CN105107359B - A kind of cleaning method of inner floating roof light oil tank - Google Patents
A kind of cleaning method of inner floating roof light oil tank Download PDFInfo
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- CN105107359B CN105107359B CN201510568115.5A CN201510568115A CN105107359B CN 105107359 B CN105107359 B CN 105107359B CN 201510568115 A CN201510568115 A CN 201510568115A CN 105107359 B CN105107359 B CN 105107359B
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- oil tank
- light oil
- tank
- cleaning fluid
- floating roof
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Abstract
The invention discloses a kind of cleaning method of inner floating roof light oil tank, the method includes：（1）Toxic and harmful in inner floating roof light oil tank floating plate underlying space is drawn from the manhole of gas holder bottom, sealed pipeline causes air-introduced machine entrance, after being pressurizeed via air-introduced machine, deliver in absorption plant and be in contact with cleaning fluid generation gas-liquid, poisonous and harmful substance in gas is removed after being reacted with cleaning fluid, and purified gas is discharged into air from absorption plant；（2）Harmful substance in tank bottom drift, is removed after being fully contacted with cleaning fluid by stirring.Using technical scheme, solve the problems, such as that existing inner floating roof light oil tank toxic and harmful cannot be purified, time-consuming for PROCESS FOR TREATMENT, environmental pollution and safety cannot be ensured, with good social and economic benefit.
Description
Technical field
The present invention relates to petrochemical industry, and in particular to a kind of cleaning method of inner floating roof light oil tank.
Background technology
Oil product storage tank is the conventional equipment of oil refining and chemical plant, and the medium in light oil tank has volatilization property, oil product
Light components, oil product in mercaptan, thioether, H2S、NH3All there is volatilization property etc. poisonous and harmful substance, it is poisonous in order to prevent
Harmful substance is evaporate into air, is often taken to tank deck nitrogen charging gas shielded, is installed the isolation such as inner floating roof with sealing property
Method.Additionally, oil product is in processing and transport process, corrosion product --- the solid particulate matter such as mainly FeS, coke powder can be with
Oil product delivers into storage tank, and after being stood in storage tank, these solid particulate matters are deposited on tank bottom by sedimentation separation, long-term tired
After product, sediment deposit is formed in tank bottom.
Light oil tank before maintenance, it is necessary to carry out PROCESS FOR TREATMENT to storage tank, to remove having in floating plate underlying space
Malicious pernicious gas, removes the FeS of tank bottom sediment deposit.At present, the treatment of oil refining and chemical plant to inner floating roof light oil tank is most
Take nitrogen displacement, the method for steam blowing.
There is certain defect in the existing processing method to inner floating roof light oil tank：Poisonous and harmful in floating plate underlying space
Gas can only be discharged into air after nitrogen displacement, steam blowing, mercaptan, thioether, H2S、NH3Volatilized etc. poisonous and harmful substance
To in air, one is to cause environmental degradation, and two is to trigger to be injured into body.In order to control toxic and harmful in being discharged into air dense
Degree, displacement or steam blowing need to take a long time.
The content of the invention
It is an object of the invention to provide a kind of cleaning method of inner floating roof light oil tank, have the process employs by poisonous
The method that evil gas is discharged again after being purified in absorption plant after being drawn from floating plate underlying space, solves existing inner floating roof light
Matter oil tank toxic and harmful cannot purify, replace or purge the problem that time-consuming, and the waste liquid of generation is few, with good society
And economic benefit.
To reach above-mentioned purpose, the technical solution adopted for the present invention to solve the technical problems is：A kind of inner floating roof lightweight
Oilcan cleaning method, comprises the following steps：
A kind of cleaning method of inner floating roof light oil tank, comprises the following steps：
（1）A part of cleaning fluid is extracted by fluid filling pump, pipeline or blowdown pipeline injection are extracted out from the tank bottom of light oil tank
On light oil tank inner bottom plating, and make on liquid oil that cleaning fluid is covered on light oil tank base plate and solid drift, to press down
Poisonous and harmful substance is diffused into floating plate underlying space in light oil tank in the tank bottom raffinate or tank bottom drift of light oil tank processed；
（2）A part of cleaning fluid is extracted by fluid filling pump, is noted from the tank deck breather valve of nitrogen protective wire or light oil tank
Enter in light oil tank floating plate top, the step is only limitted in the case that floating plate sealing has been damaged in light oil tank；
（3）Toxic and harmful in floating plate underlying space in light oil tank is drawn from the tank bottom manhole of light oil tank
Go out, sealed pipeline causes air-introduced machine entrance, after being pressurizeed via air-introduced machine, deliver in absorption plant and occur with a part of cleaning fluid
Gas-liquid is in contact, and the poisonous and harmful substance in gas is removed after being reacted with cleaning fluid, and purified gas is from absorption
It is discharged into air in device；
（4）Poisonous and harmful substance constituent reduction in light oil tank in floating plate underlying space gas is in the range of safe concentration
When, stop gas and draw and absorption plant operation, open the tank bottom manhole of light oil tank；
（5）A part of cleaning fluid is extracted by high-pressure jet cleaning machine, from its tank of directive at the tank bottom manhole of light oil tank
In the drift of bottom, tank bottom pollutant is set to be adequately exposed to cleaning fluid, so that the poisonous and harmful substance in drift is able to clearly
Remove.
The light oil tank is internal floating roof tank, and inner floating roof is made up of floating plate, guide rail, sealing ring etc., and inner floating roof is for inciting somebody to action
Light-end products and isolated from atmosphere.
The absorption plant is packed tower or plate column；What is pumped out from floating plate underlying space in light oil tank has
Malicious pernicious gas enters from absorption plant bottom, is discharged from top after purification；Cleaning fluid enters absorption plant by circulation pumped
Top, is back to absorption plant bottom collecting tank from top to bottom, and extracting pressurized circulation through circulating pump uses；Cleaning fluid with from floating plate
After the toxic and harmful liquid phase contact mass transfer pumped out in underlying space, cleaning fluid activity is reduced, it is necessary to change fresh clear
Washing lotion, to ensure assimilation effect.
The air-introduced machine is arranged on absorption plant air inlet, and this installation method is suitable for inner floating roof sealing normally or failure
Situation.
The air-introduced machine is arranged at another manhole of light oil tank bottom, for being blown to light oil tank.
Preferentially, for ensure from absorption plant discharge purification after gas in the range of safe concentration, the air-introduced machine is adopted
With variable frequency regulating speed control, initial stage suction floating plate underlying space high concentration toxic and harmful, Frequency Converter Control is in below 15Hz.
In the above-mentioned technical solutions, the present invention has following beneficial effect：（1）Solve toxic and harmful in light oil tank
The problem that cannot be purified, is greatly lowered on surrounding enviroment influence；（2）By selecting different cleaning fluids, difference can be purified
Toxic and harmful；（3）The light oil tank maintenance pre-treatment time is greatly shortened, with regard to 3000-5000m3Storage tank for, pass
The PROCESS FOR TREATMENT of system needs the time of 1 week, takes the present invention, process time to be not more than 24 hours；（4）Safe coefficient is significantly carried
It is high.
Brief description of the drawings
Fig. 1 is a kind of flow chart of inner floating roof light oil tank cleaning method of the invention.
Specific embodiment
A kind of inner floating roof light oil tank cleaning method of the invention is made further specifically with reference to Fig. 1 and embodiment
It is bright.The accompanying drawing for constituting the application is used for providing a further understanding of the present invention, schematic description and description of the invention
For explaining the present invention, inappropriate limitation of the present invention is not constituted.
As shown in Figure 1, the equipment for the cleaning of inner floating roof light oil tank includes air-introduced machine 6, is floated for aspirating light oil tank 1
Toxic and harmful in disk 2 and the space of base plate 5, is passed to the bottom inlet of absorption plant 8, in order that toxic and harmful
It is purified, needs, with a certain amount of cleaning fluid is previously added, to be extracted through circulating pump 9 in the bottom collecting tank 10 of absorption plant 8
The top of absorption plant 8 is delivered to after pressurization, cleaning fluid passes through absorption plant 8 and inversely contacted with toxic and harmful,
Mass transfer or reaction are completed in absorption plant 8, from the top discharge of absorption plant 8 to air after being purified toxic and harmful
In, cleaning fluid falls into collecting tank 10 recycling after rise.To ensure the every concentration after toxic and harmful purification in safe model
It is discharged into air in enclosing, it is necessary to the amount of toxic and harmful is extracted in the control of variable-frequency governor 7 for passing through air-introduced machine out, meanwhile, when
, it is necessary to the cleaning fluid for more renewing when cleaning fluid activity or active ingredient reduction.It is intact in the inner floating roof sealing 3 of light oil tank 1
In the case of, blower fan 6 may be mounted at blows at the bottom manhole 4-1 of light oil tank 1 to the space of floating plate 2 and base plate 5, manhole 4-2
Temporary pipeline is installed to be connected at the bottom gas inlet of absorption plant 8, if can not judge, whether sealing 3 is intact, and air-introduced machine 6 is by figure
It is installed at manhole 4-2 shown in 1, after pumping operation starts, manhole 4-1 needs to open, to prevent from for light oil tank 1 taking out flat.
Embodiment one：
The present embodiment is directed to oil refining apparatus inner floating roof light oil tank, including inner floating roof lightweight slop tank 1, poisonous in tank to have
Evil gas is mainly H2The pollutant of the foul odours such as S, mercaptan, thioether, it is right containing harmful substances such as FeS in tank bottom sediment deposit
Such tank cleaning, cleaning fluid can be using D-1, D-2 type FeS passivation cleaning agents of Wuhan Jia Yi Chemical Co., Ltd.s production.
Step is：（1）A part of cleaning fluid is extracted by fluid filling pump, pipeline or blow-off pipe are extracted out from the tank bottom of light oil tank
On line injection light oil tank inner bottom plating, and make liquid oil and solid drift that cleaning fluid is covered on light oil tank base plate
On, floating plate underlying space in light oil tank is diffused into poisonous and harmful substance in suppressing tank bottom raffinate or tank bottom drift；
（2）A part of cleaning fluid is extracted by fluid filling pump, is noted from the tank deck breather valve of nitrogen protective wire or light oil tank
Enter in light oil tank floating plate top, the step is only limitted in the case that floating plate sealing has been damaged in light oil tank；
（3）Toxic and harmful in floating plate underlying space in light oil tank is drawn from the tank bottom manhole of light oil tank
Go out, sealed pipeline causes air-introduced machine entrance, after being pressurizeed via air-introduced machine, deliver in absorption plant and occur with branch's cleaning fluid
Gas-liquid is in contact, and the poisonous and harmful substance in gas is removed after being reacted with cleaning fluid, and purified gas is from absorption
It is discharged into air in device；
（4）Poisonous and harmful substance constituent reduction in light oil tank in floating plate underlying space gas is in the range of safe concentration
When, stop gas and draw and absorption plant operation, open the tank bottom manhole of light oil tank；
（5）A part of cleaning fluid is extracted by high-pressure jet cleaning machine, from directive tank bottom at the tank bottom manhole of light oil tank
In drift, the tank bottom pollutant of light oil tank is set to be adequately exposed to cleaning fluid, so that the venomous injurant in drift
Matter is removed.
In the present embodiment, light oil tank is internal floating roof tank, and inner floating roof is made up of floating plate, guide rail, sealing ring etc., and inner floating roof is
For by light-end products and isolated from atmosphere.Absorption plant is packed tower, is pumped out from floating plate underlying space in light oil tank
Toxic and harmful enters from absorption plant bottom, is discharged from top after purification；Cleaning fluid enters absorption and fills by circulation pumped
Top set portion, is back to absorption plant bottom collecting tank from top to bottom, and extracting pressurized circulation through circulating pump uses；Cleaning fluid with from floating
After the toxic and harmful liquid phase contact mass transfer pumped out in disk underlying space, cleaning fluid activity is reduced, it is necessary to change fresh
Cleaning fluid, to ensure assimilation effect.The air-introduced machine of the present embodiment is arranged on absorption plant air inlet.To ensure to arrange from absorption plant
In the range of safe concentration, the air-introduced machine of the present embodiment uses variable frequency regulating speed control, initial stage suction floating plate to gas after the purification for going out
Underlying space high concentration toxic and harmful, Frequency Converter Control is in below 15Hz.
Embodiment two：
The present embodiment is directed to oil refining apparatus dry type gas recovery processing gas holder, including Seal Oil formula or roller shutter type dry type gas
Cabinet, toxic and harmful is mainly H in gas holder2S, mercaptan, thioether, NH3Deng the pollutant of foul odour, in the sediment deposit of gas holder bottom
Containing harmful substances such as FeS, ammoniacal liquors, to such tank cleaning, cleaning fluid can be using the production of Wuhan Jia Yi Chemical Co., Ltd.s
JYTC-1 type deodorant cleaning agents.
Step is：（1）A part of cleaning fluid is extracted by fluid filling pump, pipeline is extracted out from gas holder bottom or blowdown pipeline injection is light
On matter oil gas cabinet inner bottom plating；
（2）Toxic and harmful in gas holder floating plate underlying space is drawn from the manhole of gas holder bottom, sealed pipeline draws
To air-introduced machine entrance, after being pressurizeed via air-introduced machine, deliver in absorption plant and be in contact with branch's cleaning fluid generation gas-liquid, gas
In poisonous and harmful substance reacted with cleaning fluid after removed, purified gas is discharged into air from absorption plant
In；
（3）When poisonous and harmful substance constituent reduction in gas holder floating plate underlying space gas is in the range of safe concentration, stop
Only gas is drawn and absorption plant operation, opens gas holder bottom manhole；
（4）A part of cleaning fluid is extracted by high-pressure jet cleaning machine, from directive gas holder bottom drift at the manhole of gas holder bottom
It is interior, gas holder bottom pollutant is adequately exposed to cleaning fluid, so that the poisonous and harmful substance in drift is removed.
In the present embodiment, to ensure from gas after the purification of absorption plant discharge in the range of safe concentration, air-introduced machine peace
At the manhole of gas holder bottom, for being blown in gas holder.The air-introduced machine of the present embodiment is also adopted by variable frequency regulating speed control, and the initial stage takes out
Floating plate underlying space high concentration toxic and harmful is inhaled, Frequency Converter Control is in below 15Hz.
The above, is only embodiments of the invention, and not the present invention is imposed any restrictions, every according to the technology of the present invention
The change of any simple modification, change and equivalent method that essence is made to above example, still falls within the technology of the present invention
In the protection domain of scheme.
Claims (6)
1. a kind of cleaning method of inner floating roof light oil tank, comprises the following steps：
(1) a part of cleaning fluid is extracted by fluid filling pump, pipeline or blowdown pipeline injection lightweight is extracted out from the tank bottom of light oil tank
On oil tank inner bottom plating, and make on liquid oil that cleaning fluid is covered on light oil tank base plate and solid drift, to suppress light
Poisonous and harmful substance is diffused into floating plate underlying space in light oil tank in the tank bottom raffinate or tank bottom drift of matter oil tank；
(2) a part of cleaning fluid is extracted by fluid filling pump, injects light from the tank deck breather valve of nitrogen protective wire or light oil tank
Matter float disk in oil tank top, the step is only limitted in light oil tank in the case that floating plate sealing damaged；
(3) toxic and harmful in floating plate underlying space in light oil tank is drawn from the tank bottom manhole of light oil tank, is passed through
Sealing pipeline causes air-introduced machine entrance, after being pressurizeed via air-introduced machine, delivers in absorption plant and gas-liquid occurs with a part of cleaning fluid
It is in contact, the poisonous and harmful substance in gas is removed after being reacted with cleaning fluid, purified gas is from absorption plant
Inside it is discharged into air；
(4) when the poisonous and harmful substance constituent reduction in light oil tank in floating plate underlying space gas is in the range of safe concentration,
Stop gas drawing and absorption plant operation, open the tank bottom manhole of light oil tank；
(5) a part of cleaning fluid is extracted by high-pressure jet cleaning machine, is become silted up from its tank bottom of directive at the tank bottom manhole of light oil tank
In product thing, tank bottom pollutant is set to be adequately exposed to cleaning fluid, so that the poisonous and harmful substance in drift is removed.
2. the cleaning method of a kind of inner floating roof light oil tank according to claim 1, it is characterized in that：The light oil tank is
Internal floating roof tank, inner floating roof includes floating plate, guide rail, sealing ring, and inner floating roof is for by light-end products and isolated from atmosphere.
3. the cleaning method of a kind of inner floating roof light oil tank according to claim 1, it is characterized in that：The absorption plant is
Packed tower or plate column；The toxic and harmful pumped out from floating plate underlying space in light oil tank is from absorption plant bottom
Portion enters, and is discharged from top after purification；Cleaning fluid enters absorption plant top by circulation pumped, and absorption is back to from top to bottom
Bottom of device collecting tank, extracts pressurized circulation and uses through circulating pump；Cleaning fluid is poisonous with what is pumped out from floating plate underlying space
After pernicious gas liquid phase contact mass transfer, cleaning fluid activity is reduced, it is necessary to change fresh cleaning solution, to ensure assimilation effect.
4. the cleaning method of a kind of inner floating roof light oil tank according to claim 1, it is characterized in that：The air-introduced machine is installed
In absorption plant air inlet.
5. the cleaning method of a kind of inner floating roof light oil tank according to claim 1, it is characterized in that：The air-introduced machine is installed
At another manhole of light oil tank bottom, for being blown to light oil tank.
6. the cleaning method of a kind of inner floating roof light oil tank according to claim 1 or claim 4 or claim 5,
It is characterized in that：The air-introduced machine uses variable frequency regulating speed control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510568115.5A CN105107359B (en) | 2015-09-09 | 2015-09-09 | A kind of cleaning method of inner floating roof light oil tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510568115.5A CN105107359B (en) | 2015-09-09 | 2015-09-09 | A kind of cleaning method of inner floating roof light oil tank |
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| CN105107359B true CN105107359B (en) | 2017-07-07 |
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| CN112427352B (en) * | 2020-11-29 | 2022-09-09 | 河南基兆建筑工程有限公司 | Buoyancy lifting type water tower inner wall cleaning equipment for hydraulic engineering |
| CN113003028B (en) * | 2021-03-24 | 2022-11-11 | 威特龙消防安全集团股份公司 | System and method for overall-process operation safety protection of external floating roof storage tank |
| CN113120451B (en) * | 2021-04-06 | 2022-05-27 | 辽宁石油化工大学 | Liquid sealing pressure relief manhole |
| CN114801015B (en) * | 2022-05-09 | 2023-05-05 | 东莞海瑞斯新材料科技有限公司 | Boosting equipment for conveying material foaming supercritical fluid |
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| CN101489694A (en) * | 2006-05-15 | 2009-07-22 | 彼得罗耶国际公司 | System for cleaning an oil tank and method of cleaning an oil tank |
| CN201324733Y (en) * | 2008-12-23 | 2009-10-14 | 刘战平 | Cleaning device for petroleum tank |
| CN204074655U (en) * | 2014-08-01 | 2015-01-07 | 北京生态岛科技有限责任公司 | A kind of cleaning device of the oil storage tank for H 2 S-containing gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003231891A (en) * | 2002-02-08 | 2003-08-19 | Tetsuo Sugioka | Method for washing oil storage tank and for producing fuel |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634958B1 (en) * | 1992-03-17 | 1997-10-22 | Toftejorg Technology A/S | Method and apparatus for cleaning an oil tank |
| CN101489694A (en) * | 2006-05-15 | 2009-07-22 | 彼得罗耶国际公司 | System for cleaning an oil tank and method of cleaning an oil tank |
| CN201324733Y (en) * | 2008-12-23 | 2009-10-14 | 刘战平 | Cleaning device for petroleum tank |
| CN204074655U (en) * | 2014-08-01 | 2015-01-07 | 北京生态岛科技有限责任公司 | A kind of cleaning device of the oil storage tank for H 2 S-containing gas |
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| CN105107359A (en) | 2015-12-02 |
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Effective date of registration: 20170612 Address after: 246004, No. 1-1, camphor Road, Daguan Industrial Park, Anhui, Anqing Applicant after: Anqing Xincheng antisepsis Cleaning Co., Ltd. Address before: 246002, No. 1-1, camphor Road, Daguan Industrial Park, Anhui, Anqing Applicant before: ANQING BRANCH OF WUHAN JIAYI CHEMICAL CO., LTD. |
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