JP2969356B2 - Adsorption tower - Google Patents
Adsorption towerInfo
- Publication number
- JP2969356B2 JP2969356B2 JP1140705A JP14070589A JP2969356B2 JP 2969356 B2 JP2969356 B2 JP 2969356B2 JP 1140705 A JP1140705 A JP 1140705A JP 14070589 A JP14070589 A JP 14070589A JP 2969356 B2 JP2969356 B2 JP 2969356B2
- Authority
- JP
- Japan
- Prior art keywords
- adsorption tower
- adsorption
- tower
- diameter
- adsorbent
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、二種類以上の吸着剤を層状に充填する吸着
塔に関する。The present invention relates to an adsorption tower in which two or more adsorbents are packed in layers.
従来から、混合ガス中の特定成分を分離してガスの精
製を行う一手段として吸着分離装置が知られている。一
般にこの吸着分離装置は、混合ガス中の特定成分を吸着
する吸着剤を充填した吸着塔を用いて行われるもので、
複数の吸着塔を並列に接続し、その分離工程の一例とし
て、それぞれの吸着塔を吸着，洗浄，脱着の各工程に順
次切替えて混合ガス中の特定成分を吸着分離する方法が
ある。2. Description of the Related Art Conventionally, an adsorption separation device has been known as a means for purifying a gas by separating a specific component in a mixed gas. Generally, this adsorption separation apparatus is performed using an adsorption tower filled with an adsorbent that adsorbs a specific component in a mixed gas,
As an example of a separation step of connecting a plurality of adsorption towers in parallel, there is a method of sequentially switching each adsorption tower to adsorption, washing, and desorption steps to adsorb and separate specific components in a mixed gas.
上記のような吸着分離装置には、一般に第２図及び第
３図に示すような直管状の吸着塔1a,1bが用いられてい
た。これらの吸着塔1a,1bは、混合ガスの導入側や分離
ガスの導出側に、配管接続用のキャップ状部材２や、吸
着剤の充填，交換，内部点検，清掃等のための蓋3a,3b
を取付けるフランジ部4a,4b、あるいは一般的なこの種
の容器に見られる端部部材5,5を有しているが、実際に
吸着剤を充填する部分は、吸着塔中央部の直管状部分6
a,6bであり、ガスの流れ方向に対する吸着剤の断面積
は、全長に亙って略同一である。また、吸着塔1a,1bに
接続する配管7a,7bも吸着塔の形状等により適宜な位置
に設けられている。In the above adsorption separation apparatus, generally, straight tubular adsorption towers 1a and 1b as shown in FIGS. 2 and 3 have been used. These adsorption towers 1a and 1b are provided with a cap-shaped member 2 for pipe connection and a lid 3a, 1 for filling, replacement, internal inspection, cleaning and the like of the adsorbent, on the mixed gas introduction side and the separation gas discharge side. 3b
It has flanges 4a, 4b for mounting, or end members 5, 5 found in a general container of this type, but the part that actually fills the adsorbent is a straight tubular part in the center of the adsorption tower. 6
a, 6b, and the cross-sectional area of the adsorbent in the gas flow direction is substantially the same over the entire length. Also, pipes 7a and 7b connected to the adsorption towers 1a and 1b are provided at appropriate positions depending on the shape of the adsorption tower and the like.
〔発明が解決しようとする課題〕 しかしながら、直管状の吸着塔に二種類以上の吸着剤
を積層充填して、例えば混合ガス中の複数の成分を順次
吸着させる場合には、それぞれの吸着剤に最適なガスの
流速が得られず、分離効率が低下し、吸着塔が大型化す
る。[Problems to be Solved by the Invention] However, when two or more types of adsorbents are stacked and filled in a straight tubular adsorption tower, for example, when a plurality of components in a mixed gas are sequentially adsorbed, each adsorbent is The optimum gas flow rate cannot be obtained, the separation efficiency decreases, and the adsorption tower becomes large.
そこで、本発明は、それぞれの吸着剤に最適なガスの
流速が得られて分離効率を向上させることができる吸着
塔を提供することを目的としている。Accordingly, an object of the present invention is to provide an adsorption tower capable of obtaining an optimal gas flow rate for each adsorbent and improving separation efficiency.
上記した目的を達成するために、本発明は、二種類以
上の吸着剤を積層充填する吸着塔において、該吸着塔の
塔径を塔長方向の途中で吸着剤層毎に段階的に変えたこ
とを特徴とする。In order to achieve the above object, the present invention, in an adsorption tower in which two or more types of adsorbents are stacked and packed, the tower diameter of the adsorption tower is changed stepwise for each adsorbent layer in the middle of the tower length direction. It is characterized by the following.
上記のごとく、吸着塔の塔径を吸着剤層毎に段階的に
変えることにより、大径部のガスの流速を下げることが
できる。したがって、塔径を適宜設定することにより、
吸着される成分に適した流速が得られる。As described above, the flow rate of the gas in the large diameter portion can be reduced by changing the tower diameter of the adsorption tower step by step for each adsorbent layer. Therefore, by appropriately setting the tower diameter,
A flow rate suitable for the component to be adsorbed is obtained.
以下、本発明を図面に示す実施例に基づいて、さらに
詳細に説明する。Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.
第１図に示すように、本発明の吸着塔30は、該吸着塔
30の塔径を塔長方向の途中で段階的に変えて小径部31と
大径部32とを形成したものである。このように吸着塔30
の塔径を塔長方向の途中で段階的に変えることにより、
吸着塔内部のガスの流速を、小径部31では速く、大径部
32では遅くすることができる。したがって、大径部32で
弱吸着成分を効率よく吸着することができ、吸着塔30の
使用目的により最適なガスの流速を得ることができる。As shown in FIG. 1, the adsorption tower 30 of the present invention
The small diameter part 31 and the large diameter part 32 are formed by changing the diameter of the tower 30 stepwise in the middle of the tower length direction. Thus, the adsorption tower 30
By gradually changing the diameter of the tower in the middle of the tower length direction,
The flow velocity of the gas inside the adsorption tower is high in the small diameter section 31 and large in the large diameter section.
At 32 can be slow. Accordingly, the weakly adsorbed component can be efficiently adsorbed by the large diameter portion 32, and an optimal gas flow rate can be obtained depending on the purpose of use of the adsorption tower 30.
上記吸着塔30の塔径を変化させる位置及びその径は、
該吸着塔30に導入する混合ガスの組成、吸着塔30で吸着
する成分の種類、即ち吸着塔30の内部に充填する吸着剤
の種類により適宜設定することができ、例えば混合ガス
中の複数の成分を複数の吸着剤を積層して順次吸着させ
る場合に、該吸着剤の種類ごとにその部分の塔径を変え
て、それぞれの吸着剤に最適なガスの流速とすることが
でき、分離効率を向上させることができる。The position where the tower diameter of the adsorption tower 30 is changed and its diameter are as follows:
The composition of the mixed gas introduced into the adsorption tower 30, the type of the component adsorbed in the adsorption tower 30, that is, can be appropriately set depending on the type of the adsorbent to be filled in the adsorption tower 30, for example, a plurality of In the case where a plurality of adsorbents are layered and sequentially adsorbed, the column diameter can be changed for each type of adsorbent to obtain an optimal gas flow rate for each adsorbent, and the separation efficiency can be improved. Can be improved.
そして、吸着，洗浄，脱着の各工程を順次切替えるこ
とにより混合ガス中の特定成分の吸着分離を行う圧力変
動吸着分離装置に、このように塔径を塔長方向の途中で
段階的に変えた吸着塔30を用いると、吸着塔内部のガス
の流速を、吸着剤の種類に合うように、小径部31では速
く、大径部32では遅くすることができ、吸着工程の分離
効率及び洗浄工程の洗浄効率が向上する。Then, the column diameter is changed stepwise in the middle of the column length direction in the pressure fluctuation adsorption / separation apparatus which performs the adsorption / separation of a specific component in the mixed gas by sequentially switching the respective steps of adsorption, washing and desorption. When the adsorption tower 30 is used, the flow velocity of the gas inside the adsorption tower can be increased in the small diameter section 31 and reduced in the large diameter section 32 to match the type of the adsorbent. Cleaning efficiency is improved.
上記吸着塔30の小径部31と大径部32の径寸法は、前述
のごとく、混合ガスの組成に対応する吸着剤の種類に応
じて適宜に定めることができるが、通常は、同量の吸着
剤を充填することのできる直管状の吸着塔の径D0に対し
て、小径部31の塔径D1及び大径部32の塔径D2を、 0.7D0≦D1≦D0 …（1a） D0＜D2≦1.35D0 …（2a）の範囲、 好ましくは、下記式（１）及び式（２）に示す範囲に
形成する。As described above, the diameters of the small diameter portion 31 and the large diameter portion 32 of the adsorption tower 30 can be appropriately determined according to the type of the adsorbent corresponding to the composition of the mixed gas. relative to the diameter D 0 of the adsorption tower of the straight tube which can be filled with adsorbent, the column diameter D 2 of the tower diameter D 1 and the large-diameter portion 32 of the small diameter portion 31, 0.7D 0 ≦ D 1 ≦ D 0 (1a) D 0 <D 2 ≦ 1.35D 0 (2a), preferably in the range of the following formulas (1) and (2).
0.8D0≦D1≦D0 …（1b） D0＜D2≦1.25D0 …（2b） このような範囲で吸着塔30の小径部31と大径部32とを
形成することにより、小径部31におけるガスの流速U1及
び大径部32におけるガスの流速U2を、前記直管状の吸着
塔におけるガスの流速U0に対して、下記式（3a）及び式
（4a）の範囲、下記式（3b）及び式（4b）の範囲とする
ことができる。0.8D 0 ≦ D 1 ≦ D 0 (1b) D 0 <D 2 ≦ 1.25D 0 (2b) By forming the small diameter portion 31 and the large diameter portion 32 of the adsorption tower 30 in such a range, The gas flow velocity U 1 in the small diameter part 31 and the gas flow velocity U 2 in the large diameter part 32 are defined by the following equations (3a) and (4a) with respect to the gas velocity U 0 in the straight tubular adsorption tower. , The following formulas (3b) and (4b).
U0≦U1≦2.04U0 …（3a） 0.55U0≦U2＜U0 …（4a） U0≦U1≦1.56U0 …（3b） 0.64U0≦U2＜U0 …（4b） これにより、大径部32のガスの流速を、従来の吸着塔
に比べて0.64倍程度にまで小さくすることができ、吸着
工程の分離効率及び洗浄工程の洗浄効率を向上させるこ
とができする。U 0 ≦ U 1 ≦ 2.04U 0 … (3a) 0.55U 0 ≦ U 2 <U 0 … (4a) U 0 ≦ U 1 ≦ 1.56U 0 … (3b) 0.64U 0 ≦ U 2 <U 0 … ( 4b) Thereby, the flow velocity of the gas in the large diameter portion 32 can be reduced to about 0.64 times as compared with the conventional adsorption tower, and the separation efficiency in the adsorption step and the cleaning efficiency in the cleaning step can be improved. I do.
一方、上記範囲を越えて小径部31を小径にしすぎた
り、大径部32を大径にしすぎたりした場合には、吸着剤
に適したガスの流速が得られなくなって吸着効率が低下
したり、塔径を変化させる部分でのガスの流れが円滑に
行われず吸着や洗浄の効率が低下することがあり好まし
くない。On the other hand, if the diameter of the small diameter portion 31 is too small or the diameter of the large diameter portion 32 is too large beyond the above range, the gas flow rate suitable for the adsorbent cannot be obtained and the adsorption efficiency is reduced. In addition, the flow of gas in the portion where the tower diameter is changed is not smooth, and the efficiency of adsorption and washing may decrease, which is not preferable.
尚、吸着塔の形状は、吸着剤の積層数により長さ方向
の複数箇所に段階的に大径部を形成することができる。The shape of the adsorption tower can be such that a large-diameter portion can be formed stepwise at a plurality of positions in the length direction depending on the number of adsorbents stacked.
以上説明したように、本発明は、二種類以上の吸着剤
を積層充填する吸着塔の塔径を塔長方向の途中で吸着剤
層毎に段階的に変えたから、混合ガスの組成に対応する
吸着剤の種類に応じて最適なガスの流速を得ることがで
き、吸着効率や洗浄効率を向上させることができる。As described above, the present invention corresponds to the composition of the mixed gas because the tower diameter of the adsorption tower in which two or more kinds of adsorbents are stacked and packed is changed stepwise for each adsorbent layer in the middle of the tower length direction. An optimum gas flow rate can be obtained according to the type of the adsorbent, and the adsorption efficiency and the cleaning efficiency can be improved.
第１図は本発明の吸着塔の一実施例を示す正面図、第２
図及び第３図はそれぞれ従来の吸着塔を示す正面図であ
る。 30……吸着塔、31……小径部、32……大径部FIG. 1 is a front view showing an embodiment of the adsorption tower of the present invention, and FIG.
FIG. 3 and FIG. 3 are front views each showing a conventional adsorption tower. 30 …… Adsorption tower, 31 …… Small diameter part, 32 …… Large diameter part
Claims (1)
において、該吸着塔の塔径を塔長方向の途中で吸着剤層
毎に段階的に変えたことを特徴とする吸着塔。1. An adsorption tower in which two or more types of adsorbents are stacked and packed, wherein the diameter of the adsorption tower is changed stepwise for each adsorbent layer in the direction of the length of the tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140705A JP2969356B2 (en) | 1989-06-02 | 1989-06-02 | Adsorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140705A JP2969356B2 (en) | 1989-06-02 | 1989-06-02 | Adsorption tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH034915A JPH034915A (en) | 1991-01-10 |
| JP2969356B2 true JP2969356B2 (en) | 1999-11-02 |
Family
ID=15274814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1140705A Expired - Fee Related JP2969356B2 (en) | 1989-06-02 | 1989-06-02 | Adsorption tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2969356B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393622A (en) * | 1992-02-07 | 1995-02-28 | Matsushita Electric Industrial Co., Ltd. | Process for production of positive electrode active material |
| CN105126594A (en) * | 2015-09-17 | 2015-12-09 | 大唐环境产业集团股份有限公司 | Variable-diameter desulfurizing tower |
-
1989
- 1989-06-02 JP JP1140705A patent/JP2969356B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH034915A (en) | 1991-01-10 |
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