JPS62273026A - Separation of high pressure gaseous mixture - Google Patents
Separation of high pressure gaseous mixtureInfo
- Publication number
- JPS62273026A JPS62273026A JP61116166A JP11616686A JPS62273026A JP S62273026 A JPS62273026 A JP S62273026A JP 61116166 A JP61116166 A JP 61116166A JP 11616686 A JP11616686 A JP 11616686A JP S62273026 A JPS62273026 A JP S62273026A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- gas
- power
- line
- reduced
- 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.)
- Pending
Links
- 238000000926 separation method Methods 0.000 title abstract description 10
- 239000008246 gaseous mixture Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 63
- 239000003463 adsorbent Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 101100441097 Dictyostelium discoideum crlG gene Proteins 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【発明の詳細な説明】
３発明の詳細な説明
〔産業上の利用分野〕
本発明は、圧力揺動式吸着法（以下ＰＥＩＡと略す）を
利用したガス分離方法に関するもので、特に高圧混合ガ
スに適用する場合に有効な方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a gas separation method using a pressure swing adsorption method (hereinafter abbreviated as PEIA), and particularly relates to a gas separation method using a pressure swing adsorption method (hereinafter abbreviated as PEIA). Concerning methods that are effective when applied to
ＰＳＡによるガス分離は、吸着剤を充填した塔に混合ガ
スを導入し、易吸着ガス成分は吸着剤に吸着させ、難吸
着ガス成分は通過させることによりガスを分離する。こ
の時、各ガス成分と吸着剤の吸着性は、組成、温度、圧
力によって変化し、目的とするガスを高濃度かつ高収率
で回収しようとするために、圧力を減じる必要がある時
もある。In gas separation by PSA, a mixed gas is introduced into a column filled with an adsorbent, and easily adsorbed gas components are adsorbed by the adsorbent, while poorly adsorbed gas components are passed through to separate the gases. At this time, the adsorption properties of each gas component and the adsorbent change depending on the composition, temperature, and pressure, and there are times when it is necessary to reduce the pressure in order to recover the target gas at high concentration and high yield. be.
一方、通過した非吸着ガスは、次工程へ送る、あるいは
原料ガスに戻す必要があり、昇圧をする必要のある場合
がある。On the other hand, the passed non-adsorbed gas needs to be sent to the next step or returned to the raw material gas, and may need to be pressurized.
従来、ＰＳＡによるガス分離装置に導入するガスの圧力
は、原料ガスの圧力とし、通過ガスの圧力はＩＪＸ科ガ
ス圧力と同等とし、吸着されたガスは、脱着時、圧力低
下あるいは減圧していた。Conventionally, the pressure of the gas introduced into the gas separation device using PSA was the pressure of the raw material gas, the pressure of the passing gas was equal to the IJX gas pressure, and the pressure of the adsorbed gas was reduced or reduced during desorption. .
従って、吸着剤の最も効率的な使用をしようとすれば、
圧力調整のために外部動力を供給したり、逆に動力を低
減するために、吸着剤の性能を犠牲とした範囲で使用す
るなど、必らずしも経済的に最適ではなかった。Therefore, for the most efficient use of adsorbents,
It was not always economically optimal, as external power was supplied to adjust the pressure, or conversely, the performance of the adsorbent was sacrificed in order to reduce the power.
吸着剤に吸着されるガスの量はガスの圧力と略比例関係
にあるが、ガスの種類によって若干具なる。従って、あ
るガス成分を効果的２選択的に吸着させ、脱着回収しよ
うとすれば、最適なガス圧力に調節する必要がある。The amount of gas adsorbed by the adsorbent is approximately proportional to the gas pressure, but varies somewhat depending on the type of gas. Therefore, if a certain gas component is to be effectively and selectively adsorbed and desorbed and recovered, it is necessary to adjust the gas pressure to an optimum value.
例えば、高圧のままガスを吸着剤に吸着させると、吸着
ガス絶対量は増すが、目的成分以外のガスの吸着量も増
加し、所定の目的成分ガス濃度が得られない。また、高
圧であればあるほど、死容積中の非目的成分ガス量は増
え、脱着回収時の目的成分ガス濃度は低下する。このよ
うな弊害を除くために、高圧で一旦吸着したガス分減圧
操作により脱着放出し、死容積のガスを同伴除去すると
ともに、目的成分ガス回収に適した圧力に調節するよう
な操作を加えている。For example, if gas is adsorbed by an adsorbent under high pressure, the absolute amount of adsorbed gas will increase, but the adsorption amount of gases other than the target component will also increase, making it impossible to obtain a predetermined target component gas concentration. Furthermore, the higher the pressure, the more the amount of non-target component gas in the dead volume increases, and the lower the target component gas concentration during desorption and recovery. In order to eliminate such adverse effects, the gas that has been adsorbed at high pressure is desorbed and released by decompression operation, and the dead volume of gas is removed along with it, and an operation is added to adjust the pressure to an appropriate level for recovering the target component gas. There is.
この場合、通過ガスの回収率は大巾に低下する、。In this case, the recovery rate of the passing gas is significantly reduced.
即ち、吸着剤にとって最も効率的（目的ガス成分に対す
る吸着量２選択性が良好な）圧力で、ＰＳＡを操作する
ことが重要であり、なおかつ、圧力？調節することに伴
なう動力を節減することが重要でちる。That is, it is important to operate the PSA at the most efficient pressure for the adsorbent (good adsorption amount 2 selectivity for the target gas component), and at the same time, the pressure? It is important to save power associated with adjustment.
本発明は、高圧混合ガスから圧力揺動式吸着装置により
特定ガスを分離する方法において、前記高圧混合ガスを
膨張機により圧力を低減し、動力を回収した後、前記圧
力揺動式吸着装置に導入し、該圧力揺動式吸着装置？通
過した非吸着ガスの昇圧用圧縮機の動力として、上記回
収動力金当てることを特徴とする高圧混合ガスの分離方
法に関する。 。The present invention provides a method for separating a specific gas from a high-pressure mixed gas using a pressure swing type adsorption device, in which the pressure of the high-pressure mixed gas is reduced by an expander and power is recovered, and then the pressure swing type adsorption device is separated. Introducing the pressure swing adsorption device? The present invention relates to a method for separating a high-pressure mixed gas, characterized in that the recovered power is used as motive power for a compressor for pressurizing the passed non-adsorbed gas. .
すなわち、本発明は、高圧混合ガスをＰＳＡに適用する
に際して、吸着剤にとって最適な圧力に膨張機を介して
低下させると同時に、断熱膨張による動力を取出す一方
、分離後のガスすなわちｔｅ１通過ガス又は（ｂ）吸着
ガスの圧力を次工程に必要な圧力に調節するため圧縮機
等を必要とするが、先の膨張機から得られる動力をこれ
に当てることにより、全体としては、吸着剤にとって最
も効率的かつ動力消費量の少ないシステムを提供するも
のである。That is, when applying a high-pressure mixed gas to PSA, the present invention lowers the pressure to the optimum pressure for the adsorbent via an expander, extracts power by adiabatic expansion, and at the same time extracts the power from the separated gas, that is, the te1 passing gas or (b) A compressor is required to adjust the pressure of the adsorbed gas to the pressure required for the next step, but by applying the power obtained from the expander to this, the best This provides an efficient system with low power consumption.
第１図は、本発明方法の作用を説明するための図でちる
。FIG. 1 is a diagram for explaining the operation of the method of the present invention.
第１図において、ライ／１から導入される高圧の原料ガ
スは膨張機Ａにより減圧されると同時に、この時の断熱
膨張による動力を回収する。In FIG. 1, high-pressure raw material gas introduced from lie/1 is depressurized by expander A, and at the same time, the power generated by the adiabatic expansion at this time is recovered.
減圧された＠料ガスはライン２からＰＡＳ装置Ｃへ導入
され、特定ガスが吸着・脱着されて、製品ガスがライン
３から取出される。ＰＡＢ装置Ｃを通過したガスはライ
ン４から圧縮機Ｂへ導入され、昇圧ガスとなってライ１
５から次工程へ送られる３、この圧縮機Ｂは、上記の膨
張機Ａで回収された動力により作動される。The reduced pressure feed gas is introduced into the PAS device C through line 2, a specific gas is adsorbed and desorbed, and the product gas is taken out through line 3. The gas that has passed through PAB device C is introduced from line 4 to compressor B, becomes pressurized gas, and is transferred to line 1.
This compressor B, which is sent from 5 to the next step, is operated by the power recovered by the expander A described above.
本発明方法により、以下の要領で、ア／モニア合成ブａ
セスからＣｏ分離を行った。According to the method of the present invention, the ammonium synthesis block a is obtained in the following manner.
Co was separated from the cess.
本発明者らのテスト結果によれば、ゼオライト系吸着剤
等における最適吸着圧力は１．５〜１０に９／ｃｙ？Ｇ
で心った。これに対し、上記プロセス内の原料ガス圧力
はＳ （Ｉ Ｖ−９／ｃｒｌＧでちった。According to the test results of the present inventors, the optimum adsorption pressure for zeolite-based adsorbents, etc. is 1.5 to 10 to 9/cy? G
I thought about it. On the other hand, the raw material gas pressure in the above process was set at S (IV-9/crlG).
（１） 一旦、５ Ｃｌ Ｋｇ／ＪＧで吸着させ、１
．５〜１０ψ’ｙｔ？ Ｇまで減圧した後、ＣＯを脱着
回収した場合、ＣＯの回収率は２５％であった。(1) Once adsorbed with 5 Cl Kg/JG, 1
．． 5~10ψ'yt? When CO was desorbed and recovered after the pressure was reduced to G, the recovery rate of CO was 25%.
（２）・一方、ガス圧力を最初から１．５〜１０皓９Ｇ
に減圧した後、吸着させＣＯを分離した場合の００回収
率は７０％であった。(2)・Meanwhile, increase the gas pressure to 1.5 to 10 9G from the beginning.
The 00 recovery rate when CO was separated by adsorption after being depressurized was 70%.
しかしながら、通過ガスの圧力も１．５〜１０に９／ｃ
ｔｔ？Ｇとなシ、次工程に送るためには昇圧が必要であ
った。However, the pressure of the passing gas is also 1.5 to 10 9/c
tt? However, in order to send it to the next process, it was necessary to increase the pressure.
（３） 原料ガス５０ψ讐 を膨張機を介して１．５
〜１０ ’に９／ｙｐＧに減圧し、断熱膨張動力を回収
し、通過ガスの昇圧動力に使用したところ、昇圧動力を
外部から供給することなしに、昇圧することができた。(3) 50φ of raw material gas is passed through an expander to 1.5
When the pressure was reduced to 9/ypG at ~10' and the adiabatic expansion power was recovered and used to boost the pressure of the passing gas, the pressure could be increased without externally supplying pressure boosting power.
（４） 通常、アンモニア合成プロセスガスハ高温。(4) Normally, the ammonia synthesis process gas is at high temperature.
高圧であるが、このようなエキスパンダーコンプレッサ
（膨張減圧機−圧縮昇圧機）を適用することによ、９、
ｐｓＡに最適な低温、低圧ガスに調整することができ、
ＰＳＡ通過ガス等の次工程への供給に必要な圧力への調
整を外部動力なしに行うことができた。Although the pressure is high, by applying such an expander compressor (expansion pressure reducer - compression booster), 9.
It can be adjusted to the low temperature and low pressure gas that is optimal for psA,
It was possible to adjust the pressure necessary for supplying PSA passing gas to the next process without using external power.
なお、エキスパンダーフンブレッサハ高価であるが、圧
力低下によるＰＥＩＡ装置コストの低減、さらには００
回収率向上による原料ガス量低減の効果がそれｔ上廻っ
ている。即ち、本発明方法によれば、全体としては高効
率。Although the expander Humbressa is expensive, it reduces the cost of PEIA equipment due to pressure reduction, and
The effect of reducing the amount of raw material gas by improving the recovery rate exceeds this by t. That is, according to the method of the present invention, overall efficiency is high.
低コストのガス分離装置としうる。It can be a low-cost gas separation device.
（１）本発明方法によれば、ガスの分離効果を高め、か
つ省エネルギーを図ることができる。(1) According to the method of the present invention, it is possible to enhance the gas separation effect and to save energy.
（２） 高圧のガスから特定のガスを分離する場合、
吸着剤の性能に適合すべく圧力を低下させるが、この時
膨張機によって圧力低下と同時に動力を回収することが
可能であり、この動力分分離後のガスの昇圧に利用すれ
ば、全体として高効率のガス分離ができる。(2) When separating a specific gas from high pressure gas,
The pressure is lowered to match the performance of the adsorbent, but at this time it is possible to recover power at the same time as the pressure is lowered using an expander.If this power is used to boost the pressure of the gas after separation, the overall increase in pressure can be increased. Efficient gas separation is possible.
第１図は本発明方法の作用を説明するための図である。 FIG. 1 is a diagram for explaining the operation of the method of the present invention.
Claims (1)
分離する方法において、前記高圧混合ガスを膨張機によ
り圧力を低減し、動力を回収した後、前記圧力揺動式吸
着装置に導入し、該圧力揺動式吸着装置を通過した非吸
着ガスの昇圧用圧縮機の動力として、上記回収動力を当
てることを特徴とする高圧混合ガスの分離方法。In a method of separating a specific gas from a high-pressure mixed gas using a pressure swing adsorption device, the pressure of the high-pressure mixed gas is reduced by an expander, power is recovered, and then the gas is introduced into the pressure swing adsorption device. A method for separating a high-pressure mixed gas, characterized in that the recovered power is applied as power to a compressor for boosting the pressure of non-adsorbed gas that has passed through a pressure swing type adsorption device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61116166A JPS62273026A (en) | 1986-05-22 | 1986-05-22 | Separation of high pressure gaseous mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61116166A JPS62273026A (en) | 1986-05-22 | 1986-05-22 | Separation of high pressure gaseous mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62273026A true JPS62273026A (en) | 1987-11-27 |
Family
ID=14680419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61116166A Pending JPS62273026A (en) | 1986-05-22 | 1986-05-22 | Separation of high pressure gaseous mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62273026A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5403384A (en) * | 1993-10-14 | 1995-04-04 | Fmc Corporation | Apparatus and method for avoidance of turbomachinery pressure surge |
-
1986
- 1986-05-22 JP JP61116166A patent/JPS62273026A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5403384A (en) * | 1993-10-14 | 1995-04-04 | Fmc Corporation | Apparatus and method for avoidance of turbomachinery pressure surge |
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