A kind of zero gas consumption compressed air drier by afterheat regeneration
Technical field
The present invention relates to a kind of zero gas consumption compressed air drier by afterheat regeneration.
Background technology
Compressed air because having the characteristics that easily to store, easy to control, good fluidity and safe and environment-friendly, be only second to electric power
Second power source is widely used in many fields such as food, electric power, chemical industry, pharmacy, mining and machine-building.Application
Field is different, also different to the quality requirement of compressed air, but be unable to do without efficient, energy-saving and environmental protection themes always.
Air is after compressor compresses, so that it may obtain the compressed air with elevated pressures.But due to air compressor
Itself contains lubricating oil, when carrying out compression work, necessarily has parts of lubricating oil to be mixed into compressed air, in addition, natural
The air on boundary itself also contains some solid particles and moisture etc., and therefore, the compressed air generated by compressor is not pure
's.This air without purified treatment is directly used in pneumatic circuit, pneumatic circuit can be made to break down, be damaged pneumatic group
Part reduces component service life, and production efficiency declines, or even causes the accident.According to statistics, the disorderly closedown of pneumatic system has 85%
It is due to the use of caused by compressed air that is unholiness, not drying above.To find out its cause, the moisture in compressed air can cause portion
Part corrosion, winter can condense icing, result in blockage;Oil gas condensation precipitate to be formed greasy dirt often result in sealing element aging, failure;Powder
Dirt then accelerates the abrasion of moving parts, and deposition results in blockage, and causes the meaningless pressure loss etc..Therefore, these compressions are purified
Air is an essential important link in baric systerm to obtain pure compressed air.
Wherein, it is exactly moisture contained in compressed air to influence maximum factor to pneumatic system.Moisture is in surrounding air
In be widely present, can not completely remove, after this part water enters compressor compresses, due to the variation of temperature, pressure, will have cold
Condensate is precipitated, and seriously affects operation and the function life-span of other gas equipments of Compressor Group, therefore removes the water in air
It is very necessary to divide.
Drying is opposite, that is, is considered as dry air in certain demand, is regarded as not in other purposes
Enough dryings.Therefore, compressed air needs the drying of which kind of degree, first when being design or selection drying machine which kind of demand met
The factor to be considered.Because selection need not too low dew point drying machine, will increase buying and operating cost.According to above several
Different theoretical methods, the compressed air drying method developed and used at present include mainly following several:
(1)It is adsorbed by drying method:
Method is adsorbed by drying using adsorbent to the absorption property of moisture, such as silica gel, activated alumina and molecular sieve etc., they are to water
Dividing all has very strong adsorption capacity.The moisture absorption process of adsorbent is physical change, is reproducible, adsorbs under high pressure, low
Pressure desorption, i.e. pressure-variable adsorption(PSA);Also it can be adsorbed in normal pressure, when heating regenerates, i.e. temp.-changing adsorption(TSA);Or high pressure is normal
Temperature absorption, constant-pressure and high-temperature desorption(PTC).This kind of aridity being adsorbed by drying can reach -70 DEG C of dew points at normal pressure.
(2)Deliquesce seasoning:
Deliquescence formula drier, to the characterization of adsorption of moisture, only deliquesces the adsorbent of formula in adsorption moisture also with adsorbent
Afterwards, become liquid discharge, the adsorbent after deliquescence cannot regenerate, and can cause environmental pollution.This method is also known as chemistry
Method.This kind of drier can reach -38 DEG C or so of dew point.
(3)Freeze-drying:
Freeze-drying is that the cold generated using refrigeration compressor cools down compressed air, and compressed air is made to reach its pressure
Dew-point temperature corresponding to power reaches drying purpose to make the moisture in compressed air be precipitated.The aridity of this kind of seasoning
- 23 DEG C of dew points at normal pressure can be reached.
(4)UF membrane seasoning:
It is a kind of extremely promising drying mode that compressed air, which is dried, using membrane separation technique.Compressed air is by hollow
When fiber membrane, the osmotic pressure of each substance is different, so that water is separated from compressed air, to reach drying effect.
Existing compressed air drying method generally existing operating cost is high, absorption material expends big, service life of equipment
The shortcomings of short, and its drying effect is also difficult to meet the higher and higher use gas requirement of equipment.For this reason, it may be necessary to find new method
This problem is solved with approach.
Invention content
In order to solve many deficiencies in the prior art, the present invention provides a kind of zero gas consumption residual heat regenerating compressed air is dry
Dry device, the system include compressed air inlet, ultraviolet catalyzed oil expeller, adsorption tower, thermoelectric converter, accumulator, heating
Controller, electric heater, external power supply, cooler A, gas-liquid separator A, cooler B, gas-liquid separator B, bag filter,
Drying compressed air exports and 5 sets of shut-off valves.Wherein, it after air enters this system by compressed air inlet, initially enters
Ultraviolet catalyzed oil expeller, the air path after its deoiling treatment are divided into A, B two-way, and the connection type on the roads A is:Air according to
It is secondary by shut-off valve A, thermoelectric converter, shutoff valve C, eventually enter into adsorption tower;The connection type on the roads B is:Air passes sequentially through
Shut-off valve B, cooler B, gas-liquid separator B, shut-off valve D, eventually enter into adsorption tower.Wherein, compressed air outlet gas flow path is one
Road, air pass sequentially through cooler A, gas-liquid separator A, bag filter, are finally exported and are sent out by drying compressed air, conveying
To gas equipment.Wherein, gas-liquid separator A and gas-liquid separator B are respectively equipped with automatic drain valve and Manual draining valve.Its
In, the transport path of electric energy is:The electric energy that electric energy caused by thermoelectric converter and external power supply provide, is deposited into accumulator
Storage, and the electric heater inside adsorption tower is conveyed to after the regulation and control of heated controller.Wherein, outside ultraviolet catalyzed oil expeller
Cover is stainless steel, and bottom and top are respectively equipped with air intake valve and drain tap, is internally provided with 1 ultraviolet light and occurs
Device, and it is individually fixed in equipment quadrangle by 4 fixing brackets, ultraviolet light generator passes through two sections of connecting wires and device external
Electric control gear be connected, be enclosed with tungstic acid catalysis net on the outside of ultraviolet light generator.Compressed air containing mineral oil passes through
Air intake valve positioned at ultraviolet catalyzed oil expeller bottom enters inside equipment, air and three oxygen being fixed on inside reaction unit
Change tungsten catalysis net to be in contact, at this point, regulation and control of the ultraviolet light generator among tungstic acid catalysis net in electric control gear
Lower start-up operation, ultraviolet light is emitted into whole equipment, under ultraviolet wavelength irradiation condition, the tungsten atom in tungstic acid
Meeting Ultraviolet radiation absorbing, low-lying level electrons are optically excited, and energy level transition occurs, while being generated accordingly on original cost band
Hole to generate a large amount of free radicals, and the mineral oil component exhaustive oxidation in air is cracked, and primary product is water vapour
And carbon dioxide, the compressed air after deoiling treatment is discharged through the drain tap at the top of equipment, into next treatment process.
The complete working period of this system is divided into following two stages:
(1)Adsorbent absorbs water the stage:In this stage, shut-off valve A and shutoff valve C are open state, and shut-off valve B and shut-off valve
D is in off state.This system is entered by compressed air inlet by air compressor compressed air, by ultraviolet catalyzed
After the deoiling treatment of oil expeller, thermoelectric converter is entered by the shut-off valve A of unlatching, air is herein converted to a part of heat
Electric energy, and be stored in accumulator.Air significant hypothermal after heat to electricity conversion enters absorption by the shutoff valve C of unlatching
Tower, at this time the electric heater in adsorption tower be in off state, dehydration of the air by the activated alumina adsorbents in adsorption tower
After effect, temperature and moisture are substantially reduced.Air after adsorption treatment escapes and enter cooler from adsorption tower
A is further cooled herein, then enters gas-liquid separator A, and air is completed the separation of moisture, isolated herein
Waste liquid through automatic drain valve A drainage gas-liquid separators, be also manually operable Manual draining valve A when automatic drain valve A failures
Promptly drained.By gas-liquid separation, treated that dry air enters bag filter, further removes various grain sizes
After dust impurities, discharge this system is exported by drying compressed air, being delivered to gas equipment supply by air pipe line uses.
When adsorbent absorbs water close to saturation, system is automatically into second stage, i.e. adsorbent dehydration regeneration stage.
(2)The adsorbent dehydration regeneration stage:In this stage, shut-off valve B and shut-off valve D are open state, and shut-off valve A
It is in off state with shutoff valve C.This system is entered by compressed air inlet by air compressor compressed air, by purple
After outside line is catalyzed the deoiling treatment of oil expeller, cooler B is entered by the shut-off valve B of unlatching, is tentatively cooled herein,
Then enter gas-liquid separator B, air completes the separation of partial moisture herein, and the waste liquid isolated is discharged through automatic drain valve B
Gas-liquid separator, when automatic drain valve B failures being also manually operable Manual draining valve B is promptly drained.By gas-liquid point
From treated, partial desiccation air enters adsorption tower by the shut-off valve D of unlatching, and the electric heater in adsorption tower is to open at this time
State, accumulator were delivered to electric heater, to adsorption tower after the heated controller regulation and control of electric energy that a upper stage is stored
Interior adsorbent is heated, and is being heated under the double action of air purging, adsorbent dehydrates, the moisture of abjection
Adsorption tower is taken out of by air and enters cooler A, is further cooled herein, gas-liquid separator A is then entered, it is empty
Gas completes the separation of moisture herein, and the waste liquid isolated is through automatic drain valve A drainage gas-liquid separators, when automatic drain valve A events
Also Manual draining valve A is manually operable when barrier promptly to be drained.By gas-liquid separation, treated that dry air enters cloth bag
Deduster after the dust impurities for further removing various grain sizes, exports discharge this system, by air hose by drying compressed air
Road is delivered to supply at gas equipment and use.
After adsorbent dehydrates, system absorbs water the stage automatically into first stage, i.e. adsorbent.
Wherein, the dischargeable capacity of adsorption tower is 230m3, the internal adsorbent filled is spherical activated alumina
(Al2O3), a diameter of 4 ~ 6mm, heap density is 0.80g/m3, specific surface area 340m2/ g, intensity are more than 130N/.
Wherein, thermoelectric converter is alkali metal thermo-electric conversion regime, ranging from 105 ~ 900 DEG C of Acclimation temperature, conversion effect
Rate can reach 40% or so, and continuous generating dutation can reach 14000 hours.
Wherein, the working pressure range of ultraviolet catalyzed oil expeller is 0.06 ~ 0.95MPa, dischargeable capacity 15m3, purple
The operating voltage of outer optical generator is 35V, and power 100W, luminescent spectrum energy focuses primarily upon at 320nm wavelength, average
Service life was up to 8000 hours.
By this system treated compressed air, moisture removal efficiency is up to 99.4%.
The advantage of the invention is that:
(1)Existing compression heat regeneration absorption drier needs at least two adsorption tower and Two-way Cycle gas circuit that could complete entirely
Dehydration and drying and adsorbent reactivation process, and the Creative Design of this system makes it only and 1 adsorption tower is needed just to complete compression sky
The dehydration and drying of gas and the regeneration overall process of adsorbent have good drying process effect, and have been reduced significantly equipment
Volume and weight.
(2)This system uses advanced thermoelectric generation technology, and extra heat is converted to electric energy, greatly reduces and is
System energy consumption.
(3)This system creativeness uses ultraviolet catalytic decomposition technique, can be thorough by mineral oil contained in air
Removal is decomposed, rear end equipment is effectively protected.
(4)This system uses double gas circuit periodic transformation formula plenum systems, and cooperation electrical heating method carries out again adsorbent
Raw processing can realize no air loss, effectively save production cost, and can be provided for rear end gas equipment lasting, high-quality
Air supply.
Description of the drawings
Fig. 1 is the system structure diagram of the present invention.
In figure:The compressed air inlets 1-, 2- ultraviolet catalyzeds oil expeller, 3- adsorption towers, 4- thermoelectric converters, 5- electric power storages
Pond, 6- heating controllers, 7- electric heaters, 8- external power supplys, 9- cooler A, 10- gas-liquid separator A, 11- coolers B, 12-
Gas-liquid separator B, 13- bag filter, the outlet of 14- drying compressed airs, 15- shut-off valve A, 16- shut-off valve B, 17- shut-off valves
C, 18- shut-off valves D, 19- automatic drain valves A, 20- Manual draining valves A, 21- automatic drain valve B, 22- Manual draining valves B
Fig. 2 is the schematic diagram of ultraviolet catalyzed oil expeller.
In figure:21- air intake valves, 22- stainless steels outer cover, 23- ultraviolet light generators, 24- tungstic acids catalysis net, 25-
Fixing bracket, 26- electric control gears, 27- connecting wires, 28- drain taps.
Specific implementation mode
As shown in Figure 1, zero gas consumption compressed air drier by afterheat regeneration, which includes compressed air inlet 1, ultraviolet
Line is catalyzed oil expeller 2, adsorption tower 3, thermoelectric converter 4, accumulator 5, heating controller 6, electric heater 7, external power supply 8, cold
But device A9, gas-liquid separator A10, cooler B11, gas-liquid separator B12, bag filter 13, drying compressed air outlet 14,
Shut-off valve A15, shut-off valve B16, shutoff valve C 17, shut-off valve D18, automatic drain valve A19, Manual draining valve A20, Auto-drainage
Valve B21, Manual draining valve B22.Wherein, after air enters this system by compressed air inlet 1, ultraviolet catalyzed is initially entered
Oil expeller 2, the air path after its deoiling treatment are divided into A, B two-way, and the connection type on the roads A is:Air, which passes sequentially through, to be cut
Only valve A15, thermoelectric converter 4, shutoff valve C 17, eventually enter into adsorption tower 3;The connection type on the roads B is:Air, which passes sequentially through, to be cut
Only valve B16, cooler B11, gas-liquid separator B12, shut-off valve D18, eventually enter into adsorption tower 3.Wherein, compressed air goes out gas circuit
Diameter is all the way that air passes sequentially through cooler A9, gas-liquid separator A10, bag filter 13, is finally gone out by drying compressed air
Mouth 14 is sent out, and is delivered at gas equipment.Wherein, gas-liquid separator A10 and gas-liquid separator B12 are respectively equipped with automatic drain valve
A19, automatic drain valve B21 and Manual draining valve A20, Manual draining valve B22.Wherein, the transport path of electric energy is:Heat to electricity conversion
After the electric energy that electric energy caused by device 4 and external power supply 8 provide enters accumulator 5 and stores, and heated controller 6 regulates and controls
The electric heater 7 being conveyed to inside adsorption tower 3.Wherein, 2 outer cover of ultraviolet catalyzed oil expeller is stainless steel, bottom
Portion and top are respectively equipped with air intake valve 21 and drain tap 28, are internally provided with 1 ultraviolet light generator 23, and pass through 4
Fixing bracket 25 is individually fixed in equipment quadrangle, and ultraviolet light generator 23 is automatically controlled by two sections of connecting wires 27 and device external
Device 26 is connected, and 23 outside of ultraviolet light generator is enclosed with tungstic acid catalysis net 24.Compressed air containing mineral oil passes through
Air intake valve 21 positioned at 2 bottom of ultraviolet catalyzed oil expeller enters inside equipment, air and is fixed on inside reaction unit
Tungstic acid catalysis net 24 is in contact, at this point, the ultraviolet light generator 23 among tungstic acid catalysis net 24 is automatically controlled
It starts to work under the regulation and control of device 26, ultraviolet light is emitted into whole equipment, under ultraviolet wavelength irradiation condition, three oxidations
Tungsten atom meeting Ultraviolet radiation absorbing in tungsten, low-lying level electrons are optically excited, and energy level transition occurs, while in original cost band
It is upper to generate corresponding hole, to generate a large amount of free radicals, and the mineral oil component exhaustive oxidation in air is cracked, it is main
Product is water vapour and carbon dioxide, and the compressed air after deoiling treatment is discharged through the drain tap 28 at the top of equipment, into
Enter next treatment process.
The complete working period of this system is divided into following two stages:
(1)Adsorbent absorbs water the stage:In this stage, shut-off valve A15 and shutoff valve C 17 are open state, and shut-off valve B16 and
Shut-off valve D18 is in off state.This system is entered by compressed air inlet 1 by air compressor compressed air, is passed through
After the deoiling treatment of ultraviolet catalyzed oil expeller 2, thermoelectric converter 4 is entered by the shut-off valve A15 of unlatching, air is herein by one
Partial heat is converted to electric energy, and is stored in accumulator 5.Air significant hypothermal after heat to electricity conversion, passes through unlatching
Shutoff valve C 17 enters adsorption tower 3, and the electric heater 7 in adsorption tower 3 is in off state at this time, and air is by the work in adsorption tower 3
After the dehydration of property alumina adsorbant, temperature and moisture are substantially reduced.Air after adsorption treatment, from suction
Attached tower 3 escapes and enter cooler A9, is further cooled herein, and gas-liquid separator A10 is then entered, and air exists
This completes the separation of moisture, and the waste liquid isolated is through automatic drain valve A19 drainage gas-liquid separators, when automatic drain valve A19 events
Also Manual draining valve A20 is manually operable when barrier promptly to be drained.By gas-liquid separation, treated that dry air enters cloth
Bag dust collector 13, after the dust impurities for further removing various grain sizes, by 14 discharge this system of drying compressed air outlet, by
Air pipe line is delivered to supply at gas equipment and use.
When adsorbent absorbs water close to saturation, system is automatically into second stage, i.e. adsorbent dehydration regeneration stage.
(2)The adsorbent dehydration regeneration stage:In this stage, shut-off valve B16 and shut-off valve D18 are open state, and are cut
Only valve A15 and shutoff valve C 17 are in off state.This is entered by compressed air inlet 1 by the compressed air of air compressor
System enters cooler B11, herein after the deoiling treatment of ultraviolet catalyzed oil expeller 2 by the shut-off valve B16 of unlatching
It is tentatively cooled, then enters gas-liquid separator B12, air completes the separation of partial moisture herein, and that isolates is useless
Liquid is also manually operable Manual draining valve through automatic drain valve B21 drainage gas-liquid separators when automatic drain valve B21 failures
B22 is promptly drained.By gas-liquid separation, treated that partial desiccation air enters adsorption tower 3 by the shut-off valve D18 of unlatching,
The electric heater 7 in adsorption tower 3 is open state, the heated control of electric energy that accumulator 5 was stored in a upper stage at this time
After device 6 regulates and controls, it is delivered to electric heater 7, the adsorbent in adsorption tower 3 is heated, purged in heating and air dual
Under effect, adsorbent dehydrates, and the moisture of abjection takes adsorption tower 3 out of by air and enters cooler A9, carries out herein
It further cools, then enters gas-liquid separator A10, air completes the separation of moisture herein, the waste liquid warp isolated
Automatic drain valve A19 drainage gas-liquid separators, be also manually operable when automatic drain valve A19 failures Manual draining valve A20 into
The urgent draining of row.By gas-liquid separation, treated that dry air enters bag filter 13, further removes various grain sizes
After dust impurities, by 14 discharge this system of drying compressed air outlet, being delivered to gas equipment supply by air pipe line makes
With.After adsorbent dehydrates, system absorbs water the stage automatically into first stage, i.e. adsorbent.Wherein, adsorption tower 2 has
Effect volume is 230m3, the internal adsorbent filled is spherical activated alumina(Al2O3), a diameter of 4 ~ 6mm, heap density is
0.80g/m3, specific surface area 340m2/ g, intensity are more than 130N/;Wherein, thermoelectric converter 3 is alkali metal thermo-electric conversion side
Formula, ranging from 105 ~ 900 DEG C of Acclimation temperature, transfer efficiency can reach 40% or so, and it is small that continuous generating dutation can reach 14000
When;Wherein, the working pressure range of ultraviolet catalyzed oil expeller 2 is 0.06 ~ 0.95MPa, dischargeable capacity 15m3, ultraviolet light
The operating voltage of generator 23 is 35V, power 100W, and luminescent spectrum energy focuses primarily upon at 320nm wavelength, averagely make
With the service life up to 8000 hours.
By this system treated compressed air, moisture removal efficiency is up to 99.4%.