CN104984560A - Flue gas dewatering system - Google Patents
Flue gas dewatering system Download PDFInfo
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- CN104984560A CN104984560A CN201510407436.7A CN201510407436A CN104984560A CN 104984560 A CN104984560 A CN 104984560A CN 201510407436 A CN201510407436 A CN 201510407436A CN 104984560 A CN104984560 A CN 104984560A
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Abstract
The invention relates to a flue gas dewatering system. In the existing desulfurization system, flue gas takes away a great amount of water after passing through the desulfurization system and waste of water is caused. The flue gas dewatering system provided by the invention comprise a water tank (2), a cooling coil (4), a water pan (5), a demister (6), a chimney (7) and a cooling medium system (17), wherein the cooling coil (4) is arranged in a flue at the lower portion of the chimney (7), the demister (6) is arranged above the chimney, the water pan (5) is located below the demister (6), the water pan (5) is connected with the water tank (2) outside the chimney through a connecting pipe, the inlet and outlet of the cooling coil (4) are connected to the cooling medium system (17), and the inlet of the cooling coil (4) and the cooling medium system (17) are provided with cooling water pumps (15) to enable cooling medium to cyclically flow in the cooling coil (4) and the cooling medium system (17). By using the flue gas dewatering system, a great amount of water is saved.
Description
Technical field
Portion of water contained by saturated wet flue gas after the present invention is applied to and removes heat-engine plant wet desulfurization, and recycling in addition, realize good social and economic benefits.
Background technology
in order to realize the requirement of new promulgation " Emission standards of air pollutants for coal-fired " (GB 13223-2011), nearly all station boiler needs to install desulfurizer additional, the desulfurizer of China overwhelming majority adopts wet desulphurization, the method desulphurization reaction speed is fast, efficiency is high, sulfur-removing additives utilization rate is high, the desulfurization degree of 90% can be reached, make sulfur dioxide (SO2) emissions meet related request.But flue gas can take away a large amount of moisture after desulphurization system simultaneously, 1 600MW unit year draining about 1,500,000 tons, and China increases fired power generating unit newly mostly build the western coal-producing area in, west area water resource is deficienter, has deepened the contradiction between environmental resource and economic development further.If the moisture in flue gas can be reclaimed and in addition recycling, the fired power generating unit construction of water-deficient area is provided and supports energetically, realize good social benefit.
Summary of the invention
1, technical problem to be solved:
Existing desulphurization system, flue gas can take away a large amount of moisture after desulphurization system, causes the waste of water.
2, technical scheme:
The present invention utilizes the chance of transformation chimney to make chimney have dehydrating function, can remove portion of water contained by saturated wet flue gas, and collect in addition recycling, realize the doulbe-sides' victory of society and economic worth.Cardinal principle of the present invention utilizes cooling medium and the higher wet flue gas of temperature to carry out heat exchange, and flue gas can reduce certain temperature.Along with the reduction of temperature, saturated moist air water content can decline, and just has aqueous water and separates out.Through the effect of demister, liquid water collection is got up.
The invention provides a kind of fume-dehydrating system, comprise water tank 2, cooling coil 4, water-collecting tray 5, demister 6, chimney 7, cooling medium system 17, cooling coil 4 is arranged in the flue of chimney 7 bottom, demister 6 is arranged on above chimney, water-collecting tray 5 is positioned at below demister 6, water-collecting tray 6 is connected with the water tank 2 of chimney outside by adapter, import and the outlet of cooling coil 4 are all connected to cooling medium system 17, import and the cooling medium system 17 of cooling coil 4 arrange cooling water pump 15, cooling medium is circulated in cooling coil 4 and cooling medium system 17.
Described cooling medium is water or refrigerant.
Expanded joint fin outside described cooling coil 4, fin material is identical with cooling coil 4 material.
Be provided with draining pump 1 and connect described water tank 2, the water reclaimed is delivered to field of employment.
Described demister 6 is hollow structure, and inside can be used for cooling water to circulate, and being arranged in parallel with described cooling coil 4 of described demister 6, forms smoke heat exchanging system jointly.
Flue gas enters chimney place and installs temperature transmitter 10, go out chimney place and flue gas analysis system 8 is installed, cooling medium system 17 installs temperature transmitter 10, pressure transmitter 14 on pipeline, water tank 2 is installed liquid level gauge 3, and above all instrument signal Real-time Feedbacks are to control unit 18.
3, beneficial effect:
By this fume-dehydrating system, the water in flue gas is spun off from flue gas, water is utilized again, saved a large amount of water.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, structure of the present invention is, a kind of fume-dehydrating system, comprise water tank 2, cooling coil 4, water-collecting tray 5, demister 6, chimney 7, cooling medium system 17, cooling coil 4 is arranged in the flue of chimney 7 bottom, demister 6 is arranged on above chimney, water-collecting tray 5 is positioned at below demister 6, water-collecting tray 6 is connected with the water tank 2 of chimney outside by adapter, import and the outlet of cooling coil 4 are all connected to cooling medium system 17, import and the cooling medium system 17 of cooling coil 4 arrange cooling water pump 15, cooling medium is circulated in cooling coil 4 and cooling medium system 17.
Described cooling medium is water or refrigerant.
Embodiment 1
Cooling medium is refrigerant.
At chimney underflue built with cooling coil 4, cooling coil 4 is the making of corrosion resistant metal pipe, and refrigerant enters from refrigerant import, in cooling coil 4 internal flow, evaporation, absorbs a large amount of heats, flows out with after flue gas heat exchange from refrigerant exit.In order to better heat transfer effect, expanded joint fin outside cooling coil 4, fin material is identical with cooling coil 4 material.Refrigerant after heat exchange again enters cooling coil and is recycled after cooling medium system 17 compression process.Flue-gas temperature after cooled reduces, saturation degree is corresponding reduction also, have a large amount of steam and be condensed into little water droplet, process through demister 6, liquid little water droplet is blocked, and collects in the water-collecting tray 5 below demister 6, and water-collecting tray 5 has adapter to lead to chimney outside to water tank 2, water tank is connected to draining pump 1, the water reclaimed can be delivered to field of employment.Demister 6 is installed above cooling coil 4, liquid little water droplet is blocked, collect in the water-collecting tray 5 below demister 6, water-collecting tray 5 is also above cooling coil 4, water-collecting tray 5 has adapter to lead to chimney outside to water tank 2, water tank is connected to draining pump 1, the water reclaimed can be delivered to field of employment.When equipment runs, flue gas enters chimney place and installs temperature transmitter 10, go out chimney place and flue gas analysis system 8 is installed, cooling medium system 17 installs temperature transmitter 10, pressure transmitter 14 on pipeline, water tank 2 is installed liquid level gauge 3, above all instrument signal Real-time Feedbacks are to control unit 18.Control unit 18 can change the flow of each system fluid according to the needs of cooling effect, then controlled the temperature of each fluid by heat exchange, thus controls the collection of the water yield in flue gas.Automatically the start and stop of draining pump 1 are controlled according to the feedback signal control unit 18 of the liquid level gauge 3 of water tank 2.Whole system realizes automation, intelligent operation.
Embodiment 2,
When adopting water as cooling medium, at chimney underflue built with cooling coil 4, cooling coil 4 is the making of corrosion resistant metal pipe, and cooling water enters from cooling water inlet, in cooling coil 4 internal flow, flows out from coolant outlet with after flue gas heat exchange.In order to better heat transfer effect, expanded joint fin outside cooling coil 4, fin material is identical with cooling coil 4 material.The water that cooling water after heat exchange provides in cooling medium system 17 carries out heat exchange, thus regains low temperature, and the effect through cooling water pump 15 again enters cooling coil and recycled.Flue-gas temperature after cooled reduces, saturation degree is corresponding reduction also, have a large amount of steam and be condensed into little water droplet, process through demister 6, liquid little water droplet is blocked, and collects in the water-collecting tray 5 below demister 6, and water-collecting tray 5 has adapter to lead to chimney outside to water tank 2, water tank is connected to draining pump 1, the water reclaimed can be delivered to field of employment.In order to the structure reaching better cooling effect demister 6 is improved on the basis of existing demister, demister 6 is made hollow structure by the present invention, inside can be used for cooling water to circulate, and being arranged in parallel with cooling coil 4 of demister 6, forms smoke heat exchanging system jointly.When equipment runs, flue gas enters chimney place and installs temperature transmitter 10, go out chimney place and flue gas analysis system 8 is installed, cooling medium system 17 installs temperature transmitter 10, pressure transmitter 14 on pipeline, water tank 2 is installed liquid level gauge 3, above all instrument signal Real-time Feedbacks are to control unit 18.Control unit 18 can change the flow of each system fluid according to the needs of cooling effect, then controlled the temperature of each fluid by heat exchange, thus controls the collection of the water yield in flue gas.Automatically the start and stop of draining pump 1 are controlled according to the feedback signal control unit 18 of the liquid level gauge 3 of water tank 2.Whole system realizes automation, intelligent operation.
Although the present invention with preferred embodiment openly as above; but they are not of the present invention for limiting; anyly have the knack of this those skilled in the art; without departing from the spirit and scope of the invention; can make various changes or retouch from working as, what therefore protection scope of the present invention should define with the claims of the application is as the criterion.
Claims (6)
1. a fume-dehydrating system, comprise water tank (2), cooling coil (4), water-collecting tray (5), demister (6), chimney (7), cooling medium system (17), it is characterized in that: cooling coil (4) is arranged in the flue of chimney (7) bottom, demister (6) is arranged on above chimney, water-collecting tray (5) is positioned at demister (6) below, water-collecting tray (6) is connected with the water tank (2) of chimney outside by adapter, import and the outlet of cooling coil (4) are all connected to cooling medium system (17), import and the cooling medium system (17) of cooling coil (4) arrange cooling water pump (15), cooling medium is circulated in cooling coil (4) and cooling medium system (17).
2. fume-dehydrating system as claimed in claim 1, is characterized in that: described cooling medium is water or refrigerant.
3. fume-dehydrating system as claimed in claim 1, is characterized in that: described cooling coil (4) outside expanded joint fin, fin material is identical with cooling coil (4) material.
4. fume-dehydrating system as claimed in claim 1, is characterized in that: be provided with draining pump (1) and connect described water tank (2), the water reclaimed is delivered to field of employment.
5. the fume-dehydrating system as described in claim as arbitrary in claim 1-4, it is characterized in that: described demister (6) is hollow structure, inside can be used for cooling water to circulate, and being arranged in parallel with described cooling coil (4) of described demister (6), forms smoke heat exchanging system jointly.
6. the fume-dehydrating system as described in claim as arbitrary in claim 1-4, it is characterized in that: flue gas enters chimney place and installs temperature transmitter (10), go out chimney place and flue gas analysis system (8) is installed, cooling medium system (17) installs temperature transmitter (10), pressure transmitter (14) on pipeline, water tank (2) is installed liquid level gauge (3), above all instrument signal Real-time Feedbacks are to control unit (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407436.7A CN104984560A (en) | 2015-07-13 | 2015-07-13 | Flue gas dewatering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407436.7A CN104984560A (en) | 2015-07-13 | 2015-07-13 | Flue gas dewatering system |
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| CN104984560A true CN104984560A (en) | 2015-10-21 |
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| CN201510407436.7A Pending CN104984560A (en) | 2015-07-13 | 2015-07-13 | Flue gas dewatering system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370034A (en) * | 2016-08-30 | 2017-02-01 | 哈尔滨锅炉厂有限责任公司 | Flue gas heat exchange system for urea pyrolysis |
| CN112361366A (en) * | 2020-11-03 | 2021-02-12 | 自然资源部第一海洋研究所 | Novel anticorrosive chimney of making an uproar that falls for boats and ships |
| CN112377939A (en) * | 2020-11-03 | 2021-02-19 | 自然资源部第一海洋研究所 | Scientific investigation ship with anticorrosive chimney that makes an uproar that falls |
| CN112499649A (en) * | 2020-12-24 | 2021-03-16 | 昆山市三维换热器有限公司 | Urea hydrolysis ammonia dehydration system and method thereof |
Citations (6)
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| FR2692808A1 (en) * | 1992-06-25 | 1993-12-31 | Omarouayache Nourreddine | Industrial fumes anti-pollution system - uses gas jets to burn fumes and create steam at same time, to collect pollutants and drain them off in condensate. |
| CN201161995Y (en) * | 2007-11-08 | 2008-12-10 | 杨明得 | Large-scale stalk charing kiln |
| KR20100044738A (en) * | 2010-02-28 | 2010-04-30 | (주)이노씨엔이 | The cooling system using rankine cycle for the exhaust gas in the chimney |
| CN202869322U (en) * | 2012-08-12 | 2013-04-10 | 江苏全能环保科技有限公司 | Chimney with heat energy recovery device |
| CN203017796U (en) * | 2013-01-09 | 2013-06-26 | 永清环保股份有限公司 | Dehumidifying defogging device of moisture in condensed smoke |
| CN204910845U (en) * | 2015-07-13 | 2015-12-30 | 南通亚泰工程技术有限公司 | Flue gas dewatering system |
-
2015
- 2015-07-13 CN CN201510407436.7A patent/CN104984560A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2692808A1 (en) * | 1992-06-25 | 1993-12-31 | Omarouayache Nourreddine | Industrial fumes anti-pollution system - uses gas jets to burn fumes and create steam at same time, to collect pollutants and drain them off in condensate. |
| CN201161995Y (en) * | 2007-11-08 | 2008-12-10 | 杨明得 | Large-scale stalk charing kiln |
| KR20100044738A (en) * | 2010-02-28 | 2010-04-30 | (주)이노씨엔이 | The cooling system using rankine cycle for the exhaust gas in the chimney |
| CN202869322U (en) * | 2012-08-12 | 2013-04-10 | 江苏全能环保科技有限公司 | Chimney with heat energy recovery device |
| CN203017796U (en) * | 2013-01-09 | 2013-06-26 | 永清环保股份有限公司 | Dehumidifying defogging device of moisture in condensed smoke |
| CN204910845U (en) * | 2015-07-13 | 2015-12-30 | 南通亚泰工程技术有限公司 | Flue gas dewatering system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370034A (en) * | 2016-08-30 | 2017-02-01 | 哈尔滨锅炉厂有限责任公司 | Flue gas heat exchange system for urea pyrolysis |
| CN112361366A (en) * | 2020-11-03 | 2021-02-12 | 自然资源部第一海洋研究所 | Novel anticorrosive chimney of making an uproar that falls for boats and ships |
| CN112377939A (en) * | 2020-11-03 | 2021-02-19 | 自然资源部第一海洋研究所 | Scientific investigation ship with anticorrosive chimney that makes an uproar that falls |
| CN112499649A (en) * | 2020-12-24 | 2021-03-16 | 昆山市三维换热器有限公司 | Urea hydrolysis ammonia dehydration system and method thereof |
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Application publication date: 20151021 |