CN210699365U

CN210699365U - Tail gas purification device for power generation based on thermal power plant

Info

Publication number: CN210699365U
Application number: CN201921321873.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhengzhou Changhe Power Technology Co Ltd
Current assignee: Zhengzhou Changhe Power Technology Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-06-09
Anticipated expiration: 2029-08-15

Abstract

The utility model relates to a waste gas purification equipment technical field just discloses a tail gas cleanup unit for electricity generation based on thermal power plant, which comprises an outer cover, the inner wall fixedly connected with dust filter screen of dustcoat, fixed mounting has the reposition of redundant personnel post that is located dust filter screen one side in the inner chamber of dustcoat, the reposition of redundant personnel post is kept away from the one end of dust filter screen and is equipped with the wet curtain of filtration that is located dustcoat inside, the one side of filtering the wet curtain is provided with the tail gas spray room, the equal fixedly connected with reposition of redundant personnel post in both sides of tail gas spray room. This tail gas cleanup unit for power generation based on thermal power plant through set up the reposition of redundant personnel post between each purification layer inside the dustcoat, all shunts it when tail gas gets into the purification layer, has increased the area of contact of tail gas with the purification layer, has improved the purifying effect of tail gas, has avoided the problem that tail gas purification need circulate the purification after not up to standard to improve this purifier's purification efficiency, reduced air pollution.

Description

Tail gas purification device for power generation based on thermal power plant

Technical Field

The utility model relates to a waste gas purification equipment technical field specifically is a based on tail gas cleanup unit is used in power generation of thermal power plant.

Background

The exhaust gas treatment apparatus usually uses an adsorption method, an absorption method, a catalytic combustion method, a thermal combustion method, or the like for treating exhaust gas. When the purification method is selected, a method with low cost, low energy consumption and no secondary pollution is selected according to specific conditions, so that the harm is turned into the benefit as much as possible, and the components and the waste heat are fully recycled. In most cases, the petrochemical industry adopts methods such as condensation, absorption, direct combustion and the like due to high exhaust gas concentration; in the industries of coating construction, printing and the like, adsorption, catalytic combustion and other methods are adopted due to low exhaust concentration. When high-temperature waste gas flows through a carrier coated with a catalyst made of a noble metal material, harmful substances in the waste gas are subjected to chemical reaction under the action of the catalyst and the temperature to be converted into nontoxic H2O and CO2, and the main purpose is to remove the toxic and harmful substances and smoke dust in the waste gas discharged in industrial production, ensure that the waste gas reaches the standard after treatment and reduce the atmospheric pollution.

Traditional exhaust purification processing apparatus of thermal power plant exists and can't evenly shunt waste gas, lead to inside filter screen filter particulate matter not thorough, in addition, spray set among the traditional purification device only sprays from last to vertical down, because purifier's inner space is limited, the route of spraying liquid is shorter, unable abundant material reaction with in the tail gas, lead to tail gas purification incomplete, provide one kind for this reason and can realize the reposition of redundant personnel and prolong the tail gas cleanup unit who sprays liquid movement path length.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a based on tail gas cleanup unit is used in thermal power plant's electricity generation possesses to filter advantages such as abundant, circulation purification, has solved the problem that proposes in the above background art.

(II) technical scheme

The utility model provides a following technical scheme: the utility model provides a tail gas cleanup unit for electricity generation based on thermal power plant, includes the dustcoat, the inner wall fixedly connected with dust filter screen of dustcoat, fixed mounting has the reposition of redundant personnel post that is located dust filter screen one side in the inner chamber of dustcoat, the reposition of redundant personnel post is kept away from the one end of dust filter screen and is equipped with the wet curtain of filtration that is located dustcoat inside, one side of filtering the wet curtain is provided with the tail gas spray room, the equal fixedly connected with reposition of redundant personnel post in both sides of tail gas spray room, the inside of tail gas spray room is equipped with the branch liquid pipe, the middle part fixedly connected with solid fixed ring of branch liquid pipe, gu the inside activity of fixed ring has cup jointed the hydrojet circulating pipe, divide liquid pipe to keep away from solid fixed ring one side and evenly seted up spray nozzle, the lower part fixed mounting of branch liquid pipe has the hydrojet rotary drum, the bottom fixedly connected with, Oil smoke purifies section and active carbon adsorption layer, one side fixedly connected with of active carbon adsorption layer is kept away from to the dustcoat detects section connecting pipe, the inner wall that detects the section connecting pipe is equipped with the tail gas detector, the one end that the dustcoat was kept away from to the detection section connecting pipe is connected with the solenoid valve, the side fixedly connected with tail gas circulation purge tube of detection section connecting pipe, the one end that detection section connecting pipe was kept away from to the tail gas circulation purge tube with rotate motor fixed connection, the fixed cover of one end of solenoid valve has connect the blast pipe, the side of blast pipe is provided with high pressure positive blower, high pressure positive blower's air outlet and blast pipe fixed.

Preferably, an air inlet hole is formed in one end, close to the dust filter screen, of the outer cover, an air inlet pipe is fixedly sleeved inside the air inlet hole, and an air inlet valve is arranged on the surface of the air inlet pipe.

Preferably, the surface of the flow dividing column is uniformly provided with through holes, and the inside of the filtering wet curtain is adhered with adsorption water.

Preferably, the surface of the liquid spraying drum is uniformly provided with nozzles, the rotating support rod penetrates through the outer wall of the outer cover and extends to the outside of the outer cover, the outside of the outer cover is provided with a rotating motor, and a rotating shaft of the rotating motor is fixedly connected with the rotating support rod through a speed reducing mechanism.

Preferably, the leakage fluid dram that is located tail gas shower room department is seted up to the bottom of dustcoat, the leakage fluid dram passes through connecting pipe fixed connection and has reacted liquid recycling bin, the inside of reacting liquid recycling bin is provided with circulating water pump, the one end fixed connection who divides the liquid pipe is kept away from to circulating water pump's delivery port and hydrojet circulating pipe, the bottom and the side of reacting liquid recycling bin are provided with respectively and spray reaction liquid case and waste liquid bucket, all be equipped with the pipeline valve on the pipeline that reaction liquid case and waste liquid bucket and reaction liquid recycling bin are connected sprays.

Preferably, the one end that the gas pocket was seted up to the dustcoat is provided with the clean liquid case that is located the dustcoat outside, clean liquid case is connected with the suction pump, the play water end and the dustcoat of suction pump lead to pipe fixed connection.

(III) advantageous effects

Compared with the prior art, the utility model provides a based on tail gas cleanup unit is used in thermal power plant's electricity generation possesses following beneficial effect:

1. this tail gas cleanup unit for power generation based on thermal power plant through set up the reposition of redundant personnel post between each purification layer inside the dustcoat, all shunts it when tail gas gets into the purification layer, has increased the area of contact of tail gas with the purification layer, has improved the purifying effect of tail gas, has avoided the problem that tail gas purification need circulate the purification after not up to standard to improve this purifier's purification efficiency, reduced air pollution.

2. This tail gas cleanup unit for electricity generation based on thermal power plant drives branch liquid pipe and hydrojet rotary drum through utilizing the rotation motor to rotate, utilizes the centrifugal force of rotatory production to make the motion trail of dividing liquid pipe and the inside reaction liquid that sprays of hydrojet rotary drum become the curve by top-down's straight line, has prolonged the time that the reaction liquid that sprays descends to increased the reaction time who sprays impurity in reaction liquid and the tail gas, improved the purifying effect of the reaction liquid that sprays to tail gas, improved this purifier's purification performance then.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the tail gas spray chamber of the present invention.

In the figure: 1. a housing; 2. a dust filter screen; 3. a flow-dividing column; 4. filtering the wet curtain; 5. a tail gas spray chamber; 6. a spray circulation pipe; 7. a liquid separating pipe; 8. a spray drum; 9. rotating the support rod; 10. an oil fume purification section; 11. an activated carbon adsorption layer; 12. a detection section connecting pipe; 13. an exhaust gas detector; 14. an electromagnetic valve; 15. a tail gas circulating and purifying pipe; 16. a cleaning liquid tank; 17. spraying a reaction liquid box; 18. a reaction liquid circulation barrel; 19. a waste liquid barrel; 20. a high pressure fan; 21. a fixing ring; 22. rotating the motor; 23. and (6) entering the trachea.

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.

Referring to fig. 1-2, a tail gas purifying device for power generation in a thermal power plant comprises an outer cover 1, a dust filter screen 2 is fixedly connected to the inner wall of the outer cover 1, a splitter 3 located on one side of the dust filter screen 2 is fixedly installed in the inner cavity of the outer cover 1, a wet filter curtain 4 located inside the outer cover 1 is arranged at one end of the splitter 3 away from the dust filter screen 2, the wet filter curtain 4 can be made of a material with through holes and water absorption property such as sponge, tail gas passes through the through holes of the material, the contact area between the tail gas and water is increased, the filtering quality is greatly improved, a tail gas spray chamber 5 is arranged on one side of the wet filter curtain 4, the tail gas spray chamber 5 is located in the inner cavity of the outer cover 1, the splitter 3 is fixedly connected to both sides of the tail gas spray chamber 5, a liquid dividing pipe 7 is arranged inside the tail gas spray chamber 5, and a fixing ring 21 is fixedly, the fixed ring 21 connects the liquid spraying circulation pipe 6 with the liquid distribution pipe 7, and the liquid distribution pipe 7 and the liquid spraying drum 8 are ensured not to rotate when rotating, and the sealing performance of the liquid spraying circulation pipe 6 and the liquid distribution pipe 7 is ensured, the liquid spraying circulation pipe 6 is movably sleeved in the fixed ring 21, one side of the liquid distribution pipe 7 away from the fixed ring 21 is uniformly provided with a spraying nozzle, the lower part of the liquid distribution pipe 7 is fixedly provided with the liquid spraying drum 8, the bottom of the liquid spraying drum 8 is fixedly connected with a rotating support rod 9, the interior of the outer cover 1 is sequentially provided with the flow distribution column 3 positioned at the right side of the tail gas spraying chamber 5, the oil fume purification section 10 and the active carbon adsorption layer 11, the tail gas is sequentially purified, one side of the outer cover 1 away from the active carbon adsorption layer 11 is fixedly connected with a detection section connecting pipe 12, the inner wall of the detection, when the detection tail gas quality of tail gas detector 13 does not reach standard, solenoid valve 14 closes, tail gas purifies again through tail gas circulation purge tube 15, the one end that dustcoat 1 was kept away from to detection section connecting pipe 12 is connected with solenoid valve 14, the side fixedly connected with tail gas circulation purge tube 15 of detection section connecting pipe 12, the one end that detection section connecting pipe 12 was kept away from to tail gas circulation purge tube 15 and rotation motor 22 fixed connection, solenoid valve 14's the fixed exhaust pipe that has cup jointed of one end, the side of exhaust pipe is provided with high pressure positive blower 20, high pressure positive blower 20's air outlet and exhaust pipe fixed connection.

Wherein, the gas pocket has been seted up to the one end that dusty filter screen 2 is close to dusty filter screen 1, and the fixed cover in inside of going into the gas pocket has connect into trachea 23, and the surface that goes into trachea 23 is provided with into the air valve, when washing the inside of dusty shield 1 through cleaning liquid case 16, closes this and goes into the air valve, and the inside that tail gas got into dusty shield 1 when avoiding washing can't reach the purpose of purifying.

Wherein, the surface of reposition of redundant personnel post 3 has evenly seted up and has run through the through-hole, with the tail gas reposition of redundant personnel, increases the area of each purification portion and tail gas contact, improves the quality of purification, and the inside of filtering wet curtain 4 is stained with and has adsorbed water, and tail gas is through the inside of filtering wet curtain 4, can be better with water contact to dissolve magazine in aqueous, improved impurity filtering's performance.

Wherein, the spout has evenly been seted up on hydrojet rotary drum 8's surface, rotatory branch 9 runs through dustcoat 1's outer wall and extends to dustcoat 1's outside, dustcoat 1's outside is provided with rotates motor 22, speed reduction mechanism and rotatory branch 9 fixed connection are passed through in the pivot of rotating motor 22, traditional spray set is mostly fixed spraying, divide liquid pipe 7 can not remove, spray liquid from the top spout, this purifier has increased hydrojet rotary drum 8, and divide liquid pipe 7 and hydrojet rotary drum 8 all can rotate, the motion orbit that sprays the liquid under the effect of centrifugal force is the curve form, the time of spraying liquid at the inside dwell of tail gas spray chamber 5 has been increased, increase the time of spraying liquid and tail gas in the material reaction, thereby improve the utilization ratio of spraying liquid, the purification degree of tail gas has also been improved.

Wherein, the bottom of the outer cover 1 is provided with a liquid outlet positioned at the tail gas spray chamber 5, the liquid outlet is fixedly connected with a reaction liquid circulating barrel 18 through a connecting pipe, a circulating water pump is arranged inside the reaction liquid circulating barrel 18, the water outlet of the circulating water pump is fixedly connected with one end of a liquid spraying circulating pipe 6 far away from the liquid distributing pipe 7, the bottom and the side surface of the reaction liquid circulating barrel 18 are respectively provided with a spraying reaction liquid box 17 and a waste liquid barrel 19, pipelines for connecting the spraying reaction liquid box 17, the waste liquid barrel 19 and the reaction liquid circulating barrel 18 are respectively provided with a pipeline valve, the spraying liquid in the reaction liquid circulating barrel 18 is sprayed inside the tail gas spray chamber 5 through a nozzle and a nozzle to react with substances in the tail gas, most of the spraying liquid can not completely react with the substances in the tail gas due to too fast air flow, the waste of the spraying liquid can be reduced by recycling, when the recycling frequency is too many, the new spraying liquid needs to be replaced, the exhaust gas purification is prevented from failing to reach the standard.

Wherein, the one end that dustcoat 1 seted up into the gas pocket is provided with and is located dustcoat 1 outside clean liquid case 16, and clean liquid case 16 is connected with the suction pump, and the play water end and the dustcoat 1 of suction pump lead to pipe fixed connection, and tail gas is because purify incompletely when passing through this purifier, can remain in its inside matters such as dust impurity, piles up the pipeline that blocks up this purifier after long-time easily, leads to tail gas unable flow in this device.

Principle of operation

Firstly, tail gas enters an inner cavity of an outer cover 1 through a rotating motor 22, dust is filtered through a dust filter screen 2 and then enters a diversion column 3, other impurities which are not screened out by the dust filter screen 2 are intercepted inside a filtering wet curtain 4 through the filtering wet curtain 4 and then are shunted through the diversion column 3 and enter an tail gas spray chamber 5, a circulating water pump inside a reaction liquid circulating barrel 18 is started, spray liquid enters the interior of a liquid diversion pipe 7 through a spray liquid circulating pipe 6 and then is sprayed out through a spray nozzle, meanwhile, the spray liquid enters a spray liquid rotary barrel 8 and is sprayed out from a nozzle on the surface of the spray liquid rotary barrel 8, the rotating motor 22 is started, a rotary support rod 9 drives the spray liquid rotary barrel 8 and the liquid diversion pipe 7 to rotate, the tail gas is shunted through the tail gas spray chamber 5 and passes through the diversion column 3 to sequentially pass through an oil smoke purification section 10 and an active carbon adsorption layer 11 and then enters a detection section connecting pipe 12, secondly, after liquid in the reaction, the pipeline valve that will be connected with waste liquid bucket 19 is opened, close this pipeline valve after discharging the abandonment reaction liquid, will open with the pipeline valve that sprays reaction liquid case 17 and be connected again, after changing new reaction liquid, close this pipeline valve, finally, emit from detecting section connecting pipe 12 and exhaust duct after up to standard through the detection of tail gas detector 13, after tail gas detector 13 detects tail gas and is not up to standard, start solenoid valve 14 closes, open the valve at 15 both ends of tail gas circulation purge tube, tail gas circulation purifies to up to standard discharge, can.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a based on tail gas cleanup unit is used in power generation of thermal power plant, includes dustcoat (1), its characterized in that: the inner wall fixedly connected with dust filter screen (2) of dustcoat (1), fixed mounting has branch flow post (3) that is located dust filter screen (2) one side in the inner chamber of dustcoat (1), the one end that dust filter screen (2) were kept away from in branch flow post (3) is equipped with the wet curtain (4) of filtration that is located dustcoat (1) inside, one side of filtering wet curtain (4) is provided with tail gas shower room (5), the both sides of tail gas shower room (5) all fixedly connected with branch flow post (3), the inside of tail gas shower room (5) is equipped with liquid distribution pipe (7), the middle part fixedly connected with solid fixed ring (21) of liquid distribution pipe (7), the inside activity of solid fixed ring (21) has cup jointed liquid spray circulating pipe (6), the liquid distribution pipe (7) keep away from solid fixed ring (21) one side and has seted up even spray nozzle, the lower part fixedly mounted of liquid distribution pipe (7) has liquid spray rotary drum (8), the bottom of hydrojet rotary drum (8) is fixedly connected with rotatory branch pole (9), the inside of dustcoat (1) has set gradually branch post (3), oil smoke purification section (10) and active carbon adsorption layer (11) that are located tail gas shower room (5) right side, one side fixedly connected with detection section connecting pipe (12) that dustcoat (1) kept away from active carbon adsorption layer (11), the inner wall of detection section connecting pipe (12) is equipped with tail gas detector (13), the one end that detection section connecting pipe (12) kept away from dustcoat (1) is connected with solenoid valve (14), the side fixedly connected with tail gas circulation purge tube (15) of detection section connecting pipe (12), the one end that detection section connecting pipe (12) was kept away from in tail gas circulation purge tube (15) and rotation motor (22) fixed connection, the fixed cover of one end of solenoid valve (14) has connect the blast pipe, the side of blast pipe is provided with high pressure positive blower (20), the air outlet and the blast pipe fixed connection of high pressure positive blower (20).

2. The tail gas purification device for power generation based on the thermal power plant as claimed in claim 1, wherein: the dust filter is characterized in that an air inlet hole is formed in one end, close to the dust filter screen (2), of the outer cover (1), an air inlet pipe (23) is fixedly sleeved inside the air inlet hole, and an air inlet valve is arranged on the surface of the air inlet pipe (23).

3. The tail gas purification device for power generation based on the thermal power plant as claimed in claim 1, wherein: the surface of the flow dividing column (3) is uniformly provided with through holes, and the inside of the filtering wet curtain (4) is adhered with adsorption water.

4. The tail gas purification device for power generation based on the thermal power plant as claimed in claim 1, wherein: spouts have evenly been seted up on the surface of hydrojet rotary drum (8), rotatory branch (9) run through the outer wall of dustcoat (1) and extend to the outside of dustcoat (1), the outside of dustcoat (1) is provided with rotation motor (22), the pivot of rotating motor (22) passes through reduction gears and rotatory branch (9) fixed connection.

5. The tail gas purification device for power generation based on the thermal power plant as claimed in claim 1, wherein: the utility model discloses a reaction device, including dustcoat (1), exhaust fluid spraying room (5), hydrojet, reacting liquid circulation bucket (18) are seted up to the bottom of dustcoat (1), the leakage fluid outlet is through connecting pipe fixed connection reaction liquid circulation bucket (18), the inside of reaction liquid circulation bucket (18) is provided with circulating water pump, circulating water pump's delivery port and hydrojet circulating pipe (6) are kept away from the one end fixed connection who divides liquid pipe (7), the bottom and the side of reaction liquid circulation bucket (18) are provided with respectively and spray reaction liquid case (17) and waste liquid bucket (19), all be equipped with the pipeline valve on the pipeline that reaction liquid case (17) and waste liquid bucket (19) and reaction liquid circulation bucket (18) are connected.

6. The tail gas purification device for power generation based on the thermal power plant as claimed in claim 1, wherein: the one end that the gas pocket was seted up in dustcoat (1) is provided with and is located dustcoat (1) outside clean liquid case (16), clean liquid case (16) are connected with the suction pump, the play water end and dustcoat (1) of suction pump lead to pipe fixed connection.