CN2448438Y - Improved double-tower pressure-changing adsorption oxygen generator - Google Patents
Improved double-tower pressure-changing adsorption oxygen generator Download PDFInfo
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- CN2448438Y CN2448438Y CN 00218588 CN00218588U CN2448438Y CN 2448438 Y CN2448438 Y CN 2448438Y CN 00218588 CN00218588 CN 00218588 CN 00218588 U CN00218588 U CN 00218588U CN 2448438 Y CN2448438 Y CN 2448438Y
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Abstract
The utility model relates to a pressure changing adsorption gas separator which comprises two adsorption towers filled with nitrogen adsorption agents, and a product gas storage tank. The utility model is characterized in that the pressure changing adsorption gas separator also comprises a buffer tank used for storing and turning over purgative gas which has a concentration a little lower than the concentration of product gas and is used for regenerating the adsorption agents in the towers. The purgative gas in the buffer tank comes from part of product gas with high concentration which needs regeneration after the pressure equalization of the two towers and is positioned at the outlet ends of the towers. The utility model has the advantages that the switching time and sequence of each control valve, and the size and the damping pressure of the buffer tank are reasonably designed, and the compared with a conventional double-tower adsorption device, higher recovery rate and concentration of product gas can be obtained.
Description
The utility model relates to pressure swing adsorption gas separation device.
Pressure swing adsorption is a kind of integrated technology that has developed more than 30 year.The representative instance of this technology is as follows: four tower apparatus such as patent CN1031660A (pressure swing adsorption control method and equipment), CN1061578A (plateau oxygen making machine); Three tower apparatus such as CN1128979A (adopting the oxygen generating method of pressure swing adsorption method); Double tower device such as U.S. Pat 3944627 and US4263018, CN2290591Y etc.
The above multitower device of three towers has several common characteristic: the first, and the oxygen rich gas of the saturated adsorption tower port of export after all pressing is used to substitute products gas, another tower is purged and cleans, thereby oxygen recovery rate is higher.Double tower device to routine does not then have this process.The circulation timei of second every tower work is longer, thereby the utilization rate of adsorbent is lower.The 3rd structure is complicated, and cost is higher.
U.S. Pat 4263018 has been made the improvement (see figure 2) by introducing an auxiliary adsorption tower to the double tower device of routine.In the auxiliary adsorption tower adsorbent and water conservancy diversion flap are housed, its effect is effectively to deposit equal pressure gas stream, and its course of work is as follows: when the absorption of A tower when saturated, the equalizing valve conducting of A tower, the equalizing valve of B tower is closed, the oxygen in the A tower flows into auxiliary absorber.High-concentration oxygen is in the auxiliary absorber bottom, and low concentration oxygen is on auxiliary absorber top, and after two pressure tower equilibriums, A tower equalizing valve is closed, and enters the desorption and regeneration state, the equalizing valve conducting of B tower.This moment, auxiliary absorber oxygen flowed into the good adsorption tower B of regeneration, when the oxygen pressure in the auxiliary adsorption tower reaches equilibrium state, B tower equalizing valve is closed, the B tower is switched to the adsorption oxygen-preparation state, flowing out from the B tower this moment has sub-fraction by minute gas outlet of inflow A tower in the product oxygen, as regeneration gas, be used for molecular sieve in the A tower of desorption and regeneration is purged, therefore auxiliary adsorption tower is just deposited and is all calmed the anger, can not be as the purgative gas of regenerator.
The purpose of this utility model aims to provide a kind of energy and obtains oxygen recovery rate and the oxygen concentration higher than conventional double tower adsorbent equipment, the same with the multitower device, make oxygenerator with the double tower transformation absorption that a part of oxygen rich gas substitute products gas purges and cleans.
The utility model is to realize like this, double tower transformation absorption system oxygenerator comprises two adsorption towers that the nitrogen adsorption agent is housed, product gas air accumulator, it is characterized in that: also have one to be used for storing and to have enough to meet the need, as surge tank with the purgative gas of the adsorbent reactivation in the tower than the low slightly gas of product gas concentration.Purgative gas in the surge tank after all pressing from two towers, needs a part of high concentration product gas of the port of export of the tower of regeneration.
The utility model has the advantages that: reasonably design the switching time and the order of each control valve, the size of surge tank and compensator or trimmer pressure can obtain product gas recovery rate and the product gas concentration higher than conventional double tower adsorbent equipment.
The following drawings and embodiment will be described further technical characterictic of the present utility model:
Fig. 1 is a kind of structural representation of improved double tower transformation absorption system oxygenerator.
Fig. 2 is United States Patent (USP) 42630183 double tower adsorption oxygen-preparation apparatus structure schematic diagrames.
A.......... adsorption tower
B.......... adsorption tower
C.......... auxiliary adsorption tower
1, the 2...... adsorption tower
V1-V9...... control valve
3.......... product gas air accumulator
4.......... surge tank
5.......... muffler
Embodiment:
As shown in Figure 1, double tower transformation absorption system oxygenerator comprises two adsorption towers 1,2 that the nitrogen adsorption agent is housed, product gas air accumulator 3, also has a surge tank 4 that is used for storing and having enough to meet the need the purgative gas lower slightly than product gas concentration, purgative gas in jar is used for nitrogen absorber in the purge column 1,2 makes the purgative gas of its denitrogenation regeneration, after all pressing from two towers, need a part of high concentration product gas of the port of export of the tower of regeneration.Use operation principle of the present utility model as follows: air is compressed to the pressure of 0.3MPA, imports adsorption tower 1 by the V1 valve, and nitrogen is under pressure by preferential adsorption, and oxygen passes tower 1 adsorbent, enters product gas air accumulator 3 by the port of export by the V7 valve.When the adsorbents adsorb in the tower 1 when saturated, the conducting of V9 valve is all pressed, the oxygen of a part of high concentration enters tower 2, and tower 2 is boosted.V9 cut off when the oxygen concentration in outflow in the tower 1 is all calmed the anger reduced, and this moment, V7 also closed, and the conducting of V5 valve makes the oxygen rich gas that a part of concentration is lower in the tower 1 enter surge tank C.V2 valve conducting subsequently, waste gas in the tower 1 is discharged by muffler 5, when the molecular sieve in the tower 1 is in the desorption and regeneration state, oxygen rich gas in the surge tank 3 under pressure at this moment, enter from tower 1 port of export by the V5 valve, wherein adsorbent is purged and cleans, and this moment, tower 2 began to adsorb nitrogen and system oxygen.
The utility model is to describe as embodiment with oxygenerator, but the design of its technical scheme also is applicable to the gas isolation and purification of other type.
Claims (2)
1, a kind of improved double tower pressure swing adsorption oxygen making device comprises two adsorption towers that the nitrogen adsorption agent is housed, product gas air accumulator, it is characterized in that: also have one be used for storing and have enough to meet the need lower slightly than product gas concentration, as surge tank with the purgative gas of the adsorbent reactivation in the tower.
2, improved double tower pressure swing adsorption oxygen making device according to claim 1 is characterized in that: the purgative gas in the surge tank after all pressing from two towers, needs a part of high concentration product gas of the port of export of the tower of regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218588 CN2448438Y (en) | 2000-07-27 | 2000-07-27 | Improved double-tower pressure-changing adsorption oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218588 CN2448438Y (en) | 2000-07-27 | 2000-07-27 | Improved double-tower pressure-changing adsorption oxygen generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448438Y true CN2448438Y (en) | 2001-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00218588 Expired - Fee Related CN2448438Y (en) | 2000-07-27 | 2000-07-27 | Improved double-tower pressure-changing adsorption oxygen generator |
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| CN (1) | CN2448438Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635722A (en) * | 2012-04-20 | 2012-08-15 | 杭州正高气体科技有限公司 | Valve on-and-off time sequence control for dual-tower adsorption nitrogen making machine |
| CN104633245A (en) * | 2013-11-14 | 2015-05-20 | 成都振中电气有限公司 | Pressure equalizing bevel angle valve structure of nitrogen-making device |
| CN106698357A (en) * | 2016-12-28 | 2017-05-24 | 北京金大万翔环保科技有限公司 | Device and method for preparing oxygen through three-tower low pressure adsorption and vacuum desorption |
| CN107188176A (en) * | 2017-07-20 | 2017-09-22 | 绿菱电子材料（天津）有限公司 | Carbon monoxide production technology |
| CN108031240A (en) * | 2017-12-18 | 2018-05-15 | 洛阳健阳科技有限公司 | A kind of device based on HEU type zeolite molecular sieve separation of methane and nitrogen |
| CN110559799A (en) * | 2019-06-27 | 2019-12-13 | 杨皓 | Improved pressure swing adsorption reverse air discharge, scavenging gas, forward air discharge and air pumping recovery process |
-
2000
- 2000-07-27 CN CN 00218588 patent/CN2448438Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635722A (en) * | 2012-04-20 | 2012-08-15 | 杭州正高气体科技有限公司 | Valve on-and-off time sequence control for dual-tower adsorption nitrogen making machine |
| CN102635722B (en) * | 2012-04-20 | 2013-09-04 | 杭州正高气体科技有限公司 | Valve on-and-off time sequence control for dual-tower adsorption nitrogen making machine |
| CN104633245A (en) * | 2013-11-14 | 2015-05-20 | 成都振中电气有限公司 | Pressure equalizing bevel angle valve structure of nitrogen-making device |
| CN106698357A (en) * | 2016-12-28 | 2017-05-24 | 北京金大万翔环保科技有限公司 | Device and method for preparing oxygen through three-tower low pressure adsorption and vacuum desorption |
| CN107188176A (en) * | 2017-07-20 | 2017-09-22 | 绿菱电子材料（天津）有限公司 | Carbon monoxide production technology |
| CN108031240A (en) * | 2017-12-18 | 2018-05-15 | 洛阳健阳科技有限公司 | A kind of device based on HEU type zeolite molecular sieve separation of methane and nitrogen |
| CN110559799A (en) * | 2019-06-27 | 2019-12-13 | 杨皓 | Improved pressure swing adsorption reverse air discharge, scavenging gas, forward air discharge and air pumping recovery process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |