CN107601807B - A kind of discarded oil-based drilling mud processing system and method - Google Patents
A kind of discarded oil-based drilling mud processing system and method Download PDFInfo
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Abstract
The invention discloses a kind of discarded oil-based drilling mud processing system and methods, belong to industrial waste processing technology field.The method of the present invention is low in cost, equipment is simple, it can be realized efficiently separating for oil in greasy filth, water and residue, it can be used for the Oil Recovery and harmless treatment of Discarded Drilling Materials oil-base mud, tank bottom oil sludge or the larger oil sludge of other water content, it is particularly suitable for the higher greasy filth of oil content, Oil Recovery efficiency may be up to 99%, economic benefit, social benefit and environmental benefit are had both, is a kind of improvement to the prior art.
Description
Technical field
The present invention relates to industrial waste processing technology field, particularly relate to a kind of discarded oil-based drilling mud processing system and
Method.
Background technique
Discarded Drilling Materials oil-base mud is the solid pollutant generated in oil-gas mining and drilling process, and comparison of ingredients is multiple
It is miscellaneous, it is made of clay, weighting material, various chemical treatments, sewage, mineral oil, phenolic compound, heavy metal and landwaste etc.
A kind of complicated heterogeneous system, leachate has compared with high toxicity.With the exploration and exploitation of China's oil gas field, oil drilling production
A large amount of Discarded Drilling Materials oil-base mud will be generated daily, and a large amount of Discarded Drilling Materials oil-base mud generated are with colloid and semisolid
State exists and invariance in long-time, occupies a large amount of soils, seriously pollutes environment.For a long time, oilfield drilling generates
Discarded oil-base mud is always that there has been no the main oily sludge pollution sources of preferable treating method in the process for domestic and international production of hydrocarbons
One of.Discarded Drilling Materials oil-base mud direct emission influences whether the nutrient environment condition and its quality of plant growth, long-term to accumulate
It will cause the serious destruction of surface vegetation, contaminated soil and water source, finally jeopardize the health and existence of the mankind.
Currently, the processing technique of oily sludge is varied, every kind of process has its respective advantage and disadvantage, applicable pair
As and the scope of application.Common processing method has solvent extraction, incineration method, bioanalysis, pyrogenic process, oily sludge profile control, contains
Greasy dirt comprehensive utilization etc..Wherein, the technologies such as burning, biochemical, coking and profile control, although having done innoxious place to oily sludge
Reason, but all great waste is produced to resource, so the main processing ways promoted in the industry are money without carrying out Oil Recovery
Source recovery technology.Although solvent extraction realizes the recycling to petroleum resources, because extractant uses in its extraction process
Measure huge, extractant is with high costs, and generally requires repeatedly that extracting operation could reduce oil content in greasy filth, processing cost repeatedly
Height is difficult to promote the use of on a large scale.Increasingly strict and facing mankind the fossil energy required with national emission reduction is in short supply to ask
Topic discards the place of oil-base mud to make the processing of Discarded Drilling Materials oil-base mud realize better resource utilization and environmentally friendlyization
Reason needs to be paid attention to, and better method and technology are also required in terms of the subsequent processing of discarded slurry.
Summary of the invention
In view of this, the present invention proposes a kind of discarded oil-based drilling mud processing system and method, it can be to discarded brill
Oil product in well oil-base mud, tank bottom oil sludge or the larger oil sludge of other water content carries out high efficiente callback, while realizing that greasy filth is arranged
Harmless treatment before putting.
Based on above-mentioned purpose, present invention provide the technical scheme that
A kind of discarded oil-based drilling mud processing system, the system is for dividing oil, water, the slag ingredient in greasy filth
From, including broken screening subsystem, slurrying subsystem, oil purification subsystem, washery slag subsystem and pyrolytic carbon sub-systems；Institute
Stating broken screening subsystem includes crusher, drum screen and the desludging pump for greasy filth to be delivered to drum screen from crusher,
The crusher is equipped with the first demulsifier chemicals dosing plant and the first priming apparatus, the on-the-sieve material and screenings of the drum screen
Material is transferred to different slurrying subsystems by corresponding transmission mode respectively；The slurrying subsystem includes for by material
The stirring pulping machine of mud is made and mud is carried out to clean isolated mud cleans seperator, is set on the stirring pulping machine
There are the second demulsifier chemicals dosing plant, the first dispersing agent chemicals dosing plant and the second priming apparatus, by the mud cleans seperator point
The dregs of fat and oil-containing liquid phase separated out are transferred to washery slag subsystem and oil purification subsystem by corresponding transmission mode respectively；Institute
State washery slag subsystem include for the dregs of fat carry out de-oiling washery slag device and the mixed phase after de-oiling is separated three
Phase screw centrifuge, the washery slag device are equipped with de-oiling agent chemicals dosing plant, are contained by what the three-phase screw centrifuge was isolated
Oil liquid phase and the dregs of fat are transferred to the oil purification subsystem respectively by corresponding transmission mode and the pyrolytic carbon beggar is
System；The oil purification subsystem includes first class purification separation system, secondary purification separation system, two-phase screw centrifuge and disk
Centrifuge, the first class purification separation system are equipped with the first flocculant chemicals dosing plant, set in the secondary purification separation system
Have the second flocculant chemicals dosing plant, the first class purification separation system will by flocculation and oil obtained after separation, the dregs of fat and
Oil-containing liquid phase is respectively transmitted to heat preservation precipitation and purification tank, the washery slag subsystem and the second level by corresponding transmission mode
In purification separation system, the secondary purification separation system will be by flocculation and oil obtained after separation, the dregs of fat and containing oil liquid
The heat preservation precipitation and purification tank, the pyrolytic carbon sub-systems and described two are mutually respectively transmitted to by corresponding transmission mode
In phase screw centrifuge, the isolated dregs of fat and oil-containing liquid phase are passed through corresponding transmission mode by the two-phase screw centrifuge
It is respectively delivered in the pyrolytic carbon sub-systems and the disk plate centrifuge, the disk plate centrifuge is by isolated oil
Matter, waste water and the dregs of fat are respectively transmitted to the heat preservation precipitation and purification tank, water circulation system and institute by corresponding transmission mode
It states in pyrolytic carbon sub-systems；The pyrolytic carbon sub-systems are by the hydrocarbons that pyrolysis obtains and waste water by transmitting accordingly
Mode is respectively transmitted in the heat preservation precipitation and purification tank and water circulation system；The water circulation system adds with described first respectively
Water installations are connected with the second priming apparatus.
In addition, this method is based on discarded oil base drilling well mud as described above the present invention also provides a kind of oil-sludge treatment method
Starch processing system comprising following steps:
(1) greasy filth is transmitted in crusher, demulsifier and hot water is added in crusher, greasy filth is crushed；
(2) broken greasy filth is transmitted in drum screen, on-the-sieve material and undersize material is passed through into different systems respectively
Slurry subsystem is handled；
(3) it in a slurrying subsystem, by material transferring into stirring pulping machine, and is added and breaks into stirring pulping machine
Emulsion, dispersing agent and hot water are stirred slurrying to material；
(4) mud is transmitted in mud cleans seperator, mud is separated into oil-containing liquid phase and the dregs of fat, and respectively containing
Oil liquid phase and the dregs of fat are transmitted in oil purification subsystem and washery slag subsystem；
(5) in washery slag subsystem, the dregs of fat are transmitted in washery slag device, and de-oiling agent is added into washery slag device；
(6) mixed material in washery slag device is transferred in three-phase screw centrifuge and is separated, and will isolated
Oil-containing liquid phase and the dregs of fat are respectively transmitted in oil purification subsystem and pyrolytic carbon sub-systems；
(7) in oil purification subsystem, oil-containing liquid phase is transferred in first class purification separation system, and is divided to first class purification
From flocculant and hot water are added in system, it is separated after the flocculation of oil-containing liquid phase, obtained oil is transferred to heat preservation
It is recycled in precipitation and purification tank, the dregs of fat is re-transmitted in washery slag subsystem, and the oil-containing liquid phase isolated is transferred to
In secondary purification separation system；
(8) flocculant and hot water are added into secondary purification separation system, it is separated after the flocculation of oil-containing liquid phase,
Obtained oil is transferred in heat preservation precipitation and purification tank and is recycled, the dregs of fat are transferred in pyrolytic carbon sub-systems, and will
The oil-containing liquid phase isolated is transferred in two-phase screw centrifuge；
(9) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by two-phase screw centrifuge, and will isolate grease
Mixed phase is transferred in disk plate centrifuge；
(10) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by disk plate centrifuge, and the oil isolated is transmitted
It is recycled into heat preservation precipitation and purification tank, and the waste water isolated is transferred in water circulation system；
(11) it in pyrolytic carbon sub-systems, is pyrolyzed carbonizing plant and high temperature cabonization is carried out to the dregs of fat, generated in carbonisation
Hydrocarbons are transferred in heat preservation precipitation and purification tank and are recycled, and the waste water of generation is transferred in water circulation system, and generation is given up
Slag carries out biochemical harmless processing or direct emission；
(12) waste water in water circulation system is transferred in crusher and stirring pulping machine and is recycled, reuse it is primary or
Sewage treatment plant is transported to afterwards twice to be handled.
Optionally, the temperature of the hot water is 60~80 degrees Celsius.
Optionally, the time for being stirred slurrying to material in the step (3) is 30~40 minutes.
Optionally, floating oil, frizing and the behaviour that is demulsified again are first carried out before being separated in the step (6) to mixed material
Make.
Optionally, in the step (7) and step (8) before flocculating to oil-containing liquid phase, floating oil and frizing are first carried out
Operation.
From narration above as can be seen that the beneficial effect of technical solution of the present invention is:
1, the present invention for most of greasy filth containing solid impurity the characteristics of more and large viscosity, devise broken screening, slurrying,
The mode that washery slag and oil purification combine, and two-stage greasy filth cleaning procedure is used during oil purification, it can be efficiently real
The separation of existing oil, water and body refuse, and realize the recycling to waste oil.
2, the present invention is different for the granularity of broken rear greasy filth, and on-the-sieve material and undersize material are done and handled respectively, thus
The abundant demulsification that can be realized greasy filth, improves subsequent separative efficiency.
3, the present invention has more set subsystems, and covers more and cooperate between subsystem, and rational technology is ingenious in design,
It is very high to the recovery efficiency of oil product in greasy filth, realize the near-zero release of pollutant.
In short, the method for the present invention is low in cost, equipment is simple, efficiently separating for oil in greasy filth, water and residue can be realized,
It can be used for the Oil Recovery and harmless treatment of Discarded Drilling Materials oil-base mud, tank bottom oil sludge or the larger oil sludge of other water content,
It is particularly suitable for the higher greasy filth of oil content, Oil Recovery efficiency may be up to 99%, have both economic benefit, social benefit and environment
Benefit is a kind of improvement to the prior art.
Detailed description of the invention
In order to clearly describe this patent, one or more attached drawing is provided below, these attached drawings are intended to this patent
Background technique, technical principle and/or certain specific embodiments make aid illustration.It should be noted that these attached drawings can
It some have been described and belongs to known in those of ordinary skill in the art often in this patent word segment to provide not providing
The detail of knowledge；Also, because those skilled in the art can combine the published word content of this patent completely
And/or accompanying drawing content, more attached drawings are designed in the case where not paying any creative work, therefore these attached drawings below
All technical solutions that this patent word segment is described can be covered or not cover.In addition, these attached drawings is specific interior
Contain and the word content in conjunction with this patent is needed to be determined, is tied when some in the word content and these attached drawings of this patent is obvious
When structure is not consistent, needing the narration of common knowledge and this patent other parts in conjunction with this field to carry out comprehensive descision on earth is this
There are exist to draw mistake in clerical mistake or attached drawing for the word segment of patent.Particularly, the following drawings is the figure of exemplary in nature
Piece, it is not intended that imply the protection scope of this patent, those skilled in the art are by reference to text disclosed in this patent
Word content and/or accompanying drawing content can design more attached drawings in the case where not paying any creative work, these are new
Technical solution representated by attached drawing is still within the protection scope of this patent.
Fig. 1 is a kind of process flow chart of the embodiment of the present invention.
Specific embodiment
Understanding for the ease of those skilled in the art to the art of this patent scheme, meanwhile, in order to make the technology of this patent
Purpose, technical scheme and beneficial effects are clearer, and support the protection scope of claims sufficiently, below with tool
The form of body case makes further, more detailed description to the technical solution of this patent.
As shown in Figure 1, a kind of discarded oil-based drilling mud processing system, the system be used for in greasy filth oil, water, slag at
It is separated, including broken screening subsystem, slurrying subsystem, oil purification subsystem, washery slag subsystem and pyrolysis carbonization
Subsystem；The broken screening subsystem includes crusher, drum screen and for greasy filth to be delivered to drum screen from crusher
Desludging pump, the crusher be equipped with the first demulsifier chemicals dosing plant and the first priming apparatus, the oversize of the drum screen
Material and undersize material are transferred to different slurrying subsystems by corresponding transmission mode respectively；The slurrying subsystem includes
For material to be made to the stirring pulping machine of mud and carries out cleaning isolated mud cleans seperator, the stirring to mud
Pulper is equipped with the second demulsifier chemicals dosing plant, the first dispersing agent chemicals dosing plant and the second priming apparatus, clear by the mud
Wash the dregs of fat and oil-containing liquid phase is transferred to washery slag subsystem respectively by corresponding transmission mode and oil is net that seperator is isolated
Sub-systems；The washery slag subsystem include for the dregs of fat carry out de-oiling washery slag device and to the mixed phase after de-oiling into
The isolated three-phase screw centrifuge of row, the washery slag device is equipped with de-oiling agent chemicals dosing plant, by the three-phase screw centrifuge
The oil-containing liquid phase and the dregs of fat isolated are transferred to the oil purification subsystem and the heat by corresponding transmission mode respectively
Solution carbonization subsystem；The oil purification subsystem include first class purification separation system, secondary purification separation system, two-phase spiral from
Scheming and disk plate centrifuge, the first class purification separation system are equipped with the first flocculant chemicals dosing plant, the secondary purification point
It is equipped with the second flocculant chemicals dosing plant from system, the first class purification separation system will be by flocculation and oil obtained after separation
Matter, the dregs of fat and oil-containing liquid phase by corresponding transmission mode be respectively transmitted to heat preservation precipitation and purification tank, the washery slag subsystem with
And in the secondary purification separation system, the secondary purification separation system will be by flocculation and oil obtained after separation, oil
Slag and oil-containing liquid phase are respectively transmitted to the heat preservation precipitation and purification tank, the pyrolytic carbon sub-systems by corresponding transmission mode
And in the two-phase screw centrifuge, the two-phase screw centrifuge passes through the isolated dregs of fat and oil-containing liquid phase corresponding
Transmission mode be respectively delivered in the pyrolytic carbon sub-systems and the disk plate centrifuge, the disk plate centrifuge will separate
Obtained oil, waste water and the dregs of fat are respectively transmitted to the heat preservation precipitation and purification tank, water cyclic system by corresponding transmission mode
In system and the pyrolytic carbon sub-systems；The hydrocarbons that pyrolysis obtains and waste water are passed through phase by the pyrolytic carbon sub-systems
The transmission mode answered is respectively transmitted in the heat preservation precipitation and purification tank and water circulation system；The water circulation system respectively with institute
State the first priming apparatus and the connection of the second priming apparatus.
In order to protect equipment, the isolation of purified equipment in present treatment system is both needed to do abrasionproof and preservative treatment.
Still see Fig. 1, a kind of oil-sludge treatment method, this method is based on discarded oil-based drilling mud processing system as described above
System comprising following steps:
(1) greasy filth is transmitted in crusher, demulsifier and hot water is added in crusher, greasy filth is crushed；
(2) broken greasy filth is transmitted in drum screen, on-the-sieve material and undersize material is passed through into different systems respectively
Slurry subsystem is handled；
(3) it in a slurrying subsystem, by material transferring into stirring pulping machine, and is added and breaks into stirring pulping machine
Emulsion, dispersing agent and hot water are stirred slurrying to material；
(4) mud is transmitted in mud cleans seperator, mud is separated into oil-containing liquid phase and the dregs of fat, and respectively containing
Oil liquid phase and the dregs of fat are transmitted in oil purification subsystem and washery slag subsystem；
(5) in washery slag subsystem, the dregs of fat are transmitted in washery slag device, and de-oiling agent is added into washery slag device；
(6) mixed material in washery slag device is transferred in three-phase screw centrifuge and is separated, and will isolated
Oil-containing liquid phase and the dregs of fat are respectively transmitted in oil purification subsystem and pyrolytic carbon sub-systems；
(7) in oil purification subsystem, oil-containing liquid phase is transferred in first class purification separation system, and is divided to first class purification
From flocculant and hot water are added in system, it is separated after the flocculation of oil-containing liquid phase, obtained oil is transferred to heat preservation
It is recycled in precipitation and purification tank, the dregs of fat is re-transmitted in washery slag subsystem, and the oil-containing liquid phase isolated is transferred to
In secondary purification separation system；
(8) flocculant and hot water are added into secondary purification separation system, it is separated after the flocculation of oil-containing liquid phase,
Obtained oil is transferred in heat preservation precipitation and purification tank and is recycled, the dregs of fat are transferred in pyrolytic carbon sub-systems, and will
The oil-containing liquid phase isolated is transferred in two-phase screw centrifuge；
(9) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by two-phase screw centrifuge, and will isolate grease
Mixed phase is transferred in disk plate centrifuge；
(10) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by disk plate centrifuge, and the oil isolated is transmitted
It is recycled into heat preservation precipitation and purification tank, and the waste water isolated is transferred in water circulation system；
(11) it in pyrolytic carbon sub-systems, is pyrolyzed carbonizing plant and high temperature cabonization is carried out to the dregs of fat, generated in carbonisation
Hydrocarbons are transferred in heat preservation precipitation and purification tank and are recycled, and the waste water of generation is transferred in water circulation system, and generation is given up
Slag carries out biochemical harmless processing or direct emission；
(12) waste water in water circulation system is transferred in crusher and stirring pulping machine and is recycled, reuse it is primary or
Sewage treatment plant is transported to afterwards twice to be handled.
Finally, the oil product of recycling can be used as drilling fluid and be recycled or be sent to again the processing of oil plant freshening.
Optionally, the temperature of the hot water is 60~80 degrees Celsius.
Optionally, the time for being stirred slurrying to material in the step (3) is 30~40 minutes.
Optionally, floating oil, frizing and the behaviour that is demulsified again are first carried out before being separated in the step (6) to mixed material
Make.
Optionally, in the step (7) and step (8) before flocculating to oil-containing liquid phase, floating oil and frizing are first carried out
Operation.
By taking Discarded Drilling Materials oil-base mud as an example, it is net that entire process system is divided into broken screening subsystem, slurrying subsystem, oil
Sub-systems, washery slag subsystem, pyrolytic carbon sub-systems, detailed process operating process are as follows:
(1) it is crushed screening subsystem: being first sent to the Discarded Drilling Materials oil-base mud in feed reservoir by screw feeding machine
In horizontal crusher, appropriate demulsifier and 80 DEG C of warm water are separately added by medicine system and water charging system, passed through to oily sludge
It crosses after being sufficiently crushed, it is pumped into drum screen using greasy filth and is sieved, on-the-sieve material and undersize material respectively enter difference
Material pot in；
(2) slurrying subsystem: the greasy filth slurries in material pot are pumped into Horizontal stirring pulper by slurry oil, and are passed through
Chemicals dosing plant, device and hot-water cylinder are separately added into quantitative demulsifier, dispersing agent and 80 DEG C of warm water, and stirring is deployed into uniform slurries
It is sent into greasy filth slurry washing separator, initial gross separation goes out the dregs of fat and oil-containing liquid phase；
(3) oil purification subsystem: greasy filth is starched into the oil-containing liquid phase separated in washing separator and is pumped into primary oil purification
In device, appropriate flocculant and 80 DEG C of warm water, the oil isolated by allotment are separately added by chemicals dosing plant and water replanishing device
It is recovered into oil trap, the greasy filth slag to precipitate is sent into washery slag tank, remaining oil-containing liquid phase (with a small amount of dross) is sent into two
In grade reconditioner, above-mentioned primary oil clean unit operating process is repeated, it is sleeping that the oil-containing liquid phase after deploying again is sent into two-phase
It is separated in formula screw centrifuge, the oil mixing with water separated mutually is sent into disk plate centrifuge and carries out oil-water-slag again
Separation, and the oil separated is sent into heat preservation precipitation and purification tank, water is recyclable to apply or is sent to sewage treatment plant, centrifuge
The dregs of fat dregs of fat separated are sent in pyrolysis carbonizing plant；
(4) washery slag subsystem: greasy filth is starched to the dregs of fat separated in washing separator and level-one reconditioner and is sent into washery slag
In device, medicament is added by device, then dregs of fat mixture in washery slag device is sent into triphase horizontal screw centrifuge, warp
The oil liquid being centrifugated out, which is sent into level-one reconditioner, repeats the operation of oil-cleaning system unit, carries out the subsequent place of lube purification
Reason；
(5) pyrolytic carbon sub-systems: the dregs of fat separated by all centrifuges are all sent into pyrolysis carbonizing plant,
Sump oil therein is decomposed by high temperature cabonization, guarantees oil content < 3g/kg (0.3%) of the dregs of fat, reaches the discharge mark of agricultural sludge
Standard, the hydrocarbons recycling generated during pyrolysis carbonization are sent in heat preservation precipitation and purification tank, and water is recyclable to apply or be sent into dirt
Water treatment plant.
Using 1~2 time, then again the sewage that whole process generates can be used as the slurrying moisturizing circulation of postorder batches
It concentrates and is sent into qualified discharge after sewage treatment plant is handled.
As it can be seen that the technique realizes oil in Discarded Drilling Materials oil-base mud, the purification separation of water and residue and to oil product
Recycling, by actual measurement, the rate of recovery is up to 99%, also, whole set process and equipment have many advantages, such as that at low cost, equipment is simple.This
Outside, the method for the present invention can be applied not only to Discarded Drilling Materials oil-base mud, can also be applied to tank bottom oil sludge or other water content compared with
Big oil sludge Oil Recovery processing, is particularly suitable for the higher greasy filth of oil content.
In short, the present invention provides a kind of oil-water-slag separating technology for greasy filth, including following content: Discarded Drilling Materials
Oil-base mud raw material shines blanking and is admitted in Horizontal stirring pulper by broken and screening, and warm water and demulsification medicament is added, into
Row demulsification processing and homogenate fluidisation, the greasy filth slurries after demulsification, which are pumped into floating oil machine, to be separated by solid-liquid separation.Wherein, liquid phase is (main
For oil and water, contain a small amount of dross) to enter centrifuge by two-stage oil purification processing mechanically decoupled, and the dregs of fat are by the processing of depth washery slag
After be centrifugated, can be realized in greasy filth the separation of oil, water and slag, complete the recovery processing to waste oil.In this technique, demulsification system
Starching the mixed process time is 30~40 minutes；Floating oil separation, purification and washery slag are both needed to heat preservation at 60~80 DEG C, and other are normal
Temperature operation；Centrifuge separation is applied alone or is used in conjunction mode using decanter centrifuge and disk plate centrifuge and completed.
It is to be appreciated that be intended merely to facilitate this field common for the above-mentioned narration for this patent specific embodiment
Technical staff understands this patent scheme and the exemplary description enumerated, does not imply that the protection scope of this patent is limited solely to
In this few example, those of ordinary skill in the art completely can the art of this patent scheme is made fully understand under the premise of,
In the form of not paying any creative work, by taking combination technique feature, replacement to each example cited by this patent
More technical characteristics etc. mode is added in some technical characteristics, obtains more specific embodiments, all these specific implementations
Mode is within the covering scope of patent claims book, and therefore, these new specific embodiments also should be in this patent
Protection scope within.
In addition, this patent may also not enumerate some ordinary specific embodiments for the purpose for simplifying narration, this
A little schemes are that those of ordinary skill in the art can expect naturally after understanding the art of this patent scheme, it is clear that this
A little schemes should also be included within the protection scope of this patent.
For the purpose for simplifying narration, above-mentioned each specific embodiment may only up to for the extent of disclosure of technical detail
The degree that can voluntarily make a decision to those skilled in the art, that is, there is no disclosed technical detail for above-mentioned specific embodiment,
Those of ordinary skill in the art completely can be in the case where not paying any creative work, in filling for the art of this patent scheme
Divide under prompt, by means of textbook, reference book, paper, patent, audio-visual product etc., open source literature is completed, alternatively, this
A little details are the contents that can voluntarily make decision according to the actual situation under being generally understood of those of ordinary skill in the art.
As it can be seen that will not be impacted to the open adequacy of the art of this patent scheme even if these underground technical details.
In short, on the basis of combining explanation effect of the patent specification to claims protection scope, it is any
Fall into the specific embodiment of patent claims book covering scope, within the protection domain of this patent..
Claims (6)
1. a kind of discarded oil-based drilling mud processing system, which is characterized in that for being carried out to oil, water, the slag ingredient in greasy filth
Separation, including broken screening subsystem, slurrying subsystem, oil purification subsystem, washery slag subsystem and pyrolytic carbon sub-systems；
The broken screening subsystem includes crusher, drum screen and the greasy filth for greasy filth to be delivered to drum screen from crusher
Pump, the crusher are equipped with the first demulsifier chemicals dosing plant and the first priming apparatus, the on-the-sieve material and sieve of the drum screen
Lower material is transferred to different slurrying subsystems by corresponding transmission mode respectively；The slurrying subsystem includes for inciting somebody to action
Material is made the stirring pulping machine of mud and carries out cleaning isolated mud cleans seperator, the stirring pulping machine to mud
It is equipped with the second demulsifier chemicals dosing plant, the first dispersing agent chemicals dosing plant and the second priming apparatus, is separated by the mud cleans
The dregs of fat and oil-containing liquid phase that machine is isolated are transferred to washery slag subsystem and oil purification subsystem by corresponding transmission mode respectively
System；The washery slag subsystem includes separating for the washery slag device to dregs of fat progress de-oiling and to the mixed phase after de-oiling
Three-phase screw centrifuge, the washery slag device be equipped with de-oiling agent chemicals dosing plant, isolated by the three-phase screw centrifuge
Oil-containing liquid phase and the dregs of fat oil purification subsystem and the pyrolysis are transferred to by corresponding transmission mode respectively and are carbonized
Subsystem；The oil purification subsystem include first class purification separation system, secondary purification separation system, two-phase screw centrifuge and
Disk plate centrifuge, the first class purification separation system are equipped with the first flocculant chemicals dosing plant, the secondary purification separation system
It is equipped with the second flocculant chemicals dosing plant, the first class purification separation system will be by flocculation and oil obtained after separation, oil
Slag and oil-containing liquid phase are respectively transmitted to heat preservation precipitation and purification tank, the washery slag subsystem and described by corresponding transmission mode
In secondary purification separation system, the secondary purification separation system will pass through flocculation and oil obtained after separation, the dregs of fat and contain
Oil liquid is mutually respectively transmitted to the heat preservation precipitation and purification tank, the pyrolytic carbon sub-systems and institute by corresponding transmission mode
It states in two-phase screw centrifuge, the two-phase screw centrifuge is by the isolated dregs of fat and oil-containing liquid phase by transmitting accordingly
Mode is respectively delivered in the pyrolytic carbon sub-systems and the disk plate centrifuge, and the disk plate centrifuge will be isolated
Oil, waste water and the dregs of fat by corresponding transmission mode be respectively transmitted to the heat preservation precipitation and purification tank, water circulation system and
In the pyrolytic carbon sub-systems；The pyrolytic carbon sub-systems are by the hydrocarbons that pyrolysis obtains and waste water by passing accordingly
Defeated mode is respectively transmitted in the heat preservation precipitation and purification tank and water circulation system；The water circulation system is respectively with described first
Priming apparatus and the connection of the second priming apparatus.
2. a kind of oil-sludge treatment method based on discarded oil-based drilling mud processing system as described in claim 1, feature exist
In, comprising the following steps:
(1) greasy filth is transmitted in crusher, demulsifier and hot water is added in crusher, greasy filth is crushed；
(2) broken greasy filth is transmitted in drum screen, on-the-sieve material and undersize material is passed through into different slurrying respectively
System is handled；
(3) in a slurrying subsystem, by material transferring into stirring pulping machine, and demulsification is added into stirring pulping machine
Agent, dispersing agent and hot water are stirred slurrying to material；
(4) mud is transmitted in mud cleans seperator, mud is separated into oil-containing liquid phase and the dregs of fat, and respectively containing oil liquid
Mutually it is transmitted in oil purification subsystem and washery slag subsystem with the dregs of fat；
(5) in washery slag subsystem, the dregs of fat are transmitted in washery slag device, and de-oiling agent is added into washery slag device；
(6) oil-containing for the mixed material in washery slag device being transferred in three-phase screw centrifuge and being separated, and will isolated
Liquid phase and the dregs of fat are respectively transmitted in oil purification subsystem and pyrolytic carbon sub-systems；
(7) in oil purification subsystem, oil-containing liquid phase is transferred in first class purification separation system, and to first class purification segregative line
Flocculant and hot water are added in system, it is separated after the flocculation of oil-containing liquid phase, obtained oil is transferred to heat preservation precipitating
It is recycled in purification pot, the dregs of fat is re-transmitted in washery slag subsystem, and the oil-containing liquid phase isolated is transferred to second level
In purification separation system；
(8) flocculant and hot water are added into secondary purification separation system, it is separated after the flocculation of oil-containing liquid phase, will
To oil be transferred to heat preservation precipitation and purification tank in recycled, the dregs of fat are transferred in pyrolytic carbon sub-systems, and will separation
Oil-containing liquid phase out is transferred in two-phase screw centrifuge；
(9) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by two-phase screw centrifuge, and will isolate oil mixing with water
Mutually it is transferred in disk plate centrifuge；
(10) dregs of fat isolated are transferred in pyrolytic carbon sub-systems by disk plate centrifuge, and the oil isolated is transferred to guarantor
It is recycled in warm precipitation and purification tank, and the waste water isolated is transferred in water circulation system；
(11) it in pyrolytic carbon sub-systems, is pyrolyzed carbonizing plant and high temperature cabonization, the hydro carbons generated in carbonisation is carried out to the dregs of fat
Mass transfer is recycled into heat preservation precipitation and purification tank, and the waste water of generation is transferred in water circulation system, the waste residue of generation into
The biochemical harmless processing of row or direct emission；
(12) waste water in water circulation system is transferred in crusher and stirring pulping machine and is recycled, and reuses once or twice
After be transported to sewage treatment plant and handled.
3. oil-sludge treatment method according to claim 2, which is characterized in that the temperature of the hot water is 60~80 Celsius
Degree.
4. oil-sludge treatment method according to claim 2, which is characterized in that be stirred in the step (3) to material
The time of slurrying is 30~40 minutes.
5. oil-sludge treatment method according to claim 2, which is characterized in that carried out in the step (6) to mixed material
Floating oil, frizing and demulsification operation again are first carried out before separation.
6. oil-sludge treatment method according to claim 2, which is characterized in that containing in the step (7) and step (8)
Before oil liquid is mutually flocculated, floating oil and frizing operation are first carried out.
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