CN211328808U - Negative pressure flue gas purification device of thermal power plant - Google Patents
Negative pressure flue gas purification device of thermal power plant Download PDFInfo
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- CN211328808U CN211328808U CN201921237926.7U CN201921237926U CN211328808U CN 211328808 U CN211328808 U CN 211328808U CN 201921237926 U CN201921237926 U CN 201921237926U CN 211328808 U CN211328808 U CN 211328808U
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Abstract
The utility model discloses a negative pressure flue gas purification device of steam power plant, include: one-level purifier, second grade purifier or multistage purifier to and install the online gas detection device at flue gas pipeline, one-level purifier carries out the first purification with the flue gas, and the flue gas after the first purification gets into second grade purifier, carries out the secondary purification, and the flue gas after secondary purification or multistage purification finally will detect qualified flue gas and discharge into among the atmosphere behind high negative pressure air fan. The utility model adopts a negative pressure flue gas purification method, and an online gas detection device arranged on a flue gas pipeline can detect the content of components of flue gas in real time and provide control data for a purification process; put high negative pressure ventilation blower behind second grade purifier, greatly reduced high negative pressure fan and flue gas contact's probability, can not only prolong high negative pressure fan's life, can do further purification to the flue gas moreover, can play better purifying effect.
Description
Technical Field
The utility model relates to a flue gas purification handles technical field, and more specifically the utility model relates to a negative pressure flue gas purification device of steam power plant that says so.
Background
The waste gas of the thermal power plant mainly comes from flue gas generated by boiler combustion, dust-containing waste gas generated by the exhaust of an intermediate ash storage of a pneumatic ash conveying system and a coal yard, and coal dust generated by coal yard, raw coal crushing and electric coal conveying. The amount of flue gas generated by boiler combustion and the pollutant discharge amount contained in the flue gas are far greater than those of other waste gases, so that the purification of the flue gas is the key point of pollution control.
The pollutants in the flue gas generated by boiler combustion include fly ash and SO2、NOX、CO2Small amounts of fluoride and chloride. Their ratio depends on the mineral composition of the coal, and the main pollutants are fly ash, coal dust, SO2And NOX. However, various flue gas purification devices are mainly adopted for treating the boiler smoke dust in the thermal power plant, but the treatment efficiency is low, the treatment effect is poor, the waste gas cannot be thoroughly treated, and the environment is polluted.
Therefore, how to develop a negative pressure flue gas purification device for a thermal power plant is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a negative pressure flue gas purification device of steam power plant.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a negative pressure flue gas purification device of steam power plant, one-level purifier and second grade purifier, one-level purifier with second grade purifier links to each other, high negative pressure fan is connected to secondary purifier.
The beneficial effect of adopting above-mentioned technical scheme is: the utility model adopts the negative pressure flue gas purification method, the high negative pressure ventilator is arranged behind the secondary purification device, the contact probability of the high negative pressure fan and the flue gas is greatly reduced, the service life of the high negative pressure fan can be prolonged, the flue gas can be further purified, and a better purification effect can be achieved; just the utility model discloses a one-level purifier and second grade purifier enable to purify more fully, make the utility model discloses environmental protection more.
Preferably, the primary purification device comprises a primary absorption tower, an air inlet pipe, a primary dosing pipe and an online gas detection device;
the one-level absorption tower is filled with the medicine solution that is used for purifying the flue gas, medicine solution by the one-level adds the pencil and adds one-level absorption tower, the flue gas that needs to be handled passes through in the intake pipe gets into one-level absorption tower, just the shower nozzle of intake pipe export is porous loudspeaker form and stretches into below the medicine solution liquid level, through the flue gas through fully contacting with medicine solution and carry out the first time purification after physics, the chemical reaction.
The beneficial effect of adopting above-mentioned technical scheme is: the shower nozzle of intake pipe export is porous loudspeaker form, can be better with the flue gas diffusion to the absorption tower of needs handling, and this shower nozzle stretches into below the medicine solution liquid level, enables flue gas and medicine solution reaction degree higher, increases purifying effect.
Preferably, the negative pressure flue gas purification device of the thermal power plant further comprises a gas pipe, and the gas pipe sends the flue gas after primary purification into the secondary purification device.
Preferably, the secondary purification device comprises a secondary absorption tower, a gas pipe, a secondary dosing pipe, an exhaust pipe and an online gas detection device; and the secondary medicine feeding pipe is used for feeding medicine solution into the secondary absorption tower.
Preferably, the nozzle at the outlet of the gas transmission pipe is in a porous trumpet shape and extends below the liquid level of the medicine solution.
Preferably, the secondary purification device further comprises an exhaust pipe, the exhaust pipe is connected with the high negative pressure fan, and the high negative pressure fan is arranged at the pipe orifice of the exhaust pipe.
Preferably, the bottoms of the primary absorption tower and the secondary absorption tower are funnel-shaped.
Preferably, the bottoms of the primary absorption tower and the secondary absorption tower are both provided with a drain pipe, and a drain valve is arranged on the drain pipe.
Preferably, the outlet of the air inlet pipe and the outlet of the air conveying pipe further comprise a shower type spray head.
It should be noted that the nozzles of the air inlet pipe and the air delivery pipe can be shower nozzles besides porous trumpet-shaped nozzles, the shower nozzles are provided with a plurality of air outlets, and the flue gas is sprayed out from the shower nozzles to increase the reaction area of the flue gas and the medicine solution, so that the efficiency of absorbing the flue gas by the medicine solution is improved better, the reaction between the flue gas and the medicine solution is more complete, and the purpose of deeply purifying the flue gas is achieved.
The utility model discloses can also set up multistage purifier.
According to the above technical scheme, compare with prior art, the utility model discloses a negative pressure flue gas purification device of steam power plant, the utility model discloses a multistage purification's mode guarantees flue gas purification device's purifying effect, just the utility model discloses a method of negative pressure dust removal gets into purifier under the effect of high negative pressure fan high negative pressure, and smoke and dust and water-soluble harmful substance in the flue gas break away from in a large number from the flue gas, reach the effect of purifying flue gas, have effectively reduced the probability that the gas that steam power plant discharged can the contaminated air, and is energy-concerving and environment-protective, just the utility model discloses simple structure, it is very convenient to install.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment 1 of a negative pressure flue gas purification device of a thermal power plant of the present invention;
101-a first-stage absorption tower, 102-an air inlet pipe, 103-a first-stage dosing pipe, 201-a second-stage absorption tower, 202-an air conveying pipe, 203-a second-stage dosing pipe, 204-a high negative pressure fan, 303-an air exhaust pipe, 4-a spray head, 501-a sewage discharge pipe, 502-a sewage discharge valve and 503-a gas detection device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment discloses a negative pressure flue gas purification device of a thermal power plant, which adopts a negative pressure flue gas purification method, and the negative pressure flue gas purification device of the thermal power plant includes: one-level purifier and second grade purifier, one-level purifier carry out the primary purification with the flue gas, and the flue gas after the primary purification gets into second grade purifier, carries out the secondary purification, and the flue gas after the secondary purification finally is discharged into among the atmosphere with the flue gas after purifying behind high negative pressure fan 204.
Wherein, the primary purification device comprises a primary absorption tower 101, an air inlet pipe 102, a primary dosing pipe 103 and an online gas detection device 503; the first-stage absorption tower 101 is filled with a medicine solution for purifying smoke, the medicine solution is added into the first-stage absorption tower 101 through a first-stage medicine adding pipe 103, and the smoke to be treated enters the first-stage absorption tower 101 through an air inlet pipe 102;
the secondary device comprises a secondary absorption tower 201, a gas transmission pipe 202, a secondary dosing pipe 203, a high negative pressure fan 204, a gas exhaust pipe 303 and an online gas detection device 503; during second grade adds pencil 203 and adds the second grade absorption tower 201 with medicine solution, one-level purifier and second grade purifier are by gas-supply pipe 202 intercommunication, send into second grade purifier with the flue gas after once purifying, and the shower nozzle 4 of gas-supply pipe 202 export and the shower nozzle 4 of intake pipe 102 export all are porous loudspeaker form and stretch into below the medicine solution liquid level, carry out abundant physicochemical reaction to the flue gas through medicine solution, reach the purpose of once purifying and secondary purification.
In addition, secondary purification device still includes blast pipe 303, and blast pipe 303 links to each other with high negative pressure fan 204, and high negative pressure fan 204 locates the blast pipe 303 mouth of pipe.
Meanwhile, the bottoms of the first-stage absorption tower 101 and the second-stage absorption tower 201 are both funnel-shaped, and are both provided with a drain pipe 501, and a drain valve 502 is arranged on the drain pipe 501.
Example two:
the embodiment discloses a negative pressure flue gas purification device of a thermal power plant, which adopts a negative pressure flue gas purification method and comprises the following steps: one-level purifier and second grade purifier, one-level purifier carry out the primary purification with the flue gas, and the flue gas after the primary purification gets into second grade purifier, carries out the secondary purification, and the flue gas after the secondary purification finally discharges the flue gas into among the atmosphere after high negative pressure fan 204.
Wherein, the primary purification device comprises a primary absorption tower 101, an air inlet pipe 102, a primary dosing pipe 103 and an online gas detection device 503; the first-stage absorption tower 101 is filled with a medicine solution for purifying smoke, the medicine solution is added into the first-stage absorption tower 101 through a first-stage medicine adding pipe 103, and the smoke to be treated enters the first-stage absorption tower 101 through an air inlet pipe 102;
the secondary device comprises a secondary absorption tower 201, a gas transmission pipe 202, a secondary dosing pipe 203, a high negative pressure fan 204, a gas exhaust pipe 303 and an online gas detection device 503; during second grade adds pencil 203 and adds the second grade absorption tower 201 with medicine solution, one-level purifier and second grade purifier are by gas-supply pipe 202 intercommunication, send into second grade purifier with the flue gas after once purifying, and the shower nozzle 4 of gas-supply pipe 202 export and the shower nozzle 4 of intake pipe 102 export are gondola water faucet formula shower nozzle and stretch into below the medicine solution liquid level, carry out abundant physicochemical reaction through the medicine to the flue gas, reach the purpose of once purifying and secondary purification.
In addition, secondary purification device still includes blast pipe 303, and blast pipe 303 links to each other with high negative pressure fan 204, and high negative pressure fan 204 locates the blast pipe 303 mouth of pipe.
Meanwhile, the bottoms of the first-stage absorption tower 101 and the second-stage absorption tower 201 are both funnel-shaped, and are both provided with a drain pipe 501, and a drain valve 502 is arranged on the drain pipe 501.
It should be noted that the utility model discloses not only be limited to one-level purifier and second grade purifier, can design as required for multistage purifier.
The utility model discloses a theory of operation does:
the flue gas that needs to purify gets into one-level purifier, purifies once through corresponding medicine solution, and the flue gas after once purifying gets into second grade purifier, carries out secondary purification, and the gas after secondary purification is discharged into the atmosphere through high negative pressure fan gas process blast pipe.
The utility model discloses have high purifying effect, and simple structure, the installation of being convenient for can effectively help the thermal power plant to reduce the emission of the smoke and dust of taking the pollutant, has complied with the theory of current social energy saving and environmental protection, is worth promoting and drops into use.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a negative pressure gas cleaning device of steam power plant which characterized in that includes: the device comprises a primary purification device and a secondary purification device, wherein the primary purification device is connected with the secondary purification device, and the secondary purification device is connected with a high negative pressure fan (204);
the primary purification device comprises a primary absorption tower (101), an air inlet pipe (102) and a primary dosing pipe (103);
the one-level absorption tower (101) is filled with the medicine solution that is used for purifying the flue gas in, medicine solution by one-level dosing pipe (103) add one-level absorption tower (101), the flue gas that needs to be handled passes through intake pipe (102) get into in one-level absorption tower (101), just the shower nozzle of intake pipe (102) export is porous loudspeaker form and stretches into below the medicine solution liquid level, carries out once purification through medicine solution with the flue gas.
2. The negative-pressure flue gas purification device of the thermal power plant as claimed in claim 1, further comprising a gas pipe (202), wherein the gas pipe (202) sends the purified flue gas to the secondary purification device.
3. The negative pressure flue gas purification device of the thermal power plant as claimed in claim 1, wherein the secondary purification device comprises a secondary absorption tower (201) and a secondary dosing pipe (203); the secondary medicine feeding pipe (203) feeds medicine solution into the secondary absorption tower (201).
4. The negative-pressure flue gas purification device for thermal power plants as claimed in claim 1, further comprising an online gas detection device (503) installed in the flue gas pipeline.
5. The negative-pressure flue gas purification device of the thermal power plant as claimed in claim 2, wherein the nozzle at the outlet of the air inlet pipe (102) or the air delivery pipe (202) is in a shape of a porous horn and extends below the liquid level of the medicine solution.
6. The negative-pressure flue gas purification device for thermal power plants according to claim 1, wherein the secondary purification device further comprises an exhaust pipe (302), the exhaust pipe (302) is connected with the high negative-pressure air blower (204), and the high negative-pressure air blower (204) is arranged at the pipe orifice of the exhaust pipe (302).
7. The negative pressure flue gas purification device of the thermal power plant as claimed in claim 3, wherein the bottoms of the primary absorption tower (101) and the secondary absorption tower (201) are funnel-shaped.
8. The negative pressure flue gas purification device of the thermal power plant as claimed in claim 3, wherein the bottoms of the primary absorption tower (101) and the secondary absorption tower (201) are both provided with a drain pipe (501), and a drain valve (502) is arranged on the drain pipe (501).
9. The negative pressure flue gas purification device of the thermal power plant as claimed in claim 2, wherein the outlet of the air inlet pipe (102) and the outlet of the air delivery pipe (202) further comprise a shower nozzle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237926.7U CN211328808U (en) | 2019-07-30 | 2019-07-30 | Negative pressure flue gas purification device of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921237926.7U CN211328808U (en) | 2019-07-30 | 2019-07-30 | Negative pressure flue gas purification device of thermal power plant |
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| CN211328808U true CN211328808U (en) | 2020-08-25 |
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| CN201921237926.7U Active CN211328808U (en) | 2019-07-30 | 2019-07-30 | Negative pressure flue gas purification device of thermal power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041795A (en) * | 2021-03-11 | 2021-06-29 | 芜湖造船厂有限公司 | Gas absorption treatment device |
| CN113244756A (en) * | 2021-05-27 | 2021-08-13 | 威海宝源电气有限公司 | Negative pressure carbon emission reduction flue gas purification device of thermal power plant |
-
2019
- 2019-07-30 CN CN201921237926.7U patent/CN211328808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041795A (en) * | 2021-03-11 | 2021-06-29 | 芜湖造船厂有限公司 | Gas absorption treatment device |
| CN113244756A (en) * | 2021-05-27 | 2021-08-13 | 威海宝源电气有限公司 | Negative pressure carbon emission reduction flue gas purification device of thermal power plant |
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