CN219141535U - Waste heat recycling system applied to lithium battery industry - Google Patents
Waste heat recycling system applied to lithium battery industry Download PDFInfo
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- CN219141535U CN219141535U CN202223559466.4U CN202223559466U CN219141535U CN 219141535 U CN219141535 U CN 219141535U CN 202223559466 U CN202223559466 U CN 202223559466U CN 219141535 U CN219141535 U CN 219141535U
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- heat exchanger
- spiral
- spiral tube
- waste heat
- way valve
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- 239000002918 waste heat Substances 0.000 title claims abstract description 30
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 238000012423 maintenance Methods 0.000 claims abstract description 12
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000003723 Smelting Methods 0.000 abstract description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- -1 and meanwhile Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of heat exchange devices, in particular to a waste heat recycling system applied to the lithium battery industry. The utility model comprises a main pipeline and a spiral pipe heat exchanger arranged on the main pipeline, wherein an electric three-way valve is arranged between the main pipeline and the spiral pipe heat exchanger, the main pipeline is connected with an inlet of a bypass pipeline through the electric three-way valve, and an outlet of the bypass pipeline is connected with an outlet of the spiral pipe heat exchanger; a pipe rack arranged in parallel with the spiral pipe heat exchanger is arranged on the outer side of the spiral pipe heat exchanger; the spiral tube heat exchanger comprises an outer shell, an inner cylinder, and an outer spiral tube and an inner spiral tube which are coiled on the inner cylinder; the internal thread coil pipe and the cylinder body are separated by the isolating plate and can be replaced; the bypass flue and the electric three-way valve are arranged, so that different trend of flue gas is realized, and the normal use of the kiln is not influenced during the inspection and maintenance of the spiral tube heat exchanger; the method is mainly suitable for being matched with the recovery and the utilization of the high-temperature flue gas waste heat generated in the smelting process of the lithium iron phosphate.
Description
Technical Field
The utility model relates to the technical field of heat exchange devices, in particular to a waste heat recycling system applied to the lithium battery industry.
Background
The high-temperature flue gas waste heat generated in the smelting process of lithium iron phosphate is recycled and matched with the smelting process, so that the reasonable arrangement and implementation of an ultralow emission matched system are realized, and the method belongs to the conventional operation of the current enterprises. For example, chinese patent CN202022793501.3 discloses a pin fin type heat exchanger for recovering waste heat in lithium battery production, which has the advantages of simple structure and high thermal efficiency. However, the internal thread coil pipe and the cylinder body are integrally processed, so that the separation and maintenance can not be realized; the spiral tube heat exchanger is arranged between the kiln incinerator and the kiln induced draft fan, and the normal use of the kiln is affected during the inspection and maintenance of the spiral tube heat exchanger.
Disclosure of Invention
The utility model aims to solve the technical problems that: the defect of the prior art is overcome, and a waste heat recycling system applied to the lithium battery industry is provided, wherein an internal thread coil pipe of a spiral pipe heat exchanger and a cylinder body are separated by a partition plate and can be replaced; the bypass flue and the electric three-way valve are arranged, different trend of flue gas is realized by adjusting the electric three-way valve, and the normal use of the kiln is not influenced during the inspection and maintenance of the spiral tube heat exchanger.
The technical scheme of the utility model is as follows:
the waste heat recycling system comprises a main pipeline and a spiral pipe heat exchanger arranged on the main pipeline, wherein an electric three-way valve is arranged between the main pipeline and the spiral pipe heat exchanger, the main pipeline is connected with an inlet of a bypass pipeline through the electric three-way valve, and an outlet of the bypass pipeline is connected with an outlet of the spiral pipe heat exchanger;
the outer side of the spiral pipe heat exchanger is provided with a pipe gallery frame which is arranged in parallel with the spiral pipe heat exchanger, the lower part of the pipe gallery frame is provided with a maintenance frame, and the maintenance frame is vertical to the pipe gallery frame and extends to the lower part of the bypass pipeline;
the spiral tube heat exchanger comprises an outer shell, an inner cylinder, an outer spiral tube and an inner spiral tube, wherein the outer spiral tube and the inner spiral tube are coiled on the inner cylinder, the outer shell is communicated with the electric three-way valve, and an inlet for circulating medium is formed in the inner cylinder; the outer coil and the inner coil together form a spiral fin coil structure.
Preferably, the inlet end of the spiral fin coil structure is connected with the water tank, and the water vapor after heat exchange is led into a steam-water separator, and the steam-water separator is connected with a grinding gas heater or an evaporation device distinguishing cylinder.
Preferably, a high-temperature-resistant support body is arranged between the outer spiral tube and the inner spiral tube, the support body comprises six isolating plates and support plates, the support plates are uniformly arranged according to 120 degrees, the support plates are fixedly welded when assembled with the outer cylinder body, and the isolating plates are movably clamped with the outer spiral tube and the inner spiral tube when assembled.
Preferably, the electromagnetic valves of the electric three-way valve and the inlet of the spiral pipe heat exchanger are both of interlocking control structures.
Preferably, the inlet end of the main pipeline is connected with a waste heat boiler, the tail end of the spiral pipe heat exchanger is provided with a draught fan, and flue gas of the waste heat boiler enters the spiral pipe heat exchanger through the action of the draught fan.
Preferably, the outer shell is also provided with an inspection door and a shell drain outlet.
Compared with the prior art, the utility model has the following beneficial effects:
the internal thread coil pipe and the cylinder body of the spiral pipe heat exchanger are separated by a separation plate and can be replaced; the bypass flue and the electric three-way valve are arranged, different trend of the flue gas is realized by adjusting the electric three-way valve with interlocking protection, and the normal use of the kiln is not influenced during the inspection and maintenance of the spiral tube heat exchanger; the temperature of smoke is reduced from 500-1000 ℃ to about 200 ℃, and water in the boiler absorbs the heat, so that the generated steam is used in other working procedures, and the resource utilization is realized with high efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a perspective view of a waste heat recovery and utilization system.
Fig. 2 is a top view of the waste heat recovery system.
Fig. 3 is a schematic structural view of the electric three-way valve.
Fig. 4 is one of the sectional views of the spiral tube heat exchanger.
Fig. 5 is a second cross-sectional view of the spiral tube heat exchanger.
In the figure: 1. a main pipe; 2. an electric three-way valve; 3. a spiral tube heat exchanger; 31. an outer housing; 32. an inner cylinder; 33. an outer coil; 34. an inner coil; 35. an inlet; 36. a support body; 4. a bypass conduit; 5. a maintenance frame; 6. and a pipe rack.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
Example 1
As shown in fig. 1, the present embodiment provides a waste heat recovery and utilization system applied to the lithium battery industry, which includes a main pipe 1, and a spiral pipe heat exchanger 3 installed on the main pipe 1. As shown in fig. 2, a pipe rack 6 arranged in parallel with the spiral pipe heat exchanger 3 is arranged outside the spiral pipe heat exchanger 3, and a maintenance rack 5 is arranged at the lower part of the pipe rack 6. The service rack 5 is perpendicular to the piping rack 6 and extends below the bypass piping 4.
As shown in fig. 3, an electric three-way valve 2 is installed between the main pipeline 1 and the spiral pipe heat exchanger 3, the main pipeline 1 is connected with an inlet of a bypass pipeline 4 through the electric three-way valve 2, and an outlet of the bypass pipeline 4 is connected with an outlet of the spiral pipe heat exchanger 3.
Working principle: the tap water provided is softened water by a water softening device, enters a softened water tank, the softened water is evenly pumped to each pipeline of a spiral pipe heat exchanger 3 by a water supplementing pump and an electric ball valve, the incoming water is changed into water vapor by the spiral pipe heat exchanger 3 through heat exchange, the water vapor enters a steam-water separator through a pipeline, part of generated vapor is used for heating grinding gas of an air flow mill, and other vapors are distributed to an evaporation device through a steam pipeline from a seller pipe to a cylinder for use by a precursor production device. In order to ensure that the waste heat recycling system does not influence the operation of a waste heat kiln, a bypass pipeline 4 is arranged between an original waste heat kiln and a draught fan, and corresponding electric three-way valves 2 are added on a spiral pipe heat exchanger 3 and a main pipeline 1 so as to perform switching and interlocking protection; and a steam drum is arranged in each workshop, valves meeting the use requirements are required to be arranged on the inlet and outlet pipes of the steam drums, and the rear pipelines of the two workshops are combined into a pipe connected to the pipe rack 6.
Water flow i: tap water, a water tank, a water supplementing pump, a steam-water separator, a circulating pump, a spiral tube heat exchanger 3, a steam-water separator, a gas collecting pipeline, a ground gas heater and a water tank.
Water flow II: tap water, a water tank, a water supplementing pump, a steam-water separator, a circulating pump, a spiral tube heat exchanger 3, a steam-water separator, a gas collecting pipeline, an evaporation device distinguishing cylinder, a production device, a circulating pump and a water tank.
Flue gas flow i (normal): waste heat kiln, main pipeline 1, electric three-way valve 2, spiral tube heat exchanger 3, induced draft fan and atmosphere.
Flue gas flow ii (maintenance): waste heat kiln, main pipeline 1, electric three-way valve 2, bypass pipeline 4 and atmosphere.
Example 2
On the basis of embodiment 1, as shown in fig. 4 and 5, the spiral tube heat exchanger 3 comprises an outer shell 31, an inner cylinder 32, and an outer spiral tube 33 and an inner spiral tube 34 which are coiled on the inner cylinder 32, wherein the outer shell 31 is communicated with the electric three-way valve 2, and an inlet 35 for circulating medium is formed on the inner cylinder 32; the outer coil 33 and the inner coil 34 together form a turn-fin coil structure.
The spiral fin coil structure has the advantages that: the heat exchanger is used for enlarging the protruding surface of the outer wall of the inner cylinder 32, and is convenient for exchanging heat with external flue gas, and meanwhile, dust and impurities are prevented from being covered on the heat exchanger due to the fin shape of the spiral fin coil structure. The spiral fin coil structure belongs to conventional technical means and is not described in detail herein.
The inlet end of the spiral fin coil structure is connected with the water tank, and the water vapor after heat exchange is introduced into the vapor-water separator, and the vapor-water separator is connected with the grinding gas heater or the evaporating device distinguishing cylinder.
Preferably, a high temperature resistant support body 36 is installed between the outer coil 33 and the inner coil 34, the support body 36 comprises a separation plate and a support plate, which are six-piece and are uniformly arranged according to 120 degrees, wherein the support plate is fixedly welded when assembled with the outer cylinder, and the separation plate is movably clamped with the inner cylinder 32, the outer coil 33 and the inner coil 34 when assembled.
Example 3
On the basis of the embodiment 2, the electromagnetic valves of the electric three-way valve 2 and the inlet 35 of the spiral tube heat exchanger 3 are of an interlocking control structure. And the size of the electric three-way valve 2 is regulated according to the temperature of the outlet flue gas so as to realize the final temperature of the outlet flue gas.
Preferably, the inlet end of the main pipeline 1 is connected with a waste heat boiler, the tail end of the spiral pipe heat exchanger 3 is provided with an induced draft fan, and flue gas of the waste heat boiler enters the spiral pipe heat exchanger 3 through the action of the induced draft fan.
The spiral tube heat exchanger 3 adopts a forced circulation mode, so that a great amount of heat is contained in the flue gas discharged by the kiln, and the flue gas passes through the spiral tube heat exchanger 3 and is cooled by water in the spiral tube heat exchanger 3. The smoke temperature is reduced from 500 ℃ to 1000 ℃ to about 200 ℃, and the water in the spiral tube heat exchanger 3 absorbs the heat, so that the generated steam is used in other working procedures, and the resource utilization is realized with high efficiency.
Preferably, the outer shell 31 is further provided with an inspection door and a shell drain. The outer case 31 has a cylindrical structure and can withstand a certain pressure.
The utility model is mainly suitable for the high-temperature flue gas waste heat recovery and the matched use generated in the smelting process of the lithium iron phosphate, and has the advantages of novel thought and wide development field.
Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (6)
1. The waste heat recycling system applied to the lithium battery industry comprises a main pipeline (1) and a spiral pipe heat exchanger (3) arranged on the main pipeline (1), and is characterized in that an electric three-way valve (2) is arranged between the main pipeline (1) and the spiral pipe heat exchanger (3), the main pipeline (1) is connected with an inlet of a bypass pipeline (4) through the electric three-way valve (2), and an outlet of the bypass pipeline (4) is connected with an outlet of the spiral pipe heat exchanger (3);
a pipe gallery frame (6) which is arranged in parallel with the spiral pipe heat exchanger (3) is arranged on the outer side of the spiral pipe heat exchanger, a maintenance frame (5) is arranged on the lower portion of the pipe gallery frame (6), and the maintenance frame (5) is perpendicular to the pipe gallery frame (6) and extends to the lower portion of the bypass pipeline (4);
the spiral tube heat exchanger (3) comprises an outer shell (31), an inner cylinder (32), and an outer spiral tube (33) and an inner spiral tube (34) which are coiled on the inner cylinder (32), wherein the outer shell (31) is communicated with the electric three-way valve (2), and an inlet (35) for circulating medium is formed in the inner cylinder (32); the outer coil (33) and the inner coil (34) together form a turn-fin coil structure.
2. The waste heat recovery and utilization system for lithium battery industry as claimed in claim 1, wherein the inlet end of the spiral fin coil structure is connected with the water tank, and the water vapor after heat exchange is introduced into the steam-water separator, and the steam-water separator is connected with the grinding gas heater or the evaporating device distinguishing cylinder.
3. The waste heat recycling system applied to the lithium battery industry according to claim 1, wherein a high-temperature-resistant support body (36) is arranged between the outer spiral tube (33) and the inner spiral tube (34), the support body (36) comprises six isolation plates and support plates, the isolation plates and the support plates are uniformly arranged according to 120 degrees, the support plates are fixedly welded when assembled with the outer cylinder body, and the isolation plates are movably clamped with the outer spiral tube (33) and the inner spiral tube (34) when assembled.
4. The waste heat recycling system applied to the lithium battery industry as claimed in claim 1, wherein the electromagnetic valves of the electric three-way valve (2) and the inlet (35) of the spiral tube heat exchanger (3) are of an interlocking control structure.
5. The waste heat recycling system applied to the lithium battery industry according to claim 1, wherein the inlet end of the main pipeline (1) is connected with a waste heat boiler, an induced draft fan is arranged at the tail end of the spiral pipe heat exchanger (3), and flue gas of the waste heat boiler enters the spiral pipe heat exchanger (3) through the action of the induced draft fan.
6. The waste heat recovery and utilization system applied to the lithium battery industry as claimed in claim 1, wherein an inspection door and a shell drain are further arranged on the outer shell (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223559466.4U CN219141535U (en) | 2022-12-30 | 2022-12-30 | Waste heat recycling system applied to lithium battery industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223559466.4U CN219141535U (en) | 2022-12-30 | 2022-12-30 | Waste heat recycling system applied to lithium battery industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219141535U true CN219141535U (en) | 2023-06-06 |
Family
ID=86562972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223559466.4U Active CN219141535U (en) | 2022-12-30 | 2022-12-30 | Waste heat recycling system applied to lithium battery industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219141535U (en) |
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2022
- 2022-12-30 CN CN202223559466.4U patent/CN219141535U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Waste heat recovery and utilization system applied in the lithium battery industry Granted publication date: 20230606 Pledgee: China People's Property Insurance Co.,Ltd. Qingdao Branch Pledgor: QINGDAO KAI NON ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2024370010019 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |