CN113701181A

CN113701181A - High-temperature flue gas waste heat recycling device

Info

Publication number: CN113701181A
Application number: CN202110959117.2A
Authority: CN
Inventors: 何光辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-11-26

Abstract

The invention provides a high-temperature flue gas waste heat recycling device which comprises a heat exchange box, a gas collection box and an anti-blocking injection anti-blocking mechanism, wherein the anti-blocking injection anti-blocking mechanism is used for preventing blocking, the bottom of the heat exchange box is fixedly connected with the gas collection box, the bottom of the gas collection box is fixedly connected with supporting legs, the inner wall of the heat exchange box is fixedly connected with a plurality of partition plates, and the anti-blocking injection mechanism is arranged on the partition plates and relates to the field of waste heat utilization. This high temperature flue gas waste heat recovery utilizes device is according to the easy problem of pipe blockage that current heat exchanger exists, designs the special construction that can frequently produce the water film and spray steam, intercepts a large amount of dust, and frequently washs the pipe wall to effectual general heat transfer device of having solved is difficult to go out the dirt to the flue gas that contains a large amount of dust and handles, and the pipe wall is piled up to the dust, not only influences the normal circulation of the inside flue gas of pipeline, also can cause the problem of the corrosion damage of pipeline inner wall.

Description

High-temperature flue gas waste heat recycling device

Technical Field

The invention relates to the technical field of waste heat utilization, in particular to a high-temperature flue gas waste heat recycling device.

Background

High temperature flue gases produced in some chemical plants contain a large amount of dust, including a large amount of unburned and complete carbon ash, when the high-temperature flue gas is recycled, the dust can cause the blockage and corrosion of the pipeline, at present, the recycling of the flue gas mainly uses the pipeline for heat exchange, high-temperature gas flows in the pipeline, water for heat exchange flows outside the pipeline, the heat exchange mode is common, but the flue gas in the pipeline is dry, wherein dust content is big, produces the jam easily in the low reaches of pipeline, influences the normal circulation of flue gas, and general heat transfer device is difficult to go out the dirt to the flue gas that contains a large amount of dusts and handles, and the pipe wall is piled up to the dust, not only influences the normal circulation of the inside flue gas of pipeline, also can cause the corrosion damage of pipeline inner wall, so need a high temperature flue gas waste heat recovery and utilization device.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-temperature flue gas waste heat recycling device, which solves the problems that the common heat exchange device is difficult to extinguish dust of flue gas containing a large amount of dust, and the dust is accumulated on the pipe wall, so that not only is the normal circulation of the flue gas in the pipeline influenced, but also the corrosion and the damage of the inner wall of the pipeline are caused.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a high temperature flue gas waste heat recovery utilizes device, includes heat transfer case, gas collection box and is used for preventing stifled injection anti-blocking mechanism of jam, the bottom fixedly connected with gas collection box of heat transfer case, the bottom fixedly connected with supporting leg of gas collection box, the inner wall fixedly connected with several baffle of heat transfer case, it sets up on the baffle to spray anti-blocking mechanism.

Preferably, the injection anti-blocking mechanism comprises a plurality of heat exchange vertical pipes and a plurality of injectors corresponding to the heat exchange vertical pipes, a plurality of through holes corresponding to the heat exchange vertical pipes are formed in the surface of the partition plate, the surface of each heat exchange vertical pipe is fixedly connected with the inner wall of each through hole, and one injector is arranged on each heat exchange vertical pipe.

Preferably, the structure of sprayer includes U-shaped communicating pipe, the one end of U-shaped communicating pipe is located the inside of heat transfer standpipe, the other end of U-shaped communicating pipe is located the outside of heat transfer standpipe, the equal vertical up of both ends mouth of U-shaped communicating pipe, U-shaped communicating pipe runs through baffle and heat transfer standpipe, the fixed surface of the surface of U-shaped communicating pipe and the fixed surface of heat transfer standpipe are connected.

Preferably, a plurality of slope water distribution groove has been seted up on the surface of U-shaped communicating pipe, the extension spring has been cup jointed on the surface of U-shaped communicating pipe, the top fixedly connected with magnetism of extension spring inhales the ball, magnetism inhales the ball and is located the top of U-shaped communicating pipe, the fixed surface that magnetism inhales the ball is connected with the guide ring, water distribution groove, extension spring, magnetism inhale the ball and all are located inside the heat transfer standpipe.

Preferably, the inner wall of the U-shaped communicating pipe is fixedly connected with a one-way valve, the surface of the partition plate is fixedly connected with a vibration spring, the surface of the vibration spring is fixedly connected with a plurality of fan-shaped vibration pieces, the vibration spring is sleeved on the U-shaped communicating pipe, one end of the vibration spring, which is far away from the partition plate, is fixedly connected with a vibration piece, and the vibration piece is located above the U-shaped communicating pipe.

Preferably, the bottom end of the heat exchange vertical pipe penetrates through the gas collection box and extends into the gas collection box, the surface of the gas collection box is sleeved with an exhaust pipe, and the surface of the gas collection box is in threaded connection with a water replenishing bolt.

Preferably, the top of heat transfer case has cup jointed the intake pipe, the surface of heat transfer case has cup jointed the inlet tube, the surface of heat transfer case has cup jointed the outlet pipe, the inlet tube is located the left downside of heat transfer case, the outlet pipe is located the upper right side of heat transfer case.

(III) advantageous effects

(1) The invention can generate steam frequently during heat exchange by arranging the jet anti-blocking mechanism, dust can be directly adsorbed in the pipeline, the contact surface with gas is enlarged, the dust content of the discharged gas is reduced, the pipeline is more environment-friendly, the air pressure can be gathered to generate the jet impact effect, a thin water film can be generated to jet the pipeline wall before reaching the critical value of the jet, the dust is prevented from being gathered, the moisture can be supplemented in real time, the effect is continuously kept, compared with the prior art, the dust removal effect is better, and the blockage can be prevented.

(2) According to the invention, through the arrangement of the tension spring, on one hand, the tension spring can play a role in supporting the magnetic suction ball, so that the magnetic suction ball is pulled to be tightly attached to the U-shaped communicating pipe, and sufficient pressure is generated in the U-shaped communicating pipe, and on the other hand, the tension spring can play a role in blocking the inclined water distribution tank, so that the water outlet effect of the water distribution tank is controlled.

(3) According to the invention, by arranging the structures such as the vibration spring and the vibration sheet, when water is supplemented in the U-shaped communicating pipe, the vibration sheet is promoted to drive the vibration spring to vibrate by virtue of hydromechanics, so that the fan blade on the vibration spring can fan at each part of a water layer, especially fan close to the heat exchange vertical pipe, the rapid exchange of water temperature near the heat exchange vertical pipe is promoted, the heat exchange effect is enhanced, and the heat exchange efficiency is improved.

(4) According to the invention, a special structure capable of frequently generating a water film and spraying steam is designed according to the problem that the existing heat exchanger is easy to block a pipeline, so that a large amount of dust is intercepted, and the pipeline wall is frequently cleaned, thereby effectively solving the problems that the common heat exchange device is difficult to extinguish the dust of the flue gas containing a large amount of dust, the dust is accumulated on the pipeline wall, the normal circulation of the flue gas in the pipeline is influenced, and the corrosion damage of the inner wall of the pipeline is caused.

Drawings

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

FIG. 2 is a sectional view of a heat exchange box construction of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a top view of a heat exchange standpipe structure of the present invention.

Wherein, 1 heat exchange box, 2 gas collecting box, 3 jet anti-blocking mechanism, 31 heat exchange standpipe, 32 injector, 321U-shaped communicating pipe, 322 inclined water distribution tank, 323 tension spring, 324 magnetic suction ball, 325 guide ring, 326 one-way valve, 327 vibration spring, 328 fan blade, 329 vibration blade, 33 exhaust pipe, 34 water replenishing bolt, 35 air inlet pipe, 36 water inlet pipe, 37 water outlet pipe, 4 supporting legs and 5 clapboards.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, an embodiment of the invention provides a high-temperature flue gas waste heat recycling device, which comprises a heat exchange box 1, a gas collection box 2 and an anti-blocking injection mechanism 3 for blocking prevention, wherein the gas collection box 2 is fixedly connected to the bottom of the heat exchange box 1, support legs 4 are fixedly connected to the bottom of the gas collection box 2, a plurality of partition plates 5 are fixedly connected to the inner wall of the heat exchange box 1, and the anti-blocking injection mechanism 3 is arranged on the partition plates 5.

The injection anti-blocking mechanism 3 comprises a plurality of heat exchange vertical pipes 31 and a plurality of injectors 32 corresponding to the heat exchange vertical pipes 31, the surface of the partition plate 5 is provided with a plurality of through holes corresponding to the heat exchange vertical pipes 31, the surface of each heat exchange vertical pipe 31 is fixedly connected with the inner wall of the through hole, each heat exchange vertical pipe 31 is provided with one injector 32, the structure of each injector 32 comprises a U-shaped communication pipe 321, one end of each U-shaped communication pipe 321 is positioned inside each heat exchange vertical pipe 31, the other end of each U-shaped communication pipe 321 is positioned outside each heat exchange vertical pipe 31, two ports of each U-shaped communication pipe 321 are vertically upward, each U-shaped communication pipe 321 penetrates through the partition plate 5 and the heat exchange vertical pipe 31, the surface of each U-shaped communication pipe 321 is fixedly connected with the surface of each heat exchange vertical pipe 31, the surface of each U-shaped communication pipe 321 is provided with a plurality of inclined water distribution grooves 322, the surface of each U-shaped communication pipe 321 is sleeved with a tension spring 323, the top of each tension spring 323 is fixedly connected with a magnetic suction ball 324, the magnetic suction ball 324 is positioned above the U-shaped communicating pipe 321, the surface of the magnetic suction ball 324 is fixedly connected with a guide ring 325, and the water distribution tank, the tension spring 323 and the magnetic suction ball 324 are all positioned inside the heat exchange vertical pipe 31.

The inner wall of the U-shaped communicating pipe 321 is fixedly connected with a one-way valve 326, the surface of the partition plate 5 is fixedly connected with a vibration spring 327, the surface of the vibration spring 327 is fixedly connected with a plurality of fan blades 328, the vibration spring 327 is sleeved on the U-shaped communicating pipe 321, one end of the vibration spring 327, which is far away from the partition plate 5, is fixedly connected with a vibration blade 329, and the vibration blade 329 is positioned above the U-shaped communicating pipe 321.

The bottom of heat transfer standpipe 31 runs through gas collection box 2 and extends to the inside of gas collection box 2, and the surface of gas collection box 2 has cup jointed blast pipe 33, and the surperficial threaded connection of gas collection box 2 has moisturizing bolt 34, and the top of heat transfer box 1 has cup jointed intake pipe 35, and the surface of heat transfer box 1 has cup jointed inlet tube 36, and the surface of heat transfer box 1 has cup jointed outlet pipe 37, and inlet tube 36 is located the left downside of heat transfer box 1, and outlet pipe 37 is located the upper right side of heat transfer box 1.

When the device is used, firstly water is injected into the gas collecting box 2 by unscrewing the water supplementing bolt 34, the water surface is kept not in contact with the bottom end of the heat exchange vertical pipe 31, then heat exchange cold water is injected into the heat exchange box 1 through the water inlet pipe 36, the water level reaches the water outlet pipe 37 and flows out of the water outlet pipe 37, at the moment, high-temperature flue gas enters the heat exchange box 1 through the air inlet pipe 35 and is distributed into each heat exchange vertical pipe 31, the flue gas rapidly heats the heat exchange vertical pipe 31 in the heat exchange vertical pipe 31, the cold water absorbs the heat of the heat exchange vertical pipe 31 to realize heat exchange, in the process, the U-shaped communicating pipe 321 can rapidly heat up in a high-temperature area of the heat exchange vertical pipe 31, the water level in the U-shaped communicating pipe 321 can reach the heights of two ends of the U-shaped communicating pipe 321, the magnetic ball 324 is adsorbed at one end of the U-shaped communicating pipe 321, the internal pressure of the U-shaped communicating pipe 321 is increased, the tension spring 323 can block a large amount of water in the U-shaped communicating pipe 321 from flowing out, the water in the U-shaped communication pipe 321 is ejected through the gap between the inclined water distribution groove 322 and the tension spring 323 to form a water film to flow on the inner wall of the heat exchange standpipe 31, high-temperature flue gas can flow through the water film to adsorb impurities, the water flows to be taken away, when the water in the U-shaped communication pipe 321 is continuously heated under high pressure, the magnetic absorption ball 324 can be flushed, a large amount of steam is ejected to generate a large amount of water vapor in the heat exchange standpipe 31 to further adsorb dust, and the ejected gas is also guided by the guide ring 325 to impact the inner wall of the heat exchange standpipe 31 to enhance the water vapor diffusion effect, after the pressure in the U-shaped communication pipe 321 is released, the magnetic absorption ball 324 is reset, the external water flows into the supplementary water through the other end of the U-shaped communication pipe 321 to supplement the water, the steps are repeated after the temperature is raised again, when the water is supplemented, the vibration sheet 329 is influenced by hydromechanics, the vibration sheet 329 fans up and down on the upper end of the U-shaped communication pipe 321, the vibration sheet 329 drives the fan 328 to frequently fan through the vibration spring 327, the fan blade 328 promotes the quick exchange heat of water around the heat transfer standpipe 31, enters into the inside impact surface of water of gas collection box 2 after the flue gas is removed dust and the cooling, is absorbed the dust by the surface of water again and after the cooling, discharges through blast pipe 33.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a high temperature flue gas waste heat recovery utilizes device, includes heat transfer case (1), gas collection case (2) and is used for preventing stifled injection anti-blocking mechanism (3), its characterized in that: the bottom fixedly connected with gas collection tank (2) of heat transfer case (1), the bottom fixedly connected with supporting leg (4) of gas collection tank (2), the inner wall fixedly connected with several baffle (5) of heat transfer case (1), it sets up on baffle (5) to spray anti-blocking mechanism (3).

2. The high-temperature flue gas waste heat recycling device according to claim 1, characterized in that: the spraying anti-blocking mechanism (3) comprises a plurality of heat exchange vertical pipes (31) and a plurality of sprayers (32) corresponding to the heat exchange vertical pipes (31), a plurality of through holes corresponding to the heat exchange vertical pipes (31) are formed in the surface of the partition plate (5), the surface of each heat exchange vertical pipe (31) is fixedly connected with the inner wall of each through hole, and each heat exchange vertical pipe (31) is provided with one sprayer (32).

3. The high-temperature flue gas waste heat recycling device according to claim 2, characterized in that: the structure of sprayer (32) includes U-shaped communicating pipe (321), the one end of U-shaped communicating pipe (321) is located the inside of heat transfer standpipe (31), the other end of U-shaped communicating pipe (321) is located the outside of heat transfer standpipe (31), the equal vertical up of both ends mouth of U-shaped communicating pipe (321), baffle (5) and heat transfer standpipe (31) are run through in U-shaped communicating pipe (321), the fixed surface of U-shaped communicating pipe (321) is connected with the fixed surface of heat transfer standpipe (31).

4. The high-temperature flue gas waste heat recycling device according to claim 3, characterized in that: a plurality of oblique water distribution tank (322) has been seted up on the surface of U-shaped communicating pipe (321), extension spring (323) has been cup jointed on the surface of U-shaped communicating pipe (321), ball (324) is inhaled to the top fixedly connected with magnetism of extension spring (323), ball (324) is inhaled to magnetism is located the top of U-shaped communicating pipe (321), the fixed surface of ball (324) is inhaled to magnetism is connected with guide ring (325), water distribution tank, extension spring (323), magnetism are inhaled ball (324) and all are located inside heat transfer standpipe (31).

5. The high-temperature flue gas waste heat recycling device according to claim 4, characterized in that: the inner wall fixedly connected with check valve (326) of U-shaped communicating pipe (321), the fixed surface of baffle (5) is connected with vibrations spring (327), the fixed surface of vibrations spring (327) is connected with several fan piece (328), vibrations spring (327) cover is established on U-shaped communicating pipe (321), the one end fixedly connected with vibrations piece (329) that baffle (5) were kept away from in vibrations spring (327), vibrations piece (329) are located the top of U-shaped communicating pipe (321).

6. The high-temperature flue gas waste heat recycling device according to claim 5, characterized in that: the bottom of the heat exchange vertical pipe (31) penetrates through the gas collection box (2) and extends to the inside of the gas collection box (2), the surface of the gas collection box (2) is sleeved with an exhaust pipe (33), and the surface of the gas collection box (2) is in threaded connection with a water replenishing bolt (34).

7. The high-temperature flue gas waste heat recycling device according to claim 6, characterized in that: the top of heat exchange case (1) has cup jointed intake pipe (35), inlet tube (36) have been cup jointed on the surface of heat exchange case (1), outlet pipe (37) have been cup jointed on the surface of heat exchange case (1), inlet tube (36) are located the left downside of heat exchange case (1), outlet pipe (37) are located the upper right side of heat exchange case (1).