CN203610022U - Metal palladium or palladium alloy composite membrane hydrogen purifier - Google Patents
Metal palladium or palladium alloy composite membrane hydrogen purifier Download PDFInfo
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- CN203610022U CN203610022U CN201320747176.4U CN201320747176U CN203610022U CN 203610022 U CN203610022 U CN 203610022U CN 201320747176 U CN201320747176 U CN 201320747176U CN 203610022 U CN203610022 U CN 203610022U
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 title claims abstract description 174
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000001257 hydrogen Substances 0.000 title claims abstract description 128
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 128
- 229910052763 palladium Inorganic materials 0.000 title claims abstract description 80
- 239000012528 membrane Substances 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 title claims abstract description 30
- 229910001252 Pd alloy Inorganic materials 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
- 238000010926 purge Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 72
- 230000008595 infiltration Effects 0.000 claims description 25
- 238000001764 infiltration Methods 0.000 claims description 25
- 150000002431 hydrogen Chemical class 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 24
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000306 component Substances 0.000 description 17
- 238000005485 electric heating Methods 0.000 description 15
- 239000012535 impurity Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
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- JEVVKJMRZMXFBT-XWDZUXABSA-N Lycophyll Natural products OC/C(=C/CC/C(=C\C=C\C(=C/C=C/C(=C\C=C\C=C(/C=C/C=C(\C=C\C=C(/CC/C=C(/CO)\C)\C)/C)\C)/C)\C)/C)/C JEVVKJMRZMXFBT-XWDZUXABSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- OAIJSZIZWZSQBC-GYZMGTAESA-N lycopene Chemical compound CC(C)=CCC\C(C)=C\C=C\C(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C=C(/C)CCC=C(C)C OAIJSZIZWZSQBC-GYZMGTAESA-N 0.000 description 2
- 229960004999 lycopene Drugs 0.000 description 2
- 235000012661 lycopene Nutrition 0.000 description 2
- 239000001751 lycopene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- ZCIHMQAPACOQHT-ZGMPDRQDSA-N trans-isorenieratene Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/c1c(C)ccc(C)c1C)C=CC=C(/C)C=Cc2c(C)ccc(C)c2C ZCIHMQAPACOQHT-ZGMPDRQDSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
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- 230000035699 permeability Effects 0.000 description 1
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- 238000009738 saturating Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Separation Using Semi-Permeable Membranes (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The utility model relates to a metal palladium or palladium alloy composite membrane hydrogen purifier which is composed of a manual control valve, a pneumatic control valve, a purifying assembly, a float flowmeter, a mass flow controller, a vacuum pump, a pressure sensor, a one-way valve and a back-fire relief valve, wherein the purifying assembly is used for heating, preheating, heat exchanging and hydrogen purifying; within a short time, the vacuum pump realizes switchover from nitrogen purging to hyperpure hydrogen production and pumps the hydrogen in the entire system under power failure or other emergencies, so as to prevent a palladium composite membrane in the purifying assembly from hydrogen embrittlement due to the existence of hydrogen and prolong the service life of the purifying assembly. The metal palladium or palladium alloy composite membrane hydrogen purifier has the advantages of compact structure, high heat utilization efficiency, low device investment and purifying cost and the like, and is particularly suitable for separation and purification of small and medium-sized hydrogen.
Description
Technical field
The utility model belongs to hydrogen purification technical field, relates to a kind of Metal Palladium or palladium alloy composite membrane hydrogen purifier.This purifier can be processed power-off or other emergencies automatically, and protection core component palladium-based composite membrane, extends its service life.
Background technology
Having unique hydrogen differential permeability energy, good machinery and heat endurance based on palladium-based composite membrane, it is received much concern in the application of hydrogen isolation and purification, is current common a kind of purification schemes of preparing high-purity hydrogen.
It has been generally acknowledged that, hydrogen sees through palladium film and follows dissolving-diffusion mechanism, comprises following five processes, as shown in Figure 1:
(1) diffusion process: under the promotion of concentration difference, the hydrogen molecule in the gas phase of high-pressure side is crossed boundary layer to the diffusion into the surface of palladium film;
(2) absorption dissociation process: hydrogen molecule chemisorbed occurs and be dissociated into rapidly two hydrogen atoms on palladium film surface.
(3) dissolving-diffusion process: the hydrogen atom of film adsorption is dissolved in palladium lattice and is dissociated into rapidly H
+and electronics, be diffused into afterwards mutually the film surface of low-pressure side and be combined into rapidly hydrogen atom through body;
(4) in conjunction with desorption process: the hydrogen atom on low-pressure side palladium film surface departs from the surface of palladium film and is diffused into boundary layer after being combined into hydrogen molecule;
(5) diffusion process: the hydrogen molecule in boundary layer is the diffusion in mutually to low-pressure end gas body.
Because palladium-based composite membrane contacts with hydrogen when lower than 300 ℃, " Hydrogen Brittleness Phenomena " can occur, destroy integrality and the compactness of palladium film, make it cannot carry out Hydrogen Separation and purifying, when therefore palladium-based composite membrane carries out hydrogen purification, its operating temperature requires higher than 300 ℃.And for some reason, for example, when power-off or other emergencies, cause adding thermal break, cause that palladium film temperature declines, and therefore need to remove hydrogen, to protect palladium film before palladium film temperature is lower than 300 ℃ from purification system.
Conventionally people adopt the method that inert gas (as nitrogen or helium) purges that the hydrogen in purification system is removed, and protect palladium film.But the method can not the short time in hydrogen in scavenge system, and sweep gas not will speed up again the decline of palladium film temperature through preheating, cause shorten the service life of palladium film.
Conventionally while adopting palladium film to carry out Hydrogen Separation and purifying, hydrogeneous unstripped gas generally will adopt extra heat exchanger to carry out preheating, 201210485186.5) and Chinese utility model patent " with the palladium tube hydrogen purifier of automatic blowing " (application number: 200920210345.4) all adopt extra heat exchanger to carry out heat exchange to unstripped gas as Chinese invention patent " a kind of hydrogen gas segregator " (application number:, this has not only increased plant investment, and has increased the size of device.And heating, preheating, heat exchange, insulation and hydrogen purification are integrated in one, form one independently purifying assembly will be a feasible selection.
Utility model content
When the utility model causes palladium film temperature to decline for power-off or other emergencies, provide a kind of method that adopts vavuum pump at short notice hydrogen in system to be removed automatically, protection palladium film; And a kind of hydrogen purification component application that integrates preheating and heat exchange of compact type, in hydrogen purification, is improved to efficiency of energy utilization, avoids increasing heat exchange and pre-heating device, reduce plant investment.
Concrete technical scheme of the present utility model is:
A kind of Metal Palladium or palladium alloy composite membrane hydrogen purifier, comprise manual control valve, pneumatic control valve, purifying assembly, suspended body flowmeter, mass flow controller, vavuum pump, pressure sensor, check valve, spark arrester and electric control system composition.
Described purifying assembly integrates the functions such as heating, preheating, heat exchange and purifying, and its operating temperature is 300-500 ℃, and the critical material that wherein plays purification is Metal Palladium or palladium alloy composite membrane, i.e. porous material loading type palladium or palladium alloy membrane.Vavuum pump can be realized the switching that nitrogen blowing is produced to ultra-pure hydrogen within the short time, can in power-off or other emergencies and temperature-fall period, the hydrogen in whole system be extracted, to prevent in purifying assembly that palladium-based composite membrane hydrogen embrittlement occurs because of existing of hydrogen, its vacuum is 10-80kPa.
Its internal structure of described hydrogen purifier is: the inlet end of purifying assembly P1 unstripped gas air inlet pipe is connected with one end of check valve C1, and the other end of check valve C1 is connected with one end of pneumatic control valve V8 with hand control valve V3 respectively through threeway;
The other end of pneumatic control valve V8 is in series through mass flow controller MFIC01, feed hydrogen hand control valve V4 and raw material hydrogen source successively;
The other end of hand control valve V3 is connected with one end of suspended body flowmeter FI02, and the other end of suspended body flowmeter FI02 is connected with suspended body flowmeter FI01 inlet end with one end of nitrogen hand control valve V2 respectively through threeway; The other end of nitrogen hand control valve V2 is connected with source nitrogen;
The outlet side that purifying assembly P1 oozes residual air escape pipe is provided with pressure sensor PT02, and the outlet side that purifying assembly P1 oozes residual air escape pipe is connected with mass flow controller MFIC02 inlet end;
Mass flow controller MFIC02 outlet side is connected with the outlet side of substandard product hydrogen hand control valve V6, the outlet side of vavuum pump SC01, the inlet end of spark arrester FA01 respectively through pipeline;
Mass flow controller MFIC02 outlet side is connected by pipeline through tail gas hand control valve V7 with inlet end;
The outlet side of purifying assembly P1 infiltration gas escape pipe is provided with pressure sensor PT01, the outlet side of purifying assembly P1 infiltration gas escape pipe through pipeline respectively with product hydrogen brake control valve V9, vacuumize pneumatic control valve V10 and be connected with the inlet end of substandard product hydrogen hand control valve V6, product hydrogen brake control valve V9 outlet side is connected with the external collection pipeline of product hydrogen, vacuumizes pneumatic control valve V10 outlet side and is connected with the inlet end of vavuum pump SC01; The outlet side emptying of spark arrester FA01;
In purifying assembly P1, shell separator one end of multi-channel metal palladium-based composite membrane hydrogen gas segregator is provided with sweep gas import, sweep gas for purging palladium membrane component outer wall, and sweep gas flows out by infiltration gas escape pipe;
Sweep gas import is connected with source nitrogen through sweep gas hand control valve V1, suspended body flowmeter FI01, nitrogen hand control valve V2 successively;
Compressed air source as the compressed air shut-off valve V5 of power source after by pipeline respectively with raw hydrogen brake control valve V8, vacuumize pneumatic control valve V10 and be connected with the driving gas port of product hydrogen brake control valve V9.
Described purifying assembly is made up of Metal Palladium or palladium alloy composite membrane hydrogen gas segregator, electric heating cover, heat exchange screw shell, adiabator layer, shell etc., their structure refers to the national utility application of application: integrate multi-channel metal palladium or the palladium alloy composite membrane hydrogen separation device of preheating and heat exchange, number of patent application: 201320287666.0.
This hydrogen separation device is made up of multi-channel metal palladium-based composite membrane hydrogen gas segregator, electric heating cover, heat exchange screw shell, insulation material and shell.As shown in Figure 3.
Electric heating cover is the tubular structure of hollow, and multi-channel metal palladium-based composite membrane hydrogen gas segregator is placed in electric heating cover, is provided with adiabator layer in electric heating cover outer surface, is provided with shell in adiabator layer outer surface; In the electric heating cover outside wall surface of electric heating cover and insulation material interlayer, spiral winding has heat exchanger tube, and described heat exchanger tube is to wear by two conduits the sleeve structure forming, and forms heat exchange screw shell in forming on electric heating cover outer wall;
Multi-channel metal palladium-based composite membrane hydrogen gas segregator, as shown in Figure 4, comprises that palladium membrane component, shell separator, preheating screw coil pipe, surge tank, the first infiltration gas escape pipe, first ooze residual air escape pipe, thermocouple sheath; Palladium membrane component is placed in shell separator, and in shell separator outside wall surface, helical disk is wound with preheating screw coil pipe, and palladium membrane component one end is provided with air inlet pipe, and the other end is provided with first and oozes residual air escape pipe; Surge tank is a hollow container, air inlet pipe one end is connected with palladium membrane component, the other end is connected with surge tank, preheating screw coil pipe one end is connected with surge tank, the other end is connected with the inlet tube of preheating screw coil pipe, is provided with the thermocouple sheath for placing thermocouple on surge tank; First oozes that residual air escape pipe one end is connected with palladium membrane component, the other end is connected with second one end of oozing residual air escape pipe, second ooze the emptying of residual air escape pipe or with a coated lycopene; Be provided with the first infiltration gas escape pipe in the end face of shell separator, one end of the first infiltration gas escape pipe is connected with enclosure interior, the other end is connected with infiltration gas escape pipe;
Wherein outer tube one end of heat exchange screw shell is gas product escape pipe, and the other end is connected with infiltration gas escape pipe by a VCR face seal, and the other end of infiltration gas escape pipe is connected with the first infiltration gas escape pipe; Inner tube one end of heat exchange screw shell is unstripped gas air inlet pipe, and the other end is connected with the inlet tube of preheating screw coil pipe by the 2nd VCR face seal.
Described palladium membrane component, as shown in Figure 5, ooze residual air escape pipe etc. by air inlet pipe, cone-shaped metal end socket, first, second nut, first, second carbon seal ring, multi-channel metal palladium-based composite membrane (as Fig. 4), metal winding pipe, first and form, wherein metal winding pipe causes that for being released in heating and cooling process different size changes the stress causing.
In the normal purge process of described device, feed hydrogen hand control valve, pneumatic control valve, product hydrogen brake control valve is placed in open mode, feed hydrogen mass flow controller is set charge flow rate, impurity tail-gas quality flow controller is set exhaust flow, other valve closings, the feed hydrogen hand control valve of feed hydrogen through opening, feed hydrogen mass flow controller, raw hydrogen brake control valve, check valve, enter in palladium-based composite membrane hydrogen purification assembly, after purifying, product hydrogen is exported through product hydrogen brake control valve, the tail gas that does not see through palladium-based composite membrane is discharged after impurity tail-gas quality flow controller and spark arrester.
Described device is in the time of power-off or other emergencies, substandard product hydrogen hand control valve is placed in open mode, other valve is placed in closed condition, system stops hydrogen purification, product hydrogen in system and feed hydrogen enter impurity exhaust pipe road by substandard product hydrogen hand control valve and discharge through spark arrester, reduce system pressure to normal pressure, then close this hand control valve, and pneumatic control valve will be vacuumized and vavuum pump is placed in open mode, system Raw hydrogen converges merga pass pneumatic control valve through palladium film and product hydrogen and is evacuated to impurity exhaust pipe road by vavuum pump and discharges through spark arrester under suction function, control vacuum is 10-20kPa.
Described device is in the time of soaking condition, nitrogen air inlet hand control valve V2, hand control valve V1, V3, V6 and V7 are placed in open mode, set suspended body flowmeter FI01 and FI02 flow velocity and be 50-200 ml/min, normal pressure purges 5-10 minute, then close all valves, heat up by setup program.
Device is in the time of normal cooling state, substandard product hydrogen hand control valve is placed in open mode, other valve is placed in closed condition, in system, product hydrogen and feed hydrogen enter impurity exhaust pipe road by substandard product hydrogen hand control valve and discharge through spark arrester, reduce system pressure to normal pressure, then close this hand control valve, and pneumatic control valve will be vacuumized and vavuum pump is placed in open mode, system Raw hydrogen converges merga pass through palladium film and product hydrogen and vacuumizes pneumatic control valve and be evacuated to impurity exhaust pipe road by vavuum pump and discharge through spark arrester under suction function, vacuum is 10-20kPa, keep after 1 minute, close this pneumatic control valve and vavuum pump.Nitrogen air inlet hand control valve V2, hand control valve V1, V3, V6 and V7 are placed in to open mode, set suspended body flowmeter FI01 and suspended body flowmeter FI02 flow velocity and be 50-200 ml/min, slowly increase unstripped gas side and gas product lateral pressure to normal pressure simultaneously, then open hand control valve V6 and V7, normal pressure purges, naturally cooling.
Described device is in the time that palladium-based composite membrane compactness detects, vacuumize pneumatic control valve and vavuum pump is placed in open mode, other valves are placed in closed condition, open vavuum pump, the product hydrogen side of assembly to be purified is pumped down to negative pressure and keeps negative pressure value constant, close pneumatic control valve and vavuum pump, and check that pressure sensor PT01 detected value gathers way, judge the compactness of palladium-based composite membrane with this.
Wherein can adopt the flow set of electric control system control mass flow controller and the switch of operated pneumatic valve and vavuum pump; to realize the operation of purifier under normal purge process, maintenance state, power-off or other emergencies; automatically starting safeguard measure under powering-off state even, avoids damaging because hydrogen embrittlement causes purifying assembly.
Beneficial effect
When the utility model causes palladium film temperature to decline for power-off or other emergencies, can automatically cut off hydrogen purification, automatically start vavuum pump and respective valves and within the short time, hydrogen in system removed automatically, protection palladium film, the service life of prolongation palladium film purifier; And a kind of hydrogen purification component application that integrates preheating, heat exchange, heating, insulation and hydrogen purification of compact type, in hydrogen purification, is improved to efficiency of energy utilization, avoids increasing heat exchange and pre-heating device, reduce plant investment.
Accompanying drawing explanation
Fig. 1 is that the saturating hydrogen of palladium film " dissolves-diffusion " schematic diagram of mechanism.
Fig. 2 is palladium-based composite membrane hydrogen purifier device structure flow chart.
Fig. 3 is palladium-based composite membrane hydrogen purification assembly assembly drawing.
Fig. 4 is palladium-based composite membrane hydrogen gas segregator assembly drawing.
Fig. 5 is palladium-based composite membrane assembly assembling schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is described further.It should be noted that, the example of lifting, its effect just further illustrates technical characterictic of the present utility model, rather than limits the utility model.
As shown in Figure 3, hydrogen purification assembly is made up of Metal Palladium or palladium alloy composite membrane hydrogen gas segregator 1, electric heating cover 2, heat exchange screw shell 3, adiabator layer 4, shell 5 etc.Wherein outer tube one end of heat exchange screw shell is gas product escape pipe 6, the other end is connected with infiltration gas escape pipe 9 by a VCR face seal 10, inner tube one end of heat exchange screw shell is unstripped gas air inlet pipe 7, and the other end is connected with preheating screw coil pipe 12 by the 2nd VCR face seal 11.Wherein multi-channel metal palladium-based composite membrane hydrogen gas segregator, as shown in Figure 2, ooze residual air escape pipe 206, thermocouple sheath 207 etc. and form by palladium membrane component 201, shell separator 202, preheating screw coil pipe 203, surge tank 204, the first infiltration gas escape pipe 205, second.Wherein palladium membrane component, as shown in Figure 3, by air inlet pipe 301, cone-shaped metal end socket 302(308), first, second nut 304(306), first, second carbon seal ring 303(307), multi-channel metal palladium-based composite membrane 305(is as Fig. 4), metal winding pipe 309, first oozes residual air escape pipe 310 etc. and forms, wherein metal winding pipe 309 causes that for being released in heating and cooling process different size changes the stress causing.
The tubular structure that electric heating cover 2 is hollow, multi-channel metal palladium-based composite membrane hydrogen gas segregator 1 is placed in electric heating cover 2, is provided with adiabator layer 4 in electric heating cover 2 outer surfaces, is provided with shell 5 in adiabator layer 4 outer surfaces; In electric heating cover 2 outside wall surface between electric heating cover 2 and adiabator layer 4, spiral winding has heat exchanger tube, and described heat exchanger tube is to wear by two conduits the sleeve structure forming, and forms heat exchange screw shell in forming on electric heating cover 2 outer walls;
Multi-channel metal palladium-based composite membrane hydrogen gas segregator, comprises that palladium membrane component 201, shell separator 202, preheating screw coil pipe 203, surge tank 204, the first infiltration gas escape pipe 205, second ooze residual air escape pipe 206, thermocouple sheath 207; Palladium membrane component 201 is placed in shell separator 202, and in shell separator 202 outside wall surface, helical disk is wound with preheating screw coil pipe 203, and palladium membrane component one end is provided with air inlet pipe 301, and the other end is provided with first and oozes residual air escape pipe 310; Surge tank 204 is a hollow container, air inlet pipe 301 one end are connected with palladium membrane component, the other end is connected with surge tank 204, preheating screw coil pipe 203 one end are connected with surge tank 204, the other end is connected with the inlet tube 12 of preheating screw coil pipe 203, are provided with the thermocouple sheath 207 for placing thermocouple on surge tank 204; First oozes that residual air escape pipe 310 one end are connected with palladium membrane component, the other end is connected with second one end of oozing residual air escape pipe 206, second other end that oozes residual air escape pipe 206 by the 3rd ooze 8 emptying of residual air escape pipe or with a coated lycopene; The one end that is provided with the first infiltration gas escape pipe 205, the first infiltration gas escape pipes 205 in the end face of shell separator 202 is connected with enclosure interior, the other end is connected with infiltration gas escape pipe (9);
Wherein outer tube one end of heat exchange screw shell is gas product escape pipe 6, and the other end is connected with infiltration gas escape pipe 9 by a VCR face seal 10, and the other end of infiltration gas escape pipe 9 is connected with the first infiltration gas escape pipe 205; Inner tube one end of heat exchange screw shell is unstripped gas air inlet pipe 7, and the other end is connected with the inlet tube 12 of preheating screw coil pipe 203 by the 2nd VCR face seal 11.
As shown in Figure 2, a kind of Metal Palladium of the utility model or palladium alloy composite membrane hydrogen purifier, comprise manual control valve, pneumatic control valve, purifying assembly, suspended body flowmeter, mass flow controller, vavuum pump, pressure sensor, check valve, spark arrester and electric control system.
Purifying assembly integrates the functions such as heating, preheating, heat exchange and purifying, and its operating temperature is 300-500 ℃, and the critical material that wherein plays purification is Metal Palladium or palladium alloy composite membrane, i.e. porous material loading type palladium or palladium alloy membrane.Vavuum pump can be realized the switching that nitrogen blowing is produced to ultra-pure hydrogen within the short time, can in power-off or other emergencies and temperature-fall period, the hydrogen in whole system be extracted, to prevent in purifying assembly that palladium-based composite membrane hydrogen embrittlement occurs because of existing of hydrogen, its vacuum is 10-80kPa.
Its internal structure of hydrogen purifier is: the inlet end of purifying assembly P1 unstripped gas air inlet pipe is connected with one end of check valve C1, and the other end of check valve C1 is connected with one end of pneumatic control valve V8 with hand control valve V3 respectively through threeway;
The other end of pneumatic control valve V8 is in series through mass flow controller MFIC01, feed hydrogen hand control valve V4 and raw material hydrogen source successively;
The other end of hand control valve V3 is connected with one end of suspended body flowmeter FI02, and the other end of suspended body flowmeter FI02 is connected with suspended body flowmeter FI01 inlet end with one end of nitrogen hand control valve V2 respectively through threeway; The other end of nitrogen hand control valve V2 is connected with source nitrogen;
The outlet side that purifying assembly P1 oozes residual air escape pipe is provided with pressure sensor PT02, and the outlet side that purifying assembly P1 oozes residual air escape pipe is connected with mass flow controller MFIC02 inlet end;
Mass flow controller MFIC02 outlet side is connected with the outlet side of substandard product hydrogen hand control valve V6, the outlet side of vavuum pump SC01, the inlet end of spark arrester FA01 respectively through pipeline;
Mass flow controller MFIC02 outlet side is connected by pipeline through tail gas hand control valve V7 with inlet end;
The outlet side of purifying assembly P1 infiltration gas escape pipe is provided with pressure sensor PT01, the outlet side of purifying assembly P1 infiltration gas escape pipe through pipeline respectively with product hydrogen brake control valve V9, vacuumize pneumatic control valve V10 and be connected with the inlet end of substandard product hydrogen hand control valve V6, product hydrogen brake control valve V9 outlet side is connected with the external collection pipeline of product hydrogen, vacuumizes pneumatic control valve V10 outlet side and is connected with the inlet end of vavuum pump SC01; The outlet side emptying of spark arrester FA01;
In purifying assembly P1, shell separator one end of multi-channel metal palladium-based composite membrane hydrogen gas segregator is provided with sweep gas import, sweep gas for purging palladium membrane component outer wall, and sweep gas flows out by infiltration gas escape pipe;
Sweep gas import is connected with source nitrogen through sweep gas hand control valve V1, suspended body flowmeter FI01, nitrogen hand control valve V2 successively;
Compressed air source as the compressed air shut-off valve V5 of power source after by pipeline respectively with raw hydrogen brake control valve V8, vacuumize pneumatic control valve V10 and be connected with the driving gas port of product hydrogen brake control valve V9.
A. in normal purge process, V4, V8, V9 open, other valve closings, MFIC01 sets feed hydrogen charge flow rate, MFIC02 sets impurity exhaust flow, and V4, MFIC01, V8, the C1 of feed hydrogen through opening, enters in P1, product hydrogen after purifying is exported through V9, and the impurity tail gas that does not see through palladium-based composite membrane is discharged after MFIC02 and FA01.
B. in the time of power-off or other emergencies, V6 opens, other valve closing, system stops hydrogen purification, and in system, product hydrogen and feed hydrogen enter impurity exhaust pipe road through spark arrester FA01 discharge by V6, reduce system pressure to normal pressure, then close V6, and V10 and vavuum pump are opened, system Raw hydrogen converges merga pass V10 through palladium film and product hydrogen and is evacuated to impurity exhaust pipe road by vavuum pump and discharges through FA01 under suction function, and control vacuum is 10-20kPa.
C. in the time of soaking condition, V2, V1, V3, V6 and V7 open, and set FI01 and FI02 flow velocity and are 50-200ml/min, and normal pressure purges 5-10 minute, and air in scavenge system, then closes all valves, heats up by setup program.
D. in the time of normal cooling state, V6 opens, and other valve closing reduces system pressure to normal pressure, then closes V6, and V10 and SC01 are opened, and vacuum is 10-20kPa, keeps, after 1 minute, closing V10 and SC01.V2, V1, V3, V6 and V7 are opened, set FI01 and FI02 flow velocity and be 50-200ml/min, slowly increase unstripped gas side and gas product lateral pressure to normal pressure simultaneously, then open V6 and V7, normal pressure purges, naturally cooling.
E. in the time that palladium-based composite membrane compactness detects, V10 and SC01 are placed in open mode, other valves are placed in closed condition, open SC01, subassembly product hydrogen side to be purified is pumped down to negative pressure and keeps negative pressure value constant, close V10 and SC01, and check that PT01 detected value gathers way, judge the compactness of palladium-based composite membrane with this.
Wherein: the core component that palladium-based composite membrane hydrogen purification assembly is purifier, for the purifying of hydrogen.
Vavuum pump SC01 is used for extracting purifier system hydrogen, and protection palladium-based composite membrane hydrogen purification assembly extends the purifier life-span.
Compressed air control valve V5 is the control source of the gas of pneumatic operated valve in system.
Mass flow controller MFIC01 is used for controlling feed hydrogen charge flow rate.
Mass flow controller MFIC02 is used for controlling impurity tail gas and goes out throughput, and then regulates palladium-based composite membrane both sides pressure reduction in purifying assembly.
Suspended body flowmeter FI01 is used for controlling purifying subassembly product hydrogen side nitrogen blowing flow.
Suspended body flowmeter FI02 is used for controlling purifying assembly feed hydrogen side nitrogen blowing flow.
Check valve C1 is purifying assembly air intake control valve, and gas can only enter purification system.
Pressure sensor PT01 detects and in emergency circumstances controls in power-off or other start and stop of vavuum pump for product hydrogen lateral pressure.
Pressure sensor PT02 detects for feed hydrogen lateral pressure.
Pneumatic control valve V8 is for the automatic control of feed hydrogen entrance.
Pneumatic control valve V9 is for automatically controlling the conveying of product hydrogen.
The automatic control of pneumatic control valve V10 for aspirating.
Hand control valve V1 is for the manual control of normal intensification and temperature-fall period purifying subassembly product hydrogen side nitrogen blowing.
Hand control valve V2 is for the manual control of normal intensification and the air inlet of temperature-fall period nitrogen
Hand control valve V3 is for the manual control of normal intensification and temperature-fall period purifying assembly inlet end nitrogen blowing.
Hand control valve V4 is for the manual control of feed hydrogen air inlet.
The manual control that hand control valve V6 gives vent to anger for substandard product hydrogen.
Hand control valve V7 is for the manual control of normal intensification and the outlet of temperature-fall period purifying assembly impurity tail gas.
Spark arrester FA01 is used for preventing that outside burning things which may cause a fire disaster from entering purifier inside.
The automation control of system for electric control system.
Claims (1)
1. Metal Palladium or a palladium alloy composite membrane hydrogen purifier, comprises manual control valve, pneumatic control valve, purifying assembly, suspended body flowmeter, mass flow controller, vavuum pump, pressure sensor, check valve, spark arrester;
It is characterized in that:
The inlet end of purifying assembly (P1) unstripped gas air inlet pipe is connected with one end of check valve (C1), and the other end of check valve (C1) is connected with one end of pneumatic control valve (V8) with hand control valve (V3) respectively through threeway;
The other end of pneumatic control valve (V8) is in series with raw material hydrogen source through mass flow controller (MFIC01), feed hydrogen hand control valve (V4) successively;
The other end of hand control valve (V3) is connected with one end of suspended body flowmeter (FI02), and the other end of suspended body flowmeter (FI02) is connected with suspended body flowmeter (FI01) inlet end with one end of nitrogen hand control valve (V2) respectively through threeway; The other end of nitrogen hand control valve (V2) is connected with source nitrogen;
The outlet side that purifying assembly (P1) oozes residual air escape pipe is provided with pressure sensor (PT02), and the outlet side that purifying assembly (P1) oozes residual air escape pipe is connected with mass flow controller (MFIC02) inlet end,
Mass flow controller (MFIC02) outlet side is connected with the outlet side of substandard product hydrogen hand control valve (V6), the outlet side of vavuum pump (SC01), the inlet end of spark arrester (FA01) respectively through pipeline,
Mass flow controller (MFIC02) outlet side is connected by pipeline through tail gas hand control valve (V7) with inlet end;
The outlet side of purifying assembly (P1) infiltration gas escape pipe is provided with pressure sensor (PT01), the outlet side of purifying assembly (P1) infiltration gas escape pipe through pipeline respectively with product hydrogen brake control valve (V9), vacuumize pneumatic control valve (V10) and be connected with the inlet end of substandard product hydrogen hand control valve (V6), product hydrogen brake control valve (V9) outlet side is connected with the external collection pipeline of product hydrogen, vacuumizes pneumatic control valve (V10) outlet side and is connected with the inlet end of vavuum pump (SC01); The outlet side emptying of spark arrester (FA01);
Shell separator one end of the interior multi-channel metal palladium-based composite membrane of purifying assembly (P1) hydrogen gas segregator is provided with sweep gas import, sweep gas for purging palladium membrane component outer wall, and sweep gas flows out by infiltration gas escape pipe;
Sweep gas import is connected with source nitrogen through sweep gas hand control valve (V1), suspended body flowmeter (FI01), nitrogen hand control valve (V2) successively;
Compressed air source as the compressed air shut-off valve of power source (V5) after by pipeline respectively with raw hydrogen brake control valve (V8), vacuumize pneumatic control valve (V10) and be connected with the driving gas port of product hydrogen brake control valve (V9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747176.4U CN203610022U (en) | 2013-11-21 | 2013-11-21 | Metal palladium or palladium alloy composite membrane hydrogen purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747176.4U CN203610022U (en) | 2013-11-21 | 2013-11-21 | Metal palladium or palladium alloy composite membrane hydrogen purifier |
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| Publication Number | Publication Date |
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| CN203610022U true CN203610022U (en) | 2014-05-28 |
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| CN201320747176.4U Expired - Lifetime CN203610022U (en) | 2013-11-21 | 2013-11-21 | Metal palladium or palladium alloy composite membrane hydrogen purifier |
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| CN (1) | CN203610022U (en) |
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| CN106110842A (en) * | 2016-07-08 | 2016-11-16 | 林业城 | A kind of gear type hydrogen gas segregator |
| TWI572557B (en) * | 2014-10-24 | 2017-03-01 | Japan Pionics Co Ltd | Hydrogen purification method |
| CN107469628A (en) * | 2017-09-21 | 2017-12-15 | 中国科学院上海应用物理研究所 | The device and method of gaseous state tritium and its isotope in a kind of removal fused salt |
| CN107585741A (en) * | 2017-09-30 | 2018-01-16 | 西北有色金属研究院 | A kind of ultra-pure hydrogen separator |
| CN109954372A (en) * | 2017-12-26 | 2019-07-02 | 北京有色金属研究总院 | A kind of Double-pillar gas purifier |
| CN111580475A (en) * | 2020-04-29 | 2020-08-25 | 苏州欧立通自动化科技有限公司 | Multifunctional industrial control method based on OLT-MFIC01 controller |
| CN112456440A (en) * | 2020-11-30 | 2021-03-09 | 北京航天试验技术研究所 | Hydrogen purification system |
| CN112919407A (en) * | 2019-12-05 | 2021-06-08 | 中国科学院大连化学物理研究所 | Ammonia decomposition membrane reactor and application |
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| CN113912010A (en) * | 2021-10-14 | 2022-01-11 | 德州新动能铁塔发电有限公司 | Methanol reforming hydrogen production purification device and process |
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| TWI572557B (en) * | 2014-10-24 | 2017-03-01 | Japan Pionics Co Ltd | Hydrogen purification method |
| CN106110842A (en) * | 2016-07-08 | 2016-11-16 | 林业城 | A kind of gear type hydrogen gas segregator |
| CN106110842B (en) * | 2016-07-08 | 2019-02-19 | 江苏方正环测设备有限公司 | A kind of gear type hydrogen gas segregator |
| CN107469628B (en) * | 2017-09-21 | 2019-10-01 | 中国科学院上海应用物理研究所 | The device and method of gaseous state tritium and its isotope in a kind of removal fused salt |
| CN107469628A (en) * | 2017-09-21 | 2017-12-15 | 中国科学院上海应用物理研究所 | The device and method of gaseous state tritium and its isotope in a kind of removal fused salt |
| CN107585741A (en) * | 2017-09-30 | 2018-01-16 | 西北有色金属研究院 | A kind of ultra-pure hydrogen separator |
| CN109954372A (en) * | 2017-12-26 | 2019-07-02 | 北京有色金属研究总院 | A kind of Double-pillar gas purifier |
| CN112919407A (en) * | 2019-12-05 | 2021-06-08 | 中国科学院大连化学物理研究所 | Ammonia decomposition membrane reactor and application |
| CN112919411A (en) * | 2019-12-05 | 2021-06-08 | 中国科学院大连化学物理研究所 | Membrane separator with heating and hydrogen separation functions |
| CN112919407B (en) * | 2019-12-05 | 2022-06-28 | 中国科学院大连化学物理研究所 | Ammonia decomposition membrane reactor and application |
| CN111580475A (en) * | 2020-04-29 | 2020-08-25 | 苏州欧立通自动化科技有限公司 | Multifunctional industrial control method based on OLT-MFIC01 controller |
| CN112456440A (en) * | 2020-11-30 | 2021-03-09 | 北京航天试验技术研究所 | Hydrogen purification system |
| CN113912010A (en) * | 2021-10-14 | 2022-01-11 | 德州新动能铁塔发电有限公司 | Methanol reforming hydrogen production purification device and process |
| CN114797391A (en) * | 2022-06-01 | 2022-07-29 | 中国核动力研究设计院 | Hydrogen separator, regulation and control method and research reactor coolant purification system |
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