CN106139889A - A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning - Google Patents
A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning Download PDFInfo
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- CN106139889A CN106139889A CN201510101100.8A CN201510101100A CN106139889A CN 106139889 A CN106139889 A CN 106139889A CN 201510101100 A CN201510101100 A CN 201510101100A CN 106139889 A CN106139889 A CN 106139889A
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- boiler
- catalyst
- flue
- full load
- burner
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to full load flue-gas denitration process and the device of a kind of Industrial Boiler, including: boiler, high-temperature heat-exchanging, cryogenic heat exchanger, little burner, catalyst, air preheater, chimney etc. form；It is characterized in that: on the flue between the cryogenic heat exchanger and place's catalyst of boiler back end ductwork, increase a little burner, it can be to use the burner of the forms such as light diesel fuel, coal dust or natural gas, when boiler at low load runs, little burner is put into, afterburning mode is used directly to improve catalyst inlet cigarette temperature, meet the operating temperature requirements of catalyst, it is achieved Industrial Boiler full load denitration.It is safe, simple, practical and reliable, and environmental protection cost requirement can be greatly reduced, and has the highest promotional value.
Description
Technical field
The invention belongs to denitrating flue gas field, be specifically related to a kind of Industrial Boiler and use full load flue-gas denitration process and the device of afterburning.
Background technology
Nitrogen oxides is as one of main atmosphere pollution, receive more and more attention, it it is the key object of country's Environmental capacity, in denitration of boiler smoke field, its operation principle is under 280-420 degree celsius temperature, the reducing agent ammonia sprayed in nitrogen oxides in boiler smoke and upstream flue issues raw reduction reaction in the effect of catalyst and produces nitrogen and water, it is achieved the removal of nitrogen oxides.But, in the boiler at low load stage, the cigarette temperature of the catalyst installed position of flue is on the low side, the operating temperature requirements of catalyst can not be met, thus cause denitration effect the best, it is impossible to accomplish that qualified discharge, long-play may also result in the major safety risks such as catalyst failure, air preheater blocking.
Summary of the invention
For the problem overcoming above-mentioned prior art to exist, the invention provides a kind of technique carrying out afterburning at the Industrial Boiler back-end ductwork little burner of installation, in the boiler at low load operation phase, little burner is put into, improve catalyst inlet cigarette temperature, meet the operating temperature requirements of catalyst, it is achieved the denitration of boiler at low load operation phase, it is safe, simple, practical and reliable, reaches the requirement of Industrial Boiler full load denitration.
Technical scheme is as follows:
A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning, including: boiler (1), high-temperature heat-exchanging (2), cryogenic heat exchanger (3), little burner (4), catalyst (5), air preheater (6), chimney (7) etc. form；It is characterized in that: on the flue between the cryogenic heat exchanger (3) and place's catalyst (5) of boiler (1) back-end ductwork, increase a little burner (4), it can be to use the burner of the forms such as light diesel fuel, coal dust or natural gas, when boiler (1) underrun, little burner (4) is put into, afterburning mode is used directly to improve catalyst (5) inlet flue gas temperature, meet the operating temperature requirements of catalyst (5), it is achieved Industrial Boiler full load denitration.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
The present invention is full load flue-gas denitration process and the device of a kind of Industrial Boiler, and it includes: boiler (1), high-temperature heat-exchanging (2), cryogenic heat exchanger (3), little burner (4), catalyst (5), air preheater (6), chimney (7).
Its technological process is as follows:
1, on the flue between the cryogenic heat exchanger (3) and place's catalyst (5) of boiler (1) back-end ductwork, a little burner (4) is increased；
2, when boiler (1) underrun, little burner (4) is put into, use afterburning mode directly to improve catalyst (5) inlet flue gas temperature, meet the operating temperature requirements of catalyst (5)；
In sum: this invention is safe, simple, practical and reliable, easy for installation, can reach the requirement of Industrial Boiler full load denitration, be an invention having very much promotional value.
Finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but those skilled in the art is to be understood that, in the form and details it can be made various change, the spirit and scope of the present invention limited without departing from claims.
Claims (3)
1. Industrial Boiler uses the full load flue-gas denitration process of afterburning and a device, including: boiler (1), high-temperature heat-exchanging (2),
Cryogenic heat exchanger (3), little burner (4), catalyst (5), air preheater (6), chimney (7) etc. form；Its feature
It is: on the flue between the cryogenic heat exchanger (3) and place's catalyst (5) of boiler (1) back-end ductwork, increase a little combustion
Burner (4), puts into little burner (4) when boiler (1) underrun, uses afterburning mode directly to improve catalyst
(5) inlet flue gas temperature, meets the operating temperature requirements of catalyst (5), it is achieved Industrial Boiler full load denitration.
A kind of Industrial Boiler the most according to claim 1 uses full load flue-gas denitration process and the device of afterburning, and its feature exists
Little burner (4) is have employed in this process system.
A kind of Industrial Boiler the most according to claim 2 uses full load flue-gas denitration process and the device of afterburning, and its feature exists
In this process system, have employed the energy of little burner (4) come from it and can use light diesel fuel, coal dust or natural gas etc.
The burner of form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101100.8A CN106139889A (en) | 2015-03-09 | 2015-03-09 | A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101100.8A CN106139889A (en) | 2015-03-09 | 2015-03-09 | A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106139889A true CN106139889A (en) | 2016-11-23 |
Family
ID=58063197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510101100.8A Pending CN106139889A (en) | 2015-03-09 | 2015-03-09 | A kind of Industrial Boiler uses full load flue-gas denitration process and the device of afterburning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106139889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432197A (en) * | 2020-11-20 | 2021-03-02 | 胜利国电(东营)热电有限公司 | SCR inlet flue gas temperature reheating device and method based on boiler secondary air |
| CN114659082A (en) * | 2022-03-28 | 2022-06-24 | 西安热工研究院有限公司 | Method and system for increasing low-load denitration inlet smoke temperature by co-combustion of blast furnace gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785959A (en) * | 2010-01-22 | 2010-07-28 | 中国计量学院 | Selective non-catalytic NOx control method for auxiliary re-burning temperature control |
| CN103277788A (en) * | 2013-05-30 | 2013-09-04 | 万平 | SCR temperature regulating system of boiler and method for regulating smoke temperature of SCR inlet of boiler |
| CN103363540A (en) * | 2013-06-21 | 2013-10-23 | 广东电网公司电力科学研究院 | Temperature rising afterburning system for utility boiler operating at low load |
| CN204063081U (en) * | 2014-04-15 | 2014-12-31 | 国家电网公司 | The flue structure that a kind of SCR flue gas denitrification system inlet flue gas temperature is adjustable |
-
2015
- 2015-03-09 CN CN201510101100.8A patent/CN106139889A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785959A (en) * | 2010-01-22 | 2010-07-28 | 中国计量学院 | Selective non-catalytic NOx control method for auxiliary re-burning temperature control |
| CN103277788A (en) * | 2013-05-30 | 2013-09-04 | 万平 | SCR temperature regulating system of boiler and method for regulating smoke temperature of SCR inlet of boiler |
| CN103363540A (en) * | 2013-06-21 | 2013-10-23 | 广东电网公司电力科学研究院 | Temperature rising afterburning system for utility boiler operating at low load |
| CN204063081U (en) * | 2014-04-15 | 2014-12-31 | 国家电网公司 | The flue structure that a kind of SCR flue gas denitrification system inlet flue gas temperature is adjustable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432197A (en) * | 2020-11-20 | 2021-03-02 | 胜利国电(东营)热电有限公司 | SCR inlet flue gas temperature reheating device and method based on boiler secondary air |
| CN114659082A (en) * | 2022-03-28 | 2022-06-24 | 西安热工研究院有限公司 | Method and system for increasing low-load denitration inlet smoke temperature by co-combustion of blast furnace gas |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |