CN212316060U - Waste lubricating oil regeneration device - Google Patents
Waste lubricating oil regeneration device Download PDFInfo
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- CN212316060U CN212316060U CN202020514703.7U CN202020514703U CN212316060U CN 212316060 U CN212316060 U CN 212316060U CN 202020514703 U CN202020514703 U CN 202020514703U CN 212316060 U CN212316060 U CN 212316060U
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Abstract
The utility model discloses a useless lubricating oil regenerating unit, including the oil water separator who sets up according to the preface, membrane cross flow separator, catalytic hydrogenation ware, vapour and liquid separator and rectifier, oil water separator is used for the impurity separation of useless lubricating oil, the oil that oil water separator came out carries out membrane cross flow through membrane cross flow separator and filters, the membrane penetrant that membrane cross flow separator came out gets into catalytic hydrogenation ware and carries out catalytic hydrogenation, the reaction product enters into the oil and the residual oil sediment of getting after the hydrogenation of vapour and liquid separator separation, the oil after the hydrogenation obtains light oil and various viscosity II III class base oil through the distiller, the oil sediment of separation absorbs the acid desorption through the absorption tower. The utility model removes most of impurities in the waste lubricating oil through membrane cross flow filtration, and then performs hydrodeoxygenation, desulfurization, dechlorination and denitrification, thereby greatly improving the total yield of the waste lubricating oil; the residual liquid of the membrane is directly sold as an asphalt product, and compared with the traditional hydrogenation process, the product has higher saturated hydrocarbon content, higher viscosity index and lower sulfur content.
Description
Technical Field
The utility model relates to a useless lubricating oil regenerating unit.
Background
In the field of petrochemical industry, the regeneration method of industrial waste lubricating oil is generally coarse filtration and re-separation, and the prior published patents are as follows:
CN201310190190.3 a membrane treatment integrated technology to useless lubricating oil purification regeneration adopts the nature to subside usually, adopts polarity organic solvent extraction processing, and then separation filtration, this utility model has adopted metal membrane filtration, but still adopts carclazyte decoloration, and the pretreatment is complicated, process flow is longer, and solid useless carclazyte sediment is still dangerous useless, is difficult to handle.
CN200810024948.5 is a method for purifying waste lubricating oil, the waste lubricating oil is roughly filtered, the waste lubricating oil is heated to 50-150 ℃, and then the heated waste lubricating oil is input into a membrane module provided with a modified ceramic membrane for separation, although the ceramic membrane is modified, the membrane filtration flux is low, the color of clear liquid is still deep, the requirements of base oil cannot be met, and the large-scale popularization is difficult to achieve.
The traditional rectification process has high energy consumption, direct hydrogenation of colloid and metal easily causes catalyst poisoning and inactivation, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a waste lubricating oil regenerating unit. Can effectively shorten the regeneration process flow and has high efficiency.
The utility model provides a following technical scheme:
a used lubricating oil regenerating device is characterized in that: the device comprises an oil-water separator, a membrane cross-flow separator, a catalytic hydrogenation reactor, a gas-liquid separator and a rectifier which are sequentially arranged, wherein the oil-water separator is used for impurity separation of waste lubricating oil, oil from the oil-water separator is subjected to membrane cross-flow filtration through the membrane cross-flow separator, membrane penetrating fluid from the membrane cross-flow separator enters the catalytic hydrogenation reactor for catalytic hydrogenation, reaction products enter the gas-liquid separator for separation to obtain hydrogenated oil and residual oil residues, the hydrogenated oil is subjected to rectifier to obtain light oil and II/III base oil with various viscosities, and the separated oil residues are absorbed by an absorption tower for acid removal.
Further, the flow direction of the feed liquid in the membrane cross-flow separator is parallel to the surface of the filter membrane.
Furthermore, the membrane material of the membrane cross-flow separator is inorganic material or organic material, the inorganic material is ceramic, silicon carbide, metal or silicon oxide, and the organic material is polyvinylidene fluoride (PVDF) or Polytetrafluoroethylene (PTFE).
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model removes colloid, carbon deposit, metal, macromolecular asphaltene and salt in the waste lubricating oil through membrane cross flow filtration, and then carries out hydrodeoxygenation, desulfurization, dechlorination and denitrification, thereby greatly improving the total yield of the waste lubricating oil, solving the problems of difficult regeneration, large pollution, unstable quality and the like of the waste lubricating oil, shortening the process flow, reducing the equipment investment cost and increasing the enterprise income; the residual membrane liquid is directly sold as an asphalt product, so that the waste lubricating oil is basically recycled, the non-asphaltene recovery rate is improved, and the economic benefit of an enterprise is greatly improved; the waste lubricating oil contains a part of hydrogenated oil, the catalytic hydrogenation of the hydrogenated oil is deep hydrogenation, and compared with the traditional hydrogenation process, the product has higher saturated hydrocarbon content and viscosity index and lower sulfur content.
Drawings
Fig. 1 is a structure diagram of the device of the present invention.
FIG. 2 is a process flow diagram of the present invention.
Fig. 3 is a schematic diagram of the membrane cross flow separator of the present invention.
In the figure: 1. an oil-water separator; 2. a membrane cross-flow separator; 3. a catalytic hydrogenation reactor; 4. a gas-liquid separator; 5. a rectifier; 6. an absorption tower.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 shows, the utility model discloses a useless lubricating oil regenerating unit, including oil water separator 1 that sets gradually, membrane cross-flow separator 2, catalytic hydrogenation ware 3, vapour and liquid separator 4 and rectifier 5, oil water separator 1 is used for the impurity separation of useless lubricating oil, the oil that oil water separator 1 came out carries out membrane cross-flow filtration through membrane cross-flow separator 2, the membrane penetrant that membrane cross-flow separator 2 came out gets into catalytic hydrogenation ware 3 and carries out catalytic hydrogenation, the reaction product gets into the oil after the vapour and liquid separator 4 separation and gets hydrogenation and remains the dregs of fat, the oil after the hydrogenation obtains light oil and various viscosity II III class base oil through rectifier 5, the dregs of fat of separating absorb the acid desorption through absorption tower 6.
In FIG. 3, the flow direction of feed liquid in the membrane cross-flow separator is parallel to the surface of the filtration membrane.
The cross-flow mode avoids the blockage phenomenon generated in the process of dead-end filtration. The feed liquid flows through the surface of the membrane, the liquid penetrates through the filtering membrane under the action of pressure, solid particles and suspended matters are intercepted, the feed liquid has enough flow velocity to strip the solid particles intercepted by the membrane from the surface of the membrane, and the continuous stripping prevents the solid particles from gathering on the membrane, so that the pollution of the membrane is reduced to the minimum degree.
As shown in fig. 2, a method for regenerating used lubricating oil specifically includes the following steps:
(1) heating the waste lubricating oil to 50-100 ℃, and separating oil, water and mechanical impurities by the gravity difference of the oil-water separator;
(2) filtering colloid, carbon deposit, metal, macromolecular asphaltene, salt and macromolecular additives by a membrane cross-flow separator through membrane cross-flow with the aperture of 1-300 KDa;
(3) adding the membrane permeate to a catalytic hydrogenation reactor, reacting at a hydrogen: oil volume ratio 200-: 1. the temperature is 100-: 1.2-5, carrying out catalytic hydrogenation;
(4) the residual liquid of the membrane is used as asphalt raw material;
(5) the hydrogenated oil enters a gas-liquid separator for oil-gas separation, the separated oil is distilled by a fine residue device to obtain light oil and base oil with various viscosities II/III, and the separated gas enters an absorption tower and is added with alkali liquor to absorb acid to generate salt;
(6) and adding the performance additive into the base oil for blending to obtain a finished lubricating oil product.
The separation in step (1) may be carried out by three stages of separation, settling by baffling or centrifugation.
The membrane filtration in the step (2) is cross-flow filtration, the material is inorganic material or organic material, the inorganic material is ceramic, silicon carbide, metal or silicon oxide, and the organic material is PVDF or PTFE.
In the step (3), the hydrogenation process is a batch type or a continuous type.
And (4) adding a dehydration process to dehydrate the asphalt raw material.
Because the viscosity of the waste lubricating oil is high, the membrane filtration flux is low, and the problems of concentration polarization, serious membrane pollution and the like existing in the membrane filtration process can influence the membrane filtration speed, the membrane cross-flow filtration is adopted, so that the filtration channel is not easy to block, the pore diameter is smaller, the microfiltration effect can be achieved, and the pollution can be reduced by continuous production.
The membrane cross-flow filtration is a physical separation of feed liquid by using a porous membrane material as a filter medium, the feed pump is used for enabling the feed liquid to flow at a high speed to generate high pressure, the high pressure can enable small molecules smaller than the pore diameter to be separated out of a membrane tube, namely filtrate, and meanwhile, an instantaneous filter cake layer is formed on the inner side of the membrane tube and then is flushed away by the feed liquid flowing at a high speed, a filtration channel cannot be blocked, namely, the formation of a filter cake is prevented through shearing force, particles or substances with different molecular weights can be separated from the feed liquid, and a required product is obtained.
The utility model discloses a membrane cross-flow separation can effectively get rid of colloid, carbon deposit, metal, macromolecule asphaltene, salinity, macromolecule additive to catalyst pollution and poisoning problem when solving membrane pollution problem and catalytic hydrogenation.
The utility model discloses can effectively solve the bottleneck problem of useless lubricating oil regeneration, membrane infiltration clear solution accessible hydrofining obtains saturated hydrocarbon content > 90%, and sulfur content (mass fraction) < 0.3, II class base oil and the III class base oil that Viscosity Index (VI) > 120 of Viscosity Index (VI) 80-120.
The residual liquid of the membrane can be used as asphalt raw material after dehydration, the waste lubricating oil is basically and effectively utilized, and the problem of environmental pollution in the regeneration process of the waste lubricating oil is solved.
Except that a small amount of physically separated oil residue and salt generated by acid absorption of alkali after trace hydrogenation reduction are contained, the method has no other pollution basically. The process flow is short, the investment is small, the operation is simple, the system can run fully automatically, and the national energy-saving emission-reducing industry guide is met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A used lubricating oil regenerating device is characterized in that: the device comprises an oil-water separator (1), a membrane cross-flow separator (2), a catalytic hydrogenation reactor (3), a gas-liquid separator (4) and a rectifier (5) which are sequentially arranged, wherein the oil-water separator (1) is used for separating impurities of waste lubricating oil, oil from the oil-water separator (1) is subjected to membrane cross-flow filtration through the membrane cross-flow separator (2), membrane penetrating fluid from the membrane cross-flow separator (2) enters the catalytic hydrogenation reactor (3) for catalytic hydrogenation, reaction products enter the gas-liquid separator (4) for separation to obtain hydrogenated oil and residual oil residue, the hydrogenated oil is subjected to absorption acid removal through an absorption tower (6) to obtain light oil and II/III base oil with various viscosities through the rectifier (5).
2. The used lubricating oil regeneration device according to claim 1, characterized in that: the flow direction of the feed liquid in the membrane cross-flow separator (2) is parallel to the surface of the filter membrane.
3. The used lubricating oil regeneration device according to claim 1, characterized in that: the membrane material of the membrane cross-flow separator (2) is an inorganic material or an organic material, the inorganic material is ceramic, silicon carbide, metal or silicon oxide, and the organic material is polyvinylidene fluoride (PVDF) or Polytetrafluoroethylene (PTFE).
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| CN202020514703.7U CN212316060U (en) | 2020-04-09 | 2020-04-09 | Waste lubricating oil regeneration device |
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| CN202020514703.7U CN212316060U (en) | 2020-04-09 | 2020-04-09 | Waste lubricating oil regeneration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575101A (en) * | 2020-04-09 | 2020-08-25 | 南京弘顺和生物科技有限公司 | Waste lubricating oil regeneration device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575101A (en) * | 2020-04-09 | 2020-08-25 | 南京弘顺和生物科技有限公司 | Waste lubricating oil regeneration device and method |
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Address after: 210032 Room 305, block B, National University Science Park, Southeast University, No.2 Dongda Road, Jiangbei new district, Nanjing City, Jiangsu Province Patentee after: Nanjing hongshunhe Biotechnology Co.,Ltd. Patentee after: JILIN PROVINCE DESIGN & Research Institute OF PETROCHEMICAL ENGINEERING Address before: No. 1009, Tianyuan East Road, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Nanjing hongshunhe Biotechnology Co.,Ltd. Patentee before: JILIN PROVINCE DESIGN & Research Institute OF PETROCHEMICAL ENGINEERING |