CN2859247Y - Smoke gas resistance downwash device for wet chimney of flue gas desulfurizer - Google Patents
Smoke gas resistance downwash device for wet chimney of flue gas desulfurizer Download PDFInfo
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- CN2859247Y CN2859247Y CN 200520077832 CN200520077832U CN2859247Y CN 2859247 Y CN2859247 Y CN 2859247Y CN 200520077832 CN200520077832 CN 200520077832 CN 200520077832 U CN200520077832 U CN 200520077832U CN 2859247 Y CN2859247 Y CN 2859247Y
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- flue gas
- burner
- intelligent
- chimney
- gas
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Abstract
A smoke gas resistance downwash device for wet chimney of flue gas desulfurizer is used to prevent smoke gas downwash while operating wet chimney in flue gas desulfurizer device or increase rise height or vertical diffusion speed of low temperature smoke to reduce degree of contamination to the surroundings in similar areas. The device is composed of intelligent controller 2, intelligent fuel valve 3, draught fan 4, burner 5, fuel/gas transmitting pipeline 6 and air supply pipe 7. Two controlling ends of intelligent controller 2 are separately connected with intelligent fuel valve 3 and draught fan 4. The output end of intelligent fuel valve 3 is connected with burner 5 through fuel/gas transmitting pipeline 6. The output end of draught fan 4 is is connected with burner 5 through air supply pipe 7. Burner 5 lies in chimney 1. The rise height of smoke heated by the device is raised after passing by the chimney, thereby preventing smoke gas downwash.
Description
Technical field
The utility model relates to and a kind ofly is used for preventing when wet chimney operation is adopted in flue gas desulphurization system (FGD) device back washing under the flue gas (downwash) or similar field and is used to increase the rising height of low-temperature flue gas or vertical proliferation speed to reduce a set of equipment system of flue gas to the pollution level of neighboring area, belongs to the technical field of environmental protection equipment.
Background technology
The literal sense of washing is air-flow deflecting down with respect to the wing direction of motion down.For fired power generating unit, wash under the flue gas be meant when the chimney outlet flow velocity low excessively, under the inversion layer meteorological condition, air-flow is not to the floating diffusion of rising, but is diffused into ground on every side downwards.
After fired power generating unit adopts the FGD system, the flue-gas temperature step-down, humidity uprises, in order to prevent to wash under the flue gas, influence peripheral resident's life, so generally need increase flue gas reheat system (GGH),, promote flue-gas temperature thereby go up largely to improve the flue-gas temperature in exit at the desulphurization system afterbody, increase the discharging rising height, wash under guaranteeing not occur.But GGH is extra cost burden for the FGD system, investment cost height not only, and running resistance (power consumption) is also very high; And itself also face serious etching problem, and increased maintenance cost, workload greatly, reduced the reliability of FGD system, also be one of capital equipment that causes by the FGD disorderly closedown.That is to say, the consideration of the comprehensive method of investment, operation and maintenance cost, in most of the cases, wet flue gas emission scenary (without GGH) has minimum total cost.Therefore, the FGD device of the U.S. since the eighties in last century cancelled GGH mostly, and adopts the technology of wet chimney, and China is also proposing to adopt wet chimney to substitute the requirement of GGH in recent years.But, adopt the wet flue gas discharging, under certain outside meteorological condition, take place to wash phenomenon under the flue gas, this will weaken the diffusion of flue gas, and the resident's of surrounding area living environment is caused great influence.
Summary of the invention
Technical problem: the purpose of this utility model provides under the anti-flue gas of the wet chimney of a kind of flue gas desulfur device and washes system, and this plant investment is few, operating cost is low, makes wet chimney replace GGH to become possibility.
Technical scheme: because in most cases, the probability that occurs the meteorological condition of washing down in 1 year is that very little (concrete probability is different because of the residing meteorology of each fired power generating unit and geographical environment, can quantitative analysis estimate), and wash phenomenon under the flue gas when adopting wet chimney and only can occur at this moment.At these characteristics, the present invention has designed the system of washing under the flue gas of preventing, this system adopts the direct heat release of combustion oil/gas, and the heating low-temperature flue gas guarantees the temperature and the flow velocity of chimney outlet flue gas to stop the generation of washing phenomenon under the flue gas.This system layout is in wet chimney bottom, and is relatively independent with the FGD device.Install after the present invention, the FGD device can fully phase out GGH, reduces investment and operating cost greatly, increases the reliability of system.
Cleaning device is made up of intelligent controller, intelligent fuel valve, blower fan, burner, fuel oil/letter shoot road, air supply line under the anti-flue gas of the wet chimney of flue gas desulfur device of the present utility model; Two control ends of intelligent controller connect intelligent fuel valve, blower fan respectively, and the output of intelligent fuel valve joins by fuel oil/letter shoot road and burner, and the output of blower fan joins by air supply line and burner, and burner is arranged in chimney.Intelligent controller realized by an industrial computer, according to meteorology and geographical environment, the determining program of the critical operating mode of washing under the intelligent controller operation flue gas, under wash when being about to take place, send signal to intelligent fuel valve and blower fan.
Operation principle of the present utility model and process are: when system judges that meteorology reaches the criticality of washing under the flue gas, this system starts, flow and temperature according to flue gas, the intelligent controller of this invention is made rational judgement, and send signal to burner, flue gas is heated in fuel (fuel oil/gas) burning immediately.Flue gas after the heating is through behind the chimney, and rising height improves, and has avoided washing under the flue gas generation of phenomenon.
Beneficial effect: device 1. of the present utility model start and stop flexibly, easy and simple to handle, the investment far below the GGH of flue gas reheat system, can reduce resistance greatly, save power consumption, and security of operation, fault rate is low, maintenance cost is few, guarantees the long-term normal operation of wet chimney with less cost.2. the present invention adopts fuel oil/gas firing as thermal source, compare with steam-heating system, and the energy utilization rate height, system is simple, convenient.3. the device in flue, prevent that dust from stopping up, the wall corrosion all is the problem that heater should be considered, and this invention be can avoid use Steam Heating the time, stifled ash of surface heater and the problem of corroding.4. by optimal control, improve efficiency of combustion to this system; Can judge the critical point of washing under the flue gas according to the various places meteorological condition; Can be an intelligent apparatus system therefore according to the capacity of unit and the required fuel flow rate of temperature decision of flue gas.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model.Have among the figure: chimney 1, intelligent controller 2, intelligent fuel valve 3, blower fan 4, burner 5, fuel oil/letter shoot road 6, air supply line 7, combustion flame 8.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
When the FGD device selected wet chimney to move, at chimney outlet, owing to flue-gas temperature step-down, humidity uprise, flue gas vertical proliferation speed reduced, and atmosphere hoist height descends bigger, can take place to wash phenomenon under the plume.
Cleaning device is made up of intelligent controller 2, intelligent fuel 3, blower fan 4, burner 5, fuel oil/letter shoot road 6, air supply line 7 under the anti-flue gas of the wet chimney of flue gas desulfur device of the present utility model; Two control ends of intelligent controller 2 connect intelligent fuel valve 3, blower fan 4 respectively, the output of intelligent fuel valve 3 joins with burner 5 by fuel oil/letter shoot road 6, the output of blower fan 4 joins by air supply line 7 and burner 5, and burner 5 is arranged in chimney 1.Intelligent controller 2 realized by an industrial computer, according to meteorology and geographical environment, the determining program of the critical operating mode of washing under the intelligent controller 2 operation flue gases, under wash when being about to take place, send signal to intelligent fuel valve 3 and blower fan 4.
The system of washing is exactly little at the plume rise of wet smoke stack emission under the anti-flue gas of wet chimney of the present utility model, starts during the threat that is about to take place to wash down.At first be about to the critical condition that generation is washed down according to the meteorological condition of fired power generating unit region of living in and the physical parameter prediction of FGD system outlet flue gas, under this state, start this system by intelligent controller 2.Intelligent controller 2 obtains sending order to intelligent fuel valve 3 behind the signal, parameters such as wind speed according to the physical parameter and the chimney breast height of flue gas, the definite fuel quantity that will supply with, open the suitable valve aperture as required, under the control of this valve, fuel is delivered directly in the combustion system by fuel oil/letter shoot road 6.Simultaneously, intelligent controller 2 sends order to blower fan 4, and the based on fuel amount is given combustion system by air supply line 7 air feeds.Then, by the burner 5 of a performance optimization, fire fuel, fuel burns rapidly and release heat in chimney 1.This system layout is in the stronger position of flue gas turbulent flow, and like this, the heat that burning produces can discharge rapidly, the flue gas in the chimney is heated to surmount the critical condition of washing under the flue gas.The flow scheme design compactness of whole system, good effect of heat exchange.
The intelligent controller that the utility model relates to can be about to the critical condition that generation is washed down according to the meteorological condition of fired power generating unit region of living in and the physical parameter prediction of FGD system outlet flue gas; The intelligent fuel valve can be according to the parameters such as wind speed of the physical parameter and the chimney breast height of flue gas, determine the fuel quantity that will supply with, and open the suitable valve aperture as required; Burner can be reduced to minimum level to the influence of burning with air-flow in the flue, when because of extraneous bad working environments flame-out situation taking place, can rekindle rapidly.When not moving this system for a long time, burner has the ability that stronger opposing ash is stifled and corrode.
Claims (2)
1. cleaning device under the anti-flue gas of the wet chimney of flue gas desulfur device is characterized in that this device is made up of intelligent controller (2), intelligent fuel valve (3), blower fan (4), burner (5), fuel oil/letter shoot road (6), air supply line (7); Two control ends of intelligent controller (2) connect intelligent fuel valve (3), blower fan (4) respectively, the output of intelligent fuel valve (3) joins by fuel oil/letter shoot road (6) and burner (5), the output of blower fan (4) joins by air supply line (7) and burner (5), and burner (5) is arranged in chimney (1).
2. cleaning device under the anti-flue gas of the wet chimney of flue gas desulfur device according to claim 1, it is characterized in that intelligent controller (2) realized by an industrial computer, according to meteorology and geographical environment, the determining program of the critical operating mode of washing under intelligent controller (2) the operation flue gas, under wash when being about to take place, send signal to intelligent fuel valve (3) and blower fan (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077832 CN2859247Y (en) | 2005-11-23 | 2005-11-23 | Smoke gas resistance downwash device for wet chimney of flue gas desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077832 CN2859247Y (en) | 2005-11-23 | 2005-11-23 | Smoke gas resistance downwash device for wet chimney of flue gas desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859247Y true CN2859247Y (en) | 2007-01-17 |
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ID=37612106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520077832 Expired - Lifetime CN2859247Y (en) | 2005-11-23 | 2005-11-23 | Smoke gas resistance downwash device for wet chimney of flue gas desulfurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859247Y (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 |
| CN109899784A (en) * | 2019-03-06 | 2019-06-18 | 北京神科博斯热能工程技术有限公司 | A kind of coke oven gas burner |
-
2005
- 2005-11-23 CN CN 200520077832 patent/CN2859247Y/en not_active Expired - Lifetime
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 |
| CN109899784A (en) * | 2019-03-06 | 2019-06-18 | 北京神科博斯热能工程技术有限公司 | A kind of coke oven gas burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090819 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |