CN218295690U

CN218295690U - Boiler tail gas recycling device

Info

Publication number: CN218295690U
Application number: CN202222159211.2U
Authority: CN
Inventors: 庞永强; 向万光; 杨本军; 钟继江
Original assignee: Sichuan Dingdian Food Development Co ltd
Current assignee: Sichuan Dingdian Food Development Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-01-13
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a boiler tail gas recovery combustion utilizes device, including air-blower, tail gas recycle pipeline, natural gas and air mixer, blast pipe, boiler, moisturizing pipeline, steam conduit, dust devices such as carbon black granule, fin formula heat transfer and water trap, harmful adsorption equipment, flue gas recycle index machine and chimney, tail gas recycle pipeline swing joint is in the top of air-blower, blast pipe swing joint is in the one end of air-blower, natural gas and air mixer set up in the outside of blast pipe, boiler swing joint keeps away from the one end of air-blower in blast pipe, moisturizing pipeline swing joint is in the one end at the top of boiler. The utility model discloses in, the boiler is through disposable burning, discharges tail gas, and the tail gas heat energy does not utilize fully, installs tail gas circulating device before exhaust emissions, makes tail gas participate in the burning once more through heat exchange back part for the boiler can the energy saving, the increasing heat efficiency.

Description

Boiler tail gas recycling device

Technical Field

The utility model relates to an energy supply technical field especially relates to a boiler tail gas recovery combustion utilization device.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy, and the boiler also comprises auxiliary devices such as a framework, a platform, an escalator, combustion, slag discharge, a smoke air duct, a pipeline, a furnace wall and the like.

According to the multistage recycle device of tail gas waste heat of CN208418681U boiler according to the publication number, including the boiler, be equipped with the exhaust port on the boiler, the device still includes one-level heat recovery device and second grade heat recovery device, the utility model discloses a two-stage heat recovery device, tail gas after the boiler burning passes through one-level heat recovery device and second grade heat recovery device, and heat recovery utilization rate is high, sets up many tail gas heat pipes and packs the cooling water in the heat transfer chamber for tail gas and the abundant heat exchange of cooling water, the flow of tail gas is opposite with the flow direction of cooling water, and the cooling water heats through one-level heat recovery device earlier, and the water rethread second grade heat recovery device after the heating further heats, can obtain higher temperature, and subsequent steam generator is supplied with to the hot water of higher temperature, can save more energy.

However, the above devices still have disadvantages, and a two-stage classification recycling device is used to recycle the exhaust gas after boiler combustion, so that the exhaust gas exchanges heat with water, and the water is heated to provide a steam generator, thereby saving energy, but the exhaust gas emission temperature is higher, but the exhaust gas is used for exchanging gas and water, the provided energy is weaker, the water temperature conversion effect is poorer, only the preheating effect can be achieved, the exhaust gas contains sufficient unburnt combustion substances, the secondary combustion can be performed, and the efficiency of the secondary combustion utilization is higher than the heat exchange reaction of the exhaust gas and cooling water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the boiler tail gas emission that exists among the prior art and can't utilizing, the not abundant tail gas that leads to of burning in the boiler contains recoverable material, and the temperature that the boiler discharged is high, and the direct emission of tail gas can lead to extravagant heat energy, and pollutes atmospheric problem, and a boiler tail gas recovery combustion utilizes device that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a boiler tail gas recovery combustion utilizes device, includes air-blower, tail gas recycle pipeline, natural gas and air mixer, blast pipe, boiler, moisturizing pipeline, steam conduit, dust devices such as carbon black granule, fin formula heat transfer and water trap, harmful adsorption equipment, flue gas recycle index extension machine and chimney, tail gas recycle pipeline swing joint is in the top of air-blower, blast pipe swing joint is in the one end of air-blower, natural gas and air mixer set up in the outside of blast pipe, boiler swing joint keeps away from the one end of air-blower in the blast pipe, moisturizing pipeline swing joint is in the one end at the top of boiler, steam conduit swing joint is in the other end at the boiler top, dust devices such as carbon black granule swing joint is in the one end that the steam conduit is close to at the boiler top, fin formula heat transfer and water trap swing joint are in the one end of dust devices such as carbon black granule, flue gas recycle index extension machine swing joint is in the inside of tail gas recycle pipeline, chimney swing joint is in adsorption equipment's one end.

Preferably, the other end of the tail gas recycling pipeline is movably connected with the harmful substance adsorption device.

Preferably, the other end of the water replenishing pipeline is movably connected with the fin type heat exchange and water removal device and penetrates through the fin type heat exchange and water removal device to extend to the outside for water replenishing.

Preferably, remove dust devices such as carbon black granule include siphunculus, filter screen, suction fan, remove grained layer and dust exhaust mouth, the filter screen sets up in the inside of siphunculus, suction fan swing joint is in the bottom of siphunculus, remove grained layer movable mounting in the bottom of suction fan, dust exhaust mouth swing joint is in the bottom of removing the grained layer.

Preferably, the bottom of the natural gas and air mixer is provided with a natural gas pipeline for conveying natural gas to make the boiler burn.

Preferably, the fin type heat exchange and water removal device is internally provided with an anti-corrosion coating, so that harmful gas contained in tail gas is prevented from corroding the interior of the fin type heat exchange and water removal device and being damaged.

Preferably, harmful adsorption equipment's inside is provided with the flue, the upper and lower both ends of flue are provided with the adsorbent pipeline, prevent that harmful gas from discharging to cause destruction and the damage to the human body to the atmosphere.

Preferably, be provided with the condenser in fin formula heat transfer and the water trap, the condenser is water-cooled condenser or air-cooled condenser, the utility model discloses do not carry out any restriction to it, the condensation effect is excellent can.

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

1. the utility model discloses in, the boiler is through disposable burning, discharges tail gas, and the tail gas heat energy does not utilize fully, installs tail gas circulating device before exhaust emissions, makes tail gas participate in the burning once more through heat exchange back part for the boiler can the energy saving, the increasing heat efficiency.

2. The utility model discloses in, be provided with dust devices such as carbon black granule and harmful substance adsorption equipment, absorb the harmful gas in the tail gas, purify the back and discharge again, be favorable to reducing the pollution to the environment and the damage to the human body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a schematic view of the internal structure of the harmful substance adsorption device of the present invention;

fig. 3 is a schematic view of the internal structure of the dust removing device for removing carbon black particles and the like.

Illustration of the drawings:

1. a blower; 2. a tail gas recycling pipeline; 3. a natural gas and air mixer; 4. a blast duct; 5. a boiler; 6. a water replenishing pipeline; 7. a steam pipe; 8. a dust removing device for removing carbon black particles and the like; 9. a fin type heat exchange and water removal device; 10. a noxious substance adsorbing device; 11. smoke recycling and guiding machine; 12. a chimney; 13. a flue; 14. an adsorbent conduit; 801. pipe passing; 802. filtering with a screen; 803. a suction fan; 804. removing a particle layer; 805. a dust exhaust port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a boiler tail gas recycling, burning and utilizing device comprises an air blower 1, a tail gas recycling pipeline 2, a natural gas and air mixer 3, a blast pipeline 4, a boiler 5, a water supplementing pipeline 6, a steam pipeline 7, a dust device 8 for removing carbon black particles and the like, a fin type heat exchange and water removal device 9, a harmful substance adsorption device 10, a flue gas recycling guiding machine 11 and a chimney 12, wherein the tail gas recycling pipeline 2 is movably connected to the top of the air blower 1, the other end of the tail gas recycling pipeline 2 is movably connected with the harmful substance adsorption device 10, the blast pipeline 4 is movably connected to one end of the air blower 1, the natural gas and air mixer 3 is arranged outside the blast pipeline 4, the natural gas and air mixer 3 is provided with a natural gas pipeline at the bottom, the boiler 5 is movably connected to one end of the blast pipeline 4, which is far away from the air blower 1, the water supplementing pipeline 6 is movably connected to one end of the top of the boiler 5, the other end of the water replenishing pipeline 6 is movably connected with the fin type heat exchange and water removal device 9 and penetrates through the fin type heat exchange and water removal device 9 to extend to the outside for water replenishing, the steam pipeline 7 is movably connected with the other end of the top of the boiler 5, the dust device 8 for removing carbon black particles and the like is movably connected with one end of the top of the boiler 5 close to the steam pipeline 7, the fin type heat exchange and water removal device 9 is movably installed at one end of the dust device 8 for removing carbon black particles and the like, the fin type heat exchange and water removal device 9 is internally provided with anti-corrosion coating for preventing harmful gas contained in tail gas from corroding the inside of the fin type heat exchange and water removal device and causing damage, a condenser is arranged in the fin type heat exchange and water removal device 9, the condenser is a water-cooled condenser or an air-cooled condenser, the utility model has no limitation on the condenser, the condensing effect is excellent, and the smoke recycling extension 11 is movably connected with the inside of the tail gas recycling pipeline 2, the chimney 12 is movably connected to one end of the harmful substance adsorption device 10, a flue 13 is arranged inside the harmful substance adsorption device 10, and adsorbent pipelines 14 are arranged at the upper end and the lower end of the flue 13 to prevent harmful gas from being discharged to damage the atmosphere and the human body.

Remove dust devices 8 such as carbon black granule including siphunculus 801, filter screen 802, suction fan 803, remove grained layer 804 and dust exhaust mouth 805, filter screen 802 sets up in the inside of siphunculus 801, suction fan 803 swing joint in the bottom of siphunculus 801, remove grained layer 804 swing joint in the bottom of suction fan 803, dust exhaust mouth 805 swing joint removes the bottom of grained layer 804.

When the device is used at that time, dust in tail gas is removed through dust devices 8 such as carbon black particles in tail gas discharged by the boiler 5, supplementary water pumped into the boiler 5 is preheated through the fin type heat exchange and water removal device 9, water vapor in the tail gas is removed through condensation, harmful substances are removed through adsorption of the harmful substance removal adsorption device 10, part of tail gas is discharged, and part of tail gas containing the tail gas which is sufficient for combustion is subjected to smoke recycling and guide machine treatment device 11 and then is sent into the combustor to be combusted again.

Claims

1. The utility model provides a boiler tail gas recovery combustion utilizes device, includes air-blower (1), tail gas recovery pipeline (2), natural gas and air mixer (3), blast pipe way (4), boiler (5), moisturizing pipeline (6), steam conduit (7), dust device (8) such as carbon black granule of removing, fin formula heat transfer and water trap (9), harmful adsorption equipment (10), flue gas recovery draw extension (11) and chimney (12), its characterized in that: tail gas recycle pipeline (2) swing joint is in the top of air-blower (1), air-blast pipeline (4) swing joint is in the one end of air-blower (1), natural gas sets up in the outside at air-blast pipeline (4) with air mixer (3), the one end of air-blower (1) is kept away from in air-blast pipeline (4) boiler (5) swing joint, moisturizing pipeline (6) swing joint is in the one end at the top of boiler (5), steam conduit (7) swing joint is in the other end at boiler (5) top, remove dust device (8) swing joint such as carbon black granule in the one end that boiler (5) top is close to steam conduit (7), fin formula heat transfer and dewatering device (9) movable mounting is in the one end of removing dust device (8) such as carbon black granule, flue gas recycle draws extension (11) swing joint in the inside of tail gas recycle pipeline (2), chimney (12) swing joint is in the one end of harmful adsorption equipment (10).

2. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: the other end of the tail gas recycling pipeline (2) is movably connected with a harmful substance adsorption device (10).

3. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: the other end of the water replenishing pipeline (6) is movably connected with the fin type heat exchange and water removal device (9) and penetrates through the fin type heat exchange and water removal device (9) to extend to the outside.

4. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: remove dust devices (8) such as carbon black granule including siphunculus (801), filter screen (802), suction fan (803), remove grained layer (804) and dust exhaust mouth (805), filter screen (802) set up in the inside of siphunculus (801), suction fan (803) swing joint in the bottom of siphunculus (801), remove grained layer (804) movable mounting in the bottom of suction fan (803), dust exhaust mouth (805) swing joint in the bottom of removing grained layer (804).

5. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: and a natural gas pipeline is arranged at the bottom of the natural gas and air mixer (3).

6. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: and an anti-corrosion layer coating is arranged inside the fin type heat exchange and water removal device (9).

7. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: the interior of harmful adsorption equipment (10) is provided with flue (13), the upper and lower both ends of flue (13) are provided with adsorbent pipeline (14).

8. The boiler tail gas recycling combustion utilizing device according to claim 1, characterized in that: and a condenser is arranged in the fin type heat exchange and water removal device (9), and the condenser is a water-cooled condenser or an air-cooled condenser.