CN207540380U - Lepidolite industrial furnace high-temperature flue gas waste-heat recovery device - Google Patents

Abstract

The utility model discloses a device for recovering waste heat from lepidolite industrial furnace high-temperature flue gas, which comprises a dust removal tower, a heat exchange tower, a smoke inlet, an absorption tank, a smoke expander, a connecting pipe, a distribution plate, a pipeline, a pump, a filter layer, and a support. Plate, first heat exchanger, first medium inlet, first medium outlet, second heat exchanger, second medium inlet, second medium outlet, collecting plate, storage tank, smoke outlet and holes. Beneficial effects of the utility model: the device is provided with a dust removal tower at the smoke inlet, and there is an absorption tank at the bottom of the dust removal tower, which can absorb dust and harmful corrosive gases in the flue gas, and also pre-cool the high-temperature flue gas after the absorption The flue gas is cooled, and the heat in the high-temperature flue gas is absorbed into the latent heat and sensible heat of the cold water, so that the temperature of the mixed gas is further reduced, and it enters the first heat exchanger and the second heat exchanger for heat exchange. , can basically recover all the heat in the high-temperature flue gas, and realize green emission.

Description

Lepidolite industrial kiln high temperature flue gas waste heat recovery device

technical field

The utility model relates to a waste heat recovery device, more precisely, it is a waste heat recovery device for lepidolite industrial kiln high-temperature flue gas.

Background technique

Lepidolite, also known as "scale mica", monoclinic crystal system, often in the form of fine scale-like aggregates, lavender, sometimes yellow-green, glass luster. Lithium carbonate is used to prepare lithium carbonate. Lithium carbonate is a strategic material of great significance in the national economy and national defense construction. It is also an energy material closely related to people's life. As a basic raw material, it is widely used in batteries, ceramics, metallurgy, energy, medicine, and refrigeration. And many other industries, known as industrial monosodium glutamate, battery-grade lithium carbonate is the key raw material for the production of lithium-ion batteries. The safety performance of the battery can prolong its service life. Lithium carbonate for medicine can be used as sleeping pills and sedatives. It is the drug of choice for the treatment of mania. The main raw material of lithium single crystal.

The existing high-temperature waste heat recovery device has a single mechanism, and the waste heat recovery efficiency is not high. The single-stage heat exchange device has a large heat transfer temperature difference, which requires high material requirements for the device, and the cost is high, and there is no device to remove dust and harmful gases in the flue gas. The harmful gas in the flue gas is more likely to corrode the heat exchange structure at high temperature and reduce the service life of the device.

Utility model content

The utility model mainly solves the technical problems existing in the prior art, thereby providing a lepidolite industrial kiln high-temperature flue gas waste heat recovery device.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: the utility model discloses a high-temperature flue gas waste heat recovery device for lepidolite industrial kilns, which includes a dust removal tower, a smoke inlet, a first heat exchanger and an outlet Smoke port, one side of the dust removal tower is provided with a smoke inlet, one end of the smoke inlet is connected to a smoke expander, the bottom of the dust removal tower is provided with an absorption tank, the dust removal tower is connected to the heat exchange tower through a connecting pipe, the A distribution plate is arranged on the upper end of the heat exchange tower, the distribution plate is connected to a pipeline, the pipeline is connected to a pump, the pump is connected to a storage tank through a pipeline, a filter layer is arranged on the upper end of the heat exchange tower, and the bottom of the filter layer is supported by Plate support, the first heat exchanger and the second heat exchanger are arranged in the heat exchange tower, the first medium inlet and the first medium outlet are arranged on both sides of the first heat exchanger, and the two sides of the second heat exchanger are A second medium inlet and a second medium outlet are arranged on the side, a collecting plate is arranged under the second heat exchanger, a storage tank is arranged at the bottom of the heat exchange tower, and a smoke outlet is arranged on one side of the bottom of the heat exchange tower. Holes are provided on the smoke expander.

Preferably, in order to enable the absorbent to absorb dust and harmful gases in the flue gas, an inlet and outlet connecting pipe is also provided on one side of the absorption tank, and the height of the absorption tank is higher than that of the smoke expander.

Preferably, in order to enable the smoke diffuser to be immersed in the absorbent and spread evenly, one end of the smoke inlet is vertically arranged, the vertical end is connected to the smoke expander, and the vertical end is arranged at the center of the dust removal tower.

Preferably, in order to fully mix the medium with the high-temperature flue gas and reduce the temperature of the high-temperature flue gas, the connecting pipe is arranged horizontally, and the horizontal direction of the connecting pipe is perpendicular to the medium distribution direction of the distribution plate.

Preferably, in order to distribute the medium evenly, the distribution plate is arranged at the center of the heat exchange tower, and the distribution plate is provided with a plurality of uniform distribution holes.

Preferably, in order to enable the heat exchanger medium to transfer heat in reverse and to achieve higher heat transfer efficiency, the vertical height of the first medium inlet is lower than the vertical height of the first medium outlet, and the second medium inlet is the same as the second medium outlet set up.

Preferably, in order to facilitate replacement and maintenance of the filter layer, the filter layer is in contact with the support plate.

Preferably, in order to enable centralized gas-liquid separation of the flue gas after heat exchange, the part where the collecting plate is connected to the heat exchange tower is inclined.

Beneficial effects of the utility model: the device is provided with a dust removal tower at the smoke inlet, and there is an absorption groove at the bottom of the dust removal tower, which can absorb dust and harmful corrosive gases in the flue gas, protect the waste heat recovery device behind, and extend the life of the device. At the same time, it protects the heat exchanger from being blocked, ensures the normal operation of the device, and pre-cools the high-temperature flue gas. A distribution plate is installed at the upper end of the heat exchange tower to evenly distribute the clean water. After absorbing the flue gas To cool down, the high-temperature flue gas is mixed with cold water, and the cold water absorbs heat, and the heat in the high-temperature flue gas is absorbed into the latent heat and sensible heat of the cold water, so that the temperature of the mixed gas is further reduced, and the flue gas is further filtered through the filter layer, and enters the first The heat exchanger and the second heat exchanger exchange heat. After multiple heat exchanges, the heat in the high-temperature flue gas can be basically recovered, and the waste heat recovery efficiency is high. At the same time, the flue gas is purified, which is conducive to environmental protection and realizes Green emissions.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the schematic plan view of the utility model;

Fig. 2 is the schematic diagram of smoke expander of the present utility model;

In the figure: 1. Dust removal tower, 2. Heat exchange tower, 3. Smoke inlet, 4. Absorption tank, 5. Smoke expander, 6. Connecting pipe, 7. Distribution plate, 8. Pipeline, 9. Pump, 10 , filter layer, 11, support plate, 12, first heat exchanger, 13, first medium inlet, 14, first medium outlet, 15, second heat exchanger, 16, second medium inlet, 17, second Medium outlet, 18, collection plate, 19, storage tank, 20, smoke outlet, 21, hole.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

Please refer to Figure 1-2, the lepidolite industrial kiln high-temperature flue gas waste heat recovery device includes a dust removal tower 1, a smoke inlet 3, a first heat exchanger 12 and a smoke outlet 20, and one side of the dust removal tower 1 A smoke inlet 3 is set, one end of the smoke inlet 3 is connected to a smoke expander 5, and an absorption tank 4 is arranged at the bottom of the dust removal tower 1, and the dust removal tower 1 is connected with the heat exchange tower 2 through a connecting pipe 6, and the dust removal tower 1 is connected with the heat exchange tower 2 through a connecting pipe 6, and the dust removal tower The upper end of the heat tower 2 is provided with a distribution plate 7, the distribution plate 7 is connected to the pipeline 8, the pipeline 8 is connected to the pump 9, the pump 9 is connected to the storage tank 19 through the pipeline 8, and the upper end of the heat exchange tower 2 is provided with a filter Layer 10, the bottom of the filter layer 10 is supported by a support plate 11, a first heat exchanger 12 and a second heat exchanger 15 are arranged in the heat exchange tower 2, and first heat exchangers 12 are arranged on both sides of the first heat exchanger 12. A medium inlet 13 and a first medium outlet 14, a second medium inlet 16 and a second medium outlet 17 are arranged on both sides of the second heat exchanger 15, a collecting plate 18 is arranged below the second heat exchanger 15, and the second heat exchanger 15 is provided with a collection plate 18. A storage tank 19 is provided at the bottom of the heat tower 2 , a smoke outlet 20 is provided at one side of the bottom of the heat exchange tower 2 , and a hole 21 is provided on the smoke diffuser 5 .

As a technical optimization scheme of the utility model, an inlet and outlet connecting pipe is also provided on one side of the absorption tank 4 , and the installation height of the absorption tank 4 is higher than that of the smoke expander 5 .

As a technical optimization scheme of the utility model, one end of the smoke inlet 3 is vertically arranged, the vertical end is connected to the smoke expander 5, and the vertical end is arranged at the center of the dust removal tower 1 .

As a technical optimization scheme of the present invention, the connecting pipe 6 is arranged horizontally, and the horizontal direction of the connecting pipe 6 is perpendicular to the medium distribution direction of the distribution plate 7 .

As a technical optimization scheme of the present invention, the distribution plate 7 is arranged at the center of the heat exchange tower 2, and the distribution plate 7 is provided with a plurality of uniform distribution holes.

As a technical optimization solution of the present invention, the vertical height of the first medium inlet 13 is lower than the vertical height of the first medium outlet 14, and the second medium inlet 16 and the second medium outlet 17 are set in the same manner.

As a technical optimization solution of the present invention, the filter layer 10 and the support plate 11 are in contact connection.

As a technical optimization solution of the present utility model, the part where the collecting plate 18 is connected to the heat exchange tower 2 is arranged obliquely.

When the utility model is in use, high-temperature flue gas enters through the smoke inlet 3, and is uniformly diffused into the absorbent in the absorption groove 4 at the bottom of the dust removal tower 1 by the hole 21 on the smoke expander 5, and the absorbent can absorb high-temperature smoke. Dust and harmful gases in the air, while pre-cooling the high-temperature gas, the absorbed flue gas enters the top of the heat exchange tower 2 through the connecting pipe 6, and a distribution plate 7 is arranged on the top of the heat exchange tower 2, and the pump 9 can transfer the heat The cooled clean water medium at the bottom of the tower 2 is extracted from the storage tank 19 to the distribution plate 7. The medium can be recycled, reducing emissions, safe and environmentally friendly. After the high-temperature flue gas is mixed with the clean water medium, the heat in the high-temperature flue gas is transferred to the clean water medium Sensible heat and latent heat, clear water is gasified into a gaseous state, and a small amount of dust in the flue gas is further filtered through the filter layer 10 to prevent dust from clogging the first heat exchanger 12 (model: AET600-1.6-25-REd) and the second heat exchanger Device 15 (model: AET600-1.6-25-REdc), the first medium inlet 13 and the first medium outlet 14 flow into high-temperature heat exchange oil to exchange heat for high-temperature mixed gas, the second medium inlet 16 and the second medium outlet 17 The flow of clean water exchanges heat for the lower mixed gas, and performs multiple heat exchanges for the high-temperature mixed gas. While improving the heat exchange efficiency, it can also reduce the heat exchange temperature difference and prolong the service life of the device. The bottom of the heat exchange tower 2 is equipped with The collecting plate 18 separates the cooled liquid droplets in the mixed gas into gas-liquid, and the separated liquid enters the storage tank 19 under the action of gravity, and the smoke after heat exchange is discharged from the smoke outlet 20 .

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device, including gas wash tower (1), smoke inlet (3), First Heat Exchanger (12) and outlet flue (20), it is characterised in that：Gas wash tower (1) the side setting smoke inlet (3), described smoke inlet (3) one end Cigarette device (5) is expanded in connection, and gas wash tower (1) the bottom end setting absorbs slot (4), and the gas wash tower (1) passes through with heat exchange columns (2) to be connect (6) connection, heat exchange columns (2) the upper end setting distribution grid (7) are managed, the distribution grid (7) connect with pipeline (8), the pipeline (8) it is connect with pump (9), the pump (9) is connect by pipeline (8) with accumulator tank (19), heat exchange columns (2) the upper end setting filtering Layer (10), filter layer (10) bottom are supported by support plate (11), in the heat exchange columns (2) setting First Heat Exchanger (12) with Second heat exchanger (15), First Heat Exchanger (12) the both sides setting first medium entrance (13) export (14) with first medium, Second heat exchanger (15) the both sides setting second medium entrance (16) exports (17) with second medium, second heat exchanger (15) lower section setting collecting board (18), heat exchange columns (2) the bottom end setting accumulator tank (19), heat exchange columns (2) the bottom end side Outlet flue (20) is set, it is described to expand providing holes (21) on cigarette device (5).

2. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：The suction Receipts slot (4) side is also equipped with disengaging and takes over, and absorbs slot (4) and sets highly to be higher than and expands cigarette device (5) height.

3. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：It is described into One end of mouth (3) is is vertically arranged, and cigarette device (5) is expanded in vertical end connection, and vertical end is arranged on gas wash tower (1) center.

4. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：The company It is horizontally disposed to take over (6), and connecting tube (6) horizontal direction and distribution grid (7) dielectric distribution direction are orthogonal.

5. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：Described point Fabric swatch (7) is arranged on heat exchange columns (2) center, and multiple uniform distribution holes are provided on distribution grid (7).

6. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：Described One medium inlet (13) vertical direction height less than first medium export (14) vertical direction height, second medium entrance (16) with Second medium outlet (17) is identical setting.

7. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：The mistake Filtering layer (10) is with support plate (11) to connect.

8. lepidolite industrial furnace high-temperature flue gas waste-heat recovery device according to claim 1, it is characterised in that：The receipts It is partly to be obliquely installed to collect plate (18) to connect heat exchange columns (2).