CN102580547B - Membrane module testing method - Google Patents
Membrane module testing method Download PDFInfo
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- CN102580547B CN102580547B CN201110449155.XA CN201110449155A CN102580547B CN 102580547 B CN102580547 B CN 102580547B CN 201110449155 A CN201110449155 A CN 201110449155A CN 102580547 B CN102580547 B CN 102580547B
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- 238000012360 testing method Methods 0.000 title claims abstract description 113
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- 230000008595 infiltration Effects 0.000 claims description 85
- 238000001764 infiltration Methods 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 230000006835 compression Effects 0.000 claims description 20
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- 238000012546 transfer Methods 0.000 claims description 8
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- 231100000614 poison Toxicity 0.000 abstract description 3
- 230000007096 poisonous effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 261
- 229910000831 Steel Inorganic materials 0.000 description 33
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000000926 separation method Methods 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000012466 permeate Substances 0.000 description 9
- 239000012510 hollow fiber Substances 0.000 description 8
- 238000004088 simulation Methods 0.000 description 8
- 238000004817 gas chromatography Methods 0.000 description 6
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
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- 238000003786 synthesis reaction Methods 0.000 description 3
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- 239000003570 air Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a membrane module testing method which comprises the following steps that: delivering feed gas from a feed gas tank to a membrane module by a feed gas delivery line; separating the feed gas into permeating gas and permeating residual gas in the membrane module; and analyzing the permeating gas and the permeating residual gas by a gas analyzer. The method further comprises the following steps that: setting a permeating residual gas return line to return the permeating residual gas flowing out of the membrane module to the feed gas tank; and setting a permeating gas return line to return the permeating gas flowing out of the membrane module to the feed gas tank. According to the method provided by the invention, the test for an industrial membrane module is realized with less gas consumption and lower cost; the emission of poisonous, flammable and explosive gas is reduced; and the test safety is ensured.
Description
Technical field
The present invention relates to gas separation membrane assembly, be specifically related to the method that the stalling characteristic of gas separation membrane assembly is tested.
Background technology
Gas separation membrane is to the transmitance of variety classes gas molecule and selective different, thereby can utilize gas separation membrane from admixture of gas, to select to separate certain gas, as separate airborne nitrogen and oxygen is produced respectively purity nitrogen and oxygen-enriched air, separate nitrogen and hydrogen in synthetic ammonia tailgas, carbon dioxide and methane etc. in separating natural gas.In addition, gas separation membrane can also be used for filtering and eliminating the pollutant of automobile and industrial combustion gas, and therefore its application is very extensive.
Gas separation membrane assembly is the basic composition unit of film separation system.Usually, membrane module is that the film of some areas is placed in withstand voltage metal or nonmetal putamina, with resin binder, film and putamina is fixed and the separative element that forms.The space in membrane module is divided into two parts by film, and fluid only can see through film and arrive another part from a part wherein.
Before being installed on to film separation system, gas separation membrane assembly needs to carry out performance test.Test purpose has two: the firstth, and whether detect membrane module inside has leakage point, if there is leakage point, unstrpped gas will enter per-meate side from the feed side of film by leakage point, makes membrane module lose separation function; The secondth, detect the separating property of membrane module, film is for the permeation flux of each component in separated gas and selective.Test gas can be both pure gas, as purity nitrogen, pure oxygen, pure carbon dioxide etc., also can be the definite gaseous mixture of content, as the simulation biogas that methane concentration is 60%, gas concentration lwevel is 40%, the simulated flue gas that nitrogen gas concn is 85%, gas concentration lwevel is 15%.
As shown in Figure 1, it comprises sweep gas steel cylinder 10 ', unstripped gas steel cylinder 20 ', membrane module 30 ' and gas-chromatography 40 ' to existing a kind of lab membrane component test device.Membrane module 30 ' is divided into feed side 31 ' and per-meate side 32 ' by film 33 '.Unstripped gas steel cylinder 20 ' is connected to the feed side 31 ' of membrane module 30 ' by pipeline 21 '.Sweep gas steel cylinder 10 ' is connected to the per-meate side 32 ' of membrane module 30 ' by pipeline 11 '.And the per-meate side 32 ' of membrane module 30 ' is connected to gas-chromatography 40 ' by pipeline 41 ', the feed side 31 ' of membrane module 30 ' is connected to flowmeter 50 ' by pipeline 51 '.In addition, on pipeline 11 ' and 21 ', be respectively arranged with pressure-reducing valve 61 ' and 62 ', for steel cylinder gas is reduced pressure.On pipeline 51 ', be arranged on counterbalance valve 63 ', for regulating the pressure in membrane module 30 '.
The course of work of above-mentioned membrane module testing arrangement is as follows: the feed side 31 ' that unstripped gas is supplied to membrane module 30 ' from unstripped gas steel cylinder 20 ' through piping 21 '.Entering the per-meate side 32 ' that the part of the unstripped gas of membrane module 30 ' can be penetrated into membrane module 30 ' via film 33 ' becomes infiltration gas, and the remainder of unstripped gas can not become and ooze residual air via film 33 ' infiltration.Meanwhile, sweep gas is supplied to the per-meate side 32 ' of membrane module 30 ' through piping 11 ' from sweep gas steel cylinder 10 ', sweep gas penetrates film infiltration gas for carrying enters gas-chromatography 40 ' as tested gas through pipeline 41 '.Gas-chromatography 40 ' is for analyzing the concentration of component of the gas that penetrates film, thus the Penetration Signature of understanding film.On the other hand, the residual air of oozing in the feed side 31 ' of membrane module 30 ' enters flowmeter 50 ' through pipeline 51 ', for measuring the flow that oozes residual air.
The feature of above-mentioned method of testing is: (1) unstripped gas and sweep gas are all supplied with by high-pressure cylinder; (2) infiltration gas is carried after entering chromatography and is emitted in environment by sweep gas, oozes residual air and is also emitted in environment after flowmeter metering; (3) the infiltration gas that penetrates film is carried and enters gas-chromatography analysis by sweep gas.The method is suitable for that membrane area is less (generally only has tens cm
2) the laboratory test of membrane module.Because membrane area is less, required test gas flow is very little, and generally as long as the flow of 1～2L/min can meet test request, a standard steel cylinder (40L capacity, 10MPa pressure) can follow-on test 2000～4000 hours.As long as ventilation condition is good, the test gas of this flow is discharged in environment and is unlikely to cause danger.In addition, membrane area is less, and the permeating airflow amount that penetrates film is very little, is only generally tens mL/min, uses sweep gas that infiltration gas is carried and enters gas chromatographic column and be convenient to detect and permeate gas component.
But above-mentioned existing testing arrangement and method can not be applied to test technical grade membrane module.The membrane area of technical grade membrane module is at least at 1.0m
2what have above, reaches tens m
2, very large for testing the gas flow of technical grade membrane module, sometimes can reach 10Nm
3more than/h, if adopt the method for testing of above-mentioned laboratory test device, will produce following point: (1) test gas flow is larger, (general steel cylinder volume is 40L to high-pressure cylinder finite capacity, pressure is 10MPa, is scaled the about 4Nm of gas capacity under standard state
3), less than the one bottle of gas of just using up half an hour, even with bus-bar multiple steel cylinders of connecting, be also difficult to meet exceed the follow-on test of 24 hours.In the time that steel cylinder atmospheric pressure is reduced to below test pressure, must interrupt test change steel cylinder.A large amount of steel cylinder gas that uses makes testing cost very high as test source of the gas.(2), for some poisonous and harmful, inflammable and explosive test gas, oozing residual air and infiltration gas, to be directly discharged in environment harm very large, easily causes security incident.For example test gas is for simulation is when biogas, is discharged into concentration of methane gas in environment and reaches 5～15% and can form explosive atmosphere.(3) because technical grade membrane module membrane area is larger, the gas flow that penetrates film is also larger, with sweep gas carry infiltration gas enter gas chromatographic column test be difficult to realization.
Summary of the invention
The present invention is intended to overcome above-mentioned at least one defect of the prior art, and a kind of method of testing that is applicable to the test of technical grade membrane module is provided.
Propose a kind of membrane module testing method according to the present invention, comprise the following steps:
Unstripped gas is delivered to membrane module from unstripped gas storage tank by unstripped gas transfer pipeline;
Unstripped gas be separated into infiltration gas in membrane module and ooze residual air; And
Analyze respectively permeating gas and oozing residual air by gas analyzer,
Wherein, described method also comprises step:
Residual air return line is oozed in setting, and the residual air of oozing flowing out in membrane module is returned to unstripped gas storage tank by the described residual air return line that oozes; With
Infiltration gas return line is set, by what flow out, the infiltration gas flowing out is returned to unstripped gas storage tank by described infiltration gas return line in membrane module in membrane module.
According to one embodiment of present invention, wherein, said method comprising the steps of: gas sample pipeline is set, to the infiltration gas separating by membrane module with ooze residual air and sample respectively, and sampled gas is transported to gas analyzer by described gas sample pipeline.
According to one embodiment of present invention, wherein, the two ends of described gas sample pipeline are connected to infiltration gas return line and ooze on residual air return line, and, in described gas sample pipeline, triple valve is set, two input ports of this triple valve receive respectively sampled infiltration gas and ooze residual air, and the output port of this triple valve is connected to gas analyzer.
According to one embodiment of present invention, wherein, said method comprising the steps of: on described unstripped gas transfer pipeline, set gradually compressor, flowmeter and compression unstripped gas storage tank, make after compressor, flowmeter and compression unstripped gas storage tank, to be transported to described membrane module successively from the unstripped gas of unstripped gas storage tank.
According to one embodiment of present invention, wherein, said method comprising the steps of: water vapour feeding pipe is set, described water vapour feeding pipe is connected between compression unstripped gas storage tank and membrane module, making the compression unstripped gas that flows out from compression unstripped gas storage tank and converging from the steam of described water vapour feeding pipe, enters membrane module.
According to one embodiment of the present of invention, wherein, said method comprising the steps of: on described water vapour feeding pipe, water pot, measuring pump and heating furnace are set, measuring pump quantitatively pumps into heating furnace by water from water pot, heating furnace by water vapor with produce water vapour.
According to one embodiment of present invention, wherein, said method comprising the steps of: on residual air return line, set gradually counterbalance valve, ooze residual air freeze dryer and flowmeter described oozing, make from membrane module ooze residual air successively through counterbalance valve, ooze residual air freeze dryer and flowmeter returns to unstripped gas storage tank.
According to one embodiment of present invention, wherein, said method comprising the steps of: on described infiltration gas return line, set gradually the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer, make to return to unstripped gas storage tank through the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer successively from the infiltration gas of membrane module.
Membrane module testing method of the present invention, relates to a kind of membrane module testing arrangement, comprising: unstripped gas storage tank, for storage of raw materials gas; Membrane module, for being separated into unstripped gas in infiltration gas and oozing residual air; Unstripped gas transfer pipeline, for unstripped gas is delivered to membrane module from unstripped gas storage tank, and gas analyzer, be used for the infiltration gas separating by membrane module or ooze residual air analysis, wherein, described membrane module testing arrangement also comprises: ooze residual air return line, return to unstripped gas storage tank from the residual air of oozing flowing out in membrane module by the described residual air return line that oozes, with infiltration gas return line, return to unstripped gas storage tank from the infiltration gas flowing out in membrane module by described infiltration gas return line.
Wherein, described membrane module testing arrangement also comprises gas sample pipeline, to the infiltration gas separating by membrane module with ooze residual air and sample respectively, and sampled gas is transported to gas analyzer by described gas sample pipeline.
Wherein, the two ends of described gas sample pipeline are connected to infiltration gas return line and ooze on residual air return line, and, in described gas sample pipeline, triple valve is set, two input ports of this triple valve receive respectively sampled infiltration gas and ooze residual air, and the output port of this triple valve is connected to gas analyzer.
Wherein, on described unstripped gas transfer pipeline, be provided with compressor, flowmeter and compression unstripped gas storage tank, after compressor, flowmeter and compression unstripped gas storage tank, be transported to described membrane module successively from the unstripped gas of unstripped gas storage tank.
Wherein, described membrane module testing arrangement also comprises water vapour feeding pipe, described water vapour feeding pipe is connected between compression unstripped gas storage tank and membrane module, from compressing the compression unstripped gas of unstripped gas storage tank outflow and converging from the steam of described water vapour feeding pipe, enters membrane module.
Wherein, on described water vapour feeding pipe, be provided with water pot, measuring pump and heating furnace, measuring pump quantitatively pumps into heating furnace by water from water pot, heating furnace by water vapor with produce water vapour.
Wherein, on residual air return line, be disposed with counterbalance valve, ooze residual air freeze dryer and flowmeter described oozing, from membrane module ooze residual air successively through counterbalance valve, ooze residual air freeze dryer and flowmeter returns to unstripped gas storage tank.
Wherein, on described infiltration gas return line, be disposed with the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer, return to unstripped gas storage tank through the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer successively from the infiltration gas of membrane module.
Membrane module testing method of the present invention has the following advantages: (1) realizes the test to technical grade membrane module with less gas consumption and lower cost.(2) discharge of minimizing poisonous and harmful, flammable explosive gas, ensures test safety.(3) do not re-use sweep gas carry infiltration gas enter chromatogram, but by the mode of multiple sample points is set, after utilizing sample point sampling, use again gas analyzer analysis, do not need to use the sweep gas of for example hydrogen, further reduce testing cost and improve security.
Accompanying drawing explanation
Fig. 1 has illustrated according to the system block diagram of the membrane module testing arrangement of prior art;
Fig. 2 shows the system block diagram of membrane module testing arrangement according to an embodiment of the invention.
The specific embodiment
The membrane module testing arrangement that membrane module testing method of the present invention is described and relates to by example below in conjunction with accompanying drawing.
Fig. 2 shows the system block diagram of membrane module testing arrangement according to an embodiment of the invention.As shown in Figure 2, comprise unstripped gas steel cylinder 10 according to the membrane module testing arrangement of this embodiment, as unstripped gas supply source, for to unstripped gas storage tank 11 base feed gas.Unstripped gas storage tank 11 again through unstripped gas transfer pipeline 100 by unstripped gas delivery film assembly 60.On unstripped gas transfer pipeline 100, be provided with compressor 12, mass flowmenter 13, compression unstripped gas surge tank 14.Wherein, compressor 12 is for unstripped gas supercharging.The gas pulses that compression unstripped gas surge tank 14 exports for eliminating compressor 12.Membrane module 60 is pressure vessels that film 61 is housed, and membrane module 60 is placed in the membrane module chamber 64 that is provided with heater 65, to carry out the operating ambient temperature of controlling diaphragm assembly by heater 65.After compressor 12 superchargings, enter compression unstripped gas surge tank 14 from the unstripped gas of unstripped gas storage tank 11, and the feed side that enters membrane module 60 after compressed unstripped gas surge tank 14.Unstripped gas is separated into infiltration gas and oozes residual air after membrane module 60.And, separated infiltration gas and ooze residual air and be sampled to on-line gas analysis instrument 50 and analyze.
In addition, as shown in Figure 2, also comprise and ooze residual air return line 200 according to the membrane module testing arrangement of this embodiment, ooze residual air and return to unstripped gas storage tank 11 from membrane module 60 by oozing residual air return line 200, to recycle.Be disposed with counterbalance valve 21, ooze residual air freeze dryer 22 and flowmeter 23 along oozing residual air return flow path described oozing on residual air return line 200, from membrane module 60 ooze residual air successively through counterbalance valve 21, ooze residual air freeze dryer 22 and flowmeter 23 returns to unstripped gas storage tank 11.
In addition, as shown in Figure 2, membrane module testing arrangement also comprises infiltration gas return line 300, and infiltration gas returns to unstripped gas storage tank 11 from membrane module 60 by infiltration gas return line 300, to recycle.On infiltration gas return line 300, be disposed with the first surge tank 31, vavuum pump 32, the second surge tank 33, compressor 34 and infiltration gas freeze dryer 35 along infiltration gas return flow path, return to unstripped gas storage tank 11 through the first surge tank 31, vavuum pump 32, the second surge tank 33, compressor 34 and infiltration gas freeze dryer 35 successively from the infiltration gas of membrane module 60.Wherein, compressor 34 is for permeating gas supercharging, and vavuum pump 32 is for extracting the gas that penetrates film out from membrane module.
In addition, as shown in Figure 2, also comprise gas sample pipeline 500 according to the membrane module testing arrangement of this embodiment, for the infiltration gas to separating by membrane module 60 with ooze residual air and sample, and sampled gas is transported to gas analyzer 50.According to this embodiment, the two ends of gas sample pipeline 500 are connected to infiltration gas return line 300 and ooze on residual air return line 200, and, triple valve 51 is set in gas sample pipeline 500, two input ports of this triple valve 51 receive respectively sampled infiltration gas and ooze residual air, and the output port of this triple valve is connected to on-line gas analysis instrument 50.Like this, can adopt a gas analyzer 50, by the switching controls of triple valve 51, optionally to permeating gas or oozing residual air analysis.On-line gas analysis instrument 50, the Gasboard-3500 explosion-proof type infrared gas analyser that for example can adopt Wuhan Sifang Photoelectric Science & Technology Co., Ltd. to produce, or also can adopt Agilent7890A gas-chromatography.
In addition, as shown in Figure 2, also comprise water vapour feeding pipe 400 according to the membrane module testing arrangement of this embodiment.Water vapour feeding pipe 400 is connected between compression unstripped gas surge tank 14 and membrane module 60, on water vapour feeding pipe 400, be provided with water pot 41, measuring pump 42 and heating furnace 43, measuring pump 42 quantitatively pumps into heating furnace 43 by water from water pot 41, heating furnace 43 by water vapor with produce water vapour.Thereby, converging from the steam of water vapour feeding pipe 400 and the compression unstripped gas flowing out from compression unstripped gas surge tank 14, enter membrane module 60, to separated by membrane module 60.
In addition, although not shown in Fig. 2, can also comprise the various control instruments that are connected in pipeline according to the membrane module testing arrangement of this embodiment, as other auxiliary equipments such as flow displaying instrument, pressure display instrument table, temperature control instrument, fluid humidity display etc. and valve gears.
Utilize the process of the membrane module testing arrangement test membrane assembly shown in Fig. 2 as follows:
First use unstripped gas steel cylinder 10 to inflate in testing arrangement pipeline, after manifold pressure reaches setting value, close unstripped gas steel cylinder 10; Opening compressor 12 makes unstripped gas supercharging enter surge tank 14; Measuring pump 42 quantitatively pumps into heating furnace 43 by water from water pot 41, and the unstripped gas that heating furnace 43 flows out the water vapour after water vapor and surge tank 14 is mixed and fed into membrane module 60; Be separated into two strands of gas of the infiltration gas that oozes residual air and per-meate side of retentate side at membrane module 60 Raw gas tunicles 61; Feed side pressure regulates by counterbalance valve 21, oozes residual air and return to unstripped gas storage tank 11 after oozing dry and flowmeter 23 meterings of residual air freeze dryer 22; Infiltration gas is by vavuum pump 32 suction surge tanks 31, after vavuum pump 32, enter surge tank 33, now permeating gas is normal pressure, boost through compressor 34 again and permeate and enter unstripped gas storage tank 11 after gas freeze dryer 35 dehydration and ooze residual air and mix, and gaseous mixture can be compressed by compressor 12 again, and be transported to membrane module 60 with separated.In above-mentioned gas cyclic process, can be at any time by gas sample pipeline 500, to the infiltration gas separating by membrane module 60 with ooze residual air and sample, and by on-line gas analysis instrument 50, infiltration gas and component, the concentration etc. of oozing residual air are carried out to analytical test.
As mentioned above, according to the present invention, unstripped gas enters membrane module to be measured after compressor boosts, and tunicle is separated into infiltration gas and oozes two strands of residual air, oozes the pressure that residual air has kept unstripped gas substantially, can directly return to unstripped gas storage tank, infiltration gas is extracted out membrane module by vavuum pump, and vacuum pump outlet place infiltration gas is normal pressure, also enters unstripped gas storage tank after compressor boost, these two strands of gas again merge into unstripped gas in unstripped gas storage tank, for recycling.Therefore, form closed cycle path according to membrane module testing arrangement of the present invention, unstripped gas can be recycled in testing arrangement.
Generally speaking, membrane module testing method of the present invention has the following advantages: (1) conservation gas, before testing arrangement operation, use steel cylinder to inflate in testing arrangement pipeline, close steel cylinder after reaching certain pressure, testing arrangement run duration is without reusing steel cylinder gas.If test traffic is 10Nm
3/ h, only can use less than half an hour, and testing arrangement of the present invention adopts closed circuit circulatory system for gas in the unified steel cylinder of Open System, according to test pressure difference, a cyclinder gas can meet test request 5～10 times, and the time of each test is not limit, and has greatly saved testing cost.(2) test period testing arrangement is not to any gas of environmental emission, only just need to be by emptying gas in device in the time that test finishes, the gas flow of single voiding is the aeration quantity of steel cylinder gas before test, and the processing that is easy to ventilate, is unlikely to produce potential safety hazard.(3) multiple sample points are set in testing arrangement, sampling mode usable samples bag or be directly connected with gas component in-line analyzer, does not use sweep gas, and for example hydrogen, can further reduce testing cost, improves security.
It is below the concrete example application of membrane module testing method of the present invention.
Example 1
Use membrane module testing arrangement to investigate the permselective property energy of hollow fiber film assembly for simulation biogas.Filling 4.5m in single hollow fiber film assembly
2hollow-fibre membrane, test gas is simulation biogas (60%CH
4, 40%CO
2).First with vavuum pump, residual gas in testing arrangement pipeline is extracted out, then after replacing three times with purity nitrogen, again testing arrangement is vacuumized, then use the steel cylinder simulation biogas preparing to be in advance inflated to pressure for 0.2MPa in testing arrangement, close unstripped gas steel cylinder 10, open compressor 12, make unstripped gas boost to 0.5MPa, open vavuum pump 32 and compressor 34 and make testing arrangement operation, flow adjustment range is 1.0～10.0Nm
3/ h.If occur when adjust flux that actual flow does not reach the situation that flow is set, can in system, supplement test gas with steel cylinder gas.If environment temperature, lower than 10 ℃ Celsius, is opened the heater 65 in membrane module chamber 64, is 20～40 ℃ by Temperature Setting.Testing arrangement operation, after 1 hour, is opened heating furnace 43, and setting heating-up temperature is 150 ℃, opens measuring pump 42, and setting pump discharge is 1.0～5.0mL/min.Testing arrangement operation, can be from oozing residual air and infiltration gas sample point sampling and testing after 12 hours.
Example 2
Use test device is investigated the permselective property energy of hollow fiber film assembly for simulation natural gas.Filling 4.5m in single hollow fiber film assembly
2hollow-fibre membrane, test gas is simulation natural gas (90%CH
4, 10%CO
2).First will install residual gas in pipeline with vavuum pump extracts out, then after replacing three times with purity nitrogen, again device is vacuumized, then use the steel cylinder simulation natural gas preparing to be in advance inflated to pressure for 1.0MPa in testing arrangement, close unstripped gas steel cylinder 10, open compressor 12, make unstripped gas boost to 1.5MPa, open vavuum pump 32 and compressor 34 and make testing arrangement operation, flow adjustment range is 1.0～10.0Nm
3/ h.If occur when adjust flux that actual flow does not reach the situation that flow is set, can in system, supplement test gas with steel cylinder gas.If environment temperature, lower than 10 ℃ Celsius, is opened the heater 65 in membrane module chamber 64, is 20～40 ℃ by Temperature Setting.Testing arrangement operation, after 1 hour, is opened heating furnace 43, and setting heating-up temperature is 180 ℃, opens measuring pump 42, and setting pump discharge is 1.0～5.0mL/min.Testing arrangement operation, can be from oozing residual air and infiltration gas sample point sampling and testing after 12 hours.
Example 3
Use test device is investigated the permselective property energy of hollow fiber film assembly for simulative power plant flue gas.Filling 4.5m in single hollow fiber film assembly
2hollow-fibre membrane, test gas is simulative power plant flue gas (85%N
2, 15%CO
2).First will install residual gas in pipeline with vavuum pump extracts out, then use the steel cylinder simulative power plant flue gas preparing to be in advance inflated to pressure for 0.2MPa in testing arrangement, close unstripped gas steel cylinder 10, open compressor 12, make unstripped gas boost to 0.5MPa, open vavuum pump 32 and compressor 34 and make testing arrangement operation, flow adjustment range is 1.0～10.0Nm
3/ h.If occur when adjust flux that actual flow does not reach the situation that flow is set, can in system, supplement test gas with steel cylinder gas.If environment temperature, lower than 10 ℃ Celsius, is opened the heater 65 in membrane module chamber 64, is 20～40 ℃ by Temperature Setting.Testing arrangement operation, after 1 hour, is opened heating furnace 43, and setting heating-up temperature is 150 ℃, opens measuring pump 42, and setting pump discharge is 1.0～5.0mL/min.Testing arrangement operation, can be from oozing residual air and infiltration gas sample point sampling and testing after 12 hours.
Example 4
Use test device is investigated the permselective property energy of hollow fiber film assembly for analog synthesis gas.Filling 4.5m in single hollow fiber film assembly film
2hollow-fibre membrane, test gas is analog synthesis gas (40%H
2, 40%N
2, 20%CO
2).First with vavuum pump, residual gas in testing arrangement pipeline is extracted out, then after replacing three times with purity nitrogen, again testing arrangement is vacuumized, then use the steel cylinder analog synthesis gas preparing to be in advance inflated to pressure for 0.2MPa in testing arrangement, closing unstripped gas steel cylinder 10 opens compressor 12 and boosts to 0.5MPa, open vavuum pump 32 and compressor 34 and make device operation, flow adjustment range is 1.0～10.0Nm
3/ h.If occur when adjust flux that actual flow does not reach the situation that flow is set, can in system, supplement test gas with steel cylinder gas.If environment temperature, lower than 10 ℃ Celsius, is opened the heater 65 in membrane module chamber 64, is 20～40 ℃ by Temperature Setting.Testing arrangement operation, after 1 hour, is opened heating furnace 43, and setting heating-up temperature is 150 ℃, opens measuring pump 42, and setting pump discharge is 1.0～5.0mL/min.Testing arrangement operation, can be from oozing residual air and infiltration gas sample point sampling and testing after 12 hours.
Below just enumerated several examples of applying membrane module testing method of the present invention, but membrane module testing method of the present invention can be applied to any occasion that gas separation membrane is tested.Therefore, more than describe embodiments of the invention have only exemplarily been described, but not for limiting the present invention, know and it will be understood by those skilled in the art that, in the situation that not departing from essence of the present invention, any distortion made for the present invention all within the scope of the invention.Each accompanying drawing just schematically illustrates of the present invention, and unrestricted the present invention.
Claims (6)
1. a membrane module testing method, comprises the following steps:
Unstripped gas is delivered to membrane module from unstripped gas storage tank by unstripped gas transfer pipeline;
Unstripped gas be separated into infiltration gas in membrane module and ooze residual air; And
Analyze respectively permeating gas and oozing residual air by gas analyzer,
It is characterized in that, described method also comprises step:
Residual air return line is oozed in setting, and the residual air of oozing flowing out in membrane module is returned to unstripped gas storage tank by the described residual air return line that oozes; With
Infiltration gas return line is set, the infiltration gas flowing out in membrane module is returned to unstripped gas storage tank by described infiltration gas return line;
Wherein, on described unstripped gas transfer pipeline, set gradually compressor, flowmeter and compression unstripped gas storage tank, make after compressor, flowmeter and compression unstripped gas storage tank, to be transported to described membrane module successively from the unstripped gas of unstripped gas storage tank; And
Water vapour feeding pipe is set, and described water vapour feeding pipe is connected between compression unstripped gas storage tank and membrane module, making the compression unstripped gas that flows out from compression unstripped gas storage tank and converging from the steam of described water vapour feeding pipe, enters membrane module.
2. membrane module testing method according to claim 1, is characterized in that, further comprising the steps of:
Gas sample pipeline is set, to the infiltration gas separating by membrane module with ooze residual air and sample respectively, and sampled gas is transported to gas analyzer by described gas sample pipeline.
3. membrane module testing method according to claim 2, is characterized in that, further comprising the steps of:
The two ends of described gas sample pipeline are connected to infiltration gas return line and ooze on residual air return line, and, in described gas sample pipeline, triple valve is set, two input ports of this triple valve receive respectively sampled infiltration gas and ooze residual air, and the output port of this triple valve is connected to gas analyzer.
4. membrane module testing method according to claim 1, it is characterized in that, further comprising the steps of: on described water vapour feeding pipe, water pot, measuring pump and heating furnace are set, measuring pump quantitatively pumps into heating furnace by water from water pot, heating furnace by water vapor with produce water vapour.
5. according to the membrane module testing method described in any one in claim 1-3, it is characterized in that, further comprising the steps of:
On residual air return line, set gradually counterbalance valve, ooze residual air freeze dryer and flowmeter described oozing, make from membrane module ooze residual air successively through counterbalance valve, ooze residual air freeze dryer and flowmeter returns to unstripped gas storage tank.
6. according to the membrane module testing method described in any one in claim 1-3, it is characterized in that, further comprising the steps of:
On described infiltration gas return line, set gradually the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer, make to return to unstripped gas storage tank through the first infiltration gas surge tank, vavuum pump, the second infiltration gas surge tank, infiltration air compressor and infiltration gas freeze dryer successively from the infiltration gas of membrane module.
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| CN103255048B (en) * | 2013-04-19 | 2014-08-13 | 北京科技大学 | Device and method for fixing carbon dioxide by utilizing biomineralization of spirulina platensis in seawater system |
| CN103432909B (en) * | 2013-08-02 | 2015-02-18 | 中膜科技(苏州)有限公司 | Membrane module performance detection method |
| CN104069742B (en) * | 2014-07-10 | 2017-04-12 | 马钢(集团)控股有限公司 | Membrane element detection device for desalting water station and membrane element detection method |
| CN106017957A (en) * | 2016-05-26 | 2016-10-12 | 天邦膜技术国家工程研究中心有限责任公司 | Helium-containing water-soluble gas dehydration unit evaluation system |
| CN106621827B (en) * | 2016-12-14 | 2023-06-20 | 江苏久膜高科技股份有限公司 | Flat membrane permeability test assembly |
| KR101963101B1 (en) * | 2017-07-28 | 2019-07-31 | 한국전력공사 | System for evaluating performance of carbon dioxide selective membrane plant and appratus for the system |
| KR101919302B1 (en) * | 2017-07-28 | 2018-11-19 | 한국전력공사 | System for detecting malfunction of carbon dioxide selective membrane plant |
| CN107789991A (en) * | 2017-12-04 | 2018-03-13 | 南京九思高科技有限公司 | The detection means and detection method of preferential organic gas seperation film permeance property thoroughly |
| JP7022089B2 (en) * | 2019-03-07 | 2022-02-17 | 株式会社日本トリム | Method for determining the degree of wear of hydrogen addition device and hydrogen permeable membrane |
| CN111266015B (en) * | 2020-03-05 | 2022-07-08 | 天津工业大学 | Constant volume variable pressure method test system of gas transmittance |
| CN112808016B (en) * | 2021-01-06 | 2022-06-28 | 中国原子能科学研究院 | Membrane module testing device, membrane module testing system and membrane module testing method |
| CN116426974A (en) * | 2023-03-03 | 2023-07-14 | 浙江蓝能氢能科技股份有限公司 | Gas permeation system and testing method of electrolytic hydrogen production device |
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