CN216114780U

CN216114780U - Low-temperature flue gas waste heat recycling technology

Info

Publication number: CN216114780U
Application number: CN202120831040.6U
Authority: CN
Inventors: 鲁文彬
Original assignee: Lanzhou New Area Shuangliang Thermal Power Co ltd
Current assignee: Lanzhou New Area Shuangliang Thermal Power Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-03-22
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a low-temperature flue gas waste heat recycling technology which comprises a flue gas exhaust pipeline, wherein a heat collector is arranged in the flue gas exhaust pipeline, the heat collector consists of a first heat collector unit, a second heat collector unit and a third heat collector unit, a first heat collecting disc and a second heat collecting disc are respectively arranged in the first heat collector unit, the second heat collector unit and the third heat collector unit, and a heat collecting pipe is arranged between the first heat collecting disc and the second heat collecting disc in a penetrating manner. According to the utility model, the heat collector consists of the first heat collector unit, the second heat collector unit and the third heat collector unit, the heat collector is designed in a modular manner, so that the heat collector is convenient to transport, and is also favorable for maintenance and replacement of the heat collector.

Description

Low-temperature flue gas waste heat recycling technology

Technical Field

The utility model relates to the technical field of waste heat recovery, in particular to a low-temperature flue gas waste heat recovery and utilization technology.

Background

The waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the energy consumption device of the put-in-operation industrial enterprise due to the limitations of factors such as history, technology, concept and the like. The method comprises the steps of high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like. According to investigation, the total waste heat resources of all industries account for 17% -67% of the total fuel consumption, and the recyclable waste heat resources account for 60% of the total waste heat resources. Low temperature flue gas waste heat recovery utilizes technique, mainly be in order furthest to reduce the boiler and discharge fume the loss, excavate and promote fuel integrated utilization, actively respond national energy saving and emission reduction call, reduce enterprise manufacturing cost, promote heating capacity and propose, but current waste heat equipment, it has the heat collector to carry out the heat transfer to generally all to discharge fume pipeline internally mounted, but traditional heat collector is general all an organic whole form, and is bulky, the transportation of not being convenient for, when the heat collector damages simultaneously, need change whole heat collector, thereby improve its manufacturing cost.

Therefore, a low-temperature flue gas waste heat recycling technology is provided to solve the defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, the existing waste heat equipment is generally provided with a heat collector arranged in a smoke exhaust pipeline for heat exchange, but the traditional heat collector is generally in an integrated form, has large volume and is inconvenient to transport, and meanwhile, when the heat collector is damaged, the whole heat collector needs to be replaced, so that the manufacturing cost is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme: low temperature flue gas waste heat recovery utilizes technique, including the exhaust pipe, exhaust pipe internally mounted has the heat taker, the heat taker comprises first heat taker unit, second heat taker unit and third heat taker unit, first heat taker unit, second heat taker unit and third heat taker unit are inside to be provided with first heat taker dish and second heat taker dish respectively, it is provided with the heat taker pipe to link up between first heat taker dish and the second heat taker dish, first heat taker dish and second heat taker dish surface are provided with the connecting pipe, the second heat taker unit both ends are passed through flange and are connected with first heat taker unit and third heat taker unit.

Preferably, the shunt tubes are arranged on the surfaces of the second heat taking discs inside the first heat taking unit, the second heat taking unit and the third heat taking unit, the surfaces of the shunt tubes are provided with nozzles, and the surfaces of the other sides of the shunt tubes are connected with an external water source.

Preferably, the connecting pipe of the first heat extraction unit end is connected with the water inlet pipe through a connecting flange, one end of the water inlet pipe is connected with the water supply system, the connecting pipe of the third heat extraction unit end is connected with the water outlet pipe through a connecting flange, the heat pump unit is installed at one end of the water outlet pipe, and the heat pump unit is a hot water drive absorption type heat pump unit.

Preferably, the nozzle is provided with a plurality of nozzles, and the plurality of nozzles are equidistantly arranged on the surface of the shunt pipe in a surrounding mode.

Preferably, the heat extraction pipe is of an annular structure.

Preferably, a liquid discharge pipe is arranged on the surface of the smoke exhaust pipeline in a penetrating mode.

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

1. in the utility model, the heat collector consists of a first heat collecting unit, a second heat collecting unit and a third heat collecting unit, the modular design of the heat collector is convenient for transporting the heat collector and is also beneficial to the maintenance and replacement of the heat collector, when the heat collector is damaged, a worker only needs to replace the damaged heat collecting unit in the heat collector, the mode is simple to operate, the mode of the integrated design of the traditional heat collector is changed, the utilization rate of the heat collector is improved, secondly, the air inlets of the first heat taking unit, the second heat taking unit and the third heat taking unit are provided with flow dividing pipes, the surfaces of the flow dividing pipes are provided with nozzles, through the cooperation use of shunt tubes and nozzle, be convenient for make external water source pass through the nozzle blowout, later clear up the inside heat pipe of getting of heat collector, avoid getting the influence heat transfer of heat pipe surface deposition and block up the flue.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a low-temperature flue gas waste heat recycling technology provided by the utility model;

FIG. 2 is a schematic view of a heat extraction pipe of the low-temperature flue gas waste heat recovery technology provided by the utility model;

fig. 3 is a schematic view of a nozzle of the low-temperature flue gas waste heat recycling technology provided by the utility model.

Illustration of the drawings:

1. a smoke exhaust duct; 2. a heat collector; 3. a connecting flange; 4. a water outlet pipe; 5. a heat pump unit; 6. a first heat extraction unit; 7. a second heat extraction unit; 8. a third heat extraction unit; 9. a water supply system; 10. a water inlet pipe; 11. a connecting pipe; 12. a first heat-extracting plate; 13. taking a heat pipe; 14. a second heat-extracting plate; 15. a shunt tube; 16. a nozzle; 17. and a liquid discharge pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the low-temperature flue gas waste heat recycling technology includes a flue gas duct 1, a heat extractor 2 is installed inside the flue gas duct 1, the heat extractor 2 is composed of a first heat extractor unit 6, a second heat extractor unit 7 and a third heat extractor unit 8, a first heat extracting plate 12 and a second heat extracting plate 14 are respectively arranged inside the first heat extractor unit 6, the second heat extractor unit 7 and the third heat extractor unit 8, a heat extracting pipe 13 is arranged between the first heat extracting plate 12 and the second heat extracting plate 14 in a penetrating manner, connecting pipes 11 are arranged on the surfaces of the first heat extracting plate 12 and the second heat extracting plate 14, and two ends of the second heat extractor unit 7 are connected with the first heat extractor unit 6 and the third heat extractor unit 8 through connecting flanges 3.

In this embodiment: through 2 modular design to the heat collector, be convenient for to the transportation of heat collector 2, also be favorable to simultaneously to the maintenance and the change of heat collector 2, when heat collector 2 damages, the staff only need to the heat collector of 2 internal damage of heat collector change can, this mode easy operation changes the mode of 2 integrated designs of traditional heat collector to improve the rate of utilization to heat collector 2.

Specifically, the inside second that is located of first heat extraction unit 6, second heat extraction unit 7 and third heat extraction unit 8 has shunt tubes 15, shunt tubes 15 surface mounting has nozzle 16, shunt tubes 15 opposite side surface is connected with external water source, the connecting pipe 11 of first heat extraction unit 6 tip passes through flange 3 and is connected with inlet tube 10, inlet tube 10 one end is connected with water supply system 9, the connecting pipe 11 of third heat extraction unit 8 tip passes through flange 3 and is connected with outlet pipe 4, heat pump unit 5 is installed to outlet pipe 4 one end, and heat pump unit 5 is hot water drive absorption heat pump unit 5, nozzle 16 is provided with a plurality ofly, and a plurality of nozzles 16 equidistance encircle and install on shunt tubes 15 surfaces, exhaust pipe 1 surface link up and is provided with fluid-discharge tube 17.

In this embodiment: through the cooperation use of shunt tubes 15 and nozzle 16, be convenient for make external water source pass through the spout of nozzle 16, later clear up the inside heat pipe 13 of getting of heat collector 2, avoid getting heat pipe 13 surface deposition influence heat transfer and block up the flue, drain pipe 17 is convenient for retrieve the inside refrigerated saturated liquid of exhaust pipe 1.

The working principle is as follows: the heat collector 2 consists of a first heat collector 6, a second heat collector 7 and a third heat collector 8, the modular design of the heat collector 2 is convenient for transporting the heat collector 2 and is also beneficial for maintaining and replacing the heat collector 2, when the heat collector 2 is damaged, a worker only needs to replace the damaged heat collector unit in the heat collector 2, the operation is simple, the integrated design mode of the traditional heat collector 2 is changed, the utilization rate of the heat collector 2 is improved, secondly, a shunt tube 15 is arranged at the air inlet of the first heat taking unit 6, the second heat taking unit 7 and the third heat taking unit 8, a nozzle 16 is arranged on the surface of the shunt tube 15, through the cooperation use of shunt tubes 15 and nozzle 16, be convenient for make external water source spout through nozzle 16, later clear up the inside heat pipe 13 of getting of heat collector 2, avoid getting heat pipe 13 surface deposition influence heat transfer and block up the flue.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The low-temperature flue gas waste heat recycling technology comprises a smoke exhaust pipeline (1) and is characterized in that, a heat collector (2) is arranged in the smoke exhaust pipeline (1), the heat collector (2) consists of a first heat collector unit (6), a second heat collector unit (7) and a third heat collector unit (8), a first heat-taking plate (12) and a second heat-taking plate (14) are respectively arranged in the first heat-taking unit (6), the second heat-taking unit (7) and the third heat-taking unit (8), a heat taking pipe (13) is arranged between the first heat taking plate (12) and the second heat taking plate (14) in a penetrating way, the surfaces of the first heat-taking plate (12) and the second heat-taking plate (14) are provided with connecting pipes (11), and two ends of the second heat taking unit (7) are connected with the first heat taking unit (6) and the third heat taking unit (8) through the connecting flange (3).

2. The technology for recycling the waste heat of the low-temperature flue gas as recited in claim 1, wherein a shunt tube (15) is installed on the surface of a second heat collecting tray (14) inside the first heat collecting unit (6), the second heat collecting unit (7) and the third heat collecting unit (8), a nozzle (16) is installed on the surface of the shunt tube (15), and the other side surface of the shunt tube (15) is connected with an external water source.

3. The low-temperature flue gas waste heat recycling technology according to claim 1, wherein a connecting pipe (11) at the end of the first heat extraction unit (6) is connected with a water inlet pipe (10) through a connecting flange (3), one end of the water inlet pipe (10) is connected with a water supply system (9), a connecting pipe (11) at the end of the third heat extraction unit (8) is connected with a water outlet pipe (4) through the connecting flange (3), a heat pump unit (5) is installed at one end of the water outlet pipe (4), and the heat pump unit (5) is a hot water driven absorption heat pump unit (5).

4. The technology for recycling the waste heat of the low-temperature flue gas as recited in claim 2, wherein a plurality of nozzles (16) are provided, and the plurality of nozzles (16) are equidistantly installed around the surface of the flow dividing pipe (15).

5. The low-temperature flue gas waste heat recycling technology according to claim 1, wherein the heat taking pipe (13) is of an annular structure.

6. The low-temperature flue gas waste heat recycling technology according to claim 1, wherein a liquid discharge pipe (17) is arranged on the surface of the smoke exhaust pipeline (1) in a penetrating manner.