CN109631071A - A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke - Google Patents
A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke Download PDFInfo
- Publication number
- CN109631071A CN109631071A CN201811485057.XA CN201811485057A CN109631071A CN 109631071 A CN109631071 A CN 109631071A CN 201811485057 A CN201811485057 A CN 201811485057A CN 109631071 A CN109631071 A CN 109631071A
- Authority
- CN
- China
- Prior art keywords
- steam
- flue
- heating
- smoke
- eliminating white
- 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
- 239000000779 smoke Substances 0.000 title claims abstract description 55
- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 24
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 13
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 8
- 230000023556 desulfurization Effects 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 5
- MXWHMTNPTTVWDM-NXOFHUPFSA-N mitoguazone Chemical compound NC(N)=N\N=C(/C)\C=N\N=C(N)N MXWHMTNPTTVWDM-NXOFHUPFSA-N 0.000 abstract description 7
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15081—Reheating of flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses one kind to heat eliminating white smoke device for coal steam-electric plant smoke, flue including discharging flue gas after desulfurization, it is characterized in that, it further include the sleeve heater being located on the flue lateral wall, the sleeve heater is equipped with the hydrophobic interface of the vapor interface for being passed through steam and discharge condensed water.The present invention makes flue gas heating achieve the purpose that complete eliminating white smoke by the lower pressure extraction gas source that the sleeve heater being set on flue lateral wall is passed through steam turbine.Flue gas eliminating white smoke plant investment cost of the present invention reduces by 90% or more, no more than 1/10th of common MGGH system investment cost, and does not influence flue internal structure, by test measurement, changes to flue gas resistance small.The present invention uses steam turbine low-pressure pumping to heat gas source, makes full use of steam condensation hot, operating cost is far below common MGGH system.
Description
Technical field
The present invention relates to thermal power plant technical field of environment protection equipment, more particularly to a kind of heat for coal steam-electric plant smoke to disappear
White cigarette device and the method for heating eliminating white smoke.
Background technique
It is planned according to national prevention and control of air pollution, drug in some provinces environmental protection policy requires thermal power plant flue gas after desulfurization to carry out
Dehumidify the white processing that disappears, and needs to heat 6~10 DEG C again after flue gas cool-down dehumidifying and achievees the purpose that completely eliminate white cigarette.It is currently used
Desulfurization eliminating white smoke equipment is MGGH system, as shown in Figure 1, flue gas enters desulfurizing tower, the cigarette after desulfurization after deduster dedusting
Gas passes through smoke stack emission after flue gas heater heats.Water after wherein flue gas heater is heated up using hot-water heater adds
Heat, the water after exchanging heat in flue gas heater, which returns to after hot-water heater reheats, is transported to flue gas heater by circulating pump
It is recycled.Utilization closed cycle water circulating-heating eliminating white smoke scheme in MGGH system, equipment is more, and system is excessively huge,
Investment is too high, and operating cost is also very high.
Summary of the invention
The object of the present invention is to provide it is a kind of for coal steam-electric plant smoke heat eliminating white smoke device and heat eliminating white smoke method,
To solve the above problem.
To achieve the goals above, the present invention adopts the following technical scheme:
One kind heating eliminating white smoke device for coal steam-electric plant smoke, and the flue including discharging flue gas after desulfurization, further includes being located at
Sleeve heater on the flue lateral wall, the sleeve heater are equipped with the vapor interface for being passed through steam and discharge condensation
The hydrophobic interface of water.
Preferably, the flue inner sidewall is fixedly connected with heating fin.
Preferably, the vapor interface is 4.
Preferably, the size of the vapor interface is DN100.
Preferably, the hydrophobic interface is 2.
Preferably, the size of the hydrophobic interface is DN50.
Preferably, 1 non-condensing steam outlet and 4 safety valves are additionally provided on the sleeve heater side wall.
Preferably, multiple securing plates are equipped in the cavity that the sleeve heater inner wall and flue outer wall are formed.
Preferably, the lower pressure extraction gas source of the vapor interface connection steam turbine, uses the lower pressure extraction gas source of steam turbine
Sleeve heater is heated, and then to the flue heating being set in sleeve heater, it is complete that white cigarette heating reaches white cigarette
It eliminates；The lower pressure extraction to have exchanged heat condenses into condensed water and is discharged by hydrophobic interface.
Preferably, operating pressure≤0.4MPa of the sleeve heater, the vapor flux that winter low pressure is evacuated gas source are
10-14t/h, summer 3-4.2t/h.
Beneficial effects of the present invention are as follows:
1, the present invention is made by the lower pressure extraction gas source that the sleeve heater being set on flue lateral wall is passed through steam turbine
Flue gas heating achievees the purpose that complete eliminating white smoke.Flue gas eliminating white smoke plant investment cost of the present invention reduces by 90% or more, no
More than 1/10th of common MGGH system investment cost, and flue internal structure is not influenced, by test measurement, to flue gas
Resistance variation is small.The present invention uses steam turbine low-pressure pumping to heat gas source, makes full use of steam condensation hot, operating cost is remote
Lower than common MGGH system.
2, the present invention is fixedly connected with the structure of heating fin using flue inner sidewall, can effectively improve vapour in sleeve heater
The heat exchanger effectiveness of flue gas in the lower pressure extraction and flue of turbine.
3, the present invention sets 4 vapor interfaces, while can guarantee vapor flux, steam is allowed quickly to divide in sleeve heater
Cloth is uniform.
4, sleeve heater side wall of the invention is equipped with 1 incondensable gas discharge outlet and 4 safety valves, can effectively prevent
Only pressure is excessive in sleeve heater causes equipment damage or safety accident occurs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of MGGH system.
Fig. 2 is the horizontal cross-sectional view for coal steam-electric plant smoke heating eliminating white smoke device；
Fig. 3 is the vertical plane cross-sectional view for coal steam-electric plant smoke heating eliminating white smoke device.
It is as shown in the figure: the non-condensing steam outlet of 1-, 2- heating fin, 3- vapor interface, the hydrophobic interface of 4-, 5- flue,
6- sleeve heater, 7- securing plate, 8- hot-water heater, 9- deduster, 10- desulfurizing tower, 11- flue gas heater, 12- circulation
Pump, 13- chimney, 14- safety valve.
Specific embodiment
The following is further explained with reference to the attached drawings the embodiment of the present invention.
As Figure 2-3, a kind of to heat eliminating white smoke device for coal steam-electric plant smoke, the flue including discharging flue gas after desulfurization
5,5 diameter of flue is 8.2m, and 5 inner wall of flue is fixedly connected with heating fin 2, and heating fin 2 is made of the titanium plate of thickness 1mm,
Amount to 250.
Flue gas eliminating white smoke device further includes that the height being located on 5 lateral wall of flue is the sleeve heater of 10m
6, sleeve heater 6 is made using the Q235 steel plate after 8mm, and spacing is between 5 outer wall of 6 outer wall of sleeve heater and flue
At interval of 1m left and right settings securing plate 7 in the cavity that 150mm, 6 inner wall of sleeve heater and 5 outer wall of flue are formed.
The rated pressure of the sleeve heater 6 be 0.6MPa, 6 lateral wall top of sleeve heater be equipped with 4 having a size of
DN100 is passed through the vapor interface 3 and 2 of steam having a size of the hydrophobic interface 4 of DN50 discharge condensed water, the sleeve heater 6
Lateral wall is equipped with the safety valve 14 of 1 non-condensing steam outlet 1 and 4 DN100, PN0.3 having a size of DN10, it is ensured that sleeve
6 operating pressure of heater is no more than 0.4MPa.
Method using the heating eliminating white smoke of above-mentioned coal steam-electric plant smoke heating eliminating white smoke device is as follows: the steam is connect
Mouth 3 connects the lower pressure extraction gas source of steam turbines, is heated using the lower pressure extraction gas source of steam turbine to sleeve heater 3, into
And heated to the flue 5 being set in sleeve heater 6, white cigarette heating reaches white cigarette and completely eliminates；The lower pressure extraction to have exchanged heat
Condensed water is condensed into discharge by hydrophobic interface 4.
Wherein the design parameter of coal steam-electric plant smoke heating eliminating white smoke device is as follows:
(1) heating load 10MW, 10 DEG C of flue gas temperature rise design value, it is expected that 12 DEG C of temperature rise, the operating pressure of sleeve heater 6
≤0.4MPa。
(2) 5 diameter 8.2m of flue, the heat exchange area 250m of flue 5 and sleeve heater 62, heat 2 heating surface (area) (HS of fin
For 750m2, heating load 10kw/m2。
(3) sleeve heater 6 and securing plate 7 use steel plate 20t, and heating fin 2 uses titanium plate 1.75t.
Show that the influence to existing desulfurization equipment is as follows through overtesting:
(1) heating fin 2 increases flue gas resistance≤5Pa.
(2) 5 wall of bringing-up section 10m flue wrapped up by sleeve heater 6 heats up 150 DEG C, 5 swell increment 18mm of flue.
(3) winter heating load 10MW, vapor flux 10-14t/h, can about completely eliminate white cigarette in 12t/h；Summer
Heating load 3MW, vapor flux are about 3-4.2t/h, and white cigarette can be about completely eliminated in 3.6t/h.Environmental protection policy is not forced
Temperature increase requirement is heated, to guarantee that economy, heating temperature reach vision and receive range.
The course of work of the invention is as follows:
Vapor interface 3 connects the lower pressure extraction gas source of steam turbine, the space formed to sleeve heater 6 and 5 outer wall of flue
It is passed through steam, heat is transported to the heating fin 2 of 5 inner wall of flue connection, flue 5 and heating fin 2 by steam by 5 wall of flue
Heat exchange is carried out with the flue gas in flue 5, flue gas is made to heat up in flow process, achievees the purpose that eliminate white cigarette.After heat exchange
Steam condensation is discharged at condensed water by hydrophobic interface, and the uncooled steam of small part is discharged by non-condensing steam outlet 1.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (10)
1. one kind heats eliminating white smoke device for coal steam-electric plant smoke, the flue including discharging flue gas after desulfurization, which is characterized in that also
Including the sleeve heater being located on the flue lateral wall, the sleeve heater be equipped be passed through steam vapor interface and
Discharge the hydrophobic interface of condensed water.
2. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that the flue
Inner sidewall is fixedly connected with heating fin.
3. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that the steam
Interface is 4.
4. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that the steam
The size of interface is DN100.
5. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that described hydrophobic
Interface is 2.
6. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that described hydrophobic
The size of interface is DN50.
7. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that the sleeve
1 non-condensing steam outlet and 4 safety valves are additionally provided on heater side wall.
8. according to claim 1 a kind of for coal steam-electric plant smoke heating eliminating white smoke device, which is characterized in that the sleeve
Multiple securing plates are equipped in the cavity that heater inner wall and flue outer wall are formed.
9. a kind of heating using the heating eliminating white smoke device of coal steam-electric plant smoke described in claim 1-8 any claim disappears white
The method of cigarette, which is characterized in that the lower pressure extraction gas source of the vapor interface connection steam turbine uses the lower pressure extraction of steam turbine
Gas source heats sleeve heater, and then to the flue heating being set in sleeve heater, white cigarette heating reaches white cigarette
It completely eliminates；The lower pressure extraction to have exchanged heat condenses into condensed water and is discharged by hydrophobic interface.
10. the method for the heating eliminating white smoke according to claim 9 using coal steam-electric plant smoke heating eliminating white smoke device, special
Sign is that operating pressure≤0.4MPa of the sleeve heater, the vapor flux that winter low pressure is evacuated gas source is 10-14t/h,
Summer is 3-4.2t/h.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811485057.XA CN109631071A (en) | 2018-12-06 | 2018-12-06 | A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke |
| PCT/CN2019/078658 WO2020073613A1 (en) | 2018-10-08 | 2019-03-19 | Device and method for flue gas desulfurization and consumption reduction in heat-engine plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811485057.XA CN109631071A (en) | 2018-12-06 | 2018-12-06 | A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109631071A true CN109631071A (en) | 2019-04-16 |
Family
ID=66071479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811485057.XA Pending CN109631071A (en) | 2018-10-08 | 2018-12-06 | A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109631071A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195878A (en) * | 2019-04-23 | 2019-09-03 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of hot Secondary Air heating chimney prevents gypsum rain system |
| CN110906314A (en) * | 2019-12-19 | 2020-03-24 | 江苏正阳锅炉有限公司 | Reheater device for eliminating chimney white fog emission |
| CN114857607A (en) * | 2022-04-18 | 2022-08-05 | 中石化宁波工程有限公司 | Chimney structure capable of effectively eliminating white smoke |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195878A (en) * | 2019-04-23 | 2019-09-03 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of hot Secondary Air heating chimney prevents gypsum rain system |
| CN110906314A (en) * | 2019-12-19 | 2020-03-24 | 江苏正阳锅炉有限公司 | Reheater device for eliminating chimney white fog emission |
| CN114857607A (en) * | 2022-04-18 | 2022-08-05 | 中石化宁波工程有限公司 | Chimney structure capable of effectively eliminating white smoke |
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| PB01 | Publication | ||
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Application publication date: 20190416 |