CN112933852B - Kiln exhaust gas and waste heat recovery process and system - Google Patents
Kiln exhaust gas and waste heat recovery process and system Download PDFInfo
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- CN112933852B CN112933852B CN202110255010.XA CN202110255010A CN112933852B CN 112933852 B CN112933852 B CN 112933852B CN 202110255010 A CN202110255010 A CN 202110255010A CN 112933852 B CN112933852 B CN 112933852B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The invention discloses a kiln waste gas waste heat recovery process and a kiln waste gas waste heat recovery system, waste heat utilization is realized by a waste heat refrigerating device and a heat exchanger, waste heat can be used for waste gas condensation water removal, furnace inlet oxygen heat exchange and rotary dehumidifier regeneration, waste gas from a primary kiln can be used for secondary sintering of a high-nickel ternary material after wet impurity removal and secondary water removal to obtain oxygen with concentration of more than 95%, waste gas from a secondary kiln can be used for heating primary sintering oxygen, and the rest waste gas can be used for primary sintering to obtain oxygen with oxygen concentration of more than 97% after dust removal and purification device water removal and carbon dioxide removal of a dust filtering device, and can be directly used for the primary sintering, so that the cyclic regeneration of the oxygen is realized. The invention realizes multiple utilization of waste heat and oxygen circulation regeneration, so that the production process consumes less gas, and is efficient and energy-saving.
Description
Technical Field
The invention relates to the technical field of kiln tail gas recycling, in particular to a kiln waste gas and waste heat recycling process and system.
Background
With the rise of new energy lithium ion battery industry, high-nickel ternary materials are attracting attention with high energy density and long cycle life. How to reduce the production cost of the high-nickel ternary anode material is a constant theme, and a large cost reduction space is provided for recycling waste gas and waste heat by combining the condition of the existing pure oxygen sintering process of a long kiln. The related art describes an oxygen recycling device of a kiln for sintering high-nickel ternary materials, only partial water vapor is removed through condensation, and other dust brought out by exhaust can greatly influence the oxygen concentration, so that the oxygen concentration required by sintering is more than 95% and the sintering effect of the high-nickel ternary materials is influenced. In addition, a system for recycling the tail gas of the high-nickel kiln is also described, the scheme only removes impurities from the discharged waste gas and then prepares oxygen again, the air oxygen preparation efficiency is further improved, and the oxygen after sintering of the kiln is not recycled efficiently. Therefore, it is necessary to develop a process that can directly recycle oxygen and waste heat.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a kiln waste gas and waste heat recovery process and system, which can effectively recycle oxygen and waste heat in the sintering process of the high-nickel ternary anode material so as to reduce the production cost.
An embodiment of the kiln waste gas and waste heat recovery process according to the first aspect of the invention comprises the following steps:
S1, heating fresh gas by a heat exchanger, then, entering a kiln furnace for reaction, and introducing high-temperature waste gas generated by the reaction into a wet dust collector after heat exchange of a waste heat refrigerating device;
s2, the waste gas after dust removal is dehumidified by a condensing device and then is introduced into a moisture absorption area of a rotary dehumidifier for deep water removal to obtain primary recovered gas;
S3, introducing the primary recovered gas into a secondary kiln for reaction, wherein part of heat of high-temperature waste gas generated by the reaction is used for heating fresh gas through the heat exchanger, and then the fresh gas enters a dust filtering device for dust removal;
s4, introducing the waste gas which is dedusted and has waste heat into a regeneration zone of the rotary dehumidifier, and finally, introducing the waste gas into a purification device to obtain secondary recovery gas;
S5, the secondary recovery gas is led into the primary kiln again for reuse;
Wherein, the waste heat refrigeration device can be used for the refrigeration of the condensing device.
In the invention, the kiln waste gas and waste heat recovery process is used in the sintering process of the high-nickel ternary cathode material, wherein the required gas is oxygen, and the ternary cathode material is ternary nickel cobalt lithium manganate (NCM 622,712,811,955), nickel cobalt lithium aluminate (NCA), nickel cobalt manganese lithium aluminate or lithium-rich manganese base.
The kiln waste gas and waste heat recovery process provided by the embodiment of the invention has at least the following beneficial effects:
1. The waste heat utilization of the high-temperature waste gas from the kiln is realized through the waste heat refrigerating device and the heat exchanger, and the waste heat can be used for waste gas condensation and dehydration, furnace inlet oxygen heat exchange and rotary dehumidifier regeneration, so that the waste heat energy is efficiently utilized;
2. The waste gas from the primary kiln can obtain oxygen with concentration of more than 95% after wet impurity removal and secondary water removal, and can be directly used for secondary sintering of the high-nickel ternary material;
3. The waste gas from the secondary kiln can be used for heating primary sintering fresh gas, further energy is saved, the rest waste gas can be used for obtaining oxygen with the oxygen concentration of more than 97% after being dedusted by a dust filtering device and dehydrated and carbon dioxide removed by a purifying device, and the waste gas can be directly used for primary sintering, so that the cyclic regeneration of the oxygen is realized.
4. The operation power of the waste gas and waste heat recovery process is mainly an induced draft fan and a water pump, so that the operation energy consumption of the process is extremely low, the operation cost is greatly saved, and in addition, the process oxygen recovery is mainly purification instead of pure oxygen production, so that the recovery efficiency is high. Compared with the conventional roller kiln sintering process, the method combines the sintering characteristic of the high-nickel ternary anode material, realizes multiple utilization of waste heat and oxygen recycling regeneration, and ensures that the production process consumes less gas, is efficient and saves energy.
According to some embodiments of the invention, the waste heat refrigeration device may be further used for refrigeration of the wet dust collector and/or the cooling zone of the primary kiln and/or the cooling zone of the secondary kiln.
According to some embodiments of the invention, the process is used in a sintering process of a high nickel ternary cathode material, the fresh gas is fresh oxygen, and the high temperature exhaust gas is high temperature oxygen-enriched exhaust gas.
According to some embodiments of the present invention, the high-temperature exhaust gas generated by the primary kiln is directly discharged into the waste heat refrigerating device, the high-temperature exhaust gas generated by the secondary kiln is directly discharged into the heat exchanger, and the direct discharge, i.e. the exhaust pipeline, is not subjected to air supplement. The temperature of the waste gas and the concentration of oxygen in the waste gas can be reduced due to the existence of the air supply port, and all waste gas and waste heat from the kiln can be completely collected in a direct-discharge mode.
According to some embodiments of the invention, the temperature of the high-temperature exhaust gas generated by the primary kiln is 400-600 ℃, and the temperature of the high-temperature exhaust gas generated by the secondary kiln is 200-400 ℃.
According to some embodiments of the invention, the secondary recycle gas is introduced into the primary kiln at a volume ratio of 10 (1-10) to the fresh gas.
According to the kiln waste gas and waste heat recovery system, the kiln waste gas and waste heat recovery system comprises a heat exchanger, a first burning kiln, a waste heat refrigerating device, a wet dust collector, a condensing device, a rotary dehumidifier, a second burning kiln, a dust filtering device and a purifying device, wherein the rotary dehumidifier comprises a moisture absorption area and a regeneration area, gas enters the first burning kiln through the heat exchanger, waste gas of the first burning kiln sequentially passes through the waste heat refrigerating device, the wet dust collector, the condensing device and the moisture absorption area and then enters the second burning kiln, waste gas of the second burning kiln is used as a heating medium to be introduced into the heat exchanger, and then sequentially introduced into the dust filtering device, the regeneration area and the purifying device, and an outlet of the purifying device is communicated with an inlet of the first burning kiln, wherein the waste heat refrigerating device can be used for refrigerating of the condensing device.
According to some embodiments of the invention, the waste heat refrigerating device is a lithium bromide water chilling unit, the lithium bromide water chilling unit comprises a generator and an evaporator, the kiln is communicated with the generator, the condensing device comprises a cooling water cavity, a condensing air chamber and a first circulating cooling water pipe, the condensing air chamber is arranged in the cooling water cavity, water in the cooling water cavity can flow through the evaporator through the first circulating cooling water pipe to realize heat exchange, condensed water can be contained at the bottom of the condensing air chamber, and a drain valve is arranged at the bottom of the condensing air chamber.
According to some embodiments of the invention, the primary kiln and/or the secondary kiln comprises a cooling zone, the condensing device further comprises a second circulating cooling water pipe, and water in the cooling water cavity can flow through the cooling zone through the second circulating cooling water pipe so as to realize heat exchange.
According to some embodiments of the invention, the condensing device further comprises a third circulating cooling water pipe, the wet dust collector is a water curtain dust collector, the water curtain dust collector comprises a water tank, and water in the cooling water cavity can flow through the water tank through the third circulating cooling water pipe to realize heat exchange.
According to some embodiments of the invention, the purification device is a molecular sieve purifier.
According to some embodiments of the invention, an air storage tank is further communicated between the moisture absorption area and the secondary kiln.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of the waste gas and waste heat recovery of a sintering process of a high nickel ternary cathode material according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a rotary dehumidifier according to an embodiment of the present invention.
Reference numerals are a heat exchanger 100, a kiln 200, a cooling zone 210, an induced draft fan 300, a lithium bromide water chilling unit 400, a generator 410, an evaporator 420, a water curtain dust remover 500, a water tank 510, a condensing device 600, a condensing air chamber 610, a cooling water cavity 620, a first circulating cooling water pipe 630, a second circulating cooling water pipe 640, a third circulating cooling water pipe 650, a rotary dehumidifier 700, a moisture absorption zone 710, a regeneration zone 720, a gas storage tank 800, a kiln 900, a dust filter 1000, a molecular sieve purifier 1100 and a waste gas port 1110.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Referring to fig. 1, a kiln waste gas and waste heat recovery system comprises a heat exchanger 100, a kiln 200, a waste heat refrigerating device, a wet dust collector, a condensing device 600, a rotary dehumidifier 700, a kiln 900, a dust filtering device and a purifying device, wherein the rotary dehumidifier 700 comprises a moisture absorption region 710 and a regeneration region 720, gas enters the kiln 200 through the heat exchanger 100, waste gas of the kiln 200 sequentially passes through the waste heat refrigerating device, the wet dust collector, the condensing device 600 and the moisture absorption region 710 and then enters the kiln 900, waste gas of the kiln 900 is used as a heating medium to be introduced into the heat exchanger 100, and then sequentially introduced into the dust filtering device, the regeneration region 720 and the purifying device, and an outlet of the purifying device is communicated with an inlet of the kiln 200, wherein the waste heat refrigerating device can be used for refrigerating the condensing device 600.
In some embodiments, the waste heat refrigeration device is a lithium bromide water chiller 400, the lithium bromide water chiller 400 comprises a generator 410 and an evaporator 420, a kiln 200 is communicated with the generator 410, the condensation device 600 comprises a cooling water cavity 620, a condensation air chamber 610 and a first circulating cooling water pipe 630, the condensation air chamber 610 is arranged in the cooling water cavity 620, water in the cooling water cavity 620 can flow through the evaporator 420 through the first circulating cooling water pipe 630 to realize heat exchange, condensed water can be contained at the bottom of the condensation air chamber 610, and a drain valve is arranged at the bottom of the condensation air chamber 610.
In some embodiments, the primary kiln 200 and/or the secondary kiln 900 includes a cooling zone 210, and the condensing apparatus 600 further includes a second circulating cooling water pipe 640, and water in the cooling water chamber 620 may flow through the cooling zone 210 through the second circulating cooling water pipe 640 to achieve heat exchange.
In some embodiments, the condensing apparatus 600 further includes a third circulating cooling water pipe 650, the wet dust collector is a water curtain dust collector 500, the water curtain dust collector 500 includes a water tank 510, and water in the cooling water chamber 620 may flow through the water tank 510 through the third circulating cooling water pipe 650 to achieve heat exchange.
In some of these embodiments, the purification device is a molecular sieve purifier 1100.
In some embodiments, a gas storage tank 800 is also in communication between the moisture absorption region 710 and the kiln 900.
Examples
Referring to fig. 1, a kiln waste gas and waste heat recovery process for sintering a high nickel ternary cathode material comprises the following steps:
S1, fresh oxygen enters from an inlet valve, enters into a kiln 200 after being heated by a heat exchanger 100, and high-temperature oxygen-enriched waste gas (400-600 ℃) after the reaction is directly discharged from an exhaust port of the kiln under the action of a draught fan 300, then enters into a generator 410 of a lithium bromide water chilling unit 400 for heat exchange, and then the waste gas is introduced into a water curtain dust remover 500, so that dust such as lithium oxide in the waste gas is adsorbed and dissolved by utilizing a water curtain.
S2, the waste gas after dust removal is introduced into a condensation air chamber 610 of the condensation device 600, and the temperature of the condensation air chamber 610 is very low due to the fact that cooling water is wrapped around the condensation air chamber 610, so that water vapor in the waste gas is condensed and dehumidified. It should be noted that, the cooling water in the cooling water cavity 620 is cooled by the evaporator 420 of the lithium bromide water chiller 400, and the specific principle is that after the lithium bromide water solution is heated by the high temperature waste gas in the generator 410, the water in the solution is continuously vaporized, the concentration of the lithium bromide water solution in the generator 410 is continuously increased along with the continuous vaporization of the water, the water enters the absorber, the water vapor enters the condenser, is cooled by the cooling water in the condenser and then condensed into high-pressure low-temperature liquid water, when the water in the condenser enters the evaporator 420 through the throttle valve, the water rapidly expands and is vaporized, when the water in the cooling water cavity 620 enters the evaporator 420 through the first circulating cooling water pipe 630, a large amount of heat of the water in the evaporator 420 is absorbed in the vaporization process, and the cooled water returns to the cooling water cavity 620 from the evaporator 420, so that the condensing device 600 has the cooling and refrigerating functions. In addition, the cooling water is introduced into the water tank 510 of the water curtain dust remover 500 through the second circulating cooling water pipe 640 to cool the exhaust gas, and is introduced into the cooling zone 210 of the kiln 200 through the third circulating cooling water pipe 650 to cool the materials in the cooling zone 210. The waste gas after condensation and dehumidification enters a moisture absorption area 710 of the rotary dehumidifier 700 for deep water removal, and the primary recovered oxygen with the purity of more than 95% is obtained after the waste gas comes out.
S3, the primary recovered oxygen enters the gas storage tank 800 to be cached, then is directly introduced into the secondary sintering kiln 900 through the inlet valve for the secondary sintering process of the high-nickel ternary anode material, and the high-temperature oxygen-enriched waste gas (200-400 ℃) after secondary sintering is directly discharged as a heating medium to be introduced into the heat exchanger 100 so as to heat a part of waste heat of the secondary combustion waste gas for heating fresh oxygen, and then the dust filter 1000 is used for removing carried-out dust.
S4, introducing the oxygen-enriched waste gas which is subjected to dust removal and has waste heat (80-200 ℃) into a regeneration zone 720 of the rotary dehumidifier 700, and recovering the activity of the moisture absorption zone 710, wherein the structural diagram of the rotary dehumidifier 700 is shown in figure 2. Finally, the oxygen-enriched waste gas enters a molecular sieve purifier 1100 to carry out adsorption purification on carbon dioxide and water, so as to obtain secondary recovered oxygen with purity of more than 97%, and the carbon dioxide and water adsorbed by the molecular sieve purifier 1100 are directly discharged from a waste gas port 1110.
S5, the secondary recovered oxygen is re-introduced into a kiln 200 for recycling through an inlet valve and fresh oxygen according to the volume ratio of 10 (1-10).
Comparative example 1
The conventional high-nickel ternary anode material production process is used as a reference, and the waste gas is filtered and dedusted only in the primary combustion process or the secondary combustion process and then is directly discharged into the air.
Comparative example 2
The patent (CN 110836608 a) was taken as comparative example 2, and the recovery process was performed by using a pressure swing adsorption oxygen generator as the oxygen generator and then recycling the oxygen generator.
Comparative example 3
The patent (CN 110836608 a) was used as comparative example 3, and the oxygen generator was a cryogenic air separation oxygen generator, and then the recovery process was performed.
The energy saving recovery during the sintering process of the high nickel ternary cathode material of 400kg/h is calculated according to the economic benefits of the above examples and comparative examples 1-3, as shown in the following table:
The comparison of the data in the table shows that the price and the oxygen recovery rate of different equipment are different, and the corresponding running cost and income are greatly different. The recovery process of the present invention is far superior to comparative examples 1-3 in terms of both the return on benefit period and the 10-year economic benefit amount, mainly because the recovery of oxygen in the present invention is mainly purification, not oxygen production, and thus the efficiency is higher and the process is more economical.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (10)
1. The kiln waste gas and waste heat recovery process is characterized by comprising the following steps of:
S1, heating fresh gas by a heat exchanger, then, entering a kiln furnace for reaction, and introducing high-temperature waste gas generated by the reaction into a wet dust collector after heat exchange of a waste heat refrigerating device;
s2, the waste gas after dust removal is dehumidified by a condensing device and then is introduced into a moisture absorption area of a rotary dehumidifier for deep water removal to obtain primary recovered gas;
S3, introducing the primary recovered gas into a secondary kiln for reaction, wherein part of heat of high-temperature waste gas generated by the reaction is used for heating fresh gas through the heat exchanger, and then the fresh gas enters a dust filtering device for dust removal;
s4, introducing the waste gas which is dedusted and has waste heat into a regeneration zone of the rotary dehumidifier, and finally, introducing the waste gas into a purification device to obtain secondary recovery gas;
S5, the secondary recovery gas is led into the primary kiln again for reuse;
Wherein, the waste heat refrigeration device can be used for the refrigeration of the condensing device.
2. The process according to claim 1, characterized in that the waste heat refrigeration device is also used for the refrigeration of the wet dust collector and/or of the cooling zone of the primary kiln and/or of the cooling zone of the secondary kiln.
3. The process of claim 1 wherein the high temperature exhaust gas from the primary kiln is directed to a waste heat refrigeration unit and the high temperature exhaust gas from the secondary kiln is directed to a heat exchanger.
4. The process of claim 1 wherein said secondary recycle gas is introduced to said kiln in a volume ratio of 10 (1-10) to said fresh gas.
5. The utility model provides a kiln waste gas waste heat recovery system, its characterized in that includes heat exchanger (100), a kiln (200), waste heat refrigerating plant, wet dust collector, condensing equipment (600), rotary dehumidifier (700), two kiln (900), dust filter equipment and purifier, rotary dehumidifier (700) are including hygroscopic district (710) and regeneration district (720), gaseous warp heat exchanger (100) get into one kiln (200), the waste gas of one kiln (200) passes through in proper order waste heat refrigerating plant, wet dust collector, condensing equipment (600) and hygroscopic district (710) back get into two kiln (900), the waste gas of two kiln (900) is as heating medium lets in heat exchanger (100), lets in proper order dust filter equipment, regeneration district (720) and purifier again, purifier's export with the entry intercommunication of one kiln (200), wherein, waste heat refrigerating plant can be used to condensing equipment (600) refrigerating plant's entry.
6. The kiln waste gas and waste heat recovery system according to claim 5, wherein the waste heat refrigeration device is a lithium bromide water chilling unit (400), the lithium bromide water chilling unit (400) comprises a generator (410) and an evaporator (420), the kiln (200) is communicated with the generator (410), the condensing device (600) comprises a cooling water cavity (620), a condensing air chamber (610) and a first circulating cooling water pipe (630), the condensing air chamber (610) is arranged in the cooling water cavity (620), water in the cooling water cavity (620) can flow through the evaporator (420) through the first circulating cooling water pipe (630) to realize heat exchange, condensed water can be contained at the bottom of the condensing air chamber (610), and a drain valve is arranged at the bottom of the condensing air chamber.
7. The kiln exhaust gas waste heat recovery system of claim 6, wherein the primary kiln (200) and/or the secondary kiln (900) comprises a cooling zone (210), the condensing device (600) further comprises a second circulating cooling water pipe (640), and water in the cooling water cavity (620) can flow through the cooling zone (210) through the second circulating cooling water pipe (640) to realize heat exchange.
8. The kiln exhaust gas waste heat recovery system of claim 6, wherein the condensing device (600) further comprises a third circulating cooling water pipe (650), the wet scrubber is a water curtain scrubber (500), the water curtain scrubber (500) comprises a water tank (510), and water in the cooling water chamber (620) can flow through the water tank (510) through the third circulating cooling water pipe (650) to realize heat exchange.
9. Kiln waste gas and waste heat recovery system according to claim 5, characterized in that the purification device is a molecular sieve purifier (1100).
10. The kiln exhaust gas waste heat recovery system of claim 5, wherein a gas storage tank (800) is further connected between the moisture absorption region (710) and the kiln (900).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110255010.XA CN112933852B (en) | 2021-03-09 | 2021-03-09 | Kiln exhaust gas and waste heat recovery process and system |
| PCT/CN2021/091672 WO2022188254A1 (en) | 2021-03-09 | 2021-04-30 | Recovery process and system for waste gas and waste heat of kilns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110255010.XA CN112933852B (en) | 2021-03-09 | 2021-03-09 | Kiln exhaust gas and waste heat recovery process and system |
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| CN112933852A CN112933852A (en) | 2021-06-11 |
| CN112933852B true CN112933852B (en) | 2025-05-27 |
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| WO (1) | WO2022188254A1 (en) |
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| CN116625132B (en) * | 2023-07-24 | 2023-10-27 | 常州百利锂电智慧工厂有限公司 | Ternary lithium battery kiln tail gas recycling system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215428001U (en) * | 2021-03-09 | 2022-01-07 | 广东邦普循环科技有限公司 | Kiln waste gas waste heat recovery system |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203940546U (en) * | 2014-05-13 | 2014-11-12 | 浙江海洋学院 | A kind of Ship Waste Heat absorption refrigeration runner two stage dehumidify aircondition |
| CN205175150U (en) * | 2015-12-07 | 2016-04-20 | 王立臣 | Device is recycled in reduction of industrial stoves polyoxy burning flue gas |
| JP6988402B2 (en) * | 2017-11-21 | 2022-01-05 | 日立金属株式会社 | Manufacturing method and heat treatment equipment for positive electrode active material for lithium ion secondary batteries |
| CN208520217U (en) * | 2018-05-09 | 2019-02-19 | 长沙为明节能科技有限公司 | The circulating oxygen of lithium ion anode material sintering oven uses system |
| CN110836608B (en) * | 2018-08-15 | 2021-06-22 | 杉杉能源（宁夏）有限公司 | A high-nickel ternary cathode material kiln combustion tail gas recycling system |
| CN210292855U (en) * | 2019-06-12 | 2020-04-10 | 江苏翔鹰新能源科技有限公司 | Atmosphere furnace oxygen combined system for producing lithium ion battery anode material |
| CN110652818A (en) * | 2019-10-16 | 2020-01-07 | 天津巴莫科技有限责任公司 | A kind of cascade utilization method of waste gas in high nickel material production workshop |
| CN110592398A (en) * | 2019-10-30 | 2019-12-20 | 阳江翌川金属科技有限公司 | A kind of ferronickel production equipment |
| CN211261799U (en) * | 2019-11-08 | 2020-08-14 | 成都华西堂环保科技有限公司 | Oxygen circulation system for preparing ternary lithium anode material |
| CN212673860U (en) * | 2020-05-20 | 2021-03-09 | 广东邦普循环科技有限公司 | Oxygen recovery system of anode material atmosphere furnace |
| CN111811286A (en) * | 2020-07-22 | 2020-10-23 | 湖南长远锂科股份有限公司 | Ternary battery cathode material sintered oxygen recovery system |
| CN111811287A (en) * | 2020-07-23 | 2020-10-23 | 湖南长远锂科股份有限公司 | Ternary battery cathode material sintering furnace waste heat recovery system |
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2021
- 2021-03-09 CN CN202110255010.XA patent/CN112933852B/en active Active
- 2021-04-30 WO PCT/CN2021/091672 patent/WO2022188254A1/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215428001U (en) * | 2021-03-09 | 2022-01-07 | 广东邦普循环科技有限公司 | Kiln waste gas waste heat recovery system |
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| CN112933852A (en) | 2021-06-11 |
| WO2022188254A1 (en) | 2022-09-15 |
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