JPS63270522A - Regenerating method for adsorption column - Google Patents
Regenerating method for adsorption columnInfo
- Publication number
- JPS63270522A JPS63270522A JP62104276A JP10427687A JPS63270522A JP S63270522 A JPS63270522 A JP S63270522A JP 62104276 A JP62104276 A JP 62104276A JP 10427687 A JP10427687 A JP 10427687A JP S63270522 A JPS63270522 A JP S63270522A
- Authority
- JP
- Japan
- Prior art keywords
- adsorption
- temperature
- adsorption tower
- regeneration
- cooling
- 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
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 67
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 28
- 230000008929 regeneration Effects 0.000 claims abstract description 37
- 238000011069 regeneration method Methods 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000003463 adsorbent Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 16
- 230000005856 abnormality Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003795 desorption Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 20
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (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、空気分離ｇ！置を始めとするガス分離１贋ｉ
装置等の不純物除去用吸Ｓ塔に供り、特に加熱再生式吸
着塔の再生不良防止に好適な吸着塔の再生方法に関する
ものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides air separation g! The present invention relates to a method for regenerating an adsorption tower suitable for use in S absorption towers for removing impurities such as gas separation equipment such as gas separation equipment, and particularly suitable for preventing poor regeneration of thermal regeneration type adsorption towers.
従来の加熱再生方式吸着システムの再生不良防止の方法
としては、そのほとんどが間接的制御あるいは保護であ
った。その一般的な方法として採用さｎている再生ガス
流量低下輸出機構は、再生ガスヒーターの焼損防止のた
めのみではなく、規定温度の再生ガスを一定量以上流せ
ば吸着塔の再生は十分行なわｎるという考え方によるも
のである。また、吸着塔の再生ガスブロー出ロガス温度
を吸着塔再生状況の確認口゛安として、一定温度以上に
達すｎば再生加熱が正常に行なわれており、また吸着使
用前Ｉでに一定温度以下に低下していｎば、吸着開始時
４こ高温ガスがプロセスラインに涛ｎ込むことは無い等
の判断を行なう方法であった。なお、この種の装置とし
て関連するものには、例えば特開昭５２−６２１７７号
等が挙げらｎる。Most of the methods for preventing poor regeneration in conventional thermal regeneration adsorption systems have been indirect control or protection. The regeneration gas flow rate reduction export mechanism adopted as a general method is not only to prevent burnout of the regeneration gas heater, but also to ensure that if a certain amount of regeneration gas at a specified temperature is flowed, the adsorption tower will be regenerated sufficiently. This is based on the idea that In addition, the temperature of the regenerated gas blowing out of the adsorption tower is used as a reference for checking the regeneration status of the adsorption tower. This method was used to determine that if the temperature was lower than n, high-temperature gas would not flood into the process line at the start of adsorption. Incidentally, related devices of this type include, for example, Japanese Patent Application Laid-Open No. 52-62177.
上記従来の制御方法は間接的であり、また、異常の感知
が遅く、一部吸着性能の低下を生じてしまってから異常
を感知し、正常復旧までに時間を要することになったり
、吸着塔出口プロセスラインに影響を及ぼしてしまう等
の問題があった。The conventional control method described above is indirect, and the detection of abnormalities is slow, and the abnormality is detected only after some adsorption performance has deteriorated, and it takes time to restore normality, and the adsorption tower There were problems such as affecting the exit process line.
本発明の目的は、吸着塔の吸着・再生時間設定異常、加
熱・冷却不足等の再生不良要因を早期に感知し、他のプ
ロセスラインへの影響並びに再生不良トラブルを防止す
ることにある。An object of the present invention is to detect regeneration failure factors such as abnormal adsorption/regeneration time settings of an adsorption tower and insufficient heating/cooling at an early stage, and to prevent effects on other process lines and regeneration failure troubles.
〔問題点を解決するための手段〕
上記目的は、吸着塔内の吸着剤並びに通過ガス１度を管
理するための温度計を設け、吸着剤自身が正常に加熱φ
冷却されていることを確認することにより達成さｎる。[Means for solving the problem] The above purpose is to install a thermometer to control the adsorbent in the adsorption tower and the gas passing through it, and to ensure that the adsorbent itself is properly heated φ.
This is accomplished by making sure it is cooled.
吸着塔の再生（加熱・冷却）運転時ｌこおける吸着塔内
吸着剤温度は、その位置と経過時間により第２図のよう
に変化する。また、再生後の吸着が開始さｎると第３図
の如く変化する。第２図、第３図において、ＴＨは再生
加熱潤度、ＴＬは冷却ガスおよび通過プロセスガス潤度
を示す。また、ｔｌ ｔｎは再生加熱開始後または吸着
使用開始後からの経過時間を示し、各曲線は経過時間１
ｎ 後における吸着塔内吸着剤層の温度分布を示す。The temperature of the adsorbent in the adsorption tower during regeneration (heating/cooling) operation of the adsorption tower changes depending on its position and elapsed time as shown in FIG. 2. Further, when the adsorption after regeneration starts, changes occur as shown in FIG. 3. In FIGS. 2 and 3, TH indicates the regeneration heating moisture content, and TL indicates the cooling gas and passing process gas moisture content. In addition, tl tn indicates the elapsed time from the start of regeneration heating or the start of adsorption use, and each curve represents the elapsed time 1
The temperature distribution of the adsorbent layer in the adsorption tower after n is shown.
本発明では、吸着塔再生不良要因に対し、吸着塔内の温
度測定点Ｌ８の位置に設けた温度計償点によりおのおの
次の動作を行なう。In the present invention, the following actions are performed in response to the cause of poor regeneration of the adsorption tower using a temperature measurement point provided at the temperature measurement point L8 in the adsorption tower.
（１） 加熱不足防止
再生加熱時間終了時、温度測定点Ｌ３ ｉこおいて規定
温度１８以上に加熱されていない場合は、加熱不足の警
報を出すと共に、加熱時間の延長あるいは吸着塔切替制
御装置の歩進が行なわｎないようにする。(1) Insufficient heating prevention At the end of the regeneration heating time, if the temperature measurement point L3 is not heated to the specified temperature 18 or higher, an insufficient heating alarm is issued and the heating time is extended or the adsorption tower switching control device is activated. Prevent the steps from occurring.
（２） 冷却不足防止
再生冷却時間終了時、温度測定点Ｌ８において規定湯度
Ｔｓ以下に冷却されていない場合は。(2) Preventing insufficient cooling If the hot water temperature at temperature measurement point L8 has not been cooled to below the specified temperature Ts at the end of the regeneration cooling time.
冷却不足の警報を出すと共に、冷却時間の延長あるいは
吸着塔切替制御装置の歩進が行なわれないようにする。A warning of insufficient cooling is issued, and the cooling time is not extended or the adsorption tower switching control device is prevented from advancing.
１３）切替タイマー誤設定の防止
加熱・冷却不足防止措置によってほとんどの再生不良要
因な検出できるが、極端なタイマー誤設定があった場合
、吸着使用開始後塩度の高いプロセスガスが吸着塔出口
に流れることかあり得るため、吸着塔内温度上昇を事前
に感知して警報を発すると共に、必要に応じて吸着塔出
口弁を緊急閉止させる。13) Prevention of incorrect setting of switching timer Most causes of regeneration failure can be detected by preventing insufficient heating and cooling, but if there is an extreme incorrect setting of the timer, process gas with high salt content may reach the outlet of the adsorption tower after the start of adsorption use. Since there is a possibility that the adsorption tower may flow, the rise in temperature inside the adsorption tower is sensed in advance and an alarm is issued, and the adsorption tower outlet valve is urgently closed as necessary.
稍
以下１本発旧の一実施例を第１図により説明する。本実
施例は、空気分離装置の空気前処理装置等で使用する自
動切替運転吸着塔の場合である。An embodiment of the present invention in which only one part is generated will be described below with reference to FIG. This example is a case of an automatically switching operation adsorption tower used in an air pretreatment device of an air separation device.
プロセスガスである空気は、空気人口弁１１Ａを通り吸
着塔１で水分および炭酸ガスを吸着除去さｎた債、空気
出口弁１２Ａを通り空気分離装置本体（図示せず）に送
入さｎている。一方、吸着塔２は再生ガスによる脱着再
生が行なわｎでおり、再生加熱時は、再生加熱器入口弁
１５を通り再生加熱器３で所定の温度まで加熱さｎた再
生ガスが、再生ガス人口弁１３８７に通り吸着塔２に入
る。吸着塔２で水分および炭酸ガスを脱着させた再生ガ
スは、再生ガス出口弁１４ Ｂを通り大気に放出さｎる
。また、再生加熱完了後の冷却時においては、再生加熱
器人口弁巧は閉止さｎ、バイパス弁１６を通りだ再生ガ
スがそのまま吸着塔２に送入され冷却を行なう。なお、
二〇らの弁は自動操作弁で、その開閉操作は再生加熱器
０Ｎ−ＯＦＦを含めてすべて切替制御装置（図示せず）
によって自動的に行なわｎる。Air, which is a process gas, passes through an air population valve 11A, adsorbs and removes moisture and carbon dioxide in an adsorption tower 1, and then passes through an air outlet valve 12A and is sent to the air separation device main body (not shown). There is. On the other hand, the adsorption tower 2 performs desorption and regeneration using the regeneration gas, and during regeneration heating, the regeneration gas that passes through the regeneration heater inlet valve 15 and is heated to a predetermined temperature in the regeneration heater 3 is heated to the regeneration gas population. It passes through valve 1387 and enters adsorption tower 2. The regenerated gas from which moisture and carbon dioxide have been desorbed in the adsorption tower 2 passes through the regenerated gas outlet valve 14B and is released into the atmosphere. Further, during cooling after completion of regeneration heating, the regeneration heater artificial valve is closed, and the regeneration gas that has passed through the bypass valve 16 is directly fed into the adsorption tower 2 for cooling. In addition,
The twenty valves are automatically operated valves, and their opening/closing operations, including the ON/OFF of the regenerative heater, are all controlled by a switching control device (not shown).
This is done automatically by
゛吸着塔１． ２内に設けられた温度計４，５の信号は
、切替制御装置の切替歩道条件に組み込まｎており、再
生加熱完了時に温度計４，５より規定温度（例えば１２
０℃）以上に達しているという信号が無い場合は加熱不
足警報を発すると共に。゛Adsorption tower 1. The signals from the thermometers 4 and 5 installed in the thermometer 2 are incorporated into the switching sidewalk conditions of the switching control device, and the thermometers 4 and 5 indicate a specified temperature (for example, 12
If there is no signal indicating that the temperature has reached 0°C or higher, an insufficient heating alarm will be issued.
加熱工程延長を自動的に行なう。また、冷却売了時にお
いても温度計４，５により規定潤度（例えば４０℃）以
下ｉこ冷却さｎていなけｎば冷却不足警報を発すると共
に、次の吸着工程に移行せず、冷却工程の延長を自動的
に行なう。さらに、温度肝４，５は、吸着使用中におい
ても規定２Ｉｉ度（例えば４０℃）以上に上昇した場合
、空気出口弁１２Ａ、１２Ｂ以降のプロセスラインを保
護するために空気出口弁１２Ａ、１２Ｂを緊急閉止させ
る。これにより、吸着塔異常あるいは、極端な冷却時間
過少設定等による冷却不足尋こよって高温吸着剤層が残
存していても、吸着塔出口以降のプロセスラインに高温
ガスが流ｎることを未然に防止できるという効果もある
。Automatically extends the heating process. In addition, even when the cooling is finished, if the thermometers 4 and 5 have not cooled down to a specified moisture level (for example, 40°C), an insufficient cooling warning is issued, and the process does not proceed to the next adsorption process. will be automatically extended. Furthermore, if the temperature points 4 and 5 rise above the specified 2Ii degree (for example, 40 degrees Celsius) even during adsorption use, the air outlet valves 12A and 12B are closed to protect the process line after the air outlet valves 12A and 12B. Emergency close. This prevents high-temperature gas from flowing into the process line after the outlet of the adsorption tower even if a high-temperature adsorbent layer remains due to an abnormality in the adsorption tower or insufficient cooling due to extremely short cooling time settings. It also has the effect of preventing it.
本発明によｎば、（１）吸着塔内吸着剤自身の温度を測
定し、加熱温度を管理しているので加熱不足による再生
不良を起こすことはない。（２）同様に冷却温度も管理
しており、冷却不足により高温ガスを吸着塔出口以降の
プロセスラインに送入することはない。（３）吸着塔切
替装置のタイマー誤設定により、温度測定位置までは冷
却さｎても、また吸収塔内の一部に高温領域が残ってい
る場合におい銘
ても吸着塔挿口に高温ガスが流ｎ出る前に防止できる。According to the present invention, (1) the temperature of the adsorbent itself in the adsorption tower is measured and the heating temperature is controlled, so there is no possibility of poor regeneration due to insufficient heating. (2) Cooling temperature is also controlled in the same way, and high-temperature gas will not be sent into the process line after the adsorption tower outlet due to insufficient cooling. (3) Due to incorrect setting of the timer of the adsorption tower switching device, even if the temperature measurement position has been cooled down, or even if a high temperature area remains in a part of the absorption tower, high temperature gas may enter the adsorption tower inlet. can be prevented before it spills out.
（４）吸着塔再生不良を、吸着性能に影響を及ぼす前に
感知することができ、全装置を停止することな（短時間
で正常に復帰させることができる。(4) Adsorption tower regeneration failure can be detected before it affects adsorption performance, and can be restored to normal status in a short time without stopping the entire device.
等の効果がある。There are other effects.
第１図は本発明の一実施例を示す吸着塔回りのおける吸
着塔内潤度分布の概念図である。
１、 ２・・・・・・吸着塔％３・・・・・・再生加熱
器、４，５・・・・・・ｌｌｉｌ度計、１１〜１６・間
・弁代理人 弁理士 小 川 勝 男
オ／ｌ￥Ｉ
Ｊ−−−４法加熱器
４．５−一温崖訂
４２図
第３図
７５セスガスメＵ−オＨFIG. 1 is a conceptual diagram of the moisture distribution within the adsorption tower around the adsorption tower showing an embodiment of the present invention. 1, 2... Adsorption tower% 3... Regeneration heater, 4, 5... lil degree meter, 11 to 16, time, patent attorney Masaru Ogawa Man O/l￥I J---4 method heater 4.5-Ichion cliff edition 42 figure 3 figure 75 Seth Gasme U-OH
Claims (1)
環使用される加熱再生式吸着塔の再生方法において、吸
着塔内の吸着剤の温度を検出し、吸着剤の温度が前記各
工程における規定温度より外れた場合、異常信号を発信
させることを特徴とする吸着塔の再生方法。 ２、吸着塔の加熱再生工程終了時に吸着剤温度が規定温
度以下の場合、異常信号を発信させる特許請求の範囲第
１項記載の吸着塔の再生方法。 ３、吸着塔の冷却工程終了時に吸着剤温度が規定温度以
上の場合、異常信号を発信させる特許請求の範囲第１項
記載の吸着塔の再生方法。 ４、吸着塔の吸着工程において、吸着剤温度が規定温度
以上に上昇すると、異常信号を発信させる特許請求の範
囲第１項記載の吸着塔の再生方法。 ５、前記異常信号により吸着塔の前記各工程を調整する
特許請求の範囲第２項または第３項記載の吸着塔の再生
方法。[Claims] 1. In a method for regenerating a thermally regenerated adsorption tower in which an adsorption process, a thermal regeneration process, a cooling process, and an adsorption process are used in cycles, the temperature of the adsorbent in the adsorption tower is detected, and the temperature of the adsorbent is determined. A method for regenerating an adsorption tower, characterized in that an abnormality signal is transmitted when the temperature deviates from the specified temperature in each of the steps. 2. The method for regenerating an adsorption tower according to claim 1, wherein an abnormality signal is transmitted if the adsorbent temperature is below a specified temperature at the end of the heating regeneration process of the adsorption tower. 3. The method for regenerating an adsorption tower according to claim 1, in which an abnormality signal is transmitted if the adsorbent temperature is higher than a specified temperature at the end of the adsorption tower cooling step. 4. The method for regenerating an adsorption tower according to claim 1, wherein an abnormality signal is transmitted when the adsorbent temperature rises above a specified temperature in the adsorption step of the adsorption tower. 5. The method for regenerating an adsorption tower according to claim 2 or 3, wherein each step of the adsorption tower is adjusted based on the abnormal signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104276A JPS63270522A (en) | 1987-04-30 | 1987-04-30 | Regenerating method for adsorption column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104276A JPS63270522A (en) | 1987-04-30 | 1987-04-30 | Regenerating method for adsorption column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63270522A true JPS63270522A (en) | 1988-11-08 |
Family
ID=14376403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62104276A Pending JPS63270522A (en) | 1987-04-30 | 1987-04-30 | Regenerating method for adsorption column |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63270522A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296017A (en) * | 1991-05-28 | 1994-03-22 | Mitsui Toatsu Chemicals, Inc. | Method and apparatus for concentrating chlorine gas |
| US20120042689A1 (en) * | 2010-08-18 | 2012-02-23 | Uop, Llc | Process for purifying natural gas and regenerating one or more adsorbers |
| WO2020261375A1 (en) * | 2019-06-25 | 2020-12-30 | 日揮グロ－バル株式会社 | Method for operating adsorption device |
-
1987
- 1987-04-30 JP JP62104276A patent/JPS63270522A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296017A (en) * | 1991-05-28 | 1994-03-22 | Mitsui Toatsu Chemicals, Inc. | Method and apparatus for concentrating chlorine gas |
| US20120042689A1 (en) * | 2010-08-18 | 2012-02-23 | Uop, Llc | Process for purifying natural gas and regenerating one or more adsorbers |
| WO2012024135A3 (en) * | 2010-08-18 | 2012-05-31 | Uop Llc | Process for purifying natural gas and regenerating one or more adsorbers |
| US8337593B2 (en) | 2010-08-18 | 2012-12-25 | Uop Llc | Process for purifying natural gas and regenerating one or more adsorbers |
| CN102958583A (en) * | 2010-08-18 | 2013-03-06 | 环球油品公司 | Process for purifying natural gas and regenerating one or more adsorbers |
| CN102958583B (en) * | 2010-08-18 | 2014-09-17 | 环球油品公司 | Process for purifying natural gas and regenerating one or more adsorbers |
| WO2020261375A1 (en) * | 2019-06-25 | 2020-12-30 | 日揮グロ－バル株式会社 | Method for operating adsorption device |
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