CN106621822B - A kind of cleaning device and method of Ho llow fiber membrane for gas separation component - Google Patents
A kind of cleaning device and method of Ho llow fiber membrane for gas separation component Download PDFInfo
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- CN106621822B CN106621822B CN201611231933.7A CN201611231933A CN106621822B CN 106621822 B CN106621822 B CN 106621822B CN 201611231933 A CN201611231933 A CN 201611231933A CN 106621822 B CN106621822 B CN 106621822B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
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- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
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- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/18—Testing of filters, filter elements, sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/20—High temperature filtration
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of Ho llow fiber membrane for gas separation component cleaning device and methods, are made of membrane module, positive and negative two-way cleaning system, step temperature purge system and intermittent air flow perturbed system.Positive and negative two-way cleaning system is made of cleaning fluid tank, cleaning pump, pressure gauge, positive and negative two-way detergent line and exhaust-valve.Step temperature purge system is made of air compressor machine, flowmeter, control system, heater, scavenging pipeline and exhaust-valve.Intermittent air flow perturbed system is made of air compressor machine, flowmeter, control system, rough air generator, check (non-return) valve and vent valve.Apparatus of the present invention can clean the membrane module of different pollution situations, by the synthesis cleaning action of intermittent air flow perturbed system, positive and negative Bidirectional-pressure cleaning system and step temperature purge system, repair the performance of membrane module comprehensively.High to membrane module cleaning efficiency, effect is good, at low cost, simple process, easy to operate, saves the huge cost of replacement membrane module.
Description
Technical field
The present invention relates to seperation film cleaning technique fields, more particularly to a kind of the clear of Ho llow fiber membrane for gas separation component
Cleaning device and method.
Background technique
Membrane separation technique is a Xiang Gaoxiao, quick, energy-efficient new separation technology, can adapt to wanting for contemporary novel industry
It asks, therefore develops new and high technology that is relatively rapider and being considered as 21st century great development prospect.Gas separation membrane conduct
The important component of membrane separation technique is widely used to air separation, hydrogen retrieval, natural gas removing sour gas at present
(H2S、CO2Deng), organic vapor (VOCs) recycling and multiple industry fields such as dehumidification of gas.According to seperation film industry " 12
Five " develop guide, and world's gas separation membrane market scale the year two thousand twenty is estimated can to rise to 7.6 hundred million dollars/year, domestic gaseous jet simulation
Market can reach 1,000,000,000 yuans with annual 30% increasing rate, films in 2015 and device sales volume.Hollow-fibre membrane by
In its large specific surface area, loading density height, simple process, it is low without supporting layer and production cost the features such as, become gas film point
From the important branch in technology, it is widely used in the chemical industry, environment protection field such as coal, petroleum, synthesis ammonia, methanol, natural gas.
Ho llow fiber membrane for gas separation component (also known as membrane separator) is easily contaminated the more demanding of unstripped gas,
In the field of the use conditions such as coal mine, oil field difference, pollution is especially serious.Performance, which has, after membrane module is contaminated significantly decays,
Normal production needs are unable to satisfy, however the cost of the membrane module more renewed is extremely expensive, the price of single membrane module can arrive
It is first up to tens of thousands of or even hundreds of thousands.The contaminated membrane module performance of the overwhelming majority can be made to obtain greatly by scientific and effective reparation means
Amplitude promoted, by lower cost guarantee production be normally carried out, therefore to contaminated membrane module carry out cleaning repair become
It is particularly important.
The cleaning reparation of liquid separating film (micro-filtration, ultrafiltration, nanofiltration and reverse osmosis) has formed the stream for comparing specification at present
Journey and standard, but due to the material of preparing of gas separation membrane and liquid separating film, membrane formation mechanism, separation principle, use condition, guarantor
Depositing mode and application field etc. has basic difference, and the cleaning agent (such as water etc.) of liquid film may be for gas separation membrane
Pollution source cannot indiscriminately imitate liquid separating membrane module cleaning side therefore, it is necessary to study the cleaning method of suitable gas separation membrane
Method.Have at present and is standing and soaking cleaning part dtex by ultrasonic cleaning, cleaning solution on a small quantity and determines the method for gas separation membrane module, but be
System, the gas separation membrane cleaning method standardized still belong to blank, and therefore, it is necessary to study can be widely applied to various doughnut gas
The cleaning method of body separating film module.
In Chinese patent 201310597800.1, ultrasound first will be carried out by the polysulfones gas filtration film of dust and oily pollution
Wave concussion cleaning, then carry out the chemical cleaning of sodium citrate after first sodium hypochlorite.Gas filtration film is three-dimensional netted in the patent
Polyester fiber thermocompression forming after polysulfones macromolecule foaming plastics stiffeningization is formed, and filter material surface has 5-8 microns of uniform gaps.It should
Gas filtration film is not proper gas separation membrane and more like microfiltration membranes (filter medium becomes air from liquid), because
It is to sieve principle by micropore to be separated, and gas separation membrane surface truly is uniformly to cause for the gas filtration film
It is close non-porous, it is separated by dissolution-diffusion mechanism.In Chinese patent 200510103122.4, for liquid separating film
Cleaning, generating compressed gas using air compressor is opened and closed pulse valve periodically, generates periodically pulsing high pressure draught, right
Water flow in backwash inlet pipeline provides a high voltage pulse air-flow, and backwash water is made to become pulse aerated flow by even stream
Anti- cleaning operation is carried out to film.
There are obvious technical disadvantages for cleaning device and method in above-mentioned patent: 1, gas separation membrane is largely by supporting
The composite membrane that layer and functional layer are formed by physical absorption combination, can using ultrasonic oscillation or high pressure draught cleaning (especially backwash)
It can destroy combination between supporting layer and functional layer, the removing or even membrane module for leading to two layers are scrapped.2, due to hollow fibre
The loading density of dimension gas separation membrane module is big, film wire diameter is small, relatively closes inside membrane module, the capillary of film wire effect
It answers and the swelling absorption of membrane material makes remaining a large amount of cleaning agent in the membrane module after cleaning, sodium hypochlorite and sodium citrate are clear
Solid can be precipitated after the volatilization of lotion equal solvent, secondary pollution is caused to gas separation membrane module, reduces gas separation membrane module
Cleaning efficiency and effect.3, due to the material of preparing of gas separation membrane and liquid separating film, membrane formation mechanism, separation principle, make
There are basic difference, the characteristics such as size, the intensity of most of gas separation membrane silk with condition, preserving type and application field etc.
Differ larger with liquid separating film, above-mentioned patent middle arteries pressure gas stream of leaping high is likely to cause film wire and sealant junction to occur
It is broken (film wire most fragile herein), causes the destruction of membrane module unrepairable, even result in scrapping for membrane module.Therefore, gas
There are strict requirements to size, the generation flow perturbation intensity etc. that generate bubble in separation membrane cleaning process.4, gas separation membrane
Component requires that film wire is dry, cleaning in use, in above-mentioned patent cleaning method can in membrane module remaining cleaning fluid,
Cleaning solution impurity is introduced in use process, influences to separate product quality.
Summary of the invention
For the limitation for cleaning Ho llow fiber membrane for gas separation assembly method in the prior art, the present invention provides one kind
Ho llow fiber membrane for gas separation component cleaning device and method.
Technical solution of the present invention is as follows: a kind of Ho llow fiber membrane for gas separation component cleaning device, it is characterised in that: including
Ho llow fiber membrane for gas separation component, positive and negative two-way cleaning system, step temperature purge system and intermittent air flow perturbed system.
The Ho llow fiber membrane for gas separation component raw material port, infiltration residual air mouth and two infiltration ports pass through screw thread and positive backwash respectively
Piping connection；The two-way cleaning system is by cleaning fluid tank, cleaning pump, pressure gauge, positive backwash pipeline and exhaust-valve one, exhaust-valve
Two compositions, cleaning solution inlet pipe are branched off into two-way by threeway after cleaning pump and pressure gauge, then by screw thread respectively with film
Component raw material port and the connection of the infiltration port one of side, membrane module seeps residual air mouth and the infiltration port two of the other side passes through screw thread
Connect with pipeline and synthesized by threeway and forms cleaning solution liquid back pipe road all the way；The step temperature purge system is by air compressor machine, stream
Meter, control system, heater, scavenging pipeline and exhaust-valve two form；The intermittent air flow perturbed system is by air compressor machine, flow
Meter, control system, rough air generator, check (non-return) valve and vent valve composition.The step temperature purging and intermittent air flow disturbance
System pipeline is branching into two-way by threeway after air compressor machine, flowmeter and control system, after passing through heater, valve all the way
It is connected by threeway with membrane module raw material port pipeline, forms step temperature purge system；Another way by rough air generator,
Residual air mouth pipeline is seeped with membrane module by threeway after valve to be connected, and forms intermittent air flow perturbed system.
The control system includes temperature control, flow control and interval start and stop element, be may be implemented to gas flow, temperature
The accurate control of degree and chopper frequency.
The heater is the heat exchangers such as electric heating cover, thermal medium heat exchanger.
The rough air generator is different sized particles sintered plates, pulse valve or pin type air bubble generator etc..
A kind of described Ho llow fiber membrane for gas separation component cleaning device cleaning hollow fiber gas membrane module (or film point
From device) method, it is characterised in that: the method specifically comprises the following steps:
(1), the material for determining Ho llow fiber membrane for gas separation component surveys contaminated gas film assembly property
Examination, and be compared with the initial performance of membrane module (factory performance)；
(2), cleaning solution is pumped into membrane module by positive and negative two-way cleaning system, being standing and soaking certain time makes cleaning solution
Sufficiently infiltration, swelling and dissolved contaminants, then blast air pulse by intermittent air flow perturbed system, are being soaked into cleaning solution
In film wire surface formed flow perturbation, thus make pollutant be detached from film wire surface.By cleaning solution from exhaust-valve after the completion of cleaning
Discharge；
(3), cleaning solution carries out positive and negative Bidirectional-pressure cleaning by positive and negative two-way cleaning system respectively, will after the completion of cleaning
Cleaning solution is discharged from exhaust-valve；
(4), the parameter set according to control system, is gradually blown from low to high by step temperature purge system temperature
It sweeps, further removes residual contaminants and cleaning agent.The most of remaining cleaning agent of the main removal of low temperature purging and pollutant, prevent
Danger caused by only cleaning reagent is assembled as high temperature and in membrane module, high-temperature blowing can cleaning agents to remnants and organic
The progress Pintsch process such as pollutant is simultaneously fully erased, repairs the performance of hollow fiber gas membrane module thoroughly.
(5), it is tested for the property to cleaning and purge clean hollow fiber gas membrane module, and initial with membrane module
Performance (factory performance) is compared.
The Ho llow fiber membrane for gas separation component can be inner pressed or external-compression type, and the material of membrane module includes polysulfones
(PSF), the high molecular materials such as polyether sulfone (PES), polyimides (PI), polyetherimide (PEI), polyphenylene oxide (PPO).
The cleaning solution be standing and soaking the time be 2-20 hours.
Rough air stop frequency is 2-30 beats/min in the control system, and the start and stop time is identical, disturbance gas
The flow of stream is 5-20 m3/h, and scavenging period is 0.5-4 hours.
The positive and negative Bidirectional-pressure scavenging period is 0.5-4 hours, cleaning pressure 0.05-0.2MPa.
The step temperature purging air flow 30-120m3/ h, purging temperature is respectively 40-120oC, purge time is distinguished
It is 1-4 hours.
Due to the implementation of above technical scheme, the present invention has following distinguishing feature and advantage compared to the prior art:
1, it is standing and soaking and is blasted by intermittent air flow perturbed system micro- after injecting cleaning solution into membrane module with cleaning pump
Thin bubble forms flow perturbation on the film wire surface immersed in cleaning solution, so that pollutant be made to be detached from film wire surface；2, pass through
Cleaning solution is carried out positive, reversed pressurization cleaning by positive and negative two-way cleaning system respectively to hollow fiber film assembly, fast in cleaning solution
Pollutant is set to be detached from film wire surface under fast shearing force.3, the membrane module after cleaning passes through step temperature purge system temperature
It is gradually purged from low to high, the most of remaining cleaning agent of the main removal of low temperature purging and pollutant prevent cleaning reagent
Danger caused by assembling as high temperature and in membrane module, high-temperature blowing can cleaning agent to remnants and organic pollutant etc. into
Row Pintsch process is simultaneously fully erased, repairs the performance of hollow fiber gas membrane module thoroughly.4, the present invention can be mentioned effectively
The cleaning effect and efficiency of high doughnut gas film component shorten scavenging period, reduce cleaning cost, while simple process,
It is easy to operate, it can be widely applied to various hollow fiber gas membrane module cleanings.
The present invention relates to a kind of Ho llow fiber membrane for gas separation component cleaning device and methods, and equipment investment is small, operation dimension
It protects at low cost, can be cleaned for the different membrane module of pollution situation, by being standing and soaking flow perturbation system, positive,
Reversed pressurization cleaning and step temperature purging, improve cleaning effect and efficiency, shorten scavenging period, obtain the performance of membrane module
It repairs comprehensively, extends the service life of membrane module, save the huge cost of replacement membrane module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
In Fig. 1: 1. cleaning fluid tanks；2. cleaning pump；3. pressure gauge；4. exhaust-valve one；5. exhaust-valve two；6. hollow fibre
Tie up gas separation membrane module；7. air compressor machine；8. flowmeter；9. control system；10. heater；11. vent valve；12. disturbing
It takes offence flow-generator；13. check (non-return) valve；14. valve one；15. valve two；16. valve three；17. valve four；18. valve five；19.
Valve six；20. valve seven；21. raw material port；22. seeping residual air mouth；23. permeating port one；24. permeating port two.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, the invention discloses a kind of Ho llow fiber membrane for gas separation component cleaning device, including doughnut
Gas separation membrane module 6, positive and negative two-way cleaning system, step temperature purge system and intermittent air flow perturbed system, it is described in
Hollow fiber gas separation membrane module raw material port 21, infiltration residual air mouth 22, infiltration port 1, infiltration port 2 24 pass through spiral shell respectively
Line and positive backwash piping connection；The two-way cleaning system is by cleaning fluid tank 1, cleaning pump 2, pressure gauge 3, positive backwash pipeline and row
Empty valve 1, exhaust-valve 25 form, and cleaning solution inlet pipe is branched off into two-way by threeway after cleaning pump 2 and pressure gauge 3, then
It is connect respectively with the infiltration port 1 of membrane module unstripped gas 21 and side by screw thread, membrane module seeps residual air mouth 22 and the other side
Infiltration port 24 connected by screw thread with pipeline and synthesized by threeway and form cleaning solution liquid back pipe road all the way；The step temperature
Purge system is made of air compressor machine 7, flowmeter 8, control system 9, heater 10, scavenging pipeline and exhaust-valve 1；The interval
Flow perturbation system is by air compressor machine 7, flowmeter 8, control system 9, rough air generator 12, check (non-return) valve 13 and 11 groups of vent valve
At, step temperature purging and intermittent air flow perturbed system pipeline after air compressor machine 7, flowmeter 8 and control system 9 by
Threeway branches into two-way, all the way by being connected by threeway with 21 pipeline of membrane module raw material port after heater 10, forms step temperature
Spend purge system；Another way is connected by seeping 22 pipeline of residual air mouth with membrane module by threeway after rough air generator 12, is formed
Intermittent air flow perturbed system.
Its working principle is that: it determines the material of Ho llow fiber membrane for gas separation component, membrane module initial performance is surveyed
Examination.By cleaning fluid tank 1, cleaning pump 2, valve 3 16, valve 4 17 are opened, forward direction closes valve after squeezing into cleaning solution, then
Valve 5 18, valve 6 19 are opened, closes valve after reversely squeezing into cleaning solution, check (non-return) valve 13 prevents cleaning solution from entering flow perturbation
System pipeline.After being standing and soaking a period of time, by air compressor machine 7, control system 9, rough air generator 12, valve seven is opened
20 are passed through intermittent air flow disturbance cleaning, and air pulse is discharged from upper end vent valve 11, after the completion of intermittent air flow disturbance cleaning, open
Exhaust-valve 1 excludes cleaning solution.Cleaning solution passes through positive cleaning system, opens valve 3 16, valve 4 17 and reverse cleaning system
System, opening valve 5 18, valve 6 19 carry out pressurization cleaning respectively, by cleaning solution respectively from exhaust-valve 1, row after the completion of cleaning
Empty valve 25 is discharged.Setting control system parameter opens valve 1, valve 2 15, purges film by step temperature from low to high
Component, thoroughly removes residual contaminants and cleaning agent, and purge gass are emptied from exhaust-valve 1.To the hollow fiber gas cleaned
Membrane module is tested for the property, and is compared with the initial performance of membrane module (factory performance).
Embodiment 1
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polysulfone hollow fibre gas is cleaned
Separating film module tests membrane module initial performance, be pumped into cleaning solution be standing and soaking the time be 6 hours, in control system
Air-flow stop frequency is 10 beats/min, and the flow of rough air is 10 m3/ h, rough air clean 1 hour, it is positive and negative it is two-way plus
Pressing scavenging period is 1 hour, cleaning pressure 0.1MPa, step temperature purge flow rate 50m3/ h, purging temperature is respectively 60,
80,100 DEG C, purge time is respectively 2,2,1 hours.According to the same batch of concrete operations cleaning process above-mentioned, pollution level phase
Three close membrane modules are respectively component 1-3, are tested after cleaning membrane module performance, as a result referring to table 1.
Embodiment 2
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polysulfones (PSF) hollow fibre is cleaned
Tie up gas separation membrane module, membrane module initial performance is tested, be pumped into cleaning solution be standing and soaking the time be 6 hours, control
Air-flow stop frequency is 15 beats/min in system, and the flow of rough air is 20 m3/ h, rough air cleans 2 hours, positive and negative
Bidirectional-pressure scavenging period is 1 hour, cleaning pressure 0.1MPa, step temperature purge flow rate 50m3/ h, purging temperature difference
It is 60,80,100oC, purge time are respectively 2,2,1 hours.According to the same batch of concrete operations cleaning process above-mentioned, pollution journey
Spending similar three membrane modules is respectively component 4-6, is tested after cleaning membrane module performance, as a result referring to table 1.
Comparative example 1
With the method for casting hollow fiber film assembly disclosed by the invention, is impregnated 2 days using cleaning solution, do not use pulse
Flow perturbation system, remaining condition are identical as embodiment 1 and embodiment 2.It is respectively washed together according to concrete operations process above-mentioned
Three membrane modules similar in batch, pollution level, respectively component 7-9, test membrane module performance after cleaning, knot
Fruit is referring to table 1.
The membrane module of 1 embodiment 1,2 of table and comparative example 1 cleans situation comparison
As it can be seen from table 1 the performance of membrane module is by initial performance after using intermittent air flow perturbed system rinsing membrane module
50% or so promoted to 90% or more, the performance of the membrane module of processing is standing and soaking by the 50% left of initial performance using cleaning solution
It is right to be promoted to 70% or so.Intermittent air flow perturbed system can effectively remove the pollutant on film wire surface, make the repair rate of membrane module
20% or more is improved, is fully achieved using standard.
Embodiment 3
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polyimide hollow fiber is cleaned
Gas separation membrane module tests membrane module initial performance, be pumped into cleaning solution be standing and soaking the time be 10 hours, control system
Air-flow stop frequency is 10 beats/min in system, and the flow of rough air is 15 m3/ h, rough air clean 1.5 hours, positive
The scavenging period that pressurizes is 3 hours, and the reversed scavenging period that pressurizes is 1 hour, cleaning pressure 0.1MPa, step temperature purge flow rate
70m3/ h, purging temperature is respectively 60,90,120 DEG C, and purge time is respectively 2,1,2 hours.According to concrete operations stream above-mentioned
Three membrane modules (component 1-3) similar in the same batch of Cheng Qingxi, pollution level carry out parallel laboratory test, to film group after cleaning
Part performance is tested, as a result referring to table 2.
Embodiment 4
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polyimide hollow fiber is cleaned
Gas separation membrane module tests membrane module initial performance, be pumped into cleaning solution be standing and soaking the time be 10 hours, control system
Air-flow stop frequency is 10 beats/min in system, and the flow of rough air is 15 m3/ h, rough air clean 1.5 hours, positive
The scavenging period that pressurizes is 2 hours, and the reversed scavenging period that pressurizes is 1.5 hours, cleaning pressure 0.15MPa, step temperature purging
Flow 70m3/ h, purging temperature is respectively 60,90,120 DEG C, and purge time is respectively 2,1,2 hours.According to specific behaviour above-mentioned
Make three membrane modules (component 4-6) similar in the same batch of cleaning process, pollution level and carries out parallel laboratory test, it is right after cleaning
Membrane module performance is tested, as a result referring to table 2.
Comparative example 2
With the method for casting hollow fiber film assembly disclosed by the invention, positive and negative Bidirectional-pressure is not used to clean, remaining
Condition is identical as embodiment 3 and embodiment 4.It is close that same batch, pollution level are respectively washed according to concrete operations process above-mentioned
Three membrane modules, respectively component 7-9 tests membrane module performance after cleaning, as a result referring to table 2.
The membrane module of 2 embodiment 3,4 of table and comparative example 2 cleans situation comparison
From table 2 it can be seen that using positive and negative Bidirectional-pressure cleaning system rinsing membrane module compared with not using the system, film
The repair rate of component improves 20% or more, so that the performance of membrane module is restored to 80% or more by 13% or so of initial value, effectively
The pollutant on film wire surface is removed, cleaning efficiency is improved.
Embodiment 5
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polyimide hollow fiber is cleaned
Gas separation membrane module tests membrane module initial performance, be pumped into cleaning solution be standing and soaking the time be 12 hours, control system
Air-flow stop frequency is 6 beats/min in system, and the flow of rough air is 15 m3/ h, rough air clean 1 hour, positive pressurization
Scavenging period is 2 hours, and the reversed scavenging period that pressurizes is 1 hour, cleaning pressure 0.1MPa, step temperature purge flow rate
100m3/ h, purging temperature is respectively 60,90,120 DEG C, and purge time is respectively 2,3,2 hours.According to concrete operations above-mentioned
Three membrane modules (component 1-3) similar in the same batch of cleaning process, pollution level carry out parallel laboratory test, to film after cleaning
Assembly property is tested, as a result referring to table 3.
Embodiment 6
With the method for cleaning Ho llow fiber membrane for gas separation component disclosed by the invention, polyimide hollow fiber is cleaned
Gas separation membrane module tests membrane module initial performance, be pumped into cleaning solution be standing and soaking the time be 12 hours, control system
Air-flow stop frequency is 6 beats/min in system, and the flow of rough air is 15 m3/ h, rough air clean 1 hour, positive pressurization
Scavenging period is 2 hours, and the reversed scavenging period that pressurizes is 1 hour, cleaning pressure 0.1MPa, step temperature purge flow rate
80m3/ h, purging temperature is respectively 80,95,115 DEG C, and purge time is respectively 3,2,2 hours.According to concrete operations stream above-mentioned
Three membrane modules (component 4-6) similar in the same batch of Cheng Qingxi, pollution level carry out parallel laboratory test, to film group after cleaning
Part performance is tested, as a result referring to table 3.
Comparative example 3
With the method for casting hollow fiber film assembly disclosed by the invention, is purged 5 hours using room temperature, do not use ladder
Temperature purge system, remaining condition are the same as example 5 and example 6.It is respectively washed together according to concrete operations process above-mentioned
Three membrane modules similar in batch, pollution level, respectively component 7-9, test membrane module performance after cleaning, knot
Fruit is referring to table 3.
The membrane module of 3 embodiment 5,6 of table and comparative example 3 cleans situation comparison
From table 3 it can be seen that remaining cleaning agent can be removed using step temperature purge system and in high-temperature blowing item
Crack organic pollutant under part, compared with not using the system, the repair rate of membrane module improves 30% or more, makes membrane module
Performance be restored to 80% or more by 10% or so of initial value, obtain good cleaning effect, be fully achieved using standard.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of Ho llow fiber membrane for gas separation component cleaning device, it is characterised in that: including Ho llow fiber membrane for gas separation group
Part, positive and negative two-way cleaning system, step temperature purge system and intermittent air flow perturbed system, the hollow fiber gas separation
Membrane module raw material port seeps residual air mouth, infiltration port one, infiltration port two respectively by screw thread and positive backwash piping connection；Institute
Positive and negative two-way cleaning system is stated to be made of cleaning fluid tank, cleaning pump, pressure gauge, positive backwash pipeline and exhaust-valve one, exhaust-valve two,
Cleaning solution inlet pipe is branched off into two-way by threeway after cleaning pump and pressure gauge, then by screw thread respectively with membrane module raw material
Port and the connection of the infiltration port one of side, membrane module seeps residual air mouth and the infiltration port two of the other side passes through screw thread and pipeline phase
It connects and is synthesized by threeway and form cleaning solution liquid back pipe road all the way；The step temperature purge system is by air compressor machine, flowmeter, control
System, heater, scavenging pipeline and exhaust-valve one form；The intermittent air flow perturbed system is by air compressor machine, flowmeter, control system
System, rough air generator, check (non-return) valve and vent valve composition, the step temperature purging and intermittent air flow perturbed system pipeline exist
Two-way is branched by threeway after air compressor machine, flowmeter and control system, all the way by after heater by threeway and membrane module
Raw material port pipeline is connected, and forms step temperature purge system；Another way pass through rough air generator after by threeway and film group
Part seeps residual air mouth pipeline and is connected, and forms intermittent air flow perturbed system.
2. a kind of Ho llow fiber membrane for gas separation component cleaning device according to claim 1, it is characterised in that: the control
System processed includes temperature control, flow control and interval start and stop element, be may be implemented to gas flow, temperature and chopper frequency
Accurate control.
3. a kind of Ho llow fiber membrane for gas separation component cleaning device according to claim 1, it is characterised in that: described to add
Hot device is electric heating cover or thermal medium heat exchanger.
4. a kind of Ho llow fiber membrane for gas separation component cleaning device according to claim 1, it is characterised in that: described to disturb
Flow-generator of taking offence is different sized particles sintered plates, pulse valve or pin type air bubble generator.
5. with a kind of described in any item Ho llow fiber membrane for gas separation component cleaning device rinsing membrane modules of claim 1-4
Method, it is characterised in that: the method specifically comprises the following steps:
(1) material for determining Ho llow fiber membrane for gas separation component tests contaminated gas film assembly property, and with
The initial performance of membrane module is compared；
(2) cleaning solution is pumped into membrane module by positive and negative two-way cleaning system, being standing and soaking certain time soaks cleaning solution sufficiently
Profit, swelling and dissolved contaminants, then blast air pulse by intermittent air flow perturbed system, in the film being soaked into cleaning solution
Silk table face forms flow perturbation, so that pollutant be made to be detached from film wire surface, cleaning solution is discharged from exhaust-valve after the completion of cleaning；
(3) positive and negative Bidirectional-pressure cleaning is carried out by membrane module of the positive and negative two-way cleaning system to pollution respectively, cleaning is completed
Cleaning solution is discharged from exhaust-valve afterwards；
(4) parameter set according to control system, is gradually purged from low to high by step temperature purge system temperature, into
One step removes residual contaminants and cleaning agent.
6. the method for rinsing membrane module according to claim 5, it is characterised in that: doughnut gas in the step (1)
Body separating film module is inner pressed or external-compression type, and the material of membrane module includes polysulfones, polyether sulfone, polyimides, polyetherimide
Or polyphenylene oxide high molecular material.
7. the method for rinsing membrane module according to claim 5, it is characterised in that: cleaning solution is stood in the step (2)
Soaking time is 2-20 hours.
8. the method for rinsing membrane module according to claim 5, it is characterised in that: in the step (2) in control system
Rough air stop frequency is 2-30 beats/min, and the start and stop time is identical, and the flow of rough air is 5-20 m3/ h, clearly
Washing the time is 0.5-4 hours.
9. the method for rinsing membrane module according to claim 5, it is characterised in that: in the step (3) it is positive and negative it is two-way plus
Pressing scavenging period is respectively 0.5-4 hours, cleaning pressure 0.05-0.2MPa.
10. cleaning Ho llow fiber membrane for gas separation assembly method according to claim 5, it is characterised in that: the step
(4) step temperature purging air flow 30-120m in3/ h, purging temperature is respectively 40-120 DEG C, purge time is respectively 1-4
Hour.
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| CN107448273B (en) * | 2017-07-18 | 2021-02-19 | 中国电建集团河南工程公司 | Pipeline system flushing equipment and chemical cleaning method for gas turbine oil system |
| CN108502979B (en) * | 2018-04-03 | 2020-12-04 | 湖南军信环保股份有限公司 | Method for repairing nanofiltration membrane |
| CN108579309B (en) * | 2018-07-05 | 2024-04-16 | 江苏中科睿赛污染控制工程有限公司 | Oil smoke waste gas pretreatment system and method |
| CN109459282A (en) * | 2018-10-31 | 2019-03-12 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of preparation method of single hollow-fibre membrane dead-end filtration formula component |
| CN109999674B (en) * | 2018-12-06 | 2021-09-10 | 曾杰 | Cleaning and drying process and device of filter based on microwave treatment |
| CN110215845B (en) * | 2019-07-19 | 2024-02-09 | 江苏集萃智能制造技术研究所有限公司 | Ultrafiltration membrane cleaning production line and cleaning method |
| CN114377550A (en) * | 2022-01-18 | 2022-04-22 | 深圳汇芯生物医疗科技有限公司 | Filtering equipment |
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| JPS61197004A (en) * | 1985-02-25 | 1986-09-01 | Ebara Corp | Operating method for filtration device |
| AUPR692401A0 (en) * | 2001-08-09 | 2001-08-30 | U.S. Filter Wastewater Group, Inc. | Method of cleaning membrane modules |
| PL370984A1 (en) * | 2002-04-03 | 2005-06-13 | Bucher-Guyer Ag | Cross-flow filtration system and operation method therefor |
| CN102485329A (en) * | 2011-03-22 | 2012-06-06 | 绵阳美能材料科技有限公司 | External-compression hollow fiber membrane cleaning method with no backwashing process |
| CN202096893U (en) * | 2011-04-28 | 2012-01-04 | 上海交通大学 | Gas-liquid two-phase flow cleaner of hollow fiber membrane component |
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