KR20160125046A - Water washing method and system for crude oil tank equipped with natural purification system - Google Patents
Water washing method and system for crude oil tank equipped with natural purification system Download PDFInfo
- Publication number
- KR20160125046A KR20160125046A KR1020150055688A KR20150055688A KR20160125046A KR 20160125046 A KR20160125046 A KR 20160125046A KR 1020150055688 A KR1020150055688 A KR 1020150055688A KR 20150055688 A KR20150055688 A KR 20150055688A KR 20160125046 A KR20160125046 A KR 20160125046A
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- Prior art keywords
- water
- crude oil
- oil tank
- washing
- discharging
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0813—Cleaning containers having tubular shape, e.g. casks, barrels, drums by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/0093—Devices for cleaning the internal surfaces of the container and forming part of the container
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
Description
The present invention relates to a crude oil tank water cleaning method and system for removing sludge accumulated in a crude oil tank temporarily storing crude oil before purification using water and can be cleaned within a short time more than several times compared with existing methods The operator does not enter the crude oil tank and the cleaning operation is performed. When the operator enters the crude oil tank for finishing, there is almost no risk of safety accident due to the absence of the crude oil component, the environmental pollution caused by the cleaning operation is minimized, The present invention relates to a crude oil tank water cleaning method and system for separating and purifying sludge discharged from a work as waste oil and solid incineration water to reuse waste oil.
Crude oil pulled from the underground is temporarily stored in the crude tank before it is put into the tanker and before entering the refinery for refining.
When the inflow and outflow of crude oil into the crude oil tank are repeated, the sludge accumulates on the bottom of the crude oil tank and is fixed.
If the amount of accumulated sludge accumulated increases, the storage capacity of the crude oil tank is reduced, and at some point, the refining operation to remove the sludge from the crude oil tank should be performed.
Usually, several years have elapsed and sludge accumulates by 1-2 m, and refining work is necessary.
In the prior art relating to a crude oil tank cleaning apparatus for removing sludge accumulated in a crude oil tank, there is disclosed in Korean Patent No. 10-1224010 entitled " automatic crude oil tank cleaning apparatus ", Registered Patent No. 10-0475172, A method of recovering oil fractions "
In the prior art including the above-mentioned Japanese Patent No. 10-1224010 and Japanese Patent No. 10-0475172, a high-temperature thermal oil is injected into the crude oil tank to melt the fixed sludge, and then the mixture of the thermal oil and the molten sludge is pumped The mixture which is discharged to the outside of the crude oil tank and which can not be discharged by the pump is put on the bottom of the crude oil tank and the crude oil tank is cleaned by the operator wearing the mask and removing it by hand.
In the prior art, the sludge of the oil component is melted by using the oil component of the thermal oil.
However, in the prior art, melting of the sludge using the thermal oil is not so fast. The initial heat transfer fluid is high temperature so that the sludge melting rate is relatively fast. However, since the temperature of the heat transfer oil is lowered over time, the melting rate is slowed down. Aside from spontaneous melting, there is no other factor for increasing the melt speed Sludge melting takes a long time.
So it takes less than a year to clean all the crude oil tanks in the complex where dozens of large oil tanks with a diameter of several tens of meters are gathered.
In the prior art, the sludge remaining on the bottom of the crude oil tank which can not be discharged by the pump is manually removed by the operator into the crude oil tank. The inside of the crude oil tank is filled with harmful components, If you wear an oxygen mask, you can not guarantee safety.
In the prior art, the mixture of the thermal oil discharged from the crude oil tank and the sludge is stored in the tank for a certain period of time. When the sludge precipitates to the bottom of the tank, the oil (mostly thermal oil) So that sediments with many oil components are discarded and the problem of environmental pollution due to incineration is large.
The present invention has been made in order to solve the problem that the cleaning operation is slowed by cleaning the crude oil tank using the thermal catalyst oil in the prior art and the risk of safety accident of the operator is large and the oil component which can be reused is discarded and the environmental pollution is solved As a contemplated invention,
By using water, high-temperature steam and high-pressure water, the crude oil tank can be cleaned at a high speed more than several times as compared with the conventional technology, and most of the crude oil in the crude oil tank is removed through the cleaning process, The waste water discharged from the crude oil tank by the cleaning operation is purified and separated into waste oil, waste water and solid incineration water, and the waste oil is reused as oil, and the waste water is reused as waste oil It is an object of the present invention to provide a crude oil tank cleaning method and system which can reuse waste oil and wastewater and can minimize environmental pollution because only a small amount of solid incineration water is reused for incineration of crude oil tanks and incinerated. .
In order to accomplish the above object, a crude oil tank water cleaning method according to the present invention comprises:
A washing water supplying step of supplying wash water to the crude oil tank;
A high-pressure water discharging step of discharging high-pressure high-pressure water to the bottom of the crude oil tank to mix the molten sludge with the washing water after the washing water charging step;
And a mixed water discharging step of continuously discharging the high-pressure water to the bottom of the crude oil tank while discharging the mixed water to the outside.
And a steam discharging step of discharging high temperature steam to the bottom of the crude oil tank to melt the sludge after the washing water injecting step,
When the sludge concentration of the discharged mixed water falls below a predetermined value, the mixed water is continuously discharged into the bottom of the crude oil tank from the center to the bottom of the crude oil tank so that the mixed water is concentrated at the edge of the crude oil tank; Further comprising:
And a mixed water purification step of purifying the discharged mixed water to separate into waste oil, wastewater and solid incineration water.
The crude oil tank water cleaning system according to the present invention
A water supply pump for supplying wash water to the crude oil tank;
Pressure pump for discharging high-pressure high-pressure water to the bottom of the crude oil tank;
And a drain pump for discharging the mixed water in which the washing water and the high-pressure water are mixed with the molten sludge from the crude oil tank.
And a boiler for discharging high-temperature steam to the bottom of the crude oil tank,
And a rotary member for injecting rotational water from the center to the bottom of the crude oil tank so as to concentrate the mixed water to the edges of the crude oil tank.
Further comprising a purification device for separating and purifying the mixed water discharged through the drain pump into waste oil, wastewater and solid incineration water,
And a regeneration pump for supplying wastewater separated and purified in the purifier to a water tank.
The crude oil tank cleaning method and system according to the present invention configured as described above can quickly melt the sludge that has been fixed using the high temperature and high pressure steam and the melted sludge can be separated more quickly using the high pressure water, The crude oil tank can be cleaned at a speed several times faster than the conventional cleaning operation using the catalyst oil and most of the crude oil components (sludge and gas, etc.) in the crude oil tank are cleaned by using only water such as washing water, steam, And the waste water discharged from the crude oil tank is separated and purified into waste oil, waste water and solid incineration water, so that waste oil and waste water can be recycled And only the minimum amount of solid incineration is incinerated, the recycling of the energy source is excellent, As a method of cleaning crude oil tanks with water and a system to reduce, it is a very useful invention in the industry.
1 is a procedure diagram of a crude oil tank water cleaning method according to the present invention;
2 is a schematic structural view of the entire crude oil tank water cleaning system according to the present invention.
Fig. 3 is a configuration diagram for injecting an inert gas into a crude oil tank; Fig.
Fig. 4 is a view showing a configuration for injecting washing water into a crude oil tank; Fig.
FIG. 5 is a view showing the construction of injecting steam and high-pressure water into a crude oil tank. FIG.
6 is a configuration diagram for discharging mixed water to a collection tank;
FIG. 7 is a view showing a configuration for injecting the number of revolutions into a crude oil tank. FIG.
8 is a schematic view for purifying mixed water discharged and collected;
9 is a view schematically showing a crude oil natural refining system and a crude oil tank cleaning system applied to a crude oil tank complex.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of cleaning a crude oil tank water and its system according to the present invention will be described in detail with reference to the drawings.
Before describing the present invention in more detail,
While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.
In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
The crude oil tank water cleaning method according to the present invention will be briefly described with reference to FIG. 1, and the crude oil tank water cleaning system according to the present invention will be described in detail with reference to FIG. 2 and subsequent drawings. Explain.
First, the
In order to limit the falling range of the
1, the
The inert gas injection step S10 injects an inert gas into the
Since the
In the cleaning operation preparation step S20, equipment constituting the system according to the present invention is installed in the
In the washing water charging step (S30), washing water is introduced into the crude oil tank (10). At this time, the washing water is injected into the
For the sake of simplicity, it is to be understood that the present invention is not limited to the above-described embodiments. will be.
In the steam discharging step S40, the
In the high-pressure water discharging step S50, the high-pressure high-pressure water is discharged to the bottom of the
At this time, it is preferable that the high-pressure water is at least 50 degrees so that the
In the mixed water discharge step (S60), the sludge (1), which is melted and decomposed by the discharge of steam and high-pressure water, is discharged to the outside. That is, mixed water, which is a mixture of washing water, steam, high-pressure water, and the melted
At this time, the high-pressure water is continuously discharged even while the mixed water is discharged to the outside. For reference, the high-pressure water may be not only the high-pressure water in the high-pressure water discharging step but also the water to be supplied for maintaining the water level.
It is preferable that the mixed water discharge the mixed water in the upper layer having a high density of the
When the amount (height) of the
In this case, after the discharge of mixed water is stopped, the steam discharging step S40, the high-pressure water discharging step S50 and the mixed water discharging step S60 are repeated to separate the
When the concentration of the
In the mixed water purification step S100, the mixed water discharged through the mixed water discharge step S60 and subsequent steps is purified and separated into waste oil, wastewater and solid incineration water.
The separated and refined waste oil is recycled as oil and the wastewater is recycled to the
In the finishing work step S90, the concentration of the
In the finishing work step S90, the inside of the
Hereinafter, the crude oil tank water cleaning system according to the present invention will be described in more detail with reference to FIG. 2 and subsequent drawings. Hereinafter, the cleaning method as well as the cleaning method will be more clearly understood.
The cleaning system according to the present invention comprises a
Hereinafter, the equipment (constituent elements) of the cleaning system will be described in accordance with the cleaning order.
Gas injection means is provided to inject an inert gas into the
The gas injecting means includes a
The
When the stability of the
The
The
The
It is preferable that the
The
The steam generated in the
The branching
The upper part of the
Since the position of the floating
The high-
At this time, the high-pressure water is used at a high temperature (for example, 50 ° C or higher) through the
The
The
The
The
The
The
The
The rotary shaft is rotated by the water pressure of the rotational speed discharged through the discharge port, and discharges the rotational water from the bottom center point of the
The mixed water having the
Thereafter, the manhole mounted on the
The purifier (90) purifies the mixed water discharged through the drain pump (70) and separates it into waste oil, wastewater and solid incineration water.
The mixed water discharged through the
The
The separated wastewater is supplied to the
9 schematically shows a crude oil natural refining system and a crude oil tank cleaning system applied to a crude oil tank complex.
First, the natural refining system for crude oil includes a plurality of large
Thus, the crude oil pumped from the underground is injected into the lower side of the first
Since the crude oil
The efficiency and economical efficiency of the crude oil tank cleaning can be doubled by applying the natural refining system as described above to the crude oil
Then, the crude oil
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims. Should be construed as falling within the scope of protection of the present invention.
10: Crude oil tank 20: Water tank
30: water pump 40: boiler
50: Air motor 60: High pressure pump
70: Drain pump 80: Rotary member
90: Purification apparatus 100: Regeneration pump
120: branching device 130: collection tank
Claims (10)
A high-pressure water discharging step of discharging high-pressure high-pressure water to the bottom of the crude oil tank to mix the molten sludge with the washing water after the washing water charging step;
And discharging the mixed water to the outside while continuously discharging the high-pressure water to the bottom of the crude oil tank.
Further comprising: a steam discharging step of discharging high temperature steam to the bottom of the crude oil tank to melt the sludge after the washing water charging step.
When the sludge concentration of the discharged mixed water falls below a predetermined value, the mixed water is continuously discharged into the bottom of the crude oil tank from the center to the bottom of the crude oil tank so that the mixed water is concentrated at the edge of the crude oil tank; Further comprising the steps of:
And a mixed water purification step of purifying the discharged mixed water and separating the mixed water into waste oil, wastewater and solid incineration water.
Wherein the wastewater separated and purified in the mixing water purification step is reused in the cleaning operation of the crude oil tank.
Pressure pump for discharging high-pressure high-pressure water to the bottom of the crude oil tank;
And a drain pump for discharging mixed water in which the washing water and the high-pressure water are mixed with the molten sludge from the crude oil tank.
Further comprising: a boiler for making high-temperature steam discharged to the bottom of the crude oil tank.
Further comprising a rotary member for supplying the rotary water from the center to the bottom of the crude oil tank so that the mixed water is concentrated to the edges of the crude oil tank.
Further comprising a purifier for separating and purifying the mixed water discharged through the drain pump into waste oil, wastewater and solid incineration water.
And a regeneration pump for supplying waste water separated and purified in the purifier to a water tank.
Priority Applications (1)
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KR1020150055688A KR20160125046A (en) | 2015-04-21 | 2015-04-21 | Water washing method and system for crude oil tank equipped with natural purification system |
Applications Claiming Priority (1)
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KR1020150055688A KR20160125046A (en) | 2015-04-21 | 2015-04-21 | Water washing method and system for crude oil tank equipped with natural purification system |
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Publication Number | Publication Date |
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KR20160125046A true KR20160125046A (en) | 2016-10-31 |
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KR1020150055688A KR20160125046A (en) | 2015-04-21 | 2015-04-21 | Water washing method and system for crude oil tank equipped with natural purification system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113953735A (en) * | 2021-12-10 | 2022-01-21 | 汤晓俊 | Oil tank welding robot |
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2015
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113953735A (en) * | 2021-12-10 | 2022-01-21 | 汤晓俊 | Oil tank welding robot |
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