CN216572383U

CN216572383U - Denitration tower for boiler flue gas purification treatment

Info

Publication number: CN216572383U
Application number: CN202122533118.9U
Authority: CN
Inventors: 王喆; 徐德勤; 王海彬; 王越; 王浩羽; 王刚; 王晓东; 白杨; 高峰; 张博; 高英伟
Original assignee: Dalian Power Plant of Huaneng International Power Co Ltd
Current assignee: Dalian Power Plant of Huaneng International Power Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-24
Anticipated expiration: 2031-10-20

Abstract

The utility model provides a denitration tower for boiler flue gas purification treatment, which comprises a base, wherein a tower body is connected to the top end of the base, a mounting frame is arranged on the inner bottom wall of the base, a negative pressure fan is connected to the inner bottom wall of the mounting frame, the negative pressure fan is communicated with the tower body through a guide pipe, a partition board is connected to the upper end inside the tower body, a circulation component is arranged at the top end of the partition board, the circulation component comprises a seal box, the seal box is connected to the top end of the partition board, a flue gas detector is connected to the inner bottom wall of the seal box, the bottom end of the partition board is symmetrically connected with an air inlet cover, a first electromagnetic valve is connected to the upper end of the inner side wall of the seal box, a circulation pipe is connected to one side of the tower body, one end of the circulation pipe is communicated with the first electromagnetic valve through a guide pipe, and the other end of the circulation pipe is communicated with the negative pressure fan through a guide pipe. According to the utility model, the circulating component is arranged, so that the purified flue gas is detected in real time, the substandard flue gas is recycled and purified again, the emission rate of the substandard flue gas is reduced, and the atmospheric pollution is reduced.

Description

Denitration tower for boiler flue gas purification treatment

Technical Field

The utility model mainly relates to the technical field of flue gas denitration towers, in particular to a denitration tower for boiler flue gas purification treatment.

Background

The denitration tower is an important device in a flue gas denitration system, in the flue gas treatment process containing nitrogen oxides, the processes for absorbing nitrogen dioxide comprise SCR, SNCR and wet denitration at present, and the denitration tower comprises a tower body, a gas distributor, a liquid redistribution ring, a spraying device (containing a special spray head), a demister and the like.

According to patent document (publication number CN212523484U) a dust removal denitration spray tower device that provides, including the tower body, the tower body top is provided with the top cap, the top cap top is provided with the air exit, tower body bottom one side position is provided with the liquid reserve tank, tower body outer lane one side position is provided with a plurality of solid fixed rings, gu be provided with fixed circular slot in the fixed ring, be provided with adjustable activity plectane in the fixed circular slot, terminal surface middle part position is provided with monitoring glass before the activity plectane, fixed circular slot both sides inner wall is provided with the fixed slot, be provided with adjustable limiting plate in the fixed slot, activity plectane outer lane both sides terminal surface corresponds the limiting plate position and is provided with the constant head tank. According to the dust-removing and denitration spray tower device, the adjustable movable circular plate is arranged in the fixing ring, the monitoring glass is arranged in the middle of the movable circular plate, observation and monitoring are facilitated, the monitoring effect is maintained, and meanwhile the device can be used as a repair window which is convenient to disassemble, so that the spray tower is more convenient to overhaul.

The existing denitration tower equipment has a common purification effect on flue gas, has the problem that the flue gas is discharged to the atmosphere without reaching the emission standard after being purified, is easy to cause atmospheric pollution, and is difficult to meet the use requirement.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a denitration tower for boiler flue gas purification treatment, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a denitration tower for boiler flue gas purification treatment comprises a base, a tower body is connected to the top end of the base, a mounting frame is arranged on the inner bottom wall of the base, a negative pressure fan is connected to the inner bottom wall of the mounting frame, the negative pressure fan is communicated with the tower body through a guide pipe, a separation plate is connected to the upper end of the inside of the tower body, a circulation component is arranged on the top end of the separation plate, the circulation component comprises a seal box, the seal box is connected to the middle position of the top end of the separation plate, a flue gas detector is connected to the inner bottom wall of the seal box, an air inlet cover is symmetrically connected to the bottom end of the separation plate, the top end of the air inlet cover is communicated with the flue gas detector through a guide pipe, a first electromagnetic valve is connected to the upper end of the inner side wall of the seal box, a circulation pipe is connected to one side of the tower body, one end of the circulation pipe is communicated with the first electromagnetic valve through a guide pipe, the other end of the circulating pipe is communicated with the negative pressure fan through a guide pipe.

Preferably, the lower extreme of body of the tower inside is connected with flue gas purifier to accomplish the purification performance to the flue gas.

Preferably, the middle position of the top end of the tower body is connected with an exhaust chimney, the exhaust chimney is bent, a filter screen is arranged inside the exhaust chimney, the inner top wall of the seal box is connected with a second electromagnetic valve, and the second electromagnetic valve is communicated with the exhaust chimney, so that external dust is prevented from entering equipment from the exhaust chimney, and damage to electronic components is avoided.

Preferably, the external connection of body of the tower has the mount, the bottom equipartition of mount is connected with three support column, and is three the bottom of support column is connected with the base to for the body of the tower provides holding power, improve stability.

Preferably, the bottom symmetric connection of mounting bracket has the gyro wheel, the spout has been seted up to the inner diapire symmetry of base, the gyro wheel is sliding connection with the spout to the convenience takes out the mounting bracket and carries out negative-pressure air fan's periodic overhaul maintenance work.

Preferably, the one end of base is connected with the air inlet, the air inlet is linked together through pipe and negative-pressure air fan, the outside of air inlet is provided with the screw thread to increase air inlet and boiler and be connected the leakproofness, avoid the flue gas to leak and discharge.

Preferably, the one end of base is connected with the access door, the outside of access door is provided with the rubber sealing ring to inside the reduction external dust gets into equipment, the normal operating of influence equipment.

Compared with the prior art, the utility model has the beneficial effects that:

boiler flue gas gets into inside back of equipment, carry out purification treatment to the flue gas through gas purifier, then the flue gas gets into inside and detect of flue gas detector through the cover that admits air, if the testing result is up to standard then directly discharge to the atmosphere in, if the testing result is not up to standard, then open first solenoid valve, the flue gas follows the order that the circulation pipe arrives negative-pressure air fan to the body of the tower again, carry out the purification treatment process again, through being provided with the circulation subassembly, carry out real-time detection to the flue gas after the purification, make the flue gas recirculation of not up to standard purify, the emission rate of the flue gas of not up to standard has been reduced, reduce the atmosphere pollution.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

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

FIG. 2 is a schematic front sectional view of the present invention;

FIG. 3 is an enlarged view of area B of FIG. 2;

fig. 4 is an enlarged view of region a in fig. 1.

In the figure: 1. a base; 11. an access door; 12. a mounting frame; 13. a roller; 14. a chute; 15. a separator plate; 2. a tower body; 3. a fixed mount; 31. a support pillar; 4. an exhaust chimney; 5. a circulation component; 51. a circulation pipe; 52. an air intake hood; 53. a sealing box; 54. a smoke detector; 55. A first solenoid valve; 56. a second solenoid valve; 6. a negative pressure fan; 7. a flue gas purifier; 8. An air inlet.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-4, a denitration tower for purifying boiler flue gas, includes a base 1, a tower body 2 connected to a top end of the base 1, a flue gas purifier 7 connected to a lower end of the inside of the tower body 2, thereby completing a purification function of flue gas, an inner bottom wall of the base 1 is provided with a mounting frame 12, an inner bottom wall of the mounting frame 12 is connected with a negative pressure fan 6, the negative pressure fan 6 is communicated with the tower body 2 through a conduit, an upper end of the inside of the tower body 2 is connected with a partition board 15, a circulation assembly 5 is arranged at a top end of the partition board 15, the circulation assembly 5 includes a seal box 53, the seal box 53 is connected to a middle position of the top end of the partition board 15, an inner bottom wall of the seal box 53 is connected with a flue gas detector 54, a bottom end of the partition board 15 is symmetrically connected with a gas inlet hood 52, a top end of the gas inlet hood 52 is communicated with the flue gas detector 54 through a conduit, therefore, whether the purified flue gas reaches the standard or not is detected through the flue gas detector 54, the upper end of the inner side wall of the sealed box 53 is connected with the first electromagnetic valve 55, one side of the tower body 2 is connected with the circulating pipe 51, one end of the circulating pipe 51 is communicated with the first electromagnetic valve 55 through a guide pipe, the other end of the circulating pipe 51 is communicated with the negative pressure fan 6 through a guide pipe, the middle position of the top end of the tower body 2 is connected with the exhaust chimney 4, the exhaust chimney 4 is bent, a filter screen is arranged in the exhaust chimney 4, the inner top wall of the sealed box 53 is connected with the second electromagnetic valve 56, and the second electromagnetic valve 56 is communicated with the exhaust chimney 4, so that external dust is prevented from entering the equipment from the exhaust chimney 4, and damage to electronic elements is avoided.

Referring to fig. 1, 2 and 4, a fixing frame 3 is connected to the outside of the tower body 2, three support columns 31 are equally connected to the bottom end of the fixing frame 3, the bottom ends of the three support columns 31 are connected to the base 1, so as to provide a supporting force for the tower body 2 and improve stability, rollers 13 are symmetrically connected to the bottom end of the mounting frame 12, sliding grooves 14 are symmetrically formed in the inner bottom wall of the base 1, the rollers 13 are slidably connected to the sliding grooves 14, so as to facilitate taking out the mounting frame 12 for regular maintenance of the negative pressure fan 6, an air inlet 8 is connected to one end of the base 1, the air inlet 8 is communicated with the negative pressure fan 6 through a guide pipe, threads are formed in the outside of the air inlet 8, so as to increase the sealing performance of the connection between the air inlet 8 and a boiler and avoid the leakage and discharge of smoke, and an access door 11 is connected to one end of the base 1, the outside of access door 11 is provided with the rubber ring seal to inside the reduction external dust gets into equipment, the normal operating of influence equipment.

The specific operation mode of the utility model is as follows:

boiler flue gas enters the equipment from the air inlet 8, then the flue gas is sent into the tower body 2 by the negative pressure fan 6, the flue gas is purified by the flue gas purifier 7, then the flue gas enters the flue gas detector 54 through the air inlet cover 52, the purified flue gas is detected by the flue gas detector 54, if the detection result reaches the standard, the second electromagnetic valve 56 is opened, the flue gas is discharged to the atmosphere from the exhaust chimney 4, if the detection result does not reach the standard, the first electromagnetic valve 55 is opened, and the flue gas flows to the negative pressure fan 6 along the circulating pipe 51 and then to the tower body 2, and the purification treatment process is carried out again.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a denitration tower of boiler gas cleaning processing, includes base (1) and body of the tower (2), its characterized in that, body of the tower (2) is connected in the top of base (1), the interior diapire of base (1) is provided with mounting bracket (12), the interior diapire of mounting bracket (12) is connected with negative-pressure air fan (6), negative-pressure air fan (6) are linked together through pipe and body of the tower (2), the upper end of the inside of body of the tower (2) is connected with division board (15), the top of division board (15) is provided with circulation subassembly (5), circulation subassembly (5) include seal box (53), seal box (53) are connected in the intermediate position on division board (15) top, the interior diapire of seal box (53) is connected with flue gas detector (54), the bottom symmetric connection of division board (15) has air inlet hood (52), the top of air inlet cover (52) is linked together through pipe and flue gas detector (54), the upper end of seal box (53) inside wall is connected with first solenoid valve (55), one side of body of the tower (2) is connected with circulating pipe (51), the one end of circulating pipe (51) is linked together through pipe and first solenoid valve (55), the other end of circulating pipe (51) is linked together through pipe and negative pressure fan (6).

2. The denitration tower for boiler flue gas purification treatment according to claim 1, wherein a flue gas purifier (7) is connected to the lower end inside the tower body (2).

3. The denitration tower for boiler flue gas purification treatment according to claim 1, wherein an exhaust chimney (4) is connected to the middle position of the top end of the tower body (2), the exhaust chimney (4) is bent, a filter screen is arranged inside the exhaust chimney (4), a second electromagnetic valve (56) is connected to the inner top wall of the seal box (53), and the second electromagnetic valve (56) is communicated with the exhaust chimney (4).

4. The denitration tower for boiler flue gas purification according to claim 1, wherein a fixing frame (3) is connected to the outside of the tower body (2), three supporting columns (31) are connected to the bottom end of the fixing frame (3) in an equally-divided manner, and the bottom ends of the three supporting columns (31) are connected to the base (1).

5. The denitration tower for boiler flue gas purification according to claim 1, wherein the bottom end of the mounting frame (12) is symmetrically connected with rollers (13), the inner bottom wall of the base (1) is symmetrically provided with sliding grooves (14), and the rollers (13) are in sliding connection with the sliding grooves (14).

6. The denitration tower for boiler flue gas purification treatment according to claim 1, wherein one end of the base (1) is connected with an air inlet (8), the air inlet (8) is communicated with the negative pressure fan (6) through a conduit, and the outside of the air inlet (8) is provided with a thread.

7. The denitration tower for boiler flue gas purification treatment according to claim 1, wherein an access door (11) is connected to one end of the base (1), and a sealing rubber ring is arranged outside the access door (11).