 and a dispersion pipe 10, and is connected with an evaporator outlet header 34 through an eduction pipe 8 to form an independent circulation loop;
the high-temperature superheater 19 is arranged in a downstream mode and comprises N groups of coiled pipes, wherein N is more than or equal to 16 and less than or equal to 30, the pipes are made of high-temperature corrosion resistant alloy steel materials, nickel-based alloy is welded on the peripheries of the pipes in the front two rows and the pipes in the rear two rows, the thickness of the nickel-based alloy welding layer is 1.5-2.5mm, the hardness of the welding layer is 240-260HV, and the dilution rate of Fe is less than or equal to 4.5%; (ii) a The medium temperature superheater 20 is arranged in a concurrent flow mode and comprises M groups of coiled pipes, wherein M is more than or equal to 16 and less than or equal to 30, and the pipes are made of high-temperature corrosion resistant alloy steel materials; the concurrent flow arrangement mode of the high-temperature superheater 19 and the medium-temperature superheater 20 can effectively control the wall temperature of the superheater tubes to avoid the corrosion temperature interval of materials, thereby preventing the high-temperature corrosion of the superheater 14 and ensuring the long-term reliable operation of the superheater 14.
The ceiling superheater 18 is arranged on the top of the side wrapping wall 11, and the ceiling superheater 18 is suspended on the top plate of the boiler steel structure 16 through a suspension rod; the arrangement of the ceiling superheater 18 facilitates the hoisting and assembly of a single evaporation tube panel and a superheater serpentine tube sheet; sealing structures 17 are elaborately designed at the joint of the ceiling superheater 18 and the side wrapping wall 11 and at the joint of the evaporation tube panel and the superheater serpentine tube sheet which vertically penetrates through the ceiling superheater 18, so that the sealing performance of the sealing structures is ensured; the ceiling superheater 18 not only solves the problem of complex water circulation of the water-cooled ceiling, but also solves the problem of safe operation of boiler equipment.
The maximum treatment capacity of a single high-parameter grate waste incineration boiler can reach 1000 t/d.
Claims (10)
1. A high-parameter grate waste incineration boiler comprises an incineration grate, wherein an incineration hearth is arranged on the incineration grate, an outlet of the incineration hearth is connected with an inlet of a furnace chamber I, an outlet of the furnace chamber I is connected with an inlet of a furnace chamber II, an outlet of the furnace chamber II is connected with an inlet of a furnace chamber III, an outlet of the furnace chamber III is connected with an inlet of a flue, and the furnace chamber I consists of a front wall of the furnace chamber I, two side walls of the furnace chamber I and a front partition wall; the furnace chamber II consists of a front partition wall, two side walls of the furnace chamber II and a rear partition wall; the furnace chamber III consists of a rear partition wall, two side walls of the furnace chamber III and a rear wall; the front wall of the furnace chamber I, the two side walls of the furnace chamber I, the front partition wall, the two side walls of the furnace chamber II, the rear partition wall, the two side walls of the furnace chamber III and the rear wall are all composed of a lower collecting box, a membrane type wall and an upper collecting box; the furnace chamber I and the furnace chamber II are arranged in an inverted U shape, the furnace chamber II and the furnace chamber III are arranged in a U shape, and the furnace chamber I and the furnace chamber III further comprise a superheater and an economizer; the superheater comprises a ceiling superheater, a high-temperature superheater, a medium-temperature superheater, a low-temperature superheater, a primary water spray desuperheater, a secondary water spray desuperheater and a superheater outlet steam collection box, wherein the ceiling superheater is arranged on the top wall of the flue, and the high-temperature superheater, the medium-temperature superheater, the low-temperature superheater and the economizer are sequentially arranged between the inlet of the flue and the outlet of the flue; side wrapping walls are arranged on two side walls of the flue and consist of a lower collecting box, a membrane type wall and an upper collecting box; a plurality of groups of water-cooling tube panels are arranged in the furnace chamber III, the water-cooling tube panels are arranged in parallel with two side walls of the furnace chamber III, an outlet header of each water-cooling tube panel is connected with a drum through an eduction tube, and the drum is connected with an inlet header of each water-cooling tube panel through a down tube and a dispersion tube; the boiler barrel is connected with the coal economizer through a connecting pipe; the boiler barrel is respectively connected to lower headers of a front wall of a furnace chamber I, two side walls of the furnace chamber I, a front partition wall, two side walls of a furnace chamber II, a rear partition wall, two side walls of a furnace chamber III and a rear wall through a down pipe and a dispersion pipe, and then respectively connected to a steam space of the boiler barrel through respective upper headers through an eduction pipe; the boiler barrel is introduced into an inlet header of the ceiling superheater through a connecting pipe, the outlet header of the ceiling superheater is led out, the inlet header of the low-temperature superheater is introduced through the connecting pipe, the outlet header of the low-temperature superheater is led out, the inlet header of the medium-temperature superheater is introduced through the connecting pipe after the first-stage water spray desuperheater, the outlet header of the medium-temperature superheater is led out, the high-temperature superheater inlet header is introduced through the connecting pipe after the second-stage water spray desuperheater, the high-temperature superheater outlet header is led out to a superheater outlet steam collection header through the connecting pipe, and the boiler barrel is characterized in that: and a SiC refractory castable is laid on the fire facing surface of the inlet section of the furnace chamber I, and nickel-based alloy materials resistant to high temperature corrosion are subjected to build-up welding on the other fire facing surfaces of the furnace chamber I and the fire facing surface of the furnace chamber II.
2. The high parameter grate waste incineration boiler of claim 1, wherein: and nickel-based alloy materials with high temperature corrosion resistance are subjected to build-up welding on the fire facing surfaces of the furnace chamber III and the water-cooling tube panel.
3. The high parameter grate waste incineration boiler according to claim 1, wherein an evaporator is arranged in the flue, the evaporator is arranged on the front side of the high temperature superheater, the evaporator is composed of an evaporator inlet header, an evaporator outlet header and a plurality of evaporator tube panels, the boiler barrel is connected with the evaporator inlet header through a downcomer and a dispersion tube, and the boiler barrel is connected with the evaporator outlet header through an outlet tube; the boiler barrel is connected with a lower header of the side wrapping wall through a descending pipe and a dispersion pipe, the boiler barrel is connected with an upper header of the side wrapping wall through a leading-out pipe, and the evaporator is suspended on a top plate of a boiler steel structure through a suspension rod.
4. A high parameter grate waste incineration boiler as defined in claim 1 or 2, wherein: the water-cooling tube panels are arranged in 2-8 groups.
5. A high parameter grate waste incineration boiler as defined in claim 1 or 2, wherein: the SiC refractory castable is laid on the fire-facing surface of the furnace chamber I within 2 seconds of the flue gas stroke from the outlet of the incineration hearth.
6. A high parameter grate waste incineration boiler as defined in claim 1 or 2, wherein: the thickness of the nickel-based alloy welding layer is 1.5-3mm, the hardness of the surfacing layer is 240-260HV, and the dilution rate of Fe is less than or equal to 4.5%.
7. A high parameter grate waste incineration boiler as defined in claim 1 or 2, wherein: the high-temperature superheater is formed by a plurality of groups of coiled pipes which are arranged in a downstream mode, and nickel-based alloy materials are welded on the peripheries of the pipes in the front two rows and the pipes in the rear two rows.
8. The high parameter grate waste incineration boiler of claim 2, wherein the outlet header of the ceiling superheater is introduced into the side wrapping wall through a connecting pipe and then enters the inlet header of the low temperature superheater through a connecting pipe.
9. The high parameter grate waste incineration boiler of claim 3, wherein the ceiling superheater is suspended on a top plate of a boiler steel structure through a suspension rod, and sealing structures are arranged at joints of the ceiling superheater, side wrapping walls, the evaporator and the superheater.
10. The high parameter grate waste incineration boiler of claim 7, wherein: the thickness of the nickel-based alloy welding layer formed by surfacing on the periphery of the tube of the high-temperature superheater is 1.5-2.5mm, the hardness of the surfacing layer is 240-260HV, and the dilution rate of Fe is less than or equal to 4.5%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118356A (en) * | 2019-06-03 | 2019-08-13 | 南通万达锅炉有限公司 | A kind of high parameter fire grate garbage burning boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118356A (en) * | 2019-06-03 | 2019-08-13 | 南通万达锅炉有限公司 | A kind of high parameter fire grate garbage burning boiler |
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