CN208649082U - A kind of oil base drilling wastes supercritical fluid extraction separating treatment system - Google Patents
A kind of oil base drilling wastes supercritical fluid extraction separating treatment system Download PDFInfo
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- CN208649082U CN208649082U CN201820396804.1U CN201820396804U CN208649082U CN 208649082 U CN208649082 U CN 208649082U CN 201820396804 U CN201820396804 U CN 201820396804U CN 208649082 U CN208649082 U CN 208649082U
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Abstract
The utility model provides a kind of oil base drilling wastes supercritical fluid extraction separating treatment system, which includes extractor, and greasy filth import, reactant import, solid-phase outlet and liquid-phase outlet are offered on tank skin, is provided with disturbing flow device in tank；Greasy filth holding vessel, extractant source, separator and solid phase collecting tank.The oil base drilling wastes supercritical fluid extraction separating treatment system, realizes separation and purification containing pollutant, realizes free of contamination discharge, while realizing the continuous circulation of processing system, improve treatment effeciency, reduce processing cost.
Description
Technical field
The utility model relates to drilling wastes purification treatment technology fields, and in particular to a kind of oil base drilling wastes face
Boundary's fluid extraction separating treatment system.
Background technique
In exploitation of oil-gas field operation process, largely discarded oil-base mud and abandoned oil basement rock bits can be all generated every year, this
Oneself is included in " National Hazard waste catalogue " a little oily sludge objects, belongs to Poisoning, flammable material, if containing pollutant without processing
It is discharged into environment, soil, water quality can be caused seriously to pollute, harmless treatment is carried out to these wastes, to protect us to rely
The environment of existence is most important.Therefore it provides a kind of oil base drilling wastes supercritical fluid extraction separating treatment system, to reality
Now separation and purification containing pollutant realize non-pollution discharge, while realizing the continuous circulation of processing system, improve processing effect
Rate reduces processing cost, just becomes those skilled in the art's urgent problem to be solved.
Utility model content
The purpose of the utility model is to provide a kind of oil base drilling wastes supercritical fluid extraction separating treatment system, to
It realizes separation and purification containing pollutant, realizes non-pollution discharge, while realizing the continuous circulation of processing system, raising processing
Efficiency reduces processing cost.
In order to solve the above-mentioned technical problem, the utility model provides a kind of oil base drilling wastes supercritical fluid extraction separation
Processing system, comprising:
Extractor offers greasy filth import, reactant import, solid-phase outlet and liquid-phase outlet, setting in tank on tank skin
There is disturbing flow device；
Greasy filth holding vessel, arrival end are connected with greasy filth source, and the greasy filth import of outlet end and the extractor passes through the
One pipeline is connected, and the greasy filth to be processed in the greasy filth holding vessel is by entering the extractor through first pipeline；
Extractant source, outlet end are connected by the second pipeline with the reactant import of the extractor, the extraction
Fluid extractant in agent source generates above-critical state gas after the processing of temperature and pressure adjuster, and the above-critical state gas is through described second
Pipeline enters the extractor and is in contact with the greasy filth to be processed in pipe；
Separator, input end are connected with the liquid-phase outlet of the extractor, and liquid-phase outlet end and extract store
Tank is connected, and the liquid phase mixture that reaction generates in the extractor is stored through the liquid-phase outlet end into the extract
The gaseous phase outlet end of tank, the separator is connected through liquefied pot with the extractant source；
Solid phase collecting tank is connected with the solid-phase outlet of the extractor.
During the work time, extractant is continuously injected into temperature and pressure adjuster from reservoir first, and in temperature and pressure adjuster
Liquid extractant is adjusted to the supercriticality needed by the interior adjustment by temperature and pressure；The extraction of parameter will then be mixed up
The further temperature-adjustment pressure-adjustment of buffer of the feeding critical gas of agent continuous uniform, becomes stable critical fluids；It will stablize
Critical fluids (extractant) continuous uniform feeding extractor in, connect extractant with oil base drilling wastes (i.e. greasy filth)
Touching；Extractant in critical state has high osmosis and good molten oiliness, and extractant is molten under the action of action of forced stirring
Solution absorbs oil and its oil-soluble inorganic agent, and quickly forms saturation state, while oil base drilling wastes are continuous in extractor
The component of oil is gradually lost in uniform flow process, final continuous uniform enters in high pressure discharger and is separated extraction
Take tank；The extractant critical fluids for forming saturation state dissolved matter enter separator by pipeline continuous uniform, due to separation
The distinctive function of device, by controlling the decline of its pressure or the raising variation of temperature, so that extractant loses rapidly critical fluids
State, the extractant for losing critical fluids state quickly form gas, and the extract of dissolution is precipitated rapidly to be become with extractant
Two-phase (liquid, gas) and be immediately disconnected；The separation of extract can then be realized by controlling the variation of separator pressure and temperature
Automatically it is precisely controlled, reaches refinement separation product；The extractant come out from separator, the characteristic for having lost critical fluids are in
Pure gaseous state can be recycled by purification filtering；Extractant by purification filtering enters liquefying plant, send after liquefaction
Enter spare in extractant reservoir.
In this way, greasy filth is continuously injected into extractor after pretreatment in the separating treatment system and method, system injection
Critical fluids (i.e. the extract liquor of vapour-liquid critical state) are simultaneously pressurized to scheduled pressure spot, and oil base drilling wastes are acted in extractant
Under, soluble ingredient enters critical fluids phase.Flow continually out the critical fluids of extractor mutually through decompression, temperature adjustment, optionally from
Critical fluids mutually isolate each component of extract, and extractant is recycled through temperature adjustment and collapsing back in extractor again.Entirely
Separating and extracting process process, which is modulated by extractant, extraction, separated, extractant recycling circulation four is most of forms, specific warm
It under degree and pressure, comes into full contact with oil base drilling wastes with supercritical fluid extraction agent, after reaching balance, then passes through temperature and pressure
The variation of power separates extract with extractant, and extractant is recycled, so that entire technical process is continuous.
The oil base drilling wastes supercritical fluid extraction separating treatment system realizes the separation containing pollutant and net
Change, realizes free of contamination discharge, while realizing the continuous circulation of processing system, improve treatment effeciency, reduce processing
Cost.
Further, the extractant source includes reservoir, the temperature and pressure adjuster being connected with the reservoir, and with institute
The buffer tank that temperature and pressure adjuster is connected is stated, the buffer tank is connected by second pipeline with the extractor.
It further, further include discharger, the discharger is set between the extractor and the solid phase collecting tank,
The feed inlet of the discharger is connected with the solid-phase outlet of the extractor, and discharge port is connected with the solid phase collecting tank
It is logical.
Further, the separator is at least two, and each separator is arranged in series.
Further, filter is additionally provided between the gaseous phase outlet end and the liquefied pot of the separator.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of extraction and separation processing system provided by the utility model.
In figure, solid arrow is the flow direction of greasy filth or greasy filth ingredient, and dotted arrow is the flow direction of extract liquor.
Description of symbols:
1- extractor
2- greasy filth holding vessel
3- greasy filth source
4- reservoir
5- buffer tank
6- temperature and pressure adjuster
7- separator
8- extract holding vessel
9- liquefied pot
10- solid phase collecting tank
11- discharger
12- filter
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
Referring to FIG. 1, Fig. 1 is a kind of knot of specific embodiment of extraction and separation processing system provided by the utility model
Structure schematic diagram.
In a specific embodiment, at oil base drilling wastes supercritical fluid extraction separation provided by the utility model
Reason system, including extractor 1, greasy filth holding vessel 2, extractant source, separator 7 and solid phase collecting tank 10；Wherein, extractor 1
Greasy filth import, reactant import, solid-phase outlet and liquid-phase outlet are offered on tank skin, are provided with disturbing flow device in tank；Greasy filth storage
The arrival end for depositing tank 2 is connected with greasy filth source 3, and outlet end is connected with the greasy filth import of the extractor 1 by the first pipeline,
Greasy filth to be processed in the greasy filth holding vessel 2 is by entering the extractor 1 through first pipeline；The outlet in extractant source
End is connected by the second pipeline with the reactant import of the extractor 1, and the fluid extractant in the extractant source is through temperature
Above-critical state gas is generated after pressing adjuster 6 to handle, which enters the extractor 1 simultaneously through second pipeline
It is in contact with the greasy filth to be processed in pipe；The input end of separator 7 is connected with the liquid-phase outlet of the extractor 1, liquid phase
Outlet end is connected with extract holding vessel 8, and the liquid phase mixture that reaction generates in the extractor 1 is through the liquid-phase outlet end
Into the extract holding vessel 8, the gaseous phase outlet end of the separator 7 is connected through liquefied pot 9 with the extractant source；Gu
Phase collecting tank 10 is connected with the solid-phase outlet of the extractor 1.
Extractor 1 is the pressure vessel of horizontal slim-lined construction, and design has action of forced stirring device inside it, forces extractant
Reverse flow is formed with oil base drilling wastes, will pass through flow-disturbing and reverse flow, improves contact journey of the extractant with greasy filth
Degree, to guarantee adsorption effect.
Above-mentioned separator 7 can be set it is multiple, to separate a variety of different products according to demand, specifically, according to each point
From different temperatures and pressure that device 7 is set, specific product can be isolated in the separator 7, under remaining mixture enters
The reaction was continued for primary separator 7；As shown in Figure 1, the separator 7 provided in the present embodiment is two, and two separators 7 are connected
Setting.
During the work time, extractant is continuously injected into from reservoir 4 temperature and pressure adjuster 6 first, and is adjusted in temperature and pressure
By the adjustment of temperature and pressure in device 6, liquid extractant is adjusted to the supercriticality needed；The extraction of parameter will then be mixed up
The further temperature-adjustment pressure-adjustment of buffer for taking the feeding critical gas of agent continuous uniform, becomes stable critical fluids；It will be steady
In the feeding extractor 1 of fixed critical fluids (extractant) continuous uniform, make extractant and oil base drilling wastes (i.e. greasy filth)
Contact；Extractant in critical state has high osmosis and good molten oiliness, extractant under the action of action of forced stirring
Oil and its oil-soluble inorganic agent are dissolved and absorbed, and quickly forms saturation state, while oil base drilling wastes connect in extractor 1
Continue the component that oil is gradually lost in uniform flow process, final continuous uniform is entered in high pressure discharger 11 and separated
Extractor 1 out；The extractant critical fluids for forming saturation state dissolved matter enter separator 7 by pipeline continuous uniform, by
In the distinctive function of separator 7, by controlling the decline of its pressure or the raising variation of temperature, so that extractant loses rapidly
Critical fluids state, the extractant for losing critical fluids state quickly form gas, and the extract of dissolution is precipitated rapidly and extraction
Agent is taken to become two-phase (liquid, gas) and be immediately disconnected；The separation of extract can then pass through the change of control 7 pressure and temperature of separator
Change and realize and be precisely controlled automatically, reaches refinement separation product；The extractant come out from separator 7, has lost critical flow
The characteristic of body is in pure gaseous state, can be recycled by purification filtering；Extractant by purification filtering enters liquefaction dress
It sets, is sent into after liquefaction spare in extractant reservoir 4.
In this way, greasy filth is continuously injected into extractor 1 after pretreatment in the separating treatment system, system injection is critical
Fluid (i.e. the extract liquor of vapour-liquid critical state) is simultaneously pressurized to scheduled pressure spot, oil base drilling wastes extractant effect under,
Soluble ingredient enters critical fluids phase.The critical fluids of extractor 1 are flowed continually out mutually through decompression, temperature adjustment, optionally from facing
Boundary's fluid phase separation goes out each component of extract, and extractant is recycled through temperature adjustment and collapsing back in extractor 1 again.Entire point
From extraction process flow by extractant modulation, extraction, separation, extractant recycling circulation four is most of forms, in specific temperature
It under pressure, comes into full contact with oil base drilling wastes with supercritical fluid extraction agent, after reaching balance, then passes through temperature and pressure
Variation, separate extract with extractant, extractant is recycled, so that entire technical process is continuous.
The oil base drilling wastes supercritical fluid extraction separating treatment system realizes the separation containing pollutant and net
Change, realizes free of contamination discharge, while realizing the continuous circulation of processing system, improve treatment effeciency, reduce processing
Cost.
Specifically, the extractant source include reservoir 4, the temperature and pressure adjuster 6 that is connected with the reservoir 4, and with
The buffer tank 5 that the temperature and pressure adjuster 6 is connected, the buffer tank 5 are connected by second pipeline with the extractor 1
It is logical；After extractant is exported from its extractant source, it is introduced into reservoir 4, is adjusted by temperature and pressure adjuster 6 to pre- after stablizing
If temperature and pressure after, into buffer tank 5 continue adjust pressure and temperature, until after stable state enter extractor 1 in use, with guarantee
In stable condition, the raising reaction effect of extractant.
The processing system further includes discharger 11, and the discharger 11 is set to the extractor 1 and collects with the solid phase
Between tank 10, the feed inlet of the discharger 11 is connected with the solid-phase outlet of the extractor 1, discharge port and the solid phase
Collecting tank 10 is connected.The solid state component that greasy filth generates after processing enters solid phase collecting tank 10 after the taking-up of discharger 11, with
Improve flow path efficiency.
It is additionally provided with filter 12 between the gaseous phase outlet end and the liquefied pot 9 of above-mentioned separator 7, in this way, through excessive
From treated the gaseous state extractant of device 7 after the cleaning of filter 12, it can return to the recycling of liquefied pot 9, improve the benefit of extractant
With rate, and it ensure that the cleanliness of reflux extraction agent.
Above-mentioned each equipment can be adjusted temperature and pressure in real time, to make extractant enter supercriticality.It should
Understand, supercritical fluid (SCF) described in text refers to the fluid more than critical-temperature and critical pressure, is higher than stagnation temperature
Degree and critical pressure and the state close to critical point is known as supercriticality.When in a supercritical state, gas-liquid two-phase property is non-
Very close to, so that it cannot differentiate, therefore referred to as SCF.Supercritical fluid dissolves substance and isolated process just cry it is super
Supercritical fluid extraction.The substance that can be used as supercritical fluid extraction agent has very much, and the present embodiment is by taking carbon dioxide as an example, titanium dioxide
Because its supercritical temperature is close to room temperature nontoxic, tasteless, colourless, non-ignitable, chemical inertness, high-pure gas is easily made in carbon, and former
Expect from a wealth of sources inexpensive, and is widely used as extractant.
It should be pointed out that present invention utilizes supercritical fluid extraction principles, but have any different, mainly use compared with
Low extraction temperature and pressure (in critical-temperature or critical pressure hereinafter, close to critical-temperature or pressure), i.e., it is attached in critical point
In close subcritical or supercritical range.It is characterized in that critical-temperature or the one of parameter value of critical pressure are critical lower than its
The value of temperature or critical pressure.The critical state mentioned in text refers to this state.
Recommend to select carbon dioxide as extractant in the present invention, relative to other extractants, it has following special
Point:
A, critical-temperature and critical pressure are low (Tc=31.1 DEG C, Pc=7.38MPa), and operating condition is mild, in critical shape
Under state, carbon dioxide has selective dissolution, and excellent dissolubility is revealed to oil meter.It is therefore particularly suited for handling discarded oil base
Mud and abandoned oil basement rock bits；
B, carbon dioxide be considered as with cheap organic solvent nontoxic as water phase, it is stable, nontoxic in extraction process,
It is free from environmental pollution, and belong to non-flammable gases, safety is very good；
C, nitrate and harmful heavy metal, and the residual without harmful extractant are free of in the extract of carbon dioxide；
D, when critical carbon dioxide extracts, the substance being extracted can be precipitated by reducing pressure or increasing temperature, it is not necessary to
By extracting operation repeatedly, so critical carbon dioxide extraction procedure is simple.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (5)
1. a kind of oil base drilling wastes supercritical fluid extraction separating treatment system characterized by comprising
Extractor (1) offers greasy filth import, reactant import, solid-phase outlet and liquid-phase outlet on tank skin, is provided in tank
Disturbing flow device；
Greasy filth holding vessel (2), arrival end are connected with greasy filth source (3), and the greasy filth import of outlet end and the extractor (1) is logical
It crosses the first pipeline to be connected, the greasy filth to be processed in the greasy filth holding vessel (2) is by entering the extraction through first pipeline
Take tank (1)；
Extractant source, outlet end are connected by the second pipeline with the reactant import of the extractor (1), the extractant
Fluid extractant in source generates above-critical state gas after temperature and pressure adjuster (6) processing, and the above-critical state gas is through described the
Two pipelines enter the extractor (1) and are in contact with the greasy filth to be processed in pipe；
Separator (7), input end are connected with the liquid-phase outlet of the extractor (1), and liquid-phase outlet end and extract store up
It deposits tank (8) to be connected, the liquid phase mixture that reaction generates in the extractor (1) enters the extraction through the liquid-phase outlet end
The gaseous phase outlet end of object holding vessel (8), the separator (7) is connected through liquefied pot (9) with the extractant source；
Solid phase collecting tank (10) is connected with the solid-phase outlet of the extractor (1).
2. oil base drilling wastes supercritical fluid extraction separating treatment system according to claim 1, which is characterized in that institute
Stating extractant source includes reservoir (4), the temperature and pressure adjuster (6) being connected with the reservoir (4), and is adjusted with the temperature and pressure
The buffer tank (5) that device (6) is connected, the buffer tank (5) are connected by second pipeline with the extractor (1).
3. oil base drilling wastes supercritical fluid extraction separating treatment system according to claim 1, which is characterized in that also
Including discharger (11), the discharger (11) is set between the extractor (1) and the solid phase collecting tank (10), described
The feed inlet of discharger (11) is connected with the solid-phase outlet of the extractor (1), discharge port and the solid phase collecting tank
(10) it is connected.
4. oil base drilling wastes supercritical fluid extraction separating treatment system according to claim 1, which is characterized in that institute
Stating separator (7) is at least two, and each separator (7) is arranged in series.
5. oil base drilling wastes supercritical fluid extraction separating treatment system according to claim 1, which is characterized in that institute
It states and is additionally provided with filter (12) between the gaseous phase outlet end of separator (7) and the liquefied pot (9).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409075A (en) * | 2018-03-23 | 2018-08-17 | 李凡 | A kind of oil base drilling wastes supercritical fluid extraction separating treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409075A (en) * | 2018-03-23 | 2018-08-17 | 李凡 | A kind of oil base drilling wastes supercritical fluid extraction separating treatment system and method |
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