CN101109514A - Smoke discharging system - Google Patents
Smoke discharging system Download PDFInfo
- Publication number
- CN101109514A CN101109514A CNA2007101203925A CN200710120392A CN101109514A CN 101109514 A CN101109514 A CN 101109514A CN A2007101203925 A CNA2007101203925 A CN A2007101203925A CN 200710120392 A CN200710120392 A CN 200710120392A CN 101109514 A CN101109514 A CN 101109514A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- exchange element
- flue
- heat exchanging
- desulfurizing tower
- 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 23
- 238000007599 discharging Methods 0.000 title abstract description 3
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 23
- 239000010865 sewage Substances 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 19
- 239000003546 flue gas Substances 0.000 description 19
- 239000002002 slurry Substances 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The invention provides a smoke-discharging system, which comprises a desulfurizing tower, a heat exchanging element, a chimney, a raw flue and a clean flue. Wherein, the raw flue is connected in at a first place at top of the heat exchanging element, passes the heat exchanging element, and is connected out at a third position at the bottom of the heat exchanging element, and then is connected with the desulfurizing tower; the clean flue is connected out from the desulfurizing tower, connected with a fourth position at the bottom of the heat exchanging element, passes the heat exchanging element, and is connected out at a second position at the top of the heat exchanging element, finally connected with the chimney. The flue is so arranged that the raw smoke passes GGH heat exchanging element from up to down, clean smoke passes the GGH heat exchanging element from down to up, this can effectively reduce the possibility of scaling in the passes GGH heat exchanging element, hence guarantee the safe and steady running of the desulfurizing system.
Description
Technical field
The present invention relates to a kind of smoke evacuation system, relate in particular to a kind of smoke evacuation system that prevents the heat exchange element fouling.
Background technology
At present, as shown in Figure 1, the desulphurization system design of band GGH heat exchange element, usually adopt the former flue gas in the former flue 16 to enter, leave, enter desulfurizing tower 10 from the top from GGH heat exchange element bottom, after desulfurizing tower 10 desulfurization, clean flue gas in the clean flue 18 enters from GGH heat exchange element top, and process GGH heat exchange element 12 heating backs are discharged from GGH heat exchange element bottom and entered chimney 14, just common alleged following current arrangement.
The above-mentioned following current flue arrangement of current employing causes 12 foulings of GGH heat exchange element easily.This be because: the clean flue gas that comes out from desulfurizing tower 10 is through demister 11, and mist to GGH heat exchange element 12, causes 12 foulings of GGH heat exchange element with clean flue stream easily; The S ﹠ W that clean flue gas in the clean flue carries drips and is subjected to gravity effect, is attached on the GGH heat exchange element 12, causes the GGH fouling.
And when desulphurization system started, the excessive or desulfurizing tower sprayed slurry of the foam of desulfurizing tower 10 was poured in down a chimney, and flow on the GGH heat exchange element 12 through former flue 16, caused 12 foulings of GGH heat exchange element; Clean flue gas in the clean flue 18 condenses at GGH heat exchange element 12 top arrival ends (being commonly referred to as cold junction), forms acid solution, flows to GGH heat exchange element 12 bottoms (being commonly referred to as the hot junction) under the effect of gravity and flue gas stream, can pollute more heat exchange element.Above-mentioned slurries are attached on the GGH heat exchange element, make that GGH heat exchange element 12 is moistening, when GGH heat exchange element 12 when clean fume side goes to former fume side, moistening heat exchange element very easily adsorbs the dust that carries in the former flue gas, and through behind the former flue gas drying, further sclerosis forms the not hard scale of easy-clear.So, need carry out regular cleaning or replacing to the GGH heat exchange element of fouling in order to guarantee normal, the stable operation of desulphurization system.Therefore, the following current arrangement of existing smoke evacuation system has increased cost of system maintenance, has caused the waste of great amount of manpower and material resources.
Therefore, in fact be necessary to propose a kind ofly to prevent that the smoke evacuation of heat exchange element fouling is to overcome above-mentioned shortcoming.
Summary of the invention
The objective of the invention is to propose a kind of smoke evacuation system that prevents the heat exchange element fouling, to overcome the defective of prior art.
The smoke evacuation system that prevents the heat exchange element fouling of the present invention is design like this: a kind of smoke evacuation system comprises: desulfurizing tower, heat exchange element, chimney, former flue and clean flue; Wherein, former flue inserts from the primary importance at heat exchange element top, passes heat exchange element, and the 3rd position bottom heat exchange element picks out, and is connected to then on the desulfurizing tower; Clean flue picks out from desulfurizing tower, is connected to the 4th position of heat exchange element bottom, passes heat exchange element, and the second place from the top of heat exchange element picks out then, is connected to chimney.
Preferably, described smoke evacuation system also comprises demister, and described demister is connected between desulfurizing tower and the clean flue.More preferably, the 6th position of the clean flue between demister and heat exchange element is provided with drainpipe.
Preferably, described smoke evacuation system also comprises booster fan, and described booster fan is connected with described clean flue.
Preferably, be provided with sewage draining exit in the 5th position of former flue bottom.
By adopting the smoke evacuation system that prevents the heat exchange element fouling of the present invention's design, can prevent the fouling of heat exchange element in the desulphurization system, guarantee normal, the stable operation of desulphurization system, and reduced the maintenance cost of system.
Description of drawings
Fig. 1 is the smoke evacuation system schematic diagram of the desulphurization system of prior art;
Fig. 2 is the smoke evacuation system schematic diagram of desulphurization system of the present invention.
The specific embodiment
Fig. 2 is the smoke evacuation system schematic diagram of desulphurization system of the present invention.Described smoke evacuation system comprises: desulfurizing tower 10, heat exchange element 12, chimney 14, former flue 16 and clean flue 18; Wherein, former flue 16 inserts from the primary importance 121 at heat exchange element 12 tops, passes heat exchange element 12, and the 3rd position 123 bottom heat exchange element picks out, and is connected to then on the desulfurizing tower 10; Clean flue 18 picks out from desulfurizing tower 10, is connected to the 4th position 124 of heat exchange element bottom, passes heat exchange element 10, and the second place 122 from the top of heat exchange element picks out then, is connected to chimney 14.
As shown in the figure, flue gas in the former flue 16 enters GGH heat exchange element top from booster fan 13 primary importance 121, through GGH heat exchange element 12 heat exchange cooling back from the 3rd position 123 of GGH heat exchange element bottom to desulfurizing tower 10 desulfurization, through the clean flue gas after the desulfurization, enter clean flue 18 through behind the demister 11, only flue gas enters from the 4th position 124 of GGH heat exchange element bottom, flows to chimney 14 discharges through the second place 122 from GGH heat exchange element top after 12 heating of GGH heat exchange element.
Desulphurization system is when starting, slurries or foam that desulfurizing tower 10 overflows by former flue 16, because the effect of flue gas stream, can compile in the 5th position 161 of former flue 16 bottoms, be difficult to arrive GGH heat exchange element 12, the sewage draining exit of the slurries that compile in this position by being provided with in the 5th position 161 is so that regularly discharge slurries.
Clean flue gas after the desulfurization through behind the demister 11, carries a spot of droplet in the clean flue gas, by GGH heat exchange element 12 time, under the effect of gravity, condense into acid solution in the bottom of GGH heat exchange element 12, the acid solution of condensing can not be diffused into other positions of GGH heat exchange element.
Enter the former flue gas in the desulfurizing tower, through demister 11, dirty foam is wherein tackled by demister after the desulfurization, enters clean flue 18, arrives minimum point the 6th position 181 of clean flue then, can not flow on the GGH heat exchange element.At this lowest point place adjutage is set, discharging regularly gets final product.
In desulphurization system, when the pressure reduction of GGH heat exchange element 18 reaches certain value, during for example for design 1.5 times of differential pressure, can add online high-pressure washing water to remove the incrustation on the GGH heat exchange element in primary importance 121.In this flue arrangement, the incrustation that high pressure washing is disposed is with former flue gas flow direction separation of flow tower 10, can not stain GGH heat exchange element 12 once more, and because the flow direction of the direction of High-Pressure Water and former flue gas is consistent, slurries behind the high pressure water washing are by self gravitation and airflow direction effect, go out clearly easilier.
Arrange with respect to common following current flue, flue arrangement of the present invention by make former flue gas from top to bottom, clean flue gas is from bottom to top by the GGH heat exchange element, can reduce the possibility of GGH heat exchange element fouling effectively, reduced acid corrosion, thereby ensured that desulphurization system can move with security and stability.
It will be understood by those skilled in the art that the present invention is not limited to the description of present embodiment, any in the claim scope of being added change or revise all in the scope of protection of present invention.
Claims (5)
1. a smoke evacuation system is characterized in that, comprising: desulfurizing tower, heat exchange element, chimney, former flue and clean flue; Wherein, former flue inserts from the primary importance at heat exchange element top, passes heat exchange element, and the 3rd position bottom heat exchange element picks out, and is connected to then on the desulfurizing tower; Clean flue picks out from desulfurizing tower, is connected to the 4th position of heat exchange element bottom, passes heat exchange element, and the second place from the top of heat exchange element picks out then, is connected to chimney.
2. smoke evacuation system according to claim 1 is characterized in that, also comprises demister, and described demister is connected between desulfurizing tower and the clean flue.
3. smoke evacuation system according to claim 2 is characterized in that, the 6th position of the clean flue between demister and heat exchange element is provided with drainpipe.
4. smoke evacuation system according to claim 1 is characterized in that, also comprises booster fan, and described booster fan is connected with described clean flue.
5. smoke evacuation system according to claim 1 is characterized in that, is provided with sewage draining exit in the 5th position of former flue bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101203925A CN101109514A (en) | 2007-08-17 | 2007-08-17 | Smoke discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101203925A CN101109514A (en) | 2007-08-17 | 2007-08-17 | Smoke discharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109514A true CN101109514A (en) | 2008-01-23 |
Family
ID=39041691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101203925A Pending CN101109514A (en) | 2007-08-17 | 2007-08-17 | Smoke discharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101109514A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418933A (en) * | 2012-01-16 | 2012-04-18 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN109489733A (en) * | 2018-12-28 | 2019-03-19 | 郑州科源耐磨防腐工程有限公司 | Chimney gypsum rain real-time monitoring system of the thermal power plant based on water balance |
-
2007
- 2007-08-17 CN CNA2007101203925A patent/CN101109514A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418933A (en) * | 2012-01-16 | 2012-04-18 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN102418933B (en) * | 2012-01-16 | 2014-01-08 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN109489733A (en) * | 2018-12-28 | 2019-03-19 | 郑州科源耐磨防腐工程有限公司 | Chimney gypsum rain real-time monitoring system of the thermal power plant based on water balance |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090612 Address after: 4 floor, intercontinental tower 16, ande Road, Dongcheng District, Beijing, zip code: 100011 Applicant after: China Shenhua Energy Co Co-applicant after: Shenhua Guohua (Beijing) Electric Power Research Institute Co., Ltd. Address before: 4 floor, intercontinental tower 16, ande Road, Dongcheng District, Beijing, zip code: 100011 Applicant before: China Shenhua Energy Co Co-applicant before: Beijing Guohua Electric Power Engineering Technology Co., Ltd. |