CN113750772A - Energy-saving system applied to oxidation fan and operation method thereof - Google Patents
Energy-saving system applied to oxidation fan and operation method thereof Download PDFInfo
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- CN113750772A CN113750772A CN202110926228.3A CN202110926228A CN113750772A CN 113750772 A CN113750772 A CN 113750772A CN 202110926228 A CN202110926228 A CN 202110926228A CN 113750772 A CN113750772 A CN 113750772A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention discloses an energy-saving system applied to an oxidation fan and an operation method thereof, wherein the energy-saving system comprises a first fan, a second fan, a first pipeline, a second pipeline, a third pipeline, an absorption tower and a control valve, the absorption tower comprises a first absorption tower and a second absorption tower, two ends of the first pipeline are respectively communicated with the first fan and the first absorption tower, two ends of the second pipeline are respectively communicated with the second fan and the second absorption tower, and two ends of the third pipeline are respectively communicated with the first pipeline and the second pipeline; the control valve comprises a first valve, a second valve and a third valve, and the first valve, the second valve and the third valve are respectively arranged on the first pipeline, the second pipeline and the third pipeline. The technical effects achieved are as follows: under the condition that a fan can provide sufficient oxidizing air, the whole system only needs to open a fan, energy consumption can be effectively saved, flue gas treatment cost is reduced, and meanwhile, the whole system is simple to operate and convenient to use.
Description
Technical Field
The invention relates to the technical field of flue gas oxidation desulfurization, in particular to an energy-saving system applied to an oxidation fan and an operation method of the energy-saving system applied to the oxidation fan.
Background
The oxidation fan in the wet desulphurization is used for forcibly changing calcium sulfite into gypsum through oxidation wind, and the air volume is designed according to the full flue gas volume and the full sulfur content because the Roots oxidation fan is in a constant pressure and constant flow form, but the running time of the existing unit under the full flue gas volume and the full sulfur content is basically not existed, and the annual load factor is not more than 55%. The Roots oxidation blower adopted in the actual production process is 6000V equipment, the air volume cannot be adjusted and the Roots oxidation blower runs at full capacity all the time, and the energy waste is serious.
Disclosure of Invention
Therefore, the invention provides an energy-saving system applied to an oxidation fan and an operation method thereof, and aims to solve the problem of serious energy waste of the oxidation fan in the oxidation desulfurization process in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the first aspect of the invention, the energy-saving system applied to the oxidation fan comprises a first fan, a second fan, a first pipeline, a second pipeline, a third pipeline, an absorption tower and a control valve, wherein the absorption tower comprises a first absorption tower and a second absorption tower, two ends of the first pipeline are respectively communicated with the first fan and the first absorption tower, two ends of the second pipeline are respectively communicated with the second fan and the second absorption tower, and two ends of the third pipeline are respectively communicated with the first pipeline and the second pipeline; the control valve comprises a first valve, a second valve and a third valve, and the first valve, the second valve and the third valve are respectively arranged on the first pipeline, the second pipeline and the third pipeline.
The first valve, the second valve, the third valve, the first fan and the second fan are all connected with the controller, and the controller is used for controlling the opening and closing of the first valve, the second valve, the third valve, the first fan and the second fan.
Further, the absorption tower comprises an inlet flue gas volume detector and an inlet sulfur detector, wherein the inlet flue gas volume detector and the inlet sulfur detector are both installed at a flue gas inlet of the absorption tower, and are both connected with the controller.
Further, the first fan and the second fan are both roots fans.
Further, the inside defroster, the layer and the thick liquid pond of spraying that are equipped with in proper order from top to bottom of absorption tower, it is equipped with spray piping to spray the layer, the last a plurality of nozzles that are equipped with of spray piping.
The absorption tower further comprises a smoke inlet pipeline and a smoke exhaust pipeline, the smoke inlet pipeline is communicated with the absorption tower, the smoke inlet pipeline is arranged below the spraying layer, and the smoke exhaust pipeline is communicated with the top of the absorption tower.
Further, the first valve, the second valve and the third valve are all electrically operated valves.
The invention has the following advantages: through setting up third pipeline and third valve, combine first pipeline, second pipeline, first valve and second valve to use, under a fan can provide sufficient oxidizing air's the condition, entire system only need open a fan, just can provide sufficient oxidizing air for first absorption tower and second absorption tower simultaneously, can effectively practice thrift the energy consumption, reduce the flue gas treatment cost, entire system easy operation simultaneously, it is convenient to use.
According to a second aspect of the invention, an operation method of an energy-saving system applied to an oxidation fan comprises the following steps:
step S100, calculating the oxidation air demand of the first absorption tower and the second absorption tower, judging whether one fan can meet the requirement, if so, executing step S200, otherwise, executing step S300;
step S200, opening a first fan, a first valve and a third valve, and closing a second fan and a second valve; or the second fan, the second valve and the third valve are opened, and the first fan and the first valve are closed;
and step S300, opening the first fan, the second fan, the first valve and the second valve, and closing the third valve.
Further, in the step S100, whether the requirement is met by operating one fan is determined by calculating a1 value and a2 value, where a1 is (inlet sulfur of the first absorption tower/design sulfur of the first absorption tower) x (inlet flue gas content of the first absorption tower/design flue gas content of the first absorption tower), a2 is (inlet sulfur of the second absorption tower/design sulfur of the second absorption tower) x (inlet flue gas content of the second absorption tower/design flue gas content of the second absorption tower), if both the a1 value and the a2 value are less than 0.5, the requirement is met, and otherwise, the requirement is not met.
Further, the a1 value and the a2 value in the step S100 are both obtained by automatic calculation through a controller, and the opening and closing of the first fan, the second fan, the first valve, the second valve and the third valve in the steps S200 and S300 are all automatically controlled through the controller.
The invention has the following advantages: the operation method is simple, the operation control is convenient and quick, the operation mode can be flexibly selected according to the actual demand of the oxidizing air, the energy consumption can be effectively saved, and the flue gas treatment cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic structural diagram of an energy saving system applied to an oxidation blower according to some embodiments of the present invention.
In the figure: 1. the device comprises a first fan, a second fan, a first pipeline, a second pipeline, a third pipeline, a first valve, a second valve, a third valve, a controller, a first absorption tower, a second absorption tower and a third absorption tower, wherein the first fan is 2, the second fan is 3, the first pipeline is 4, the second pipeline is 5, the third pipeline is 6, the first valve is 7, the second valve is 8, the third valve is 9, the controller is 10, the first absorption tower is 11, and the second absorption tower is 10.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an energy saving system applied to an oxidation fan and an operation method thereof in an embodiment of a first aspect of the present invention include a first fan 1, a second fan 2, a first pipeline 3, a second pipeline 4, a third pipeline 5, an absorption tower and a control valve, where the absorption tower includes a first absorption tower 10 and a second absorption tower 11, two ends of the first pipeline 3 are respectively communicated with the first fan 1 and the first absorption tower 10, two ends of the second pipeline 4 are respectively communicated with the second fan 2 and the second absorption tower 11, and two ends of the third pipeline 5 are respectively communicated with the first pipeline 3 and the second pipeline 4; the control valve includes a first valve 6, a second valve 7, and a third valve 8, and the first valve 6, the second valve 7, and the third valve 8 are installed on the first pipe 3, the second pipe 4, and the third pipe 5, respectively.
In the above embodiment, it should be noted that the first valve 6 is installed at one end of the first pipeline 3 close to the first fan 1, and the second valve 7 is installed at one end of the second pipeline 4 close to the second fan 2; the control valve adopts a manual valve or an electric valve, the first valve 6 is used for controlling the communication and the closing of the air outlet of the first fan 1 and the first absorption tower 10, the second valve 7 is used for controlling the communication and the closing of the air outlet of the second fan 2 and the second absorption tower 11, and the third valve 8 is used for controlling the communication and the closing of the first pipeline 3 and the second pipeline 4.
Further, under the condition that one fan can provide sufficient oxidizing air for the two absorption towers, the first fan 1, the first valve 6 and the third valve 8 are opened, and the second fan 2 and the second valve 7 are closed; alternatively, the second fan 2, the second valve 7 and the third valve 8 are opened, and the first valve 1 and the first valve 6 are closed.
The technical effects achieved by the above embodiment are as follows: through setting up third pipeline 5 and third valve 8, combine first pipeline 3, second pipeline 4, first valve 6 and second valve 7 to use, under the condition that a fan can provide sufficient oxidizing air, entire system only need open a fan, just can provide sufficient oxidizing air for first absorption tower 10 and second absorption tower 11 simultaneously, can effectively practice thrift the energy consumption, reduce the flue gas treatment cost, entire system easy operation simultaneously, it is convenient to use.
Optionally, as shown in fig. 1, in some embodiments, a controller 9 is further included, the first valve 6, the second valve 7, the third valve 8, the first fan 1, and the second fan 2 are all connected to the controller 9, and the controller 9 is configured to control opening and closing of the first valve 6, the second valve 7, the third valve 8, the first fan 1, and the second fan 2.
In the above alternative embodiment, it should be noted that the first valve 6, the second valve 7 and the third valve 8 are all electric valves.
The beneficial effects of the above alternative embodiment are: first valve 6, second valve 7, third valve 8, first fan 1 and second fan 2 all are connected with controller 9, can accomplish opening and closing of each equipment through controller 9, and it is more convenient to operate.
Optionally, as shown in fig. 1, in some embodiments, the flue gas absorption tower further includes an inlet flue gas quantity detector and an inlet sulfur detector, both of which are installed at the flue gas inlet of the absorption tower, and both of which are connected to the controller 9.
In the above optional embodiment, it should be noted that the inlet flue gas amount detector and the inlet sulfur content detector detect the flue gas amount and the sulfur content at the flue gas inlet of the absorption tower, and transmit the detection data to the controller 9, and the controller 9 performs calculation according to the detection data, thereby determining the operation mode of the whole system.
The beneficial effects of the above alternative embodiment are: through setting up entry flue gas volume detector and entry sulphur detector, can detect flue gas volume and sulphur of the flue gas import department of absorption tower.
Alternatively, as shown in fig. 1, in some embodiments, the first fan 1 and the second fan 2 are both roots fans.
The beneficial effects of the above alternative embodiment are: the first fan 1 and the second fan 2 are roots fans, the fans are small in vibration and low in noise, the impeller and the shaft are of an integral structure, the impeller is not abraded, the performance of the fans is lasting, and the fans can continuously run for a long time.
Optionally, as shown in fig. 1, in some embodiments, a demister, a spraying layer and a slurry tank are sequentially disposed inside the absorption tower from top to bottom, the spraying layer is provided with a spraying pipeline, and the spraying pipeline is provided with a plurality of nozzles.
In the above alternative embodiment, it should be noted that the absorption tower adopts a wet desulphurization process.
The beneficial effects of the above alternative embodiment are: the absorption tower adopts a wet desulphurization process, so that the desulphurization efficiency is high, the equipment operation rate is high, and the flue gas treatment capacity is large.
Optionally, as shown in fig. 1, in some embodiments, the system further includes a smoke inlet pipe and a smoke exhaust pipe, the smoke inlet pipe is communicated with the absorption tower, the smoke inlet pipe is disposed below the spray layer, and the smoke exhaust pipe is communicated with the top of the absorption tower.
In the above-mentioned alternative embodiment, it should be noted that the smoke inlet pipeline is made of a high-temperature resistant and corrosion resistant material.
The beneficial effects of the above alternative embodiment are: the smoke inlet pipeline is arranged below the spraying layer, and the smoke moves from bottom to top after entering the absorption tower and passes through the spraying layer, so that the sulfur and dust in the smoke can be fully removed.
As shown in fig. 1, in an embodiment of the second aspect of the present invention, an operation method of an energy saving system applied to an oxidation blower includes the following steps:
step S100, calculating the oxidation air demand of the first absorption tower 10 and the second absorption tower 11, judging whether one fan can meet the requirement, if so, executing step S200, otherwise, executing step S300;
step S200, opening the first fan 1, the first valve 6 and the third valve 8, and closing the second fan 2 and the second valve 7; or, the second fan 2, the second valve 7 and the third valve 8 are opened, and the first fan 1 and the first valve 6 are closed;
and step S300, opening the first fan 1, the second fan 2, the first valve 6 and the second valve 7, and closing the third valve 8.
In the above embodiment, it should be noted that, in step S100, whether the requirement is met by operating one fan is determined by calculating a1 value and a2 value, where a1 is (inlet sulfur of first absorption tower/design sulfur of first absorption tower) × (inlet flue gas content of first absorption tower/design flue gas content of first absorption tower), a2 is (inlet sulfur of second absorption tower/design sulfur of second absorption tower) × (inlet flue gas content of second absorption tower/design flue gas content of second absorption tower), if both a1 value and a2 value are less than 0.5, the requirement is met, and otherwise, the requirement is not met.
Further, the a1 value and the a2 value in the step S100 are automatically calculated by the controller 9, and the opening and closing of the first fan 1, the second fan 2, the first valve 6, the second valve 7 and the third valve 8 in the steps S200 and S300 are automatically controlled by the controller 9.
Further, step S100 is an operation mode of the whole system in the energy saving mode, the operation current of one fan in the prior art is about 40A, and the operation consumes about 280 ten thousand degrees of electric energy per year, so that the electric energy consumption can be greatly reduced by adopting the operation in the energy saving mode.
The technical effects achieved by the above embodiment are as follows: the operation method is simple, the operation control is convenient and quick, the operation mode can be flexibly selected according to the actual demand of the oxidizing air, the whole system can realize automatic control, the energy consumption can be effectively saved, and the flue gas treatment cost can be reduced.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (10)
1. The energy-saving system applied to the oxidation fan is characterized by comprising a first fan (1), a second fan (2), a first pipeline (3), a second pipeline (4), a third pipeline (5), an absorption tower and a control valve, wherein the absorption tower comprises a first absorption tower (10) and a second absorption tower (11), two ends of the first pipeline (3) are respectively communicated with the first fan (1) and the first absorption tower (10), two ends of the second pipeline (4) are respectively communicated with the second fan (2) and the second absorption tower (11), and two ends of the third pipeline (5) are respectively communicated with the first pipeline (3) and the second pipeline (4); the control valve comprises a first valve (6), a second valve (7) and a third valve (8), wherein the first valve (6), the second valve (7) and the third valve (8) are respectively arranged on the first pipeline (3), the second pipeline (4) and the third pipeline (5).
2. The energy-saving system applied to the oxidation fan is characterized by further comprising a controller (9), wherein the first valve (6), the second valve (7), the third valve (8), the first fan (1) and the second fan (2) are all connected with the controller (9), and the controller (9) is used for controlling the opening and closing of the first valve (6), the second valve (7), the third valve (8), the first fan (1) and the second fan (2).
3. The energy-saving system applied to the oxidation fan is characterized by further comprising an inlet flue gas quantity detector and an inlet sulfur detector, wherein the inlet flue gas quantity detector and the inlet sulfur detector are both installed at a flue gas inlet of the absorption tower, and are both connected with the controller (9).
4. An energy saving system applied to an oxidation fan as set forth in claim 1, characterized in that the first fan (1) and the second fan (2) are roots fans.
5. The energy-saving system applied to the oxidation fan as claimed in claim 1, wherein a demister, a spraying layer and a slurry tank are sequentially arranged inside the absorption tower from top to bottom, the spraying layer is provided with a spraying pipeline, and the spraying pipeline is provided with a plurality of nozzles.
6. The energy-saving system applied to the oxidation fan as claimed in claim 5, further comprising a smoke inlet pipeline and a smoke exhaust pipeline, wherein the smoke inlet pipeline is communicated with the absorption tower, the smoke inlet pipeline is arranged below the spraying layer, and the smoke exhaust pipeline is communicated with the top of the absorption tower.
7. The energy-saving system applied to the oxidation air blower is characterized in that the first valve (6), the second valve (7) and the third valve (8) are all electrically operated valves.
8. The operation method of the energy-saving system applied to the oxidation fan is characterized by comprising the following steps of:
step S100, calculating the oxidation air demand of a first absorption tower (10) and a second absorption tower (11), judging whether one fan can meet the requirement, if so, executing step S200, otherwise, executing step S300;
s200, opening a first fan (1), a first valve (6) and a third valve (8), and closing a second fan (2) and a second valve (7); or the second fan (2), the second valve (7) and the third valve (8) are opened, and the first fan (1) and the first valve (6) are closed;
and S300, opening the first fan (1), the second fan (2), the first valve (6) and the second valve (7), and closing the third valve (8).
9. The method of claim 8, wherein the step S100 of determining whether the operation of one fan meets the requirement is performed by calculating a1 value and a2 value, where a1 is (inlet sulfur of the first absorption tower/design sulfur of the first absorption tower) x (inlet flue gas content of the first absorption tower/design flue gas content of the first absorption tower), a2 is (inlet sulfur of the second absorption tower/design sulfur of the second absorption tower) x (inlet flue gas content of the second absorption tower/design flue gas content of the second absorption tower), and if both a1 value and a2 value are less than 0.5, the requirement is met, otherwise, the requirement is not met.
10. The method for operating an energy-saving system applied to an oxidation fan as claimed in claim 8, wherein the value A1 and the value A2 in the step S100 are automatically calculated by a controller (9), and the opening and closing of the first fan (1), the second fan (2), the first valve (6), the second valve (7) and the third valve (8) in the steps S200 and S300 are automatically controlled by the controller (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110926228.3A CN113750772A (en) | 2021-08-12 | 2021-08-12 | Energy-saving system applied to oxidation fan and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110926228.3A CN113750772A (en) | 2021-08-12 | 2021-08-12 | Energy-saving system applied to oxidation fan and operation method thereof |
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| JP2003305328A (en) * | 2001-11-02 | 2003-10-28 | Jfe Engineering Kk | Desulfurization equipment for digestion gas and desulfurization method |
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| CN211098396U (en) * | 2019-11-12 | 2020-07-28 | 北京国电龙源环保工程有限公司 | Desulfurization oxidation air supply device and oxidation air volume dynamic control system |
| CN212819085U (en) * | 2020-04-30 | 2021-03-30 | 中电华创电力技术研究有限公司 | Desulfurization oxidation wind centralized control system |
| CN113217443A (en) * | 2020-03-18 | 2021-08-06 | 大唐环境产业集团股份有限公司 | Main pipe energy-saving device and method of centrifugal desulfurization oxidation fan |
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2021
- 2021-08-12 CN CN202110926228.3A patent/CN113750772A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003305328A (en) * | 2001-11-02 | 2003-10-28 | Jfe Engineering Kk | Desulfurization equipment for digestion gas and desulfurization method |
| CN106000066A (en) * | 2016-07-01 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Absorbing tower with air introducing device |
| CN208482253U (en) * | 2018-06-29 | 2019-02-12 | 安徽科力德电力科技有限公司 | A kind of two furnaces, two tower desulfurization oxidation wind system central control device |
| CN209438368U (en) * | 2018-11-30 | 2019-09-27 | 苏州仕净环保科技股份有限公司 | Wet desulphurization aoxidizes wind system |
| CN211098396U (en) * | 2019-11-12 | 2020-07-28 | 北京国电龙源环保工程有限公司 | Desulfurization oxidation air supply device and oxidation air volume dynamic control system |
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Application publication date: 20211207 |