CN204345683U - For improving the device of denitration inlet flue gas temperature - Google Patents
For improving the device of denitration inlet flue gas temperature Download PDFInfo
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- CN204345683U CN204345683U CN201420834573.XU CN201420834573U CN204345683U CN 204345683 U CN204345683 U CN 204345683U CN 201420834573 U CN201420834573 U CN 201420834573U CN 204345683 U CN204345683 U CN 204345683U
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Abstract
For improving the device of denitration inlet flue gas temperature.Existing heating surface is very easy to when being arranged in boiler at low load cause denitration inlet flue gas temperature on the low side, and denitrification apparatus cannot be put into operation, and causes flue gas nitrogen oxide discharge capacity to exceed standard.Composition of the present utility model comprises: economizer, described economizer comprises first order economizer (7) and second level economizer (3), second level economizer inlet duct (1) is mounted on second level economizer entrance header (2) of denitration entrance, the second level economizer that described second level economizer entrance header is linked in sequence described, connecting line (5), second level economizer exit header (4) and first order economizer entrance header (6), described first order economizer entrance header is mounted on the first order economizer after boiler back end ductwork superheater.The utility model is for improving denitration inlet flue gas temperature.
Description
technical field:
the utility model relates to a kind of device for improving denitration inlet flue gas temperature.
background technology:
current station boiler environment protection emission index is strict all the more, and particularly the discharge of nitrogen oxide need control at 100 mg/Nm
3
, even 50mg/Nm
3
below, this just needs Denitration in Boiler device can bringing normally into operation under wide load.Nearly all station boiler all proposes requirement to the wide load operation of denitrification apparatus.But, be very easy to when existing heating surface is arranged in boiler at low load cause denitration inlet flue gas temperature on the low side, denitrification apparatus cannot be put into operation, cause flue gas nitrogen oxide discharge capacity to exceed standard.
utility model content:
the purpose of this utility model is to provide a kind of device for improving denitration inlet flue gas temperature.
above-mentioned object is realized by following technical scheme:
for improving the device of denitration inlet flue gas temperature, its composition comprises: economizer, described economizer comprises first order economizer and second level economizer, described second level economizer inlet duct is mounted on the second level economizer entrance header of denitration entrance, described second level economizer entrance header is linked in sequence second level economizer, connecting line, second level economizer exit header and described first order economizer entrance header, and described first order economizer entrance header is mounted on the first order economizer after boiler back end ductwork superheater.
the described device for improving denitration inlet flue gas temperature, described first order economizer entrance header is connected with connecting pipe between the economizer of the second level, between described second level economizer, connecting pipe is connected with second level economizer exit header, described second level economizer exit header is connected with the second level economizer being arranged on denitration exhaust pass, and described second level economizer entrance header is connected with second level economizer inlet duct.
beneficial effect:
1. the utility model is applicable to the high power plant of the wide load operation of Denitration in Boiler device, discharged nitrous oxides requirement.Environment protection emission for increasingly stringent requires to develop the wide load operation of applicable denitration device of power plant, ensure the bringing normally into operation of denitrification apparatus, this not only solves domestic denitration device of power plant can not the problem of wide load operation, and widened the operating load scope of boiler controller system further, there is good economy, adaptability and market potential, there is good development prospect.
heating surface arrangement form of the present utility model is applied in before and after Denitration in Boiler device, can improve denitration inlet flue gas temperature, is ensureing, on the basis that boiler efficiency is constant, to realize the object of the wide load operation of denitrification apparatus.According to different former boiler economizer inlet flue gas temperature design two-stage coal economizer structure, ensure that denitration inlet flue gas temperature meets denitrification apparatus and to put into operation requirement.
economizer is placed in boiler back end ductwork and denitration exhaust pass by the utility model, improves the outlet cigarette temperature of first order economizer, and ensure that second level economizer exit cigarette temperature is with hierarchical arrangement economizer exit cigarette temperature is not identical or lower slightly, boiler efficiency is constant simultaneously.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present utility model.
detailed description of the invention:
embodiment 1:
for improving the device of denitration inlet flue gas temperature, its composition comprises: economizer, described economizer comprises first order economizer 7 and second level economizer 3, described second level economizer inlet duct is mounted on the second level economizer entrance header 2 of denitration entrance, described second level economizer entrance header is linked in sequence second level economizer, connecting line 5, second level economizer exit header 4 and described first order economizer entrance header 6, described first order economizer entrance header is mounted on the first order economizer after boiler back end ductwork superheater, described second level economizer entrance header is connected with second level economizer inlet duct 1.
embodiment 2:
the heating surface arrangement apparatus for improving denitration inlet flue gas temperature according to embodiment 1, described first order economizer entrance header is connected with connecting pipe between the economizer of the second level, between described second level economizer, connecting pipe is connected with second level economizer exit header, described second level economizer exit header is connected with the second level economizer being arranged on denitration exhaust pass, and described second level economizer entrance header is connected with second level economizer inlet duct.
core of the present utility model has two-stage economizer, and after comprising superheater, economizer and Benitration reactor export economizer.Described two-stage economizer is all furnished with header, is connected by connecting pipe.
Claims (2)
1. one kind for improving the device of denitration inlet flue gas temperature, its composition comprises: economizer, it is characterized in that: described economizer comprises first order economizer and second level economizer, second level economizer inlet duct is mounted on the second level economizer entrance header of denitration entrance, described second level economizer entrance header is linked in sequence second level economizer, connecting line, second level economizer exit header and described first order economizer entrance header, described first order economizer entrance header is mounted on the first order economizer after boiler back end ductwork superheater.
2. the device for improving denitration inlet flue gas temperature according to claim 1, it is characterized in that: described first order economizer entrance header is connected with connecting pipe between the economizer of the second level, between described second level economizer, connecting pipe is connected with second level economizer exit header, described second level economizer exit header is connected with the second level economizer being arranged on denitration exhaust pass, and described second level economizer entrance header is connected with second level economizer inlet duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834573.XU CN204345683U (en) | 2014-12-25 | 2014-12-25 | For improving the device of denitration inlet flue gas temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834573.XU CN204345683U (en) | 2014-12-25 | 2014-12-25 | For improving the device of denitration inlet flue gas temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204345683U true CN204345683U (en) | 2015-05-20 |
Family
ID=53228948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420834573.XU Active CN204345683U (en) | 2014-12-25 | 2014-12-25 | For improving the device of denitration inlet flue gas temperature |
Country Status (1)
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| CN (1) | CN204345683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332514A (en) * | 2019-08-22 | 2019-10-15 | 哈尔滨锅炉厂有限责任公司 | A kind of efficient wide load double reheat tower-type furnace economizer hierarchical arrangement system |
-
2014
- 2014-12-25 CN CN201420834573.XU patent/CN204345683U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332514A (en) * | 2019-08-22 | 2019-10-15 | 哈尔滨锅炉厂有限责任公司 | A kind of efficient wide load double reheat tower-type furnace economizer hierarchical arrangement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |