CN107213760A - A kind of energy-efficient drying device of absorption type and system - Google Patents
A kind of energy-efficient drying device of absorption type and system Download PDFInfo
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- CN107213760A CN107213760A CN201710576391.5A CN201710576391A CN107213760A CN 107213760 A CN107213760 A CN 107213760A CN 201710576391 A CN201710576391 A CN 201710576391A CN 107213760 A CN107213760 A CN 107213760A
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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
- B01D53/261—Drying gases or vapours by 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
- B01D53/266—Drying gases or vapours by filtration
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Abstract
The invention provides a kind of energy-efficient drying device of absorption type, including air inlet and gas outlet, the outlet of the air inlet and air compressor machine is connected；The energy-efficient drying device of absorption type also includes the first tub, the second tub and regeneration module；The entrance of first tub is connected by the first intake valve with air inlet pipeline, and the entrance of second tub is connected by the second intake valve with air inlet pipeline；The outlet of first tub is connected by the first air outlet valve with the gas outlet pipeline, and the outlet of second tub is connected by the second air outlet valve with the gas outlet pipeline.The drying device whole flow process not consumption of compressed air, compressed air quality is high, reduces power consumption, energy-saving effect is obvious.
Description
Technical field
The present invention relates to mechanical equipment technical field, more particularly to a kind of energy-efficient drying device of absorption type and it is
System.
Background technology
Absorption drier is divided into simple type absorption drier（Disposably）With regenerative absorption drier（Automatically follow
It is ring-like）.
Reproduction adsorption type drying machine is made up of two duplex machine barrels, and the drier of moisture can be absorbed by being loaded with machine barrel.Two
Individual machine barrel is switched on or off source of the gas in turn, alternately dries and regenerates operation, so that the dry drying of air-flow energy continuous contact
Agent come reach dehumidification dry purpose
Air rate is 15% ~ 20% in current every profession and trade conventional compression air drying equipment and system work process, and energy waste is more,
Carbon emission is more.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of energy-efficient drying device of absorption type, in the course of work
Compressed air zero is lost, dew point control, extends sorbent life, reduces power consumption, saves mass energy.
The invention provides a kind of energy-efficient drying device of absorption type, including air inlet and gas outlet, the air inlet
It is connected with the outlet of air compressor machine；
The energy-efficient drying device of absorption type also includes the first tub, the second tub and regeneration module；
The entrance of first tub is connected by the first intake valve with air inlet pipeline, and the entrance of second tub passes through
Two intake valves are connected with air inlet pipeline；The outlet of first tub is connected by the first air outlet valve and the gas outlet pipeline
Connect, the outlet of second tub is connected by the second air outlet valve with the gas outlet pipeline；
The regeneration module includes air intake, air outlet slit, heater, cooler and air blower, the air intake and three
The first end connection of way pipe fitting, the second end pipe road of the tee pipe fitting is sequentially connected the air blower, the first control valve, described
Heater, the second control valve and the cooler, the three-terminal link of the cooler and the tee pipe fitting；
The heating exit of the heater is connected by the 3rd control valve with the export pipeline of first tub, the heater
Heating exit be connected by the 4th control valve with the export pipeline of second tub；
The branch road of air outlet one of the air blower is connected with first control valve, and another branch road connects four by the 5th control valve
First mouth of pipe of way pipe fitting, second mouth of pipe of the four-way pipe fitting passes through the entrance pipe of the 6th control valve and first tub
Connection, the 3rd mouth of pipe of the four-way pipe fitting is connected by the 7th control valve with the entrance pipe of second tub, and described four
4th mouth of pipe of way pipe fitting is connected by the 8th control valve with the air outlet slit.
Optionally, first tub and the built-in filter for being equipped with splendid attire adsorbent of second tub, the filter will
The inside division of first tub and second tub is heart and outer shroud two parts, and the adsorbent includes the first particle diameter
Aluminum oxide and the second particle diameter aluminum oxide, first particle diameter are more than the second particle diameter, and the inner parts contain second particle diameter
Aluminum oxide, the outer ring portion contains the first particle diameter aluminum oxide.
Optionally, the adsorbent also includes molecular sieve, and the first particle diameter aluminum oxide and the second particle diameter aluminum oxide are contained
The bottom of the close entrance inside first tub and second tub；The molecular sieve is contained in described first
The top of the close outlet inside tub and second tub.
Optionally, air exhauster is set in the air outlet slit, the air outlet slit is connected with the air exhauster interface.
Optionally, the entrance of first tub and the entrance and exit of second tub are all connected with stainless steel air point
Device is flowed, the current divider is to be evenly distributed with multiple stomatas on toroidal, the annulus body.
Optionally, the entrance of first tub and the entrance and exit of second tub are all connected with stainless steel air point
Device is flowed, the current divider is to be evenly distributed with multiple stomatas on gondola water faucet shape, the gondola water faucet body.
Optionally, multiple stomatas are evenly distributed with the gondola water faucet body, each stomata is connected with time isocon, institute
The tube wall for stating time isocon is evenly equipped with multiple tap holes of different directions.
Inhaled present invention also offers a kind of energy-efficient drying system of absorption type, including as described in claim 1- 7 is any
The attached energy-efficient drying device of formula and three-stage filtration component, the outlet of the air compressor machine connect with the entrance of the three-stage filtration component
Connect, the outlet of the three-stage filtration component is connected with the air inlet.
Optionally, the three-stage filtration component includes moisture trap, accurate filter and the ultraprecise mistake being sequentially connected in series
Filter, the outlet of the air compressor machine is connected with the entrance of the moisture trap, the outlet of the ultraprecise filter with it is described
Air inlet is connected.
Optionally, in addition to rearmounted dust removal filter, the entrance of the rearmounted dust removal filter is connected with the gas outlet.
Relative to prior art, the energy-efficient drying device course of work of absorption type that the present invention is provided includes absorption, added
Hot recycling, circulating cooling, standby, absorption circulation technology, first barrel of tub and the second tub are alternately performed by adsorbing pipeline
Technique is adsorbed by drying, then by regeneration module, completes blast heating regeneration, the process of sealing and circulating cooling, and realizes first barrel
The recycling of groove and the second tub.Whole flow process not consumption of compressed air, compressed air quality is high, reduces power consumption, saves
Effect is obvious.
Further, designed by optimizing the decker of adsorbent, optimize flow direction and the speed of air-flow, enter one
Step improves the quality of compressed air.
Present invention also offers the energy-efficient drying system of absorption type, due to efficiently being saved system that employs above-mentioned absorption type
Energy drying device, therefore with identical beneficial effect.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.
The schematic diagram for the energy-efficient drying device of absorption type that Fig. 1 provides for the present invention；
The schematic diagram for the energy-efficient drying system of absorption type that Fig. 2 provides for the present invention.
Wherein, the corresponding relation between the reference and component names in Fig. 1 and Fig. 2 is as follows：
1 air compressor machine,
The energy-efficient drying device of 2 absorption types,
21 air inlets,
22 gas outlets,
23 first tubs,
24 second tubs,
25 regeneration modules,
31 first intake valves,
32 second intake valves,
33 first air outlet valves,
34 second air outlet valves,
251 air intakes,
252 air outlet slits,
253 heaters,
254 coolers,
255 air blowers,
41 first control valves,
42 second control valves,
43 the 3rd control valves,
44 the 4th control valves,
45 the 5th control valves,
46 the 6th control valves,
47 the 7th control valves,
48 the 8th control valves,
5 three-stage filtration components,
51 moisture traps,
52 accurate filters,
53 ultraprecise filters,
6 rearmounted dust removal filters.
Embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description to this
Invention is described in further detail.
It refer to Fig. 1 and Fig. 2, the schematic diagram for the energy-efficient drying device of absorption type that Fig. 1 provides for the present invention；Fig. 2 is this hair
The schematic diagram of the energy-efficient drying system of absorption type of bright offer.
In a kind of specific embodiment, the energy-efficient drying device of a kind of absorption type that the present invention is provided, including air inlet
21 and gas outlet 22, air inlet 21 is connected with the outlet of air compressor machine 1；
The energy-efficient drying device of absorption type also includes the first tub 23, the second tub 24 and regeneration module 25；
The entrance of first tub 23 is connected by the first intake valve 31 with the pipeline of air inlet 21, and the entrance of the second tub 24 passes through
Two intake valves 32 are connected with the pipeline of air inlet 21；The outlet of first tub 23 is connected by the first air outlet valve 33 and the pipeline of gas outlet 22
Connect, the outlet of the second tub 24 is connected by the second air outlet valve 34 with the pipeline of gas outlet 22；
Regeneration module 25 includes air intake 251, air outlet slit 252, heater 253, cooler 254 and air blower 255, air
Entrance 251 is connected with the first end of tee pipe fitting, and the second end pipe road of tee pipe fitting is sequentially connected the control of air blower 255, first
Valve 41, heater 253, the second control valve 42 and cooler 254, the three-terminal link of cooler 254 and tee pipe fitting；
The heating exit of heater 253 is connected by the 3rd control valve 43 with the export pipeline of the first tub 23, heater 253
Heating exit is connected by the 4th control valve 44 with the export pipeline of the second tub 24；
The branch road of air outlet one of air blower 255 is connected with the first control valve 41, and another branch road connects four by the 5th control valve 45
First mouth of pipe of way pipe fitting, second mouth of pipe of four-way pipe fitting is connected by the entrance pipe of the 6th control valve 46 and the first tub 23
Connect, the 3rd mouth of pipe of four-way pipe fitting is connected by the 7th control valve 47 with the entrance pipe of the second tub 24, the of four-way pipe fitting
Four mouths of pipe are connected by the 8th control valve 48 with air outlet slit 252.
Relative to prior art, the energy-efficient drying device course of work of absorption type that the present invention is provided includes absorption, added
Hot recycling, circulating cooling, standby, absorption circulation technology, first barrel of tub and the second tub 24 are alternately held by adsorbing pipeline
Row is adsorbed by drying technique, then by regeneration module 25, completes blast heating regeneration, the process of sealing and circulating cooling, and realizes the
The recycling of one tub 23 and the second tub 24.Whole flow process not consumption of compressed air, compressed air quality is high, reduces electricity
Consumption, energy-saving effect is obvious.
The operation principle of the absorption drier of continuous firing is Dynamic Adsorption principle.This refers to needing dry compression
Air enters desiccant layer, and then the moisture in air is absorbed.Because the drying capacity of drier is limited, full reaching
Before, it will change.With the transformation of drier tub operation principle, point of use can endlessly obtain dry
Compressed air.
The course of work of the energy-efficient drying device of absorption type includes：
Stroke is adsorbed, absorption stroke is run by tub bottom up.
Specifically, the contracting air of vapour pressure containing saturation of the discharge of air compressor machine 1 is via being installed on the first of the bottom of the first tub 23
Intake valve 31, into the first tub 23, saturation aqueous vapor is may insure using various stainless steel air diverter in the first tub 23
Compressed air can flow through sorbing material in all tubs, while its carry Water Molecular Adsorption in drier.And reach institute's palpus
The drying compressed air of dew point is then by the top of the first tub 23, via the import system of the first air outlet valve 33.
Stroke is regenerated, it is to use to be flowed to by tub top down to transport to flow to reverse thermal regeneration stroke with absorption stroke
OK.
Specifically, while compressed air is dried through the first tub 23, moisture reaches that the second tub 24 of saturation starts
Carry out regenerative process.Before reproducer starts, the pressure in the second tub 24 will slowly decline, until atmospheric pressure.This
Drying device in invention carries out regeneration treatment using atmospheric air.Air is sent to heater below by regenerative blower 255
In 253, air is heated to required regeneration temperature, the power of the rising of the air themperature of blower fan blowout to heater 253
Demand has active influence.
The air of air blower 255 enters the second tub 24 by the first control valve 41 and the 6th control valve 46 to be carried out at regeneration
Reason.The moisture adsorbed will be evaporated then as air-flow from the 4th control valve 44 and the 8th control valve 48 are discharged into air.
The regenerative process is carried out by back draught, in this way, and moisture is with prestissimo slave unit air inlet.
Under the evaporation of moisture, the air being heated will be cooled down when flowing through the second tub 24, Suo Youzai
It is so high that temperature during raw air discharge is far from evaporating temperature（About 40-60 °C）.As regenerative process is carried out, moisture
The reduction of content, the temperature of regeneration air will rise.Once reaching after required temperature, regenerative process will stop.
Stroke is cooled down, cooling stroke airflow direction is identical with absorption stroke directions, from the operation of tub bottom up, cooling row
Journey is closed loop.
To avoid temperature and dew point after changing from reaching the heat stored in highest, drier（After regeneration）Will be cooled
Air draught is taken away.The direction of cooling air-flow is as adsorption process, from top to bottom.It can prevent from doing by using this method
Drying prescription overloads, and improves dry mass.The air that the air blower 255 of the drying device 2 of the present invention is sucked flows in closed-loop path,
It can ensure that cooling procedure with environmental condition without any association.
Cooling stroke starts, the inverted running of air blower 255.Cooling system of the air that now air blower 255 is blown into closure
System flows in loop, and the cooling water of the cooled device 254 of heat is taken away.
After the completion of cooling program, the second tub 24 will be slowly pressurized.Once pressure is consistent with system pressure, it will enter
Alternate program.
Two tub alternating sorbents, regeneration, the circulation of cooling more than, realize that endlessly product is supplied.
It is preferred that, the first tub 23 and the second tub 24 is built-in is equipped with the filter for containing adsorbent, filter is by the first tub
23 and second tub 24 inside division be heart and outer shroud two parts, adsorbent include the first particle diameter aluminum oxide and the second particle diameter
Aluminum oxide, the first particle diameter is more than the second particle diameter, and inner parts contain the second particle diameter aluminum oxide, and outer ring portion contains the first particle diameter oxygen
Change aluminium.
Designed by the decker for optimizing adsorbent, the adsorbent of small particle is contained in inner parts, makes script flow velocity
Faster central part flow slowing down absorption, outer ring portion contains the adsorbent of greater particle size, the slower outer shroud air-flow of script flow velocity
Accelerate absorption, this layout optimises the flow direction of air-flow and speed, further increase the quality of compressed air.
In addition, adsorbent also includes molecular sieve, the first particle diameter aluminum oxide and the second particle diameter aluminum oxide are contained in the first tub
23 and the bottom of the second close entrance inside tub 24；Molecular sieve is contained in leaning on inside the first tub 23 and the second tub 24
The top closely exported.Adsorption process is further optimized, to realize that first oxidized aluminium adsorbent is adsorbed, and inhales by molecular sieve depth
Attached flow, further increases product quality.
In order to further optimize the flow of adsorbent reactivation, air outlet slit 252 set air exhauster, air outlet slit 252 with
Air exhauster interface is connected.The setting of air exhauster can accelerate regeneration gas air flow, shorten air and flowed in the pipeline of same length
The dynamic time, energy dissipation is reduced, improve regeneration efficiency.
Current dryer is due to the design problem generally existing channeling of tub, i.e. in system, because gas is uneven
Even flowing, fluid opens the passage of a resistance very little, forms ditch, and gas passes through bed, shadow with the extremely short residence time
Ring adsorption effect.In another specific embodiment, the entrance and exit of the entrance of the first tub 23 and the second tub 24 is equal
Stainless steel air diverter is connected, current divider is to be evenly distributed with multiple stomatas on toroidal, annulus body.Toroidal can
The inlet gas uniform divided flows of tub will be entered, be that air-flow can be even by the adsorbent in tub, improve product quality.
Current divider can also be to be evenly distributed with multiple stomatas on gondola water faucet shape, gondola water faucet body.It is preferred that, on gondola water faucet body
Multiple stomatas are evenly distributed with, each stomata is connected with time isocon, and the tube wall of secondary isocon is evenly equipped with the multiple of different directions
Tap hole.The shunting flow direction of gas is further optimized, so that gas more uniformly sufficiently flows through adsorbent, is further carried
High adsorption efficiency, improves product quality.
It should be noted that all valves in the present invention can be using globe valve, magnetic valve, pneumatic operated valve etc., with realization pair
For the purpose of the folding of pipeline.
Cooler 254 in the present invention can use circulating water mode.Closed cooling will not introduce impurity, cooling effect
It is good.
Heater 253 in the present invention can use the mode such as electrical heating or steam heating realize, especially, above-mentioned heater
253 heat exchanger plates use graphene board or graphene clad plate, can effectively increase heat exchange efficiency, and then improve regeneration efficiency.
In addition, present invention also offers a kind of energy-efficient drying system of absorption type, including above-mentioned absorption type are energy-efficient
Drying device and three-stage filtration component 5, the outlet of air compressor machine 1 are connected with the entrance of three-stage filtration component 5, three-stage filtration component 5
Outlet be connected with air inlet 21.Due to system that employs the energy-efficient drying device of above-mentioned absorption type, therefore with identical
Beneficial effect, in addition, being arranged on before drying device for three-stage filtration component 5 makes compressed air first pass through filtering, filtering
Fall a large amount of steam therein and impurity, reduce the adsorption strength of follow-up drying device, add the service life of drying device, drop
Low operating cost, improves the operating efficiency of system.
It is preferred that, three-stage filtration component 5 includes moisture trap 51, accurate filter 52 and the ultraprecise mistake being sequentially connected in series
Filter 53, the outlet of air compressor machine 1 is connected with the entrance of moisture trap 51, and outlet and the air inlet 21 of ultraprecise filter 53 connect
Connect.Minute impurities and suspended particulates that ultraclean filters can be filtered out further, further reduce the absorption of follow-up drying device
Intensity, adds the service life of drying device, improves the operating efficiency of system, improves product quality.
Preferably, drying system also includes rearmounted dust removal filter 6, the entrance of rearmounted dust removal filter 6 and gas outlet
22 connections, the rearmounted dust removal filter 6 can filter the impurity such as powder for carrying in the gas after adsorbing, raising product degree of purity.
A kind of energy-efficient drying device of absorption type provided by the present invention and system are described in detail above.This
Apply specific case in text to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to
Help to understand method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls
Enter in the protection domain of the claims in the present invention.
Claims (10)
1. a kind of energy-efficient drying device of absorption type, it is characterised in that including air inlet（21）And gas outlet（22）, it is described enter
Gas port（21）With air compressor machine（1）Outlet connection；
The energy-efficient drying device of absorption type also includes the first tub（23）, the second tub（24）And regeneration module（25）；
First tub（23）Entrance pass through the first intake valve（31）With the air inlet（21）Pipeline is connected, and described second
Tub（24）Entrance pass through the second intake valve（32）With the air inlet（21）Pipeline is connected；First tub（23）Go out
Mouth passes through the first air outlet valve（33）With the gas outlet（22）Pipeline is connected, second tub（24）Outlet go out by second
Air valve（34）With the gas outlet（22）Pipeline is connected；
The regeneration module（25）Including air intake（251）, air outlet slit（252）, heater（253）, cooler（254）With
Air blower（255）, the air intake（251）It is connected with the first end of tee pipe fitting, the second end pipe road of the tee pipe fitting
It is sequentially connected the air blower（255）, the first control valve（41）, the heater（253）, the second control valve（42）And it is described
Cooler（254）, the cooler（254）With the three-terminal link of the tee pipe fitting；
The heater（253）Heating exit pass through the 3rd control valve（43）With first tub（23）Export pipeline connect
Connect, the heater（253）Heating exit pass through the 4th control valve（44）With second tub（24）Export pipeline connect
Connect；
The air blower（255）The branch road of air outlet one and first control valve（41）Connection, another branch road passes through the 5th control
Valve processed（45）First mouth of pipe of four-way pipe fitting is connected, second mouth of pipe of the four-way pipe fitting passes through the 6th control valve（46）With it is described
First tub（23）Entrance pipe connection, the 3rd mouth of pipe of the four-way pipe fitting passes through the 7th control valve（47）With described second
Tub（24）Entrance pipe connection, the 4th mouth of pipe of the four-way pipe fitting passes through the 8th control valve（48）With the air outlet slit
（252）Connection.
2. the energy-efficient drying device of absorption type as claimed in claim 1, it is characterised in that first tub（23）And institute
State the second tub（24）Built-in to be equipped with the filter for containing adsorbent, the filter is by first tub（23）With described second barrel
Groove（24）Inside division be heart and outer shroud two parts, the adsorbent includes the first particle diameter aluminum oxide and the second particle diameter and aoxidized
Aluminium, first particle diameter is more than the second particle diameter, and the inner parts contain the second particle diameter aluminum oxide, and the outer ring portion is contained
Fill the first particle diameter aluminum oxide.
3. the energy-efficient drying device of absorption type as claimed in claim 2, it is characterised in that the adsorbent also includes molecule
Sieve, the first particle diameter aluminum oxide and the second particle diameter aluminum oxide are contained in first tub（23）With second tub（24）
The bottom of the internal close entrance；The molecular sieve is contained in first tub（23）With second tub（24）It is interior
The top of the close outlet in portion.
4. the energy-efficient drying device of absorption type as claimed in claim 3, it is characterised in that in the air outlet slit（252）
Air exhauster, the air outlet slit are set（252）It is connected with the air exhauster interface.
5. the energy-efficient drying device of absorption type as described in claim 1-4 is any, it is characterised in that first tub
（23）Entrance and second tub（24）Entrance and exit be all connected with stainless steel air diverter, the current divider is circle
Multiple stomatas are evenly distributed with ring-shaped, the annulus body.
6. the energy-efficient drying device of absorption type as described in claim 1-4 is any, it is characterised in that first tub
（23）Entrance and second tub（24）Entrance and exit be all connected with stainless steel air diverter, the current divider is flower
Spill and be evenly distributed with multiple stomatas on shape, the gondola water faucet body.
7. the energy-efficient drying device of absorption type as claimed in claim 6, it is characterised in that uniformly divide on the gondola water faucet body
Multiple stomatas are furnished with, each stomata is connected with time isocon, and the tube wall of described isocon is evenly equipped with many of different directions
Individual tap hole.
8. a kind of energy-efficient drying system of absorption type, it is characterised in that including the absorption type as described in claim 1- 7 is any
Energy-efficient drying device and three-stage filtration component（5）, the air compressor machine（1）Outlet and the three-stage filtration component（5）'s
Entrance is connected, the three-stage filtration component（5）Outlet and the air inlet（21）Connection.
9. the energy-efficient drying system of absorption type as claimed in claim 8, it is characterised in that the three-stage filtration component（5）
Including the moisture trap being sequentially connected in series（51）, accurate filter（52）With ultraprecise filter（53）, the air compressor machine（1）'s
Outlet and the moisture trap（51）Entrance connection, the ultraprecise filter（53）Outlet and the air inlet（21）
Connection.
10. the energy-efficient drying system of absorption type as claimed in claim 9, it is characterised in that also including rearmounted dust removal and filtration
Device（6）, the rearmounted dust removal filter（6）Entrance and the gas outlet（22）Connection.
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Cited By (1)
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| CN108126481A (en) * | 2017-11-09 | 2018-06-08 | 无锡联合超滤净化设备科技有限公司 | The method of work of external heat surface cooler drying device |
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| CN105347316A (en) * | 2015-11-30 | 2016-02-24 | 天津森罗科技股份有限公司 | Preparing system and method for clean nitrogen for protecting precious articles |
| CN105879595A (en) * | 2016-06-24 | 2016-08-24 | 合肥欧克斯新型建材有限公司 | Air saving device of air compressor |
| CN207012777U (en) * | 2017-07-14 | 2018-02-16 | 湖南和鑫新能源技术有限公司 | A kind of energy-efficient drying device of absorption type and system |
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| CN108126481A (en) * | 2017-11-09 | 2018-06-08 | 无锡联合超滤净化设备科技有限公司 | The method of work of external heat surface cooler drying device |
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