CN211739139U

CN211739139U - Paper mill thermoelectric waste heat recovery device

Info

Publication number: CN211739139U
Application number: CN201922236696.9U
Authority: CN
Inventors: 李江龙; 肖东鹏
Original assignee: Hubei Rongcheng Recycling Technology Co ltd
Current assignee: Hubei Rongcheng Recycling Technology Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-23
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a thermoelectric waste heat recovery device of a paper mill, which comprises a flue gas filtering mechanism and a waste heat utilization mechanism, wherein the gas outlet end of the flue gas filtering mechanism is connected and communicated with the gas inlet end of the waste heat utilization mechanism through a pipeline, the waste heat utilization mechanism comprises a water tank, a gas inlet main pipeline, a gas outlet main pipeline and a plurality of gas pipes, the water tank is internally hollow, the lower end of the water tank is provided with a bracket, the upper end and the lower end of the side wall of the water tank are provided with a water inlet pipe and a water outlet pipe at intervals, the gas outlet main pipeline is arranged at the upper end of the water tank through a connecting rod, the inner part of the gas outlet main pipeline is hollow, the upper end and the lower end of the gas inlet main pipeline are arranged at the lower end of the water tank through a pipeline, the plurality of the gas pipes are arranged in the, and is respectively connected and communicated with the air outlet main pipeline and the air inlet main pipeline. The utility model provides a thermoelectric waste heat recovery device of paper mill.

Description

Paper mill thermoelectric waste heat recovery device

Technical Field

The utility model relates to an exhaust-gas treatment field. More specifically, the utility model relates to a thermoelectric waste heat recovery device of paper mill.

Background

At present the paper mill mainly provides electric power through thermoelectricity when production, can produce a large amount of high temperature flue gases during thermoelectricity production, current thermal power plant waste heat recovery device, when carrying out waste heat recovery, because the area of contact of steam and water is less, lead to the uneven efficiency that influences waste heat recovery of water heating, and be the dust impurity who contains the granule when the flue gas is discharged from the thermal power plant, directly through the pipe discharge, can cause air pollution, and probably cause the jam of gas transmission pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thermoelectric waste heat recovery device of paper mill.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a thermoelectric waste heat recovery device for a paper mill comprises a flue gas filtering mechanism and a waste heat utilization mechanism, wherein the gas outlet end of the flue gas filtering mechanism is connected and communicated with the gas inlet end of the waste heat utilization mechanism through a pipeline, the waste heat utilization mechanism comprises a water tank, a main air inlet pipeline, a main air outlet pipeline and a plurality of air pipes, the water tank is hollow, a support is arranged at the lower end of the water tank, a water inlet pipe and a water outlet pipe are arranged on the side wall of the water tank at intervals up and down, the main air outlet pipeline is arranged at the upper end of the water tank through a connecting rod, the interior of the air inlet main pipeline is hollow, the upper end of the air inlet main pipeline is opened, the air inlet main pipeline is arranged at the lower end of the water tank through a connecting rod, the lower end of the hollow inner part of the water tank is connected and communicated with the air outlet end of the smoke filtering mechanism through a pipeline, a plurality of air pipes are arranged in the water tank, and the upper end and the lower end of the air inlet main pipeline are respectively penetrated out of the top wall and the bottom wall of the water tank and are respectively connected and communicated with the air outlet main pipeline and the air inlet main pipeline.

Preferably, in the device for recovering waste heat from paper mill, the air pipe is a spiral pipe.

Preferably, in the device for recovering waste heat from thermoelectricity in a paper mill, the flue gas filtering mechanism comprises a box body, an ash discharging pipe, an air inlet pipe, an air outlet pipe, a partition plate, a filter screen and a plurality of ash blocking pieces, wherein the box body is hollow, a support is arranged at the lower end of the box body, the partition plate is vertically arranged in the box body so as to divide the inner part of the box body into a first cavity and a second cavity which are mutually independent, the ash discharging pipe is vertically arranged, the upper end of the ash discharging pipe is communicated with the first cavity, the air inlet pipe and the air outlet pipe are respectively communicated with the first cavity and the second cavity, a notch is arranged on the partition plate, the filter screen is arranged at the notch, the ash blocking pieces are arranged in the first cavity at intervals from top to bottom, the ash blocking pieces are horizontally arranged, the inner part of the ash blocking piece is hollow, the upper end edge of the ash blocking piece is connected with the, the ash blocking part is gradually narrowed from the upper end to the lower end.

Preferably, a paper mill thermoelectric waste heat recovery device in, the upper end of box open have with the first bar through-hole that the filter screen corresponds, be equipped with on the roof of breach with the second bar through-hole that first bar through-hole corresponds, and be equipped with on the diapire with the recess that the filter screen lower extreme corresponds, the filter screen passes downwards in proper order first bar through-hole and second bar through-hole, its lower extreme card is established in the recess.

Preferably, in the device for recovering the thermoelectric waste heat of the paper mill, a limiting plate is horizontally arranged at the upper end of the filter screen, and the lower end of the limiting plate is attached to the upper end of the box body.

Preferably, in the device for recovering waste heat from a paper mill, projections of lower openings of any two of the dust blocking members on a horizontal plane do not coincide with each other.

The utility model discloses a waste heat recovery device at first filters the flue gas, gets rid of the back with the dust impurity among them, discharges the flue gas into waste heat utilization mechanism again, heats the water of water tank to increase heat exchange area through many helical pipeline, make the heating to the water in the water tank more even, thereby avoided the condition that water is heated the inhomogeneous efficiency that influences waste heat recovery.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a waste heat recovery device according to the present invention;

fig. 2 is a schematic structural diagram of the waste heat utilization mechanism of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and 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.

FIG. 1 is a diagram of a thermoelectric waste heat recovery device of a paper mill provided by an embodiment of the present invention, which comprises a flue gas filtering mechanism and a waste heat utilization mechanism, wherein the gas outlet end of the flue gas filtering mechanism is connected and communicated with the gas inlet end of the waste heat utilization mechanism through a pipeline, the waste heat utilization mechanism comprises a water tank 1, a gas inlet main pipeline 2, a gas outlet main pipeline 3 and a plurality of gas pipes 4, the water tank 1 is hollow inside and provided with a support at the lower end, the side wall of the water tank is provided with a water inlet pipe and a water outlet pipe at intervals up and down, the gas outlet main pipeline 3 is arranged at the upper end of the water tank 1 through a connecting rod, the gas inlet main pipeline 2 is arranged at the lower end of the water tank 1 through a connecting rod, the hollow inner end of the gas inlet main pipeline is connected and communicated with the gas outlet end of the flue gas filtering mechanism through a pipeline, and the upper and lower ends of the water tank penetrate out of the top wall and the bottom wall of the water tank 1 respectively and are connected and communicated with the air outlet main pipeline 3 and the air inlet main pipeline 2 respectively.

In this embodiment, flue gas after flue gas filtering mechanism handles, enter into main pipe 2 that admits air through the pipeline, because steam can rise automatically, flue gas in main pipe 2 that admits air enters into each trachea 4 respectively, water in the water tank 1 is heated through trachea 4, trachea 4 is the helical tube, the area of contact of trachea 4 with water has been increased, steam passes through trachea 4 and transmits the heat to aquatic, make the heating to the water in the water tank 1 more even, thereby avoided the uneven condition that influences waste heat recovery's efficiency of water heating, gaseous in the trachea 4 enters into main pipe 3 that gives vent to anger from the upper end of trachea 4 and assembles after giving vent to anger, the rethread main pipe 3 that gives vent to anger collects the processing to the gas after the heat transfer, or directly discharge to the atmosphere.

Preferably, as another embodiment of the present invention, as shown in fig. 1-2, the flue gas filtering mechanism includes a box 5, an ash discharging pipe 6, an air inlet pipe 7, an air outlet pipe 8, a partition plate 9, a filter screen 10 and a plurality of ash blocking members 11, wherein the box 5 is hollow, the lower end of the box is provided with a support, the partition plate 9 is vertically disposed in the box 5 to separate the interior of the box 5 into a first chamber and a second chamber which are independent of each other, the ash discharging pipe 6 is vertically disposed, the upper end of the ash discharging pipe is communicated with the first chamber, the air inlet pipe 7 and the air outlet pipe 8 are respectively communicated with the first chamber and the second chamber, the partition plate 9 is provided with a gap, the filter screen 10 is disposed at the gap, the ash blocking members 11 are disposed in the first chamber at intervals from top to bottom, the ash blocking members 11 are horizontally disposed, the interior of the box is hollow, and the upper and lower ends of the, the upper end edge of the ash blocking part 11 is connected with the inner wall of the first chamber, and the ash blocking part 11 gradually narrows from the upper end to the lower end.

In this embodiment, the flue gas enters into first cavity indoor back through intake pipe 7, upward movement, dust impurity in the flue gas rises thereupon, enter into the second cavity from filter screen 10 department at last, and finally enter into in the waste heat utilization mechanism through outlet duct 8, and dust impurity in the flue gas and the outer wall contact back that keeps off grey piece 11, dust impurity can be by the crotch down, fall on the inner wall of the grey piece 11 that keeps off that falls the below or directly fall on the diapire of first cavity, the dust that falls on the inner wall of the grey piece 11 that keeps off that falls the below also slowly falls on the diapire of first cavity, discharge through dust exhaust pipe 6 at last, the valve on dust exhaust pipe 6 is in the normally closed state at flue gas filter mechanism during operation.

Preferably, as the utility model discloses another embodiment, the upper end of box 5 open have with the first bar through-hole that filter screen 10 corresponds, be equipped with on the roof of breach with the second bar through-hole that first bar through-hole corresponds, and be equipped with on the diapire with the recess that the filter screen 10 lower extreme corresponds, filter screen 10 passes down in proper order first bar through-hole and second bar through-hole, its lower extreme card is established in the recess.

In this embodiment, through setting up first bar through-hole, second bar through-hole and recess, set up filter screen 10 and baffle to dismantle the connection, be convenient for like this change filter screen 10.

Preferably, as the utility model discloses another embodiment, filter screen 10 upper end level is equipped with limiting plate 12, the lower extreme of limiting plate 12 with the upper end laminating of box 5.

In this embodiment, set up limiting plate 12 in the upper end of filter screen 10, firstly fix filter screen 10 through limiting plate 12, secondly laminate through the lower extreme of limiting plate 12 and the upper end of box 5, improve the leakproofness of box 5.

Preferably, as another embodiment of the present invention, the projections of the lower end openings of any two of the dust-blocking members 11 on the horizontal plane are not overlapped.

In this embodiment, the projections of the lower end openings of any two dust blocking members 11 on the horizontal plane are not overlapped, so that the flue gas in the first cavity cannot rise straight, and under the limitation of the plurality of dust blocking members 11, the flue gas can rise in a bending manner in the first cavity, so that the dust impurities in the flue gas can be ensured to contact with the dust blocking members 11 in the rising process.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The utility model provides a thermoelectric waste heat recovery device of paper mill, includes flue gas filtering mechanism and waste heat utilization mechanism, flue gas filtering mechanism give vent to anger the end with the inlet end of waste heat utilization mechanism passes through the pipe connection and communicates, its characterized in that, waste heat utilization mechanism includes water tank (1), main inlet pipe (2), main outlet pipe (3) and many trachea (4), water tank (1) inside cavity, and its lower extreme is equipped with the support, and the upper and lower spaced is equipped with inlet tube and outlet pipe on its lateral wall, main outlet pipe (3) set up through the connecting rod in the upper end of water tank (1), its inside cavity and upper end opening, main inlet pipe (2) set up through the connecting rod at the lower extreme of water tank (1), its inside cavity lower extreme pass through the pipeline with flue gas filtering mechanism's the end of giving vent to anger is connected and communicates, many trachea (4) all set up in water tank (1), and the upper end and the lower end of the air inlet main pipeline are respectively penetrated out of the top wall and the bottom wall of the water tank (1) and are respectively connected and communicated with the air outlet main pipeline (3) and the air inlet main pipeline (2).

2. A paper mill thermoelectric waste heat recovery device according to claim 1, characterized in that the air pipe (4) is a spiral pipe.

3. The device for recovering the thermoelectric waste heat of the paper mill according to claim 1 or 2, characterized in that the flue gas filtering mechanism comprises a box body (5), an ash discharging pipe (6), an air inlet pipe (7), an air outlet pipe (8), a partition plate (9), a filter screen (10) and a plurality of ash blocking members (11), wherein the box body (5) is hollow, the lower end of the box body is provided with a support, the partition plate (9) is vertically arranged in the box body (5) to divide the interior of the box body (5) into a first cavity and a second cavity which are independent of each other, the ash discharging pipe (6) is vertically arranged, the upper end of the ash discharging pipe is communicated with the first cavity, the air inlet pipe (7) and the air outlet pipe (8) are respectively communicated with the first cavity and the second cavity, the partition plate (9) is provided with a gap, the filter screen (10) is arranged at the gap, and the ash blocking members (11) are arranged in the first cavity at intervals up and down, the ash blocking part (11) is horizontally arranged, the inner part of the ash blocking part is hollow, the upper end and the lower end of the ash blocking part are both opened, the upper end edge of the ash blocking part (11) is connected with the inner wall of the first cavity, and the ash blocking part (11) gradually narrows from the upper end to the lower end of the ash blocking part.

4. The device for recovering the thermoelectric waste heat of the paper mill according to claim 3, characterized in that a first strip-shaped through hole corresponding to the filter screen (10) is formed in the upper end of the box body (5), a second strip-shaped through hole corresponding to the first strip-shaped through hole is formed in the top wall of the notch, a groove corresponding to the lower end of the filter screen (10) is formed in the bottom wall of the notch, the filter screen (10) sequentially penetrates through the first strip-shaped through hole and the second strip-shaped through hole downwards, and the lower end of the filter screen is clamped in the groove.

5. The paper mill thermoelectric waste heat recovery device according to claim 4, wherein a limiting plate (12) is horizontally arranged at the upper end of the filter screen (10), and the lower end of the limiting plate (12) is attached to the upper end of the box body (5).

6. A paper mill thermoelectric waste heat recovery device according to claim 3, characterized in that the projections of the lower end openings of any two of said dust-blocking members (11) on the horizontal plane do not coincide.