CN102492458A - Additive for removing organochlorine from crude oil and removal technology thereof - Google Patents
Additive for removing organochlorine from crude oil and removal technology thereof Download PDFInfo
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- CN102492458A CN102492458A CN2011103736348A CN201110373634A CN102492458A CN 102492458 A CN102492458 A CN 102492458A CN 2011103736348 A CN2011103736348 A CN 2011103736348A CN 201110373634 A CN201110373634 A CN 201110373634A CN 102492458 A CN102492458 A CN 102492458A
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- crude oil
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Abstract
The invention provides an additive for removing organochlorine from crude oil. The additive is characterized by being prepared through compounding of 2%-10% of a phase-transfer catalyst, 10%-30% of alkali and 60-88% of a solvent by mass. During electrical desalting and dewatering, the additive of the invention is added together with a demulsifier, thus being able to effectively remove an organic chloride from crude oil, reduce the content of chloride ions in condensed water at the top of a distillation tower, alleviate corrosion of tower top distillate pipelines and cooling-heat transfer equipment, as well as having no side effect on subsequent processes.
Description
Technical field
The present invention relates to a kind of oil refining process additive, especially remove the addictive preparation method of organochlorine compound in the crude oil and the application of removing process in oil refining apparatus about a kind of.
Background technology
(1) source of organochlorine compound and form in the crude oil
In recent years,, make the Oil extraction degree of depth increase,, injected a large amount of chloride oil recovery auxiliary agents during oil recovery, cause the content of organic chloride in the crude oil to increase in order to increase petroleum production owing to domestic demand to oil increases gradually.According to our investigation; The chloride chemical assistant that injects during oil recovery has more than 20 kinds; Common SP169 emulsion splitter, SAE emulsion splitter, D80 emulsion splitter, SJN-1 viscosity-depression agent, JN-510 viscosity-depression agent arranged, gather quaternary amine clay stabilizer, NW-l clay stabilizer, AR8802 unblocking agent, JS-2 unblocking agent, TF-9101 unblocking agent, JS-1 paraffin remover, GS-1 paraffin remover, FSH-9101 sand-fixation agent, FS-1 sand prevention agent etc.; The content of organic chloride of these oil recovery auxiliary agents reaches tens to hundreds of thousands of ppm, makes content of organic chloride in the crude oil at 5-30ppm.
Through the evaluation to organochlorine type in the crude oil, the organic chloride in the crude oil is a chloroparaffin, chlorinated aromatic hydrocarbons, ring-type hydrochloric ether, polymerization hydrochloric ether etc.The organic chloride that is present in the crude oil is generally a chloropropane, ethylene dichloride, trichloromethane, methylene dichloride, tetracol phenixin and epoxy chloropropane etc.
(2) distribution of organochlorine compound in the crude oil
Chloride crude oil is distilled, cut each narrow fraction, the content of organic chloride of each narrow fraction is analyzed, the chlorine in each narrow fraction below 350 ℃ mainly is organochlorine in the crude oil, and inorganic chlorine seldom.Wherein each the narrow fraction cl content below 150 ℃ is higher, and cl content is greater than 20 μ gg
-1, the last running cl content is the highest more than 350 ℃, and organochlorine, content of inorganic chlorine are all higher.
(3) harm of chlorine
1. to the harm of ordinary decompression column
If do not contain organochlorine in the crude oil; When cl content in the crude oil after the electric desalting is reduced to 3ppm when following; Be reflected to chloride ion content in the overhead condensation water generally below 30-50 ppm, annotate inhibiter through cat head and can suppress of the corrosion of cat head cl ions equipment and pipeline.If contain organochlorine in the crude oil; Be difficult to remove through after the electric desalting; Crude oil is heated to 300 ℃ through process furnace; Organic chloride decomposes generation HCl, is reflected to make chloride ion content reach the ppm at 80-100 in the overhead condensation water, can not prevent corrosion on Equipment even strengthen the inhibiter IR.
2. to the harm of reforming plant catalyst
What reformer adopted is the low platinum-rhenium catalyst of perchloro-type, in the operational process of reformer, in order to bring into play its activity of such catalysts, selectivity and stability well; To the cl content requirement＜1ppb in the raw oil petroleum naphtha, if the cl content in the reformer feed is too high, after getting into pre-hydrotreating reaction; Chlorine in the molecule is replaced by hydrogen, and C1-then is combined into HCI with H, has destroyed the water chloride balance of catalyzer; Make and lose activity poisoning of catalyst.
3. to the harm of FCC catalyzer
Chlorine has the not lone-pair electron of Cheng Jian, and very big electron affinity is arranged, easy and metals ion reaction.In addition, cl ions also has very high transport property, often with the technology migrated downstream, full the poisoning of catalyst of formation bed property often.
4. to the harm of coker
Organochlorine partly is present in the heavy oil component residual oil in the crude oil, is heated to more than 500 ℃ through process furnace as the residual oil of coking raw material, and organic chloride decomposes and generates HCl, gets into the coking fractional distillation column top, causes the corrosion of fractionation cat head.
Summary of the invention
Goal of the invention: the present invention provides a kind of additive and removing process thereof that removes organochlorine in the crude oil, its objective is the problem that solves the harm of chlorine in the crude oil.
Technical scheme: the present invention realizes through following technical scheme:
A kind of additive that removes organochlorine in the crude oil; It is characterized in that: this additive is composite and make in following ratio by phase-transfer catalyst, alkali and solvent: the mass percent of phase-transfer catalyst is 2%-10%; The mass percent of alkali is 10%-30%, and the mass percent of solvent is 60-88%.
Phase-transfer catalyst is quaternary ammonium hydroxide or polyoxyethylene glycol; Alkali is sodium hydroxide, sodium ethylate or thanomin; Solvent is a kind of in following three kinds of situation: water and alcoholic acid mixture, water and methanol mixture, water, ethanol, methyl alcohol three's mixture.
Quaternary amine alkali is N, N-dimethyl--octadecyl-benzylic hydrogens ammonium oxide, triethyl benzylic hydrogens ammonium oxide, TBAH or three hexyl methyl volatile caustic; Polyoxyethylene glycol is that molecular weight is 200,400,600 polyoxyethylene glycol.
Preferred sodium hydroxide of alkali or sodium ethylate.
Solvent preferably water and alcoholic acid mixture.
The mass percent of phase-transfer catalyst is 3%-5%; The mass percent of alkali is 15%-25%; The mass percent of solvent is 70-82%.
The mass percent of water is 40%-60%, and the alcoholic acid mass percent is 20%-40%, and this mass percent is water and ethanol accounts for the whole massfraction that removes the total mass of the additive of organochlorine in the crude oil.
The mass percent of water is preferably 45%-55%, and the alcoholic acid mass percent is preferably 30%-35%.
The additive that removes organochlorine in the crude oil described in crude oil oil sample, water and the claim 1 is placed in the reaction kettle by following described mixed stirs oil: water (mass ratio)=7:3-9:1, additive is 20 μ g.g with the ratio of oil
-1-40 μ g.g
-1;Temperature of reaction is 90-120 ℃, and the reaction times is 45min, standing demix, and the organic chloride in the crude oil is converted into butter, and butter gets into water and removes.
The content that removes organochlorine in the add-on based on crude of additive of organochlorine in the crude oil confirms that the mass ratio of the content of organochlorine is 4:1 in its add-on and the crude oil.
Advantage and effect: the present invention provides a kind of additive that removes organochlorine in the crude oil; It is characterized in that: this additive is composite and make in following ratio by phase-transfer catalyst, alkali and solvent: the mass percent of phase-transfer catalyst is 2%-10%; The mass percent of alkali is 10%-30%, and the mass percent of solvent is 60-88%.
The present invention adds with emulsion splitter in the electrodesalting and electrodehydrating process; Can effectively remove the organic chloride in the crude oil; Reduce chloride ion content in the distillation cat head water of condensation, alleviate the corrosion that cat head distillates pipeline and cold exchange device, the subsequent technique process is free from side effects.
Description of drawings:
Fig. 1 is a phase transfer reaction schematic diagram of the present invention;
Fig. 2 is a crude oil dechlorination filling process flow sheet of the present invention.
Embodiment:Below in conjunction with accompanying drawing the present invention is done further explanation:
Below in conjunction with embodiment the present invention is elaborated, but protection scope of the present invention is not limited only to following embodiment.
The present invention provides a kind of additive that removes organochlorine in the crude oil; This additive is composite and make in following ratio by phase-transfer catalyst, alkali and solvent: the mass percent of phase-transfer catalyst is 2%-10%; The mass percent of alkali is 10%-30%, and the mass percent of solvent is 60-88%.
Phase-transfer catalyst is quaternary ammonium hydroxide or polyoxyethylene glycol; Alkali is sodium hydroxide, sodium ethylate or thanomin; Solvent is a kind of in following three kinds of situation: water and alcoholic acid mixture, water and methanol mixture, water, ethanol, methyl alcohol three's mixture.
Quaternary amine alkali is N, N-dimethyl--octadecyl-benzylic hydrogens ammonium oxide, triethyl benzylic hydrogens ammonium oxide, TBAH or three hexyl methyl volatile caustic; Polyoxyethylene glycol is that molecular weight is 200,400,600 polyoxyethylene glycol.
Preferred sodium hydroxide of alkali or sodium ethylate.
Solvent preferably water and alcoholic acid mixture.
The mass percent of phase-transfer catalyst is 3%-5%; The mass percent of alkali is 15%-25%; The mass percent of solvent is 70-82%.
The mass percent of water is 40%-60%, and the mass percent of ethanol or methyl alcohol is 20%-40%, and this mass percent is water and ethanol accounts for the whole massfraction that removes the total mass of the additive of organochlorine in the crude oil.
The mass percent of water is preferably 45%-55%, and the alcoholic acid mass percent is preferably 30%-35%.
The additive that removes organochlorine in the crude oil described in crude oil oil sample, water and the claim 1 is placed in the reaction kettle by following described mixed stirs oil: water (mass ratio)=7:3-9:1, additive is 20 μ g.g with the ratio of oil
-1-40 μ g.g
-1;Temperature of reaction is 90-120 ℃, and the reaction times is 45min, standing demix, and the organic chloride in the crude oil is converted into butter, and butter gets into water and removes.
The content that removes organochlorine in the add-on based on crude of additive of organochlorine in the crude oil confirms that the mass ratio of the content of organochlorine is 4:1 in its add-on and the crude oil.
The additive that removes organochlorine in the crude oil of the present invention is composite by a certain percentage and make by phase-transfer catalyst, alkali and solvent etc., and embodiment is following:
Embodiment 1, press the N of mass ratio 3%, N-dimethyl--octadecyl-benzylic hydrogens ammonium oxide, 20% sodium hydroxide, 42% water and 35% ethanol mixed the crude oil dechlorinating agent.
Embodiment 2, the triethyl benzylic hydrogens ammonium oxide of pressing mass ratio 4%, 15% sodium ethylate, the mixed crude oil dechlorinating agent that gets of 46% water and 35% ethanol.
Embodiment 3, the three hexyl methyl volatile caustic of pressing mass ratio 5%, 25% thanomin, 40% water and 30% ethanol mixed the crude oil dechlorinating agent.
Embodiment 4, the TBAH of pressing mass ratio 7%, 20% sodium hydroxide, 40% water and 33% ethanol mixed the crude oil dechlorinating agent.
Embodiment 5, the polyoxyethylene glycol (molecular weight 400) of pressing mass ratio 4%, 21% sodium hydroxide, 40% water and 35% ethanol mixed the crude oil dechlorinating agent.
Embodiment 6: press polyoxyethylene glycol (molecular weight 200), 30% sodium ethylate, 48% water and 20% the ethanol of mass ratio 2% mixed the crude oil dechlorinating agent.
Embodiment 7: press three hexyl methyl volatile caustic, 10% sodium ethylate, 60% water and 20% the ethanol of mass ratio 10% mixed the crude oil dechlorinating agent.
Embodiment 8: press polyoxyethylene glycol (molecular weight 600), 10% sodium ethylate, 40% water and 40% the ethanol of mass ratio 10% mixed the crude oil dechlorinating agent.
Embodiment 9, the TBAH of pressing mass ratio 8%, 12% sodium hydroxide, 45% water and 35% ethanol mixed the crude oil dechlorinating agent.
Embodiment 10, the three hexyl methyl volatile caustic of pressing mass ratio 5%, 10% thanomin, 55% water and 30% ethanol mixed the crude oil dechlorinating agent.
Embodiment 11, press the N of mass ratio 8%, N-dimethyl--octadecyl-benzylic hydrogens ammonium oxide, 10% sodium hydroxide, 45% water and 37% ethanol mixed the crude oil dechlorinating agent.
Embodiment 12, the triethyl benzylic hydrogens ammonium oxide of pressing mass ratio 10%, 30% sodium ethylate, the mixed crude oil dechlorinating agent that gets of 40% water and 20% ethanol.
Embodiment 13, the three hexyl methyl volatile caustic of pressing mass ratio 2%, 10% thanomin, 58% water and 30% ethanol mixed the crude oil dechlorinating agent.
Ethanol in the foregoing description can use the methyl alcohol of equivalent to substitute.
When solvent was water, ethanol, methyl alcohol three's mixture, its quality than scope was: water 40-60%, ethanol 20-40%, methyl alcohol 20-40%.For example: water 50%, ethanol 25%, methyl alcohol 25%; Or water 40%, ethanol 25%, methyl alcohol 35% etc.
As shown in Figure 1, action principle of the present invention is: the organic chloroparaffin in the crude oil can generate Fatty Alcohol(C12-C14 and C12-C18) and sodium-chlor with sodium hydroxide, sodium ethylate or thanomin reaction, and Fatty Alcohol(C12-C14 and C12-C18) is dissolved in oil to be stayed in the crude oil, is removed and sodium-chlor is water-soluble.But being reflected at, this does not have catalyzer to exist down; Speed of response is very slow, if add quaternary ammonium hydroxide or polyoxyethylene glycol in the phase-transfer catalyst, meeting is fast reaction speed greatly; Under the crude oil electric desalting dewatering temperature and the residence time, can make organic chloride be converted into butter.
The phase transfer reaction principle is following:
(1) positive ion exchange: Q
+OH
-+ R
+Cl
-=R
+OH
-+ Q
+Cl
-(oil phase)
(2) phase transition: Q
+Cl
-(oil phase)=Q
+Cl
-(water)
(3) negative ion exchange: Q
+Cl
-+ Na
+OH
-=NaCl+Q
+OH
-(water)
(4) phase transition: Q
+OH
-(water)=Q
+OH
-(oil phase)
Quaternary amine alkali (Q among the present invention
+OH
-) or the constantly circulation between oil phase and water of phase-transfer catalyst such as polyoxyethylene glycol, make the chlorine in the oil phase constantly be transferred to aqueous phase.
The crude oil dechlorinating agent that makes as stated above carries out effect assessment through the temperature and the residence time of laboratory simulation electrodesalting and electrodehydrating, and evaluation method is following:
With reference to the temperature and the residence time of electrodesalting and electrodehydrating, will test oil sample and mix by mass ratio with water, add additive of the present invention again; Oil: water (mass ratio)=7:3-9:1, additive of the present invention is 20 μ g.g with the ratio of oil
-1-40 μ g.g
-1;The three stirs together, and temperature of reaction is 90-120 ℃, and the reaction times is 45min.After dividing water, obtain taking off back crude oil.Measure respectively and take off preceding crude oil and the organochlorine and the content of inorganic chlorine that take off in the crude oil of back, experimental result such as table 1.
Several kinds of crude oil organochlorines of table 1 remove experimental data
Visible by data in the table, this crude oil dechlorinating agent is adding dosage 20-40 μ g.g
-1, can remove the organochlorine of 40-98% in the crude oil, dechlorination effect is fairly obvious.
The industrial application situation:
1. the additive of the present invention's development has carried out industrial performance test at refinery, and Fig. 2 is seen in its dosing method and technical process.
2. the industrial performance test data on certain crude unit as shown in table 2 in 5,000,000 tons of years of refinery.
The commerical test data of table 2 crude oil organochlorine transfer additive
Visible by table 3, the MV of chloride ion content when not annotating additive of the present invention is 416.87 mg/L in the water of condensation of normal top, and 10 μ g.g annotate
-1Additive of the present invention after its content be reduced to 126.28 mg/L, chloride ion content has reduced 66.68% in the water of condensation of normal top, removal effect is very obvious; At the beginning of when not annotating additive of the present invention in the water of condensation of top chloride ion content be 30.86 mg/L, 10 μ g.g annotate
-1Additive of the present invention after chloride ion content be reduced to 25.02 mg/L since this crude oil just in the water of condensation of top the chloride ion content radix smaller, so removal effect is not clearly, chloride ion content only reduces 18.92% in the water of condensation of first top; Take off that the content of cl ions before and after filling additive of the present invention is respectively 89.82 mg/L and 108.99 mg/L in the draining of back; Average increase by 21.34%; On average to increase numerical value be not very high although take off in the draining of back cl ions, because it is very big to take off back water displacement, near 30 tons/hour; Therefore the actual amount that removes organochlorine is still bigger, and the actual removal effect of organochlorine is apparent in view.
3. 2,500,000 tons of/year industry experiment datas of certain refinery are as shown in table 3.
Oily cl content removal effect of table 3 and sewage, product cl content change list
Visible by table 3; Butter in the crude oil more than 90% can be removed through the electric desalting process; Chloride ion content in the Electric Desalting Wastewater is 450.85mg/L before adding additive of the present invention, add additive of the present invention after, the chloride ion content in the Electric Desalting Wastewater increases to about 850 mg/L; Explain that thereby a large amount of organic chlorides are converted to butter and are removed, the organochlorine decreasing ratio can reach 85% in the crude oil.Just the chloride ion content in top oil, normal top oil, normal line oil, normal two wires oil and the atmosphere 3rd side cut oil all below 3mg/L, can suppress corrosion through adding inhibiter.
To sum up experiment and applied analysis the invention has the beneficial effects as follows the additive that in electrodesalting and electrodehydrating, injects dechlorination of the present invention, and organochlorine is converted into inorganic chlorine, effectively it removed.Reduce chloride ion content in the distillation cat head water of condensation, alleviate the corrosion that cat head distillates pipeline and cold exchange device.
Claims (10)
1. additive that removes organochlorine in the crude oil; It is characterized in that: this additive is composite and make in following ratio by phase-transfer catalyst, alkali and solvent: the mass percent of phase-transfer catalyst is 2%-10%; The mass percent of alkali is 10%-30%, and the mass percent of solvent is 60-88%.
2. the additive that removes organochlorine in the crude oil according to claim 1 is characterized in that: phase-transfer catalyst is quaternary ammonium hydroxide or polyoxyethylene glycol; Alkali is sodium hydroxide, sodium ethylate or thanomin; Solvent is a kind of in following three kinds of situation: water and alcoholic acid mixture, water and methanol mixture, water, ethanol, methyl alcohol three's mixture.
3. the additive that removes organochlorine in the crude oil according to claim 2 is characterized in that: quaternary amine alkali is N, N-dimethyl--octadecyl-benzylic hydrogens ammonium oxide, triethyl benzylic hydrogens ammonium oxide, TBAH or three hexyl methyl volatile caustic; Polyoxyethylene glycol is that molecular weight is 200,400,600 polyoxyethylene glycol.
4. the additive that removes organochlorine in the crude oil according to claim 3 is characterized in that: preferred sodium hydroxide of alkali or sodium ethylate.
5. the additive that removes organochlorine in the crude oil according to claim 2 is characterized in that: solvent preferably water and alcoholic acid mixture.
6. the additive that removes organochlorine in the crude oil according to claim 1 is characterized in that: the mass percent of phase-transfer catalyst is 3%-5%; The mass percent of alkali is 15%-25%; The mass percent of solvent is 70-82%.
7. the additive that removes organochlorine in the crude oil according to claim 5; It is characterized in that: the mass percent of water is 40%-60%; The alcoholic acid mass percent is 20%-40%, and this mass percent is water and ethanol accounts for the whole massfraction that removes the total mass of the additive of organochlorine in the crude oil.
8. the additive that removes organochlorine in the crude oil according to claim 7 is characterized in that: the mass percent of water is preferably 45%-55%, and the alcoholic acid mass percent is preferably 30%-35%.
9. the removing process that removes the additive of organochlorine in the crude oil as claimed in claim 1; It is characterized in that: the additive that removes organochlorine in the crude oil described in crude oil oil sample, water and the claim 1 is placed in the reaction kettle by following described mixed stirs; Oil: water (mass ratio)=7:3-9:1, additive is 20 μ g.g with the ratio of oil
-1-40 μ g.g
-1;Temperature of reaction is 90-120 ℃, and the reaction times is 45min, standing demix, and the organic chloride in the crude oil is converted into butter, and butter gets into water and removes.
10. the removing process that removes the additive of organochlorine in the crude oil according to claim 9; It is characterized in that: the content that removes organochlorine in the add-on based on crude of additive of organochlorine in the crude oil confirms that the mass ratio of the content of organochlorine is 4:1 in its add-on and the crude oil.
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|---|---|---|---|
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103736348A CN102492458A (en) | 2011-11-22 | 2011-11-22 | Additive for removing organochlorine from crude oil and removal technology thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484155A (en) * | 2013-09-23 | 2014-01-01 | 中国林业科学研究院林产化学工业研究所 | Method for reducing organic chloride content of hydrocarbon fuel oil |
| CN103571521A (en) * | 2012-07-18 | 2014-02-12 | 中国石油化工股份有限公司 | Method for removing chlorine-containing organic compound from oil product |
| CN105368580A (en) * | 2014-08-25 | 2016-03-02 | 中石化洛阳工程有限公司 | Organic chloride removing method for waste cooking oil |
| CN107459182A (en) * | 2017-07-18 | 2017-12-12 | 浙江工商大学 | A kind of sodium alkoxide dechlorination method of high chlorine distillation residual liquid |
| CN109181759A (en) * | 2018-10-11 | 2019-01-11 | 宁波中循环保科技有限公司 | A kind of method of chlorine-containing organic compounds in removing waste oil |
| CN109337710A (en) * | 2018-09-28 | 2019-02-15 | 蒋旭辉 | A kind of liquid antichlor |
| CN109439362A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of preparation method of the chloride shift agent for electric desalting apparatus |
| CN110408422A (en) * | 2019-08-08 | 2019-11-05 | 磁悬浮润滑油(苏州)有限公司 | A kind of method of organochlorine in removing liquid oil |
| CN111044343A (en) * | 2019-12-23 | 2020-04-21 | 宁波中循环保科技有限公司 | Method for enriching organic chlorine in waste lubricating oil |
| CN112920842A (en) * | 2019-12-05 | 2021-06-08 | 武汉科林化工集团有限公司 | Method for removing organic chlorine in waste lubricating oil |
| CN113755204A (en) * | 2021-09-22 | 2021-12-07 | 中国石油大学(华东) | Crude oil organochlorine transfer agent and dechlorination method |
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| US5114566A (en) * | 1989-03-09 | 1992-05-19 | Betz Laboratories, Inc. | Crude oil desalting process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571521A (en) * | 2012-07-18 | 2014-02-12 | 中国石油化工股份有限公司 | Method for removing chlorine-containing organic compound from oil product |
| CN103571521B (en) * | 2012-07-18 | 2015-08-26 | 中国石油化工股份有限公司 | A kind of method removing chlorine-containing organic compounds in oil product |
| CN103484155A (en) * | 2013-09-23 | 2014-01-01 | 中国林业科学研究院林产化学工业研究所 | Method for reducing organic chloride content of hydrocarbon fuel oil |
| CN105368580A (en) * | 2014-08-25 | 2016-03-02 | 中石化洛阳工程有限公司 | Organic chloride removing method for waste cooking oil |
| CN107459182A (en) * | 2017-07-18 | 2017-12-12 | 浙江工商大学 | A kind of sodium alkoxide dechlorination method of high chlorine distillation residual liquid |
| CN109439362A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of preparation method of the chloride shift agent for electric desalting apparatus |
| CN109337710A (en) * | 2018-09-28 | 2019-02-15 | 蒋旭辉 | A kind of liquid antichlor |
| CN109181759A (en) * | 2018-10-11 | 2019-01-11 | 宁波中循环保科技有限公司 | A kind of method of chlorine-containing organic compounds in removing waste oil |
| CN110408422A (en) * | 2019-08-08 | 2019-11-05 | 磁悬浮润滑油(苏州)有限公司 | A kind of method of organochlorine in removing liquid oil |
| CN112920842A (en) * | 2019-12-05 | 2021-06-08 | 武汉科林化工集团有限公司 | Method for removing organic chlorine in waste lubricating oil |
| CN111044343A (en) * | 2019-12-23 | 2020-04-21 | 宁波中循环保科技有限公司 | Method for enriching organic chlorine in waste lubricating oil |
| CN113755204A (en) * | 2021-09-22 | 2021-12-07 | 中国石油大学(华东) | Crude oil organochlorine transfer agent and dechlorination method |
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Application publication date: 20120613 |