CN110252089A - Coating machine upper layer baking oven organic gas recovery system - Google Patents
Coating machine upper layer baking oven organic gas recovery system Download PDFInfo
- Publication number
- CN110252089A CN110252089A CN201910592724.2A CN201910592724A CN110252089A CN 110252089 A CN110252089 A CN 110252089A CN 201910592724 A CN201910592724 A CN 201910592724A CN 110252089 A CN110252089 A CN 110252089A
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- China
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- accommodating chamber
- adsorbent equipment
- gas
- heat exchanger
- baking oven
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Links
- 238000011084 recovery Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 27
- 238000000576 coating method Methods 0.000 title claims abstract description 27
- 239000003463 adsorbent Substances 0.000 claims abstract description 56
- 238000010521 absorption reaction Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 74
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- B01D53/14—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 absorption
- B01D53/1406—Multiple stage absorption
-
- 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
- B01D53/14—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 absorption
- B01D53/1418—Recovery of products
-
- 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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of coating machine upper layer baking oven organic gas recovery systems, including the first exhaust blower, gas-gas heat exchanger, recovery tower, the second exhaust blower, first circulation device, second circulation device, First Heat Exchanger, the second heat exchanger.Recovery tower includes the first recyclable device and the second recyclable device positioned at the first recyclable device top；The first accommodating chamber, the first adsorbent equipment are equipped in first recyclable device；The second accommodating chamber, the second adsorbent equipment are equipped in second recyclable device.First circulation device is connected to the space being located above the first adsorbent equipment in the first accommodating chamber and the first recyclable device respectively；Second circulation device is connected to the space being located above the second adsorbent equipment in the second accommodating chamber and the second recyclable device respectively.Recovery system in two times adsorbs the organic gas in gas using recovery tower, and absorption is more complete, and the gas flowed from baking oven to recovery tower and the gas converting heat flowed out after recovery tower adsorption treatment are lifted into the temperature of the gas of baking oven.
Description
Technical field
The present invention relates to organic gas recycling fields, more specifically to a kind of coating machine upper layer baking oven organic matter
Gas recovery system.
Background technique
N- methyl gives a tongue-lashing pyrrolidone (1-methyl-2-pyrrolidone, abbreviation NMP), colourless transparent liquid, boiling point 204
DEG C, 95 DEG C of flash-point, viscosity is low, slightly ammonia taste, and chemical stability and thermal stability are good, and polarity is high, and volatility is low, can and water to appoint
The features such as meaning is than dissolving each other.
NMP be lithium ion battery production in discharge exhaust gas main component, be toxic gas, content be 0.06%~
0.5%.If not being recycled to NMP, environmental pollution is not only caused, while also resulting in a large amount of wastes of raw material, institute
It is the important link that environmental protection is influenced in green battery production process to be recycled NMP.
In existing technology, it is not disclosed how after by the discharge recycling of the organic gas such as NMP, the gas of discharge is also allowed
Body recycling is flowed into coating machine oven, keeps air pressure balance, while and gas when maintaining the reflux for be in low temperature and low humidity shape
State avoids impacting coating machine.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of coating machine upper layer baking oven organic gas recovery system.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of coating machine upper layer baking oven organic matter gas
Body recovery system, including the first exhaust blower, gas-gas heat exchanger, recovery tower, the second exhaust blower, first circulation device, second circulation
Device, First Heat Exchanger, the second heat exchanger；
The recovery tower includes the first recyclable device and the second recyclable device positioned at first recyclable device top；
It is equipped in first recyclable device positioned at the first accommodating chamber of bottom and above first accommodating chamber
The first adsorbent equipment；
It is equipped in second recyclable device positioned at the second accommodating chamber of bottom and above second accommodating chamber
The second adsorbent equipment；
The lower space of second adsorbent equipment in the upper end of first adsorbent equipment and second recyclable device
Connection；
The baking oven is equipped with air outlet and air inlet, and first exhaust blower is connected to the air outlet of baking oven, the gas
Gas heat exchanger is equipped with inlet channel, outlet passageway；The side wall of first recyclable device is equipped with air inlet, second recycling
The top of device is equipped with gas outlet；
The both ends of the inlet channel are connected to first exhaust blower and the air inlet respectively, the outlet passageway
Both ends are connected to the air inlet and the second exhaust blower respectively, and first exhaust blower is connected to the air outlet, and described second
Exhaust blower is connected to the gas outlet；
The first circulation device respectively in first accommodating chamber and first recyclable device be located at described first
Solution in first accommodating chamber is pumped to spray above first adsorbent equipment by the space connection above adsorbent equipment
Onto first adsorbent equipment；
The second circulation device respectively in second accommodating chamber and second recyclable device be located at described second
Solution in second accommodating chamber is pumped to spray above second adsorbent equipment by the space connection above adsorbent equipment
Onto second adsorbent equipment；
First adsorbent equipment, the second adsorbent equipment store water respectively, to adsorb the gas to be recycled risen through；
The First Heat Exchanger, which exchanges heat to the solution in first accommodating chamber, to cool down；Second heat exchanger is to described
Solution in two accommodating chambers, which exchanges heat, to cool down.
Preferably, the upper end of first recyclable device is equipped with the ventilation extended upwardly in second recyclable device
Pipe, second accommodating chamber are looped around the snorkel border setting.
Preferably, the upper end of the snorkel, which is equipped with, prevents the liquid on second adsorbent equipment to be flowed into the ventilation
Shielding cover in pipe.
Preferably, the gas-gas heat exchanger is plate heat exchanger.
Preferably, the first circulation device includes the circulating pump outside the recovery tower, and the circulating pump is connected to institute
First accommodating chamber is stated to be connected to the space in first recyclable device above first adsorbent equipment.
Preferably, the recovery system further includes the returnable being connected to the circulating pump.
Preferably, the First Heat Exchanger includes sealed cooling tower, first accommodating chamber and the closed cooling
The pipeline for being connected to, and being connected between first accommodating chamber and the sealed cooling tower by pipeline between tower is equipped with first
Cooling pump makes the solution circulation flow in first accommodating chamber dynamic, exchanges heat with the recirculated cooling water in the sealed cooling tower
It is cooling.
Preferably, second heat exchanger is mounted on the circulation loop of the second circulation device.
Preferably, second heat exchanger is board-like liquid-liquid heat exchanger.
Preferably, the second circulation device include be mounted on the circulation loop of the second circulation device it is second cold
But it pumps, makes the solution circulation flow in first accommodating chamber dynamic, exchange heat and cool down with the recirculated cooling water in second heat exchanger.
Implement coating machine upper layer baking oven organic gas recovery system of the invention, has the advantages that recycling system
System can use recovery tower in two times in gas organic gas adsorb, allow absorption it is more complete, in addition, from baking oven to
The gas of recovery tower flowing and the gas phase flowed out after recovery tower adsorption treatment mutually exchange heat, and are lifted into the temperature of the gas of baking oven
It spends, the liquid in recovery tower also with external heat-exchanging, keeps recovery tower internal temperature to be in low-temperature condition, entire removal process is anhydrous
It is participated in highly humid air, also ensures that the gas flowed into baking oven is in low temperature and low humidity state, avoid to coating machine upper layer oven
It impacts, improves safety.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural principle signal of the coating machine upper layer baking oven organic gas recovery system in the embodiment of the present invention
Figure.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, the coating machine upper layer baking oven organic gas recovery system packet in a preferred embodiment of the invention
Include the first exhaust blower 1, gas-gas heat exchanger 2, recovery tower 3, the second exhaust blower 4, first circulation device 5, second circulation device 6,
One heat exchanger 7, the second heat exchanger 8 have N- methyl in coating machine upper layer baking oven 9 and give a tongue-lashing pyrrolidone, and recovery system can be by baking oven 9
N- methyl is given a tongue-lashing pyrrolidone (NMP) recycling by interior gas discharge, then gas circulation is allowed to flow into baking oven 9, and recovery system also can be used
To recycle the organic gas that other are easily adsorbed with water.
Recovery tower 3 includes the first recyclable device 31 and the second recyclable device 32 positioned at 31 top of the first recyclable device；The
The first absorption positioned at the first accommodating chamber 311 of bottom and above the first accommodating chamber 311 is equipped in one recyclable device 31
Device 312.It is equipped in second recyclable device 32 positioned at the second accommodating chamber 321 of bottom and positioned at 321 top of the second accommodating chamber
The second adsorbent equipment 322.
The upper end of first adsorbent equipment 312 is connected to the lower space of the second adsorbent equipment 322 in the second recyclable device 32,
Gas in first recyclable device 31 can be risen to upwards in the second recyclable device 32 and continues the organic matter that will do not adsorbed completely
Gas absorption recycling.
Baking oven 9 is equipped with air outlet 91 and air inlet 92, and the first exhaust blower 1 is connected to the air outlet 91 of baking oven 9, and gas gas changes
Hot device 2 is equipped with inlet channel, outlet passageway；The side wall of first recyclable device 31 is equipped with air inlet 313, the second recyclable device 32
Top be equipped with gas outlet 323.
The both ends of inlet channel are connected to the first exhaust blower 1 and air inlet 313 respectively, the both ends of outlet passageway respectively with into
Air port 92 is connected to the second exhaust blower 4, and the first exhaust blower 1 is connected to air outlet 91, and the second exhaust blower 4 is connected to gas outlet 323.
First circulation device 5 respectively in the first accommodating chamber 311 and the first recyclable device 31 be located at the first adsorbent equipment 312
The space of top is connected to, and the solution in the first accommodating chamber 311 is pumped to and is sprayed onto the first absorption above the first adsorbent equipment 312
On device 312.
Second circulation device 6 respectively in the second accommodating chamber 321 and the second recyclable device 32 be located at the second adsorbent equipment 322
The space of top is connected to, and the solution in the second accommodating chamber 321 is pumped to and is sprayed onto the second absorption above the second adsorbent equipment 322
On device 322.
First adsorbent equipment 312, the second adsorbent equipment 322 store water respectively, to adsorb the gas to be recycled risen through.
In general, can be respectively formed sorption channel for gas to pass through on the first adsorbent equipment 312, the second adsorbent equipment 322, absorption is logical
Road can be obliquely installed, and adsorption tank or adsorption hole etc. can be set on the side wall of sorption channel, can also be in the side wall of sorption channel
Upper setting web plate or adsorbed film etc., can on the side wall of sorption channel water, allow the organic gas in gas to be adsorbed channel
Water absorption on side wall.After adsorbing a period of time, then respectively to spraying above the first adsorbent equipment 312, the second adsorbent equipment 322
Water allows new water to sweep away the solution for having adsorbed organic gas, and new water adsorbs organic gas again again.
Preferably, the first adsorbent equipment 312 may also include gas-liquid separator, by the approach gas-liquid separation again of processed exhaust gas
Device is separated, and the water loss in the first recyclable device 31 is prevented.
First Heat Exchanger 7, which exchanges heat to the solution in the first accommodating chamber 311, to cool down；Second heat exchanger 8 is to the second accommodating chamber 321
Interior solution, which exchanges heat, to cool down.
Gas in baking oven 9 enters recovery tower 3, upward uphill process through the first exhaust blower 1, inlet channel, air inlet 313
In, organic gas is adsorbed by the water on the first adsorbent equipment 312, the second adsorbent equipment 322, then in first circulation device 5, the
The solution for being adsorbed with organic gas is swept away after two circulator 6 water spray.
Recovery system can use recovery tower 3 and adsorb in two times to the organic gas in gas, make absorption more complete
Entirely, it in addition, the gas flowed from baking oven 9 to recovery tower 3 and the gas phase flowed out after 3 adsorption treatment of recovery tower mutually exchange heat, mentions
The temperature for entering the gas of baking oven 9 is risen, the liquid in recovery tower 3 also with external heat-exchanging, keeps 3 internal temperature of recovery tower to be in low
Temperature state, entire removal process is anhydrous and highly humid air participates in, and also ensures that the gas flowed into baking oven 9 is in low temperature and low humidity shape
State avoids impacting coating machine upper layer oven 9, improves safety.
Coating machine operating temperature is generally 110~130 DEG C, and the exhaust gas containing NMP and moisture, baking oven 9 is constantly discharged in when operation
The first exhaust blower 1 of section extracts the fresh air circulation that hot wind in baking oven 9 is aided with portion of external introducing, to achieve the purpose that dry pole piece,
Fresh air is heated to technological temperature by modes such as electricity, vapour, oil.The high-temp waste gas that gas-gas heat exchanger 2 is generated using coating machine as heat source,
Enter the fresh air of coating machine by the heating of gas-gas heat exchanger 2, temperature rise is up to 50 DEG C or more after fresh air heating.
Gas-gas heat exchanger 2 is plate heat exchanger, can guarantee to enter with the heat exchange area of lift gas, improving heat exchanging efficiency
The gas dry of baking oven 9.
First circulation device 5 includes the circulating pump 51 outside recovery tower 3, and circulating pump 51 is connected to 311 He of the first accommodating chamber
Positioned at the space connection of 312 top of the first adsorbent equipment in first recyclable device 31, the solution in the first accommodating chamber 311 is pumped
It is sprayed on the first adsorbent equipment 312 to the top of the first adsorbent equipment 312, solution is allowed to continue to adsorb organic gas.Circulating pump
Liquid in tower is introduced the first adsorbent equipment 312 by 51 to be recycled, sufficiently progress heat energy displacement, can effectively reduce water money
The waste in source, convenient for improving the concentration of NMP recovered liquid.
Recovery system further includes the returnable 52 being connected to circulating pump 51, when the solution absorption in the first accommodating chamber 311
Organic gas concentration it is up to standard after, so that it may returnable 52 will be retracted to and do not recycled, after exhausting again to first absorption dress
It sets and sprays new pure water on 312, again sorption cycle.
First Heat Exchanger 7 includes sealed cooling tower, is connected between the first accommodating chamber 311 and sealed cooling tower by pipeline
It is logical, and the pipeline being connected between the first accommodating chamber 311 and sealed cooling tower is equipped with the first cooling pump 71, allow the first accommodating chamber
Solution circulation flow in 311 is dynamic, exchanges heat and cools down with the recirculated cooling water in sealed cooling tower.
First Heat Exchanger 7 allows the temperature of the solution in the first accommodating chamber 311 to be in low-temperature condition, avoids having inhaled in solution
Attached organic gas volatilization.
Further, the second heat exchanger 8 is mounted on the circulation loop of second circulation device 6, in the second accommodating chamber 321
Solution circulation flow it is dynamic when, exchange heat and cool down with the recirculated cooling water in the second heat exchanger 8, the second heat exchanger 8 allows the second accommodating chamber
The temperature of solution in 321 is in low-temperature condition, and the organic gas adsorbed in solution is avoided to volatilize.Preferably, second
Heat exchanger 8 is board-like liquid-liquid heat exchanger, promotes heat exchange area and heat exchange efficiency.
Second circulation device 6 includes the second cooling pump 61 for being mounted on the circulation loop of second circulation device 6, allows first
Solution circulation flow in accommodating chamber 311 is dynamic, exchanges heat and cools down with the recirculated cooling water in the second heat exchanger 8.
Organic gas due to entering recovery tower 3 is most of have been fallen by the absorption of the first recyclable device 31, only portion less
Branch rises to the second recyclable device 32, thus the solution in the second accommodating chamber 321 contain the concentration of organic gas can be lower,
It can recycle for a long time, not have to discharge recycling.In addition, the solution in the second accommodating chamber 321 contains the concentration of organic gas
Can be lower, the cooling for the solution that can also be allowed in the second accommodating chamber 321 and circulation are realized on the circuit of second circulation device 6,
It has been not concerned about volatilization, has also reduced the energy for making solution circulation flow dynamic.
Preferably, the upper end of the first recyclable device 31 is equipped with the snorkel 314 extended upwardly in the second recyclable device 32,
Second accommodating chamber 321 is looped around the setting of 314 border of snorkel.Snorkel 314, which upwardly extends, not to be influenced gas and flows up and
Solution circulates in two accommodating chambers 321.
Further, the upper end of snorkel 314, which is equipped with, prevents the liquid on the second adsorbent equipment 322 to be flowed into snorkel
Shielding cover 315 in 314 can enter the second recyclable device 32 to avoid the solution of 32 internal circulation flow of the second recyclable device,
It keeps the total amount of solution in the second recyclable device 32 not reduce, guarantees that absorption is stablized.
At tower-like, exhaust gas enters 3 equipment of recovery tower from the bottom of tower, adsorbs, gives up by the solution in the first accommodating chamber 311
NMP in gas is substantially all molten in water and steam.The first adsorbent equipment of approach 312 is divided processed exhaust gas again
From the second adsorbent equipment of tower top 322 excessively is rinsed, and adsorbs the NMP in exhaust gas thoroughly.
Since the exhaust gas temperature entered from tower bottom is higher, NMP is thoroughly recycled, there are the mistakes of an energy replacement
Journey, so will cause a part of moisture evaporation during NMP recycling.
Tower body can be customized according to the requirement of client, and tower body diameter is bigger, and waste gas absorption amount is bigger.
Exhaust gas is just substantially absorbed by first recyclable device 31 completely, using the second adsorbent equipment 322, energy
The rate of recovery of NMP is set to reach 99% or more, the exhaust gas after processing can be emptied directly, it does not need to carry out other processing again,
Zero-emission can be realized substantially.
In general, exhaust gas is after the cooling recycling of the level-one of the first recyclable device 31, temperature is down to 35 DEG C, and exhaust gas passes through first
After the second level freezing recycling of recyclable device 31, temperature is down to 15 DEG C.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of coating machine upper layer baking oven organic gas recovery system, which is characterized in that including the first exhaust blower (1), gas gas
Heat exchanger (2), recovery tower (3), the second exhaust blower (4), first circulation device (5), second circulation device (6), First Heat Exchanger
(7), the second heat exchanger (8)；
The recovery tower (3) includes the first recyclable device (31) and the second recycling for being located at the first recyclable device (31) top
Device (32)；
It is equipped in first recyclable device (31) positioned at the first accommodating chamber (311) of bottom and positioned at first receiving
The first adsorbent equipment (312) above chamber (311)；
It is equipped in second recyclable device (32) positioned at the second accommodating chamber (321) of bottom and positioned at second receiving
The second adsorbent equipment (322) above chamber (321)；
Second adsorbent equipment (322) in the upper end of first adsorbent equipment (312) and second recyclable device (32)
Lower space connection；
The baking oven (9) is equipped with air outlet (91) and air inlet (92), the outlet air of first exhaust blower (1) and baking oven (9)
Mouth (91) connection, the gas-gas heat exchanger (2) are equipped with inlet channel, outlet passageway；The side wall of first recyclable device (31)
It is equipped with air inlet (313), the top of second recyclable device (32) is equipped with gas outlet (323)；
The both ends of the inlet channel are connected to first exhaust blower (1) and the air inlet (313) respectively, and the outlet is logical
The both ends in road are connected to the air inlet (92) and the second exhaust blower (4) respectively, first exhaust blower (1) and the air outlet
(91) it is connected to, second exhaust blower (4) is connected to the gas outlet (323)；
The first circulation device (5) is located at in first accommodating chamber (311) and first recyclable device (31) respectively
Space connection above first adsorbent equipment (312), the solution in first accommodating chamber (311) is pumped to described
It is sprayed on first adsorbent equipment (312) above first adsorbent equipment (312)；
The second circulation device (6) is located at in second accommodating chamber (321) and second recyclable device (32) respectively
Space connection above second adsorbent equipment (322), the solution in second accommodating chamber (321) is pumped to described
It is sprayed on second adsorbent equipment (322) above second adsorbent equipment (322)；
First adsorbent equipment (312), the second adsorbent equipment (322) store water respectively, are risen through with absorption to be recycled
Gas；
The First Heat Exchanger (7), which exchanges heat to the solution in first accommodating chamber (311), to be cooled down；Second heat exchanger (8)
It exchanges heat and cools down to the solution in second accommodating chamber (321).
2. baking oven organic gas recovery system in coating machine upper layer according to claim 1, which is characterized in that described first
The upper end of recyclable device (31), which is equipped with, extends upwardly to snorkel (314) in second recyclable device (32), and described second
Accommodating chamber (321) is looped around the setting of the snorkel (314) border.
3. baking oven organic gas recovery system in coating machine upper layer according to claim 2, which is characterized in that the ventilation
The upper end of pipe (314), which is equipped with, prevents the liquid on second adsorbent equipment (322) to be flowed into the screening in the snorkel (314)
Door (315).
4. baking oven organic gas recovery system in coating machine upper layer according to any one of claims 1 to 3, feature exist
In the gas-gas heat exchanger (2) is plate heat exchanger.
5. baking oven organic gas recovery system in coating machine upper layer according to any one of claims 1 to 3, feature exist
In the first circulation device (5) includes being located at the circulating pump (51) of the recovery tower (3) outside, circulating pump (51) connection
It is located above first adsorbent equipment (312) in first accommodating chamber (311) and first recyclable device (31)
Space connection.
6. baking oven organic gas recovery system in coating machine upper layer according to claim 5, which is characterized in that the recycling
System further includes the returnable (52) being connected to the circulating pump (51).
7. baking oven organic gas recovery system in coating machine upper layer according to any one of claims 1 to 3, feature exist
In, the First Heat Exchanger (7) includes sealed cooling tower, first accommodating chamber (311) and the sealed cooling tower it
Between the pipeline that is connected to, and is connected between first accommodating chamber (311) and the sealed cooling tower by pipeline be equipped with the
One cooling pump (71) makes the solution circulation flow in first accommodating chamber (311) dynamic, with the circulation in the sealed cooling tower
Cooling water heat exchange cooling.
8. baking oven organic gas recovery system in coating machine upper layer according to any one of claims 1 to 3, feature exist
In second heat exchanger (8) is mounted on the circulation loop of the second circulation device (6).
9. baking oven organic gas recovery system in coating machine upper layer according to claim 8, which is characterized in that described second
Heat exchanger (8) is board-like liquid-liquid heat exchanger.
10. baking oven organic gas recovery system in coating machine upper layer according to claim 8, which is characterized in that described
Two circulator (6) include the second cooling pump (61) being mounted on the circulation loop of the second circulation device (6), are allowed described
Solution circulation flow in first accommodating chamber (311) is dynamic, exchanges heat and cools down with the recirculated cooling water in second heat exchanger (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592724.2A CN110252089A (en) | 2019-07-03 | 2019-07-03 | Coating machine upper layer baking oven organic gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592724.2A CN110252089A (en) | 2019-07-03 | 2019-07-03 | Coating machine upper layer baking oven organic gas recovery system |
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| CN110252089A true CN110252089A (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910592724.2A Pending CN110252089A (en) | 2019-07-03 | 2019-07-03 | Coating machine upper layer baking oven organic gas recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354327A (en) * | 2020-07-15 | 2021-02-12 | 万向一二三股份公司 | Low-energy-consumption NMP gas recovery tower and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108452639A (en) * | 2017-12-26 | 2018-08-28 | 陈卓 | The heat recovery and nmp solvent recovery method and device of a kind of lithium battery coating machine exhaust |
| CN210278712U (en) * | 2019-07-03 | 2020-04-10 | 深圳市百瑞空气处理设备有限公司 | Organic gas recovery system for upper-layer drying oven of coating machine |
-
2019
- 2019-07-03 CN CN201910592724.2A patent/CN110252089A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108452639A (en) * | 2017-12-26 | 2018-08-28 | 陈卓 | The heat recovery and nmp solvent recovery method and device of a kind of lithium battery coating machine exhaust |
| CN210278712U (en) * | 2019-07-03 | 2020-04-10 | 深圳市百瑞空气处理设备有限公司 | Organic gas recovery system for upper-layer drying oven of coating machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354327A (en) * | 2020-07-15 | 2021-02-12 | 万向一二三股份公司 | Low-energy-consumption NMP gas recovery tower and system |
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