CN108017566A - A kind of purification process of lube oil additive mixed liquor - Google Patents
A kind of purification process of lube oil additive mixed liquor Download PDFInfo
- Publication number
- CN108017566A CN108017566A CN201610967011.6A CN201610967011A CN108017566A CN 108017566 A CN108017566 A CN 108017566A CN 201610967011 A CN201610967011 A CN 201610967011A CN 108017566 A CN108017566 A CN 108017566A
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- CN
- China
- Prior art keywords
- mixed liquor
- oil additive
- lube oil
- purification process
- additive mixed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C333/00—Derivatives of thiocarbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C333/14—Dithiocarbamic acids; Derivatives thereof
- C07C333/18—Esters of dithiocarbamic acids
- C07C333/20—Esters of dithiocarbamic acids having nitrogen atoms of dithiocarbamate groups bound to hydrogen atoms or to acyclic carbon atoms
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to field of fine chemical, it is related to a kind of new technology for purifying of lube oil additive mixed liquor, due to containing water, NaCl and NaOH in mixed liquor, need purification process to ensure product colourity, be exactly specifically water, NaCl and NaOH using ceramic membrane filter equipment to be filtered to remove in mixed liquor.By ceramic membrane filter equipment, the water content in lube oil additive mixed liquor can be down to below 50ppm, NaCl contents are down to below 10ppm, and pH is neutrality.
Description
Technical field
The invention belongs to field of fine chemical, is related to a kind of new technology for purifying of lube oil additive mixed liquor, due to mixed
Close and contain water, NaCl and NaOH in liquid, it is necessary to which purification process guarantee product colourity, is exactly specifically to utilize ceramic membrane filter equipment
Come the water, NaCl and NaOH being filtered to remove in mixed liquor.
Background technology
It is well known that oil product inevitably contacts generation with the oxygen in air and metal surface in use
Oxidation reaction and go bad, increase oil viscosity, acid number increase generates greasy filth and precipitation, and metal parts is produced corrosion and
Abrasion.Antioxidant is added into oil product, can effectively suppress oxidation reaction, extends the service life of oil product, improves the use of oil product
Performance.Dialkyl dithio amino formate uses in oil product, have prominent antioxygenic property and good abrasion resistance and
Extreme pressure property, while also there is good oil-soluble and ashless, be widely used in steam turbine oil, hydraulic oil, gear oil,
In the oil products such as I. C. engine oil and lubricating grease.
It is anti-that a kind of tubular type of dialkyl dithio amino formate is described in Chinese patent application CN2013104658627
Answer the method for continuously synthesizing of device：By micro-tubular reactor design temperature, after temperature stabilization, by the sodium hydroxide of di-n-butylamine sum
Mixed liquor is squeezed into micro passage reaction by constant flow pump, meanwhile, the mixed solution of two fluidisation carbon and dichloromethane is also squeezed into
In microchannel, material reacts in microchannel, and discharging enters in the four-hole boiling flask with condenser pipe and stirring, and insulation maintains, then
Be warming up to reaction 0.5 it is small when, liquid separation.Obtain water content and be more than 0.9%, pH 11, and have the dialkyl dithio of a certain amount of NaCl
Carbamate mixed liquor.
Current technique, all employs the technique filtered after washing, or distillation.In Chinese patent CN1132813C,
Propose toluene extraction organic phase desalination process, or washing process；Chinese patent CN1159294C proposes to add industrial naptha
Extracting, the technique for separating redistillation water removal after NaCl.Old technology brings solvent into and needs to handle, or washing distillation technique.
Using ceramic membrane filter equipment, the water and NaCl to dissociate in mixed liquor can be once removed, it is easy to operate, work well.
The content of the invention
The technical problems to be solved by the invention be for lube oil additive mixed liquor water removal in the prior art, desalination,
Except NaOH techniques, this technological operation is simple, can handle the water content in mixed liquor to below 50ppm, NaCl contents handle to
Below 10ppm, pH are neutrality, with obvious advantage compared with old technology.
Technical scheme：The purification process of lube oil additive mixed liquor, it is characterized in that by lube oil additive
Mixed liquor is heated to increase its mobility, is squeezed into ceramic membrane filter equipment with pump, keeps the pressure in device channels, liquid
Discharge and collect after being circulated in equipment, obtain lube oil additive after purification.
Usually, the present invention is that mixed liquor is heated to certain temperature, i.e., 70 DEG C ~ 90 DEG C, ceramic membrane filter is squeezed into pump
Equipment circulating filtration, for control flow rate pump to ensure that pressure is not higher than 1MPa in filter plant, mixed liquor circulates 0.1 in filter
~ 2 it is small when, it is spare to receive cleaner liquid.This method is general easily operated, and speed is fast, and labor intensity is low, safe.
The lube oil additive of the present invention is：Dialkyl dithio amino formate.
It is to remove water, NaCl, NaOH in lube oil additive mixed liquor using ceramic membrane filter equipment in the present invention.
Beneficial effects of the present invention：, can be by the water content in lube oil additive mixed liquor by ceramic membrane filter equipment
Below 50ppm is down to, NaCl contents are down to below 10ppm, and pH is neutrality.
Embodiment
Below by embodiment, the present invention is further elaborated, but is not limited only to the present embodiment.
Embodiment 1
Mixed liquor maintains 80 DEG C, and ceramic membrane filter equipment is squeezed into pump, adjusts flow velocity and maintains pressure about 0.2MPa in filtration system,
Liquid circulated in filter 1.5 it is small when, collect filtrate.Filtrate is transparent, and water content 40ppm, pH ≈ 7, NaCl is not detected.
Embodiment 2
Mixed liquor squeezes into filter plant after being heated to 90 DEG C, adjust pump speed and maintain pressure about 0.7MPa in filtration system, liquid exists
When circulation 0.2 is small in filter, filtrate is collected.Filtrate is transparent, and water content 50ppm, pH ≈ 7, NaCl is not detected.
Embodiment 3
Mixed liquor squeezes into filter plant after being heated to 70 DEG C, adjust pump speed and maintain pressure about 1MPa in filtration system, liquid is in mistake
When circulation 2 is small in filter, filtrate is collected.Filtrate is transparent, and water content 50ppm, pH ≈ 7, NaCl is not detected.
Comparative example
Conventional mixed liquor water removal desalination process：Deionized water 500ml is added in mixed liquor, stirring maintains 5min, and liquid separation, repeats
After operation is total to three times, organic phase pH ≈ 7.Vacuum distillation water removal, water content are down to 80ppm.Mixed liquor is muddy after distillation processing.Add
After hot to 80 DEG C, filtered using G4 sand core funnels, collect filtrate.Filtrate is transparent, and funnel sand core surface salts out.
By compared with conventional purification process, the purification process process using ceramic membrane filter equipment to mixed liquor,
Operating procedure greatly reduces far fewer than conventional treatment process, wastewater flow rate, and except water treatment efficiency is better than distillation processing mode.
Claims (5)
- A kind of 1. purification process of lube oil additive mixed liquor, it is characterized in that lube oil additive mixed liquor is heated to increase Its mobility, is squeezed into ceramic membrane filter equipment with pump, keeps the pressure in device channels, liquid circulates heel row in equipment Go out to collect, obtain lube oil additive after purification.
- 2. the purification process of lube oil additive mixed liquor as claimed in claim 1, it is characterised in that the lube oil additive For：Dialkyl dithio amino formate.
- 3. the purification process of lube oil additive mixed liquor as claimed in claim 1, it is characterised in that lube oil additive mixes The temperature of liquid maintains 70 DEG C ~ 90 DEG C.
- 4. the purification process of lube oil additive mixed liquor as claimed in claim 1, it is characterised in that interior pressure in device channels Not higher than 1MPa.
- 5. the purification process of lube oil additive mixed liquor as claimed in claim 1, it is characterised in that mixed liquor is in equipment When circulation time is 0.1 ~ 2 small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967011.6A CN108017566B (en) | 2016-10-28 | 2016-10-28 | Purification method of lubricating oil additive mixed solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967011.6A CN108017566B (en) | 2016-10-28 | 2016-10-28 | Purification method of lubricating oil additive mixed solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108017566A true CN108017566A (en) | 2018-05-11 |
| CN108017566B CN108017566B (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610967011.6A Active CN108017566B (en) | 2016-10-28 | 2016-10-28 | Purification method of lubricating oil additive mixed solution |
Country Status (1)
| Country | Link |
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| CN (1) | CN108017566B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1364759A (en) * | 2001-01-18 | 2002-08-21 | 中国石油化工股份有限公司 | preparation of dialkyl dithio amino formate |
| CN105968362A (en) * | 2016-07-25 | 2016-09-28 | 江苏久吾高科技股份有限公司 | Purifying method and device for hydroxyl silicone oil |
-
2016
- 2016-10-28 CN CN201610967011.6A patent/CN108017566B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1364759A (en) * | 2001-01-18 | 2002-08-21 | 中国石油化工股份有限公司 | preparation of dialkyl dithio amino formate |
| CN105968362A (en) * | 2016-07-25 | 2016-09-28 | 江苏久吾高科技股份有限公司 | Purifying method and device for hydroxyl silicone oil |
Non-Patent Citations (1)
| Title |
|---|
| 张宏伟等: "《膜法水处理实验》", 31 March 2015, 中国纺织出版社 * |
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| CN108017566B (en) | 2020-06-02 |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |
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