CN204447689U - Gas separation membrane is used to carry out the apparatus system of purifying - Google Patents
Gas separation membrane is used to carry out the apparatus system of purifying Download PDFInfo
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- CN204447689U CN204447689U CN201520060464.1U CN201520060464U CN204447689U CN 204447689 U CN204447689 U CN 204447689U CN 201520060464 U CN201520060464 U CN 201520060464U CN 204447689 U CN204447689 U CN 204447689U
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Abstract
The utility model openly uses gas separation membrane to carry out the apparatus system of purifying, comprise mixing arrangement, pretreatment unit and three sections of gas separation membrane element, described mixing arrangement two ends are communicated with unstripped gas and pretreatment unit respectively, gas through pretreatment unit laggard enter first paragraph gas separation membrane element air inlet, first paragraph separation membrane element impermeable gas is communicated with second segment separation membrane element air inlet, first paragraph and second segment separation membrane element permeate gas and are communicated with the 3rd section of separation membrane element air inlet through mixed flow tank, 3rd section of separation membrane element impermeable gas gas outlet place establishes Back pressure control valve, and be communicated with mixing arrangement air inlet circulation purification, second segment separation membrane element impermeable gas is tail gas, 3rd section of separation membrane element infiltration gas is gas product.The utility model uses three sections of film unit separating-purifyings, and can realize the abundant purification to gases such as helium, hydrogen, carbon dioxide, the rate of recovery is higher, and system structure of device is simply compact, is adapted to suitability for industrialized production.
Description
Technical field
The utility model relates to gas purification, and particularly a kind of gas separation membrane that uses carries out the apparatus system of purifying.
Background technology
Helium is that defence and military and high-tech industry develop one of indispensable rare strategic goods and materials.Natural gas containing helium is still the exclusive source of suitability for industrialized production helium so far.China's helium resource is quite poor, and content is very low, and extract difficulty large, cost is high.Therefore research and develop advanced extracting helium from natural gas technology, and purifications is carried out to the helium used in explained hereafter reclaim, for improving economy that helium produces, ensure country helium safely and promotion China's natural gas to carry helium industrial expansion significant.
Current helium purifying technique mainly comprises pressure-variable adsorption (PSA) technique, low-temperature deep technique and membrane process etc.
The principle of pressure-variable adsorption (PSA) technique utilizes solid absorbent to realize gas purification to the adsorption capacity difference of gas with various.When gas is by adsorption bed, allow the major part of one (or several) gas in mist be attracted on bed, fraction flows out; Allow another (or several) gas major part in mist flow out, fraction is attracted on bed; Thus reach the object improving gas purity.Pressure-variable adsorption belongs to batch processed technique, and solid absorbent needs to regenerate, and therefore technology controlling and process is more complicated, and the rate of recovery of pressure swing adsorption technique is relatively low simultaneously.
Low-temperature deep technique is comparatively ripe, but cost of investment and energy consumption are all higher.
The principle of membrane separation process is that the dissolving diffusion rate utilizing each gas component in membrane material is different, causes gas with various to be separated by the infiltration rate difference of membranous wall under the effect of film both sides partial pressure difference.Gas membrane Seperation Technology has that technique is simple, convenient operating maintenance, cost of investment and operating cost are lower, do not use the advantage such as chemicals and non-wastewater discharge, and compare other technique, membrane separation process has obvious advantage.
As patent document CN203874647U discloses, a kind of embrane method helium purifying plant system and patent document CN104001409A disclose a kind of embrane method helium purifying plant system and technique to prior art, two sections of patents all have employed membrane separation technique, but their apparatus system only has first order hollow-fibre membrane and second level hollow-fibre membrane, the system of this two-stage diffusion barrier group possibly cannot realize the abundant purification of helium, just cannot obtain the high helium of purity; In addition, two sections of patents are provided with compressor between hollow fiber film and second level hollow-fibre membrane in a first stage, and this makes whole purifying plant system become complicated, also may increase the operating cost of system.
Utility model content
The purpose of this utility model will provide simply a kind of and have comparatively high product gas purity and the rate of recovery, uses gas separation membrane to carry out the apparatus system of purifying, and can solve one or more in above-mentioned prior art problem.
According to an aspect of the present utility model, provide and use gas separation membrane to carry out the apparatus system of purifying, comprise mixing arrangement, pretreatment unit, first paragraph gas separation membrane element, second segment gas separation membrane element, the 3rd section of gas separation membrane element and post-processing unit.
First paragraph gas separation membrane element, second segment gas separation membrane element and the 3rd section of gas separation membrane element are respectively equipped with air inlet, impermeable gas gas outlet and infiltration gas gas outlet.
Wherein, the air inlet of mixing arrangement is communicated with raw material source of the gas, and the gas outlet of mixing arrangement is communicated with the air inlet of pretreatment unit, and the gas outlet of pretreatment unit is communicated with the air inlet of first paragraph gas separation membrane element.
The impermeable gas gas outlet of first paragraph gas separation membrane element is communicated with the air inlet of second segment gas separation membrane element, after the infiltration gas of first paragraph gas separation membrane element mixes with the infiltration gas of second segment gas separation membrane element, be communicated with by the air inlet of post-processing unit with described 3rd section of gas separation membrane element, the impermeable gas gas outlet of the 3rd section of gas separation membrane element flows to the air inlet of described mixing arrangement by back of pipeline, namely the impermeable gas gas outlet of second segment gas separation membrane element is offgas outlet, namely the infiltration gas gas outlet of the 3rd section of gas separation membrane element is product gas port.
Its beneficial effect is, owing to have employed the purifying technique of three sections of gas separation membranes, therefore can realize the abundant purification to gas, improves gas reclaiming rate.
In some embodiments, pretreatment unit comprises compression set, filter, drying device and heater successively, namely the air inlet of compression set is the air inlet of pretreatment unit, the gas outlet of compression set is communicated with filter air inlet, filter gas outlet is communicated with described drying device air inlet, drying device gas outlet is communicated with the air inlet of heater, and namely the gas outlet of heater is the gas outlet of pretreatment unit.Its beneficial effect is, because compression set passes through Compressed Gas, producing a pressure differential makes gas better realize being separated by diffusion barrier as driving force, due to the impurity substances that filter is to remove in unstripped gas, drying device is to remove the unnecessary moisture of unstripped gas, heater is the temperature in order to make unstripped gas reach certain, and because membrane separation technique is non-low temperature process, gas temperature suitable before entering separation membrane element can make UF membrane efficiency higher.
In some embodiments, post-processing unit comprises mixed flow tank, not containing compression set.Its beneficial effect is, the principle due to membrane separation process is that the dissolving diffusion rate utilizing each gas component in membrane material is different, causes gas with various to be separated by the infiltration rate difference of membranous wall under the effect by film both sides partial pressure difference.3rd section of gas separation membrane element does not use compressor to carry out gas recompression and produces pressure differential, but relies on the per-meate side back pressure of first paragraph separation membrane element and second segment separation membrane element to realize gas separaion purification as driving force.So just, can simplification device, make system compacter.
In some embodiments, the pipeline of the impermeable gas gas outlet connection pretreatment unit air inlet of the 3rd section of gas separation membrane element is provided with Back pressure control valve.Its beneficial effect is, Back pressure control valve is in order to upstream pressure is remained on setting value, also provides the 3rd section of gas separation membrane element osmotic driving force, improves the separating-purifying efficiency of gas in the 3rd section of gas separation membrane element.
In some embodiments, first paragraph gas separation membrane element, second segment gas separation membrane element and the 3rd section of gas separation membrane element comprise one or more gas separation membrane module that is in parallel or serial communication respectively.Its beneficial effect is, due between each section of gas separation membrane element, there is a preferably assembled scheme in the number of separating film module, by calculating the preferred number of the separating film module of each section of gas separation membrane element, not only can improve gas purification efficiency and the rate of recovery, also can avoid the waste of separating film module simultaneously, reduce process costs.
In some embodiments, apparatus system can be applied to the purification of helium or hydrogen or carbon dioxide.
The purifying plant system that the utility model provides uses the purifying technique of three sections of gas separation membranes, and can realize the abundant purification to helium, helium recovery rate is higher; The simple and compact equipment structure of apparatus system, applied widely, easy to operate, safe and reliable, automaticity is high, is adapted to suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that the utilization gas separation membrane of the utility model one embodiment carries out the apparatus system of purifying.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the utility model uses gas separation membrane to carry out an embodiment of the apparatus system of purification helium, comprises mixing arrangement 1, pretreatment unit 11, first paragraph gas separation membrane element 6, second segment gas separation membrane element 7, post-processing unit 12 and the 3rd section of gas separation membrane element 9.
Described pretreatment unit 11 comprises compression set 2, filter 3, drying device 4 and heater 5, wherein, mixing arrangement 1 can be mixed gas tank, compression set 2 can be compressor, filter 3 can be pneumatic filter, drying device 4 can be gas drying tube, and heater 5 can be gas heater.
Described first paragraph gas separation membrane element 6, second segment gas separation membrane element 7 and the 3rd section of gas separation membrane element 9 are respectively equipped with air inlet, impermeable gas gas outlet and infiltration gas gas outlet.
Described first paragraph gas separation membrane element 6, second segment gas separation membrane element 7 and the 3rd section of gas separation membrane element 9 comprise one or more gas separation membrane module that is in parallel or that be connected in series respectively.Each gas separation membrane module contains import, oozes vent outlet and impermeable gas outlet, the infiltration gas of first separating film module is communicated with the import of second separating film module, the like, last separating film module ooze the infiltration gas gas outlet that vent outlet is this separation membrane element, and the impermeable gas of each separating film module flows out from the impermeable gas gas outlet of separation membrane element.
Described gas separation membrane module structure is the one in hollow-fibre membrane, rolled film and board-like film.
Namely the impermeable gas gas outlet of described second segment gas separation membrane element 7 is offgas outlet, the pipeline of offgas outlet can be provided with dew point temperature measurements instrument (not showing in Fig. 1), real-time monitoring gas dewpoint, prevents gas from solidifying in separating film module; Offgas outlet can connect gas collector or straight-through air.
Described post-processing unit 12 only includes mixed flow tank 8, not containing compression set.The pipeline that the impermeable gas gas outlet of described 3rd section of gas separation membrane element 9 is communicated with described compression set 2 air inlet is provided with Back pressure control valve 10.Principle due to membrane separation process is that the dissolving diffusion rate utilizing each gas component in membrane material is different, causes gas with various to be separated by the infiltration rate difference of membranous wall under the effect by film both sides partial pressure difference.3rd section of gas separation membrane element does not use compressor to carry out gas recompression and produces pressure differential, but rely on the per-meate side back pressure of first paragraph separation membrane element and second segment separation membrane element as driving force, upstream pressure is remained on setting value by Back pressure control valve simultaneously, also provide the 3rd section of gas separation membrane element 9 osmotic driving force, the better like this gas separaion that realizes is purified.
The infiltration gas gas outlet of described 3rd section of gas separation membrane element 9 connects helium purity detecting device (not showing in Fig. 1), for the purity detecting to helium aerogenesis, when helium purity is more than 99%, when meeting helium standard GB/T/T4844-2011 industry helium purity requirement, collect helium in air storage bag, or connect other back segment purifying techniques, to reach the high-purity helium requirement met in helium standard GB/T/T4844-2011.
Below for adopting the purifying technique of a kind of unstripped gas containing helium of the purification of the apparatus system shown in Fig. 1, comprise the following steps:
(1) unstripped gas (composition 30%vol helium and 70%vol nitrogen) enters mixing arrangement 1 and mixes, after compressed device 2 compression is pressurized to 10 Bar ~ 16 Bar, then filter 3, drying device 4 and heater 5 pretreatment is entered successively, the primary standard in compressed air ISO8573-1 is met when the dust-laden and oil concentration that detect gas after pretreatment, dew-point temperature meeting tier 2 standard, after dry-bulb temperature reaches 15 ~ 40 DEG C, the primary separation that the air inlet that gas enters first paragraph gas separation membrane element 6 carries out helium and nitrogen is purified;
(2) the impermeable gas gas outlet of first paragraph gas separation membrane element 6 can obtain the nitrogen of 70% ~ 90%vol purity, and the air inlet that then gas of this gas outlet enters second segment gas separation membrane element 7 carries out the purification of gas secondary;
(3) the impermeable gas gas outlet of second segment gas separation membrane element 6 obtains the tail gas of mainly nitrogen gas component, and nitrogen gas purity now reaches more than 97%vol, meets process gas and recycles requirement, can be collected in nitrogen storage air bag;
(4) the infiltration gas of first paragraph gas separation membrane element 6 and the infiltration gas of second segment separation membrane element 7 enter mixed flow tank 8 respectively, reach 80%vol to 90%vol purity helium after mixing, then the air inlet entering the 3rd section of gas separation membrane element 9 carries out three grades of purifications;
The impermeable gas of (5) the 3rd sections of gas separation membrane element 9 is back to the air inlet of mixing arrangement 1, mixes containing helium unstrpped gas with step (1), then enters compression set 2 and carries out circulation purification, to improve the rate of recovery of helium;
(6) by the back pressure regulating valve 10 of adjustment the 3rd section of gas separation membrane element 9 impermeable side, making the 3rd section of gas separation membrane element 9 permeate helium purity in gas is more than 99%, namely helium standard GB/T/T4844-2011 industry helium purity requirement is met, process cycles instructions for use can be met, or connect other back segment purifying techniques, to reach the high-purity helium requirement met in helium standard GB/T/T4844-2011.
Apparatus system of the present utility model can be applied to the purification of helium or hydrogen or carbon dioxide.The purifying plant system that the utility model provides uses the purifying technique of three sections of gas separation membranes, and can realize the abundant purification to gas, gas reclaiming rate is higher; The simple and compact equipment structure of apparatus system, applied widely, easy to operate, safe and reliable, automaticity is high, is adapted to suitability for industrialized production.
Above is only real-time modes more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. use gas separation membrane to carry out the apparatus system of purifying, it is characterized in that, comprise mixing arrangement (1), pretreatment unit (11), first paragraph gas separation membrane element (6), second segment gas separation membrane element (7), the 3rd section of gas separation membrane element (9) and post-processing unit (12), described first paragraph gas separation membrane element (6), described second segment gas separation membrane element (7) and described 3rd section of gas separation membrane element (9) are respectively equipped with air inlet, impermeable gas gas outlet and infiltration gas gas outlet; Wherein,
The air inlet of described mixing arrangement (1) is communicated with raw material source of the gas, the gas outlet of described mixing arrangement (1) is communicated with the air inlet of pretreatment unit (11), and the gas outlet of described pretreatment unit (11) is communicated with the air inlet of first paragraph gas separation membrane element (6);
The impermeable gas gas outlet of described first paragraph gas separation membrane element (6) is communicated with the air inlet of described second segment gas separation membrane element (7), after the infiltration gas of described first paragraph gas separation membrane element (6) mixes with the infiltration gas of described second segment gas separation membrane element (7), be communicated with by the air inlet of post-processing unit (12) with described 3rd section of gas separation membrane element (9), the impermeable gas gas outlet of described 3rd section of gas separation membrane element (9) flows to the air inlet of described mixing arrangement (1) by back of pipeline, the impermeable gas gas outlet of described second segment gas separation membrane element (7) and tail gas gas outlet, the infiltration gas gas outlet of described 3rd section of gas separation membrane element (9) and product gas port.
2. utilization gas separation membrane according to claim 1 carries out the apparatus system of purifying, it is characterized in that, described pretreatment unit (11) comprises compression set (2) successively, filter (3), drying device (4) and heater (5), the air inlet of described compression set (2) and the air inlet of pretreatment unit (11), the gas outlet of described heater (5) and the gas outlet of pretreatment unit (11), the gas outlet of described compression set (2) is communicated with described filter (3) air inlet, described filter (3) gas outlet is communicated with described drying device (4) air inlet, described drying device (4) gas outlet is communicated with the air inlet of described heater (5).
3. utilization gas separation membrane according to claim 1 carries out the apparatus system of purifying, and it is characterized in that, described post-processing unit (12) comprises mixed flow tank (8), not containing compression set.
4. utilization gas separation membrane according to claim 1 carries out the apparatus system of purifying, it is characterized in that, the pipeline that the impermeable gas gas outlet of described 3rd section of gas separation membrane element (9) is communicated with described pretreatment unit (11) air inlet is provided with Back pressure control valve (10).
5. utilization gas separation membrane according to claim 1 carries out the apparatus system of purifying, it is characterized in that, described first paragraph gas separation membrane element (6), second segment gas separation membrane element (7) and the 3rd section of gas separation membrane element (9) comprise one or more gas separation membrane module that is in parallel or that be connected in series respectively.
6. utilization gas separation membrane according to claim 1 carries out the apparatus system of purifying, and it is characterized in that, described apparatus system can be applied to the purification of helium or hydrogen or carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060464.1U CN204447689U (en) | 2015-01-28 | 2015-01-28 | Gas separation membrane is used to carry out the apparatus system of purifying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520060464.1U CN204447689U (en) | 2015-01-28 | 2015-01-28 | Gas separation membrane is used to carry out the apparatus system of purifying |
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| CN204447689U true CN204447689U (en) | 2015-07-08 |
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| CN201520060464.1U Withdrawn - After Issue CN204447689U (en) | 2015-01-28 | 2015-01-28 | Gas separation membrane is used to carry out the apparatus system of purifying |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006264A (en) * | 2015-07-15 | 2015-10-28 | 清华大学 | High temperature gas-cooled reactor helium purification regeneration system and regeneration method |
| CN104587804B (en) * | 2015-01-28 | 2016-08-17 | 甘焱生 | Gas separation membrane is used to carry out the apparatus system purified |
| WO2020044992A1 (en) * | 2018-08-28 | 2020-03-05 | 日立造船株式会社 | Gas separation system and gas separation method |
-
2015
- 2015-01-28 CN CN201520060464.1U patent/CN204447689U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587804B (en) * | 2015-01-28 | 2016-08-17 | 甘焱生 | Gas separation membrane is used to carry out the apparatus system purified |
| CN105006264A (en) * | 2015-07-15 | 2015-10-28 | 清华大学 | High temperature gas-cooled reactor helium purification regeneration system and regeneration method |
| WO2020044992A1 (en) * | 2018-08-28 | 2020-03-05 | 日立造船株式会社 | Gas separation system and gas separation method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |