CN210825803U

CN210825803U - Waste water filtering and precipitating tank for thermal power plant

Info

Publication number: CN210825803U
Application number: CN201920898132.9U
Authority: CN
Inventors: 朱凤凤; 韩臻; 周春平; 俞敏捷; 张兵; 王淑红; 王孙艳; 刘瑶
Original assignee: China Sinogy Electric Engineering Co Ltd
Current assignee: China Sinogy Electric Engineering Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-06-23
Anticipated expiration: 2029-06-14

Abstract

A waste water filtering and settling pond for a thermal power plant comprises: the heat conducting plate and the annular cavity are arranged in the settling chamber, high-temperature flue gas generated in the thermal power generation process is introduced into the annular cavity through the flue gas inlet pipe, and the high-temperature flue gas heats the wastewater in the settling chamber through the heat conducting plate, so that solid matters and water in the wastewater are separated, and the aim of zero discharge of the wastewater is fulfilled. A cover plate is arranged at the top end of the wastewater pool, and the cover plate is matched with a condensation cavity formed by enclosing a metal plate to absorb heat of steam, so that the steam is condensed into water drops to be attached to the metal plate and stored in a liquid collecting box; waste water advances intraductal toper impeller that is provided with, and the toper impeller passes through the connecting axle and drives cutting blade rotation, cuts up the great impurity in the waste water, avoids impurity in the waste water to block up ring pipeline and outlet pipe, improves work efficiency.

Description

Waste water filtering and precipitating tank for thermal power plant

Technical Field

The utility model relates to a waste water treatment technical field specifically is a thermal power plant filters sedimentation tank with waste water.

Background

With the increase of the number of industrial enterprises along with the national economic development, the treatment of various pollutants and wastes reaches a non-negligible state, and the national environmental protection standard is more and more strict. With the start of the implementation of the "emission standard of atmospheric pollutants for thermal power plants" released in 7 months in 2011 and the start of the release of the "water pollution prevention action plan" in document No. 17 (2015), the environmental protection pressure of thermal power plants is getting higher and higher. In recent years, the established thermal power plants spend a great deal of manpower, material resources and financial resources on controlling the emission of the atmospheric pollutants so as to reach the emission requirements of the new edition 'emission standard of the atmospheric pollutants for thermal power plants'. Along with the schedule of water pollution treatment in China, corresponding environment-friendly technologies are urgently needed by various thermal power plants, and investment and operation cost are reduced while waste water of the thermal power plants is effectively treated. In the traditional treatment process, wastewater is collected in a unit drainage tank, then is conveyed to a wastewater storage tank by a wastewater conveying pump, is fully stirred, and is recycled to a recovery water tank after pH adjustment, reaction, flocculation, clarification and final neutralization reaching the standard. The treatment method is complex and high in cost, so that the invention of the waste water filtering and settling tank for the thermal power plant is necessary to solve the problems.

SUMMERY OF THE UTILITY MODEL

A waste water filtering and settling pond for a thermal power plant comprises: a wastewater tank 1 consisting of a top cover plate 12 and a circular tank wall with a bottom plate, wherein a settling chamber 2 is arranged inside the wastewater tank 1, a wastewater inlet pipe 3 is connected with one side of the upper end of the tank wall of the wastewater tank 1, an annular pipeline 4 is arranged on the inner side of the upper end of the tank wall of the wastewater tank 1, the outer side of the annular pipeline 4 is communicated with the wastewater inlet pipe 3, a water outlet pipe 5 is fixedly connected with the inner side of the annular pipeline 4, the water outlet pipe 5 extends into the inner cavity of the settling chamber 2, a heat conducting plate 6 is arranged in the settling chamber 2, an outer side plate of the heat conducting plate 6 is welded with the inner wall of the settling chamber, a central bottom plate is welded with a side plate surface of a bottom wall boss 21 at the circle center of the settling tank 2 in a sealing manner, an annular cavity 7 is arranged between the lower part of the heat conducting plate 6 and the bottom wall of the settling tank, the annular cavity 7 is arranged at, the other end intercommunication of toroidal cavity 7 has flue gas exit tube 9, flue gas exit tube 9 fixed mounting is on wastewater disposal basin 1's lower extreme opposite side outer wall, diapire boss 21 middle part fixedly connected with of drip chamber 2 solenoid valve 10 with the inner chamber intercommunication of drip chamber 2, the bottom of solenoid valve 10 is connected with blow off pipe 11, condensation chamber 13 has been seted up to apron 12's inside, the top inboard of ring pool wall is provided with ring baffle 17 in wastewater disposal basin 1, ring pool wall processing has the L type passageway 18 with condensation chamber 13 intercommunication in wastewater disposal basin 1, the outside fixedly connected with of the ring pool wall of wastewater disposal basin 1 and the liquid collecting box 19 of L type passageway 18 intercommunication, wherein the one end and the condensation chamber 13 of L type passageway 18, the other end communicates with the water inlet of the liquid collecting box 19 in the pool wall outside.

Preferably, thermal power plant filters the sedimentation tank with waste water, waste water advances the inside a plurality of bracing pieces 31 that are provided with of one end that tub 3 is close to wastewater disposal basin 1, the inner wall fixed connection of tub 3 is advanced with waste water to the one end of bracing piece 31, the other end fixedly connected with seal sleeve 32 of bracing piece 31, connecting axle 33 has been cup jointed to seal sleeve 32's inside, the middle part of connecting axle 33 is passed through the bearing and is connected with seal sleeve 32 frictionless formula rotation, the one end fixedly connected with toper impeller 34 of connecting axle 33, the other end fixedly connected with connecting block 35 of connecting axle 33, a plurality of cutting blade 36 that are the annular array and distribute of outside fixedly connected with of connecting block 35, waste water advances the one end tip that tub 3 is close to.

Waste water that flows into in waste water advances pipe 3 drives toper impeller 34 rotatory, and toper impeller 34 drives cutting blade 36 through connecting axle 33 and rotates, smashes the bulky impurity in the waste water, avoids impurity in the waste water to block up ring pipeline 4 and outlet pipe 5.

Preferably, thermal power plant filters sedimentation tank with waste water, and the length direction that waste water advances pipe 3 is provided with multiunit cutting blade 36, further smashes bulky impurity through multistage cutting blade 36.

Preferably, the waste water filtering and settling tank for the thermal power plant is a curved plate protruding downwards of the heat conducting plate 6 in the settling chamber 2, and the cross section of the heat conducting plate 6 is an arc-shaped section.

The downward convex curved-surface plate-shaped heat-conducting plate 6 can increase the contact area with the annular cavity 7, accelerate the speed of heating the wastewater in the precipitation chamber 2 by the high-temperature flue gas in the annular cavity 7 and the evaporation speed of the wastewater, and improve the solid-liquid separation efficiency of the wastewater.

Preferably, thermal power plant filters sedimentation tank with waste water, is connected with a plurality of outlet pipes 5 and a plurality of outlet pipes 5 on the inner wall of ring conduit 4 and is the annular array and distributes.

The water outlet pipes 5 distributed in a plurality of annular matrixes enable waste water to uniformly flow into the settling chamber 2 and fully cover the upper plate surface of the whole heating plate 6, so that the waste water in the inner cavity of the settling chamber 2 is uniformly heated, and the purpose of rapid evaporation is achieved.

Preferably, in the wastewater filtering and settling tank for the thermal power plant, the cover plate 12 is an upward convex umbrella-shaped structure formed by welding a plurality of fan-shaped plates, the lower surface of the cover plate 12 is provided with a metal plate 14 with the same shape, and a condensation cavity is formed between the metal plate 14 and the cover plate 12.

The condensed water in the condensation chamber 13 absorbs the heat of the steam in the sedimentation tank 2 through the metal plate 14, so that the steam is condensed into water drops and attached to the metal plate 14.

Preferably, thermal power plant filters sedimentation tank with waste water, and bottom one side of apron 12 is provided with the comdenstion water that advances pipe 15 with condensation chamber 13 intercommunication, and the top fixedly connected with of apron 12 has the comdenstion water exit tube 16 with the inner chamber intercommunication of condensation chamber 13.

Utilize the booster pump to advance the pipe 15 with the comdenstion water through the comdenstion water and take out to the condensation chamber 13 in, the water after the heat absorption is gone out by the comdenstion water exit tube 16 at top, and the condensation effect is better.

Preferably, the thermal power plant is with waste water filtering sedimentation tank installs a plurality of exhaust fan device on the inboard pool wall in wastewater disposal basin 1. The exhaust fan device can accelerate the flow of steam and heat in the settling chamber 2 and improve the speed of solid-liquid separation in the settling chamber 2 and the integral uniformity.

This practical theory of operation: when the device works, firstly, wastewater generated in the thermal power generation process is discharged into the settling chamber 2 through the wastewater inlet pipe 3, in the process, the impulse of the wastewater flow can drive the conical impeller 34 to rotate, the conical impeller 34 drives the connecting block 35 to rotate through the connecting shaft 33, and the cutting blade 36 on the connecting block 35 can cut up larger impurities in the wastewater, so that the impurities are prevented from blocking the annular pipeline 4 or the water outlet pipe 5; then high-temperature flue gas generated in the thermal power generation process is introduced into the annular cavity 7 through the flue gas inlet pipe 8, the high-temperature flue gas heats the wastewater in the settling chamber 2 through the heat conducting plate 6 to be evaporated, the cooled flue gas enters the desulfurizing tower through the flue gas outlet pipe 9 to be desulfurized, and after the wastewater is evaporated, the remaining fluid residue flows into the biogas digester through the electromagnetic valve 10 and the connecting pipe 11; in addition, steam after the waste water evaporation gathers in the bottom of apron 12, the comdenstion water advances in pipe 15 and gets into in condensation chamber 13 through the comdenstion water, through the heat of metal sheet 14 absorption steam, make steam condense into the drop of water and attach to metal sheet 14, and the comdenstion water that the heat absorption rose flows out through comdenstion water exit tube 16, the drop of water attached to on metal sheet 14 is under the influence of gravity, along metal sheet 14 flow to the top edge of wastewater disposal basin 1, annular baffle 17 plays the effect of blockking, steam condensate water passes through L type passageway 18 at last and gets into in liquid collection box 19.

Description of the drawings:

the embodiments are further described with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of an overall wastewater filtering and settling tank for a thermal power plant according to the present invention;

FIG. 2 is a schematic view of the overall cross-sectional structure of the wastewater filtering and settling tank for thermal power plants according to the present invention;

FIG. 3 is a schematic sectional view of a wastewater inlet pipe of a wastewater filtering and settling tank for a thermal power plant according to the present invention; the specific structure corresponding to the number is as follows:

1-a wastewater tank; 2-a settling chamber; 21-bottom wall boss; 3-wastewater inlet pipe; 31-a support bar; 32-sealing the sleeve; 33-a connecting shaft; 34-a conical impeller; 35-connecting blocks; 36-a cutting blade; 37-coarse strainer; 4-an annular duct; 5-water outlet pipe; 6-heat conducting plate; 7-an annular cavity; 8-flue gas inlet pipe; 9-a flue gas outlet pipe; 10-an electromagnetic valve; 11-a sewage draining pipe; 12-a cover plate; 13-a condensation chamber; 14-a metal plate; 15-feeding condensed water into a pipe; 16-a condensed water outlet pipe; 17-an annular baffle; an 18-L shaped channel; 19-a liquid collection tank;

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

Specific embodiment example 1:

a waste water filtering and settling pond for a thermal power plant comprises: a wastewater tank 1 consisting of a top cover plate 12 and a circular tank wall with a bottom plate, wherein a settling chamber 2 is arranged inside the wastewater tank 1, a wastewater inlet pipe 3 is connected with one side of the upper end of the tank wall of the wastewater tank 1, an annular pipeline 4 is arranged on the inner side of the upper end of the tank wall of the wastewater tank 1, the outer side of the annular pipeline 4 is communicated with the wastewater inlet pipe 3, a water outlet pipe 5 is fixedly connected with the inner side of the annular pipeline 4, the water outlet pipe 5 extends into the inner cavity of the settling chamber 2, a heat conducting plate 6 is arranged in the settling chamber 2, an outer side plate of the heat conducting plate 6 is welded with the inner wall of the settling chamber, a central bottom plate is welded with a side plate surface of a bottom wall boss 21 at the circle center of the settling tank 2 in a sealing manner, an annular cavity 7 is arranged between the lower part of the heat conducting plate 6 and the bottom wall of the settling tank, the annular cavity 7 is arranged at, the other end intercommunication of toroidal cavity 7 has flue gas exit tube 9, flue gas exit tube 9 fixed mounting is on wastewater disposal basin 1's lower extreme opposite side outer wall, diapire boss 21 middle part fixedly connected with of drip chamber 2 solenoid valve 10 with the inner chamber intercommunication of drip chamber 2, the bottom of solenoid valve 10 is connected with blow off pipe 11, condensation chamber 13 has been seted up to the inside of apron 12, the top of ring pool wall is provided with ring baffle 17 near drip chamber inner chamber one side in wastewater disposal basin 1, ring pool wall processing has the L type passageway 18 with condensation chamber 13 intercommunication in wastewater disposal basin 1, the outside fixedly connected with of the ring pool wall of wastewater disposal basin 1 and the liquid collecting box 19 of L type passageway 18 intercommunication, wherein the one end and the condensation chamber 13 intercommunication of L type passageway 18, the other end and the water inlet intercommunication of the liquid collecting box 19 in the pool wall outside.

Further, waste water advances that pipe 3 is close to inside 2 bracing pieces 31 that are provided with of one end of wastewater disposal basin 1, the inner wall fixed connection who advances pipe 3 is advanced with waste water to the one end of bracing piece 31, bracing piece 31's other end fixedly connected with seal sleeve 32, connecting axle 33 has been cup jointed to seal sleeve 32's inside, the middle part of connecting axle 33 is passed through bearing and seal sleeve 32 frictionless formula and is rotated and be connected, the one end fixedly connected with toper impeller 34 of connecting axle 33, the other end fixedly connected with connecting block 35 of connecting axle 33, a plurality of cutting blade 36 that are the annular array and distribute of the outside fixedly connected with of connecting block 35, waste water advances that pipe 3 is close to one end tip of wastewater.

Further, 2 or 3 sets of cutting blades 36 are provided in the length direction of the waste water inlet pipe 3 to further crush the large-volume impurities.

Further, the heat conducting plate 6 in the settling chamber 2 is a curved plate protruding downwards, and the cross section of the heat conducting plate 6 is an arc section.

Furthermore, the inner wall of the annular pipeline 4 is connected with 6 or 8 water outlet pipes 5, and all the water outlet pipes 5 are distributed in an annular array.

Furthermore, the cover plate 12 is an upward convex umbrella-shaped structure formed by welding 8 equal-size sector plates, the lower surface of the cover plate 12 is provided with a metal plate 14 with the same shape, a condensation cavity is formed between the metal plate 14 and the cover plate 12, one side of the bottom end of the cover plate 12 is provided with a condensed water inlet pipe 15 communicated with the condensation cavity 13, and the top end of the cover plate 12 is fixedly connected with a condensed water outlet pipe 16 communicated with the inner cavity of the condensation cavity 13.

Furthermore, 3 exhaust fan devices are installed on the tank wall on the inner side of the wastewater tank 1, and the 3 exhaust fans are distributed around the circular tank wall at equal angles.

The heat-conducting plate and the annular cavity are arranged at the bottom of the settling chamber, high-temperature flue gas generated in the thermal power generation process is introduced into the annular cavity through the flue gas inlet pipe, the high-temperature flue gas heats the wastewater in the settling chamber through the heat-conducting plate, so that solid matters and water in the wastewater are separated, and the purpose of zero emission of the wastewater is achieved, compared with the traditional method, the method is simpler, and no new pollutant is generated; a cover plate is arranged at the top end of the wastewater pool, and the cover plate is matched with a condensation cavity formed by enclosing a metal plate to absorb heat of steam, so that the steam is condensed into water drops to be attached to the metal plate and stored in a liquid collecting box; waste water advances intraductal toper impeller that is provided with, and the toper impeller passes through the connecting axle and drives cutting blade rotation, cuts up the great impurity in the waste water, avoids impurity in the waste water to block up ring pipeline and outlet pipe, improves work efficiency.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A waste water filtering and settling pond for a thermal power plant comprises: by the top apron with the wastewater disposal basin that the ring form pool wall that has the bottom plate is constituteed, the inside of wastewater disposal basin is provided with the drip chamber, and pool wall upper end one side of wastewater disposal basin is connected with waste water and advances pipe, its characterized in that: an annular pipeline is arranged on the inner side of the upper end of the wall of the wastewater tank, the outer side of the annular pipeline is communicated with a wastewater inlet pipe, the inner side of the annular pipeline is fixedly connected with a water outlet pipe, the water outlet pipe extends into the inner cavity of the settling chamber, a heat conducting plate is arranged in the settling chamber, an outer side plate of the heat conducting plate is welded with the inner wall of the settling chamber, a central bottom plate is welded with the side plate surface of a bottom wall boss at the circle center of the settling chamber in a sealing manner, an annular cavity is arranged between the lower part of the heat conducting plate and the bottom wall of the settling chamber, the annular cavity is arranged at the lower end of the inner cavity of the wastewater tank, one end of the annular cavity is communicated with a flue gas inlet pipe, the flue gas inlet pipe is fixedly arranged on the outer wall of one side of the lower end of the wastewater tank, the bottom of solenoid valve is connected with the blow off pipe, and the condensation chamber has been seted up to the inside of apron, and the top of ring pool wall is close to sedimentation tank inner chamber one side and is provided with the ring baffle in the wastewater disposal basin, and ring pool wall processing has the L type passageway with condensation chamber intercommunication in the wastewater disposal basin, the outside fixedly connected with of pool wall and the liquid collecting box of L type passageway intercommunication, wherein the one end and the condensation chamber intercommunication of L type passageway, the other end and the liquid collecting box's in the pool wall outside water inlet intercommunication.

2. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: waste water advances the inside a plurality of bracing pieces that are provided with of one end that the pipe is close to the wastewater disposal basin, the inner wall fixed connection that the pipe was advanced to the one end of bracing piece and waste water, other end fixedly connected with seal tube, the connecting axle has been cup jointed to seal tube's inside, the middle part of connecting axle is passed through bearing and seal tube frictionless formula and is rotated and be connected, the one end fixedly connected with toper impeller of connecting axle, the other end fixedly connected with connecting block of connecting axle, a plurality of cutting blades that are the annular array and distribute of outside fixedly.

3. The wastewater filtering and settling tank for the thermal power plant according to claim 2, wherein: the length direction of the waste water inlet pipe is provided with a plurality of groups of cutting blades.

4. The wastewater filtering and settling tank for the thermal power plant according to claim 2, wherein: a coarse filter screen is arranged at the end part of one end of the wastewater inlet pipe close to the wastewater tank.

5. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: the heat conducting plate in the settling chamber is a curved plate protruding downwards, and the cross section of the heat conducting plate is an arc-shaped section.

6. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: the inner wall of the annular pipeline is connected with a plurality of water outlet pipes which are distributed in an annular array.

7. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: the cover plate is of an upward convex umbrella-shaped structure formed by welding a plurality of fan-shaped plates, the lower surface of the cover plate is provided with metal plates with the same shape, and a condensation cavity is formed between the metal plates and the cover plate.

8. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: and a condensed water inlet pipe communicated with the condensation cavity is arranged on one side of the bottom end of the cover plate, and a condensed water outlet pipe communicated with the inner cavity of the condensation cavity is fixedly connected to the top end of the cover plate.

9. The wastewater filtering and settling tank for the thermal power plant according to claim 1, wherein: and a plurality of exhaust fan devices are arranged on the tank wall at the inner side of the wastewater tank.