CN105485705A - Integrated structure of reactor frame and economizer protection plate - Google Patents
Integrated structure of reactor frame and economizer protection plate Download PDFInfo
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- CN105485705A CN105485705A CN201510314411.2A CN201510314411A CN105485705A CN 105485705 A CN105485705 A CN 105485705A CN 201510314411 A CN201510314411 A CN 201510314411A CN 105485705 A CN105485705 A CN 105485705A
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- economizer
- backplate
- protection plate
- apron plate
- reactor
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Abstract
The invention belongs to the technical field of combining tail flue gas treatment with a body structure of a boiler, and specifically discloses a fixed connection structure for a reactor frame and an economizer protection plate. The fixed connection structure is reasonable in structural arrangement, and capable of solving shortages in the existing structure. An economizer front protection plate, an economizer rear protection plate and two economizer side protection plates are arranged at the periphery of an economizer; the two economizer side protection plates are connected with the economizer front protection plate and the economizer rear protection plate respectively to form a flue gas channel; the upper ends of the economizer front protection plate, the economizer rear protection plate and the economizer side protection plates are fixedly connected with a base of a denitration reactor respectively; the lower ends of the economizer front protection plate, the economizer rear protection plate and the economizer side protection plates are fixedly connected with a lower connection flue; upper support beams and lower support beams are arranged in the flue gas channel; the upper support beams and the lower support beams penetrate through the economizer front protection plate and the economizer rear protection plate respectively, and are fixedly connected with the economizer front protection plate and the economizer rear protection plate; and the two ends exposed to the economizer front protection plate and the economizer rear protection plate, of each lower support beam, are slidably supported on a cross beam outside a tail flue respectively.
Description
Technical field
The invention belongs to the technical field of boiler tail flue gas process and body construction combination, be specially the fixed connection structure of a kind of reactor frame and economizer backplate.
Background technology
At present along with the enforcement of national environmental protection new policies, clear and definite requirement (100mg/NM2) is had to the NOX discharge in boiler tail flue gas, for pulverized-coal fired boiler, then must increase SCR(SCR) system, for CFBB, SNCR can be adopted, but general user also can reserve SCR denitration space.The denitration temperature window of SCR system is 360 DEG C ~ 380 DEG C, this temperature is generally in the middle of boiler two groups of economizers, boiler economizer region is generally backplate furnace wall structure, economizer piping is supported on backplate by ventilation beam, backplate is internal insulation structure, backplate temperature and environment temperature are more or less the same, and casing frame welds with bottom support beam, and inner heat insulation furnace wall is fixed on backplate by brick-supporting rack.One group of Benitration reactor is added in the middle of present economizer, reactor is because the reason of self structure, Surgery therapy structure must be made, see Fig. 1, because reactor is thermal expansion structure, and economizer backplate is fixed structure, both belong to different structural system, need to establish beam to support respectively, expand owing to there is three-dimensional, middle connected with non-metal expansion joint 17.And economizer backplate is exported to the connection flue of air preheater, be generally Surgery therapy structure, the inside holding with economizer backplate is also incompatible, and scene is directly welding, but the time is long, due to expansion issues, easily weld seam is torn and causes leakage.
As can be seen from the above, owing to arranging Benitration reactor between two groups of economizers, if economizer still inside holding way routinely, then 1, need to arrange reactor brace summer, catalyst heavier (as 150MW pulverized-coal fired boiler, catalyst weight is about 450t), beam is just higher, cause arrangement space not enough, sometimes need integral raising, raise the cost.2, reactor to economizer needs to arrange connection flue, and nonmetal flexible expansion joint also will be arranged in centre, both makes complex structure, can increase space again.3, economizer backplate is exported to the connection flue of air preheater, has got back to again Surgery therapy structure, and this part structure time is long, also can produce leakage.4, because large load divides at different supporting layers, but two-layer distance is little again, and general can be designed one deck rigid layer, and when earthquake, can produce two-layer horizontal force, the horizontal force of one deck just can only rely on steel column itself to resist in addition, unfavorable to structure.
Summary of the invention
In order to solve the problem, the invention provides the fixed connection structure of a kind of reactor frame and economizer backplate, its reasonable structural arrangement, weak point in existing structure can be solved.
Its technical scheme is such: the fixed connection structure of a kind of reactor frame and economizer backplate, it comprises the back-end ductwork being communicated with uptake flue, described back-end ductwork is furnished with Benitration reactor and economizer from top to bottom, described Benitration reactor outside portion is provided with reactor backplate, described reactor backplate is provided with external thermal insulation, it is characterized in that, described economizer surrounding is provided with economizer apron plate, backplate and two economizer side guard plates after economizer, two described economizer side guard plates respectively with described economizer apron plate, after economizer, backplate is connected to form exhaust gases passes, described economizer apron plate, after economizer, backplate and economizer side guard plate upper end are fixedly connected with the base of described Benitration reactor respectively, lower end is fixedly connected with bottom respectively and connects flue, brace summer and lower support beam is provided with in described exhaust gases passes, described upper brace summer, lower support beam is each passed through described economizer apron plate, backplate after economizer and with described economizer apron plate, after economizer, backplate is fixedly connected with, described lower support beam exposes to described economizer apron plate, after economizer, the two ends of backplate are slidably supported on the crossbeam of described back-end ductwork outside respectively, described upper brace summer connects described lower support beam by column, described economizer apron plate, backplate after economizer, economizer side guard plate and expose to described economizer apron plate, the described upper brace summer of backplate after economizer, lower support beam is provided with described external thermal insulation.
It is further characterized in that, after described economizer apron plate, economizer, backplate is provided with perpendicular rigid beam and horizontal stiffness beam;
After described economizer apron plate, economizer, the junction of backplate and described upper brace summer, lower support beam is provided with gusset and strengthens structure;
Flue internal overarm support is provided with between backplate after described economizer apron plate, economizer;
Four described upper brace summers, lower support beams are provided with in described exhaust gases passes.
After adopting structure of the present invention, column is provided with between upper brace summer and lower support beam, can upper brace summer load be reached on lower support beam, the load of Benitration reactor is by economizer apron plate, after economizer, backplate also can be passed on lower support beam, lower support beam two ends are slidably supported on the crossbeam of back-end ductwork outside, relative movement can be there is on crossbeam when being subject to expanding, overall structure saves reactor brace summer, middle connection flue and non-metal expansion joint, can not occur to reveal, structural configuration is more reasonable, efficiently solve weak point in existing structure.
Accompanying drawing explanation
Fig. 1 is prior art structural representation;
Fig. 2 is structural representation of the present invention;
Fig. 3 is right view in Fig. 2.
Detailed description of the invention
See Fig. 2, shown in Fig. 3, the fixed connection structure of a kind of reactor frame and economizer backplate, it comprises the back-end ductwork being communicated with uptake flue 1, back-end ductwork is furnished with Benitration reactor 2 and economizer from top to bottom, Benitration reactor 2 outside portion is provided with reactor backplate 3, reactor backplate 3 is provided with external thermal insulation 16, economizer surrounding is provided with economizer apron plate 4, backplate 5 and two economizer side guard plates 6 after economizer, two economizer side guard plates 6 respectively with economizer apron plate 4, after economizer, backplate 5 is connected to form exhaust gases passes by end weld, economizer apron plate 4, after economizer, backplate 5 and economizer side guard plate 6 upper end are welded to connect the base of Benitration reactor 2 respectively, lower end is welded to connect bottom respectively and connects flue 7, brace summer 8 and lower support beam 9 is provided with in exhaust gases passes, all adopt the splicing of Q345R high-strength low-alloy steel plate, guarantee bending resistance, shearing resistance and amount of deflection reach requirement, upper brace summer 8, lower support beam 9 is each passed through economizer apron plate 4, backplate 5 after economizer and with economizer apron plate 4, after economizer, backplate 5 is welded to connect, lower support beam 9 exposes to economizer apron plate 4, after economizer, the two ends of backplate 5 are slidably supported on the crossbeam 10 of back-end ductwork outside respectively, upper brace summer 8 connects lower support beam 9 by column 11, economizer apron plate 4, backplate 5 after economizer, economizer side guard plate 6 and expose to economizer apron plate 4, the upper brace summer 8 of backplate 5 after economizer, lower support beam 9 is provided with external thermal insulation 16, economizer side guard plate 6 only backplate self and external thermal insulation 16 weight and little Benitration reactor 2 cylindrical shell weight, load is very little, load can be reached after economizer apron plate 4, economizer on backplate 5 by the weld seam in bight.
Because the load of Benitration reactor 2 is positioned at backplate 5 place after economizer apron plate 4, economizer, therefore after economizer apron plate 4, economizer, backplate 5 is provided with perpendicular rigid beam 12 and horizontal stiffness beam 13, strengthens intensity; After economizer apron plate 4, economizer, backplate 5 is provided with gusset with the junction of upper brace summer 8, lower support beam 9 and strengthens structure 14, is specially polylith gusset and surrounds square structure, reinforcement intensity; Be provided with flue internal overarm support 15 between backplate 5 after economizer apron plate 4, economizer, after preventing economizer apron plate 4, economizer, backplate 5 internal cause is subject to negative pressure and inwardly shrinks; Be provided with four upper brace summer 8, lower support beams 9 in exhaust gases passes, guarantee support strength.In the present invention, Benitration reactor upper end is provided with guide frame, the supporting construction of exhaust gases passes is provided with position limiting structure, ensure integrally-built stable.
Claims (5)
1. the fixed connection structure of a reactor frame and economizer backplate, it comprises the back-end ductwork being communicated with uptake flue, described back-end ductwork is furnished with Benitration reactor and economizer from top to bottom, described Benitration reactor outside portion is provided with reactor backplate, described reactor backplate is provided with external thermal insulation, it is characterized in that, described economizer surrounding is provided with economizer apron plate, backplate and two economizer side guard plates after economizer, two described economizer side guard plates respectively with described economizer apron plate, after economizer, backplate is connected to form exhaust gases passes, described economizer apron plate, after economizer, backplate and economizer side guard plate upper end are fixedly connected with the base of described Benitration reactor respectively, lower end is fixedly connected with bottom respectively and connects flue, brace summer and lower support beam is provided with in described exhaust gases passes, described upper brace summer, lower support beam is each passed through described economizer apron plate, backplate after economizer and with described economizer apron plate, after economizer, backplate is fixedly connected with, described lower support beam exposes to described economizer apron plate, after economizer, the two ends of backplate are slidably supported on the crossbeam of described back-end ductwork outside respectively, described upper brace summer connects described lower support beam by column, described economizer apron plate, backplate after economizer, economizer side guard plate and expose to described economizer apron plate, the described upper brace summer of backplate after economizer, lower support beam is provided with described external thermal insulation.
2. the fixed connection structure of a kind of reactor frame according to claim 1 and economizer backplate, is characterized in that, after described economizer apron plate, economizer, backplate is provided with perpendicular rigid beam and horizontal stiffness beam.
3. the fixed connection structure of a kind of reactor frame according to claim 1 and economizer backplate, is characterized in that, after described economizer apron plate, economizer, the junction of backplate and described upper brace summer, lower support beam is provided with gusset and strengthens structure.
4. the fixed connection structure of a kind of reactor frame according to claim 1 and economizer backplate, is characterized in that, is provided with flue internal overarm support after described economizer apron plate, economizer between backplate.
5. the fixed connection structure of a kind of reactor frame according to claim 1 and economizer backplate, is characterized in that, is provided with four described upper brace summers, lower support beams in described exhaust gases passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510314411.2A CN105485705B (en) | 2015-06-10 | 2015-06-10 | A kind of reactor frame and economizer backplate integral structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510314411.2A CN105485705B (en) | 2015-06-10 | 2015-06-10 | A kind of reactor frame and economizer backplate integral structure |
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| CN105485705A true CN105485705A (en) | 2016-04-13 |
| CN105485705B CN105485705B (en) | 2017-11-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737525A (en) * | 2017-11-09 | 2018-02-27 | 无锡华光锅炉股份有限公司 | The attachment structure of Benitration reactor housing and economizer backplate |
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| US4522157A (en) * | 1982-09-30 | 1985-06-11 | Lummus Crest Inc. | Convection section assembly for process heaters |
| EP1083385A2 (en) * | 1999-09-08 | 2001-03-14 | BBP Energy GmbH | Steam generator |
| DE102005023488A1 (en) * | 2005-05-21 | 2006-11-30 | Plauen Stahl Technologie Gmbh | Tower frame for a suspended coal-burning boiler, giving steam for electricity generation, is erected in segments by raising each installed segment assembly for the next prepared segment to be pushed in and secured below |
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| CN202146712U (en) * | 2011-06-27 | 2012-02-22 | 南京龙源环保有限公司 | Smoke catalytic reduction denitration device capable of mixing uniformly, equalizing and guiding flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737525A (en) * | 2017-11-09 | 2018-02-27 | 无锡华光锅炉股份有限公司 | The attachment structure of Benitration reactor housing and economizer backplate |
| CN107737525B (en) * | 2017-11-09 | 2023-10-20 | 无锡华光环保能源集团股份有限公司 | Connection structure of denitration reactor shell and economizer backplate |
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| Publication number | Publication date |
|---|---|
| CN105485705B (en) | 2017-11-21 |
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Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |
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