CN108786390A - Reactor plant compressed air dehumidifying device and dehumanization method - Google Patents
Reactor plant compressed air dehumidifying device and dehumanization method Download PDFInfo
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- CN108786390A CN108786390A CN201810781784.4A CN201810781784A CN108786390A CN 108786390 A CN108786390 A CN 108786390A CN 201810781784 A CN201810781784 A CN 201810781784A CN 108786390 A CN108786390 A CN 108786390A
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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
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
Abstract
The invention discloses a kind of reactor plant compressed air dehumidifying device and dehumanization methods.The reactor plant compressed air dehumidifying device and dehumanization method of the present invention passes through pretreatment process, freeze-drying flow, absorbed type drying flow and double-filtration, compression and pre-treatment are carried out to air, compressed air is freeze-dried, absorbed type drying is carried out to compressed air after freeze-drying, secondary filtration is carried out to compressed air after absorbed type drying.The reactor plant compressed air dehumidifying device and dehumanization method actual motion of the present invention works well, and it is -18 DEG C ~ -20 DEG C that the product humidity of compressed air, which is 2% ~ 3%, dew-point temperature, and post-processing is with obvious effects, has more practical engineering value.
Description
Technical field
The invention belongs to nuclear reactor field of engineering technology, and in particular to reactor plant compressed air dehumidifying device and
Dehumanization method.
Background technology
Reactor compressed air system is reactor waste curing system, liquid waste treatment system, chimney spoke spy room, reactor
Hall air spoke visits room, regional air spoke visits room, radioactive sample spoke visits room, environmental laboratory, gas chromatograph, isotope are given birth to
It produces workshop and neutron dissipates diffraction screen and provides compressed air.
The compressed air compressed through air compressor machine, it will usually containing a certain amount of moisture, when containing in compressed air system
Many drawbacks can be caused when some excess moistures.For example, pneumatic element valve port corrosion even failure is caused to damage, cause system event
Barrier leads to the reduction of the insulating properties such as electronic equipments, reduces the accuracy of sophisticated electronics such as pneumatic instrument, metrical instrument, to life
Production process brings serious influence.Practice have shown that production efficiency caused by the unprocessed or undesirable compressed air of processing drops
Low and equipment damage, economic loss will be far above the expense needed for compressed air processing.
Reactor current compressed air system does not have set of dehumidification device and technology, non-system to solve reactor compression
This excessive problem of system air humidity, currently there is an urgent need for develop a kind of reactor plant suitable for commercial Application to be removed with compressed air
Wet method.
Invention content
A technical problem to be solved by this invention is to provide a kind of dehumidifying of reactor plant compressed air in device,
Another technical problem to be solved by this invention is to provide a kind of reactor plant compressed air dehumanization method.
The reactor plant compressed air dehumidifying device of the present invention, its main feature is that, the dehumidification device includes frequency conversion
Motor, screw-rod air compressor, air cleaner, gs-oil separator, heat exchanger, evaporator, compressor, condenser, throttle valve,
Moisture trap, automatic drain valve, water storing tank, gas tank, switching valve A, switching valve B, drain valve A, drain valve B, exhaust gas discharge
Mouth, adsorption tower, regenerator, orifice plate, check-valves A, check-valves B, dedusting oil removal filter I, dedusting oil removal filter II；It is connected
Relationship is：Variable-frequency motor drags screw-rod air compressor by transmission shaft, and admission line side leads directly to air, and the other side passes through air
The air inlet of filter connecting screw formula air compressor machine, the air inlet of the gas outlet connection gs-oil separator of screw-rod air compressor, oil
The gas outlet of gas separating device and the shell-side air inlet of heat exchanger connect, the shell-side gas outlet of heat exchanger and the shell-side of evaporator
Air inlet connects, and the shell-side gas outlet of evaporator and the air inlet of steam-water separator connect, and the entrance of automatic drain valve is connected to
The outlet of the bottom discharge mouth of steam-water separator, automatic drain valve is connected to water storing tank, and gas outlet and the heat of steam-water separator are handed over
The pipe side-inlet of parallel operation connects, and the pipe side gas outlet of heat exchanger and the air inlet of gas tank connect, the gas outlet of gas tank
It is connected with the entrance of the entrance of switching valve A and switching valve B by connecting pipe, the outlet of switching valve A passes through connecting pipe and row
The side of the entrance and adsorption tower of putting valve A is connected, and the outlet of switching valve B passes through entrance and the regeneration of connecting pipe and drain valve B
The side of tower is connected, and the outlet of drain valve A and the outlet of drain valve B are connected to Waste gas outlet, adsorption tower by connecting pipe
The other side side of orifice plate and the entrance of check-valves A are connected to by connecting pipe, the other side of regenerator passes through connecting tube
Road is connected to the other side of orifice plate and the entrance of check-valves A, and the outlet of check-valves A and the outlet of check-valves A pass through connecting pipe
It is connected to the air inlet of dedusting oil removal filter I, the gas outlet of dedusting oil removal filter I is connected to dedusting by connecting pipe and removes
The gas outlet of the air inlet of oil strainer II, dedusting oil removal filter II connects discharge duct.Evaporator tube side outlet passes through company
Take over road is connected to the entrance of compressor, and the outlet of compressor is connected to the pipe side entrance of condenser by connecting pipe, condensation
The pipe side outlet of device is connected to the entrance of throttle valve by connecting pipe, and the outlet of throttle valve is connected to evaporation by connecting pipe
The pipe side entrance of device constitutes refrigerating circuit.
The reactor plant compressed air dehumanization method of the present invention includes the following steps：
A. compression and pre-treatment are carried out to air；
B. compressed air is freeze-dried；
C. absorbed type drying is carried out to compressed air after freeze-drying；
D. secondary filtration is carried out to compressed air after absorbed type drying.
The step a includes the following steps：
A1. start variable-frequency motor, screw-rod air compressor is driven by transmission shaft, passes through the input of outside energy so that compressing
The pressure and temperature of compressed air rises in the process, and screw-rod air compressor delivery temperature is 238 DEG C.
A2. gs-oil separator carries out Oil-gas Separation, the temperature through supercooling in gs-oil separator exit to compressed air
It is 40 DEG C.
The step b includes the following steps：
B1. the compressed air that low temperature cold air comes out heat exchanger shell-side from gs-oil separator through heat exchanger tube side is pre-chilled,
The temperature and enthalpy of compressed air decline, and pressure leak source reduces.
B2. compressed air is freezed through evaporator shell-side, and the compressed air after freezing is discharged into from evaporator shell-side
Moisture trap.
B3. moisture trap separates the condensed water in compressed air after freezing, and condensed water passes through automatic drain valve
It is discharged into water storing tank, the compressed air after preliminarily dried enters gas tank by heat exchanger tube side.
The step c includes the following steps：
C1. when adsorption tower is adsorbed by drying, regenerator is regenerated, and opens switching valve A, drain valve B, compressed air is through cutting
It changes valve A entrances and enters adsorption and dehumidification in adsorption tower, be discharged by check-valves A, complete drying process；Regeneration gas passes through orifice plate section
It is regenerated into regenerator after stream decompression, the exhaust gas that regenerative process generates is discharged through drain valve B from Waste gas outlet.
C2. when adsorption tower carries out regenerative process, regenerator carries out adsorption process, opens switching valve B, drain valve A, compression
Air enters adsorption and dehumidification in regenerator from air inlet through switching valve B, and drying process is completed by check-valves B discharges；Regeneration gas
Body carries out regenerative process by entering adsorption tower after orifice plate reducing pressure by regulating flow, is discharged from Waste gas outlet through drain valve A.
C3. the operating mode switching between adsorption tower and regenerator, is controlled by the embedded MCU that device carries.
The air cleaner carries out air preliminary dust removal and filtration.The automatic drain valve is according to setting time
It is acted, steam-water separator bottom is drained.
The reactor plant compressed air dehumidifying device and dehumanization method of the present invention passes through pretreatment process, freeze-drying
Flow, absorbed type drying flow and double-filtration, have that compressed air product humidity is low, the low post-processing effect of dew-point temperature is bright
Aobvious distinguishing feature.The reactor plant compressed air dehumidifying device and dehumanization method actual motion of the present invention works well,
With more practical engineering value, product gas humidity is that 2% ~ 3%, dew-point temperature is -18 DEG C ~ -20 DEG C.
Description of the drawings
Fig. 1 is the reactor plant compressed air dehumidifying device structural schematic diagram of the present invention；
In figure, 1. variable-frequency motor, 2. transmission shaft, 3. screw-rod air compressor, 4. admission line, 5. air
8. evaporator of filter 6. gs-oil separator, 7. heat exchanger, 9. compressor 10. condenses
13. automatic drain valve of device 11. throttle valve, 12. steam-water separator, 14. water storing tank 15. is store
19. drain valve B of gas tank 16. switching valve A, 17. switching valve B, 18. drain valve A, 20. exhaust gas discharges
24. check-valves A of mouth 21. adsorption tower, 22. regenerator, 23. orifice plate, 25. check-valves B
26. 27. dedusting oil removal filter II of dedusting oil removal filter I, 28. discharge ducts.
Specific implementation mode
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the present invention reactor plant compressed air dehumidifying device include variable-frequency motor 1, transmission shaft 2,
It is screw-rod air compressor 3, admission line 4, air cleaner 5, gs-oil separator 6, heat exchanger 7, evaporator 8, compressor 9, cold
Condenser 10, throttle valve 11, steam-water separator 12, automatic drain valve 13, water storing tank 14, gas tank 15, switching valve A 16, switching valve
B17, drain valve A18, drain valve B19, exhaust piping 20, adsorption tower 21, regenerator 22, orifice plate 23, check-valves A24, check-valves
B25, dedusting oil removal filter I 26, dedusting oil removal filter II27, discharge duct 28；Its connection relation is that variable-frequency motor 1 is logical
It crosses transmission shaft 2 and drags screw-rod air compressor 3,4 side of admission line leads directly to air, and the other side connects spiral shell by air cleaner 5
The air inlet of rod-type air compressor machine 3, the air inlet of the gas outlet connection gs-oil separator 6 of screw-rod air compressor 3, gs-oil separator 6
Gas outlet connect with the shell-side air inlet of heat exchanger 7, the shell-side gas outlet of heat exchanger 7 and the shell-side air inlet of evaporator 8
Mouth connection, the shell-side gas outlet of evaporator 8 are connect with the air inlet of steam-water separator 12, and the entrance of automatic drain valve 13 is connected to
The outlet of the bottom discharge mouth of steam-water separator 12, automatic drain valve 13 is connected to water storing tank 14, the outlet of steam-water separator 12
Mouth is connect with the pipe side-inlet of heat exchanger 7, and the pipe side gas outlet of heat exchanger 7 is connect with the air inlet of gas tank 15, storage
The gas outlet of gas tank 15 is connected by connecting pipe with the entrance of the entrance of switching valve A16 and switching valve B17, switching valve A16's
Outlet is connected by connecting pipe with the side of the entrance of drain valve A18 and adsorption tower 21, and the outlet of switching valve B17 passes through connection
Pipeline is connected with the side of the entrance of drain valve B19 and regenerator 22, and the outlet of drain valve A18 and the outlet of drain valve B19 are logical
Cross connecting pipe and be connected to Waste gas outlet 20, the other side of adsorption tower 21 by connecting pipe be connected to orifice plate 23 side and
The entrance of check-valves A24, the other side of regenerator 22 are connected to the other side and the check-valves A25 of orifice plate 23 by connecting pipe
The outlet of entrance, the outlet of check-valves A24 and check-valves A25 by connecting pipe be connected to dedusting oil removal filter I26 into
The gas outlet of gas port, dedusting oil removal filter I26 is connected to the air inlet of dedusting oil removal filter II27 by connecting pipe, removes
The gas outlet of dirt oil removal filter II27 connects discharge duct 28.8 pipe side outlet of evaporator is connected to compression by connecting pipe
The entrance of machine 9, the outlet of compressor 9 are connected to the pipe side entrance of condenser 10 by connecting pipe, and the pipe side of condenser 10 goes out
Mouth is connected to the entrance of throttle valve 11 by connecting pipe, and the outlet of throttle valve 11 is connected to evaporator 8 by connecting pipe
Pipe side entrance constitutes refrigerating circuit.
Embodiment 1
The present embodiment completes air pre-treatment, freeze-drying, absorbed type drying, secondary filtration, and it is relatively wet to reach product gas
Degree be 2%, the work that dew-point temperature is -20 DEG C.
The air cleaner is winged and FHGL-7-C air filters, and preliminary dust removal and filtration is carried out to air.
The automatic drain valve is De Lixi electronics automatic drain valves, is acted according to setting time, to carbonated drink point
It is drained from device bottom.
One, air is tentatively filtered, variable-frequency motor dragging screw-rod air compressor compresses filtered air, presses
Oil-gas Separation is carried out to compressed air after contracting
1.1 in the screw-rod air compressor course of work, due to the input of outside energy, the pressure of air in entire compression process
It is in rising trend always with temperature.Since the time that air flows through screw-rod air compressor is very short, it is shorter herein during screw rod
Heat dissipation capacity very little of the formula air compressor machine to ambient enviroment, it is believed that be adiabatic compression process.For reversible adiabatic compression process, ring
Border temperature takes 20 DEG C, and the ratio between compressed air outlet pressure and inlet-pressure, which are, takes 7, and delivery temperature is 238 DEG C.
Air enters gs-oil separator after the compression of 1.2 screw-rod air compressors, carries out Oil-gas Separation and is being freezed through supercooling
The temperature of drying process inlet is 40 DEG C.
Two, the compressed air after Oil-gas Separation is freeze-dried, it is low with dried in a heat exchanger
Warm cold air carries out heat exchange, and when temperature, enthalpy decline, air has dropped pressure leak source after the compression of precooling out
It is low, it is evaporated through evaporator, compressed air enters gas-water separation link, separates moisture in gas-water separation link, tentatively
Dried compressed air carries out heat exchange with the compressed air after Oil-gas Separation, after temperature increases, freeze-drying stream
Journey terminates.
2.1 compressed airs are pre-chilled first, empty in the dried low temperature compression of heat exchanger shell-side and heat exchanger tube side
Gas carries out heat exchange, when temperature, enthalpy decline, has reduced pressure, dew point by the compressed air of precooling out, through evaporator
It is further cooling to enter gas-water separation link, moisture is separated in gas-water separation link, dried compressed air into
Enter Tube Sheet of Heat Exchanger side heat exchanging device shell-side and enter the compressed air of freezing type drying process to be pre-chilled, dried compressed air
After temperature increases, freeze-drying flow terminates.
2.2 compressed gas come out from air pre-treatment link are humid air, are by common group of vapor and dry air
At, and dry air can be considered as desired air, and because water vapour content is few possessed by humid air, specific volume is big,
Divide low, can be considered perfect gas, thus the relationship between various state parameters can utilize perfect gas state parameter it
Between relationship be indicated.
2.3 it is freeze-dried after compressed air be in saturation state, it is assumed that the moisture removed after evaporation is in vapor-liquid separation
In be totally separated, by processing compressed air be freeze-dried after temperature t 4 be 28 DEG C, freezed by processing compressed air
Saturation water capacity db4 after drying is 0.024kg/kg (dry air), the then relative humidity by processing air after being freeze-dried
It is 4%.
2.4 compressed airs freeze-drying flow is cooled to humidity higher compressed air under dew-point temperature, keeps compression empty
Vapor in gas condenses out in fluid form, to obtain dry compressed air.The base of compressed air freeze-drying
This flow includes precooling, evaporation, aqueous vapor separation, Auto-drainage etc..Wherein precooling can not only reduce the load of refrigerant compression, section
Save energy consumption, additionally it is possible to prevent the drying compressed air exit of low temperature from the outer moisture condensation of pipe occur.
Three, compressed air after freeze-drying is carried out being adsorbed by drying flow without heat, utilizes the adsorbent with water absorbing properties
Moisture in compressed air is adsorbed again, realizes that absorption and regeneration, adsorption process are working by changing operating condition
It is carried out under pressure, regenerative process carries out under normal pressure.It is low after a part of finished product compressed air decompression of regeneration of adsorbent
Dry gas is pressed to carry out, regenerative process need to consume certain finished product compressed air.
3.1 are adsorbed by drying flow without heat utilizes the adsorbent with water absorbing properties to the water in compressed air after freeze-drying
Divide and adsorbed again, realizes that the drying process to compressed air, adsorbent absorb moisture happens is that physical change, regenerated
Cheng Ze can remove the moisture in adsorbent.In order to realize the continuity for keeping work to the without interruption of drying compressed air,
Compressed air is adsorbed by drying technology and is run using bilateral, and side is adsorbed, and the other side is then regenerated.
3.2 are described with reference to the drawings the workflow that heatless regeneration is adsorbed by drying technology, and main includes adsorbing, regenerating and press
Three processes.Heatless regeneration is adsorbed by drying technology and is regenerated by the way of pressure-variable adsorption, is not needed additional defeated people's energy, is made
Adsorbent is regenerated after decompression with the dry compressed air of a part.When adsorption tower is adsorbed, regenerator into
Row regeneration, opens switching valve A, drain valve B, and compressed air enters adsorption and dehumidification in adsorption tower from from air inlet through switching valve A, so
It is discharged afterwards by check-valves A, completes drying process；Regeneration gas is regenerated by entering regeneration side after orifice plate reducing pressure by regulating flow,
Most it is discharged afterwards from Waste gas outlet through drain valve B.
Before 3.3 heatless regeneration drying process, compressed air have passed through freeze-drying, and heatless regeneration drying process air enters
Mouth temperature is 28 DEG C, and the relative humidity by processing air after freeze-drying is 4%, and the arid cycle of dried side is 15min, is done
After dry end cycle by the relative humidity of processing air be 2%.
Four, rear compressed air is adsorbed by drying to no heat and carries out secondary filtration
Finally, to passing through step 1）2）3）The compressed air of processing carries out secondary filtration, does dedusting and oil removal treatment, finished product respectively
Compressed air relative humidity is 2%, dew-point temperature is -20 DEG C.
Embodiment 2
The present embodiment completes air pre-treatment, freeze-drying, absorbed type drying, secondary filtration, and it is relatively wet to reach product gas
Degree be 3%, the work that dew-point temperature is -18 DEG C.
The air cleaner is winged and FHGL-7-C air filters, and preliminary dust removal and filtration is carried out to air.
The automatic drain valve is De Lixi electronics automatic drain valves, is acted according to setting time, to carbonated drink point
It is drained from device bottom.
One, air is tentatively filtered, variable-frequency motor dragging screw-rod air compressor compresses filtered air, presses
Oil-gas Separation is carried out to compressed air after contracting
1.1 in the screw-rod air compressor course of work, due to the input of outside energy, the pressure of air in entire compression process
It is in rising trend always with temperature.Since the time that air flows through screw-rod air compressor is very short, it is shorter herein during screw rod
Heat dissipation capacity very little of the formula air compressor machine to ambient enviroment, it is believed that be adiabatic compression process.For reversible adiabatic compression process, ring
Border temperature takes 20 DEG C, and the ratio between compressed air outlet pressure and inlet-pressure, which are, takes 7, and delivery temperature is 238 DEG C.
Air enters gs-oil separator after the compression of 1.2 screw-rod air compressors, carries out Oil-gas Separation and is being freezed through supercooling
The temperature of drying process inlet is 40 DEG C.
Two, the compressed air after Oil-gas Separation is freeze-dried, it is low with dried in a heat exchanger
Warm cold air carries out heat exchange, and when temperature, enthalpy decline, air has dropped pressure leak source after the compression of precooling out
It is low, it is evaporated through evaporator, compressed air enters gas-water separation link, separates moisture in gas-water separation link, tentatively
Dried compressed air carries out heat exchange with the compressed air after Oil-gas Separation, after temperature increases, freeze-drying stream
Journey terminates.
2.1 compressed airs are pre-chilled first, empty in the dried low temperature compression of heat exchanger shell-side and heat exchanger tube side
Gas carries out heat exchange, when temperature, enthalpy decline, has reduced pressure, dew point by the compressed air of precooling out, through evaporator
It is further cooling to enter gas-water separation link, moisture is separated in gas-water separation link, dried compressed air into
Enter Tube Sheet of Heat Exchanger side heat exchanging device shell-side and enter the compressed air of freezing type drying process to be pre-chilled, dried compressed air
After temperature increases, freeze-drying flow terminates.
2.2 compressed gas come out from air pre-treatment link are humid air, are by common group of vapor and dry air
At, and dry air can be considered as desired air, and because water vapour content is few possessed by humid air, specific volume is big,
Divide low, can be considered perfect gas, thus the relationship between various state parameters can utilize perfect gas state parameter it
Between relationship be indicated.
2.3 it is freeze-dried after compressed air be in saturation state, the moisture removed after evaporation is in vapor-liquid separation
To being totally separated, the temperature t 4 after being freeze-dried by processing compressed air is 28 DEG C, is freeze-dried by processing compressed air
Saturation water capacity db4 afterwards is 0.024kg/kg (dry air), then the relative humidity by processing air after being freeze-dried is 4%.
2.4 compressed airs freeze-drying flow is cooled to humidity higher compressed air under dew-point temperature, keeps compression empty
Vapor in gas condenses out in fluid form, to obtain dry compressed air.The base of compressed air freeze-drying
This flow includes precooling, evaporation, aqueous vapor separation, Auto-drainage etc..Wherein precooling can not only reduce the load of refrigerant compression, section
Save energy consumption, additionally it is possible to prevent the drying compressed air exit of low temperature from the outer moisture condensation of pipe occur.
Three, compressed air after freeze-drying is carried out being adsorbed by drying flow without heat, utilizes the adsorbent with water absorbing properties
Moisture in compressed air is adsorbed again, realizes that absorption and regeneration, adsorption process are working by changing operating condition
It is carried out under pressure, regenerative process carries out under normal pressure.It is low after a part of finished product compressed air decompression of regeneration of adsorbent
Dry gas is pressed to carry out, regenerative process need to consume certain finished product compressed air.
3.1 are adsorbed by drying flow without heat utilizes the adsorbent with water absorbing properties to the water in compressed air after freeze-drying
Divide and adsorbed again, realizes that the drying process to compressed air, adsorbent absorb moisture happens is that physical change, regenerated
Cheng Ze can remove the moisture in adsorbent.In order to realize the continuity for keeping work to the without interruption of drying compressed air,
Compressed air is adsorbed by drying technology and is run using bilateral, and side is adsorbed, and the other side is then regenerated.
3.2 are described with reference to the drawings the workflow that heatless regeneration is adsorbed by drying technology, and main includes adsorbing, regenerating and press
Three processes.Heatless regeneration is adsorbed by drying technology and is regenerated by the way of pressure-variable adsorption, is not needed additional defeated people's energy, is made
Adsorbent is regenerated after decompression with the dry compressed air of a part.When adsorption tower is adsorbed, regenerator into
Row regeneration, opens switching valve A, drain valve B, and compressed air enters adsorption and dehumidification in adsorption tower from from air inlet through switching valve A, so
It is discharged afterwards by check-valves A, completes drying process；Regeneration gas is regenerated by entering regeneration side after orifice plate reducing pressure by regulating flow,
Most it is discharged afterwards from Waste gas outlet through drain valve B.
Before 3.3 without heatless regeneration drying process, compressed air have passed through freeze-drying, heatless regeneration drying process air
Inlet temperature is 28 DEG C, and the relative humidity by processing air after freeze-drying is 4%, and the arid cycle of dried side is 10min,
After arid cycle by the relative humidity of processing air be 3%.
Four, rear compressed air is adsorbed by drying to no heat and carries out secondary filtration
Finally, to passing through step 1）2）3）The compressed air of processing carries out secondary filtration, does dedusting and oil removal treatment respectively, compresses
Relative air humidity is 3%, dew-point temperature is -18 DEG C.
Claims (5)
1. a kind of reactor plant compressed air dehumidifying device, it is characterised in that：The dehumidification device includes variable-frequency motor
（1）, transmission shaft（2）, screw-rod air compressor（3）, admission line（4）, air cleaner（5）, gs-oil separator（6）, heat exchange
Device（7）, evaporator（8）, compressor（9）, condenser（10）, throttle valve（11）, steam-water separator（12）, automatic drain valve
（13）, water storing tank（14）, gas tank（15）, switching valve A（16）, switching valve B（17）, drain valve A（18）, drain valve B（19）, it is useless
Feed channel（20）, adsorption tower（21）, regenerator（22）, orifice plate（23）, check-valves A（24）, check-valves B（25）, dedusting oil removing
Filter I（26）, dedusting oil removal filter II（27）, discharge duct（28）；Its connection relation is：Variable-frequency motor（1）Pass through transmission
Axis（2）Drag screw-rod air compressor（3）, admission line（4）Side leads directly to air, and the other side passes through air cleaner（5）Connection
Screw-rod air compressor（3）Air inlet, screw-rod air compressor（3）Gas outlet connect gs-oil separator（6）Air inlet, oil gas
Separator（6）Gas outlet and heat exchanger（7）Shell-side air inlet connection, heat exchanger（7）Shell-side gas outlet with evaporation
Device（8）Shell-side air inlet connection, evaporator（8）Shell-side gas outlet and steam-water separator（12）Air inlet connection, automatically
Drain valve（13）Entrance be connected to steam-water separator（12）Bottom discharge mouth, automatic drain valve（13）Outlet be connected to storage
Water pot（14）, steam-water separator（12）Gas outlet and heat exchanger（7）Pipe side-inlet connection, heat exchanger（7）Pipe
Side gas outlet and gas tank（15）Air inlet connection, gas tank（15）Gas outlet pass through connecting pipe and switching valve A（16）
Entrance and switching valve B（17）Entrance be connected, switching valve A（16）Outlet pass through connecting pipe and drain valve A（18）One
Side and adsorption tower（21）Side be connected, switching valve B（17）Outlet pass through connecting pipe and drain valve B（19）Side and again
Raw tower（22）Side be connected, drain valve A（18）The other side and drain valve B（19）The other side be connected to by connecting pipe
Waste gas outlet（20）, adsorption tower（21）The other side orifice plate is connected to by connecting pipe（23）Side and check-valves A
（24）Entrance, regenerator（22）The other side orifice plate is connected to by connecting pipe（23）The other side and check-valves A（25）
Entrance, check-valves A（24）Outlet and check-valves A（25）Outlet dedusting oil removal filter I is connected to by connecting pipe
（26）Air inlet, dedusting oil removal filter I（26）Gas outlet dedusting oil removal filter II is connected to by connecting pipe
（27）Air inlet, dedusting oil removal filter II（27）Gas outlet connect discharge duct（28）；Evaporator（8）Pipe side outlet is logical
It crosses connecting pipe and is connected to compressor（9）Entrance, compressor（9）Outlet condenser is connected to by connecting pipe（10）'s
Pipe side entrance, condenser（10）Pipe side outlet throttle valve is connected to by connecting pipe（11）Entrance, throttle valve（11）'s
Outlet is connected to evaporator by connecting pipe（8）Pipe side entrance, constitute refrigerating circuit.
2. a kind of reactor plant compressed air dehumanization method, which is characterized in that the reactor plant compressed air
Dehumanization method includes the following steps：
A. compression and pre-treatment are carried out to air；
B. compressed air is freeze-dried；
C. absorbed type drying is carried out to compressed air after freeze-drying；
D. secondary filtration is carried out to compressed air after absorbed type drying.
3. reactor plant according to claim 2 compressed air dehumanization method, it is characterised in that：The step a
Include the following steps：
A1. start variable-frequency motor（1）, pass through transmission shaft（2）Drive screw-rod air compressor（3）, by the input of outside energy,
So that the pressure and temperature of compressed air rises in compression process；
A2. it is cooled down again after carrying out Oil-gas Separation to compressed air.
4. reactor plant according to claim 2 compressed air dehumanization method, it is characterised in that：The step b
Include the following steps：
B1. dried low temperature cold air passes through heat exchanger（7）Pipe side is to heat exchanger（7）Shell-side is from Oil-gas Separation
The compressed air that device comes out is pre-chilled, and the temperature and enthalpy of compressed air decline, and pressure leak source reduces；
B2. evaporator（8）Compressed air is freezed, evaporator（8）The compressed air of discharge enters moisture trap
（12）；
B3. moisture trap（12）Condensed water in compressed air is separated, condensed water passes through automatic drain valve（13）Row
Toward water storing tank, dry compressed air is through over-heat-exchanger（7）It is sent to gas tank in pipe side（8）.
5. reactor plant according to claim 2 compressed air dehumanization method, it is characterised in that：The step c
Include the following steps：
C1. adsorption tower（21）When being adsorbed by drying, regenerator（22）It is regenerated, opens switching valve A（16）, drain valve B
（19）, compressed air is from air inlet through switching valve A（16）Into adsorption tower（21）Then middle adsorption and dehumidification passes through check-valves A
（24）Drying process is completed in discharge；Regeneration gas passes through orifice plate（23）Enter regenerator after reducing pressure by regulating flow（22）It is regenerated, most
By drain valve B（19）It is discharged into Waste gas outlet；
C2. adsorption tower（21）When being regenerated, regenerator（22）It is adsorbed by drying, opens switching valve B（17）, drain valve A
（18）, compressed air is from air inlet through switching valve B（17）Into regenerator（22）Then middle adsorption and dehumidification passes through check-valves B
（25）Drying process is completed in discharge；Regeneration gas passes through orifice plate（23）Enter adsorption tower after reducing pressure by regulating flow（21）It is regenerated, most
By drain valve A（18）It is discharged into Waste gas outlet；
C3. adsorption tower（21）And regenerator（22）Between operating mode switching, controlled by the embedded MCU that device carries
System.
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