CN108889089A - A kind of compressed air is dry, purifying process and device - Google Patents
A kind of compressed air is dry, purifying process and device Download PDFInfo
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- CN108889089A CN108889089A CN201810975292.9A CN201810975292A CN108889089A CN 108889089 A CN108889089 A CN 108889089A CN 201810975292 A CN201810975292 A CN 201810975292A CN 108889089 A CN108889089 A CN 108889089A
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- dry
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 124
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 31
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 29
- 238000000746 purification Methods 0.000 claims abstract description 27
- 238000001179 sorption measurement Methods 0.000 claims abstract description 22
- 230000008929 regeneration Effects 0.000 claims abstract description 14
- 238000011069 regeneration method Methods 0.000 claims abstract description 14
- 239000003463 adsorbent Substances 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 230000007420 reactivation Effects 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 206010013786 Dry skin Diseases 0.000 claims 3
- 238000012797 qualification Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000007605 air drying Methods 0.000 abstract description 5
- 230000005923 long-lasting effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 109
- 238000012360 testing method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide 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
- B01D53/02—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0012—In-line filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- 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
-
- 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
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- 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
Abstract
It is unable to satisfy the technical issues of high-quality battery production requires to solve existing absorbed type drying technique and equipment, the present invention provides a kind of compressed air drying, purifying process and devices.Compressed air is dry, purifying process includes adsorption and purification and regeneration link；Regeneration link includes pressure release, atmosphere heating, dry gas heats, dry gas blows cold, closed cycle and blows cold and press.The present invention can be less than the finished product gas of 5ppm long lasting for output -72 DEG C of dew points at normal pressure~(- 78) DEG C, carbon dioxide content, be able to satisfy high-quality battery production gas requirement.
Description
Technical field
The present invention relates to a kind of compressed air drying, purifying process and devices.
Background technique
Lithium battery needs to use in process of production clean, moisture and carbon dioxide product gas up to standard, the product
Water and carbon dioxide content in gas directly affect the cruising ability of lithium battery.Existing battery production enterprise is only to production ring
The moisture in border limits, and ignores influence of the carbon dioxide to battery performance, and existing compressed air post-processing is divided into sky
Point and conventional absorbed type drying, since space division investment cost is high, therefore the absorbed type drying technique of big more options routine；It is existing
Drier design mainly considers the removal of moisture, only can remove removing carbon dioxide at switching initial stage, and it is short to hold time, but existing
High-quality production line for manufacturing battery need persistently to export moisture (dew point<- 70 DEG C) and carbon dioxide (<5ppm) finished product up to standard
Gas, therefore existing drying equipment is unable to satisfy.And existing some absorbed type drying techniques can remove the moisture in compressed air, and
The desorption of carbon dioxide is not considered, therefore carbon dioxide content is high in product gas, about 500ppm is not able to satisfy high-quality battery
Working condition；It is existing there are also some absorbed type drying techniques although it is contemplated that the desorption of carbon dioxide, but cannot continue
The finished product gas for exporting low carbon dioxide content, is unable to satisfy the production requirement of high-quality battery.
Summary of the invention
It is unable to satisfy the technical issues of high-quality battery production requires to solve existing absorbed type drying technique and equipment,
The present invention provides a kind of compressed air drying, purifying process and devices.
Technical solution of the invention is：
A kind of compressed air is dry, purifying process, is characterized in that, includes the following steps：
1】It is regenerated using drying tower A adsorption and purification, drying tower B
1.1】Adsorption and purification
1.1.1】Solid particle contained in unstrpped gas, liquid water are separated, filtered；
1.1.2】Make through step 1.1.1】Gained gas is flowed through in the drying tower A for being mounted with the first adsorbent and is carried out after processing
It is adsorbed by drying and purifies, remove the moisture and carbon dioxide in gas；
1.1.3】It will be through step 1.1.2】Gained gas is filtered after processing, removes the first adsorbent powder in gas
Dirt obtains finished product gas；
1.1.4】It will be through step 1.1.3】Gained finished product gas a part introduces gas system of using after processing, after another part introducing
Continuous link；
1.2】Regeneration
1.2.1】Release
If the pressure in current drying tower B is greater than normal pressure, step is entered after the pressure in the drying tower B is unloaded to normal pressure
Rapid 1.2.2】；
1.2.2】Dry gas heating
1.2.2.1】Dry gas to the qualified being introduced from outside into and/or through step 1.1.4】The finished product gas of introducing carries out
Heating；
1.2.2.2】By step 1.2.2.1】Processing gained gas introduce the drying tower B to the second adsorbent in tower into
Row heating parsing makes residual moisture in the second adsorbent and carbon dioxide as hot gas is discharged from drying tower B；
1.2.3】Closed cycle is blown cold
1.2.3.1】The drying tower B is extracted using blower and the interior gas of threading a pipe that is connected with drying tower B；
1.2.3.2】Gas cooling to blower output；
1.2.3.3】By step 1.2.3.2】Gained gas introduces in the drying tower B, to the second absorption in drying tower B
Agent blow cold, and the amount of residual heat of the second adsorbent is discharged with hot gas from drying tower B；
1.2.3.4】To step 1.2.3.3】The hot gas of drying tower B discharge cools down；
1.2.3.5】By step 1.2.3.4】Gained gas introduces the blower；
1.2.3.6】Repeat step 1.2.3.2】-1.2.3.5】, circulation temperature lowering is carried out to the drying tower B；
1.3】Press
By step 1.4】Gained part finished product gas introduces the drying tower B, and pressure in drying tower B is made to rise to setting value；
2】Switching
It being switched over according to job requirement, after switching, the drying tower A is regenerated, and drying tower B carries out adsorption and purification,
Adsorption and purification and regeneration principle and step 1】It is identical.
To reduce cost, in the step 1.2.2】Before, atmosphere heating is first carried out：To being mounted with the dry of the second adsorbent
It is sent into the atmosphere after heating in dry tower B, heating parsing is carried out to the second adsorbent, makes moisture and titanium dioxide in the second adsorbent
Carbon with hot gas from drying tower B be discharged.
Preferably, it is 80-160 degrees Celsius that atmosphere heating link, which is heated to reactivation outlet temperature, the duration of heat at least 1
Hour；It is 120-180 degrees Celsius, the duration of heat at least 10 minutes that dry gas heating link, which is heated to reactivation outlet temperature,.
Preferably, it is 80-120 degrees Celsius that atmosphere heating link, which is heated to reactivation outlet temperature, and the duration of heat, 2-4 was small
When, it is 140-160 degrees Celsius that dry gas heating link, which is heated to reactivation outlet temperature, duration of heat 1-2 hour.
Preferably, step 1.2.3】Closed cycle, which is blown, is cooled to reactivation outlet temperature for 25-40 degree.
Preferably, to further increase finished product gas index in the step 1.2.2】Dry gas heating and step 1.2.3】Enclosed
Circulation is blown between cold, is increased dry gas and is blown cold link：It is qualified that water and carbon dioxide indicator are continuously introduced into the drying tower B
Dry gas blows cold setting time, and the second adsorbent in drying tower B is parsed in cooling in the process.
Preferably, the dry gas blows the cold duration at least 10 minutes, and dry gas flow is equal to raw gas flow ÷ P, and P is original
Expect gas operating pressure.
Further, step 3】Described in switching be to pass through valve transfer.
Further, when containing fluid oil in the unstrpped gas of air compressor machine output, step 1】Also cope with liquid therein
Oil is separated, is filtered.
Further, step 1】Described in the first adsorbent and the second adsorbent be activated alumina+molecular sieve.
Invention also provides a kind of compressed air dryings, purification devices, are characterized in that：Including by drying tower
The adsorbent of water removal and carbon dioxide is respectively arranged in the drier that A and drying tower B is constituted, drying tower A and drying tower B；It is dry
The upper and lower port of device is connected to upper piping and lower piping respectively, and upper piping is by the 4th valve in parallel, the 8th valve and parallel connection
Third valve, the 7th valve in parallel are constituted, and lower piping is by the first valve in parallel, the second valve of the 5th valve and parallel connection, the
Six valve in parallel are constituted；
It is provided with the 5th connecting tube between first valve, the 5th valve, is disposed with prefilter in the 5th connecting tube
Device, gas-liquid separator and preposition water cooler, the arrival end of preposition water cooler are the air inlet of whole device；
It is provided with the 7th connecting tube between first valve, the second valve, is provided with the 12nd valve in the 7th connecting tube；
It is provided with the 6th connecting tube between second valve, the 6th valve, the 14th valve is installed in the 6th connecting tube；
It is provided with the 8th connecting tube between 6th valve, the 5th valve, the 13rd valve is installed in the 8th connecting tube；
The second connecting tube is provided between third valve, the 7th valve, the other end of the second connecting tube is divided into two branches：
It is wherein disposed with the 18th valve and the first surface air cooler in the first branch, having heaters, are set gradually in second branch
17 valves and blower；The other end of the first branch and second branch converges at the 9th connecting tube；It is provided in 9th connecting tube
16th valve；
Third connecting tube is provided between heater and the 17th valve, third connecting tube passes through the 20th valve and first
Connecting tube connection；The tenth connecting tube communicated therewith is additionally provided in third connecting tube, and the tenth connecting tube is located at the 20th valve
Between door and heater；The 21st valve is provided in tenth connecting tube；The 4th is provided between 17th valve and blower
Connecting tube is disposed with the second surface air cooler and the 15th valve, the other end and the 6th of the 4th connecting tube in the 4th connecting tube
Connecting tube is connected；
It is provided with the first connecting tube between 4th valve, the 8th valve, postposition filtering is disposed in the first connecting tube
The outlet end of device is the gas outlet of whole device；
First connecting tube also passes through the 19th valve and is connected to the second connecting tube；
The 9th valve, the tenth valve and second are connected separately on gas-liquid separator, fore filter and post-filter
12 valves.
Further, further include preposition accurate filter for removing fluid oil and for removing adsorbent dust after
Set accurate filter；Along airflow direction, the rear end of the fore filter is arranged in the preposition accurate filter, and postposition is accurate
The rear end of the post-filter is arranged in filter；The outlet end of the postposition accurate filter is the outlet of whole device
Mouthful；The 11st valve and the 23rd valve are respectively arranged on preposition accurate filter and postposition accurate filter.Preposition essence
Close filter refers to filter of the precision less than 1 milligram/cubic metre；It is 0.1 that postposition accurate filter, which refers to that filtering accuracy is less than,
The filter of micron.
Beneficial effects of the present invention：
1, the present invention can be long lasting for output -72 DEG C of dew points at normal pressure~(- 78) DEG C, carbon dioxide content less than 5ppm's
Finished product gas is able to satisfy high-quality battery production gas requirement.
2. the present invention reduces investment and operating cost by carrying out atmosphere heating before dry gas heats.
3. the present invention blows cold using dry gas existing in Ta Nei and pipeline progress closed cycle, running cost further reduced
With the index of finished product gas can be met under conditions of only consuming a small amount of finished product gas.
4. the present invention blows cold link by blowing increase dry gas between cold in dry gas heating and closed cycle, washed by dry gas
Adsorbent further improves the index of finished product gas.
Detailed description of the invention
Fig. 1 is the process flow chart of absorption link of the embodiment of the present invention.
Fig. 2 is the process flow chart of regeneration link of the embodiment of the present invention.
Fig. 3 is the schematic illustration of air dehydration of the embodiment of the present invention, carbon dioxide removal device.
Description of symbols：
The preposition water cooler of 1-, 2- gas-liquid separator, 3- fore filter, the preposition accurate filter of 4-, 5- postposition are accurate
Filter, 6- post-filter, 7- heater, the first surface air cooler of 8-, the second surface air cooler of 9-, 10- drier, the upper piping of 11-,
Piping under 12-, 13- blower, 14- air inlet, the gas outlet 15-；
The first connecting tube of 16-, the second connecting tube of 17-, the 171- first branch, 172- second branch, 18- third connecting tube,
The 4th connecting tube of 19-, the 5th connecting tube of 20-, the 6th connecting tube of 21-, the 7th connecting tube of 22-, the 8th connecting tube of 23-, 24- the 9th
Connecting tube, the tenth connecting tube of 25-；The first valve of A1-, the second valve of A2-, A3- third valve, the 4th valve of A4-, B1- the 5th
Valve, the 6th valve of B2-, the 7th valve of B3-, the 8th valve of B4-, the 9th valve of F1-, the tenth valve of F2-, the 11st valve of F3-
Door, the 12nd valve of F4-, the 13rd valve of F5-, the 14th valve of F6-, the 15th valve of F7-, the 16th valve of F8-, F9-
17th valve, the 18th valve of F10-, the 19th valve of F11-, the 20th valve of F12-, the 21st valve of F13-, F14-
22nd valve, the 23rd valve of F15-.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1 and Figure 2, air dehydration provided in this embodiment, carbon dioxide removal technique, include the following steps：
1】It is regenerated using drying tower A adsorption and purification, drying tower B
1.1】Adsorption and purification
1.1.1】Solid particle contained in unstrpped gas, liquid water and fluid oil are separated, filtered；
1.1.2】It will be through step 1.1.1】Gained gas is introduced in the drying tower A for being mounted with the first adsorbent and is carried out after processing
It is adsorbed by drying and purifies, remove the moisture and carbon dioxide in gas；Adsorbent can be activated alumina+molecular sieve；
1.1.3】It will be through step 1.1.2】Gained gas is filtered after processing, removes the first adsorbent powder in gas
Dirt, finished product gas needed for obtaining user；
1.1.4】It will be through step 1.1.3】Gained finished product gas a part introducing user's uses gas system, another part after processing
Introduce follow-up link；
1.2】Regeneration
1.2.1】Release
If the pressure in current drying tower B is greater than normal pressure (i.e. environmental pressure), by the pressure in the drying tower B unload to
1.2.2 is entered step after normal pressure】；If pressure is normal pressure in current drying tower B, it is directly entered step 1.2.2】；
1.2.2】It is 80-120 degrees Celsius that atmosphere, which is heated to reactivation outlet temperature, the duration of heat about 2-4h：
It is sent into the atmosphere after heating into the drying tower B for be mounted with the second adsorbent, the second adsorbent in tower is carried out
Heating parsing makes moisture in the second adsorbent and carbon dioxide as hot gas is discharged from drying tower B；
1.2.3】It is 140-160 degree, the duration of heat about 1-2h that dry gas, which is heated to reactivation outlet temperature,：
1.2.3.1】Dry gas to the qualified being introduced from outside into and through step 1.1.4】The finished product gas of introducing is added
Heat；
1.2.3.2】By step 1.2.3.1】Processing gained portion gas, which introduces the drying tower B, to be continued to second in tower
Adsorbent carries out heating parsing, makes residual moisture in the second adsorbent and carbon dioxide as hot gas is discharged from drying tower B；
1.2.4】Dry gas blows cold
The dry gas that qualified is continuously introduced into the drying tower B, which is blown, is cooled to few 10 minutes, in the process drying tower B
Interior adsorbent is parsed in cooling；
1.2.5】Closed cycle, which is blown, is cooled to reactivation outlet temperature for 25-40 degree：
1.2.5.1】The drying tower B is extracted using blower and the interior gas of threading a pipe that is connected with drying tower B；
1.2.5.2】Gas cooling to blower output；
1.2.5.3】By step 1.2.5.2】Gained gas introduces in the drying tower B, to the second adsorbent in tower into
Row blows cold, and the amount of residual heat of the second adsorbent is discharged with hot gas from drying tower B；
1.2.5.4】To step 1.2.5.3】The hot gas of drying tower B discharge cools down；
1.2.5.5】By step 1.2.5.4】Gained gas introduces the blower；
1.2.5.6】Repeat step 1.2.5.2】-1.2.5.5】, closed cycle cooling is carried out to the drying tower B；
1.3】Press
By step 1.1.4】Gained part finished product gas introduces the drying tower B, rises to pressure and sets
Definite value (suitable with pressure in drying tower A)；
2】Switching
It switches over according to job requirement (since the drying tower A finished product gas index persistently exported can have as time goes by
One downward trend, when the finished product gas index of drying tower A output requires the index upper limit close to user, it is necessary to switch, benefit
With drying tower B adsorption and purification, required with guaranteeing that the finished product gas index exported in whole process meets user always), after switching, institute
It states drying tower A to be regenerated, drying tower B carries out adsorption and purification, adsorption and purification and regeneration principle and step 1】It is identical.
Not aqueous, nontoxic inert gas can be used in the dry gas for the qualified that the present invention is introduced from outside into.
Experimental Comparison verifying：
Below by way of several groups of test datas, illustrate purification effect of the invention, shown in table specific as follows：
Above-mentioned data are that adsorbent loads about 175kg, charge flow rate 2Nm3/ min, operating pressure 0.4barg, air inlet
Temperature is the test data under the conditions of 12 DEG C.Wherein, test 1 and test 2 are existing drying, purifying process data, test 3 Hes
Test 4 is drying of the invention, purifying process data；As can be seen from the above table：Existing drying, purifying process gas outlet are overflowed
CO2Time of the content greater than 5ppm is 2-2.5 hours (single column adsorption and purification), and drying purifying process gas outlet of the invention is overflow
CO out2Time of the content greater than 5ppm is 4-5 hours (single column adsorption and purification), illustrates that absorption of the invention, purification capacity are stronger,
It being capable of more longlasting output dew points at normal pressure -72~(- 78) DEG C, CO2Content is less than the finished product gas of 5ppm.
As shown in figure 3, compressed air provided in an embodiment of the present invention is dry, purification devices, including by drying tower A and drying
The drier 10 that tower B is constituted, the upper and lower port of drier 10 is connected to upper piping 11 and lower piping 12 respectively, upper piping 11 by
The third valve A3 of in parallel the 4th valve A4, the 8th valve B4 and parallel connection, the 7th valve B3 parallel connection are constituted, and lower piping 12 is by simultaneously
The first valve A1, the 5th valve B1 of connection and the second valve A2 of parallel connection, the 6th valve B2 parallel connection are constituted；
It is provided with the 5th connecting tube 20 between first valve A1, the 5th valve B1, is disposed in the 5th connecting tube 20
Preposition accurate filter 4, fore filter 3, gas-liquid separator 2 and preposition water cooler 1, the arrival end of preposition water cooler 1 are whole
The air inlet 14 of a device；
It is provided with the 7th connecting tube 22 between first valve A1, A2, is provided with the 12nd valve F4 in the 7th connecting tube 22；
It is provided with the 6th connecting tube 21 between second valve A2, the 6th valve B2, is equipped with the tenth in the 6th connecting tube 21
Four valve F6；
It is provided with the 8th connecting tube 23 between the 6th valve B2 of valve, the 5th valve B1, is equipped in the 8th connecting tube 23
13rd valve F5 (is equipped with muffler on pipeline on the right of F5 in Fig. 3)；
The second connecting tube 17 is provided between third valve A3, the 7th valve B3, the other end of the second connecting tube 17 is divided into
Two branches：The 18th valve F10 and the first surface air cooler 8 are wherein disposed in the first branch 171, in second branch 172
Set gradually having heaters 7, the 17th valve F9 and blower 13；The other end of the first branch 171 and second branch 172 converges at
9th connecting tube 24；The 16th valve F8 (muffler is installed on the pipeline of the left side F8 in Fig. 3) is provided in 9th connecting tube 24；
Third connecting tube 18 is provided between heater 7 and the 17th valve F9, third connecting tube 18 passes through the 20th valve
Door F12 is connected to the first connecting tube 16；The tenth connecting tube 25 communicated therewith is additionally provided in third connecting tube 18, and the tenth connects
Adapter tube 25 is between the 20th valve F12 and heater 7；The 21st valve F13 is provided in tenth connecting tube 25；Tenth
It is provided with the 4th connecting tube 19 between seven valve F9 and blower 13,9 He of the second surface air cooler is disposed in the 4th connecting tube 19
The other end of 15th valve F7, the 4th connecting tube 19 are connected with the 6th connecting tube 21；
It is provided with the first connecting tube 16 between 4th valve A4, the 8th valve B4, is disposed in the first connecting tube 16
Post-filter 6, postposition accurate filter 5, the outlet end of postposition accurate filter 5 are the gas outlet 15 of whole device；
First connecting tube 16 is also connected to by the 19th valve F11 with the second connecting tube 17；
Gas-liquid separator 2, fore filter 3, preposition accurate filter 4, postposition accurate filter 5 and post-filter 6
On be connected separately with the 9th valve F1, the tenth valve F2, the 11st valve F3, the 23rd valve F15 and the 22nd valve
F14.Valve F1, F2, F3 are blowdown valve, can exclude air inlet entrained solid particle, liquid water and fluid oil；Valve F14 and
F15 is manual blowdown valve, can exclude the dust of absorbent atomizing, extends filter element life.
Below in conjunction with Fig. 3, illustrate the course of work of above-mentioned compressed air drying, purification devices：
Drying tower A carries out drying tower B when adsorption and purification work and carries out adsorbent reactivation；Drying tower B regeneration ending, two dry
Dry tower is switched over by valve；After switching, drying tower B carries out adsorption and purification work, and drying tower A carries out adsorbent reactivation；Such as
This circulation.Specially：
1】Drying tower A adsorption and purification, drying tower B regeneration：
1.1】Adsorption and purification：
Room temperature saturated moist air (unstripped gas) from air compressor machine is through preposition water cooler 1, gas-liquid separator 2, preposition mistake
Filter 3 and preposition accurate filter 4 remove solid particle in unstripped gas, after liquid water and fluid oil, through the first valve A1 into
Enter adsorption tower A, adsorption tower A is provided with the adsorbent of moisture removal and carbon dioxide gas, after deviating from water and carbon dioxide, through the
After four valve A4, post-filter 6 and postposition accurate filter 5 remove the adsorbent dust carried secretly in gas, output oil, water,
Dirt, carbon dioxide pure air up to standard.
1.2】Regeneration：
1.2.1】Release：
It first passes through the 13rd valve F5 and unloads drying tower B to low pressure in the pressure in last adsorption and purification stage, then open
The 6th valve B2 of valve, the 7th valve B3, the 14th valve F6 are by heater 7, drying tower B and associated conduit (solid square in Fig. 3
The pipeline that shape is marked) interior pressure unloads to normal pressure.
1.2.2】Atmosphere heating：
Open the 6th valve B2 of valve, the 14th valve F6, the 7th valve B3, the 17th valve F9, the 16th valve F8,
Blower 13 and heater 7, blower 13 suck atmosphere, and after heated device 7 heats, hot gas enters drying tower B to the adsorbent in tower
Heating parsing is carried out, gas after heating carries moisture in adsorbent and carbon dioxide passes through the 6th valve B2 of valve, the tenth
Four valve F6 drain into atmosphere, when reactivation outlet temperature reaches 80-120 degrees Celsius, close blower 13 and the 17th valve F9；
1.2.3】Dry gas heating：
The requirement of remaining aqueous figureofmerit cannot be reached by inhaling adsorbent residual water content after atmosphere heats due to blower 13, therefore
It needs that part dry gas is taken to carry out reheating to adsorbent, is persistently exported with reaching to meet in adsorbent absorption phase setting time
Qualified gas, second heating stage process are：The 20th valve F12 is opened, part finished product gas (dry gas) is taken to enter heater 7
(also can enter heater 7 by the dry gas of the 21st external qualified of valve F13), heater 7 works on, by dry gas
Enter drying tower B through the 7th valve B3 after being heated to 140-160 degrees Celsius to continue to carry out heating parsing to adsorbent, after heating
Gas carries moisture remaining in adsorbent and drains into atmosphere through the 6th valve B2, the 14th valve F6；
1.2.4】Dry gas blows cold：
After reheating, heater 7 is closed, dry gas is persistently inputted, utilizes 7 surface of heater and drying tower B interior suction
The energy of attached dose of storage continues to parse adsorbent, parses in cooling, is blown and is cooled to less after ten minutes using dry gas, closed
20th valve F12 (when passing through the dry gas of the 21st external qualified of valve F13, closes the 21st valve F13),
Dry gas blows cold junction beam.
1.2.5】Closed cycle is blown cold：
Since finished product gas cost is too high, therefore it is cold that whole dry gas should not be used to blow, and closed cycle is blown cold be greatly lowered and blown
Energy consumption during cold, process are：The 16th valve F8, the 14th valve F6 are closed, the 15th valve F7, the 18th valve are opened
Door F10, starting blower 13, provide power source by blower 13, by drying tower B and associated conduit (as filled circles are marked in Fig. 3
Pipeline) in gas carry out closed cycle blow it is cold, since blower 13 can generate the heat of compression during pressure-raising, therefore in blower 13
Outlet increases by the second surface air cooler 9, (drying of finished product gas after switching, pure since tower body temperature is lower using recirculated water or chilled water
It is better to change index, therefore preferably with chilled water), enter drying tower B through the 6th valve B2 of valve to after gas cooling, gas carries
The amount of residual heat of adsorbent enters the first surface air cooler 8 through the 7th valve B3, the 18th valve F10 in drying tower B, using recirculated water
Or chilled water (since chilled water is at high cost, fans entrance does not need too low temperature yet, therefore herein preferably with recirculated water) right
After gas cooling, gas enters blower 13, the second surface air cooler 9 and drying tower B again after cooling, is recycled with this and is carried out to drying tower B
Cooling, heat transfer to recirculated water and chilled water to take system out of.20th valve F12 is pressure reducing valve, is considered during blowing cold,
Due to the factor expanded with heat and contract with cold, the pressure in system can further decline, and be unfavorable for the operation of blower 13 and blow speed of cooling, estimate increasing
Add the 20th valve F12, after regenerative system pressure is down to the 20th valve F12 setting value, the 20th valve F12 is mended automatically
Gas.
1.3】Press
Blow it is cold after due to not with pressure in drying tower B, for avoid switching when impact, need to be before the handover to drying tower B
It is pressed, process is：The 6th valve B2, the 18th valve F10 are closed, the 20th valve F12 is opened, takes part dry gas by adding
Hot device 7, the 7th valve B3 enter drying tower B and carry out punching press to after drying tower A pressure balance to drying tower B, close the 20th
Valve F12, the 7th valve B3, stopping being pressed, and equipment enters standby phase, waits to be switched.
2】Working condition switching is carried out, drying tower B absorption, drying tower A regeneration after switching：
Working condition switching between drying tower A and drying tower B realizes that the adsorbent in drying tower A is carried out by valve
Adsorbent while regeneration in drying tower B is adsorbed, principle and step 1】It is identical.
Claims (11)
1. a kind of compressed air is dry, purifying process, which is characterized in that include the following steps：
1】It is regenerated using drying tower A adsorption and purification, drying tower B
1.1】Adsorption and purification
1.1.1】Solid particle contained in unstrpped gas, liquid water are separated, filtered；
1.1.2】Make through step 1.1.1】Gained gas flows through after processing is adsorbed in the drying tower A for be mounted with the first adsorbent
Dry and purifying, removes the moisture and carbon dioxide in gas；
1.1.3】It will be through step 1.1.2】Gained gas is filtered after processing, is removed the first adsorbent dust in gas, is obtained
To finished product gas；
1.1.4】It will be through step 1.1.3】Gained finished product gas a part introduces gas system of using after processing, and another part introduces subsequent ring
Section；
1.2】Regeneration
1.2.1】Release
If the pressure in current drying tower B is greater than normal pressure, entered step after the pressure in the drying tower B is unloaded to normal pressure
1.2.2】；
1.2.2】Dry gas heating
1.2.2.1】Dry gas to the qualified being introduced from outside into and/or through step 1.1.4】The finished product gas of introducing is added
Heat；
1.2.2.2】By step 1.2.2.1】Processing gained gas introduces the drying tower B and adds to the second adsorbent in tower
Thermal desorption makes residual moisture in the second adsorbent and carbon dioxide as hot gas is discharged from drying tower B；
1.2.3】Closed cycle is blown cold
1.2.3.1】The drying tower B is extracted using blower and the interior gas of threading a pipe that is connected with drying tower B；
1.2.3.2】Gas cooling to blower output；
1.2.3.3】By step 1.2.3.2】Gained gas introduces in the drying tower B, to the second adsorbent in drying tower B into
Row blows cold, and the amount of residual heat of the second adsorbent is discharged with hot gas from drying tower B；
1.2.3.4】To step 1.2.3.3】The hot gas of drying tower B discharge cools down；
1.2.3.5】By step 1.2.3.4】Gained gas introduces the blower；
1.2.3.6】Repeat step 1.2.3.2】-1.2.3.5】, circulation temperature lowering is carried out to the drying tower B；
1.3】Press
By step 1.4】Gained part finished product gas introduces the drying tower B, and pressure in drying tower B is made to rise to setting value；
2】Switching
It is switched over according to job requirement, after switching, the drying tower A is regenerated, and drying tower B carries out adsorption and purification, absorption
Purifying and regeneration principle and step 1】It is identical.
2. compressed air according to claim 1 is dry, purifying process, it is characterised in that：
In the step 1.2.2】Before dry gas heating, atmosphere heating is first carried out：
It is sent into the atmosphere after heating into the drying tower B for be mounted with the second adsorbent, heating parsing is carried out to the second adsorbent, is made
Moisture and carbon dioxide in second adsorbent are discharged with hot gas from drying tower B.
3. compressed air according to claim 2 is dry, purifying process, it is characterised in that：Atmosphere heating link is heated to
Reactivation outlet temperature is 80-160 degrees Celsius, the duration of heat at least 1 hour；Dry gas heating link is heated to reactivation outlet temperature
Degree is 120-180 degrees Celsius, the duration of heat at least 1 hour.
4. compressed air according to claim 3 is dry, purifying process, it is characterised in that：Atmosphere heating link is heated to
Reactivation outlet temperature is 80-120 degrees Celsius, and duration of heat 2-4 hour, dry gas heating link is heated to reactivation outlet temperature
It is 140-160 degrees Celsius, duration of heat 1-2 hour.
5. compressed air according to claim 4 is dry, purifying process, it is characterised in that：Step 1.2.3】Closed cycle
Blow be cooled to reactivation outlet temperature be 25-40 degrees Celsius.
6. -5 any compressed airs dryings, purifying process according to claim 1, it is characterised in that：In the step
1.2.2】Dry gas heating and step 1.2.3】Closed cycle is blown between cold, is increased dry gas and is blown cold link：
The dry gas that water and carbon dioxide indicator qualification are continuously introduced into the drying tower B blows cold setting time, in the process
The second adsorbent in drying tower B is parsed in cooling.
7. compressed air according to claim 6 is dry, purifying process, it is characterised in that：
The dry gas blows the cold duration at least 10 minutes, and dry gas flow is equal to raw gas flow/P, and P is unstripped gas work pressure
Power.
8. -5 any compressed airs dryings, purifying process according to claim 1, it is characterised in that：Step 3】Described in
Switching be to pass through valve transfer.
9. -5 any compressed airs dryings, purifying process according to claim 1, it is characterised in that：Step 1】Described in
The first adsorbent and the second adsorbent be activated alumina+molecular sieve.
10. a kind of compressed air is dry, purification devices, it is characterised in that：Including the drying being made of drying tower A and drying tower B
Device (10)；The adsorbent of water removal and carbon dioxide is respectively arranged in drying tower A and drying tower B；The upper and lower port of drier (10)
It is connected to respectively with upper piping (11) and lower piping (12), upper piping (11) is by the 4th valve (A4) in parallel, the 8th valve (B4)
With third valve (A3) in parallel, the 7th valve (B3) composition in parallel, lower piping (12) is by the first valve (A1) in parallel, the 5th
Valve (B1) and the second valve (A2) of parallel connection, the 6th valve (B2) composition in parallel；
It is provided with the 5th connecting tube (20) between first valve (A1), the 5th valve (B1), is successively set in the 5th connecting tube (20)
It is equipped with fore filter (3), gas-liquid separator (2) and preposition water cooler (1), the arrival end of preposition water cooler (1) is entire dress
The air inlet (14) set；
It is provided with the 7th connecting tube (22) between first valve (A1), the second valve (A2), is provided in the 7th connecting tube (22)
12nd valve (F4)；
It is provided with the 6th connecting tube (21) between second valve (A2), the 6th valve (B2), is equipped in the 6th connecting tube (21)
14th valve (F6)；
It is provided with the 8th connecting tube (23) between 6th valve (B2), the 5th valve (B1), is equipped in the 8th connecting tube (23)
13rd valve (F5)；
It is provided with the second connecting tube (17) between third valve (A3), the 7th valve (B3), the other end of the second connecting tube (17)
It is divided into two branches：Wherein it is disposed with the 18th valve (F10) and the first surface air cooler (8) in the first branch (171), second
Having heaters (7), the 17th valve (F9) and blower (13) are set gradually on branch (172)；The first branch (171) and second
The other end on road (172) converges at the 9th connecting tube (24)；The 16th valve (F8) is provided in 9th connecting tube (24)；
It is provided with third connecting tube (18) between heater (7) and the 17th valve (F9), third connecting tube (18) passes through second
Ten valves (F12) are connected to the first connecting tube (16)；The tenth connecting tube communicated therewith is additionally provided in third connecting tube (18)
(25), and the tenth connecting tube (25) is between the 20th valve (F12) and heater (7)；It is arranged in tenth connecting tube (25)
There is the 21st valve (F13)；The 4th connecting tube (19), the 4th connection are provided between 17th valve (F9) and blower (13)
The second surface air cooler (9) and the 15th valve (F7), the other end and the 6th of the 4th connecting tube (19) are disposed on pipe (19)
Connecting tube (21) is connected；
It is provided with the first connecting tube (16) between 4th valve (A4), the 8th valve (B4), the first connecting tube is successively set on (16)
The outlet end for being equipped with post-filter (6) is the gas outlet (15) of whole device；
First connecting tube (16) is also connected to by the 19th valve (F11) with the second connecting tube (17)；
The 9th valve (F1), the tenth valve are connected separately on gas-liquid separator (2), fore filter (3) and post-filter (6)
Door (F2) and the 22nd valve (F14).
11. compressed air according to claim 9 is dry, purification devices, it is characterised in that：It further include for removing liquid
The preposition accurate filter (4) and postposition accurate filter (5) of oil；Along airflow direction, preposition accurate filter (4) setting
In the rear end of the fore filter (3), postposition accurate filter (5) is arranged in the rear end of the post-filter (5)；It is described
The outlet end of postposition accurate filter (5) is the gas outlet (15) of whole device；Preposition accurate filter (4) and postposition precision mistake
The 11st valve (F3) and the 23rd valve (F15) are respectively arranged on filter (5).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110302630A (en) * | 2019-07-18 | 2019-10-08 | 大连中鼎化学有限公司 | A kind of purification devices and its technique for purified gases preparation hyperpure gas |
| CN110420539A (en) * | 2019-07-14 | 2019-11-08 | 杭州杭氧股份有限公司 | A kind of automatically-adaptive control method of space division purification system |
| CN111318136A (en) * | 2020-04-16 | 2020-06-23 | 西安联合超滤净化设备有限公司 | Multi-tower parallel type drying and purifying process and device |
| CN111346474A (en) * | 2020-03-12 | 2020-06-30 | 山东京博中聚新材料有限公司 | Cyclic regeneration method of alumina drying tower in butyl rubber device |
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| CN110420539A (en) * | 2019-07-14 | 2019-11-08 | 杭州杭氧股份有限公司 | A kind of automatically-adaptive control method of space division purification system |
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| CN111346474A (en) * | 2020-03-12 | 2020-06-30 | 山东京博中聚新材料有限公司 | Cyclic regeneration method of alumina drying tower in butyl rubber device |
| CN111318136A (en) * | 2020-04-16 | 2020-06-23 | 西安联合超滤净化设备有限公司 | Multi-tower parallel type drying and purifying process and device |
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