CN219244342U

CN219244342U - Boiler flue gas waste heat utilization device

Info

Publication number: CN219244342U
Application number: CN202320491868.0U
Authority: CN
Inventors: 祝剑峰; 杨峰; 祝钧鹏; 祝剑列; 蒋海燕
Original assignee: Dongyang Tean Boiler Co ltd
Current assignee: Dongyang Tean Boiler Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-23
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a boiler flue gas waste heat utilization device, and relates to the technical field of boilers. Comprising the following steps: a heat exchange box; the heat exchange pipe assembly is arranged in the heat exchange box and exchanges heat with the flue gas through water in the heat exchange box; and the stirring mechanism is arranged in the heat exchange box and is used for disturbing water, so that the heat exchange efficiency of the water and hot flue gas in the heat exchange pipe assembly is improved. The smoke passing through the second connecting pipe is split through the transverse pipe and then discharged through the smoke discharging hole, dust in the smoke is remained in water in the process of rising in water, so that the purification effect of the smoke is improved, the smoke filtered by the water filtering box moves upwards, at the moment, the spray head is started, the water mist contacts with other micro dust particles in the smoke and wraps the particles, so that the particles are separated from the smoke again, and the purification effect of the smoke is further improved.

Description

Boiler flue gas waste heat utilization device

Technical Field

The utility model relates to the technical field of boilers, in particular to a boiler flue gas waste heat utilization device.

Background

At present, the existing industrial boilers in the market generally recover the generated waste heat when in use.

The Chinese patent publication No. CN218001552U discloses a boiler flue gas waste heat utilization device, which can remove dust in the flue gas while recovering waste heat of high-temperature flue gas through the cooperation of an air outlet pipe, a partition plate, a filter screen, a driving motor, a transmission mechanism, a rotary drum, an air cavity, a scraper, a fan, a filter box and an air inlet pipe.

The technical problem that the environment is affected after dust in the flue gas cannot be removed when the waste heat of the flue gas of the existing boiler is recovered by the waste heat utilization device of the flue gas is solved. However, the above-mentioned scheme still has certain problem in practical application, for example, above-mentioned device is provided with crooked flue gas pipeline at the top of heat collection case and increases the heat transfer area of flue gas and water, but the water in the above-mentioned heat collection case is the state of standing to make heating time longer, heat exchange efficiency is not high, in addition, above-mentioned device filters the dust in the flue gas through the filter screen, because the filter screen has the hole of air circulation, thereby can filter big dust granule, like this, still there is a certain amount of tiny dust granule in the exhaust flue gas, thereby make the flue gas filter effect of above-mentioned device not good. For this reason, a boiler flue gas waste heat utilization device is proposed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a boiler flue gas waste heat utilization device to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: boiler flue gas waste heat utilization device includes:

a heat exchange box;

the heat exchange pipe assembly is arranged in the heat exchange box and exchanges heat with the flue gas through water in the heat exchange box;

the stirring mechanism is arranged in the heat exchange box and used for disturbing water, so that the heat exchange efficiency of the water and hot flue gas in the heat exchange pipe assembly is improved;

the reticular filtering device is arranged at one side of the heat exchange box and connected with the heat exchange tube assembly to filter dust in the flue gas;

the water filtering device is arranged on one side of the net-shaped filtering device and is communicated with the net-shaped filtering device through a second connecting pipe, so that the smoke is dissolved in water.

Preferably, the heat exchange tube assembly includes:

the device comprises a smoke inlet pipe, a smoke outlet pipe, two vertical pipes and a plurality of bending pipes;

the two vertical pipes are fixedly communicated with a smoke inlet pipe and a smoke outlet pipe which are positioned in the heat exchange box respectively;

the bending pipe is positioned between the two vertical pipes and fixedly communicated with the vertical pipes.

Preferably, the stirring mechanism comprises:

the stirring device comprises a rotating shaft, stirring paddles, fixed wheels, a belt and a motor;

the stirring paddles are arranged in a plurality of ways and fixed on the shaft body of the rotating shaft, and the rotating shaft is in rolling connection with the heat exchange box;

the end parts of the output ends of the rotating shaft body and the motor, which extend out of the heat exchange box, are respectively fixed with a fixed wheel;

the belt is connected with the fixed wheel in a sliding way.

Preferably, the mesh filter device comprises a mesh filter box, and a plurality of filter screens are fixed on the inner wall of the mesh filter box.

Preferably, the water filtering device comprises a water filtering box and a plurality of transverse pipes, wherein the transverse pipes are fixedly communicated with the second connecting pipes, and a plurality of smoke exhaust holes are formed in the tops of the transverse pipes;

the top of the water filter tank is fixedly communicated with an exhaust pipe.

Preferably, the top of the water filtering box is also fixed with a liquid inlet pipe, and the bottom of the liquid inlet pipe positioned in the water filtering box is fixedly communicated with a plurality of spray heads.

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

according to the boiler flue gas waste heat utilization device, the contact area between the hot flue gas in the bent pipe and water is increased, namely, the flue gas passing through the bent pipe can be fully contacted with the water in the heat exchange box, so that the heat exchange efficiency is improved, the water flow speed in the heat exchange box is improved through the arrangement of the stirring device, the heat exchange of the water can be rapidly carried out, and the heat exchange efficiency is further improved;

in addition, still be provided with water filter equipment, feed liquor pipe and shower nozzle, the flue gas through the second connecting pipe shunts through horizontal pipe, then discharges through the exhaust port, the in-process that the flue gas risees in water, the dust in the flue gas remains in water, thereby the purifying effect of flue gas has been increased, the flue gas after filtering through the water rose box upwards moves, the shower nozzle opens this moment, the water smoke contacts and wraps up with all the other miniature dust particles in the flue gas, thereby make granule and flue gas separate once more, and then further improved the purifying effect of flue gas.

Drawings

FIG. 1 is a right side elevational view of the present utility model;

FIG. 2 is a left side view of the present utility model;

FIG. 3 is a semi-sectional view of the heat exchange box of the present utility model;

FIG. 4 is a semi-sectional view of the water filtration device of the present utility model.

In the figure: 1. a heat exchange box; 101. a smoke inlet pipe; 102. a smoke outlet pipe; 2. a mesh filter device; 3. a water filtration device; 301. a second connection pipe; 302. a transverse tube; 303. a smoke vent; 304. an exhaust pipe; 401. a vertical pipe; 402. bending the tube; 5. a stirring mechanism; 501. a rotating shaft; 502. stirring paddles; 503. a fixed wheel; 504. a belt; 505. a motor; 601. a liquid inlet pipe; 602. a spray head.

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.

The boiler of non-electric heating can produce the flue gas when using, because the temperature is higher in the flue gas, generally need carry out heat recovery to the flue gas, but the dust in the flue gas can not be better clear up after current boiler flue gas waste heat utilization device carries out waste heat recovery to influence the environment, therefore this utility model provides a technical scheme: a boiler flue gas waste heat utilization device.

As shown in fig. 1-3, the apparatus includes:

the device comprises a heat exchange box 1, a heat exchange pipe assembly, a stirring mechanism 5, a net-shaped filtering device 2 and a water filtering device 3;

the heat exchange tube assembly is arranged in the heat exchange box 1, and exchanges heat with the flue gas through water in the heat exchange box 1;

the stirring mechanism 5 is arranged in the heat exchange box 1 and is used for disturbing water, so that the heat exchange efficiency of the water and hot flue gas in the heat exchange pipe assembly is improved;

the reticular filtering device 2 is arranged at one side of the heat exchange box 1 and connected with the heat exchange tube assembly, and is used for filtering dust in the flue gas;

the water filter 3 is disposed at one side of the mesh filter 2 and is connected to the mesh filter 2 through a second connection pipe 301 to dissolve the smoke in the water.

The above-mentioned related pipes for water circulation in the heat exchange tank 1 and in the water filtering device 3 are all of the prior art, and those skilled in the art will be aware of the same, and are not numbered in the figures.

To achieve the waste heat utilization of the high temperature flue gas, as shown in fig. 1 and 3, the heat exchange tube assembly includes:

the number of the bent pipes 402 is not particularly limited, and the smoke inlet pipe 101, the smoke outlet pipe 102, the two vertical pipes 401 and the plurality of bent pipes 402;

the two vertical pipes 401 are fixedly communicated with the smoke inlet pipe 101 and the smoke outlet pipe 102 which are positioned in the heat exchange box 1 respectively;

the bending tube 402 is located between two vertical tubes 401, and the bending tube 402 is arranged in a superimposed manner and fixedly communicated with the vertical tubes 401.

By the arrangement, the contact area between the hot flue gas in the bent pipe 402 and water is increased, namely, the flue gas passing through the bent pipe 402 can be fully contacted with the water in the heat exchange box 1, so that the heat exchange efficiency is improved.

To further improve the heat exchange efficiency between the hot flue gas and water, as shown in fig. 3, the stirring mechanism 5 includes:

a rotating shaft 501, a stirring paddle 502, a fixed wheel 503, a belt 504 and a motor 505;

wherein, the stirring paddle 502 is provided with a plurality of stirring paddles, which are fixed on the shaft body of the rotating shaft 501, and it can be known that the rotating shaft 501 is in rolling connection with the heat exchange box 1;

the shaft body of the rotating shaft 501 extending out of the heat exchange box 1 and the end part of the output end of the motor 505 are both fixed with a fixed wheel 503;

it should be appreciated that the belt 504 is slidably coupled to the fixed sheave 503.

In addition, a plurality of stirring mechanisms 5 can be provided, so that stirring can be performed simultaneously under the drive of the motor 505, thereby improving the water flow speed in the heat exchange box 1, rapidly performing heat exchange of water, and further improving the heat exchange efficiency.

Specifically, after the motor 505 is started, the motor 505 and the belt 504 are arranged to enable the plurality of fixed wheels 503 to rotate, so as to enable the rotation shaft 501 and the stirring paddle 502 to rotate.

For filtering flue gas, in this scheme, netted filter equipment 2 includes netted rose box, and netted rose box inner wall is fixed with a plurality of filter screen, and this is prior art, and this is not repeated here.

In order to more fully filter the flue gas filtered by the mesh-type filter device 2 and reduce the discharge amount of tiny dust particles in the flue gas and the flue gas together, and further purify the flue gas, as shown in fig. 4, the water filter device 3 comprises a water filter box and a plurality of transverse pipes 302, the transverse pipes 302 are fixedly communicated with the second connecting pipes 301, it can be known that the transverse pipes 302 are positioned at the bottom of the water filter box, and a plurality of smoke discharge holes 303 are formed at the top of the transverse pipes 302;

specifically, the flue gas passing through the second connection pipe 301 is split through the transverse pipe 302 and then discharged through the smoke discharge hole 303, and in the process that the flue gas rises in water, dust in the flue gas remains in the water, so that the purifying effect of the flue gas is increased.

Further, as shown in fig. 4, a liquid inlet pipe 601 is further fixed at the top of the water filtering tank, and a plurality of spray heads 602 are fixedly communicated with the bottom of the liquid inlet pipe 601 in the water filtering tank, and the spray heads 602 are preferably water mist spray heads.

Specifically, the flue gas filtered through the water filter box moves upwards, and at this moment, the nozzle 602 is opened, and the water mist contacts with other miniature dust particles in the flue gas and wraps the miniature dust particles, so that the particles are separated from the flue gas again, and the purifying effect of the flue gas is further improved.

And the top of the water filter tank is fixedly communicated with an exhaust pipe 304, and the purified flue gas is discharged through the exhaust pipe 304.

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 hereto without departing from the spirit and scope of the utility model as defined by the appended embodiments and equivalents thereof.

Claims

1. Boiler flue gas waste heat utilization equipment, its characterized in that includes:

a heat exchange box (1);

the heat exchange tube assembly is arranged in the heat exchange box (1) and exchanges heat with the flue gas through water in the heat exchange box (1);

the stirring mechanism (5) is arranged in the heat exchange box (1) and used for disturbing water, so that the heat exchange efficiency of the water and hot flue gas in the heat exchange pipe assembly is improved;

the reticular filtering device (2) is arranged at one side of the heat exchange box (1) and is connected with the heat exchange pipe assembly to filter dust in the flue gas;

the water filtering device (3) is arranged on one side of the net-shaped filtering device (2) and is communicated with the net-shaped filtering device (2) through a second connecting pipe (301) to dissolve the flue gas in water.

2. The boiler flue gas waste heat utilization device according to claim 1, wherein the heat exchange tube assembly comprises:

a smoke inlet pipe (101), a smoke outlet pipe (102), two vertical pipes (401) and a plurality of bending pipes (402);

the two vertical pipes (401) are fixedly communicated with a smoke inlet pipe (101) and a smoke outlet pipe (102) which are positioned in the heat exchange box (1) respectively;

the bending tube (402) is positioned between the two vertical tubes (401) and is fixedly communicated with the vertical tubes (401).

3. The boiler flue gas waste heat utilization device according to claim 1, wherein the stirring mechanism (5) comprises:

a rotating shaft (501), stirring paddles (502), a fixed wheel (503), a belt (504) and a motor (505);

the stirring paddles (502) are arranged in a plurality and fixed on the shaft body of the rotating shaft (501), and the rotating shaft (501) is in rolling connection with the heat exchange box (1);

the end parts of the output ends of the rotating shaft (501) and the motor (505) extending out of the heat exchange box (1) are respectively fixed with a fixed wheel (503);

the belt (504) is in sliding connection with the fixed wheel (503).

4. The boiler flue gas waste heat utilization device according to claim 1, wherein the mesh-shaped filtering device (2) comprises a mesh-shaped filtering box, and a plurality of filtering screens are fixed on the inner wall of the mesh-shaped filtering box.

5. The boiler flue gas waste heat utilization device according to claim 1, wherein the water filtering device (3) comprises a water filtering box and a plurality of transverse pipes (302), the transverse pipes (302) are fixedly communicated with the second connecting pipes (301), and a plurality of smoke exhaust holes (303) are formed in the tops of the transverse pipes (302);

the top of the water filtering box is fixedly communicated with an exhaust pipe (304).

6. The boiler flue gas waste heat utilization device according to claim 5, wherein the top of the water filter tank is further fixed with a liquid inlet pipe (601), and a plurality of spray heads (602) are fixedly communicated with the bottom of the liquid inlet pipe (601) in the water filter tank.