CN203002172U - High-efficiency variable-pressure absorbing device - Google Patents
High-efficiency variable-pressure absorbing device Download PDFInfo
- Publication number
- CN203002172U CN203002172U CN201220525247.1U CN201220525247U CN203002172U CN 203002172 U CN203002172 U CN 203002172U CN 201220525247 U CN201220525247 U CN 201220525247U CN 203002172 U CN203002172 U CN 203002172U
- Authority
- CN
- China
- Prior art keywords
- valve
- stage
- tower
- pipeline
- purity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to a high-efficiency variable-pressure absorbing device. The high-efficiency variable-pressure absorbing device is characterized in that two towers or more towers full of molecular sieve absorbing agents are connected in a single-stage or multiple-stage series manner; in each stage, for example, the upper parts of the tower A and the tower B are connected by a valve group consisting of valves (V6-V10), the lower parts of the tower A and the tower B are connected by a valve group consisting of valves (V1-V5), and the upper valve group and the lower valve group are communicated with the valve V9, the valve V10, the valve V2 and the valve V3 by a pipeline (2) so as to realize the pressure equalizing process from the top of the tower (A) to the bottom of the tower (B); a medium-purity storage tank (G1), an air flow ejector (J1), a valve V21, a valve V22 and a tail gas recovering system are arranged between the front stage and the rear stage which are connected in series; the valve V21 and the valve V22 are connected with the medium-purity storage tank (G1) and the air flow ejector (J1); the tail-gas recovering system consists of a one-way valve DV1; and the single-stage and more-stage high-efficiency variable-pressure absorption system consists of the pipeline and a high-purity gas storage tank (G2). The high-efficiency variable-pressure absorbing device has the advantages that the efficiency of variable-pressure absorption of separated gas can be obviously improved and the purposes of high purity and high efficiency are really achieved.
Description
Technical field
The utility model relates to a kind of efficient pressure-swing absorption apparatus.
Background technology
Making nitrogen by pressure swing adsorption (oxygen) technology obtained applying widely over past ten years, and the characteristics such as its high efficient and flexible are obvious, compare other forms of nitrogen processed (oxygen) advantage day by day to show, technical also had a significant progress.Except molecular sieve performance significantly improved, the structure of nitrogen processed (oxygen) machine and the design of system also were variation.All laminated structure is in the majority up and down but the world, domestic commerce type are still with double tower, and other multi-tower structure and process industry practical application are real belongs to rarely seen.The aim of this patent is to provide a kind of low-carbon (LC), efficient making nitrogen by pressure swing adsorption (oxygen) technology for suitability for industrialized production.
In prior art: the four tower multi-mode nitrogen making machines that CN2887838Y describes, invention aim are the nitrogen of the same purity of variable output, to adapt to the larger operating mode of gas consumption fluctuation, cut the waste.But the consumption to the nitrogen of unit volume does not have the measure of reduction.
The technology that CN201240850Y describes, its aim are that the nitrogen with the certain purity at adsorption tower middle part adsorbs all and presses; Reduce air consumption, reduce energy consumption.Such structure realizes that application is arranged in many commercial plants.
The technology that CN201618494U describes, aim are that the nitrogen with the inadequate emptying of purity is refluxed and recompresses to air source inlet.This situation is generally effective when device start and fault, can save the part energy.
The described mode about four tower nitrogen making machine structure double stage tandems of prior art CN201643939.Yet the discharging nitrogen of second level higher degree does not effectively utilize ways and means, incorporates the air compressor machine entrance into, does not show effect with dashing forward because of divergence loss in air mixed process, and energy-saving effect is not obvious.
The utility model content
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of efficient pressure-swing absorption apparatus, the gas separation equipment high-purity ability that can effectively solve two tower structures commonly used is low, and the problem that the actual gas producing efficiency of the type of four tower structures is low, air consumption is large.
The technical solution adopted in the utility model is: a kind of efficient pressure-swing absorption apparatus, by two towers or the multitower of filling adsorbent of molecular sieve, with double tower multitower single-stage, plural serial stage; Every single-stage, between A tower, B tower, top is by valve V
6～V
10The valve group that forms is connected, and the bottom is by valve V
1～V
5The valve group that forms is connected, between the valve group of up and down by pipeline (2) and valve V
9, V
10, V
2, V
3Be connected, between the two-stage of front and back series connection, be provided with moderate purity storage tank (G
1) and Ejector (J
1) and be attached thereto the valve V that connects
21, V
22, and check valve DV
1The exhaust gas recovery system that forms is connected, by pipeline and high-purity gas storage tank (G
2) and single-stage and the multi-stage, efficient pressure swing adsorption system of composition.
Fill two towers of adsorbent of molecular sieve or the single-stage system that multitower forms, two towers connect up and down valve group by pipeline (2), and three towers or multitower can connect up and down valve group in the same way.
Between the two-stage adsorption element, the emission gases of next stage can be passed through pipeline (9) and valve (V
21) and check valve DV
1, pipeline (14) and inertia recycling can (G
3) again through valve (V
22) reach Ejector (J
1) be communicated with the admission line (3) of upper level, the exhaust gas recovery system that forms thus can adopt the same manner that adjacent two-stage between multistage is connected, or across the connection between level, the Ejector (J in exhaust gas recovery system
1) can be air driven pump or the air pump of electronic liquid and motor driving.
The beneficial effects of the utility model: the utility model can significantly improve product nitrogen (oxygen) ability of molecular sieve and effectively reduce compressed-air actuated consumption, and the empty nitrogen ratio of namely often saying in the industry can energy efficiency more than 30%.The nitrogen that the pressure-variable adsorption of application this patent (being called for short PSA) is directly produced purity 99.9%～99.999% becomes practical, reduces the use of the complicated purification styles such as hydrogenation and carbon deoxidation, has reduced investment and operating cost.
Description of drawings
Fig. 1 is the structural representation that the utility model adopts a kind of embodiment of double tower single-stage series connection;
Fig. 2 is the structural representation of traditional adsorbent equipment;
Fig. 3 is the structural representation that the utility model adopts a kind of embodiment of double tower plural serial stage;
Fig. 4 is the structural representation that the utility model adopts the another kind of embodiment of double tower plural serial stage;
Fig. 5 is the structural representation that the utility model adopts a kind of embodiment of multitower single-stage series connection.
The specific embodiment
The utility model comprises: in the adsorption tower of carbon molecular sieve is housed, its special character is the total A tower of above-mentioned adsorption tower, B tower, C tower, D tower, as Fig. 3.
Wherein: A tower, B tower are prime, in the nitrogen storage gas tank G of a moderate purity is arranged
1, C tower, D tower are rear class, after a nitrogen storage tank G is arranged
2, according to the requirement of user to gas purity, even can increase again backward in this way a pair of or multitower more, in order to improve air feed purity.
Be provided with conduit pipe pneumatically valve V at A tower and B tower bottom
1, V
2, V
3, V
4, V
5, V
22With connecting pipe 1,2,3,8, at conduit pipe pneumatically valve V
1The J that is connected by pipeline 3 afterwards
1An Ejector (or air pump of drive).
Be provided with conduit pipe pneumatically valve V at A tower and B tower top
6, V
7, V
8, V
9, V
10, hand-operated valve SV
1With connecting pipe 4,5,6.What pipeline 6 and moderate purity nitrogen buffer tank had formed this patent separates the prime parts, and this prime is also a complete PSA Gas piece-rate system of cover, also has the characteristics efficient and more energy-conservation than traditional separating technology.
Below to separating the explanation of prime parts: as Fig. 1
When prime parts list cover uses, J can be installed
1Ejector.
Except V
9, V
10Be the pressure-variable adsorption separating technology system of prior art beyond pipeline 2, one of outstanding feature in this patent is exactly to be to have set up valve V in traditional piece-rate system
9, V
10With pipeline 2, changed traditional flow separation flow process.
It is to realize like this separation process of oxygen nitrogen:
A tower when work: the compressed air valve V that flows through
1, pipeline 3,2, valve V
2With A tower, valve V
6, pipeline 5, valve V
8, pipeline 6, enter nitrogen (oxygen) gas air accumulator G
1Due to the suction-operated of the molecular sieve that fills up in the A tower, with oxygen O
2(or nitrogen N
2) be adsorbed in the internal capillary of molecular sieve body the nitrogen N of certain purity
2(or oxygen O
2) be able to by and in nitrogen N
2(or oxygen O
2) collected in air accumulator.And B tower bottom is through V
5Connect with muffler X1 with pipeline 1, belong to emptying, regenerative process.When working time of A tower or adsorption capacity reach preset value, certain density non-collection gas composition (oxygen O
2Or nitrogen N
2) when not penetrating the molecular sieve bed with regard to termination work, enter a flow process section, namely all press.
The pressure equalizing of the art of this patent is achieved in that opens valve V
9, V
3, V
6, V
7, realize that the gases at high pressure of A tower are through V
6, V
7Flow into the B top of tower by the top; Through V
9, V
3Flow into B tower bottom, like this can be fully rich nitrogen (oxygen) gas on A tower top be all entered the B tower, prevent that non-purification oxygen (nitrogen) gas of bottom from entering the B tower.Improve like this separative efficiency, saved source of the gas.Enter next flow process after all pressing, i.e. B tower work, symmetrical with A tower flow process.Oxygen enrichment (nitrogen) gas of A tower is through valve V at this moment
4Enter muffler X1 emptying with pipeline 1, regenerated like this.
Next flow process section: the B tower is all pressed also to the A tower and is all pressed the genus symmetric process with above-mentioned A tower to the B tower.
The described multitower single-stage of the art of this patent scheme can be three towers and even multitower mode, its version is as shown in Figure 5: all have No. 2 pipes with this patent feature that up and down valve group is communicated with between two towers that adjoin, realize the pressure equalizing from top to bottom between every two towers.
The described two tower single-stage modes of this patent can obtain further instruction in " embodiment one ".
The described second level of the art of this patent scheme piece-rate system comprises: adsorption tower C tower, the D tower of in-built full molecular sieve (or the zeolite molecular sieve in other oxygenerator).
Be provided with conduit pipe pneumatically valve V in C tower, D tower bottom
11, V
12, V
13, V
14, V
15, V
21With connecting pipe 7,9,10.
The check valve DV that pipeline 9 is connected
1Again by pipeline 14 and inertia tank G
3Connect, then by pipeline 8 and valve V
22And pipeline 15 enters Ejector.
On C tower, D tower top, be provided with valve V
16, V
17, V
18, V
19, V
20And manual modulation valve SV
2With connecting pipe 11,12,13.
Top and the bottom valve group is communicated with by pipeline 10, and pipeline 10 is with V
19, V
20, V
11, V
12, V
13Be communicated with, then by pipeline 13 and nitrogen (oxygen) gas storage tank G
3Be communicated with.
The second level in the described technical characterictic of this patent is except valve V
21, V
22And DV
1, tank G
3Outside part operational process and prime substantially identical, nitrogen (oxygen) gas of the medium purity that prime is purified through the second level after alternately absorption is purified purity significantly improve.
The efficient energy-saving measure of its art of this patent scheme is that the second level adopted pipeline 10 to be communicated with up and down, is achieved C tower, D top of tower to fully all the pressing of the other side bottom, thereby effectively utilizes the gas of purifying, raises the efficiency.
The efficient energy-saving measure of its art of this patent scheme also is to be provided with between the first order and the second level valve V
21, V
22And check valve DV
1With inertia tank G
2And the pipeline 9,8,14 that is attached thereto, 15 and Ejector J
1, its course of work is following realization.
Second level purification separating component is to purify as source of the gas carries out the degree of depth take purer nitrogen (oxygen) gas of previous stage, so it is through valve V
14, V
15In the tail gas of discharging, nitrogen (oxygen) gas purity also can be higher than the air of compression.Therefore, by the recovery that will major part wherein be used of this system, be also one of effective measures of energy efficiency.
When C tower (or D tower) through valve V
14, V
15When the gas of middle pressure (residual air after adsorption tower is all pressed) is discharged regeneration, valve V
21First be in off state 5～6 seconds, gas at this moment is by check valve DV
1Enter inertia storage tank G
3, realize that half or more emission gases is by G
3Collect, the residual air in C tower (or D tower) is through valve V subsequently
21Open discharging, at this moment G
3Following check valve DV
1Blocked G
3The refluence of middle collection gas.
When A tower (or B tower) when work is boosted in air inlet, about 58 seconds cycles, valve V in the time of front 5 seconds
22Open, due to air inlet source high pressure, the A tower (or B tower) of this moment is in low pressure (gauge pressure zero-pressure position), therefore through valve V
1The compressed air of the high flow rate Ejector J that flows through
1Produce higher negative pressure, with inertia storage tank G
3In nitrogen (oxygen) aspiration of the certain purity air-flow that enters to boost is arranged, enter A tower (or B tower), valve V
22The random shutoff, (J
1Can be also the gas compression pump of drive, with G
3In the gas inject pipeline.) like this because the absorption purification cycle of prime and the second level is identical, and each inertia storage tank G
3Gas all can be through being utilized by " filling " to " extraction " so periodic circulation, so greatly improved the efficient of the highly purified gas of two-stage series connection.
Second level separating-purifying parts take previous stage than purity nitrogen (oxygen) gas as source of the gas carry out series system that the degree of depth purifies also the mode shown in (Fig. 4) realize; To have saved inertia tank G with aforementioned difference
3With parts such as Ejectors.Keep check valve DV
1With sequencing valve V
22In any one.Residual air after rear class (second level) all being pressed before previous stage A, B tower are all pressed by programming in C, D tower is partly filled in the adsorption tower (A, B) of previous stage.The gas component that (because in rear class discharging gas) is purified is relatively higher than concentration of component in all calming the anger of previous stage or atmosphere) then previous stage A, B tower are all pressed again.The component that is purified of like this rear class being discharged a large amount of higher degrees in gas is used, and has reduced the discharge capacity that is purified component concerning whole system, has greatly improved efficient, reduces energy consumption, and aforesaid way can obtain further instruction in embodiment two.
Embodiment one:
Fill up A, B two towers of molecular sieve, be of a size of inner diameter D=65mm, long L=1000mm, tower dress molecular sieve carbon total amount 4.17Kg, the direct-acting electromagnetic valve of valve 1/4 * D2, pipeline ￠ 8 * 1 are the inferior bassoon of latus rectum D=6mm.
With lower equal baric flow journey traditionally shown in Figure 2:
The aerogenesis time: 60 seconds
All press: V
6, V
7Upper logical
V
2, V
3Lead to down 2 seconds simultaneously time
Adsorptive pressure 0.68MPa, when producing the nitrogen of purity 99.5%, output is 0.5Nm
3/ h.Carry out work by the system shown in Figure 1 mode in the art of this patent scheme:
The aerogenesis time: 60 seconds
A → B all presses: V
6, V
7, A, B connects at the top, 0.7 second time
V
9, V
3, A connects at the bottom of B on the top, 2 seconds time
B → A all presses: V
6, V
7, A, B connects at the top, 0.7 second time
V
10, V
2, B connects at the bottom of A on the top, 2 seconds time
Adsorptive pressure 0.68MPa, when producing the nitrogen of purity 99.5%, output is 0.8Nm
3/ h.
By embodiment one as seen, when supply gas pressure, discarded discharge capacity and adsorption cycle were identical, prime separating component scheme fecund of the present utility model went out: 0.8-0.5=0.3Nm
3The same purity nitrogen gas of/h.Namely improve 0.3/0.8 * 100%=37.5%.
Embodiment two:
Fill up A, B two towers of molecular sieve, be of a size of inner diameter D=65mm, long L=1000mm, tower dress molecular sieve carbon total amount 4.17Kg, the direct-acting electromagnetic valve of valve 1/4 * D2, pipeline ￠ 8 * 1 are the inferior bassoon of latus rectum D=6mm.
Fill up C, D two towers of molecular sieve, be of a size of inner diameter D=80mm, long L=1200mm, tower dress molecular sieve carbon total amount 7.6Kg, the direct-acting electromagnetic valve of valve 1/4 * D2, pipeline ￠ 10 * 1 are the inferior bassoon of latus rectum D=8mm.
Same by lower equal baric flow journey traditionally shown in Figure 2, with inner diameter D=65mm, the A of long L=1000mm, B two towers drop into experiment:
The aerogenesis time: 60 seconds
All press: V
6, V
7Upper logical
V
2, V
3Lead to down 2 seconds simultaneously time
Adsorptive pressure 0.68MPa, when producing the nitrogen of purity 99.99%, nitrogen output is 0.28Nm
3/ h, specific air consumption is 2.24Nm
3/ h.
Also use C, D two towers traditional two tower modes (Fig. 2) to drop into experiment, nitrogen output is 0.53Nm
3/ h, specific air consumption is 4.18Nm
3/ h.
By the system shown in Figure 4 mode of the art of this patent scheme, with four tower series connection operations simultaneously, the front and back stages cycle of operation: 2 * 62.7 seconds.
Program process when program control:
Adsorptive pressure 0.68MPa, when producing the nitrogen of purity 99.99%, nitrogen output is 1.15Nm
3/ h, specific air consumption is 5.7Nm
3/ h.
Go out by the present embodiment two also fecund: 1.15-(0.28+0.53)=0.34Nm
3The same purity nitrogen gas of/h.Namely improve 0.34/1.15 * 100%=29%.
Pressing the present embodiment two air consumptions reduces: (4.18+2.24)-5.7=0.72Nm
3/ h.
Claims (3)
1. an efficient pressure-swing absorption apparatus, is characterized in that: by two towers or the multitower of filling adsorbent of molecular sieve, with double tower multitower single-stage, plural serial stage; Every single-stage, between A tower, B tower, top is by valve V
6～V
10The valve group that forms is connected, and the bottom is by valve V
1～V
5The valve group that forms is connected, between the valve group of up and down by pipeline (2) and valve V
9, V
10, V
2, V
3Be connected, between the two-stage of front and back series connection, be provided with moderate purity storage tank (G
1) and Ejector (J
1) and be attached thereto the valve V that connects
21, V
22, and check valve DV
1The exhaust gas recovery system that forms is connected, by pipeline and high-purity gas storage tank (G
2) and single-stage and the multi-stage, efficient pressure swing adsorption system of composition.
2. efficient pressure-swing absorption apparatus according to claim 1, it is characterized in that filling two towers of adsorbent of molecular sieve or the single-stage system that multitower forms, two towers connect up and down valve group by pipeline (2), and three towers or multitower connect up and down valve group in the same way.
3. efficient pressure-swing absorption apparatus according to claim 1 is further characterized in that: between the two-stage adsorption element, the emission gases of next stage is by pipeline (9) and valve (V
21) and check valve DV
1, pipeline (14) and inertia recycling can (G
3) again through valve (V
22) reach Ejector (J
1) be communicated with the admission line (3) of upper level, the exhaust gas recovery system that forms thus adopts the same manner that adjacent two-stage between multistage is connected, or across the connection between level, the Ejector (J in exhaust gas recovery system
1) be air driven pump or the air pump of electronic liquid and motor driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220525247.1U CN203002172U (en) | 2012-10-15 | 2012-10-15 | High-efficiency variable-pressure absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220525247.1U CN203002172U (en) | 2012-10-15 | 2012-10-15 | High-efficiency variable-pressure absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203002172U true CN203002172U (en) | 2013-06-19 |
Family
ID=48593810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220525247.1U Expired - Fee Related CN203002172U (en) | 2012-10-15 | 2012-10-15 | High-efficiency variable-pressure absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203002172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768891A (en) * | 2014-02-17 | 2014-05-07 | 上海穗杉实业有限公司 | Two-stage series-connection pressure-swing-adsorption oxygen generation system capable of improving oxygen recovery rate and operation method of system |
-
2012
- 2012-10-15 CN CN201220525247.1U patent/CN203002172U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768891A (en) * | 2014-02-17 | 2014-05-07 | 上海穗杉实业有限公司 | Two-stage series-connection pressure-swing-adsorption oxygen generation system capable of improving oxygen recovery rate and operation method of system |
| CN103768891B (en) * | 2014-02-17 | 2015-11-18 | 上海穗杉实业有限公司 | A kind of two-stage series connection swing adsorption oxygen generating system and method for operating thereof that can improve oxygen recovery rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104058371B (en) | Pressure-variable adsorption gas system processed and method thereof | |
| CN104815521B (en) | Ternary component pressure swing absorption separation method based on eight tower parallel connection | |
| CN101108295B (en) | Method of removing CO2 from switch gas by pressure swing adsorption with replacing and recycling step | |
| JP5184885B2 (en) | Production method of oxygen by three-stage transformer adsorption device | |
| CN102674249A (en) | One-stage hydrogen separating and purifying method based on pressure swing adsorption membrane and device for realizing same | |
| CN201263957Y (en) | Middle-top pressure equalizing high-purity nitrogen PSA series nitrogen production system according to concentration gradient | |
| CN100363087C (en) | Minisize pressure-swinging adsorption oxygen-making device with equalizing two end of adsorption device | |
| CN204310818U (en) | Swing adsorption nitrogen producing apparatus | |
| JP6163238B2 (en) | Method for separating and obtaining oxygen from air by adsorption separation and apparatus therefor | |
| CN102500190B (en) | A kind of cleaning and recovering process for enriched gas source | |
| CN203002172U (en) | High-efficiency variable-pressure absorbing device | |
| CN2875568Y (en) | Pressure change adsorption gas separation device | |
| CN104128073B (en) | Saturation adsorption process of pressure swing adsorption decarburization and device thereof | |
| CN102380285B (en) | Multi-tower vacuum pressure swing adsorption based method and apparatus for concentrating coal mine ventilation air methane | |
| CN201850137U (en) | Molecular sieve pressure-swing-adsorption oxygen generator with double oxygen storage tanks | |
| CN201988309U (en) | Methanol purge gas treatment system | |
| RU196293U1 (en) | PORTABLE MEMBRANE-ADSORBONIC OXYGEN CONCENTRATOR | |
| CN2889461Y (en) | Three-tower variable-pressure gas adsorbing separator | |
| CN103223288A (en) | Pressure swing adsorption decarbonization device and process | |
| CN209438318U (en) | A kind of pressure swing adsorption system with Pneumatic booster device | |
| CN201578970U (en) | Transformation adsorption device in secondary reflow process | |
| CN112354325A (en) | Laboratory is with adsorption tower series-parallel connection with nitrogen gas preparation system | |
| CN208512200U (en) | It is a kind of based on product gas methane displacement coal bed gas deoxidation denitrogenate enrichment facility | |
| CN211896036U (en) | Oxygen purification equipment | |
| CN106256409B (en) | A kind of pressure swing adsorption system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20211015 |