CN204017669U - A kind of low cost SCR denitration reactor - Google Patents
A kind of low cost SCR denitration reactor Download PDFInfo
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- CN204017669U CN204017669U CN201420463364.9U CN201420463364U CN204017669U CN 204017669 U CN204017669 U CN 204017669U CN 201420463364 U CN201420463364 U CN 201420463364U CN 204017669 U CN204017669 U CN 204017669U
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Abstract
The utility model relates to a kind of low cost SCR denitration reactor, comprise reactor shell, described reactor shell is provided with smoke inlet, fairing, catalyst layer and exhanst gas outlet successively along the direction of flow of flue gas, described fairing is located near reactor shell smoke inlet, and described catalyst layer is located in the reactor shell of fairing below successively; Described catalyst layer comprises carrier bar and is located at the catalyst module on carrier bar, on the carrier bar of described catalyst module top, is equipped with catalyst module handling apparatus.The utility model is by the optimal design to the carrier bar of catalyst layer, makes carrier bar have carrying concurrently and as the function of guide rail, and it is simple in structure and be difficult for dust stratification; This fairing does not need to arrange supporting construction in addition, thereby greatly reduces reactor monolith steel using amount, makes the structure of Benitration reactor inside simpler; This fairing has the effect of flue gas being carried out to biphase rectification in addition, has preferably rectification effect.
Description
Technical field
The utility model relates to a kind of Benitration reactor, especially a kind of low cost SCR denitration reactor.
Background technology
SCR (SCR) method is to apply in the world maximum, technology is the most ripe a kind of gas denitrifying technologies at present.In this technology, SCR reactor is the core component of realizing this technology, is mainly to provide the place that nitrogen oxide and NH3 in flue gas generate nitrogen G&W on catalyst surface, and its major function is bearing catalyst, for denitration reaction provides space.Meanwhile, even for guaranteeing that the smooth and easy and air-flow of flow of flue gas distributes, be creating conditions smoothly of denitration reaction, need to set up fairing.
In prior art, the catalyst layer of Benitration reactor also needs certain crossbeam to support, when catalyst elements is installed and change, need to it, carry by handling apparatus, in prior art, except being provided with brace summer, the track of independent handling apparatus operation is also set separately on brace summer, not only its structure is comparatively complicated, manufacturing cost is higher, and as easy as rolling off a log dust stratification stream field impact.
In addition, fairing is divided into some parts, and be located on the support member of reactor shell inside, because fairing is made by steel, conduct oneself with dignity larger, need more steel to support, the use amount of steel is larger like this, and stream field causes serious impact, affect the denitration efficiency of flue gas.In order to reduce the weight of fairing, some company techniques connect a plurality of parallel cowling panels to be integrated by a plurality of parallel reinforcing bars, although fairing quality is less, but this fairing only forms unidirectional flow-guiding channel, can only play the effect of single-phase rectifier, its rectification effect is not good, and the rigidity of the fairing of this structure is less, also needs that bracing frame is set separately and supports.
Given this utility model is proposed.
Utility model content
The purpose of this utility model, for overcoming the deficiencies in the prior art, provides a kind of steel use amount less, and stream field impact is less, and structure arranges rationally and be not easy the low cost SCR denitration reactor of dust stratification.
In order to realize this object, the utility model adopts following technical scheme: a kind of low cost SCR denitration reactor, comprise reactor shell, described reactor shell is provided with smoke inlet, fairing, catalyst layer and exhanst gas outlet successively along the direction of flow of flue gas, described fairing is located near reactor shell smoke inlet, and described catalyst layer is located in the reactor shell of fairing below successively; Described catalyst layer comprises carrier bar and is located at the catalyst module on carrier bar, on the carrier bar of described catalyst module top, is equipped with catalyst module handling apparatus.
In aforesaid this low cost SCR denitration reactor, the two ends of described carrier bar with reactor shell madial wall for being fixedly connected with; The shorter both sides of described a plurality of catalyst modules and the contact-making surface of carrier bar are set up on adjacent carrier bar.In order to reduce as far as possible the carrier bar quantity of section part at the carrier bar place of Benitration reactor, catalyst module adopts above-mentioned set-up mode, has reduced carrier bar to entering the impact of the flue gas flow field of inside reactor.
In aforesaid this low cost SCR denitration reactor, described carrier bar comprises top flange plate, web and bottom wing listrium, and top flange plate is connected with bottom wing listrium by web, and to form section be the carrier bar of I-shaped or trench structure.Can adopt the section bar of I shape or trench structure, also can adopt sheet material to be welded into the carrier bar of I-shaped or trench structure.
In aforesaid this low cost SCR denitration reactor, described bottom wing listrium is narrower than top flange plate, and bottom wing listrium is narrower than top flange plate not only can reduce the impact on flue gas flow field, and is not easy to produce a large amount of dust stratifications; The walking mechanism of described handling apparatus slidably or rollably hang on bottom wing listrium.Described handling apparatus is walked bottom wing listrium is up in operating personnel's traction or under controlling by walking mechanism.Described handling apparatus can be installed and turn(a)round setting at catalyst module, during reactor day-to-day operation, handling apparatus can be taken off.
In aforesaid this low cost SCR denitration reactor, described fairing comprises a frame, a plurality of parallel grid plate a are respectively criss-cross arranged and form the rectification passage of a plurality of rectangles or parallelogram and be fixedly connected with frame with grid plate b, and the intersection of grid plate a and grid plate b is for being fixedly connected with.Grid plate a and grid plate b and frame can form a rigid structure that can carry deadweight, removed supporting construction of the prior art, when having reduced steel using amount dramatically, the structure of inside reactor is simplified, has effectively reduced the impact of inside reactor structure on flue gas flow field.The formed rectification passage of grid plate a and grid plate b has the function of biphase rectification, has effectively improved the rectification effect of fairing, for denitration reaction provides good reaction condition, has indirectly improved the denitration efficiency of Benitration reactor.
In aforesaid this low cost SCR denitration reactor, a side of the contiguous catalyst layer of described fairing is provided with a plurality of guide rails; On described guide rail, be also equipped with catalyst module handling apparatus.In existing technology, the top of the catalyst module of the superiors arranges separately the guide rail for the walking of catalyst module handling apparatus, and this has also increased the complexity of the structure of inside reactor.The utility model is connected the guide rail for the walking of catalyst module handling apparatus with fairing, and guide rail two ends are fixedly connected with reactor wall, improved to a certain extent the rigidity of fairing, and made the structure of inside reactor compacter, structure is simpler.
In aforesaid this low cost SCR denitration reactor, described grid plate a is that welding or bolt group are fixedly connected with the intersection of grid plate b; And the frame of fairing is by connecting elements or be directly connected with the sidewall of reactor shell.Fairing can be connected with reactor wall by connector, also can directly be connected with reactor wall by frame, the grid plate a of periphery and the end of grid plate b of the fairing that can also directly form with grid plate b by grid plate a are directly connected with reactor wall, and above-mentioned connected mode is and is fixedly connected with.Welding is fixedly connected with these two kinds of connected modes with bolt group are the modes that are fixedly connected with of commonly using, and preferred weld, also can be divided into whole fairing after a plurality of modules in order installing with convenient in carrying, then by bolt group, modules to be linked together.
In aforesaid this low cost SCR denitration reactor, described grid plate a and grid plate b are comb shaped structure, and grid plate a and grid plate b fasten, and engaging place is for being welded to connect.Grid plate a and grid plate b adopt comb shaped structure to be convenient to the integral assembling of fairing.
In aforesaid this low cost SCR denitration reactor, described guide rail comprises the first plate and the second plate, being located to the vertical or near normal of described the first plate and forming section in the one side of the second plate is guide rail T-shaped or L-type structure, and each catalyst module handling apparatus slidably or is rollably located on guide rail and with the second plate and is connected by its walking mechanism.
In aforesaid this low cost SCR denitration reactor, a plurality of described guide rails T-shaped or L-type structure are distributed in a side of fairing and are fixedly connected with grid plate a by the first plate, and the two ends of described guide rail are fixedly connected with reactor shell madial wall.The guide rail being fixedly connected with reactor madial wall, in the walking track as catalyst module handling apparatus, also plays whole supporting role to fairing, has further improved the integral rigidity of fairing.
In actual production process, catalyst module need to regularly be changed, during replacing, need to carry out handling to it, in traditional technology, carrier bar above catalyst layer arranges separately track or by steel wire, as track, realizes the handling of catalyst module, adopt the track arranging separately, not only increased steel using amount, and flue gas flow field is also produced to certain impact; In addition, Benitration reactor is as easy as rolling off a log dust stratification in use for some time, also need to arrange separately soot blower, it is carried out to deashing processing, soot blower a large amount of ash in purge drops on catalyst layer, reduced the catalytic efficiency of catalyst module, so the simple Benitration reactor of internal structure also can reduce dust stratification amount, to Benitration reactor, cause less impact.
Adopt after technical scheme described in the utility model, bring following beneficial effect:
Compared with prior art, the utility model is by the optimal design to the carrier bar of catalyst layer, makes carrier bar have carrying concurrently and as the function of guide rail, and it is simple in structure and be difficult for dust stratification; This fairing does not need to arrange supporting construction in addition, and between fairing and reactor shell, be that face contacts and the contact of unconventional point, between fairing and reactor shell, there is mutual supporting role, this effect of fairing also can reduce reactor shell steel using amount indirectly, thereby greatly reduce reactor monolith steel using amount, make the structure of Benitration reactor inside simpler; This fairing has the effect of flue gas being carried out to biphase rectification in addition, has preferably rectification effect.
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model;
Fig. 2: the oblique view one of fairing of the present utility model;
Fig. 3: the oblique view two of fairing of the present utility model;
The A-A cutaway view of Fig. 4: Fig. 1;
The B-B cutaway view of Fig. 5: Fig. 1;
The partial enlarged drawing A of Fig. 6: Fig. 4;
Fig. 7: the structural representation of load bearing unit in Fig. 5.
Wherein: 1, smoke inlet, 2, fairing, 3, catalyst layer, 4, exhanst gas outlet, 5, reactor shell, 6, carrier bar, 7, guide rail, 8, grid plate a, 9, grid plate b, 10, rectification passage, 11, the first plate, the 12, second plate, 13, catalyst module handling apparatus, 14, top flange plate, 15, web, 16, bottom wing listrium, 17, connecting elements, 18, catalyst module, 19, frame.
The specific embodiment
Specific embodiment of the utility model one: as shown in Figure 1, a kind of low cost SCR denitration reactor, comprise reactor shell 5, described reactor shell 5 is provided with smoke inlet 1, fairing 2, catalyst layer 3 and exhanst gas outlet 4 successively along the direction of flow of flue gas, described fairing 2 is located near the reactor shell 5 smoke inlet 1, and described catalyst layer 3 is located in the reactor shell 5 of fairing 2 belows successively; Described catalyst layer 3 comprises carrier bar 6 and is located at the catalyst module 18 on carrier bar 6, on the carrier bar 6 of described catalyst module 18 tops, is equipped with catalyst module handling apparatus 13.The two ends of described carrier bar 6 with reactor shell 5 madial walls for being fixedly connected with; Described catalyst module 18 is set up on adjacent carrier bar 6 with the shorter both sides of the contact-making surface of carrier bar 6.
As shown in Fig. 5 or Fig. 7, described carrier bar 6 comprises top flange plate 14, web 15 and bottom wing listrium 16, and top flange plate 14 is connected with bottom wing listrium 16 by web 15, and to form section be I-shaped carrier bar 6.Described bottom wing listrium 16 is narrower than top flange plate 14, and the walking mechanism of described handling apparatus 13 rollably hang on bottom wing listrium 16.
As shown in Figure 2 or Figure 3, described fairing 2 comprises a frame 19, a plurality of parallel grid plate a8 are respectively criss-cross arranged and form the rectification path 10 of a plurality of rectangles and be fixedly connected with frame 19 with grid plate b9, and the intersection of grid plate a8 and grid plate b9 is for being fixedly connected with.
As shown in Figure 3, a side of described fairing 2 contiguous catalyst layers 3 is provided with a plurality of guide rails 7; On described guide rail 7, be also equipped with catalyst module handling apparatus 13.Described grid plate a8 and the intersection of grid plate b9 are for being welded to connect; And the frame 19 of fairing 2 is connected with the sidewall of reactor shell 5 by connecting elements 17.Described grid plate a8 and grid plate b9 are comb shaped structure, and grid plate a8 and grid plate b9 fasten, and engaging place is for being welded to connect.
As shown in Fig. 4 or Fig. 6, described guide rail 7 comprises the first plate 11 and the second plate 12, described the first plate 11 is vertical in the one side of the second plate 12 and forms the guide rail 7 that section is T-shaped type structure, and each catalyst module handling apparatus 13 is rollably located on guide rail 7 and with the second plate 12 and is connected by its walking mechanism.The guide rail 7 of a plurality of described T-shaped structures is distributed in a side of fairing 2 and is fixedly connected with grid plate a8 by the first plate 11, and the two ends of described guide rail 7 are fixedly connected with reactor shell 5 madial walls.
Specific embodiment of the utility model two: a kind of low cost SCR denitration reactor, comprise reactor shell 5, described reactor shell 5 is provided with smoke inlet 1, fairing 2, catalyst layer 3 and exhanst gas outlet 4 successively along the direction of flow of flue gas, described fairing 2 is located near the reactor shell 5 smoke inlet 1, and described catalyst layer 3 is located in the reactor shell 5 of fairing 2 belows successively; Described catalyst layer 3 comprises carrier bar 6 and is located at the catalyst module 18 on carrier bar 6, on the carrier bar 6 of described catalyst module 18 tops, is equipped with catalyst module handling apparatus 13.The two ends of described carrier bar 6 with reactor shell 5 madial walls for being fixedly connected with; Described a plurality of catalyst modules 18 are set up on adjacent carrier bar 6 with the shorter both sides of the contact-making surface of carrier bar 6.Described carrier bar 6 comprises top flange plate 14, web 15 and bottom wing listrium 16, and top flange plate 14 is connected with bottom wing listrium 16 by web 15 and forms the carrier bar 6 that section is trench structure.Described bottom wing listrium 16 is narrower than top flange plate 14, and the walking mechanism of described handling apparatus 13 rollably hang on bottom wing listrium 16.Described fairing 2 comprises a frame 19, and a plurality of parallel grid plate a8 are respectively criss-cross arranged and form the rectification path 10 of a plurality of parallelogram and be fixedly connected with frame 19 with grid plate b9, and the intersection of grid plate a8 and grid plate b9 is for being fixedly connected with.One side of described fairing 2 contiguous catalyst layers 3 is provided with a plurality of guide rails 7; On described guide rail 7, be also equipped with catalyst module handling apparatus 13.Described grid plate a8 and the intersection of grid plate b9 are for being welded to connect; And the frame 19 of fairing 2 is by connecting elements 17 or be directly connected with the sidewall of reactor shell 5.Described grid plate a8 and grid plate b9 are comb shaped structure, and grid plate a8 and grid plate b9 fasten, and engaging place is for being welded to connect.Described guide rail 7 comprises the first plate 11 and the second plate 12, be located to the vertical or near normal of described the first plate 11 in the one side of the second plate 12 and form the guide rail 7 that section is L-type structure, each catalyst module handling apparatus 13 is rollably located on guide rail 7 and with the second plate 12 and is connected by its walking mechanism.The guide rail 7 of a plurality of described L-type structures is distributed in a side of fairing 2 and is fixedly connected with grid plate a8 by the first plate 11, and the two ends of described guide rail 7 are fixedly connected with reactor shell 5 madial walls.
Specific embodiment of the utility model three: a kind of low cost SCR denitration reactor, comprise reactor shell 5, described reactor shell 5 is provided with smoke inlet 1, fairing 2, catalyst layer 3 and exhanst gas outlet 4 successively along the direction of flow of flue gas, described fairing 2 is located near the reactor shell 5 smoke inlet 1, and described catalyst layer 3 is located in the reactor shell 5 of fairing 2 belows successively; Described catalyst layer 3 comprises carrier bar 6 and is located at the catalyst module 18 on carrier bar 6, on the carrier bar 6 of described catalyst module 18 tops, is equipped with catalyst module handling apparatus 13.The two ends of described carrier bar 6 with reactor shell 5 madial walls for being fixedly connected with; Described a plurality of catalyst modules 18 are set up on adjacent carrier bar 6 with the shorter both sides of the contact-making surface of carrier bar 6.Described carrier bar 6 comprises top flange plate 14, web 15 and bottom wing listrium 16, and top flange plate 14 is connected with bottom wing listrium 16 by web 15 and forms the carrier bar 6 that section is I-shape construction.Described bottom wing listrium 16 is narrower than top flange plate 14, and the walking mechanism of described handling apparatus 13 hang on bottom wing listrium 16 slidably.Described fairing 2 comprises a frame 19, and a plurality of parallel grid plate a8 are respectively criss-cross arranged and form the rectification path 10 of a plurality of rectangles and be fixedly connected with frame 19 with grid plate b9, and the intersection of grid plate a8 and grid plate b9 is for being fixedly connected with.One side of described fairing 2 contiguous catalyst layers 3 is provided with a plurality of guide rails 7; On described guide rail 7, be also equipped with catalyst module handling apparatus 13.Described grid plate a8 is that bolt group is fixedly connected with the intersection of grid plate b9; And the frame 19 of fairing 2 is by connecting elements 17 or be directly connected with the sidewall of reactor shell 5.Described grid plate a8 and grid plate b9 are comb shaped structure, and grid plate a8 and grid plate b9 fasten, and engaging place is that bolt group is fixedly connected with.Described guide rail 7 comprises the first plate 11 and the second plate 12, be located to the vertical or near normal of described the first plate 11 in the one side of the second plate 12 and form the guide rail 7 that section is T-shaped structure, each catalyst module handling apparatus 13 is located at slidably on guide rail 7 and with the second plate 12 and is connected by its walking mechanism.A plurality of described guide rails 7 T-shaped or L-type structure are distributed in a side of fairing 2 and are fixedly connected with grid plate a8 by the first plate 11, and the two ends of described guide rail 7 are fixedly connected with reactor shell 5 madial walls.
The foregoing is only preferred embodiment of the present utility model; it should be pointed out that for the ordinary skill in the art, do not departing under the utility model principle prerequisite; can also make various deformation and improvement, this also should be considered as protection domain of the present utility model.
Claims (10)
1. a low cost SCR denitration reactor, comprise reactor shell (5), described reactor shell (5) is provided with smoke inlet (1), fairing (2), catalyst layer (3) and exhanst gas outlet (4) successively along the direction of flow of flue gas, described fairing (2) is located near the reactor shell (5) smoke inlet (1), and described catalyst layer (3) is located in the reactor shell (5) of fairing (2) below successively; Described catalyst layer (3) comprises carrier bar (6) and is located at the catalyst module (18) on carrier bar (6), it is characterized in that: on the carrier bar (6) of described catalyst module (18) top, be equipped with catalyst module handling apparatus (13).
2. low cost SCR denitration reactor according to claim 1, is characterized in that: the two ends of described carrier bar (6) with reactor shell (5) madial wall for being fixedly connected with; Described a plurality of catalyst modules (18) are set up on adjacent carrier bar (6) with the shorter both sides of the contact-making surface of carrier bar (6).
3. low cost SCR denitration reactor according to claim 2, it is characterized in that: described carrier bar (6) comprises top flange plate (14), web (15) and bottom wing listrium (16), top flange plate (14) is connected with bottom wing listrium (16) by web (15), and to form section be the carrier bar (6) of I-shaped or trench structure.
4. low cost SCR denitration reactor according to claim 3, it is characterized in that: described bottom wing listrium (16) is narrower than top flange plate (14), and the walking mechanism of described handling apparatus (13) slidably or rollably hang on bottom wing listrium (16).
5. low cost SCR denitration reactor according to claim 1, it is characterized in that: described fairing (2) comprises a frame (19), the parallel grid plate a (8) of a plurality of difference is criss-cross arranged and forms the rectification passage (10) of a plurality of rectangles or parallelogram and be fixedly connected with frame (19) with grid plate b (9), grid plate a (8) with the intersection of grid plate b (9) for being fixedly connected with.
6. low cost SCR denitration reactor according to claim 1, is characterized in that: a side of the contiguous catalyst layer of described fairing (2) (3) is provided with a plurality of guide rails (7); On described guide rail (7), be also equipped with catalyst module handling apparatus (13).
7. low cost SCR denitration reactor according to claim 5, is characterized in that: described grid plate a (8) is that welding or bolt group are fixedly connected with the intersection of grid plate b (9); And the frame (19) of fairing (2) is by connecting elements (17) or be directly connected with the sidewall of reactor shell (5).
8. low cost SCR denitration reactor according to claim 5, it is characterized in that: described grid plate a (8) and grid plate b (9) are comb shaped structure, and grid plate a (8) and grid plate b (9) fasten, and engaging place is for being welded to connect.
9. low cost SCR denitration reactor according to claim 6, it is characterized in that: described guide rail (7) comprises the first plate (11) and the second plate (12), vertical or the near normal ground of described the first plate (11) is located at and is formed section in the one side of the second plate (12) is T-shaped or the guide rail of L-type structure (7), and each catalyst module handling apparatus (13) slidably or is rollably located at guide rail (7) by its walking mechanism and is gone up and be connected with the second plate (12).
10. low cost SCR denitration reactor according to claim 9, it is characterized in that: a plurality of described guide rails (7) T-shaped or L-type structure are distributed in a side of fairing (2) and are fixedly connected with grid plate a (8) by the first plate (11), and the two ends of described guide rail (7) are fixedly connected with reactor shell (5) madial wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420463364.9U CN204017669U (en) | 2014-08-15 | 2014-08-15 | A kind of low cost SCR denitration reactor |
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| CN201420463364.9U CN204017669U (en) | 2014-08-15 | 2014-08-15 | A kind of low cost SCR denitration reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511074A (en) * | 2017-10-12 | 2017-12-26 | 中国华电科工集团有限公司 | For the catalyst module fixing device and fixing means in flue gas denitration reactor |
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2014
- 2014-08-15 CN CN201420463364.9U patent/CN204017669U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511074A (en) * | 2017-10-12 | 2017-12-26 | 中国华电科工集团有限公司 | For the catalyst module fixing device and fixing means in flue gas denitration reactor |
| CN107511074B (en) * | 2017-10-12 | 2023-12-05 | 中国华电科工集团有限公司 | Catalyst module fixing device and method for flue gas denitration reactor |
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Address after: 100097 Beijing City, Haidian District Zizhuyuan 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP CO., LTD. Address before: 100097 Beijing City, Haidian District Zizhuyuan 120 Patentee before: Datang scientific and technological industry Group Co.,Ltd |