CN213713992U

CN213713992U - Boiler dust remover

Info

Publication number: CN213713992U
Application number: CN202022782021.7U
Authority: CN
Inventors: 张伟; 张林春; 刘华群
Original assignee: Yancheng Qunsheng Environmental Protection Equipment Co ltd
Current assignee: Yancheng Qunsheng Environmental Protection Equipment Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-16
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a boiler dust remover, include: the utility model provides a desulfurization and denitrification tower, including tower body, upper end, grid baffle and drawing liquid cavity, the tower body be provided with the boiler flue gas import lower extreme one side of tower body the upper end of tower body is provided with clean exhanst gas outlet the middle part of tower body is provided with grid baffle and lower grid baffle go up the intussuseption of tower body between grid baffle and the lower grid baffle and be filled with desulfurization and denitrification reaction filler be provided with the reaction cistern in the tower body of boiler flue gas import lower extreme be provided with in the reaction cistern and collect cavity, deposit the cavity and draw liquid cavity be provided with first baffle between collection cavity and the deposit cavity the upper end of first baffle is provided with first overflow mouth be provided with the second baffle between deposit the cavity and the drawing liquid cavity the upper end of second baffle is provided with the second overflow mouth the lower extreme opposite side of tower body is provided with the.

Description

Boiler dust remover

Technical Field

The utility model relates to a flue gas treatment facility especially relates to a boiler dust remover.

Background

Flue gas generated by an industrial boiler usually carries a large amount of sulfur and nitrate substances and dust, and the emission requirement of a boiler dust remover is higher and higher along with the further improvement of the national environmental protection standard. At present, adopt warm law SOx/NOx control and dust removal on the market usually, utilize the reaction liquid circulation to spray and react with the flue gas on the reaction filler to realize SOx/NOx control, certain dust gets into the reaction cistern is taken away along the reaction filler drippage to the reaction liquid, thereby realizes SOx/NOx control and dust removal. At present, the dust is brought into the reaction inslot after mixing with the reaction liquid and is supplied not have fine isolating construction when recycling, lead to the dust to be brought into the reaction liquid by the circulation easily, thereby it is poor to cause SOx/NOx control effect, the dust removal effect is also unsatisfactory, simultaneously, current dust collecting equipment has a large amount of water smoke to be taken away after handling the flue gas, emission standard is not up to standard, the treatment effect is unsatisfactory, in addition, boiler flue gas can carry certain heat and get into dust collecting equipment, if directly handle the waste that can cause the energy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the boiler dust remover can utilize the waste heat of the flue gas to dry water mist.

In order to solve the technical problem, the utility model discloses a technical scheme is: a boiler dust collector, comprising: the device comprises a tower body, wherein a boiler flue gas inlet is arranged on one side of the lower end of the tower body, a clean flue gas outlet is arranged at the upper end of the tower body, an upper grid baffle and a lower grid baffle are arranged in the middle of the tower body, a desulfurization and denitrification reaction filler is filled in the tower body between the upper grid baffle and the lower grid baffle, a reaction liquid tank is arranged in the tower body at the lower end of the boiler flue gas inlet, a collection chamber, a precipitation chamber and a liquid pumping chamber are arranged in the reaction liquid tank, a first baffle is arranged between the collection chamber and the precipitation chamber, a first overflow port is arranged at the upper end of the first baffle, a second baffle is arranged between the precipitation chamber and the liquid pumping chamber, a second overflow port is arranged at the upper end of the second baffle, a water pump is arranged on the other side of the lower end of the tower body, and the liquid pumping port of the water pump extends into the liquid pumping, the liquid outlet of the water pump is connected with a liquid outlet pipe, the liquid outlet pipe is fixed on the tower body, a lower spray pipe is arranged in the tower body between the boiler flue gas inlet and the lower grid baffle, one end of the lower spray pipe extends out of the tower body and is communicated with the liquid outlet pipe, a plurality of lower spray heads are uniformly arranged on the lower spray pipe, an upper spray pipe is arranged in the tower body at the upper end of the upper grid baffle, one end of the upper spray pipe extends out of the tower body and is communicated with the liquid outlet pipe, a plurality of upper spray heads are uniformly arranged on the upper spray pipe, a demister is arranged in the tower body at the upper end of the upper spray pipe, a drying pipe is arranged in the tower body between the upper spray pipe and the demister, a plurality of hot air spray holes are uniformly arranged on the drying pipe, one end of the drying pipe extends out of the tower body and is connected with a vertical air supply, be provided with the spiral blast pipe in the boiler flue gas import the outside of spiral blast pipe evenly is provided with a plurality of heat absorbing sheets, the one end of spiral blast pipe is connected with vertical blast pipe, the other end of spiral blast pipe stretches out the air outlet of boiler flue gas import and air exhauster and is connected, the suction opening and the outside of air exhauster communicate each other, the fixed outside that sets up at boiler flue gas import of air exhauster.

In order to better solve the technical problem, the utility model discloses a further technical scheme is: and the outer side of the vertical air supply pipe is wrapped with a heat insulation layer.

In order to better solve the technical problem, the utility model discloses a further technical scheme is: the lower end of the reaction liquid tank is respectively provided with a first sewage outlet communicated with the collection chamber and a second sewage outlet communicated with the precipitation chamber.

The utility model has the advantages that: above-mentioned boiler dust remover, novel structure, the reaction cistern adopts collects the cavity, deposit the cavity and the combination of drawing liquid cavity forms, reaction liquid after the dust removal can be used to the drawing liquid intracavity through collecting the cavity and depositing the twice back overflow that deposits of cavity, can not carry more dust when guaranteeing reaction liquid recycling, the reaction quality and the dust removal effect of SOx/NOx control reaction filler when guaranteeing to spray, and simultaneously, set up the spiral blast pipe in boiler flue gas import, and set up the heat absorption piece on the spiral blast pipe, the waste heat in the flue gas can be absorbed to the spiral blast pipe and the air of its inside process is heated and is formed hot-blastly, hot-blast refeed tower body upper end is dried to the water smoke, make full use of flue gas waste heat, energy utilization is rateed highly, guarantee that the flue gas of emission can reach higher standard, fully realize SOx/NOx control and dust removal.

Drawings

Fig. 1 is a schematic structural view of the boiler dust remover of the present invention.

Fig. 2 is an enlarged schematic view of the spiral air supply duct of fig. 1.

In the figure: 1. the device comprises a tower body, 2, a boiler flue gas inlet, 3, a clean flue gas outlet, 4, an upper grid baffle, 5, a lower grid baffle, 6, desulfurization and denitrification reaction packing, 7, a reaction liquid groove, 8, a collection chamber, 9, a precipitation chamber, 10, a liquid pumping chamber, 11, a first partition plate, 12, a first overflow port, 13, a second partition plate, 14, a second overflow port, 15, a water pump, 16, a liquid pumping pipe, 17, a liquid discharging pipe, 18, a lower spraying pipe, 19, a lower spraying head, 20, an upper spraying pipe, 21, an upper spraying head, 22, a demister, 23, a drying pipe, 24, hot air spraying holes, 25, a vertical air feeding pipe, 26, a spiral air feeding pipe, 27, a heat absorbing sheet, 28, an exhaust fan, 281, an air suction port, 29 and a heat insulating layer.

Detailed Description

The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the boiler dust remover comprises: the device comprises a tower body 1, wherein a boiler flue gas inlet 2 is arranged on one side of the lower end of the tower body 1, a clean flue gas outlet 3 is arranged at the upper end of the tower body 1, an upper grid baffle 4 and a lower grid baffle 5 are arranged in the middle of the tower body 1, a desulfurization and denitrification reaction filler 6 is filled in the tower body 1 between the upper grid baffle 4 and the lower grid baffle 5, a reaction liquid tank 7 is arranged in the tower body 1 at the lower end of the boiler flue gas inlet 2, a collecting chamber 8, a settling chamber 9 and a liquid pumping chamber 10 are arranged in the reaction liquid tank 7, a first baffle plate 11 is arranged between the collecting chamber 8 and the settling chamber 9, a first overflow port 12 is arranged at the upper end of the first baffle plate 11, a second baffle plate 13 is arranged between the settling chamber 9 and the liquid pumping chamber 10, a second overflow port 14 is arranged at the upper end of the second baffle plate 13, and a water pump 15 is arranged on the other side of, a liquid pumping port of the water pump 15 extends into the liquid pumping cavity 10 through a liquid pumping pipe 16, a liquid outlet of the water pump 15 is connected with a liquid outlet pipe 17, the liquid outlet pipe 17 is fixed on the tower body 1, a lower spray pipe 18 is arranged in the tower body 1 between the boiler flue gas inlet 2 and the lower grid baffle 4, one end of the lower spray pipe 18 extends out of the tower body 1 and is communicated with the liquid outlet pipe 17, a plurality of lower spray heads 19 are uniformly arranged on the lower spray pipe 18, an upper spray pipe 20 is arranged in the tower body 1 at the upper end of the upper grid baffle 5, one end of the upper spray pipe 20 extends out of the tower body 1 and is communicated with the liquid outlet pipe 17, a plurality of upper spray heads 21 are uniformly arranged on the upper spray pipe 20, a demister 22 is arranged in the tower body 1 at the upper end of the upper spray pipe 20, and a drying pipe 23 is arranged in the tower body 1 between the upper spray, evenly be provided with a plurality of hot-blast orifice 24 on the drying pipe 23, the one end of drying pipe 23 is stretched out the tower body 1 and is connected with vertical air supply pipe 25, vertical air supply pipe 25 is fixed to be set up on tower body 1 be provided with spiral air supply pipe 26 in the boiler flue gas import 2 the outside of spiral air supply pipe 26 evenly is provided with a plurality of heat absorbing sheet 27, the one end of spiral air supply pipe 26 is connected with vertical air supply pipe 25, the other end of spiral air supply pipe 26 stretches out boiler flue gas import 2 and is connected with the air outlet of air exhauster 28, the suction opening 281 of air exhauster 28 communicates with each other with the outside, the fixed outside that sets up at boiler flue gas import 2 of air exhauster 28.

As shown in fig. 1, in this example, the vertical air feed pipe 25 is wrapped with an insulation layer 29.

As shown in fig. 1, in this example, a first drain communicated with the collection chamber 8 and a second drain communicated with the precipitation chamber 9 are respectively provided at the lower end of the reaction liquid tank 7.

When the boiler dust remover is used, boiler flue gas enters the tower body 1 from the boiler flue gas inlet 2 and flows upwards to sequentially pass through the lower spray pipe 18, the lower grid baffle 5, the desulfurization and denitrification reaction filler 6, the upper grid baffle 4, the upper spray pipe 20, the drying pipe 23 and the demister 22 and is finally discharged from the clean flue gas outlet 3, meanwhile, the water pump 15 and the exhaust fan 28 are started, the water pump 15 pumps out reaction liquid in the liquid pumping cavity 10 and respectively sends the reaction liquid into the lower spray pipe 18 and the upper spray pipe 20 through the liquid outlet pipe 17, the reaction liquid in the lower spray pipe 18 is sprayed from the lower spray head 19 to bring dust in the flue gas into the collection cavity 8, the reaction liquid in the upper spray pipe 20 is sprayed from the upper spray head 21 to the desulfurization and denitrification reaction filler 6 to react with the flue gas in the desulfurization and denitrification reaction filler 6 to realize desulfurization and denitrification, and the reaction liquid after desulfurization and denitrification falls into the collection cavity, the mixed solution of the reaction liquid flows into the precipitation chamber 9 from the first overflow port 12 after the first precipitation and collection in the collection chamber 8, after the secondary sedimentation, the water in the sedimentation chamber 9 overflows from the second overflow port 14 to the water supply pump 15 in the liquid pumping chamber 10 for recycling, an air suction port 281 of an exhaust fan 28 sucks external air into the spiral air supply pipe 26, the heat absorption sheets 27 fully absorb the residual heat of the flue gas entering the boiler flue gas inlet 2 and heat the air in the spiral air supply pipe 26, the air is heated and then sequentially sprayed out from the plurality of hot air spray holes 24 through the vertical air supply pipe 25 and the drying pipe 23 to dry the water-containing mist flue gas passing between the upper spray pipe 20 and the demister 22, most of the water mist in the flue gas is dried to form water drops which fall below the tower body 1, and the flue gas containing a small amount of water mist is further removed with the water mist through the demister 22 and then is discharged from the clean flue gas outlet 3.

Above-mentioned boiler dust remover, novel structure, the reaction cistern adopts collects the cavity, deposit the cavity and the combination of drawing liquid cavity forms, reaction liquid after the dust removal can be used to the drawing liquid intracavity through collecting the cavity and depositing the twice back overflow that deposits of cavity, can not carry more dust when guaranteeing reaction liquid recycling, the reaction quality and the dust removal effect of SOx/NOx control reaction filler when guaranteeing to spray, and simultaneously, set up the spiral blast pipe in boiler flue gas import, and set up the heat absorption piece on the spiral blast pipe, the waste heat in the flue gas can be absorbed to the spiral blast pipe and the air of its inside process is heated and is formed hot-blastly, hot-blast refeed tower body upper end is dried to the water smoke, make full use of flue gas waste heat, energy utilization is rateed highly, guarantee that the flue gas of emission can reach higher standard, fully realize SOx/NOx control and dust removal.

Claims

1. Boiler dust remover, its characterized in that: the method comprises the following steps: the device comprises a tower body (1), wherein a boiler flue gas inlet (2) is arranged on one side of the lower end of the tower body (1), a clean flue gas outlet (3) is arranged at the upper end of the tower body (1), an upper grid baffle (4) and a lower grid baffle (5) are arranged in the middle of the tower body (1), a desulfurization and denitrification reaction filler (6) is filled in the tower body (1) between the upper grid baffle (4) and the lower grid baffle (5), a reaction liquid tank (7) is arranged in the tower body (1) at the lower end of the boiler flue gas inlet (2), a collecting chamber (8), a settling chamber (9) and a liquid pumping chamber (10) are arranged in the reaction liquid tank (7), a first partition plate (11) is arranged between the collecting chamber (8) and the settling chamber (9), and a first overflow port (12) is arranged at the upper end of the first partition plate (11), a second clapboard (13) is arranged between the sedimentation chamber (9) and the liquid-pumping chamber (10), a second overflow port (14) is arranged at the upper end of the second clapboard (13), a water pump (15) is arranged at the other side of the lower end of the tower body (1), the liquid-pumping port of the water pump (15) extends into the liquid-pumping chamber (10) through a liquid-pumping pipe (16), the liquid outlet of the water pump (15) is connected with a liquid outlet pipe (17), the liquid outlet pipe (17) is fixed on the tower body (1), a lower spray pipe (18) is arranged in the tower body (1) between the boiler flue gas inlet (2) and the lower grid baffle plate (5), one end of the lower spray pipe (18) extends out of the tower body (1) to be communicated with the liquid outlet pipe (17), a plurality of lower spray heads (19) are uniformly arranged on the lower spray pipe (18), an upper spray pipe (20) is arranged in the tower body (1) at the upper end of the upper grid baffle plate (4), one end of the upper spray pipe (20) extends out of the tower body (1) and is communicated with the liquid outlet pipe (17), a plurality of upper spray heads (21) are uniformly arranged on the upper spray pipe (20), a demister (22) is arranged in the tower body (1) at the upper end of the upper spray pipe (20), a drying pipe (23) is arranged in the tower body (1) between the upper spray pipe (20) and the demister (22), a plurality of hot air spray holes (24) are uniformly arranged on the drying pipe (23), one end of the drying pipe (23) extends out of the tower body (1) and is connected with a vertical air supply pipe (25), the vertical air supply pipe (25) is fixedly arranged on the tower body (1), a spiral air supply pipe (26) is arranged in the boiler flue gas inlet (2), a plurality of heat absorption sheets (27) are uniformly arranged on the outer side of the spiral air supply pipe (26), one end of the spiral air supply pipe (26) is connected with the vertical air supply pipe (25), the other end of the spiral air supply pipe (26) stretches out of an air outlet of the boiler flue gas inlet (2) and the exhaust fan (28) and is connected with the air outlet, an air suction opening (281) of the exhaust fan (28) is communicated with the outside, and the exhaust fan (28) is fixedly arranged on the outer side of the boiler flue gas inlet (2).

2. A boiler dust remover according to claim 1, wherein: and the outer side of the vertical air supply pipe (25) is wrapped with an insulating layer (29).

3. A boiler dust remover according to claim 1, wherein: the lower end of the reaction liquid tank (7) is respectively provided with a first sewage outlet communicated with the collection chamber (8) and a second sewage outlet communicated with the precipitation chamber (9).