CN219223421U

CN219223421U - Flue gas waste heat recovery heat exchanger

Info

Publication number: CN219223421U
Application number: CN202320264568.9U
Authority: CN
Inventors: 张晓萌; 程明辉
Original assignee: Zhejiang Institute of Special Equipment Science
Current assignee: Zhejiang Institute of Special Equipment Science
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-06-20
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a flue gas waste heat recovery heat exchanger, which comprises a recovery box, wherein a flue gas inlet pipe and a flue gas outlet pipe are fixedly connected to the side wall of the recovery box, the flue gas inlet pipe and the flue gas outlet pipe penetrate through the side wall of the recovery box, the flue gas inlet pipe and the flue gas outlet pipe are symmetrically arranged, a plurality of heat exchange pipes are fixedly connected to the side wall between the flue gas inlet pipe and the flue gas outlet pipe, the plurality of heat exchange pipes are positioned in the recovery box, and a water inlet pipe and a water outlet pipe are fixedly connected to the side wall of the recovery box. The utility model improves the recovery effect of the waste heat of the flue gas and simultaneously purifies the flue gas.

Description

Flue gas waste heat recovery heat exchanger

Technical Field

The utility model relates to the technical field of boiler flue gas waste heat recovery, in particular to a flue gas waste heat recovery heat exchanger.

Background

Due to the shortage of energy, various novel and energy-saving advanced furnaces are gradually perfected along with the further development of energy-saving work, and the heat dissipation loss of the furnace is obviously reduced after the novel refractory fiber and other high-quality heat preservation materials are adopted, however, the technology for reducing the heat loss of discharged smoke and recovering the waste heat of flue gas is still not fast developed, so that the aim of saving energy and reducing consumption is further achieved for further improving the heat efficiency of the furnace, the recovery of the waste heat of flue gas is also an important energy-saving way, and the recovery of the waste heat of flue gas mainly converts the heat carried by the flue gas into the heat which can be utilized in a certain heat exchange mode.

For example, chinese patent application No. 202221184947.9 relates to a flue gas waste heat recovery heat exchanger, which has a conversion box, wherein one side of the conversion box is provided with an air inlet pipe, and the other side of the conversion box is provided with an air outlet pipe; one or more groups of heat exchange pipes are arranged in the conversion box body from top to bottom, and the heat exchange pipes are all communicated from top to bottom; the lower part of the conversion box body is provided with a heat exchange box body, the heat exchange box body is internally and horizontally provided with a separation plate, and two sides of the upper part of the separation plate are respectively provided with a cold air inlet pipe and a hot air outlet pipe; one end of the cold air inlet pipe and one end of the hot air outlet pipe sequentially pass through the heat exchange box body and the conversion box body and then are connected with the heat exchange pipe.

However, in the above scheme, most of boilers use coal or petroleum as fuel, and harmful substances such as smoke dust generated by burning the fuel are discharged into the atmosphere in large quantity, so that serious pollution is caused to the surrounding environment, the health of human bodies is threatened, and the growth of surrounding crops and trees is affected, so that the harmful substances can be discharged only after purification, and in order to solve the problems, a flue gas waste heat recovery heat exchanger is designed.

Disclosure of Invention

The utility model provides a flue gas waste heat recovery heat exchanger to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a flue gas waste heat recovery heat exchanger, includes the collection box, fixedly connected with advances chimney and play chimney on the lateral wall of collection box, advance the chimney with go out the chimney runs through the lateral wall of collection box, advance the chimney with it is the symmetry setting to go out the chimney, advance the chimney with lateral wall fixedly connected with a plurality of heat exchange tubes between the chimney, a plurality of the heat exchange tube is located the collection box, fixedly connected with inlet tube and outlet pipe on the lateral wall of collection box.

As a further improvement scheme of the technical scheme: one end fixedly connected with dust removal case of play chimney, fixedly connected with a plurality of filter screens on the inside lateral wall of dust removal case, fixedly connected with conveyer pipe on the lateral wall of dust removal case, the one end fixedly connected with purification tank of prime number conveyer pipe, fixedly connected with outlet duct and drain pipe on the lateral wall of purification tank, be equipped with stirring subassembly on the purification tank.

As a further improvement scheme of the technical scheme: the stirring assembly comprises a motor, the fixed connection of motor is in on the lateral wall of purifying tank, the motor is perpendicular downward setting, the output of motor runs through the lateral wall of purifying tank and fixedly connected with bull stick, fixedly connected with a plurality of puddlers on the lateral wall of bull stick.

As a further improvement scheme of the technical scheme: valves are arranged on the water inlet pipe, the water outlet pipe and the liquid outlet pipe.

As a further improvement scheme of the technical scheme: one end of the conveying pipe is fixedly connected with a grid.

As a further improvement scheme of the technical scheme: the bottom side wall of the dust removing box is hinged with a box door.

As a further improvement scheme of the technical scheme: the diameters of a plurality of filter screen meshes sequentially decrease from left to right.

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

through a plurality of heat exchange tubes that are crooked spiral setting that set up, form route and the area of contact that increases the heat transfer of cigarette can be prolonged, can delete the dust in the flue gas after the cooling through the dust proof case, through the chemical reaction liquid mixed reaction in with the purification tank, reject the harmful substance in the flue gas, this device has improved the recovery effect of flue gas waste heat, has purified the flue gas simultaneously.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings. Specific embodiments of the present utility model are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic perspective view of a flue gas waste heat recovery heat exchanger according to the present utility model;

fig. 2 is a schematic diagram of a front cross-sectional structure of a flue gas waste heat recovery heat exchanger according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a recovery box; 2. a smoke inlet tube; 3. a smoke outlet tube; 4. a water outlet pipe; 5. a water inlet pipe; 6. a heat exchange tube; 7. a dust removal box; 8. a filter screen; 9. a door; 10. a delivery tube; 11. a purification tank; 12. a motor; 13. a rotating rod; 14. a stirring rod; 15. an air outlet pipe; 16. a liquid outlet pipe; 17. a grid; 18. and (3) a valve.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, in an embodiment of the utility model, a flue gas waste heat recovery heat exchanger comprises a recovery box 1, a flue gas inlet pipe 2 and a flue gas outlet pipe 3 are fixedly connected to the side wall of the recovery box 1, the flue gas inlet pipe 2 and the flue gas outlet pipe 3 penetrate through the side wall of the recovery box 1, the flue gas inlet pipe 2 and the flue gas outlet pipe 3 are symmetrically arranged, a plurality of heat exchange pipes 6 are fixedly connected to the side wall between the flue gas inlet pipe 2 and the flue gas outlet pipe 3, the plurality of heat exchange pipes 6 are located in the recovery box 1, and a water inlet pipe 5 and a water outlet pipe 4 are fixedly connected to the side wall of the recovery box 1.

Referring to fig. 1, one end of the smoke outlet tube 3 is fixedly connected with a dust removing box 7, a plurality of filter screens 8 are fixedly connected to the inner side wall of the dust removing box 7, a conveying pipe 10 is fixedly connected to the side wall of the dust removing box 7, one end of the prime conveying pipe 10 is fixedly connected with a purifying tank 11, an air outlet pipe 15 and an air outlet pipe 16 are fixedly connected to the side wall of the purifying tank 11, a stirring assembly is arranged on the purifying tank 11, and the flue gas is purified, so that the discharged flue gas is harmless and environment-friendly.

Referring to fig. 2, the stirring assembly includes a motor 12, the motor 12 is fixedly connected to a side wall of the purification tank 11, the motor 12 is vertically and downwardly arranged, an output end of the motor 12 penetrates through the side wall of the purification tank 11 and is fixedly connected with a rotating rod 13, and a plurality of stirring rods 14 are fixedly connected to the side wall of the rotating rod 13, so that the mixing reaction of the reaction solution and the flue gas is more complete.

Referring to fig. 2, valves 18 are respectively provided on the water inlet pipe 5, the water outlet pipe 4 and the liquid outlet pipe 16 to control the water inlet pipe 5, the water outlet pipe 4 and the liquid outlet pipe 16 to be opened and closed.

Referring to fig. 2, a mesh 17 is fixedly connected to one end of the delivery tube 10. Preventing the liquid from entering the delivery pipe 10 and becoming large bubbles, which would interfere with the reaction of the flue gas and the reaction liquid.

Referring to fig. 2, a box door 9 is hinged to a bottom side wall of the dust removal box 7, dust blocked by the filter screen 8 falls onto the box door 9, and dust in the dust removal box can be cleaned by opening and closing the box door 9.

Referring to fig. 2, the mesh diameters of the filter screens 8 sequentially decrease from left to right, and dust with different sizes in the flue gas is gradually removed.

The working principle of the utility model is as follows: firstly, water is injected into a recovery box 1 through a water inlet pipe 5, flue gas enters a heat exchange pipe 6 from a smoke inlet pipe 2, scalding hot flue gas flows in the heat exchange pipe 6, heat is transferred to water, the water is heated, the water is discharged from a water outlet pipe 4 for reuse after reaching a certain temperature, then water is injected into the recovery box 1, the circulating flow of the water is heated, the flue gas after cooling enters a dust removal box 7, dust in the flue gas is filtered out by a filter screen 8 and then enters a purification tank 11, chemical reaction liquid is added inwards through an air outlet pipe 15, a motor 12 is started, the output end of the motor 12 rotates, a rotating rod 13 and a stirring rod 14 are driven to rotate, metal substances in the flue gas and the chemical reaction liquid are fully stirred for reaction, then the water is discharged from an air outlet pipe 15, and the used reaction liquid is discharged through a liquid outlet pipe 16.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way; those skilled in the art will readily appreciate that the present utility model may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present utility model are possible in light of the above teachings without departing from the scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the present utility model.

Claims

1. The utility model provides a flue gas waste heat recovery heat exchanger, includes collection box (1), its characterized in that, fixedly connected with advances chimney (2) and play chimney (3) on the lateral wall of collection box (1), advance chimney (2) with go out chimney (3) run through the lateral wall of collection box (1), advance chimney (2) with go out chimney (3) and be the symmetry setting, advance chimney (2) with go out lateral wall fixedly connected with a plurality of heat exchange tubes (6) between chimney (3), a plurality of heat exchange tube (6) are located collection box (1), fixedly connected with inlet tube (5) and outlet pipe (4) on the lateral wall of collection box (1).

2. The flue gas waste heat recovery heat exchanger according to claim 1, wherein one end of the flue gas outlet tube (3) is fixedly connected with a dust removal box (7), a plurality of filter screens (8) are fixedly connected to the inner side wall of the dust removal box (7), a conveying pipe (10) is fixedly connected to the side wall of the dust removal box (7), one end of the prime number conveying pipe (10) is fixedly connected with a purifying tank (11), an air outlet pipe (15) and a liquid outlet pipe (16) are fixedly connected to the side wall of the purifying tank (11), and a stirring assembly is arranged on the purifying tank (11).

3. The flue gas waste heat recovery heat exchanger according to claim 2, wherein the stirring assembly comprises a motor (12), the motor (12) is fixedly connected to the side wall of the purification tank (11), the motor (12) is vertically downwards arranged, the output end of the motor (12) penetrates through the side wall of the purification tank (11) and is fixedly connected with a rotating rod (13), and a plurality of stirring rods (14) are fixedly connected to the side wall of the rotating rod (13).

4. A flue gas waste heat recovery heat exchanger according to claim 1, wherein valves (18) are arranged on the water inlet pipe (5), the water outlet pipe (4) and the liquid outlet pipe (16).

5. A flue gas waste heat recovery heat exchanger according to claim 2, wherein one end of the conveying pipe (10) is fixedly connected with a grid (17).

6. The flue gas waste heat recovery heat exchanger according to claim 2, wherein a box door (9) is hinged on the bottom side wall of the dust removal box (7).

7. A flue gas waste heat recovery heat exchanger according to claim 2, wherein the mesh diameters of a plurality of said filter screens (8) become smaller in sequence from left to right.