JPH06327972A - Regenerating method of used active alumina - Google Patents
Regenerating method of used active aluminaInfo
- Publication number
- JPH06327972A JPH06327972A JP14553293A JP14553293A JPH06327972A JP H06327972 A JPH06327972 A JP H06327972A JP 14553293 A JP14553293 A JP 14553293A JP 14553293 A JP14553293 A JP 14553293A JP H06327972 A JPH06327972 A JP H06327972A
- Authority
- JP
- Japan
- Prior art keywords
- activated alumina
- adsorbent
- active alumina
- alumina
- used active
- 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
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、石油精製における吸着
剤等として使用された使用済み活性アルミナの再生方法
に関するものである。FIELD OF THE INVENTION The present invention relates to a method for regenerating used activated alumina used as an adsorbent in petroleum refining.
【０００２】[0002]
【従来の技術】活性アルミナは、石油精製吸着剤精製法
において、石油留分中の不純物（主として塩酸および塩
素）を吸着除去するために使用されている。石油精製吸
着剤精製法の吸着剤として使用された活性アルミナの塩
酸の吸着量は９〜１０％であり、このほかにトルエン、
キシレン等の有機溶剤が付着していることが多い。吸着
剤としての活性アルミナの寿命は、使用目的によっても
異なるが、通常半年乃至１年である。BACKGROUND OF THE INVENTION Activated alumina is used in a petroleum refining adsorbent refining method to adsorb and remove impurities (mainly hydrochloric acid and chlorine) in petroleum fractions. The adsorbed amount of hydrochloric acid of activated alumina used as an adsorbent in the petroleum refinery adsorbent refining method is 9 to 10%.
Organic solvents such as xylene are often attached. The life of activated alumina as an adsorbent varies depending on the purpose of use, but is usually from half a year to one year.
【０００３】上記石油精製等で吸着剤として使用された
使用済みの活性アルミナは、従来、産業廃棄物として処
理されていたが、有害な物質を含んでいるため、環境汚
染のおそれがあった。また、使用済みの活性アルミナを
そのまま廃棄するのは、省資源の見地からも好ましいこ
とではなかった。The used activated alumina used as an adsorbent in petroleum refining and the like has conventionally been treated as industrial waste, but since it contains harmful substances, it may cause environmental pollution. Further, it is not preferable to discard the used activated alumina as it is from the viewpoint of resource saving.
【０００４】[0004]
【発明が解決しようとする課題】そこで本発明は、使用
済みの活性アルミナをリサイクル使用できるようにする
ための効果的な再生方法を提供することを課題としてい
る。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an effective regeneration method for recycling used activated alumina.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明は次のような構成を採用した。すなわち、本
発明にかかる活性アルミナの再生方法は、使用済み活性
アルミナを７００度Ｃ以下の温度で焙焼したのち、塩化
アンモニウム、硝酸アンモニウムもしくは硫酸アンモニ
ウムの溶液で洗浄し、７００度Ｃ以下の温度で乾燥する
ことを特徴としている。In order to solve the above problems, the present invention employs the following configurations. That is, in the method for regenerating activated alumina according to the present invention, used activated alumina is roasted at a temperature of 700 ° C. or lower, washed with a solution of ammonium chloride, ammonium nitrate or ammonium sulfate, and dried at a temperature of 700 ° C. or lower. It is characterized by doing.
【０００６】吸着精製用活性アルミナ粒状品（球形）
は、アルミナ（Ａｌ2 Ｏ3 ）純度が高く、成分が均一で
ある。そして、吸着性能を向上させるため、マクロポア
が多いので、細孔容積および比表面積が大きいのが特徴
である。したがって、使用済み活性アルミナは多量の吸
着物を含んでいる。Activated alumina granules for adsorption purification (spherical)
Has a high alumina (Al 2 O 3 ) purity and a uniform component. Further, in order to improve the adsorption performance, since there are many macropores, the feature is that the pore volume and the specific surface area are large. Therefore, the used activated alumina contains a large amount of adsorbate.
【０００７】この再生に際しては、まず、付着している
トルエン、キシレン等を除去するため焙焼を行う。この
焙焼温度は、活性アルミナの特徴を損なわない温度、す
なわち７００度Ｃ以下、好ましくは５００〜６００度Ｃ
である。焙焼時間は数時間で充分であり、通常は３時間
程度である。[0007] In this regeneration, first, roasting is performed to remove the attached toluene, xylene and the like. The roasting temperature is a temperature at which the characteristics of activated alumina are not impaired, that is, 700 ° C or lower, preferably 500 to 600 ° C.
Is. The roasting time is sufficient for several hours, usually about 3 hours.
【０００８】焙焼を終えたアルミナは、塩素、ナトリウ
ム等を除去するため、塩化アンモニウム、硝酸アンモニ
ウム、硫酸アンモニウム等のアンモニア塩類溶液で洗浄
を行う。この洗浄は、例えば容器中にアルミナを入れ、
その中に洗浄溶液を入れて撹拌しながら洗浄する方法で
行われる。The alumina which has been roasted is washed with an ammonia salt solution such as ammonium chloride, ammonium nitrate or ammonium sulfate in order to remove chlorine and sodium. For this cleaning, for example, put alumina in a container,
It is carried out by a method in which a washing solution is put therein and washed with stirring.
【０００９】塩類の溶液による洗浄を終えたアルミナ
は、水分除去のため乾燥を行う。この乾燥は、活性アル
ミナの特徴を損なわない温度である７００度Ｃ以下の温
度、好ましくは２００〜３００度Ｃで加熱することによ
り行う。乾燥に要する時間は数時間であり、通常は８時
間程度である。The alumina which has been washed with the salt solution is dried to remove water. This drying is performed by heating at a temperature of 700 ° C. or less, which is a temperature at which the characteristics of activated alumina are not impaired, preferably 200 to 300 ° C. The time required for drying is several hours, usually about 8 hours.
【００１０】このようにして再生活性アルミナが得られ
る。この再生活性アルミナは、石油精製吸着剤精製法の
吸着剤として繰り返し使用することができるほか、例え
ば、ドライクリ−ニング排水中のテトラ、トリクロロエ
チレン等の有機溶媒の吸着除去等に使用することができ
る。In this way, regenerated activated alumina is obtained. The regenerated activated alumina can be repeatedly used as an adsorbent in a petroleum refinery adsorbent refining method, and can also be used, for example, for adsorbing and removing an organic solvent such as tetra or trichlorethylene in a dry cleaning wastewater.
【００１１】[0011]
【実施例】図１のフロ−チャ−トにしたがって使用済み
活性アルミナの再生処理を行った。まず、石油精製に吸
着剤として使用した使用済み活性アルミナ１．３７６ｋ
ｇをトレイに入れ、焙焼炉を用いて大気中で５００〜６
００度Ｃで３時間焙焼を行った。EXAMPLE A used activated alumina was regenerated according to the flowchart of FIG. First, used activated alumina used as an adsorbent for petroleum refining 1.376k
g in a tray and using a roasting furnace in the atmosphere 500 to 6
Roasting was carried out at 00 ° C for 3 hours.
【００１２】得られた焙焼品（１，１００ｋｇ）を洗浄
塔に充填し、０．２〜０．５モルの硝酸アンモニウム溶
液１０ｍ3 を上から流下させて洗浄を行った。これによ
り不純物が除去されたので、引き続き乾燥を行った。こ
の乾燥は、洗浄したアルミナを皿に入れ、オ−ブンで２
００〜３００度Ｃで８時間乾燥することにより行った。
なお、流動乾燥も可能であった。この再生処理前後の活
性アルミナの組成と比表面積を表１に示す。The roasted product (1,100 kg) thus obtained was charged into a washing tower, and 10 m 3 of a 0.2 to 0.5 mol ammonium nitrate solution was allowed to flow down from the top for washing. As a result, impurities were removed, so that the product was dried. This drying is done by placing washed alumina in a dish and
It was carried out by drying at 00 to 300 ° C. for 8 hours.
Fluidized drying was also possible. Table 1 shows the composition and specific surface area of the activated alumina before and after the regeneration treatment.
【００１３】[0013]
【表１】 [Table 1]
【００１４】同表からわかる通り、このようにして得ら
れた再生活性アルミナは、成分的にも比表面積の点でも
新品の活性アルミナと比べて遜色がなく、石油精製等の
吸着剤として充分再使用することができた。As can be seen from the table, the regenerated activated alumina thus obtained is comparable in terms of composition and specific surface area to new activated alumina, and is sufficiently regenerated as an adsorbent for petroleum refining and the like. Could be used.
【００１５】[0015]
【発明の効果】以上に説明したように、本発明にかかる
使用済み活性アルミナの再生法によれば、吸着剤として
の使用により不純物を多量に含んでいる使用済み活性ア
ルミナを、簡単な処理で殆ど新品同様の性能に再生でき
るので、従来、産業廃棄物としてそのまま廃棄していた
使用済み活性アルミナを有効に再利用することが可能と
なり、環境汚染防止及び資源リサイクルの観点からきわ
めてすぐれたものとなった。As described above, according to the method for regenerating used activated alumina according to the present invention, the used activated alumina containing a large amount of impurities due to its use as an adsorbent can be treated with a simple treatment. Since it can be regenerated to almost the same performance as a new product, it is possible to effectively reuse the used activated alumina that was conventionally discarded as industrial waste, which is extremely excellent from the viewpoint of environmental pollution prevention and resource recycling. became.
【図１】本発明の一実施例を表すフロ−チャ−トであ
る。FIG. 1 is a flow chart showing an embodiment of the present invention.
Claims (1)
の温度で焙焼したのち、塩化アンモニウム、硝酸アンモ
ニウムもしくは硫酸アンモニウムの溶液で洗浄し、７０
０度Ｃ以下の温度で乾燥することを特徴とする使用済み
アルミナの再生方法。1. A used activated alumina is roasted at a temperature of 700 ° C. or lower and then washed with a solution of ammonium chloride, ammonium nitrate or ammonium sulfate, and 70
A method for regenerating used alumina, which comprises drying at a temperature of 0 ° C. or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14553293A JPH06327972A (en) | 1993-05-24 | 1993-05-24 | Regenerating method of used active alumina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14553293A JPH06327972A (en) | 1993-05-24 | 1993-05-24 | Regenerating method of used active alumina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06327972A true JPH06327972A (en) | 1994-11-29 |
Family
ID=15387385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14553293A Pending JPH06327972A (en) | 1993-05-24 | 1993-05-24 | Regenerating method of used active alumina |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06327972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020101292A1 (en) * | 2018-11-12 | 2020-05-22 | 서울대학교산학협력단 | Method for regenerating alumina |
| CN111282544A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Adsorbent for removing oxazole from acrylonitrile, preparation method and regeneration method |
-
1993
- 1993-05-24 JP JP14553293A patent/JPH06327972A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020101292A1 (en) * | 2018-11-12 | 2020-05-22 | 서울대학교산학협력단 | Method for regenerating alumina |
| CN111282544A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Adsorbent for removing oxazole from acrylonitrile, preparation method and regeneration method |
| CN111282544B (en) * | 2018-12-07 | 2023-12-26 | 中国石油天然气股份有限公司 | Adsorbent for removing oxazole in acrylonitrile, preparation method and regeneration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5460643A (en) | Method of regenerating mercury adsorption means | |
| US3721066A (en) | Process for recovery of acid gases | |
| US5346535A (en) | Use of crystalline molecular sieves containing charged octahedral sites in removing volatile organic compounds from a mixture of the same | |
| JP2020506049A (en) | Adsorbent and manufacturing method | |
| CN103723785A (en) | Method adopting lanthanum modified attapulgite to remove fluorinion in water | |
| JPH11147708A (en) | Wet type reutilization of used impregnated carbon by extraction of organic solvent | |
| JP2009226265A (en) | Water selectivity adsorbent and manufacturing method | |
| DE59904206D1 (en) | Process for cleaning flue gas | |
| JPH06327972A (en) | Regenerating method of used active alumina | |
| CN100525899C (en) | Regeneration of rare-earth adsorbent after sewage denitrifying and dephosphor | |
| CN112973623A (en) | Application of EAB molecular sieve in separation of methane/carbon dioxide | |
| JP3672855B2 (en) | Fluorine adsorbent and fluorine removal method using the same | |
| SU1161157A1 (en) | Method of cleaning gases from mercury | |
| JP2978251B2 (en) | Method for removing mercury from liquid hydrocarbons | |
| JP2002211912A (en) | Method for modifying activated carbon, modified activated carbon and adsorbent using the same | |
| SU1745285A1 (en) | Method of purification of organic solvents | |
| JPH02122885A (en) | Process for removing ammonia in water | |
| JPH0410368B2 (en) | ||
| JPH04267926A (en) | Method for separating ammonia from gas particularly exhaust gas produced in combustion process | |
| TW546161B (en) | Method for regeneration of exhaust absorbing and treating system | |
| JPH06196464A (en) | Manufacture of semiconductor cleaning diethyl carbonate | |
| RU2081824C1 (en) | Method for reactivation of activated coal | |
| JP2016112535A (en) | Method for generating hydrogen arsenide adsorption active carbon | |
| JP3826337B2 (en) | Method for producing activated carbon adsorbent | |
| RU96116479A (en) | SORBENT FOR REMOVAL OF ATEROGENIC LIPOPROTEIDS FROM BLOOD AND METHOD FOR ITS PRODUCTION |