CN109207190A - A kind of processing of the waste oil residue containing alchlor and oil recovery method - Google Patents
A kind of processing of the waste oil residue containing alchlor and oil recovery method Download PDFInfo
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- CN109207190A CN109207190A CN201710550908.3A CN201710550908A CN109207190A CN 109207190 A CN109207190 A CN 109207190A CN 201710550908 A CN201710550908 A CN 201710550908A CN 109207190 A CN109207190 A CN 109207190A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
- C10G29/02—Non-metals
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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Abstract
Processing and oil recovery method the invention discloses a kind of waste oil residue containing alchlor, this method are as follows: under agitation, acidification is carried out to waste oil residue containing alchlor with acid solution, be then allowed to stand sedimentation layering, upper oil phase recycles after being washed to neutrality；Wherein, the pH value of the acid solution is 0~3, and the volume ratio of the acid solution and the waste oil residue containing alchlor is 0.5:1~3:1.The present invention handles oil-containing alchlor waste oil residue using Acidizing Technology, during alchlor is soluble in the aqueous phase, solid granular oil clot will not more be generated, the solid granular oil clot that can be avoided in acid alchlor waste oil residue alkali neutralization technical process generates, and then avoids grease and be difficult to the phenomenon that separating generation.
Description
Technical field
The invention belongs to petrochemical industry, the method for being related to the Slag treatment of waste oil containing alchlor and oil recycling is especially suitable
It closes using alchlor as the waste oil residue containing alchlor that catalyst carries out olefin polymerization and generates, or for alchlor
The waste oil residue containing alchlor generated for catalyst alkylation reaction.
Background technique
Poly alpha olefin (PAO) is important one of synthetic lubricant fluid, compared with natural minerals base oil, PAO base oil tool
There are better greasy property and chemical stability, can satisfy in military affairs, needs high perofmrnace lubricating oils on aerospace field
Demand, and meet the development need of friendly environment society.Meanwhile synthesis PAO lube base oil also has liquid model
The advantages that wide, condensation point is low, viscosity index (VI) is high is enclosed, it is made to show clear superiority in machinery industry application.
Currently, the catalyst that synthesis PAO base oil uses mainly has homogeneous Lewis acid catalyst, ziegler-natta catalyzed
Agent, reduction chrome catalysts, metallocene catalyst and ionic-liquid catalyst etc..But since chromium metal catalytic activity is lower, to alkene
Hydrocarbon raw material requires harsh and has severe toxicity, is not suitable for industrialized production；Ionic-liquid catalyst is obtained as a kind of new catalyst
Extensive concern and the research of scientist are arrived, but since it is expensive, harshness is required to reaction condition, also needs further to visit
Study carefully.Thus, the catalyst for being commercially used for synthesis PAO base oil is mainly that homogeneous Lewis acid catalyst, ziegler-nata are urged
Agent, metallocene catalyst.Since Lewis acid catalyst synthesis yield is higher, product narrowly distributing, viscosity temperature characteristic is good and price is low
Honest and clean, that industrially applies is more extensive.
It is disclosed in patent US4219691 a kind of using AlCl3And C3Above alcohols complex catalysis alkene synthesis is different viscous
The method of PAO is spent, the conversion ratio of alkene can reach 90% or more.Patent US7547811 discloses one kind with AlCl3Catalyst,
Deionized water is the method that initiator prepares high viscosity PAO.Although above-mentioned reaction all has higher conversion ratio, there are still anti-
It answers product and catalyst that can not separate, remains in product compared with multi-catalyst, need repeatedly to wash and etc..Especially using
AlCl3When catalyst synthesizes medium viscosity PAO base oil, reaction kettle bottom remaining can largely be wrapped in the AlCl of oily phase at the end of reaction3
Solid acid sludge easily causes to corrode if it is not removed thoroughly to equipment, and influences oil quality.
Traditional separation AlCl3The method of catalyst is after lye stirring is added, and sedimentation separation obtains the production of PAO base oil
Product.However, easily making oily mutually emulsification after lye is added, separating effect is reduced；And the aluminium hydroxide floccule generated after alkali cleaning easily will
Oil remains in oily phase in being wrapped in, and reduces separating effect, or enter in water phase and take away a part of product, reduces yield.Together
When, due to precipitating in obtained alkali-wash waste water containing a large amount of floccules, thus it is difficult to cycling and reutilization.Therefore, it seeks a kind of suitable
Close the method for being used to prepare the separation aluminum trichloride catalyst simple and easy, convenient for industrial operation of medium viscosity PAO base oil, energy
It is enough greatly to improve separative efficiency, production cost is reduced, oil quality is improved；And by waste water reuse, discharging of waste liquid is reduced,
To reach the requirement of green chemical industry.
Patent USP6002060 is disclosed to load alchlor as catalyst, and organo-aluminum compound is co-catalyst, is made
The method of alpha-olefin generation polymerization reaction.Patent CN1156338 is disclosed using gas phase solid support method in N2It is lower will be fresh
AlCl3It brings into on mesoporous and macropore double-pore structure alumina support, synthesizes AlCl3Solid-carried catalyst is low for isobutene
Spend polymerization reaction.Patent CN103666552 discloses a kind of alkali modification AlCl3/Al2O3Solid-carried catalyst is catalyzed alpha-olefin and closes
At the method for medium viscosity PAO base oil.The above method efficiently solves AlCl3The problem of being not readily separated after catalyst reaction,
And the catalyst after separating is recycling.However, these AlCl3The PAO Basic oil Viscosity that solid-carried catalyst is prepared is lower, and
Catalyst regeneration is complicated for operation, is not suitable for industrialized production also at present.
Chinese patent CN1048174A uses boiling range to recycle alchlor complex catalysis for 190~310 DEG C of alkane washing
Agent, and part fresh aluminum chloride is added, additional amount is 45%~60% of alchlor weight contained in complex catalyst,
Then reuse is carried out, but the patent does not suggest that the processing method of outlet dead catalyst.
Certain factory handles waste oil residue containing alchlor using the method that lye neutralizes, but this method can generate a large amount of float
Slag, oil and COD removal effect are very poor.
Summary of the invention
Processing and oil recovery method the main purpose of the present invention is to provide a kind of waste oil residue containing alchlor, to solve
Existing alkali neutralization technique is also easy to produce a large amount of solid granular grease insoluble in oil or water, and gives up caused by the present invention
Liquid can be used for sewage treatment flocculating agent or be used as neutralizing with acid, to reduce discharging of waste liquid, meet the ring of green chemical industry
Guaranteed request.
To achieve the goals above, the processing the present invention provides a kind of waste oil residue containing alchlor and oil recovery method,
This method are as follows:
Under agitation, acidification is carried out to waste oil residue containing alchlor with acid solution, is then allowed to stand sedimentation point
Layer, upper oil phase directly recycle after being washed to neutrality；
Wherein, the pH value of the acid solution is 0~3, the volume ratio of the acid solution and the waste oil residue containing alchlor
For 0.5:1~3:1.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the standing sedimentation layering
Lower layer's acidity water phase afterwards preferably uses lye neutralization precipitation to handle or comprehensively utilized as neutralizing with acid or flocculant.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the upper oil phase washing
The washing water of generation is for preparing the acid solution.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the acid solution is preferred
It is sulfuric acid, nitric acid or hydrochloric acid solution for inorganic acid solution or the useless inorganic acid solution of saliferous, the inorganic acid solution.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein waste oil residue containing alchlor
Preferably using alchlor as the waste oil residue containing alchlor that catalyst carries out olefin polymerization and generates, or for trichlorine
Change the waste oil residue containing alchlor that aluminium is catalyst alkylation reaction and generates.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the temperature of the acidification
Preferably 10~100 DEG C of degree, the time of acidification is preferably 10~120min.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the standing sedimentation layering
Time is preferably 0.5~5h.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the stirring condition is preferred
It is 10~1000 revs/min of mixing speed.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the upper oil phase is through water
It washes in step, washing temperature is preferably 10~100 DEG C, and washing water consumption and upper oil phase volume ratio are preferably 0.5:1~3:1.
The processing of the waste oil residue of the present invention containing alchlor and oil recovery method, wherein the acidification is acid
Journey is washed, the acid cleaning process preferably carries out 1~3 time, and the upper oil phase preferably continues to wash 1~2 time again with acid solution
It is recycled after being washed to neutrality.
Compared with prior art, the technology of the present invention solves the deficiencies in the prior art, has the advantages that following significant:
1. the present invention handles oil-containing alchlor waste oil residue using Acidizing Technology, during alchlor is soluble in the aqueous phase, more will not
Solid granular oil clot is generated, can be avoided the solid granular oil clot in acid alchlor waste oil residue alkali neutralization technical process
It generates, and then avoids grease and be difficult to the phenomenon that separating generation.
2. the present invention handles oil-containing alchlor waste oil residue using Acidizing Technology, due to the demulsification of acid condition, energy
The oil content in water phase is enough significantly reduced, improves deoiling effect, and then can be realized the comprehensive utilization of acid waste water, is controlled with useless
It is useless.
3. the present invention can be improved product yield using the oil in waste oil residue containing alchlor as Product recycling, obtain aobvious
Write economic benefit.
4. present invention process is simple, easy to operate, it is easy to be grasped by person skilled in art.
Specific embodiment
Elaborate below to the embodiment of the present invention: the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, gives detailed embodiment and process, but protection scope of the present invention is not limited to following embodiments, following implementation
Test method without specific conditions in example, usually according to normal condition.
The present invention provides a kind of Slag treatment of waste oil containing alchlor and oil recovery method, main processes include with
Lower step:
(1) first under agitation, acidification, control are carried out to oil-containing alchlor waste oil residue using inorganic acid solution
The pH of inorganic acid solution appropriate is made, pH is 0~3, preferably 1~2.It can suitably heat simultaneously, reduce oil viscosity, promote acid
Property water with oil be sufficiently mixed, accelerate alchlor be dissolved in water phase, such as controlled at 10~100 DEG C, preferably 30~
70℃。
The dosage of the inorganic acid solution is that the volume ratio of inorganic acid solution and oil-containing alchlor waste oil residue is 0.5:1
~3:1, preferably 1:1~2:1.
Speed of agitator when the described acidification is 10~1000 revs/min, preferably 50~500 revs/min.
(2) standing sedimentation, water-oil separating
When the alchlor in waste oil residue after completely dissolution, stop stirring, standing sedimentation, water-oil separating.
Upper oil phase directly recycles after being washed to neutrality, or water again after further being washed 1~2 time using acid solution
It is washed till neutral recycling, improves the removal effect of alchlor in oil, while acid solution is applied, reduces supplies consumption and discharge
Amount, lower layer's acidity water phase are used alkali neutralization precipitation process or are comprehensively utilized as neutralizing with acid or flocculant.
Usually acidity water phase neutralization is NaOH solution or clarification lime aqueous solution with alkali, it is contemplated that after acidification, acid
Property waste water oil content it is extremely low, and contain a large amount of aluminium ion, therefore, can be used as neutralization with acid, or as flocculant use
It is comprehensively utilized in the processing of waste water, the treatment of wastes with processes of wastes against one another, reduces processing cost.
Certainly, it is the generation for further decreasing waste water, can will be used for upper oil phase washing water and apply step by step, and be subsequently used for matching
Inorganic acid solution is set, the generation of waste water is further decreased.It is washing water and upper layer therefore, it is necessary to the dosage of suitable control washing water
Acid-soluble oil phase volume ratio is 0.5:1~3:1, preferably 1:1~2:1.
Technical solution of the present invention is described in detail below by specific embodiment.
Comparative example 1
Weighing the 20g dregs of fat with 500ml beaker, (acquisition of dregs of fat sample is raw material, alchlor for catalyst certainly using alpha-olefin
Synthetic lubricant fluid factory, following embodiment are identical), 10% sodium hydroxide solution of 300ml is measured with graduated cylinder, and 500ml beaker is added
In, it is poured into after being heated to 60 DEG C in another 500ml beaker for being equipped with and weighing the 10g dregs of fat, is then placed in 60 DEG C of constant temperature oil baths, stirs
After mixing 2h, stratification 2h is divided into upper layer brownish oil phase and lower layer's water phase, while beaker bottom has 2 lumpy precipitates.It will burn
The waste residue precipitating in bottom of a cup portion, which is taken out, to be put into 100ml beaker, is stirred under the conditions of 40 DEG C after 10ml hydrochloric acid (pH=1) is added, block
The dissolution rapidly of shape precipitating, stops stirring, solution is transferred to after standing 0.5h in 50ml graduated cylinder, and discovery solution is divided into upper oil phase
Water phase is clarified with lower layer, this is because under alkaline condition, alchlor and alkaline reaction generate aluminium hydroxide floccule, and will
Oil is wrapped in wherein it is difficult to further dissolve, to generate blocky oil.
It can be seen that the effect that the waste oil residue containing alchlor is directly handled using lye is poor, alchlor solution rate
Relatively slow, disengaging time is long.
Embodiment 1
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 1, and the volume ratio of sulfuric acid solution and waste oil residue is 2:1, and mixing speed 300rpm, acidification temperature is 30
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 60min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 96ppm in lower layer's acidity water phase.
Embodiment 2
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 1, and the volume ratio of sulfuric acid solution and waste oil residue is 3:1, and mixing speed 300rpm, acidification temperature is 50
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 90ppm in lower layer's acidity water phase.
Embodiment 3
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 2, and the volume ratio of sulfuric acid solution and waste oil residue is 3:1, and mixing speed 400rpm, acidification temperature is 30
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 95ppm in lower layer's acidity water phase.
Embodiment 4
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 2, and the volume ratio of sulfuric acid solution and waste oil residue is 2:1, and mixing speed 300rpm, acidification temperature is 50
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 132ppm in lower layer's acidity water phase.
Embodiment 5
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 3, and the volume ratio of sulfuric acid solution and waste oil residue is 3:1, and mixing speed 400rpm, acidification temperature is 30
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 180min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 123ppm in lower layer's acidity water phase.
Embodiment 6
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 3, and the volume ratio of sulfuric acid solution and waste oil residue is 2:1, and mixing speed 200rpm, acidification temperature is 50
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 121ppm in lower layer's acidity water phase.
Embodiment 7
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 3, and the volume ratio of sulfuric acid solution and waste oil residue is 2:1, and mixing speed 300rpm, acidification temperature is 70
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 240min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, no blocky oil, upper layer is brown oil phase, and oil content is 83ppm in lower layer's acidity water phase.
Comparative example 2
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 4, and the volume ratio of sulfuric acid solution and waste oil residue is 3:1, and mixing speed 300rpm, acidification temperature is 50
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 60min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, there is a small amount of tiny acid sludge undissolved, upper layer is brown oil phase, and oil content is in lower layer's acidity water phase
186ppm。
Comparative example 3
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 5, and the volume ratio of sulfuric acid solution and waste oil residue is 2:1, and mixing speed 400rpm, acidification temperature is 30
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, there is a small amount of blocky acid sludge undissolved, upper layer is brown oil phase, and oil content is in lower layer's acidity water phase
197ppm。
Comparative example 4
Under agitation, use sulfuric acid solution to the dregs of fat of the dead catalyst containing alchlor (acquisition of dregs of fat sample from
Alpha-olefin is raw material, alchlor is catalyst synthetic lubricant fluid factory, and following embodiment is identical) carry out acidification, sulfuric acid
The pH of solution is 5, and the volume ratio of sulfuric acid solution and waste oil residue is 3:1, and mixing speed 500rpm, acidification temperature is 50
DEG C, after acidification 0.5h, stop stirring, standing sedimentation, the sedimentation separation time is 120min, and water-oil separating obtains upper oil phase
With lower layer's acidity water phase, have undissolved compared with lumpy acid sludge, upper layer is brown oil phase, and oil content is in lower layer's acidity water phase
164ppm。
The treatment conditions and removal effect of embodiment 1-7 and comparative example 2-4 are specifically shown in Table 1.
1 pickling processes condition of table and removal effect
Used it can be seen from the data in table 1 pH for the acid solution of 1-3 to the waste oil residue containing alchlor at
Reason, treatment process has generation without bulk, and the alchlor in the dregs of fat separates thoroughly with oil, while the oil content in lower layer's water phase
It is lower, illustrate that water-oil separating is thorough, significant effect is better than the effect using base extraction.If the pH of acid solution if more than 3,
Acid sludge dissolution is not thorough, and has residual acid sludge and exists, and oil content is also higher in acid water phase at this time.
Embodiment 8~12:
It is mixed with the ratio of 2:1 as acidification agent, hydrochloric acid solution and dregs of fat volume ratio using the hydrochloric acid solution of pH=1
It closes, stirs 0.5h under the conditions of 40 DEG C, be then allowed to stand sedimentation layering, obtain upper oil phase and lower layer's water phase, bottom is without precipitating.
After above-mentioned upper oil phase is separated, carry out washing process with desalted water, separated after stirring 0.5h, after standing oil mutually and
Water phase, until oil phase pH is neutrality.Then aluminium content in oily phase is measured, concrete outcome is shown in Table 2.
Effect after 2 upper oil phase washing conditions of table and washing
From table 2 it can be seen that after being handled using method of the present invention the waste oil residue containing alchlor, upper layer
Contain Trace Aluminum in oily phase.
Embodiment 13:
It is mixed with the ratio of 2:1 as acidification medicament, hydrochloric acid solution and dregs of fat volume ratio using the hydrochloric acid solution of pH=1
It closes, stirs 0.5h under the conditions of 40 DEG C, be then allowed to stand sedimentation layering, obtain upper oil phase and lower layer's water phase, bottom is without precipitating.
After above-mentioned upper oil phase is separated, continue the hydrochloric acid solution using pH=1 as acidification medicament, identical
Under the conditions of, continue mutually to carry out pickling processes to oily, and be repeated 2 times, water is mutually then carried out to the oil finally obtained using desalted water
Processing is washed, 0.5h is stirred, oil phase and water phase is separated after standing, wash repeatedly oily phase, until oil phase pH is neutral.Then measurement oil
Aluminium content≤1ppm in phase.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art
It all should belong to the protection scope of the claims in the present invention.
Claims (10)
1. a kind of processing of waste oil residue containing alchlor and oil recovery method, which is characterized in that this method are as follows:
Under agitation, acidification is carried out to waste oil residue containing alchlor with acid solution, is then allowed to stand sedimentation layering, on
Layer oil mutually directly recycles after being washed to neutrality；
Wherein, the pH value of the acid solution is 0~3, and the volume ratio of the acid solution and the waste oil residue containing alchlor is
0.5:1~3:1.
2. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that described quiet
Lower layer's acidity water phase after setting sedimentation layering uses lye neutralization precipitation to handle or uses acid or flocculant comprehensive utilization as neutralizing.
3. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that on described
The layer oil washing water that mutually washing generates is for preparing the acid solution.
4. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that the acid
Property solution be that inorganic acid solution or saliferous give up inorganic acid solution, the inorganic acid solution is sulfuric acid, nitric acid or hydrochloric acid solution.
5. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that contain trichlorine
Changing aluminium waste oil residue is the waste oil residue containing alchlor for carrying out olefin polymerization by catalyst of alchlor and generating, Huo Zhewei
Using alchlor as the waste oil residue containing alchlor that catalyst alkylation reacts and generates.
6. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that the acid
The temperature for changing processing is 10~100 DEG C, and the time of acidification is 10~120min.
7. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that described quiet
Setting sedimentation separation time is 0.5~5h.
8. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that described to stir
Mixing condition is 10~1000 revs/min of mixing speed.
9. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that on described
For layer oil mutually through in water-washing step, washing temperature is 10~100 DEG C, washing water consumption and upper oil phase volume ratio are 0.5:1~3:
1。
10. the processing of the waste oil residue according to claim 1 containing alchlor and oil recovery method, which is characterized in that described
Acidification is acid cleaning process, and the acid cleaning process carries out 1~3 time, and the upper oil phase continues to wash 1~2 with acid solution
It is secondary be washed to neutrality again after recycle.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113372948A (en) * | 2021-06-09 | 2021-09-10 | 茂名海和石油化工有限公司 | Acid-residue-free and wastewater-free base oil decoloring process |
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