CN110195878A - A kind of hot Secondary Air heating chimney prevents gypsum rain system - Google Patents
A kind of hot Secondary Air heating chimney prevents gypsum rain system Download PDFInfo
- Publication number
- CN110195878A CN110195878A CN201910329811.9A CN201910329811A CN110195878A CN 110195878 A CN110195878 A CN 110195878A CN 201910329811 A CN201910329811 A CN 201910329811A CN 110195878 A CN110195878 A CN 110195878A
- Authority
- CN
- China
- Prior art keywords
- chimney
- hot
- secondary air
- hot secondary
- outer cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 35
- 239000010440 gypsum Substances 0.000 title claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 210000000481 breast Anatomy 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to a kind of hot Secondary Air heating chimneys to prevent gypsum rain system, belongs to coal fired power plant electricity generation system technical field.A kind of hot Secondary Air heating chimney prevents gypsum rain system, including flue gas system and hot Secondary Air heating system；The flue gas system includes boiler, air preheater, deduster, desulfurizing tower and the chimney outer cylinder successively mutually connected from beginning to end by the hot air duct in heat primary air road；The hot Secondary Air heating system includes the primary air fan and secondary air fan that air preheater side is arranged in, and connection air preheater and the control valve and boiler side shutdown flashboard on the hot air duct of the hot secondary air duct of chimney outer cylinder is arranged in.A kind of hot Secondary Air heating chimney provided by the invention prevents gypsum rain system, by improving chimney breast smoke temperature, to avoid the generation of " gypsum rain ".
Description
Technical field
The invention belongs to coal fired power plant electricity generation system technical fields, and in particular to a kind of hot Secondary Air heating chimney prevents stone
Cream rain system.
Background technique
In recent years, country pays much attention to environmental protection, and the coal-burning power plant for having more than 90% is mounted with lime stone-gypsum wet
Flue gas desulphurization system (WFGD), the technology are the most widely used desulfurization technologies in China.This system is divided into or without cigarette
Two kinds of gas reheater (GGH), GGH are mainly used for neat stress after heating desulfurization and since its running environment is severe are easy to happen corrosion
And clogging phenomenon, so that Frequent Troubles, so new-built unit no longer installs GGH device mostly, original system has also been cancelled
GGH device.There is no the WFGD system of GGH, it is difficult after saturation wet flue gas discharge because in smokeless reheating measure, exhaust gas temperature is reduced
To be effectively lifted, spread, the gypsum slurries carried in flue gas are gathered near chimney, and landing forms " gypsum rain ", not only seriously
Influence power plant's surrounding enviroment, or even corrosion equipment.
Summary of the invention
The object of the present invention is to provide a kind of hot Secondary Air heating chimneys to prevent gypsum rain system, by improving chimney breast
Smoke temperature, to avoid the generation of " gypsum rain ".
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of hot Secondary Air heating chimney prevents gypsum rain system, including flue gas system and hot Secondary Air heating system；The cigarette
Gas system includes the boiler successively mutually connected from beginning to end by the hot air duct in heat primary air road, air preheater, deduster, takes off
Sulphur tower and chimney outer cylinder；The hot Secondary Air heating system includes the primary air fan and Secondary Air that air preheater side is arranged in
Machine, and connection air preheater and the control valve and boiler side on the hot air duct of the hot secondary air duct of chimney outer cylinder are set
Turn off flashboard.
Technical solution of the present invention further improvement lies in that: the hot air duct of hot secondary air duct enters the position in chimney outer cylinder
It is set at the 1/2 of chimney outer cylinder height.
Technical solution of the present invention further improvement lies in that: further include chimney internal cylinder, the chimney internal cylinder and chimney outer cylinder
Between chimney body on be evenly arranged with heat release hole.
Technical solution of the present invention further improvement lies in that: on the chimney body between chimney internal cylinder and chimney outer cylinder be arranged heat dissipation
The number in hole is 6-10.
Technical solution of the present invention further improvement lies in that: into the hot secondary air duct between chimney outer cylinder and chimney internal cylinder
The end of hot air duct be provided with elbow vertically upward.
Technical solution of the present invention further improvement lies in that: into the hot secondary air duct between chimney outer cylinder and chimney internal cylinder
Hot air duct be two strands, two strands of hot air ducts are arranged symmetrically about the central axes of chimney outer cylinder.
By adopting the above-described technical solution, the technical effect that the present invention obtains has:
A kind of hot Secondary Air heating chimney provided by the invention prevents gypsum rain system, comes for heating the hot Secondary Air of chimney
From the air preheater heated by high-temperature flue gas, external source is not quoted, reduces other energy consumptions, reaches energy saving purpose, simultaneously
Eliminate " gypsum rain " phenomenon.
A kind of hot Secondary Air heating chimney provided by the invention prevents gypsum rain system, makes full use of electric power factory equipment itself
Allowance, technical risk is smaller, and construction investment volume is smaller, is easily installed implementation.
A kind of hot Secondary Air heating chimney provided by the invention prevents gypsum rain system, the hot air duct of hot secondary air duct into
Entering the position in chimney outer cylinder is at the 1/2 of chimney outer cylinder height, and reasonable height setting is so that the hot wind of hot secondary air duct returns
It flows in chimney and is fully used and desired technical effect can be obtained.
A kind of hot Secondary Air heating chimney provided by the invention prevents gypsum rain system, and chimney is provided with chimney outer cylinder and cigarette
Chimney inner cylinder, the number that heat release hole is arranged on the chimney body between chimney internal cylinder and chimney outer cylinder is 6-10, and enters chimney outer cylinder
The hot air duct of hot secondary air duct between chimney internal cylinder is two strands, central axes pair of two strands of hot air ducts about chimney outer cylinder
Claim arrangement；The topology layout so optimized enable itself a high temperature gases recirculating secondary hot-air uniformly and effectively to cigarette
Flue-gas temperature in chimney avoids the appearance of subsequent gypsum rain.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of hot Secondary Air heating chimney of the invention prevents gypsum rain system；
Fig. 2 is the partial structural diagram that a kind of hot Secondary Air heating chimney of the invention prevents gypsum rain system；
Fig. 3 is the schematic partial cross-sectional view that a kind of hot Secondary Air heating chimney of the invention prevents gypsum rain system；
Wherein, 1, boiler, 2, air preheater, 3, primary air fan, 4, secondary air fan, 5, deduster, 6, desulfurizing tower, 7, outside chimney
Cylinder, 8, chimney internal cylinder, 9, control valve, 10, boiler side shutdown flashboard, 11, hot air duct, 12, heat release hole.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further details the present invention:
The invention discloses a kind of hot Secondary Air heating chimneys to prevent gypsum rain system, chimney breast smoke temperature is improved, to avoid
The generation of " gypsum rain ".Here is specific embodiment:
A kind of hot Secondary Air heating chimney of the invention as shown in Fig. 1 prevents the structural schematic diagram present invention of gypsum rain system
A kind of disclosed hot Secondary Air heating chimney prevents gypsum rain system, including flue gas system and hot Secondary Air heating system；It is described
Flue gas system includes the boiler 1 successively mutually connected from beginning to end by the hot air duct 11 in heat primary air road, air preheater 2, removes
Dirt device 5, desulfurizing tower 6 and chimney outer cylinder 7；The hot Secondary Air heating system includes 2 side of air preheater is arranged in primary
Blower 3 and secondary air fan 4, and be arranged on the hot air duct 11 of hot secondary air duct of connection air preheater 2 and chimney outer cylinder 7
Control valve 9 and boiler side turn off flashboard 10.
Further, the position that the hot air duct 11 of hot secondary air duct enters in chimney outer cylinder 7 is 7 height of chimney outer cylinder
At 1/2.
Specifically, chimney type is steel inner cylinder sleeve-type chimney in embodiment provided by the invention, chimney height is
210 meters.The hot blast temperature extracted out of hot secondary air duct hot air duct 11 is 360 DEG C, hot air flow 10%.To guarantee cigarette
The temperature field of chimney outer wall, which can be realized, to be uniformly distributed, and hot wind is entered in chimney outer cylinder 7 by the hot air duct 11 of hot secondary air duct
Entrance height be 96 meters.
Further, a kind of hot Secondary Air heating chimney of the invention as shown in Fig. 3 prevents the office of gypsum rain system
Portion's schematic cross-section, it further includes chimney internal cylinder 8, institute that a kind of hot Secondary Air heating chimney provided by the invention, which prevents gypsum rain system,
It states and is evenly arranged with heat release hole 12 on the chimney body between chimney internal cylinder 8 and chimney outer cylinder 7.
The number that heat release hole 12 is arranged on chimney body between chimney internal cylinder 8 and chimney outer cylinder 7 is 6-10.Specifically,
In embodiment provided by the invention, the quantity of chimney top hot wind heat release hole 12 is 8,0.76 meter of diameter, away from chimney outer cylinder 7
0.12 meter of outer wall；Setting not only can guarantee that hot wind can heat the flue gas in inner cylinder very well in this way, but also can be by the heat after heating chimney
Wind discharges in time.
Further, a kind of hot Secondary Air heating chimney of the invention as shown in Fig. 2 prevents the office of gypsum rain system
Portion's structural schematic diagram is provided with into the end of the hot air duct 11 of the hot secondary air duct between chimney outer cylinder 7 and chimney internal cylinder 8
Elbow vertically upward.Into the hot secondary air duct between chimney outer cylinder 7 and chimney internal cylinder 8 hot air duct 11 be two strands, two
Stock hot air duct 11 is arranged symmetrically about the central axes of chimney outer cylinder 8.
To sum up, the hot wind extracted from hot secondary air duct by hot air duct 11 enter chimney outer cylinder 7 and chimney internal cylinder 8 it
Between heat release hole 12 flue gas, the hot wind in chimney is entered by the control of control valve 9 on the hot air duct 11 of hot secondary air duct
Flow effectively improves chimney breast smoke temperature to realize, avoids the appearance of subsequent gypsum rain.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (6)
1. a kind of hot Secondary Air heating chimney prevents gypsum rain system, it is characterised in that: add including flue gas system and hot Secondary Air
Hot systems；The flue gas system include by the hot air duct (11) in heat primary air road successively mutually the boiler (1) of head and the tail connection,
Air preheater (2), deduster (5), desulfurizing tower (6) and chimney outer cylinder (7)；The hot Secondary Air heating system includes that setting exists
The primary air fan (3) and secondary air fan (4) of air preheater (2) side, and setting is outside connection air preheater (2) and chimney
Control valve (9) and boiler side shutdown flashboard (10) on the hot air duct (11) of the hot secondary air duct of cylinder (7).
2. a kind of hot Secondary Air heating chimney according to claim 1 prevents gypsum rain system, it is characterised in that: heat is secondary
The hot air duct (11) in air duct enters at the position in chimney outer cylinder (7) is chimney outer cylinder (7) height 1/2.
3. a kind of hot Secondary Air heating chimney according to claim 1 prevents gypsum rain system, it is characterised in that: further include
Chimney internal cylinder (8) is evenly arranged with heat release hole (12) on the chimney body between the chimney internal cylinder (8) and chimney outer cylinder (7).
4. a kind of hot Secondary Air heating chimney according to claim 3 prevents gypsum rain system, it is characterised in that: in chimney
The number that heat release hole (12) are arranged on chimney body between cylinder (8) and chimney outer cylinder (7) is 6-10.
5. a kind of hot Secondary Air heating chimney according to claim 3 prevents gypsum rain system, it is characterised in that: enter cigarette
The end of the hot air duct (11) of hot secondary air duct between chimney outer cylinder (7) and chimney internal cylinder (8) is provided with vertically upward curved
Head.
6. a kind of hot Secondary Air heating chimney according to claim 3 prevents gypsum rain system, it is characterised in that: enter cigarette
The hot air duct (11) of hot secondary air duct between chimney outer cylinder (7) and chimney internal cylinder (8) is two strands, and two bursts of hot air ducts (11) are closed
It is arranged symmetrically in the central axes of chimney outer cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329811.9A CN110195878A (en) | 2019-04-23 | 2019-04-23 | A kind of hot Secondary Air heating chimney prevents gypsum rain system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329811.9A CN110195878A (en) | 2019-04-23 | 2019-04-23 | A kind of hot Secondary Air heating chimney prevents gypsum rain system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110195878A true CN110195878A (en) | 2019-09-03 |
Family
ID=67752020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910329811.9A Pending CN110195878A (en) | 2019-04-23 | 2019-04-23 | A kind of hot Secondary Air heating chimney prevents gypsum rain system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110195878A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1438499A (en) * | 1972-12-21 | 1976-06-09 | Beaumont Ltd F E | Method for the treatment of flue gases in chimneys |
| CN202915385U (en) * | 2012-11-14 | 2013-05-01 | 辽宁省电力有限公司电力科学研究院 | Mixed type smoke purifying and heating device |
| CN204358747U (en) * | 2014-12-17 | 2015-05-27 | 合肥恒力电子装备公司 | A kind of industrial electro kiln band heating chimney |
| CN206508767U (en) * | 2017-02-27 | 2017-09-22 | 天津普惠节能换热设备有限公司 | Flue gas disappears white equipment |
| CN109631071A (en) * | 2018-12-06 | 2019-04-16 | 李申强 | A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke |
-
2019
- 2019-04-23 CN CN201910329811.9A patent/CN110195878A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1438499A (en) * | 1972-12-21 | 1976-06-09 | Beaumont Ltd F E | Method for the treatment of flue gases in chimneys |
| CN202915385U (en) * | 2012-11-14 | 2013-05-01 | 辽宁省电力有限公司电力科学研究院 | Mixed type smoke purifying and heating device |
| CN204358747U (en) * | 2014-12-17 | 2015-05-27 | 合肥恒力电子装备公司 | A kind of industrial electro kiln band heating chimney |
| CN206508767U (en) * | 2017-02-27 | 2017-09-22 | 天津普惠节能换热设备有限公司 | Flue gas disappears white equipment |
| CN109631071A (en) * | 2018-12-06 | 2019-04-16 | 李申强 | A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190903 |
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| RJ01 | Rejection of invention patent application after publication |