CN205760620U - A kind of middle and small burn coal boiler flue gas denitrification system equipment - Google Patents
A kind of middle and small burn coal boiler flue gas denitrification system equipment Download PDFInfo
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- CN205760620U CN205760620U CN201620513318.4U CN201620513318U CN205760620U CN 205760620 U CN205760620 U CN 205760620U CN 201620513318 U CN201620513318 U CN 201620513318U CN 205760620 U CN205760620 U CN 205760620U
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Abstract
The utility model discloses a kind of middle and small burn coal boiler flue gas denitrification system equipment, it is arranged between boiler body exhaust pass and economizer inlet flue duct, including intake stack, supporting steel frame, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe；Boiler body exhaust pass passes sequentially through intake stack, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe connect with economizer inlet flue duct；Described air preheater, denitrification apparatus are arranged on supporting steel frame, and the air inlet duct of air preheater and blast air pipeline communication, and air outlet duct connects with boiler inlet air line.The problem that this utility model solves the middle and small burn coal boiler denitrating flue gas environment protection treating of prior art.
Description
Technical field
This utility model relates to a kind of denitrating system equipment, relates more specifically to a kind of middle and small burn coal boiler flue gas denitrification system equipment.
Background technology
Coal-burning boiler refers to the boiler that fuel is coal (bulk, powdery etc.), coal combustion heat release amount in burner hearth, heat transfer medium is heated to the thermal powerplant of uniform temperature (pressure).Middle and small burn coal boiler is applied relatively broad in national product is lived, and the middle and small burn coal boiler of currently available technology only carries out dust removal process to the flue gas discharged, but containing substantial amounts of nitrogen oxides, wherein NO in the flue gas of discharged from coal-fired boilerxIt is one of the main source of atmosphere pollution, is the one of the main reasons causing numerous environmental pollution such as acid rain and photochemical fog, affects environment for human survival, cause significant damage to natural, ecological.Therefore, develop and be applicable to the denitrating flue gas processing equipment of middle and small burn coal boiler, it is achieved cleaning produces, imperative for the fume environment protection of current middle and small burn coal boiler is administered.
Utility model content
The purpose of the present utility model is to provide a kind of middle and small burn coal boiler flue gas denitrification system equipment, the problem that this middle and small burn coal boiler flue gas denitrification system equipment solves the middle and small burn coal boiler denitrating flue gas environment protection treating of prior art.
In order to realize foregoing invention purpose, a kind of middle and small burn coal boiler flue gas denitrification system equipment of the present utility model, it is arranged between boiler body exhaust pass and economizer inlet flue duct, including intake stack, supporting steel frame, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe；Boiler body exhaust pass passes sequentially through intake stack, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe connect with economizer inlet flue duct；Described air preheater, denitrification apparatus are arranged on supporting steel frame, and the air inlet duct of air preheater and blast air pipeline communication, and air outlet duct connects with boiler inlet air line.
Described air preheater is tubular structure, and heat transfer facial canal uses the light pipe of in-line arrangement.
Described denitrification apparatus is modular body structure, is provided with catalyst packed layer in the casing of this modular body structure in flue gas circulation passage.
Described denitrification apparatus uses selective catalytic reduction denitrating system.
The cigarette wind inlet temperature of described denitrification apparatus is 330 DEG C～380 DEG C.
Use the middle and small burn coal boiler flue gas denitrification system equipment of technical solution of the present invention, flue gas enters intake stack from middle and small burn coal boiler body exhaust pass, flue gas is first through air preheater and air generation heat exchange, flue gas is cooled to denitration preference temperature (330 DEG C～380 DEG C) and enters denitrification apparatus through transitional connection pipe road again, in denitrification apparatus, it is fully contacted generation catalytic chemistry react with catalyst packed layer, the flue gas completing denitration process is finally discharged by wind pipe, enter economizer inlet flue duct, carry out the follow-up flue gas flow of boiler；From the Cryogenic air of blast air pipeline, enter air preheater from air inlet duct, after air and flue gas generation heat exchange are heated to form high temperature air, enter boiler inlet air line by air outlet duct and send into boiler participation burning.This utility model both can be applicable to newly-built coal-burning boiler, is equally applicable for undergoing technological transformation built coal-burning boiler.The suitable flue-gas temperature that denitrification apparatus runs is 330～380 DEG C, the flue-gas temperature removing out of stock device is the highest, coal-burning boiler heat loss is the biggest, this utility model arranges air preheater before denitrification apparatus and realizes the transfer (smoke heat energy is converted into air heat energy) to flue gas heat, achieves the Effec-tive Function of equipment for denitrifying flue gas while ensureing coal-burning boiler operating thermal efficiency.
Accompanying drawing explanation
Fig. 1 is the layout of equipment of a preferred embodiment of a kind of middle and small burn coal boiler flue gas denitrification system equipment that this utility model provides；
Fig. 2 is the top view of Fig. 1；
In figure: 1. boiler body exhaust pass, 2. economizer inlet flue duct, 3. intake stack, 4. supporting steel frame, 5. air preheater, 6. transitional connection pipe road, 7. denitrification apparatus, 8. wind pipe, 9. air inlet duct, 10. blast air pipeline, 11. air outlet duct, 12. boiler inlet air lines, 13. heat transfer facial canals, 14. catalyst packed layers.
Detailed description of the invention
Accompanying drawing discloses the structural representation of preferred embodiment involved by this utility model without limitation；The technical solution of the utility model is explained below with reference to accompanying drawing.
As shown in Figure 1 and Figure 2, this middle and small burn coal boiler flue gas denitrification system equipment, belong to design and the manufacturing technology field of denitrating flue gas auxiliary equipment.Described flue gas denitrification system equipment is arranged between middle and small burn coal boiler body exhaust pass 1 and economizer inlet flue duct 2, including intake stack 3, supporting steel frame 4, air preheater 5 is set gradually in intake stack 3 rear end according to flue gas flow direction, transitional connection pipe road 6, denitrification apparatus 7, wind pipe 8；Described air preheater 5, denitrification apparatus 7 are arranged on supporting steel frame 4；Described air preheater 5 air inlet duct 9 connects with blast air pipeline 10, and air outlet duct 11 connects with boiler inlet air line 12；The other end of described intake stack 3 connects with boiler body exhaust pass 1, and the other end of wind pipe 8 connects with economizer inlet flue duct 2.
Described air preheater 5 is tubular structure, and heat transfer facial canal 14 uses the light pipe of in-line arrangement.
Described denitrification apparatus 7 is modular body structure, is provided with catalyst packed layer 14 in described casing in flue gas circulation passage.
Described denitrification apparatus 7 uses selective catalytic reduction denitrating system.
The cigarette wind inlet temperature of described denitrification apparatus 7 is 330 DEG C～380 DEG C.
Utility model works flow process is as follows: flue gas enters intake stack 3 from middle and small burn coal boiler body exhaust pass 1, flue gas is first through air preheater 5 and air generation heat exchange, flue gas is cooled to denitration preference temperature (330 DEG C～380 DEG C) and enters denitrification apparatus 7 through transitional connection pipe road 6 again, in denitrification apparatus 7, it is fully contacted generation catalytic chemistry react with catalyst packed layer, the flue gas completing denitration process is finally discharged by wind pipe 8, enter economizer inlet flue duct 3, carry out the follow-up flue gas flow of boiler；From the Cryogenic air of blast air pipeline 10, enter air preheater 5 from air inlet duct 9, after air and flue gas generation heat exchange are heated to form high temperature air, enter boiler inlet air line 12 by air outlet duct 11 and send into boiler participation burning.
It is merely to illustrate embodiment of the present utility model above in conjunction with this utility model preferred embodiment described by accompanying drawing; not as to aforementioned utility model purpose and claims content and the restriction of scope; every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, the most still belong to this utility model technology and rights protection category.
Claims (5)
1. a middle and small burn coal boiler flue gas denitrification system equipment, is arranged between boiler body exhaust pass and economizer inlet flue duct, it is characterised in that: include intake stack, supporting steel frame, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe；Boiler body exhaust pass passes sequentially through intake stack, air preheater, transitional connection pipe road, denitrification apparatus, wind pipe connect with economizer inlet flue duct；Described air preheater, denitrification apparatus are arranged on supporting steel frame, and the air inlet duct of air preheater and blast air pipeline communication, and air outlet duct connects with boiler inlet air line.
A kind of middle and small burn coal boiler flue gas denitrification system equipment, it is characterised in that: described air preheater is tubular structure, and heat transfer facial canal uses the light pipe of in-line arrangement.
A kind of middle and small burn coal boiler flue gas denitrification system equipment, it is characterised in that: described denitrification apparatus is modular body structure, is provided with catalyst packed layer in the casing of this modular body structure in flue gas circulation passage.
A kind of middle and small burn coal boiler flue gas denitrification system equipment, it is characterised in that: described denitrification apparatus uses selective catalytic reduction denitrating system.
5. according to middle and small burn coal boiler flue gas denitrification system equipment a kind of described in claim 1 or 4, it is characterised in that: the cigarette wind inlet temperature of described denitrification apparatus is 330 DEG C～380 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513318.4U CN205760620U (en) | 2016-05-31 | 2016-05-31 | A kind of middle and small burn coal boiler flue gas denitrification system equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513318.4U CN205760620U (en) | 2016-05-31 | 2016-05-31 | A kind of middle and small burn coal boiler flue gas denitrification system equipment |
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| CN205760620U true CN205760620U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620513318.4U Active CN205760620U (en) | 2016-05-31 | 2016-05-31 | A kind of middle and small burn coal boiler flue gas denitrification system equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237074A (en) * | 2021-04-29 | 2021-08-10 | 中建材创新科技研究院有限公司 | Heating system and denitration method thereof |
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2016
- 2016-05-31 CN CN201620513318.4U patent/CN205760620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237074A (en) * | 2021-04-29 | 2021-08-10 | 中建材创新科技研究院有限公司 | Heating system and denitration method thereof |
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