CN101229469A - Secondary adsorption and pressure-swing adsorption air separation system - Google Patents
Secondary adsorption and pressure-swing adsorption air separation system Download PDFInfo
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- CN101229469A CN101229469A CNA200710134475XA CN200710134475A CN101229469A CN 101229469 A CN101229469 A CN 101229469A CN A200710134475X A CNA200710134475X A CN A200710134475XA CN 200710134475 A CN200710134475 A CN 200710134475A CN 101229469 A CN101229469 A CN 101229469A
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- storage tank
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Abstract
The invention relates to an air separation system of pressure swing adsorption by secondary adsorption. The air separation system of pressure swing adsorption can further enhance the purity of purified air in a gas storage tank; the technical proposal is that the separation system of pressure swing adsorption of secondary adsorption comprises an adsorption tower, an air inlet device arranged at the inlet opening of the adsorption tower via a pipeline, the inlet opening of the adsorption tower is also connected with an atmospheric desorption device; the outlet end of the adsorption tower is connected with an electric control valve and an one-way valve in parallel and is further connected with a separation air storage tank in series, and the outlet of the separation air storage tank is connected with a stop valve; a molecule screen is positioned in the separation air storage tank. The volume of the separation air storage tank is less than or equal to half of the volume of the adsorption tower; moreover, as the molecule screen is arranged in the purified air storage tank, impure air containing in pure oxygen or nitrogen air after one-time adsorption of the adsorption tower is further adsorbed, leading the purity of the pure oxygen or nitrogen air in the adsorption tower to be further enhanced, thus solving the problems that are not effectively solved for a long time.
Description
Technical field
The present invention relates to a kind of pressure-swing adsorption air separation system of second adsorption.
Background technology
Raising along with people's living standard, people are also improving constantly the understanding of ambient air quality importance, air separation, adsorbent equipment is used increasingly extensive, traditional separates gas, the air-seperation system of absorption, only carry out gas absorption one time, desorb, clean gas through absorption is standby in the adsorption tower inflow gas holding vessel, gas purity through once absorption also needs further raising because of various factors sometimes, how further to improve the purity of clean gas in the gas storage tank, be the technical barrier that perplexs the professional and technical personnel for a long time, fail effectively to solve always.
Summary of the invention
Technical problem to be solved by this invention provides a kind of further pressure-swing adsorption air separation system that improves of purity that can make clean gas in the gas storage tank.
Technical scheme of the present invention is a kind of pressure-swing adsorption air separation system that is used for second adsorption, comprise adsorption tower, the air input unit that on the input port of adsorption tower, connects by pipeline, the input port of adsorption tower also is connected with the normal pressure desorption apparatus, the delivery outlet of adsorption tower is connected with electrically-controlled valve and check valve, and electrically-controlled valve and check valve parallel connection are connected in series a divided gas flow holding vessel again, the outlet of divided gas flow holding vessel is connected with stop valve, is provided with molecular sieve in the described divided gas flow storage tank.
The molecular sieve that is provided with in the divided gas flow storage tank is the system oxygen molecular sieve, it also can be system nitrogen molecular sieve, the volume of divided gas flow storage tank is smaller or equal to half of adsorption tower volume, air cleaner, air compressor, condenser, check valve, air tank, the electrically-controlled valve of air input unit for being connected in series successively, the normal pressure desorption apparatus is an electrically-controlled valve.
Beneficial effect: the present invention is by in pressure-swing adsorption air separation system, add molecular sieve in the clean gas holding vessel, pure oxygen that further absorption process adsorption tower once adsorbs or the impure gas in the pure nitrogen gas, make the pure oxygen in the clean gas holding vessel or the purity of pure nitrogen gas obtain further to improve, solved the problem that effectively solved of failing for a long time.
Description of drawings
Fig. 1 is a pressure-swing adsorption air separation system structural representation of the present invention
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing
A kind of air separation and adsorption system that is used for second adsorption shown in Figure 1, comprise air cleaner 1, air compressor 2, condenser 3, check valve 4, air tank 5, the air input unit that electrically-controlled valve 6 is formed by connecting is connected on the input port 12 of adsorption tower 7 by pipeline, the input port 12 of adsorption tower 7 also is connected with normal pressure desorption apparatus 10, the delivery outlet 11 of adsorption tower 7 is parallel with electrically-controlled valve 8 and check valve 9, be connected in series a divided gas flow holding vessel 13 again, the outlet of divided gas flow holding vessel is connected with stop valve 14, be filled with molecular sieve in the described divided gas flow storage tank, described normal pressure desorption apparatus 10 is an electrically-controlled valve.
During native system work, air is through air cleaner 1, flow into air compressor 2, through entering air tank 5 through check valve 4 after condenser 3 coolings, enter adsorption tower 7 absorption from air tank 5 effluent airs through electrically-controlled valve 6, the clean gas of process absorption flows into divided gas flow holding vessels 13 through the outlet 11 and the check valve 9 of adsorption tower 7, electrically-controlled valve 10 is carried out the normal pressure desorb, be filled with system oxygen molecular sieve or system nitrogen molecular sieve in the divided gas flow holding vessel 13, gas is further absorption in holding vessel 13, purity is further enhanced, clean gas through second adsorption discharges by the stop valve 14 that holding vessel 13 exports, and the foreign gas of absorption enters in the adsorption tower 7 by holding vessel 13 inlet and electrically-controlled valve 8 blowbacks of opening, gas emptying with the free space in the adsorption tower, thereby recover the adsorption capacity of molecular sieve, this process enters next do action process after finishing.
Claims (6)
1. the pressure-swing adsorption air separation system of a second adsorption, comprise adsorption tower (7), the air input unit that connects by pipeline is gone up in input port (12) in adsorption tower (7), the input port (12) of adsorption tower (7) also is connected with normal pressure desorption apparatus (10), the delivery outlet (11) of adsorption tower (7) is connected with electrically-controlled valve (8) and check valve (9), be in parallel between electrically-controlled valve (8) and the check valve (9), be connected in series a divided gas flow holding vessel (13) again, the outlet of divided gas flow holding vessel (13) is connected with stop valve (14), it is characterized in that: be provided with molecular sieve in the described divided gas flow storage tank (13).
2. pressure-swing adsorption air separation system according to claim 1 is characterized in that: the molecular sieve that is provided with in the described divided gas flow storage tank (13) is the system oxygen molecular sieve.
3. pressure-swing adsorption air separation system according to claim 1 is characterized in that: the molecular sieve that is provided with in the described divided gas flow storage tank (13) is system nitrogen molecular sieve.
4. pressure-swing adsorption air separation system according to claim 1 is characterized in that: the volume of described divided gas flow storage tank (13) is smaller or equal to half of adsorption tower (7) volume.
5. pressure-swing adsorption air separation system according to claim 1, it is characterized in that: air cleaner (1), air compressor (2), condenser (3), check valve (4), air tank (5), the electrically-controlled valve (6) of described air input unit for being connected in series successively, the output of electrically-controlled valve (6) is connected on the input port (12) of adsorption tower (7).
6. pressure-swing adsorption air separation system according to claim 1 is characterized in that: normal pressure desorption apparatus (10) is an electrically-controlled valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710134475XA CN101229469A (en) | 2007-10-30 | 2007-10-30 | Secondary adsorption and pressure-swing adsorption air separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710134475XA CN101229469A (en) | 2007-10-30 | 2007-10-30 | Secondary adsorption and pressure-swing adsorption air separation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101229469A true CN101229469A (en) | 2008-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710134475XA Pending CN101229469A (en) | 2007-10-30 | 2007-10-30 | Secondary adsorption and pressure-swing adsorption air separation system |
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| Country | Link |
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| CN (1) | CN101229469A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868346A (en) * | 2014-03-17 | 2014-06-18 | 济南市平阴县玛钢厂 | Oxygen-enriched nitrogen supply system for cupola furnace |
| CN108298509A (en) * | 2018-04-11 | 2018-07-20 | 重庆建峰化肥有限公司 | A kind of air separation by PSA nitrogen producing craft device |
| CN113015572A (en) * | 2018-11-19 | 2021-06-22 | 住友精化株式会社 | Gas separation device and gas separation method |
-
2007
- 2007-10-30 CN CNA200710134475XA patent/CN101229469A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868346A (en) * | 2014-03-17 | 2014-06-18 | 济南市平阴县玛钢厂 | Oxygen-enriched nitrogen supply system for cupola furnace |
| CN108298509A (en) * | 2018-04-11 | 2018-07-20 | 重庆建峰化肥有限公司 | A kind of air separation by PSA nitrogen producing craft device |
| CN113015572A (en) * | 2018-11-19 | 2021-06-22 | 住友精化株式会社 | Gas separation device and gas separation method |
| CN113015572B (en) * | 2018-11-19 | 2023-11-21 | 住友精化株式会社 | Gas separation device and gas separation method |
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Open date: 20080730 |