CN219922586U

CN219922586U - Boiler flue gas semi-dry desulfurization device

Info

Publication number: CN219922586U
Application number: CN202321355281.3U
Authority: CN
Inventors: 王校; 赵强; 邓国龙; 王政; 温秦生
Original assignee: Qingdao Jiasheng Thermal Power Co ltd
Current assignee: Qingdao Jiasheng Thermal Power Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-31
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a boiler flue gas semi-dry desulfurization device, which comprises a primary cylinder, a secondary cylinder, a sprayer and a top cover, wherein a flue gas blocking device is fixedly arranged at the top end of the inner wall of the primary cylinder, the flue gas blocking device comprises a guide cover, a plug plate and a flow dividing ring, the guide cover is fixedly arranged at the top end of the inner wall of the primary cylinder, and the plug plate for blocking gas is arranged in the guide cover in a sliding manner up and down.

Description

Boiler flue gas semi-dry desulfurization device

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to a semi-dry desulfurization device for boiler flue gas.

Background

The boiler is energy conversion equipment, the energy input to the boiler is chemical energy and electric energy in fuel, the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy, the boiler generates smoke when in use, the smoke needs to be desulfurized in the discharging process, and the existing smoke desulfurization modes are divided into a dry desulfurization device, a wet desulfurization device and a semi-dry desulfurization device;

for this reason, chinese patent discloses 202222041617.0 a semi-dry flue gas desulfurizing tower, and this desulfurizing tower has set up two tangential air inlets, and after the flue gas got into, the air current direction was changed from rectilinear motion to along barrel lateral wall spiral rising, compares in the air inlet mode of current radial vertical input flue gas, avoids the flue gas to get into the inside direct impact barrel lateral wall when the flue gas that leads to of desulfurizing tower and gets into the problem of concentrated adhesion a large amount of dirt on the barrel lateral wall of impact.

Although the application meets the use requirements of users to a certain extent, certain defects still exist in the actual use process, and the specific problems are as follows, as the flue gas is not conveniently blocked inside the desulfurizing tower, the contact time of the flue gas and the spray liquid is short, and the desulfurizing efficiency in the flue gas is affected.

Disclosure of Invention

The utility model aims to provide a boiler flue gas semi-dry desulfurization device to solve the problem that flue gas desulfurization efficiency is affected due to short contact time between flue gas and spray liquid caused by the fact that flue gas is inconvenient to block in a desulfurization tower in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flue gas semi-dry desulfurization device for the boiler comprises a primary cylinder, a secondary cylinder, a sprayer and a top cover, wherein a flue gas blocking device is fixedly arranged at the top end of the inner wall of the primary cylinder, and comprises a guide cover, a plug plate and a flow dividing ring;

the air guide sleeve is fixedly arranged at the top end of the inner wall of the primary cylinder body, a plug plate with a blocking effect on gas is arranged in the air guide sleeve in a vertically sliding mode, a flow distribution ring with a flow distribution effect on the gas is arranged at the top end of the plug plate, and a cleaning assembly is fixedly arranged in the top cover.

Preferably, the smoke blocking device further comprises a spring rod, a connecting column and a positioning rod;

the spring rods are fixedly arranged at the top ends of the guide hoods, the number of the spring rods is two, the two spring rods are symmetrically arranged by the center line of the guide hoods, connecting columns are fixedly connected between the top ends of the spring rods, and positioning rods are symmetrically welded at the top ends of the connecting rods.

Preferably, the bottom end of the connecting column is fixedly connected with the top end of the plug plate, and the outer surface of the plug plate is mutually attached to the inner wall of the air guide sleeve.

Preferably, the top end of the diverter ring is welded with the bottom end of the positioning rod, and the diameter of the top end of the diverter ring is larger than that of the bottom end of the diverter ring.

Preferably, the cleaning component comprises a limit column, a rotary sleeve, an L-shaped rod and a scraping strip;

the limiting column is fixedly arranged at the bottom end of the top cover, the outer side of the limiting column is rotationally connected with a rotating sleeve, L-shaped rods are welded on the outer surface of the rotating sleeve at equal intervals, and scraping strips are welded on the top ends of the L-shaped rods.

Preferably, the outer side of the scraping strip is mutually attached to the inner wall of the top cover.

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

1. according to the utility model, the flue gas in the primary cylinder can be conveniently blocked by the flue gas blocking device, the residual time of the flue gas in the primary cylinder is increased, so that the desulfurization efficiency of the flue gas is improved, and the plug plate is adjusted in position by the gas pressure, so that the smaller the opening and closing gap between the plug plate and the guide cover is under the condition that the flue gas speed in the primary cylinder is slower, and the self-adaptive regulation effect of the exhaust speed is achieved.

2. The utility model also solves the problem of cleaning the inner wall of the top cover through the cleaning assembly, reduces the difficulty of cleaning the inside of the top cover, further improves the cleaning efficiency of the inside of the top cover, and saves the time required by cleaning the top cover.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a semi-dry desulfurization device for boiler flue gas;

FIG. 2 is a cross-sectional view of an integral primary cylinder of a semi-dry desulfurization device for flue gas of a boiler in accordance with the present utility model;

FIG. 3 is a schematic diagram of the overall flue gas blocking device of the semi-dry desulfurization device for boiler flue gas;

fig. 4 is a schematic structural view of an integral cleaning assembly of a semi-dry desulfurization device for boiler flue gas.

In the figure: 1. a first-stage cylinder; 2. a secondary cylinder; 3. a sprayer; 4. a top cover;

5. a smoke blocking device; 501. a guide cover; 502. a spring rod; 503. a connecting rod; 504. a connecting column; 505. a plug plate; 506. a positioning rod; 507. a shunt ring;

6. cleaning the assembly; 601. a limit column; 602. a rotating sleeve; 603. an L-shaped rod; 604. scraping the strip.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the boiler flue gas semi-dry desulfurization device comprises a primary cylinder 1, a secondary cylinder 2, a sprayer 3 and a top cover 4, wherein a primary flow divider is arranged in the primary cylinder 1, the secondary flow divider is arranged in the secondary cylinder 2, an air inlet is formed in one side of the primary cylinder 1, a liquid inlet is formed in the other side of the primary cylinder 1, an exhaust hole is formed in one side of the top end of the secondary cylinder 2, a flue gas blocking device 5 is fixedly arranged at the top end of the inner wall of the primary cylinder 1, and the flue gas blocking device 5 comprises a guide cover 501, a plug plate 505 and a flow dividing ring 507;

the flow guide cover 501 is fixedly arranged at the top end of the inner wall of the primary cylinder 1, the plug plate 505 with the function of blocking gas is arranged in the flow guide cover 501 in a vertically sliding manner, the flow distribution ring 507 with the function of distributing gas is arranged at the top end of the plug plate 505, and the cleaning assembly 6 is fixedly arranged in the top cover 4.

The smoke barrier device 5 further comprises a spring rod 502, a connecting rod 503, a connecting post 504 and a positioning rod 506;

spring beam 502 fixed mounting is in kuppe 501 top, and the quantity of spring beam 502 sets up to two altogether, and two spring beams 502 become symmetrical installation with the central line of kuppe 501, fixedly connected with spliced pole 504 between two spring beam 502 tops, fixedly connected with between spliced pole 504 bottom and the cock plate 505 top, and the surface of cock plate 505 and kuppe 501 inner wall laminating each other are convenient for block up kuppe 501, have reduced the jam degree of difficulty of kuppe 501, and connecting rod 503 top symmetrical welding has locating lever 506, welded connection between shunt ring 507 top and the locating lever 506 bottom, and shunt ring 507 top diameter is greater than the bottom diameter, is convenient for shunt gas, has reduced the reposition of redundant personnel degree of difficulty of gas.

The cleaning assembly 6 comprises a limit post 601, a rotary sleeve 602, an L-shaped rod 603 and a scraping strip 604;

spacing post 601 fixed mounting is in top cap 4 bottom, and spacing post 601 outside rotates and is connected with rotation cover 602, rotates cover 602 surface equidistance welding and has L type pole 603, and L type pole 603 top welding has scrapes strip 604, scrapes and laminates each other between strip 604 outside and the top cap 4 inner wall for clear up the inside top cap 4, reduced the clearance degree of difficulty of the inside of top cap 4.

Working principle: the device is in the in-service use, the absorbent enters into inside the one-level barrel 1 along the feed liquor hole, the flue gas enters into inside the one-level barrel 1 along the inlet port this moment, atomizer 3 spun fog and flue gas contact simultaneously, and the inside flue gas of one-level barrel 1 pressure is insufficient to promote the feeler plate 505 and remove this moment, the feeler plate 505 moves the time through connecting rod 503 drives spring beam 502 and stretches, the flue gas is at the inside gathering of one-level barrel 1 this moment, and make the inside pressure increase of one-level barrel 1, and bring to the feeler plate 505 when the inside gas pressure increase of one-level barrel 1 moves, make the flue gas flow along the kuppe 501 inside when the feeler plate 505 moves, the gas after flowing contacts with the diverter ring 507 of locating lever 506 bottom, the flue gas after the reposition of redundant personnel gets into inside concave second grade barrel 2, be convenient for carry out the separation to the inside flue gas of one-level barrel 1, the residual time of flue gas in one-level barrel 1 has been increased, thereby the desulfurization efficiency of flue gas has been improved, and this feeler plate 505 adjusts the position through gas, make the inside flue gas that enters into one-level barrel 1 internal velocity under the condition the flue gas pressure increase, the gap between the feeler plate 505 and the kuppe 501 has reached the self-adaptation speed that opens and shuts down.

Finally, when the top cover 4 is required to be disassembled for cleaning, only the rotating sleeve 602 is required to be rotated, the rotating sleeve 602 rotates along the outer side of the limiting column 601, and the scraping strips 604 are driven to be attached to each other along the inner wall of the top cover 4 by the L-shaped rod 603 when the rotating sleeve 602 rotates, so that the problem of cleaning the inner wall of the top cover 4 is solved, the cleaning difficulty of the inner part of the top cover 4 is reduced, the cleaning efficiency of the inner part of the top cover 4 is improved, and the problem of time required for cleaning the top cover 4 is solved.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a boiler flue gas semi-dry desulfurization device, includes one-level barrel (1), second grade barrel (2), atomizer (3) and top cap (4), its characterized in that: a smoke blocking device (5) is fixedly arranged at the top end of the inner wall of the primary cylinder (1), and the smoke blocking device (5) comprises a guide cover (501), a plug plate (505) and a flow dividing ring (507);

the air guide sleeve (501) is fixedly arranged at the top end of the inner wall of the primary cylinder body (1), a plug plate (505) with a blocking effect on gas is arranged in the air guide sleeve (501) in a vertically sliding mode, a flow distribution ring (507) with a flow distribution effect on the gas is arranged at the top end of the plug plate (505), and a cleaning assembly (6) is fixedly arranged in the top cover (4).

2. The boiler flue gas semi-dry desulfurization device according to claim 1, wherein: the smoke blocking device (5) further comprises a spring rod (502), a connecting rod (503), a connecting column (504) and a positioning rod (506);

the utility model discloses a fan, including shell, spring rod (502), connecting rod (503), positioning rod (506) and spring rod (502), spring rod (502) fixed mounting is in shell (501) top, the quantity of spring rod (502) altogether sets up to two spring rod (502) become symmetrical installation with the central line of shell (501), two fixedly connected with spliced pole (504) between spring rod (502) top, connecting rod (503) top symmetry welding has positioning rod (506).

3. A boiler flue gas semi-dry desulfurization device according to claim 2, wherein: the bottom end of the connecting column (504) is fixedly connected with the top end of the plug board (505), and the outer surface of the plug board (505) is mutually attached to the inner wall of the air guide sleeve (501).

4. A boiler flue gas semi-dry desulfurization device according to claim 2, wherein: the top end of the flow distribution ring (507) is welded with the bottom end of the positioning rod (506), and the diameter of the top end of the flow distribution ring (507) is larger than that of the bottom end.

5. The boiler flue gas semi-dry desulfurization device according to claim 1, wherein: the cleaning assembly (6) comprises a limit column (601), a rotating sleeve (602), an L-shaped rod (603) and a scraping strip (604);

the utility model discloses a scraper, including top cap (4), spacing post (601), rotation cover (602), L type pole (603) have been welded to spacing post (601) fixed mounting in top cap (4) bottom, spacing post (601) outside rotation is connected with rotation cover (602), rotation cover (602) surface equidistance, L type pole (603) top welding has scrapes strip (604).

6. The boiler flue gas semi-dry desulfurization device according to claim 5, wherein: the outer side of the scraping strip (604) is mutually attached to the inner wall of the top cover (4).