JPH02284622A - Separation of useful gas - Google Patents
Separation of useful gasInfo
- Publication number
- JPH02284622A JPH02284622A JP1107006A JP10700689A JPH02284622A JP H02284622 A JPH02284622 A JP H02284622A JP 1107006 A JP1107006 A JP 1107006A JP 10700689 A JP10700689 A JP 10700689A JP H02284622 A JPH02284622 A JP H02284622A
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- gas
- useful gas
- useful
- adsorption tower
- 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 description 5
- 239000003463 adsorbent Substances 0.000 claims abstract description 47
- 238000001179 sorption measurement Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 31
- 239000000843 powder Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract description 2
- 239000000741 silica gel Substances 0.000 abstract description 2
- 229910002027 silica gel Inorganic materials 0.000 abstract description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000011049 filling Methods 0.000 description 5
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は圧力スイング吸着法（以Ｔ ＰＳ醐去と略称す
る）を利用して、ＣＯ等の有用ガスを含む原料ガスから
、高純度の有用ガスを分離精製する方法に関するもので
ある。Detailed Description of the Invention (Field of Industrial Application) The present invention utilizes the pressure swing adsorption method (hereinafter abbreviated as TPS) to obtain high-purity gas from a raw material gas containing useful gases such as CO. The present invention relates to a method for separating and purifying useful gases.
（従来の技術）
ＣＤを含む混合ガスからＣＯの１ノを分離回収する方法
として、深冷分離法、吸収法および吸着法かあることは
周知の通りである。その中でも近年吸着法として、ＰＳ
Ａによる００分離技術の開発か進められている。(Prior Art) It is well known that there are cryogenic separation methods, absorption methods, and adsorption methods as methods for separating and recovering CO from a mixed gas containing CD. Among them, in recent years, PS has been used as an adsorption method.
The development of 00 separation technology by A is progressing.
例えばＣＤの分離回収方法として、特開昭５９２６１２
１ ’；’；−公報、同６１−１２２１１１号公報、同
６２１１９１０６号公報１同６３−７８２２号公報など
にＰＳＡの操作方法が種々提案されている。For example, as a method for separating and recovering CDs, JP-A No. 592,612
Various methods of operating the PSA have been proposed in Publication No. 1 ';';-, Publication No. 61-122111, Publication No. 62119106, Publication No. 63-7822, etc.
また、ＣＯの選択的吸着剤として、特開昭５９６９４１
４号公報、同６０−９００３７号公報、同８１−１８４
３１号公報１２と種々の製造方法が提案されている。In addition, as a selective adsorbent for CO, JP-A-596941
Publication No. 4, Publication No. 60-90037, Publication No. 81-184
No. 31 Publication 12 and various manufacturing methods have been proposed.
従来の吸着剤ではＣＯの選択吸着能が小さいため、２段
のＰＳＡ法方式を採用していたが、近年ＣＯの選択吸着
能が非常に大きな吸着剤が開発されるようになり、１段
のＰＳＡ法で高純度のＣＯを分離回収することができる
ようにｆ、／った。Conventional adsorbents have a small selective adsorption capacity for CO, so a two-stage PSA method has been adopted, but in recent years, adsorbents with a very large selective adsorption capacity for CO have been developed, and a one-stage PSA method has been adopted. The PSA method was used to enable the separation and recovery of highly pure CO.
（発明が解決しようとする課題）
しかしながら、高性能のＧＯ吸着剤は比表面積を大きく
するため、粉化しやすいものが多く、吸着塔からキャリ
ーアップして切替え弁や真空ポンプの目詰まりをおこす
心配があった。本発明者らはかかる欠点に鑑み、２種以
上のＣＯ等の有用ガス吸着剤を吸着塔内に最適に充填す
ることによって、上述した粉化問題を解決すると同時に
、高性能の有用ガス分離精製方法を提案するものである
。(Problem to be solved by the invention) However, since high-performance GO adsorbents have a large specific surface area, many of them are easily powdered, and there is a risk of carry-up from the adsorption tower and clogging of switching valves and vacuum pumps. was there. In view of these drawbacks, the present inventors solved the above-mentioned pulverization problem by optimally filling an adsorption tower with two or more kinds of useful gas adsorbents such as CO, and at the same time solved the problem of high-performance useful gas separation and purification. This paper proposes a method.
（課題を解決するための手段）
本願発明の要旨は、有用ガスを含む原料ガスより圧力ス
イング吸着法で有用ガスを分離する方法において、吸着
塔の前段に粉化しにくい吸着剤を充填し、次いで吸着塔
の後段に吸着能の大きな吸着剤を充填し、該前段から後
段の吸着剤へ順次有用ガスを通過せしめることを特徴と
する有用ガスの分離方法である。(Means for Solving the Problems) The gist of the present invention is to provide a method for separating useful gas from a raw material gas containing useful gas by pressure swing adsorption method, in which an adsorbent that is difficult to powder is filled in the front stage of an adsorption tower, and then This method of separating useful gas is characterized in that an adsorbent having a large adsorption capacity is packed in the latter stage of an adsorption tower, and the useful gas is sequentially passed from the former stage to the latter stage adsorbent.
即ち、本発明は粉化しやすいが有用ガスの選択吸着能の
すぐれた吸着剤と、粉化しにくい強固な有用ガス吸着剤
を少なくとも２種類以上同一の吸着塔に最適に充填する
ものである。粉化しにくい強固な吸着剤を吸着塔の前段
に通して流速を抑制し、吸着ガス成分の濃度が低下する
後半即ち、吸着塔の後段に吸着能の大きな吸着剤を配置
することを特徴としている。具体的には、原料ガスを吸
着塔の下部から導入する場合、吸着塔内は減圧状態から
加圧状態に穆行するため、原料ガスは最初大きな流速で
吸着塔内を上昇することになる。吸着剤の粉化は主にこ
の加圧工程に発生するものと考えられる。そこで吸着塔
の下部即ち、前段には粉化しにくい強固な吸着剤を配置
し、原料ガスの流速をまずここで緩和させ、しかる後に
、粉化しやすいが高性能の吸着剤に導入してやる。原料
ガス中の吸着成分は徐々に吸着されて、濃度が低下する
ため、高性能の吸着剤を後段に配置することは回収率を
上げるために有効である。また最後段に前段と同様の強
固な吸着剤を配置してキャリーアップを防止する一方、
パージガスなどの上方からのガス流を緩和する目的でサ
ンドイッチ構造とすることも効果的である。That is, the present invention optimally fills the same adsorption tower with at least two kinds of adsorbents that are easy to powder but have excellent selective adsorption ability for useful gases and strong useful gas adsorbents that are difficult to powder. A strong adsorbent that is difficult to powder is passed through the first stage of the adsorption tower to suppress the flow rate, and an adsorbent with high adsorption capacity is placed in the latter half of the adsorption tower, where the concentration of adsorbed gas components decreases. . Specifically, when the raw material gas is introduced from the lower part of the adsorption tower, the inside of the adsorption tower moves from a reduced pressure state to a pressurized state, so the raw material gas initially rises inside the adsorption tower at a high flow rate. It is thought that powdering of the adsorbent mainly occurs during this pressurization process. Therefore, a strong adsorbent that is difficult to powder is placed in the lower part of the adsorption tower, that is, in the front stage, and the flow rate of the raw material gas is first relaxed here, and then it is introduced into a high-performance adsorbent that is easy to powder. Since the adsorbed components in the raw material gas are gradually adsorbed and the concentration decreases, placing a high-performance adsorbent in the latter stage is effective in increasing the recovery rate. In addition, a strong adsorbent similar to the previous stage is placed in the last stage to prevent carry-up.
It is also effective to use a sandwich structure for the purpose of alleviating the flow of gas such as purge gas from above.
尚、本発明で述べている粉化しにくい吸着剤とはシャッ
ター試験で得られた粉率が１０％以下のものをいうもの
であり、シャッター試験とは１ ｍｍ以上の吸着剤１０
０ｇ計量し、１ｍの落下を繰り返した後、１ ｍｍ以下
に粉化した割合（粉率）で吸着剤の粉化具合を評価する
ものである。In addition, the adsorbent that is difficult to powder as described in the present invention is one with a powder ratio of 10% or less obtained in a shutter test, and the shutter test refers to an adsorbent with a particle size of 1 mm or more.
After weighing 0g and repeating a 1m drop, the degree of pulverization of the adsorbent is evaluated based on the ratio of pulverization to 1 mm or less (powder ratio).
次いで後段に用いる吸着剤について述べると、後段に用
いる１及首剤の吸着能は前段に用いる吸着剤の吸着能に
対して２０％以上高いものを言う。２０％未満では前段
の吸着によって有用ガスの濃度が低下するため、後段で
の吸着が効率よく行なわないためである。Next, referring to the adsorbent used in the latter stage, the adsorption capacity of the first and second agents used in the latter stage is 20% or more higher than that of the adsorbent used in the former stage. This is because if it is less than 20%, the concentration of useful gas decreases due to the adsorption in the first stage, and therefore the adsorption in the second stage will not be carried out efficiently.
本発明に用いる吸着剤は具体的には例えば活性アルミナ
、シリカゲル、活性炭に塩化銅（Ｉ）を担持させたもの
、活性炭に四塩化（Ｉ）アルミニウム錯体を担持させた
もの等が有利である。Specifically, the adsorbent used in the present invention is advantageously, for example, activated alumina, silica gel, activated carbon supported with copper(I) chloride, activated carbon supported with aluminum tetrachloride(I) complex, and the like.
前述した吸着剤を粉化しにくい吸着剤、あるいは吸着能
の大きな吸着剤とするには、吸着剤を製造する際に焼成
温度等を調整して造りわけるものである。In order to make the above-mentioned adsorbent into an adsorbent that is difficult to powder or has a high adsorption capacity, the calcination temperature and the like are adjusted during the production of the adsorbent.
施 例〕
本発明にもとついて、例えば転炉ガスから高純度の一酸
化炭素を分ＩＩＩ精製した実施例について以下に具体的
に説明する。第１図（ア）、ｍ。EXAMPLE] Based on the present invention, an example in which high purity carbon monoxide was purified from converter gas by fraction III will be specifically described below. Figure 1 (a), m.
（’／）、（１）は吸着剤の充填方法を種々変えた吸着
塔内を模式的に示したもので、２種類の吸着剤（Ａ）
、 （Ｂ）は塩化銅（１）を活性炭に担持させたもので
あり、そのＣＯ吸着性能と強度をそれぞれ表１に示す。('/), (1) schematically shows the inside of the adsorption tower with various adsorbent filling methods.
, (B) is copper chloride (1) supported on activated carbon, and its CO adsorption performance and strength are shown in Table 1.
〔実
表 １
第１図の（ア）および（イ）は本発明にもとづいて、粉
化しにくい吸着剤（Ｂ）を下方に３０％充填し、（ア）
ではその上方に吸着剤（Ａ）を、（イ）ではさらに最上
段に１０％吸着剤（Ｂ）を配置して、上部からのキャリ
ーアウトを防止する充填構造とした。（つ）、（１）は
比較のために、従来通り１種類の吸着剤を充填した例で
ある。表２に各充填による比較例をそれぞｈ示した。本
発明によれは、吸着剤の粉化トラブルもなく、高純度の
ＣＯを高回収率で分離精製することができた。[Actual Table 1 (A) and (B) in Figure 1 are based on the present invention, with 30% of the adsorbent (B) that is difficult to powder being filled in the lower part, and (A)
In this example, the adsorbent (A) was placed above the adsorbent, and in (a), the 10% adsorbent (B) was further placed on the uppermost stage to form a filling structure to prevent carry-out from the top. For comparison, (1) and (1) are examples in which one type of adsorbent was filled in the conventional manner. Table 2 shows comparative examples with each filling. According to the present invention, highly pure CO could be separated and purified at a high recovery rate without the trouble of pulverization of the adsorbent.
表 ２ ある。Table 2 be.
第７図（７） 、 （イ）、（つ）、（１）は吸着塔へ
の＠着剤の充填方法を模式的に示した図である。
１・・・吸着塔
（発明の効果）
本発明によれは、粉化しやすいが有用ガスの潤沢吸着能
の非常に大きな吸着剤をうまく利用することによって、
高純度のＣＯガス等の有用ガスを高回収率で分離精製で
きる等顕著な効果が（ア）
（イ）
図
（つ）FIGS. 7(7), (a), (t), and (1) are diagrams schematically showing a method of filling an adsorption tower with an adhesion agent. 1... Adsorption tower (effect of the invention) According to the present invention, by making good use of an adsorbent that is easily powdered but has a very large adsorption capacity for abundant useful gases,
It has remarkable effects such as being able to separate and purify useful gases such as high-purity CO gas with a high recovery rate (A) (B) Figure (T)
Claims (1)
有用ガスを分離する方法において、吸着塔の前段に粉化
しにくい吸着剤を充填し、次いで吸着塔の後段に吸着能
の大きな吸着剤を充填し、該前段から後段の吸着剤へ順
次有用ガスを通過せしめることを特徴とする有用ガスの
分離方法1 In a method of separating useful gases from a raw material gas containing useful gases by pressure swing adsorption, the first stage of the adsorption tower is filled with an adsorbent that is difficult to powder, and then the second stage of the adsorption tower is filled with an adsorbent with a high adsorption capacity. A method for separating useful gas, characterized by passing the useful gas sequentially from the first stage to the second stage adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1107006A JPH02284622A (en) | 1989-04-26 | 1989-04-26 | Separation of useful gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1107006A JPH02284622A (en) | 1989-04-26 | 1989-04-26 | Separation of useful gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02284622A true JPH02284622A (en) | 1990-11-22 |
Family
ID=14448105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1107006A Pending JPH02284622A (en) | 1989-04-26 | 1989-04-26 | Separation of useful gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02284622A (en) |
-
1989
- 1989-04-26 JP JP1107006A patent/JPH02284622A/en active Pending
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