CN1142814C - Variable pressure gas adsorbing separator - Google Patents
Variable pressure gas adsorbing separator Download PDFInfo
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- CN1142814C CN1142814C CNB991016513A CN99101651A CN1142814C CN 1142814 C CN1142814 C CN 1142814C CN B991016513 A CNB991016513 A CN B991016513A CN 99101651 A CN99101651 A CN 99101651A CN 1142814 C CN1142814 C CN 1142814C
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Abstract
The present invention relates to a device using fixed adsorbents to adsorb and separate mixed gas in a pressure changing mode. The device comprises at least two packing towers, a gas inlet pipe, a gas outlet pipe, a gas discharging pipe, and an upper pressure equalizing pipe and a lower pressure equalizing pipe. The device is characterized in that two stair-shaped pressure equalizing pipes are also arranged between two packing towers or two rows of packing towers, one end of each of the stair-shaped pressure equalizing pipes is communicated with a gas intake port, and the other end is communicated with a mixed gas inlet of the other packing tower or the other row of packing towers. The device can directly prepare product gas with high purity and can reach a ppm level; the device has the advantages of low energy consumption and high adsorbent utilization rate; and the device can be used for preparing and separating gases with high purity and is particularly suitable for separating and preparing nitrogen or oxygen in the air.
Description
One, technical field
The present invention relates to a kind ofly carry out the equipment of transformation adsorbing separation mist, relate to a kind of technology that adopts transformation absorption principle separating mixed gas with the fixed absorbent bed.
Two, background technology
Carry out the equipment of transformation adsorbing separation mist with the fixed absorbent bed, its the most frequently used structural shape is: the packed tower that adopts two groups of parallel waies to arrange, filled with adsorbent in the packed tower, between packed tower by air inlet pipeline, gas exhaust piping, outlet pipe and up and down the balance pipe road connect.Its operation principle is: when a packed tower was in the absorption aerogenesis, the another packed tower was in desorption and regeneration, and so alternate cycles separates generating product gas continuously.
The gas fractionation unit of said structure pattern is because in the upper and lower pressure equalizing, and the adsorption density height of the body of all calming the anger has down strengthened the moment adsorbance of adsorbent, this moment adsorbance directly have influence on the effective adsorbance of adsorbent in the absorption gas generation process.The shortcoming of this class gas fractionation unit is:
1), the adsorbent utilization rate is low, the factor of created gase of unit mass adsorbent is low;
2), the rate of recovery is low, energy consumption is high;
3), only be applicable to that purity is lower than 99.9% application, owing to the cost height, the operating cost height does not have practical value for high-purity equipment.
Three, content of the present invention
Content of the present invention: provide on a kind of basis of the gas fractionation unit in the said structure pattern, simple two-way or the multichannel ladder balance pipe road of increasing, just can directly produce high-purity and can reach the product gas of ppm level, and energy consumption is low, the factor of created gase height of unit mass adsorbent, product gas recovery rate height and the high pressure swing adsorption gas separation device of adsorbent utilization rate.
Four, formation of the present invention and feature (description of drawings)
Formation of the present invention such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4:
Fig. 1 is a kind of two tower structure example structure schematic diagrames of the present invention.
Fig. 2 is a kind of four tower structure example structure schematic diagrames of the present invention.
Fig. 3 is the adsorption layer distribution schematic diagram of adsorbent in the packed tower of two tower structure embodiment of the present invention.
Fig. 4 is the adsorption layer distribution schematic diagram of adsorbent in the row packed tower of four tower structure embodiment of the present invention.
Composition of the present invention by two or two row packed towers (7), air inlet pipeline (1), outlet pipe (9), gas exhaust piping (2), go up balance pipe road (8), balance pipe road (3), ladder balance pipe road (4) constitute down, be filled with the adsorbent (6) that can adsorb a certain component gas in the mist in the packed tower, the connection by above-mentioned pipeline of two packed towers is parallel form and arranges, two row packed towers then are two row in parallel, and every row packed tower is composed in series by series pipe (5) by two above packed towers of equal number.The connected mode of each pipeline is as follows:
1), an end of air inlet pipeline (1) is communicated with the mixed gas inlet (12) of two or two row packed towers respectively and by-pass valve control (10) is set respectively, the other end is communicated with ancillary equipment;
2), an end of gas exhaust piping (2) is communicated with the mixed gas inlet (12) of two or two row packed towers respectively and by-pass valve control (10) is set respectively, the other end is communicated with ancillary equipment;
3), an end of outlet pipe (9) is communicated with two or two row packed tower product gas gas outlets (13) respectively and by-pass valve control (10) is set respectively, the other end is communicated with ancillary equipment;
4), go up the product gas gas outlet (13) that balance pipe road (8) is communicated with two or two row packed towers, following balance pipe road (3) is communicated with two or two row packed tower mist air inlets (12), and is provided with by-pass valve control (10) respectively on upper and lower balance pipe road;
5), the end on ladder balance pipe road (4) is communicated with two or two row packed tower air hatch (11) respectively, the other end is communicated with the mist air inlet (12) of two or two row packed towers respectively, and by-pass valve control (10) is set respectively.
The invention is characterized in:
1), between two or two row packed towers, is provided with two-way or multichannel ladder balance pipe road (4), one end on ladder balance pipe road, every road is communicated with one or a row packed tower air hatch (11), the other end is communicated with the mist air inlet (12) of another or another row packed tower, and the position of air hatch (11) is in adsorbent bed middle part absorption interval (14).So-called middle part absorption interval is meant that the adsorbent of or a row packed tower removing top absorption interval (16) and the remaining middle interval in bottom absorption interval (18) back, as the adsorbent bed total length that loaded with one or a row packed tower is a measurement unit, absorption interval in top is 0%～25% an absorption interval of described length to the distance of top layer absorption aspect (15) promptly, and it is 0%～25% absorption interval of described total length to the distance of bottom adsorption layer face (19) promptly that interval is adsorbed in the bottom.
2), the present invention can be two tower structures arranged side by side, air hatch (11) standard is put the central core absorption aspect (17) that is in, central core absorption aspect i.e. the residing absorption aspect of length mid point of middle part absorption interval (14).
3), the present invention can also be two row packed tower structures arranged side by side, every row packed tower is composed in series by two above packed towers of equal number, air hatch (11) position is in any position on series pipe (5) passage.
Five, embodiments of the invention
Embodiments of the invention are as shown in Figure 1 and Figure 2: the air inlet pipeline (1) of one of a conducting or a row packed tower (7) and outlet pipe (9), the mixed raw material gas adsorbent (6) in the packed tower of flowing through, a certain component under higher relatively pressure in the mist is adsorbed agent (6) absorption, promptly this maybe this row packed tower carry out adsorption process.Gas exhaust piping (2) conducting of an another or a row packed tower simultaneously, pressure is reduced to desorption pressures, carries out the desorption and regeneration process.When the adsorption and desorption process finished, the ladder balance pipe road (4) that of adsorption process or a row packed tower were originally carried out in conducting was carried out ladder and is all pressed.After ladder is all pressed and is finished, closing in respective valves and the conducting by-pass valve control on balance pipe road (8) and following balance pipe road (3) carries out upper and lowerly all pressing, carry out the desorption and regeneration process originally carrying out one of adsorption process or a row packed tower afterwards, the another or the row packed tower that originally carried out desorption process carry out adsorption process, so move in circles, successively generate product gas.
Any equipment (weak adsorbate is the equipment of product gas) that carries out transformation adsorbing separation mist with the fixed absorbent bed, mixed raw material gas is flowed through when being in the packed tower of adsorption process, because the suction-operated of adsorbent, gas all can form a purity gradient along air flow direction in the tower, gas purity is the highest in the product gas outlet zone, the gas purity that is top layer absorption aspect (15) is the highest, and gas purity is minimum in the combi inlet port zone, and promptly the gas purity of bottom absorption aspect (19) is minimum.Conventional apparatus is to realize by the road conducting of upper and lower balance pipe for the pressure equalizing that raising product gas recovery rate adopts, can cause the low-purity gas in combi inlet port zone directly to enter the bottom absorption interval of another tower adsorbent like this, make the moment adsorbance of bottom absorption interval adsorbent very big, this, adsorbance directly had influence on the effective adsorbance of adsorbent in the absorption gas generation process moment, thereby cause the adsorbent utilization rate low, the factor of created gase of unit mass adsorbent is low, shortcomings such as the rate of recovery is low, energy consumption height.And the present invention has increased ladder balance pipe road, when packed tower adsorbs with the desorb end-of-job, conducting one road ladder balance pipe road, one of adsorption process end just or the higher gas of middle part absorption interval purity of a row packed tower are imported another or row packed tower bottom absorption interval, all press one or the interior stepped rising of gas purity of a row packed tower that desorption process has just been finished again through upper and lower.Because ladder is all pressed and is made the moment adsorbance of adsorbent reduce greatly, improved the effective adsorbance of adsorbent in the absorption gas generation process, thereby factor of created gase and the product gas recovery rate of adsorbent utilization rate, unit mass adsorbent have been improved, can produce the product gas of purity, have higher utility in the high-purity applications field up to the ppm level.
The raising of above-mentioned product gas recovery rate means the minimizing of required mixed raw material gas, also just means the reduction of energy consumption.The present invention has changed and utilizes pressure swing adsorption gas separation device can not produce the idea of purity up to the product gas of ppm level, because production cost and operating cost reduce greatly, has higher utility in the application with gas purity ppm level.
Claims (3)
1. pressure swing adsorption gas separation device, by two or two row packed towers (7), air inlet pipeline (1), outlet pipe (9), gas exhaust piping (2), last balance pipe road (8), following balance pipe road (3), ladder balance pipe road (4) constitutes, be filled with the adsorbent (6) that can adsorb a certain component gas in the mist in the packed tower, the connection by above-mentioned pipeline of two packed towers is parallel form and arranges, two row packed towers then are two row in parallel, every row packed tower is composed in series by series pipe (5) by two of equal number or two above packed towers, and the connected mode of each pipeline is as follows:
1), an end of air inlet pipeline (1) is communicated with the mixed gas inlet (12) of two or two row packed towers respectively, and by-pass valve control (10) is set respectively, the other end is communicated with ancillary equipment,
2), an end of gas exhaust piping (2) is communicated with the mixed gas inlet (12) of two or two row fillers respectively, and by-pass valve control (10) is set respectively, the other end is communicated with ancillary equipment,
3), an end of outlet pipe (9) is communicated with the product gas gas outlet (13) of two or two row packed towers respectively, and by-pass valve control (10) is set respectively, other end circulation ancillary equipment,
4), go up the product gas gas outlet (13) that balance pipe road (8) is communicated with two or two row packed towers, following balance pipe road (3) is communicated with two or two row packed tower mixed gas inlets (12), and is provided with by-pass valve control (10) respectively on upper and lower balance pipe road,
5), the end on ladder balance pipe road (4) is communicated with two or two row packed tower air hatch (11) respectively, the other end is communicated with the mist air inlet (12) of two or two row packed towers respectively, and by-pass valve control (10) is set respectively,
It is characterized in that: between two or two row packed towers, be provided with two-way or multichannel ladder balance pipe road (4), one end on ladder balance pipe road, every road is communicated with one or a row packed tower air hatch (11), the other end is communicated with the mist air inlet (12) of another or another row packed tower, the position of air hatch (11) is in adsorbent bed middle part absorption interval (14), so-called middle part absorption interval is meant that the adsorbent of or a row packed tower removing top absorption interval (16) and the remaining middle interval in bottom absorption interval (18) back, as the adsorbent bed total length with the filling of or a row packed tower is a measurement unit, absorption interval in top is 0%～25% an absorption interval of described length to the distance of top layer absorption aspect (1 5) promptly, and it is 0%～25% absorption interval of described total length to the distance of bottom adsorption layer face (19) promptly that interval is adsorbed in the bottom.
2. pressure swing adsorption gas separation device as claimed in claim 1 is characterized in that: have two tower structures arranged side by side, air hatch (11) position is in central core absorption aspect (17), and central core absorption aspect i.e. the residing absorption aspect of length mid point of middle part absorption interval (14).
3. pressure swing adsorption gas separation device as claimed in claim 1 is characterized in that: have two row packed tower parallel-connection structures, every row are composed in series by two of equal number or two above packed towers, and air hatch (11) position is in any position on series pipe (5) passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991016513A CN1142814C (en) | 1999-02-08 | 1999-02-08 | Variable pressure gas adsorbing separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991016513A CN1142814C (en) | 1999-02-08 | 1999-02-08 | Variable pressure gas adsorbing separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1235861A CN1235861A (en) | 1999-11-24 |
| CN1142814C true CN1142814C (en) | 2004-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991016513A Expired - Lifetime CN1142814C (en) | 1999-02-08 | 1999-02-08 | Variable pressure gas adsorbing separator |
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| Country | Link |
|---|---|
| CN (1) | CN1142814C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2398522A (en) * | 2003-02-18 | 2004-08-25 | Air Prod & Chem | Apparatus for the purification of gasses. |
| CN102009963B (en) * | 2010-09-30 | 2013-03-20 | 中国舰船研究设计中心 | High-purity nitrogen preparing method and device |
| CN107754555B (en) * | 2017-12-04 | 2023-05-12 | 北京北大先锋科技股份有限公司 | Method and device for separating ozone and oxygen through pressure swing adsorption |
-
1999
- 1999-02-08 CN CNB991016513A patent/CN1142814C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1235861A (en) | 1999-11-24 |
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Addressee: Ruiqi air Separation Equipment Co., Ltd., Wenzhou Document name: Notification of registration; notice of patent for invention |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI RUIQI GAS EQUIPMENT CO., LTD. Free format text: FORMER OWNER: WENZHOU RUIQI AIR SEPARATING EQUIPMENT CO., LTD. Effective date: 20080411 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080411 Address after: Shanghai Jinshan District Shanyang town Ting Wei Road No. 2099 Patentee after: Shanghai Rich Gas Equipment Co., Ltd. Address before: Zhejiang Province Economic and Technological Development Zone Wenzhou District No. 33 Ruiqi Air Separation Equipment Co Ltd Patentee before: Ruiqi air Separation Equipment Co., Ltd., Wenzhou |
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| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI TONGXUE INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: SHANGHAI RICH GAS EQUIPMENT CO., LTD. Effective date: 20150217 |
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Free format text: CORRECT: ADDRESS; FROM: 201508 JINSHAN, SHANGHAI TO: 201505 JINSHAN, SHANGHAI |
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Effective date of registration: 20150217 Address after: Jinshan District Wei Chang Road 201505 Shanghai City No. 293 Building 2 room 6105 Patentee after: SHANGHAI TONGXUE INDUSTRIAL CO., LTD. Address before: 201508 Shanghai Jinshan District Shanyang town Ting Wei Road No. 2099 Patentee before: Shanghai Rich Gas Equipment Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20040324 |
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| CX01 | Expiry of patent term |