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JPH03229682A - Recovery of sludge in oil tank - Google Patents

Recovery of sludge in oil tank

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Publication number
JPH03229682A
JPH03229682AJP2025257AJP2525790AJPH03229682AJP H03229682 AJPH03229682 AJP H03229682AJP 2025257 AJP2025257 AJP 2025257AJP 2525790 AJP2525790 AJP 2525790AJP H03229682 AJPH03229682 AJP H03229682A
Authority
JP
Japan
Prior art keywords
sludge
oil
hot water
oil tank
water
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.)
Granted
Application number
JP2025257A
Other languages
Japanese (ja)
Other versions
JP2835759B2 (en
Inventor
Yoshinori Yotsumoto
四元 義憲
Hiroyoshi Nojima
野島 弘義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiho Kogyo Co Ltd
Original Assignee
Taiho Kogyo Co Ltd
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Publication date
Application filed by Taiho Kogyo Co LtdfiledCriticalTaiho Kogyo Co Ltd
Priority to JP2025257ApriorityCriticalpatent/JP2835759B2/en
Publication of JPH03229682ApublicationCriticalpatent/JPH03229682A/en
Application grantedgrantedCritical
Publication of JP2835759B2publicationCriticalpatent/JP2835759B2/en
Anticipated expirationlegal-statusCritical
Expired - Fee Relatedlegal-statusCriticalCurrent

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Abstract

PURPOSE:To efficiently remove the sludge in an oil tank and to easily perform the oil-water separation of the sludge-containing hot water discharged from the oil tank by adding a demulsifier and chloride to the hot water injected in the oil tank. CONSTITUTION:Hot water whose specific gravity is increased by the addition of a demulsifier A (e.g. polyoxyethylene alkylphenylformaldehyde condensate) and chloride B (e.g. CaCl2) is injected in an oil tank 3 under high pressure by nozzles 4 to bring sludge C to a fluidized state. The fluidized sludge is discharged out of the oil tank 3 along with the hot water to be separated from the hot water. That is, the sludge is stored in an oil recovery tank 9 as oil and the hot water is again injected in the oil tank 3 under high pressure. As a result, the sludge in the oil tank can be efficiently removed and the oil-sludge separation of the sludge-containing hot water discharged from the oil tank can be easily performed.

Description

Translated fromJapanese

【発明の詳細な説明】〈産業上の利用分野〉本発明は、大型原油タンク等の油槽内の底部に貯留する
スラッジを、比重を大きくした温水により流動化して油
槽外に排出し、回収する様にしたことを特徴とする油槽
内のスラッジを回収する方法に関するものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention fluidizes sludge stored at the bottom of an oil tank such as a large crude oil tank using hot water with increased specific gravity, and discharges the sludge to the outside of the oil tank and collects the sludge. The present invention relates to a method for recovering sludge in an oil tank, which is characterized by the following.

〈従来の技術〉大型原油タンクは、その大きさにより消防法で定期間ご
との検査を義務づけられており、検査前にタンク内の清
掃が実施されている。
<Prior Art> Due to its size, large crude oil tanks are required to be inspected at regular intervals under the Fire Service Act, and the inside of the tank is cleaned before inspection.

上記した大型原油タンクは、長期間経過すると底部に固
形状油成分のスラッジが堆積する。
After a long period of time, solid oil component sludge accumulates at the bottom of the large crude oil tank described above.

上記したスラッジは、タンクの内容積を減少させたり、
またはタンクを保守点検する場合に支障を生じたり、タ
ンク内に貯留されているオイルを変質させることがある
ので回収・除去しなればならない。
The sludge mentioned above may reduce the internal volume of the tank,
Otherwise, it may cause trouble when maintaining and inspecting the tank, or it may alter the quality of the oil stored in the tank, so it must be collected and removed.

従来より、上記したスラッジを回収・除去するためには
、特公昭63−16191号公報に記載されたように、
別タンクより配管ラインを設けて洗浄しようとするタン
ク内のスラッジに加圧油を噴射し、油の噴射圧によりス
ラッジを打砕して油中に分散、溶解させることにより堆
積スラッジを崩壊させるとともに、流動化したスラッジ
をポンプ等でタンクの外部に排出する共油洗浄方法が採
用されている。
Conventionally, in order to collect and remove the above-mentioned sludge, as described in Japanese Patent Publication No. 63-16191,
A piping line is installed from a separate tank and pressurized oil is injected onto the sludge in the tank to be cleaned, and the oil injection pressure crushes the sludge and disperses and dissolves it in the oil, thereby collapsing the accumulated sludge. A common oil cleaning method is adopted in which the fluidized sludge is discharged to the outside of the tank using a pump or the like.

しかし、上記した共油洗浄方法では、油槽内のスラッジ
を十分に除去した後であっても内部に液状の油が残存し
、該油分が保守点検作業に支障を生ずるので、タンク内
の油をできるだけ排出した後、温水で再度洗浄して油分
を除去する必要がある。
However, in the above-mentioned co-oil cleaning method, even after the sludge in the oil tank has been sufficiently removed, liquid oil remains inside the tank, and this oil interferes with maintenance and inspection work. After draining as much as possible, it is necessary to wash again with warm water to remove the oil.

また、上記した共油洗浄方法による高圧噴射の加圧油に
代えて温水を使用する方法としては、例えば特公昭61
−29997号公報に記載される方法があり、この方法
によればスラッジを温水の略水平方向に噴射して流動化
し、タンク外へ排出させることができるので、1工程で
スラッジを除去することができる。
In addition, as a method of using hot water instead of high-pressure injection pressurized oil according to the above-mentioned co-oil cleaning method, for example,
There is a method described in Japanese Patent Publication No. 29997. According to this method, sludge can be fluidized by injecting hot water in a substantially horizontal direction and can be discharged outside the tank, so sludge can be removed in one step. can.

〈発明が解決しようとする課題〉しかしながら、上記した温水によりスラッジを打砕し、
タンク外へ排出するには、極めて大量の温水と時間が掛
るものであり、特に長期間に堆積した固形状の付着スラ
ッジを除去するには、むしろ前記した共油洗浄方法の方
が経済的にも効率が良好である。
<Problem to be solved by the invention> However, when the sludge is crushed with the hot water described above,
It takes an extremely large amount of hot water and a lot of time to drain it out of the tank, so the above-mentioned co-oil cleaning method is more economical, especially in order to remove solid adhering sludge that has accumulated over a long period of time. The efficiency is also good.

また、上記した温水による方法では、温水の噴射による
スラッジの打砕時に、スラッジと水とが乳化してしまう
ので、油槽から排出される混合液の油水分離処理が大き
な問題となっていた。
Furthermore, in the hot water method described above, when the sludge is crushed by hot water injection, the sludge and water emulsify, so the oil-water separation process of the mixed liquid discharged from the oil tank has been a major problem.

したがって、短時間にスラッジを打砕してタンク外に排
出することができ、且つ排出される混合液の油水分離処
理をも短時間で確実に行うことのできる方法が希求され
ていた。
Therefore, there has been a need for a method that can crush sludge and discharge it out of the tank in a short period of time, and can also reliably perform oil-water separation treatment of the discharged mixed liquid in a short period of time.

〈課題を解決するための手段〉本発明は、上記に鑑み提案されたもので、油槽内に抗乳
化剤と塩化物とを添加した温水を高圧噴射させてスラッ
ジを流動状態にし、流動化したスラッジを温水と共に油
槽外に排出してスラッジと温水とを分離し、温水を再度
油槽内に高圧噴射させるようにしたことを特徴とする油
槽内のスラッジを回収する方法に関するものである。
<Means for Solving the Problems> The present invention was proposed in view of the above-mentioned problems, and the present invention is made by jetting hot water containing a demulsifier and chloride into an oil tank at high pressure to make the sludge into a fluidized state. The present invention relates to a method for recovering sludge in an oil tank, characterized in that the sludge and hot water are separated from each other by being discharged to the outside of the oil tank together with hot water, and the hot water is again injected into the oil tank at high pressure.

本発明に使用される抗乳化剤は、水とスラッジとの乳化
を破壊する作用を有するものであり、静置した油水混合
液のスラッジの浮遊分離を促進するものである。また、
油槽内の側壁面或いは底壁面に付着して堆積したスラッ
ジに対しては浸透作用を有し、付着するスラッジの剥離
を促進することができ、さらには、流動化されて油水混
合状態となっている液内のスラッジが油槽壁面や排出管
内壁に再付着するのを抑制するものである。
The demulsifier used in the present invention has the effect of destroying the emulsification of water and sludge, and promotes the floating separation of sludge from a stationary oil-water mixture. Also,
It has a penetrating effect on the sludge that has adhered and accumulated on the side wall surface or bottom wall surface in the oil tank, and can promote the peeling off of the adhered sludge, and furthermore, it is fluidized and becomes an oil-water mixed state. This prevents the sludge in the liquid from re-adhering to the walls of the oil tank and the inner walls of the discharge pipe.

上記した抗乳化剤としては、ポリオキシエチレンアルキ
ルフェニルホルムアルデヒド縮合物および/またはポリ
オキシエチレン・ポリオキシブロビレンブロックコボリ
マーが有効であり、なかでも下記の構造式で表されるポ
リオキシノニルアルキルフェノールホルムアルデヒド縮
合物(構造式中、m=3〜15、n=3〜5)は、極め
て優れた抗乳化性を示した。
As the above-mentioned demulsifier, polyoxyethylene alkylphenyl formaldehyde condensates and/or polyoxyethylene/polyoxybrobylene block copolymer are effective, and among them, polyoxynonyl alkylphenol formaldehyde condensates represented by the following structural formula The compound (in the structural formula, m=3 to 15, n=3 to 5) exhibited extremely excellent demulsifying properties.

上記した抗乳化剤の添加量は、温水に対して0、O1〜
0.5重量%の範囲が有効であり、この範囲以外では抗
乳化性が悪くなる。
The amount of the above-mentioned demulsifier added is 0, O1 to warm water.
A range of 0.5% by weight is effective, and demulsifying properties deteriorate outside this range.

上記した抗乳化剤と併用して温水に混合する塩化物は、
温水の比重を大きくするので、通常の温水を使用する場
合と比較してしてスラッジの打鈴効率を向上することが
でき、また、温水と流動化したスラッジとの比重差が大
きくなるとともに、塩化物による塩析作用により、スラ
ッジと温水との乳化を抑制することができるものである
Chlorides mixed into hot water in conjunction with the demulsifiers listed above are
Since the specific gravity of hot water is increased, the efficiency of striking sludge can be improved compared to the case of using normal hot water, and the difference in specific gravity between hot water and fluidized sludge is increased, Emulsification of sludge and hot water can be suppressed by the salting-out effect of chloride.

上記した塩化物としては、アルカリ金属或いはアルカリ
土類金属の塩化物を使用することができ、例えば、Ca
C1z 、 MgC1z 、NaC1を温水に20〜1
20重量%の範囲で添加混合してこの混合液の比重を1
.05〜1.4程度とし、少なくとも流動化した液状ス
ラッジとの比重差を0.1〜0.4とする必要がある。
As the above-mentioned chloride, an alkali metal or alkaline earth metal chloride can be used, for example, Ca
C1z, MgC1z, NaC1 in hot water 20-1
Add and mix in a range of 20% by weight to bring the specific gravity of this mixture to 1.
.. It is necessary to set the specific gravity to be about 0.05 to 1.4, and to make the difference in specific gravity from the fluidized liquid sludge to at least 0.1 to 0.4.

なお、上記した塩化物を混合した温水の代わりに海水を
使用したり、または海水に上記塩化物を混合した液を使
用してもよい。
Note that seawater may be used instead of the hot water mixed with the above-mentioned chloride, or a liquid obtained by mixing the above-mentioned chloride with seawater may be used.

本発明は、上記したような抗乳化剤および塩化物を、温
水に分散或いは溶解して油槽内に高圧で噴射することに
より、油槽の内壁面に堆積したスラッジを流動化させ、
流動化したスラッジ成分を温水とともに油槽の外部に排
出し、排出された液油水分離を容易にするものであるが
、上記した油槽から排出される混合液に前記した塩化物
を更に添加することにより、混合液を確実に、迅速に一
層容易に油水分離することができる。
The present invention fluidizes the sludge accumulated on the inner wall surface of the oil tank by dispersing or dissolving the demulsifier and chloride as described above in hot water and injecting the mixture at high pressure into the oil tank.
The fluidized sludge component is discharged to the outside of the oil tank together with hot water to facilitate the separation of the discharged liquid from oil and water. , the mixed liquid can be reliably, quickly and more easily separated into oil and water.

したがって、本発明によれば、油槽の内壁面に堆積した
スラッジを短時間において打鈴して排出することができ
、且つ排出された混合液を適宜な油水分離装置を用いる
ことにより短時間に油水分離処理することができるもの
である。
Therefore, according to the present invention, the sludge accumulated on the inner wall surface of the oil tank can be discharged by hammering in a short time, and the discharged mixed liquid can be converted into oil and water in a short time by using an appropriate oil and water separator. It can be separated and processed.

また、上記した混合液を油水分離することにより得られ
る水は、抗乳化剤および塩化物を含有するので、回収し
て再使用することができる。
Moreover, since the water obtained by separating the above-mentioned liquid mixture into oil and water contains a demulsifier and chloride, it can be recovered and reused.

したがって、本発明における水の循環サイクルは、油槽
と油水分離器とを加熱器やポンプなどを介して接続し、
適宜な位置に抗乳化剤、塩化物を添加するようにすれば
、本発明の油槽内のスラッジを回収する方法を実施する
ことができる。
Therefore, the water circulation cycle in the present invention connects the oil tank and the oil-water separator via a heater, a pump, etc.
By adding a demulsifier and a chloride to an appropriate position, the method of recovering sludge in an oil tank according to the present invention can be carried out.

図面に示す系統図は、抗乳化剤Aおよび塩化物Bを添加
した温水をポンプ1の駆動で第1バイブ2から油槽3内
に噴射ノズル4・・・により高圧噴射し、油槽3の底部
に堆積するスラッジCを破砕、粉砕して流動状態にし、
流動化したスラッジを温水とともにポンプ5の駆動によ
り第2バイブロに導いて油槽3から排出し、第2バイブ
ロの途中でスラッジ成分を含んだ混合液中に塩化物Bを
添加して第1油木分離器7に供給する。なお、第2バイ
ブロの途中で塩化物Bの添加は必ずしも絶対要件ではな
い。
The system diagram shown in the drawing shows that hot water added with demulsifier A and chloride B is injected at high pressure from the first vibrator 2 into the oil tank 3 by the drive of the pump 1 through the injection nozzle 4, and is deposited at the bottom of the oil tank 3. Crush and crush the sludge C to make it into a fluid state,
The fluidized sludge is guided along with hot water to the second vibro by driving the pump 5 and discharged from the oil tank 3, and in the middle of the second vibro, chloride B is added to the mixed liquid containing sludge components to separate the oil from the first oil. Supply to vessel 7. Note that addition of chloride B during the second vibro-treatment is not necessarily an absolute requirement.

第1油水分離器7では比重差により上側の油と下側の水
とに分離するので、油を第3バイブ8により油回収槽9
に供給し、水を第4パイプ10により第2油木分離器1
1に供給する。
In the first oil-water separator 7, the oil is separated into upper oil and lower water due to the difference in specific gravity, so the oil is transferred to the oil recovery tank 9 by the third vibrator 8.
and the water is supplied to the second oilwood separator 1 through the fourth pipe 10.
Supply to 1.

上記した第2油水分離器11に供給される水には油があ
る程度含まれているので、第2油水分離器11で十分に
油水分離し、分離した油は第5バイブ12により前記し
た油回収層9に供給し、水は第6バイブ13により水槽
14に供給する。そして、水槽14からの水を加温器1
5で所望の温度にまで加温して前記した第1バイブ2に
供給し、第1バイブ2の途中で抗乳化剤Aおよび塩化物
Bを補助的に添加して油槽3内に高圧噴射させるのであ
る。
Since the water supplied to the second oil-water separator 11 described above contains oil to some extent, the second oil-water separator 11 sufficiently separates the oil and water, and the separated oil is collected by the fifth vibrator 12 as described above. The water is supplied to the layer 9 and the water is supplied to the water tank 14 by the sixth vibrator 13. Then, the water from the water tank 14 is heated to the warmer 1.
5, the mixture is heated to a desired temperature and supplied to the first vibrator 2 described above, and demulsifier A and chloride B are supplementarily added in the middle of the first vibrator 2 and are injected at high pressure into the oil tank 3. be.

したがって、油槽3内で流動化されたスラッジは油とし
て油回収層9に貯留され、水は循環流により再使用する
ことができる。そして、温水に含有する抗乳化剤は油槽
内の側壁に付着しているスラッジに浸透して剥離を促進
したり、各バイブなどの流動過程においてスラッジが内
面に再付着するのを抑制し、しかも流動化したスラッジ
が温水と乳化するのを抑制するので、油水分離器での油
水分離効果を著しく向上することができる。また、温水
に塩化物を混合することにより温水の比重が大きくなる
ので、油槽内に温水を噴射する場合にスラッジとの衝撃
力が増大し、スラッジの打鈴効果を高めることができる
ばかりでなく、温水と流動化したスラッジとの比重差が
大きくなるので、各油水分離器での油水分離効果を高め
ることができる。この場合、油槽から排出される流動化
したスラッジを含有する温水に、更に塩化物を添加する
と、油水分離効果をより向上することができる。
Therefore, the sludge fluidized in the oil tank 3 is stored as oil in the oil recovery layer 9, and the water can be reused by circulation. The demulsifier contained in the hot water penetrates into the sludge adhering to the side walls of the oil tank and promotes its separation, suppresses sludge from re-adhering to the inner surface during the flow process of each vibrator, and also Since emulsification of the solidified sludge with hot water is suppressed, the oil-water separation effect in the oil-water separator can be significantly improved. In addition, by mixing chloride with hot water, the specific gravity of the hot water increases, so when hot water is injected into the oil tank, the impact force with the sludge increases, which not only increases the striking effect of the sludge. Since the difference in specific gravity between the hot water and the fluidized sludge becomes large, the oil-water separation effect in each oil-water separator can be enhanced. In this case, if chloride is further added to the hot water containing fluidized sludge discharged from the oil tank, the oil-water separation effect can be further improved.

〈実施例〉以下に本発明の詳細な説明する。<Example>The present invention will be explained in detail below.

直径1m、高さ1mの円筒状タンク内に原油スラッジ約
80kgを入れて60℃に加温した後、試験水80f2
を60℃にして4kgの圧力でノズルからスラッジに噴
射した。タンクから排出されるスラッジを含む混合液は
、油水分離器によりスラッジ成分である油と水とに分離
し、水を試験水槽に戻して循環流させた。上記した操作
において、試験水(循環水)のスラッジ打鈴性および油
水分離器における混合液の水分離性を測定した。
Approximately 80 kg of crude oil sludge was placed in a cylindrical tank with a diameter of 1 m and a height of 1 m, and after heating it to 60°C, 80 f2 of test water was added.
was heated to 60° C. and injected into the sludge from a nozzle at a pressure of 4 kg. The mixed liquid containing sludge discharged from the tank was separated into oil and water, which are sludge components, by an oil-water separator, and the water was returned to the test tank and circulated. In the above-described operation, the sludge striking performance of the test water (circulated water) and the water separation performance of the mixed liquid in the oil-water separator were measured.

抗乳化剤(1)ポリオキシエチレンノニルフェノールホルムアルデヒド
 縮合物  30wt%(商品名 :NIKKOL  
R−1020,日本サーファクタントネ上製)オクチル
カルピトール                   
    60wt%鉱油              
 10wt%抗乳化剤(2)ポリオ初エチレン・ポリオキシプロピレンブロックコボ
リマ−30wt%(商品名:ブルロニックL−71,旭
電化社製)オクチルカルピトール          
                60wt%鉱油  
             10wt%上記した抗乳化
剤(1)又は(2)及び塩化物として CaC:1□を
使用して実施例1〜3の試験水を作成し、また上記した
抗乳化剤(1)と海水と CaCl2とを使用して実施
例4の試験水を作成した。
Demulsifier (1) Polyoxyethylene nonylphenol formaldehyde condensate 30wt% (Product name: NIKKOL
R-1020, manufactured by Nippon Surfactantone Co., Ltd.) Octyl Calpitol
60wt% mineral oil
10wt% Demulsifier (2) Polyolefin ethylene/polyoxypropylene block cobolimer-30wt% (Product name: Bluronic L-71, Asahi Denka Co., Ltd.) Octylcarpitol
60wt% mineral oil
The test waters of Examples 1 to 3 were prepared using 10 wt% of the above demulsifier (1) or (2) and CaC:1□ as a chloride, and the above demulsifier (1), seawater, and CaCl2 were prepared. The test water of Example 4 was prepared using the following.

試験水、ブランク及び比較例の混合成分配合量、比重を
下記の第1表に示す。
Table 1 below shows the blended amounts and specific gravity of the test water, blank, and comparative example.

実施例4.比較例4の温水は海水である。また、試験に
用いた原油スラッジの比重は0.97であった。
Example 4. The hot water in Comparative Example 4 is seawater. Further, the specific gravity of the crude oil sludge used in the test was 0.97.

1、試験水のスラッジ打鈴性試験。1. Sludge striking property test of test water.

上記した実施例1〜4、比較例1〜4の試験水および温
水(ブランク)の噴射により、80kgのスラッジが全
て打鈴されるまでの時間をIII定した。結果は下記の
第2表に示した。
By spraying the test water and hot water (blank) of Examples 1 to 4 and Comparative Examples 1 to 4 described above, the time until all 80 kg of sludge was struck was determined. The results are shown in Table 2 below.

2、循環水(試験水)の水分離性試験。2. Water separation test of circulating water (test water).

スラッジの打鈴循環水100mρを比色管に取り、60
℃の恒温水槽中に静置し、水分離量を測定した。結果は
下記の第3表に示した。
Take 100 mρ of sludge circulating water into a colorimetric tube and
The sample was placed in a constant temperature water bath at ℃, and the amount of water separated was measured. The results are shown in Table 3 below.

〈発明の効果〉以上説明したように、本発明によると、油槽内に噴射す
る温水に抗乳化剤および塩化物を添加するようにしたの
で、比重の高い温水を油槽内に堆積したスラッジに噴射
してスラッジの打鈴効率が著しく向上し、スラッジを温
水と共に油槽から排出することができる。
<Effects of the Invention> As explained above, according to the present invention, since a demulsifier and chloride are added to the hot water injected into the oil tank, hot water with a high specific gravity can be injected into the sludge accumulated in the oil tank. The sludge striking efficiency is significantly improved, and the sludge can be discharged from the oil tank along with hot water.

また、油槽から排出するスラッジを含んだ温水は、抗乳
化剤の乳化破壊作用、および塩化物混合によるスラッジ
と温水の比重差、並びに塩化物の塩析作用により容易に
、迅速に分離することができるものであり、効率的にス
ラッジを回収し、温水を回収・循環させることができる
In addition, the hot water containing sludge discharged from the oil tank can be easily and quickly separated due to the demulsifying action of the demulsifier, the difference in specific gravity between the sludge and the hot water due to the mixing of chloride, and the salting out action of the chloride. It is possible to efficiently collect sludge and collect and circulate hot water.

さらに、本発明に使用する抗乳化剤は、水とスラッジと
の乳化を破壊するだけでな(、油槽の内壁面に付着して
堆積したスラッジに浸透して付着スラッジの剥離を促進
することができ、また、流動中の油水混合液のスラッジ
の油槽壁面や排出管内壁への再付着を抑制することがで
きるものである。
Furthermore, the demulsifier used in the present invention not only destroys the emulsification between water and sludge, but also penetrates into the sludge that has adhered to and accumulated on the inner wall surface of the oil tank and promotes the peeling off of the adhered sludge. Moreover, it is possible to suppress re-adhesion of the sludge of the flowing oil-water mixture to the oil tank wall surface or the inner wall of the discharge pipe.

したがって、本発明は、油槽内のスラッジを効率良く除
去することができと共に、油槽から排出されるスラッジ
を含んだ温水の油水分離を容易に行うことができる。
Therefore, the present invention can efficiently remove sludge in an oil tank, and can easily separate oil and water from hot water containing sludge discharged from the oil tank.

また、従来のオイルを噴射する共油洗浄方法に比べて、
配管およびその他の構成が簡単でよ(、また、1工程で
油槽内の洗浄を行うことができるので、経済的にも作業
的にも極めて実用性が高いものである。
In addition, compared to the conventional co-oil cleaning method that sprays oil,
The piping and other structures are simple (and the inside of the oil tank can be cleaned in one step), making it extremely practical both economically and in terms of work.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の方法を実施する系統図である。FIG. 1 is a system diagram for implementing the method of the present invention.

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims] 抗乳化剤と塩化物とを添加して比重を大きくした温水
を油槽内に高圧噴射させてスラッジを流動状態にし、流
動化したスラッジを温水と共に油槽外に排出してスラッ
ジと温水とを分離し、温水を再度油槽内に高圧噴射させ
るとともに、スラッジを回収するようにしたことを特徴
とする油槽内のスラッジを回収する方法。
Hot water whose specific gravity has been increased by adding a demulsifier and chloride is injected at high pressure into the oil tank to make the sludge fluid, and the fluidized sludge is discharged out of the oil tank together with the hot water to separate the sludge and the hot water. A method for recovering sludge in an oil tank, characterized by injecting hot water at high pressure into the oil tank again and collecting the sludge.
JP2025257A1990-02-061990-02-06 How to collect sludge in oil tankExpired - Fee RelatedJP2835759B2 (en)

Priority Applications (1)

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JP2025257AJP2835759B2 (en)1990-02-061990-02-06 How to collect sludge in oil tank

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Application NumberPriority DateFiling DateTitle
JP2025257AJP2835759B2 (en)1990-02-061990-02-06 How to collect sludge in oil tank

Publications (2)

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JPH03229682Atrue JPH03229682A (en)1991-10-11
JP2835759B2 JP2835759B2 (en)1998-12-14

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CountryLink
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Cited By (5)

* Cited by examiner, † Cited by third party
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US6294093B1 (en)1998-09-042001-09-25Nalco/Exxon Energy Chemicals, L.P.Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions
EP1281445A1 (en)*2001-08-012003-02-05H.C.I., naamloze vennootschapMethod of emptying and cleaning an oil tank
WO2012141024A1 (en)*2011-04-142012-10-18システム機工株式会社Method for recovering oil fraction in crude oil sludge
CN113025374A (en)*2021-05-252021-06-25东营市正能石油科技有限公司Low-temperature demulsifier for offshore oil field and preparation method thereof
CN113402132A (en)*2021-05-112021-09-17董彬虎Efficient treatment process for oily sludge

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* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US8555830B2 (en)2011-10-142013-10-15James LockshawOrbital, non-reciprocating, internal combustion engine
KR101448992B1 (en)2013-04-162014-10-13주식회사 경동나비엔Dual venturi for burner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6294093B1 (en)1998-09-042001-09-25Nalco/Exxon Energy Chemicals, L.P.Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions
EP1281445A1 (en)*2001-08-012003-02-05H.C.I., naamloze vennootschapMethod of emptying and cleaning an oil tank
BE1014323A3 (en)*2001-08-012003-08-05H C I NvMethod and device for emptying and cleaning of a storage tank for oil.
WO2012141024A1 (en)*2011-04-142012-10-18システム機工株式会社Method for recovering oil fraction in crude oil sludge
JP5925189B2 (en)*2011-04-142016-05-25システム機工株式会社 Oil recovery method in crude oil sludge
CN113402132A (en)*2021-05-112021-09-17董彬虎Efficient treatment process for oily sludge
CN113025374A (en)*2021-05-252021-06-25东营市正能石油科技有限公司Low-temperature demulsifier for offshore oil field and preparation method thereof

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