CN114196435B - Dehydration method for desorption oil after silica gel adsorption - Google Patents
Dehydration method for desorption oil after silica gel adsorption Download PDFInfo
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- CN114196435B CN114196435B CN202111623190.9A CN202111623190A CN114196435B CN 114196435 B CN114196435 B CN 114196435B CN 202111623190 A CN202111623190 A CN 202111623190A CN 114196435 B CN114196435 B CN 114196435B
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 239000000741 silica gel Substances 0.000 title claims abstract description 102
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 102
- 238000003795 desorption Methods 0.000 title claims abstract description 76
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000018044 dehydration Effects 0.000 title claims abstract description 10
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000002199 base oil Substances 0.000 claims abstract description 21
- 238000004821 distillation Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000010705 motor oil Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 49
- 238000007599 discharging Methods 0.000 claims description 37
- 239000003292 glue Substances 0.000 claims description 24
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 235000019198 oils Nutrition 0.000 description 110
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 235000019476 oil-water mixture Nutrition 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
- C10G53/08—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one sorption step
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The application relates to a dehydration method of desorption oil after silica gel adsorption, which comprises the following steps of firstly carrying out reduced pressure distillation on waste engine oil to obtain distillate oil, then adding NMP into the distillate oil, and extracting to obtain extract and raffinate, and further comprises the following specific steps: carrying out normal pressure distillation treatment on the raffinate to prepare NMP gas and raffinate oil; introducing the raffinate oil into an adsorption device filled with silica gel for adsorption treatment, and preparing oil-containing silica gel and base oil; and placing the oil-containing silica gel in a desorption device, introducing water into the desorption device, and carrying out desorption treatment on the oil-containing silica gel by heating or introducing water vapor. According to the dehydration method for the desorption oil after the adsorption of the silica gel, the desorption oil generated after the adsorption of the oil-containing silica gel of the raffinate oil is subjected to boiling point steam stripping is introduced into the oil-containing silica gel of the adsorption of the raffinate oil for replacement treatment, so that the oil in the oil-containing silica gel can be effectively replaced, the yield of base oil is improved, the energy consumption for the subsequent desorption treatment of the oil-containing silica gel is reduced, and the economic benefit is improved.
Description
Technical Field
The application belongs to the technical field of lubricating oil production, and particularly relates to a dehydration method for desorbed oil after silica gel adsorption.
Background
The lubricating oil consists of base oil and additive in certain amount, and after being used for some time, the lubricating oil loses its normal functions due to the introduction of impurity, the deterioration of additive, etc. and becomes waste lubricating oil. With the development of technology and the improvement of environmental protection requirements, the waste lubricating oil can be treated to obtain regenerated base oil, which comprises the following specific steps: the method comprises the steps of firstly, generating distillate oil through reduced pressure distillation, then extracting the distillate oil through a polar solvent NMP (N-Methyl pyrrolidone ) to obtain raffinate (90% oil+10% NMP) and extract (90% NMP+10% oil), wherein NMP gas and extract oil can be obtained through repeated reduced pressure distillation of the extract, raffinate oil can be obtained through reduced pressure distillation of the raffinate, and the ideal component saturated oil content of the raffinate oil is more than 80%, but the chromaticity is deeper and is generally 10-14 # However, as a qualified product of the base oil, the saturated oil content must be more than 80% and the chromaticity must be less than 8, so that the chromaticity of the raffinate oil cannot reach the standard by adopting a reduced pressure distillation mode.
Once the chromaticity of the raffinate oil does not reach the standard, the conventional subsequent treatment mode adopts silica gel for adsorption treatment, inorganic silica gel is a high-activity adsorption material, is usually prepared by reacting sodium silicate with sulfuric acid and a series of post-treatment processes such as aging, acid soaking and the like, and the silica gel belongs to amorphous substances, is insoluble in water and any solvent, is nontoxic and odorless, has stable chemical properties, does not react with any substances except strong alkali and hydrofluoric acid, and is industrially used as an oil hydrocarbon decolorizer, a catalyst carrier, a pressure swing adsorbent and the like.
The strong coloring agent such as colloid and heavy aromatic oil in the raffinate oil adsorbed by the silica gel is adsorbed by the silica gel, so that the base oil component in the raffinate oil reaches the standard, the color number of the raffinate oil after adsorption reaches the standard, and the raffinate oil can be used for preparing lubricating oil.
The adsorption saturated oil-containing silica gel not only contains non-base oil, but also contains a part of base oil, when the oil-containing silica gel is recycled, the oil is often replaced by water in a boiling point stripping mode to form an oil-water-containing silica gel and an oil-water mixture, the water content in the oil-water mixture is about one percent, and the oil-water mixture needs further treatment to separate the water from the oil-water mixture.
Disclosure of Invention
The application aims to solve the problems and provide a dehydration method for desorbing oil after adsorption of silica gel.
The application realizes the above purpose through the following technical scheme:
the dehydration method of desorption oil after silica gel adsorption comprises the following steps of firstly carrying out reduced pressure distillation on waste engine oil to obtain distillate, then adding NMP into the distillate, and extracting to obtain extract and raffinate, and further comprising the following specific steps:
step S1, carrying out normal pressure distillation treatment on raffinate to prepare NMP gas and raffinate oil;
s2, introducing the raffinate oil into an adsorption device filled with silica gel for adsorption treatment, and preparing oil-containing silica gel and base oil;
s3, placing the oil-containing silica gel in a desorption device, and simultaneously introducing water into the desorption device and carrying out desorption treatment on the oil-containing silica gel by heating or introducing water vapor to prepare desorption oil, the oil-containing silica gel and the water-containing silica gel;
s4, refluxing the desorbed oil to an adsorption device and carrying out displacement treatment on the desorbed oil and the oil-containing silica gel in the adsorption device to obtain base oil and the displaced oil-containing silica gel, and placing the displaced oil-containing silica gel in the desorption device to carry out desorption treatment to obtain desorbed oil and the oil-containing and water-containing silica gel;
step S5, repeating the steps S3 to S4.
As a further optimization scheme of the application, the adsorption device comprises an adsorption tank body, a first silk screen arranged in the adsorption tank body, a discharging pipe arranged at the lower end of the adsorption tank body, a silica gel input mechanism arranged on the adsorption tank body, a raffinate oil input mechanism and a first glue discharging mechanism, wherein the first glue discharging mechanism is positioned above the silk screen;
the silica gel input mechanism is used for conveying silica gel into the adsorption tank body;
the raffinate oil input mechanism is used for conveying raffinate oil into the adsorption tank body;
the first glue discharging mechanism is used for discharging the silica gel which is saturated in adsorption out of the adsorption tank body.
As a further optimization scheme of the application, the base oil is discharged from a discharge pipe at the lower end of the adsorption tank body, and a first electromagnetic valve is arranged on the discharge pipe.
As a further optimization scheme of the application, the desorption device comprises a desorption tank body, a feed inlet arranged on the desorption tank body, a discharge outlet arranged at the lower end of the desorption tank body, a second silk screen connected to the inner wall of the desorption tank body, a water/water vapor input mechanism, a second glue discharging mechanism and a desorption oil discharge pipe connected to the desorption tank body, wherein the water/water vapor input mechanism is positioned below the second silk screen, and the second glue discharging mechanism is positioned above the second silk screen;
the water/water vapor input mechanism is used for conveying water or water vapor into the desorption tank body;
the second glue discharging mechanism is used for discharging the oil-containing and water-containing silica gel out of the desorption tank body.
As a further optimization scheme of the application, the desorption oil is conveyed into the adsorption tank body from the desorption oil discharge pipe and is subjected to displacement treatment with the oil-containing silica gel.
The application has the beneficial effects that:
according to the application, the desorption oil generated after the oil-containing silica gel absorbing the raffinate oil is subjected to boiling point steam stripping is introduced into the oil-containing silica gel absorbing the raffinate oil for replacement treatment, so that the oil in the oil-containing silica gel can be effectively replaced, the yield of the base oil is improved, the energy consumption for subsequent desorption treatment of the oil-containing silica gel is reduced, and the economic benefit is improved.
Drawings
FIG. 1 is a process flow diagram of the present application;
figure 2 is a mating view of an adsorption and desorption apparatus of the present application.
In the figure: 1. an adsorption tank body; 101. a discharge pipe; 102. a first electromagnetic valve; 103. a first wire mesh; 201. a silica gel storage tank; 202. a silica gel conveying pipeline; 203. a second electromagnetic valve; 204. an air draft pipeline; 205. a third electromagnetic valve; 206. an air extracting pump; 301. a raffinate oil input conduit; 302. a spray header; 303. a fourth electromagnetic valve; 304. an oil pump; 401. a first rubber tube; 402. a pump body; 5. a desorption tank body; 501. a feed inlet; 502. a discharge port; 503. a second wire mesh; 6. a water/water vapor input mechanism; 701. a second rubber tube; 702. a fifth electromagnetic valve; 8. and a desorption oil discharge pipe.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
Example 1
As shown in fig. 1, in the dehydration method of desorption oil after silica gel adsorption, firstly, the used engine oil is distilled under reduced pressure to obtain distillate, then NMP is added into the distillate and extraction is performed to obtain extract and raffinate, and the method further comprises the following specific steps:
step S1, carrying out normal pressure distillation treatment on raffinate to prepare NMP gas and raffinate oil;
s2, introducing the raffinate oil into an adsorption device filled with silica gel for adsorption treatment, and preparing oil-containing silica gel and base oil;
s3, placing the oil-containing silica gel in a desorption device, and simultaneously introducing water into the desorption device and carrying out desorption treatment on the oil-containing silica gel by heating or introducing water vapor to prepare desorption oil, the oil-containing silica gel and the water-containing silica gel;
s4, refluxing the desorbed oil to an adsorption device and carrying out displacement treatment on the desorbed oil and the oil-containing silica gel in the adsorption device to obtain base oil and the displaced oil-containing silica gel, and placing the displaced oil-containing silica gel in the desorption device to carry out desorption treatment to obtain desorbed oil and the oil-containing and water-containing silica gel;
step S5, repeating the steps S3 to S4.
According to the method, the desorption oil generated after the oil-containing silica gel absorbing the raffinate oil is subjected to boiling point steam stripping is introduced into the oil-containing silica gel absorbing the raffinate oil for replacement treatment, so that the oil in the oil-containing silica gel can be effectively replaced, the yield of base oil is improved, the energy consumption for subsequent desorption treatment of the oil-containing silica gel is reduced, and the economic benefit is improved.
As shown in fig. 2, the adsorption device comprises an adsorption tank body 1, a first silk screen 103 arranged in the adsorption tank body 1, a discharge pipe 101 arranged at the lower end of the adsorption tank body 1, a silica gel input mechanism, a raffinate oil input mechanism and a first glue discharging mechanism which are arranged on the adsorption tank body 1, wherein the first glue discharging mechanism is positioned above the silk screen;
the silica gel input mechanism is used for conveying silica gel into the adsorption tank body 1;
the raffinate oil input mechanism is used for conveying raffinate oil into the adsorption tank body 1;
the first glue discharging mechanism is used for discharging the silica gel which is saturated in adsorption out of the adsorption tank body 1.
The base oil is discharged from a discharge pipe 101 at the lower end of the adsorption tank body 1, and a first electromagnetic valve 102 is arranged on the discharge pipe 101.
The silica gel input mechanism comprises a silica gel conveying pipeline 202 connected to the position, close to the upper end, of the other side wall of the adsorption tank body 1, a silica gel storage tank 201 connected to one end of the silica gel conveying pipeline 202, a second electromagnetic valve 203 connected to the silica gel conveying pipeline 202, an air suction pipeline 204 connected to the position, close to the upper end, of one side wall of the adsorption tank body 1, a third electromagnetic valve 205 connected to the air suction pipeline 204, and an air suction pump 206 connected to one end of the air suction pipeline 204, wherein the position of the air suction pipeline 204 is higher than that of the silica gel conveying pipeline 202.
When the silica gel input mechanism works, the second electromagnetic valve 203 and the third electromagnetic valve 205 are opened, the air pump 206 starts to work, at this time, the air pump 206 works to form a certain negative pressure, so that the silica gel in the silica gel storage tank 201 is conveyed into the adsorption tank body 1 along with the wind flow, and the operation is stopped until the input amount of the silica gel reaches the set amount, and the specific amount is adjusted according to the actual production design.
The raffinate oil input mechanism comprises a raffinate oil input pipeline 301 connected to the upper end of the adsorption tank body 1, a spray header 302 connected to one end of the raffinate oil input pipeline 301, a fourth electromagnetic valve 303 connected to the raffinate oil input pipeline 301 and an oil pump 304 connected to the other end of the raffinate oil input pipeline 301, and the spray header 302 is located in the adsorption tank body 1.
When the raffinate oil input mechanism works, a fourth electromagnetic valve 303 on the raffinate oil input pipeline 301 is opened, an oil pump 304 is started, raffinate oil with a color number which does not reach the standard is continuously input through the oil pump 304, the raffinate oil is uniformly sprayed on the silica gel under the spraying action of the spray header 302, the raffinate oil flows to the first silk screen 103 under the action of gravity, and in the process, the silica gel can fully adsorb the raffinate oil.
The first glue discharging mechanism comprises a plurality of first glue discharging pipes 401 penetrating through the adsorption tank body 1 and a pump body 402 connected to the first glue discharging pipes 401, the first glue discharging mechanism conveys the oil-containing silica gel to a desorption device for desorption treatment, and then a new batch of oil-containing silica gel is generated in the adsorption tank body 1 by repeating the adsorption process so as to allow the desorption oil to flow back and carry out the replacement process.
As shown in fig. 2, the desorption device includes a desorption tank 5, a feed inlet 501 provided on the desorption tank 5, a discharge outlet 502 provided at the lower end of the desorption tank 5, a second wire mesh 503 connected to the inner wall of the desorption tank 5, a water/water vapor input mechanism 6, a second glue discharging mechanism, and a desorption oil discharge pipe 8 connected to the desorption tank 5, wherein the water/water vapor input mechanism 6 is located below the second wire mesh 503, and the second glue discharging mechanism is located above the second wire mesh 503;
the water/water vapor input mechanism 6 is used for conveying water or water vapor into the desorption tank body 5;
the second glue discharging mechanism is used for discharging the oil-containing and water-containing silica gel out of the desorption tank body 5.
The desorbed oil is delivered into the adsorption tank body 1 from the desorbed oil discharge pipe 8 and is subjected to displacement treatment with the oil-containing silica gel.
The second rubber discharging mechanism comprises a second rubber discharging pipe 701 and a fifth electromagnetic valve 702 connected to the second rubber discharging pipe 701; the glue discharging principle is the same as that of the first glue discharging mechanism;
wherein, water/steam input mechanism 6 is equipped with a plurality of gas pocket including the aeration pipe that runs through desorption jar body 5 on the body that the aeration pipe is located the second silk screen 503 below for the impact force of steam can be increased for the silica gel can be abundant with water contact, and boiling point strip process carries out, prepare desorption oil and oily, water silica gel, desorption oil carries oil pump 304 and carries out replacement processing with containing silica gel in the adsorption equipment through desorption oil discharge pipe 8, can utilize the water in the desorption oil to replace the oil in the oily silica gel, improve the output of base oil, and reduced the energy consumption of follow-up recovery base oil.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (2)
1. The dehydration method of desorption oil after silica gel adsorption comprises the following steps of firstly carrying out reduced pressure distillation on waste engine oil to obtain distillate, then adding NMP into the distillate, and extracting to obtain extract and raffinate, and is characterized by further comprising the following specific steps:
step S1, carrying out normal pressure distillation treatment on raffinate to prepare NMP gas and raffinate oil;
s2, introducing the raffinate oil into an adsorption device filled with silica gel for adsorption treatment, and preparing oil-containing silica gel and base oil;
s3, placing the oil-containing silica gel in a desorption device, and simultaneously introducing water into the desorption device and carrying out desorption treatment on the oil-containing silica gel by heating or introducing water vapor to prepare desorption oil, the oil-containing silica gel and the water-containing silica gel;
s4, refluxing the desorbed oil into an adsorption device and carrying out displacement treatment on the desorbed oil and the oil-containing silica gel in the adsorption device, displacing the oil in the oil-containing silica gel by utilizing water in the desorbed oil to obtain base oil and the displaced oil-containing silica gel, and placing the displaced oil-containing silica gel in the desorption device to carry out desorption treatment to obtain desorbed oil and the oil-containing and water-containing silica gel;
step S5, repeating the steps S3 to S4;
the adsorption device comprises an adsorption tank body, a first silk screen arranged in the adsorption tank body, a discharging pipe arranged at the lower end of the adsorption tank body, a silica gel input mechanism arranged on the adsorption tank body, a raffinate oil input mechanism and a first glue discharging mechanism, wherein the first glue discharging mechanism is arranged above the silk screen;
the silica gel input mechanism is used for conveying silica gel into the adsorption tank body;
the raffinate oil input mechanism is used for conveying raffinate oil into the adsorption tank body;
the first glue discharging mechanism is used for discharging the adsorption saturated silica gel out of the adsorption tank body;
the desorption device comprises a desorption tank body, a feed inlet arranged on the desorption tank body, a discharge outlet arranged at the lower end of the desorption tank body, a second silk screen connected on the inner wall of the desorption tank body, a water/water vapor input mechanism,
The second glue discharging mechanism and a desorption oil discharging pipe connected to the desorption tank body, the water/water vapor input mechanism is positioned below the second silk screen, the second glue discharging mechanism is positioned above the second silk screen, and the desorption oil is conveyed into the adsorption tank body from the desorption oil discharging pipe and is subjected to replacement treatment with the oil-containing silica gel;
the water/water vapor input mechanism is used for conveying water or water vapor into the desorption tank body;
the second glue discharging mechanism is used for discharging the oil-containing and water-containing silica gel out of the desorption tank body.
2. The dehydration method of desorbed oil after silica gel adsorption according to claim 1, wherein: the base oil is discharged from a discharge pipe at the lower end of the adsorption tank body, and a first electromagnetic valve is arranged on the discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623190.9A CN114196435B (en) | 2021-12-28 | 2021-12-28 | Dehydration method for desorption oil after silica gel adsorption |
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| CN202111623190.9A CN114196435B (en) | 2021-12-28 | 2021-12-28 | Dehydration method for desorption oil after silica gel adsorption |
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| CN114196435A CN114196435A (en) | 2022-03-18 |
| CN114196435B true CN114196435B (en) | 2023-08-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1678298A (en) * | 1922-03-16 | 1928-07-24 | Silica Gel Corp | Process for refining oils and waxes |
| CN111944597A (en) * | 2020-07-20 | 2020-11-17 | 安徽国孚润滑油工业有限公司 | Dissolved residual oil adsorption process by using primary waste silicone oil glue |
| CN112619628A (en) * | 2020-12-04 | 2021-04-09 | 安徽国孚凤凰科技有限公司 | Method for regenerating adsorbent after adsorption and refining of regenerated base oil |
| CN214076690U (en) * | 2020-12-04 | 2021-08-31 | 安徽国孚凤凰科技有限公司 | Oily waste silica gel desorption device |
-
2021
- 2021-12-28 CN CN202111623190.9A patent/CN114196435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1678298A (en) * | 1922-03-16 | 1928-07-24 | Silica Gel Corp | Process for refining oils and waxes |
| CN111944597A (en) * | 2020-07-20 | 2020-11-17 | 安徽国孚润滑油工业有限公司 | Dissolved residual oil adsorption process by using primary waste silicone oil glue |
| CN112619628A (en) * | 2020-12-04 | 2021-04-09 | 安徽国孚凤凰科技有限公司 | Method for regenerating adsorbent after adsorption and refining of regenerated base oil |
| CN214076690U (en) * | 2020-12-04 | 2021-08-31 | 安徽国孚凤凰科技有限公司 | Oily waste silica gel desorption device |
Non-Patent Citations (1)
| Title |
|---|
| 钟秦等.吸附和吸附剂.《化工原理 第4版》.国防工业出版社,2019, * |
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