CN105038846A - Feed filter back flush technique and back flush system in lubricating oil hydrogenation process - Google Patents
Feed filter back flush technique and back flush system in lubricating oil hydrogenation process Download PDFInfo
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- CN105038846A CN105038846A CN201510528420.1A CN201510528420A CN105038846A CN 105038846 A CN105038846 A CN 105038846A CN 201510528420 A CN201510528420 A CN 201510528420A CN 105038846 A CN105038846 A CN 105038846A
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- 238000000034 method Methods 0.000 title claims abstract description 73
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 49
- 239000003921 oil Substances 0.000 claims abstract description 117
- 238000010926 purge Methods 0.000 claims abstract description 112
- 238000011010 flushing procedure Methods 0.000 claims abstract description 52
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- 229910052757 nitrogen Inorganic materials 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 18
- 230000008929 regeneration Effects 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000002283 diesel fuel Substances 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 24
- 239000002199 base oil Substances 0.000 description 28
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 25
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 230000002000 scavenging effect Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 9
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- 238000011001 backwashing Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 7
- 238000010025 steaming Methods 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
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- 230000007774 longterm Effects 0.000 description 5
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- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000004517 catalytic hydrocracking Methods 0.000 description 3
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- 239000002245 particle Substances 0.000 description 3
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- 229910001220 stainless steel Inorganic materials 0.000 description 3
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Abstract
The invention provides a feed filter back flush technique and back flush system in a lubricating oil hydrogenation process. The technique comprises the following steps: filtering raw oil through a first feed filter; after the pressure difference between the inlet and outlet of the first feed filter reaches a set value, switching the raw oil to a second feed filter for filtration; introducing a backflow medium into the first feed filter to perform purging, and introducing the back flush medium into the first feed filter to perform flushing, thereby obtaining the cleaned first feed filter; and finally, after the pressure difference between the inlet and outlet of the second feed filter reaches a set value, switching the raw oil to the cleaned first feed filter for filtration. The technique and system provided by the invention can stably work for a long time, has longer service life, and is simple to operate.
Description
Technical field
The present invention relates to lube oil hydrogenation technical field, more particularly, relate to the charge filter backwash technique in a kind of lube oil hydrogenation process and back-purge system.
Background technology
Hydroprocessing process produces that lubricating oil is the end of the sixties, the beginning of the seventies develops rapidly and push the novel process of industrial application to.Briefly, hydrogenation is exactly the content improving protium in oil.Hydro-treated lube base oil can improve fuel economy, is conducive to environmental protection, and this technique can produce the lubricant base of high viscosity index (HVI) with low-quality raw materials, and has the advantages that yield is high, flexibility of operation is large and by-product value is high.Thus, obtain within lubricating oil field and pay close attention to widely and development energetically.
Lubricant base hydrotreatment (hydrocracking) is under relatively exacting terms, by hydrogenation technique (hydrotreatment, hydrocracking, hydroisomerization, hydrofining, catalytic dewaxing), change base oil chemical constitution, oil product is carried out to the process of chemical modification, significantly can improve its sticky, warm nature energy, remove a large amount of impurity, abundant saturated polycyclic aromatic hydrocarbons, remove the non-hydrocarbons of sulfur-bearing, nitrogen, oxygen, undesirable components becomes ideal composition the most at last, thus reaches the object with time raw material production high-quality lubricating oil.
What hydroprocessing technique adopted is chemical conversion process, namely under the effect of catalyzer and hydrogen, is reacted by Deep Hydrotreating, thus improves the viscosity index of base oil, makes oil product obtain deep refining simultaneously.Following chemical reaction can be there is: the heterogeneous ring compound of sulfur-bearing, nitrogen, oxygen adds hydroperoxide decomposition reaction in hydroprocessing processes; Condensed-nuclei aromatics hydrotreated lube base oil generates the reaction of condensed ring naphthenic hydrocarbon; The hydroisomerization reaction of alkane and naphthenic hydrocarbon; The ring-opening reaction of naphthenic hydrocarbon; The hydrocracking reaction of alkane.Finally, lubricating oil is improved in color, stability and smell etc., the susceptibility of oxidation inhibitor is significantly improved.
But the stock oil source that existing lube oil hydrogenation manufacturer uses is unstable, and it is uneven in quality, especially the various impurity in stock oil oil product are various, and then cause the instability in whole HDF of lubricating oil process, the serious quality of finished that have impact on hydro-treated lube base oil.And usually for the filtering system of stock oil, manual operation is comparatively loaded down with trivial details and workload is large, and usually because the regeneration cleaning of filtering system is not thorough, cause the filtering system just come into operation, just poor filtration effect is there is in short period of time, not only need frequent better strainer, and in Renewal process, easily cause impurity, particle, iron rust, polycyclic aromatic hydrocarbons etc. to seal in the way of escape, and then negative impact is caused to the High pressure feeding pump assembly in follow-up lube oil hydrogenation system, reactor bed pressure drop and catalyst activity, life-span etc.In addition the condensed-nuclei aromatics contained in stock oil, wax and iron rust and impurity etc., easily cause fed filtration system to consume fast, scrap and wait cost control problem soon.
Thus, how to find a kind of fed filtration system reprocessing cycle system be better applicable in lube oil hydrogenation process, make the fed filtration system in lube oil hydrogenation process, work that can be steady in a long-term, and extending its work-ing life, is one of manufacturer's problem demanding prompt solution in field always.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide the charge filter backwash technique in a kind of lube oil hydrogenation process and back-purge system, i.e. fed filtration system reprocessing cycle technique and the recycle system, charge filter backwash technique provided by the invention and back-purge system, work that can be steady in a long-term, there is longer work-ing life, and simple to operate.
The invention provides the charge filter backwash technique in a kind of lube oil hydrogenation process, comprise the following steps:
A) stock oil is filtered through the first charge filter, after the first charge filter inlet outlet pressure differential reaches set(ting)value, switch stock oil and filter through the second charge filter;
B) blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after clearing up;
C) after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned cleaning and filter.
Preferably, automatic switchover is switched to described in.
Preferably, described set(ting)value is for being more than or equal to 0.05MPa.
Preferably, described set(ting)value is 0.05 ~ 0.2MPa.
Preferably, described blowback medium is nitrogen and/or rare gas element; Described back flushing medium is diesel oil and/or white oil.
Preferably, described step b) be specially:
B1) blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after brewing;
B2) the first charge filter after above-mentioned brewing is passed into again after blowback medium purges, obtain the first charge filter after back flushing.
Preferably, described step c) after, also comprise,
D) blowback medium is passed into the second charge filter to purge, then back flushing medium is passed into the second charge filter brew, obtain the second charge filter after clearing up;
When e) being filtered by first charge filter of stock oil after described cleaning, when the initial inlet outlet pressure differential of the first charge filter after described cleaning reaches the second set(ting)value, stock oil is switched to the second charge filter after above-mentioned cleaning;
F) blowback steam is passed into the first charge filter to purge, then blowback medium is passed into the first charge filter carry out drying purge after, obtain regenerate after the first charge filter;
G) after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned regeneration.
Preferably, described second set(ting)value is for being more than or equal to 0.05MPa.
The invention provides the charge filter back-purge system in a kind of lube oil hydrogenation process, comprise stock oil feeding line, filter rear material oil outlet pipeline, charge filter group, blowback medium intake pipeline, back flushing medium intake pipeline and sump oil outlet line;
Described charge filter group comprises the first charge filter and the second charge filter that are arranged in parallel;
Described stock oil feeding line is connected with the material inlet of described charge filter group; After described filter, material oil outlet pipeline is connected with the material outlet of described charge filter group;
Described blowback medium intake pipeline is connected with the purging import of described charge filter group; Described back flushing medium intake pipeline is connected with the flushing import of described charge filter group respectively;
Described sump oil outlet line exports with the purging of described charge filter group respectively and is connected; Described sump oil outlet line exports with the flushing of described charge filter group respectively and is connected.
Preferably, described back-purge system also comprises steam input pipe line; Described steam input pipe line exports with the purging of described charge filter group respectively and is connected.
The invention provides the charge filter backwash technique in a kind of lube oil hydrogenation process, comprise the following steps, first stock oil is filtered through the first charge filter, after the first charge filter inlet outlet pressure differential reaches set(ting)value, switch stock oil and filter through the second charge filter; Then blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after clearing up; Last after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned cleaning and filter.Compared with prior art, charge filter backwash technique provided by the invention and back-purge system, can remove preferably in stock oil charging containing condensed-nuclei aromatics, wax and iron rust and impurity etc., and the work of long-term stability, there is longer work-ing life, and it is simple to operate, especially automatic control program have both the form of Non-follow control function, feeding line change after establishing automatic backwashing filter, eliminate all hidden danger or the drawback of pure artificial manual backwashing, reduce when rinsing manually the person, backwash filter filter core, High pressure feeding pump assembly, reactor bed pressure drop and catalyst activity, the negative impact in life-span etc., also solve existing manual backwashing filter device and the high problem of fixed differential Filter Back Washing frequency.Experimental result shows, when processing identical day output lubricating oil, charge filter backwash technique provided by the invention compares original technique, and the consumption of blowback medium saves 94%, and the consumption of back flushing medium saves 97%, in addition, owing to reducing foreign matter content in stock oil, particularly micro-metallic impurity significantly reduce, and catalyst activity is improved, extend its work-ing life, improve lube product quality.
Accompanying drawing explanation
Fig. 1 is the charge filter back-purge system schematic diagram in lube oil hydrogenation process of the present invention.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The all raw materials of the present invention, be not particularly limited its source, commercially buy or prepare according to ordinary method well known to those skilled in the art.
The all raw materials of the present invention, be not particularly limited its purity, the present invention preferably adopts analytical pure.
The invention provides the charge filter backwash technique in a kind of lube oil hydrogenation process, comprise the following steps:
A) stock oil is filtered through the first charge filter, after the first charge filter inlet outlet pressure differential reaches set(ting)value, switch stock oil and filter through the second charge filter;
B) blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after clearing up;
C) after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned cleaning and filter.
The present invention first by stock oil through first charge filter filter after, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil; The condition of the present invention to described filtration is not particularly limited, with the filtration condition that stock oil well known to those skilled in the art filters, the temperature of the preferred described filtration of the present invention is preferably 100 ~ 120 DEG C, be more preferably 105 ~ 115 DEG C, import and/or the top hole pressure of described strainer are preferably greater than 0.75MPa, be more preferably 0.77 ~ 1.0MPa, most preferably be 0.8 ~ 0.9MPa.
The present invention is not particularly limited described first charge filter, with the strainer filtered for stock oil well known to those skilled in the art, the present invention is for improving filter effect and backwash effect, preferably the first charge filter adopts 316L Stainless Steel Cloth filter core, and by treatment capacity, choose suitable filtration area to ensure best surface velocity, effectively solid impurity to be trapped in the outside surface of filter core, form loose and equally distributed filter cake, contribute to follow-up gas auxiliary liq and carry out blowback removal.The present invention is not particularly limited follow-up lube oil hydrogenation process, with HDF of lubricating oil well known to those skilled in the art.
The present invention, subsequently after the first charge filter inlet outlet pressure differential reaches set(ting)value, switches stock oil after the second charge filter filters, enters follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.Described switching is preferably automatically switches; Charge filter backwash technique of the present invention is preferably charge filter automatic backwash technique, namely by the working condition of the automatic monitoring device inlet outlet pressure differential of monitor filter, liquid level and valve at any time; The present invention is not particularly limited described automatic monitoring device, and with automatic monitoring device conventional in lubricating oil processing well known to those skilled in the art, the present invention is preferably on-the-spot PLC sequence controller.
The set(ting)value that inlet outlet pressure differential of the present invention reaches is preferably greater than and equals 0.05MPa, is more preferably 0.06 ~ 0.17MPa, is more preferably 0.08 ~ 0.12MPa, most preferably is 0.10MPa; The present invention is not particularly limited described second charge filter, with the strainer filtered for stock oil well known to those skilled in the art, the present invention is for improving filter effect and backwash effect, preferably the second charge filter adopts 316L Stainless Steel Cloth filter core, and by treatment capacity, choose suitable filtration area to ensure best surface velocity, effectively solid impurity to be trapped in the outside surface of filter core, form loose and equally distributed filter cake, contribute to follow-up gas auxiliary liq and carry out blowback removal.The present invention is not particularly limited follow-up lube oil hydrogenation process, with HDF of lubricating oil well known to those skilled in the art.
Blowback medium is passed into the first charge filter and purges by the present invention again, then back flushing medium is passed into the first charge filter brews, and obtains the first charge filter after back flushing, the first charge filter namely after cleaning; Described blowback medium is preferably nitrogen and/or rare gas element, is more preferably nitrogen; Described back flushing medium is preferably diesel oil and/or white oil, is more preferably white oil, most preferably is 10# white oil.
The present invention is regeneration effect and the filter effect of raising first charge filter, preferably blowback medium is passed into the first charge filter and purges, then back flushing medium is passed into the first charge filter brews, and obtains the first charge filter after brewing; Then the first charge filter after above-mentioned brewing is passed into again after blowback medium purges, obtain the first charge filter after clearing up.The concrete mode of the present invention to described purging is not particularly limited, with strainer Purge methods well known to those skilled in the art; The source of the present invention to described blowback medium is not particularly limited, and originates with nitrogen well known to those skilled in the art or rare gas element.The present invention is not particularly limited the described concrete mode brewed, and brews mode with strainer well known to those skilled in the art; The source of the present invention to described back flushing medium is not particularly limited, with the source of diesel oil well known to those skilled in the art or white oil.
The purging amount of the present invention to blowback medium is not particularly limited, those skilled in the art can regulate voluntarily according to conditions such as practical condition, lube product requirement and strainers, when the present invention is preferably and day produces 300 ~ 1000 tons of lubricating oil, purging amount is preferably once a day, 5 ~ 9m
3/ time, be more preferably 6 ~ 8m
3/ time, most preferably be 7m
3/ time.The brew amount of the present invention to back flushing medium is not particularly limited, those skilled in the art can regulate voluntarily according to conditions such as practical condition, lube product requirement and strainers, when the present invention is preferably and day produces 300 ~ 700 tons of lubricating oil, purging amount is preferably weekly, 0.7 ~ 1.1m
3/ time, be more preferably 0.8 ~ 1.0m
3/ time, most preferably be 0.9m
3/ time.
The present invention obtains the first charge filter after back flushing through above-mentioned steps, namely the first charge filter after cleaning, place for subsequent use, after the second charge filter inlet outlet pressure differential reaches set(ting)value, after stock oil being switched to the first charge filter filtration after above-mentioned cleaning, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.The present invention purges described second charge filter and brews after stock oil being switched to the first charge filter filtration after above-mentioned cleaning; The present invention is identical with the mode brewed with the purging of described first charge filter with optimum condition with the mode brewed to the purging of above-mentioned second charge filter, then this repeats no longer one by one.
The present invention is the regeneration effect and the filter effect that improve charge filter, extend the work-ing life of charge filter, preferably when first charge filter of stock oil after above-mentioned cleaning filters, when the initial inlet outlet pressure differential of the first charge filter after described cleaning reaches the second set(ting)value, stock oil is switched to the second charge filter after cleaning, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil; Then blowback steam is passed into the first charge filter to purge, then blowback medium is passed into the first charge filter carry out drying purge after, obtain regenerate after the first charge filter; Last after the second charge filter inlet outlet pressure differential reaches set(ting)value, after stock oil being switched to the first charge filter after above-mentioned regeneration, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.
Described second set(ting)value is preferably greater than and equals 0.05MPa, is more preferably and is more than or equal to 0.08MPa, be more preferably 0.08 ~ 0.15MPa, most preferably be 0.1 ~ 0.12MPa; Described blowback medium is preferably nitrogen and/or rare gas element, is more preferably nitrogen; The concrete mode of the present invention to described steaming out is not particularly limited, with strainer Purge methods well known to those skilled in the art; The source of the present invention to described steam is not particularly limited, with the source of steam well known to those skilled in the art.The present invention is not particularly limited the concrete mode that described drying purges, with the dry Purge methods of strainer well known to those skilled in the art; The source of the present invention to described blowback medium is not particularly limited, and originates with nitrogen well known to those skilled in the art or rare gas element.
The present invention is the quality product improving lubricant base further, also preferred using charging backwash filter SR-101A/B as heavy lubricant base stock finished filter, is furnished with Filter Back Washing technique of the present invention, thus to eliminate further when this product goes out device may with impurity, particle etc., avoid the generation of product quality accident, product filtering accuracy is 25 μm (>=25 μm of particle removal rate ≮ 98% (wt)).
Charge filter backwash technique provided by the invention, the smooth running of producing when ensure that switch filtering device.Solve existing fixed differential strainer and manual backwashing filter device back flushing frequency high while, reduce manually rinse time to the person, backwash filter filter core, High pressure feeding pump assembly, reactor bed pressure drop and the negative impact in catalyst activity, life-span etc.Build the pressure because operating the tank field raw oil pump that may bring not in time when eliminating artificial manual backwashing, even device charging is forced to interrupt and emergency shutdown equivalent risk; Efficiently avoid the unnecessary waste producing too much sump oil and used steaminess or nitrogen to cause.The setting fixed cycle leads to the mode that diesel oil soaks filter core, abundant removal is attached to the pollutent of cartridge surface, ensure that better cleaning performance, can remove preferably in stock oil charging containing condensed-nuclei aromatics, wax and iron rust and impurity etc., and the work of long-term stability, has longer work-ing life.
Present invention also offers the charge filter back-purge system in a kind of lube oil hydrogenation process, comprise stock oil feeding line, filter rear material oil outlet pipeline, charge filter group, blowback medium intake pipeline, back flushing medium intake pipeline and sump oil outlet line;
Described charge filter group comprises the first charge filter and the second charge filter that are arranged in parallel;
Described stock oil feeding line is connected with the material inlet of described charge filter group; After described filter, material oil outlet pipeline is connected with the material outlet of described charge filter group;
Described blowback medium intake pipeline is connected with the purging import of described charge filter group; Described back flushing medium intake pipeline is connected with the flushing import of described charge filter group respectively;
Described sump oil outlet line exports with the purging of described charge filter group respectively and is connected; Described sump oil outlet line exports with the flushing of described charge filter group respectively and is connected.
When preferred feedstock filter set of the present invention is only by the first charge filter be arranged in parallel and the second charge filter, described stock oil feeding line is connected with the material inlet of described second charge filter with the material inlet of described first charge filter respectively; After described filter, material oil outlet pipeline is connected with the material outlet of described second charge filter with the material outlet of described first charge filter respectively;
Described blowback medium intake pipeline is connected with the purging import of described second charge filter with the purging import of described first charge filter respectively; Described back flushing medium intake pipeline is connected with the flushing import of described second charge filter with the flushing import of described first charge filter respectively;
Described sump oil outlet line exports with the purging of described first charge filter respectively to export with the purging of described second charge filter and is connected; Described sump oil outlet line exports with the flushing of described first charge filter respectively to export with the flushing of described second charge filter and is connected.
In order to improve regeneration effect and the filter effect of charge filter, extend the work-ing life of charge filter, stock oil after the charge filter that above-mentioned backwash technique is regenerated, is reduced the impact of impurity on subsequent production technique, improves the quality product of lubricating oil by the present invention.See the charge filter back-purge system schematic diagram that Fig. 1, Fig. 1 are in lube oil hydrogenation process of the present invention.
The present invention is not particularly limited described first and second charge filter, with the strainer filtered for stock oil well known to those skilled in the art, the present invention is for improving filter effect and backwash effect, preferably the first and second charge filter adopt 316L Stainless Steel Cloth filter core, and by treatment capacity, choose suitable filtration area to ensure best surface velocity, effectively solid impurity to be trapped in the outside surface of filter core, form loose and equally distributed filter cake, contribute to follow-up gas auxiliary liq and carry out blowback removal.The present invention is not particularly limited follow-up lube oil hydrogenation process, with HDF of lubricating oil well known to those skilled in the art.
Processing condition in charge filter back-purge system in lube oil hydrogenation process of the present invention are identical with above-mentioned treatment process parameter with processing parameter, repeat no longer one by one below.The present invention is not particularly limited the on-the-spot logic control components and parts of pipeline, valve and correspondence in the charge filter back-purge system in described lube oil hydrogenation process, the specification commonly used with those skilled in the art and model.
Charge filter back-purge system provided by the invention, can remove preferably in stock oil charging containing condensed-nuclei aromatics, wax and iron rust and impurity etc., and the work of long-term stability, there is longer work-ing life, and it is simple to operate, especially auto-changeover control program, production status before comparing, without the need to every 8 hours artificial manual backwashings once, without the need to all needing the cleaning of recoil washing oil at every turn, about 0.5t sump oil amount can be reduced discharging every day, and there is all hidden danger or drawback another aspect in manual backwashing, with the continuous operation of device, equipment, pipeline, APPENDIX MATERIALSThe etc. can be constantly aging, corrosion, get rusty, coking etc., add construction quality, break-down maintenance and the purging that goes into operation, the factors such as oil fortune, personage controls not get rid of iron rust, welding slag, aging or corrosion material and other impurity etc. are deposited in the possibility of VACUUM TOWER BOTTOM, and then affect the quality product of major product heavy lubricant base stock.Experimental result shows, when processing identical day output lubricating oil, charge filter backwash technique provided by the invention compares original process system with back-purge system, and the consumption of blowback medium saves 94%, and the consumption of back flushing medium saves 97%, in addition, owing to reducing foreign matter content in stock oil, particularly micro-metallic impurity significantly reduce, and catalyst activity is improved, extend its work-ing life, improve lube product quality.
In order to understand the present invention further, be described in detail to lube oil feedstocks Filter Back Washing technique provided by the invention and back-purge system below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Produce 82# lubricating oil, day output 712 tons
Stock oil is come by stock oil tank field, 1.0Mpa is boosted to through pump, the first charge filter is entered through pipeline, be 110 DEG C and filter inlet pressure in temperature be 0.85MPa, top hole pressure is under the condition of 0.84MPa, after the first charge filter filters, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.
Above-mentioned steps operates continuously, and when the first charge filter top hole pressure is 0.75MPa, automatic control program switches stock oil and filters via the second charge filter, then enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil.
After above-mentioned switch step, automatic control system opens blowback medium scavenging line, and nitrogen is passed into the first charge filter via scavenging line and purges, purge time is 5min, and purging nitrogen consumption is 7m
3/ time.The frequency that first charge filter carries out above-mentioned purging is generally 24 hours and purges 1 time.
Through the first charge filter of above-mentioned purge step, automatically enter dormant state.After the second charge filter inlet outlet pressure differential reaches 0.05MPa, automatic control system enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil after stock oil being automatically switched to the first charge filter filtration after above-mentioned cleaning.Stand-by after purging being carried out to the second charge filter with same purge step again.
First charge filter and the second charge filter, as shown in above-mentioned steps, recycle successively and clear up.
In above-mentioned continuous circulation use and scale removal process, usual production 82# lubricating oil week age, need to brew charge filter, after the first charge filter being purged with the nitrogen in above-mentioned steps, automatic control system automatically by back flushing with 10# white oil by tank station, pass into the first charge filter via line of pipes and brew, the pressure brewed is 0.8MPa, brewing time is 5min, and brewing white oil consumption used is 0.9m
3/ time, and then the first charge filter after above-mentioned brewing is passed into again after nitrogen purges, stand-by after finally obtaining the first charge filter after back flushing.
After stock oil automatically switches to the first charge filter, stand-by after again back flushing being carried out to the second charge filter with above-mentioned steps.
Continue the continuous processing of above-mentioned production 82# lubricating oil, when first charge filter of stock oil after above-mentioned cleaning filters, and the initial inlet outlet pressure differential of the first charge filter after above-mentioned cleaning is when reaching 0.1MPa, stock oil is switched to the second charge filter after cleaning, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil;
Then automatic control system opens steam input pipe line, and high-temperature steam is passed into the first charge filter via steam input pipe line and carries out steaming out, steaming out pressure is 0.8MPa, and purge time is 5min, and the consumption of high-temperature steam is 5m
3/ time; Automatic control system opens blowback medium scavenging line again, and nitrogen is passed into the first charge filter via scavenging line and carries out drying purging, nitrogen purging pressure is 0.8MPa, and purge time is 5min, and the consumption of nitrogen is 0.9m
3/ time, stand-by after obtaining the first charge filter after regenerating after dry purging.
In process of production as after the second charge filter inlet outlet pressure differential reaches set(ting)value, after stock oil is switched to the first charge filter by Controlling System automatically, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil; Meanwhile, as shown in above-mentioned regeneration step, manipulation of regeneration is carried out to the second charge filter, stand-by after obtaining the second charge filter after regenerating.
Elapsed time is 1 month, ultimate production is about the continuous running of the lube oil hydrogenation system of 21700t lubricating oil, monitoring result is see table 1, and table 1 is that the lube oil feedstocks Filter Back Washing technique of the embodiment of the present invention 1 and the consumption indicators of back-purge system and original technique contrast.
The consumption indicators of the lube oil feedstocks Filter Back Washing technique of table 1 embodiment of the present invention 1 and back-purge system and original technique contrasts
As shown in Table 1, the present invention's above-mentioned lube oil feedstocks Filter Back Washing technique and back-purge system, compare original technique, and the consumption of nitrogen saves 94%, and the consumption of back flushing lightweight oil saves 97%.
The hydro-treated lube base oil that said process obtains is detected, 82# oil viscosity is not less than 100, colourity is not less than 30, pour point is not more than-15, mechanical impurity, compare the 82# oil that original HDF of lubricating oil is produced, its viscosity for being not less than 82, colourity for being not less than 27, pour point for being not more than-11, mechanical impurity.As can be seen from the detection data of above-mentioned finished lube, charge filter backwash technique provided by the invention and back-purge system, can remove preferably in stock oil charging containing condensed-nuclei aromatics, wax and iron rust and impurity etc., eliminate all hidden danger or the drawback of pure artificial manual backwashing, reduce existing developing technique to backwash filter filter core, High pressure feeding pump assembly, reactor bed pressure drop and catalyst activity, the negative impact in life-span etc., when processing identical day output lubricating oil, reduce foreign matter content in stock oil, improve lube product quality.
Embodiment 2
Produce 10# lubricating oil, day output 789 tons
Stock oil is come by stock oil tank field, 1.0Mpa is boosted to through pump, the first charge filter is entered through pipeline, be 110 DEG C and filter inlet pressure in temperature be 0.85MPa, top hole pressure is under the condition of 0.84MPa, after the first charge filter filters, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.
Above-mentioned steps operates continuously, and when the first charge filter top hole pressure is 0.65MPa, automatic control program switches stock oil and filters via the second charge filter, then enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil.
After above-mentioned switch step, automatic control system opens blowback medium scavenging line, and nitrogen is passed into the first charge filter via scavenging line and purges, purge time is 4.0min, and purging nitrogen consumption is 5m
3/ time.The frequency that first charge filter carries out above-mentioned purging is generally 24 hours and purges 1 time.
Through the first charge filter of above-mentioned purge step, automatically enter dormant state.After the second charge filter inlet outlet pressure differential reaches 0.04MPa, automatic control system enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil after stock oil being automatically switched to the first charge filter filtration after above-mentioned cleaning.Stand-by after purging being carried out to the second charge filter with same purge step again.
First charge filter and the second charge filter, as shown in above-mentioned steps, recycle successively and clear up.
In above-mentioned continuous circulation use and scale removal process, usual production 10# lubricating oil week age, need to brew charge filter, after the first charge filter being purged with the nitrogen in above-mentioned steps, automatic control system automatically by back flushing with 10# white oil by tank station, pass into the first charge filter via line of pipes and rinse, the pressure of flushing is 0.70MPa, flush time is 4.0min, and rinsing white oil consumption used is 0.8m
3/ time, and then the first charge filter after above-mentioned brewing is passed into again after nitrogen purges, stand-by after finally obtaining the first charge filter after back flushing.
After stock oil automatically switches to the first charge filter, stand-by after again back flushing being carried out to the second charge filter with above-mentioned steps.
Continue the continuous processing of above-mentioned production 10# lubricating oil, when first charge filter of stock oil after above-mentioned cleaning filters, and the initial inlet outlet pressure differential of the first charge filter after above-mentioned cleaning is when reaching 0.085MPa, stock oil is switched to the second charge filter after cleaning, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil;
Then automatic control system opens steam input pipe line, and high-temperature steam is passed into the first charge filter via steam input pipe line and carries out steaming out, steaming out pressure is 0.75MPa, and purge time is 4.0min, and the consumption of high-temperature steam is 4.0m
3/ time; Automatic control system opens blowback medium scavenging line again, and nitrogen is passed into the first charge filter via scavenging line and carries out drying purging, nitrogen purging pressure is 0.75MPa, and purge time is 4min, and the consumption of nitrogen is 0.8m
3/ time, stand-by after obtaining the first charge filter after regenerating after dry purging.
In process of production as after the second charge filter inlet outlet pressure differential reaches set(ting)value, after stock oil is switched to the first charge filter by Controlling System automatically, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil; Meanwhile, as shown in above-mentioned regeneration step, manipulation of regeneration is carried out to the second charge filter, stand-by after obtaining the second charge filter after regenerating.
Elapsed time is 1 month, ultimate production is about the continuous running of the lube oil hydrogenation system of 21850t lubricating oil, monitoring result is see table 2, and table 2 is that the lube oil feedstocks Filter Back Washing technique of the embodiment of the present invention 2 and the consumption indicators of back-purge system and original technique contrast.
The consumption indicators of the lube oil feedstocks Filter Back Washing technique of table 2 embodiment of the present invention 2 and back-purge system and original technique contrasts
The hydro-treated lube base oil that said process obtains is detected, 10# oil viscosity is not less than 12, colourity is not less than 30, pour point is not more than-28, mechanical impurity, compare the 10# oil that original HDF of lubricating oil is produced, its viscosity for being not less than 10, colourity for being not less than 28, pour point for being not more than-25, mechanical impurity.
Embodiment 3
Produce 32# lubricating oil, day output 811 tons
Stock oil is come by stock oil tank field, 1.0Mpa is boosted to through pump, the first charge filter is entered through pipeline, be 110 DEG C and filter inlet pressure in temperature be 0.85MPa, top hole pressure is under the condition of 0.84MPa, after the first charge filter filters, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil.
Above-mentioned steps operates continuously, and when the first charge filter top hole pressure is 0.70MPa, automatic control program switches stock oil and filters via the second charge filter, then enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil.
After above-mentioned switch step, automatic control system opens blowback medium scavenging line, and nitrogen is passed into the first charge filter via scavenging line and purges, purge time is 4.5min, and purging nitrogen consumption is 6.5m
3/ time.The frequency that first charge filter carries out above-mentioned purging is generally 24 hours and purges 1 time.
Through the first charge filter of above-mentioned purge step, automatically enter dormant state.After the second charge filter inlet outlet pressure differential reaches 0.045MPa, automatic control system enters follow-up lube oil hydrogenation process, obtains hydro-treated lube base oil after stock oil being automatically switched to the first charge filter filtration after above-mentioned cleaning.Stand-by after purging being carried out to the second charge filter with same purge step again.
First charge filter and the second charge filter, as shown in above-mentioned steps, recycle successively and clear up.
In above-mentioned continuous circulation use and scale removal process, usual production 32# lubricating oil week age, need to brew charge filter, after the first charge filter being purged with the nitrogen in above-mentioned steps, automatic control system automatically by back flushing with 10# white oil by tank station, pass into the first charge filter via line of pipes and brew, the pressure of flushing is 0.75MPa, flush time is 4.5min, and rinsing white oil consumption used is 0.86m
3/ time, and then the first charge filter after above-mentioned brewing is passed into again after nitrogen purges, stand-by after finally obtaining the first charge filter after back flushing.
After stock oil automatically switches to the first charge filter, stand-by after again back flushing being carried out to the second charge filter with above-mentioned steps.
Continue the continuous processing of above-mentioned production 32# lubricating oil, when first charge filter of stock oil after above-mentioned cleaning filters, and the initial inlet outlet pressure differential of the first charge filter after above-mentioned cleaning is when reaching 0.09MPa, stock oil is switched to the second charge filter after cleaning, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil;
Then automatic control system opens steam input pipe line, and high-temperature steam is passed into the first charge filter via steam input pipe line and carries out steaming out, steaming out pressure is 0.78MPa, and purge time is 4.5min, and the consumption of high-temperature steam is 4.5m
3/ time; Automatic control system opens blowback medium scavenging line again, and nitrogen is passed into the first charge filter via scavenging line and carries out drying purging, nitrogen purging pressure is 0.78MPa, and purge time is 4.5min, and the consumption of nitrogen is 0.86m
3/ time, stand-by after obtaining the first charge filter after regenerating after dry purging.
In process of production as after the second charge filter inlet outlet pressure differential reaches set(ting)value, after stock oil is switched to the first charge filter by Controlling System automatically, enter follow-up lube oil hydrogenation process, obtain hydro-treated lube base oil; Meanwhile, as shown in above-mentioned regeneration step, manipulation of regeneration is carried out to the second charge filter, stand-by after obtaining the second charge filter after regenerating.
Elapsed time is 1 month, ultimate production is about the continuous running of the lube oil hydrogenation system of 22050t lubricating oil, monitoring result is see table 3, and table 3 is that the lube oil feedstocks Filter Back Washing technique of the embodiment of the present invention 3 and the consumption indicators of back-purge system and original technique contrast.
The consumption indicators of the lube oil feedstocks Filter Back Washing technique of table 3 embodiment of the present invention 3 and back-purge system and original technique contrasts
The hydro-treated lube base oil that said process obtains is detected, 32# oil viscosity is not less than 35, colourity is not less than 30, pour point is not more than-25, mechanical impurity, compare the 32# oil that original HDF of lubricating oil is produced, its viscosity for being not less than 32, colourity for being not less than 27, pour point for being not more than-23, mechanical impurity.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the charge filter backwash technique in lube oil hydrogenation process, comprises the following steps:
A) stock oil is filtered through the first charge filter, after the first charge filter inlet outlet pressure differential reaches set(ting)value, switch stock oil and filter through the second charge filter;
B) blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after clearing up;
C) after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned cleaning and filter.
2. charge filter backwash technique according to claim 1, is characterized in that, described in switch to automatic switchover.
3. charge filter backwash technique according to claim 1, is characterized in that, described set(ting)value is for being more than or equal to 0.05MPa.
4. charge filter backwash technique according to claim 1, is characterized in that, described set(ting)value is 0.05 ~ 0.2MPa.
5. charge filter backwash technique according to claim 1, is characterized in that, described blowback medium is nitrogen and/or rare gas element; Described back flushing medium is diesel oil and/or white oil.
6. charge filter backwash technique according to claim 1, is characterized in that, described step b) be specially:
B1) blowback medium is passed into the first charge filter to purge, then back flushing medium is passed into the first charge filter brew, obtain the first charge filter after brewing;
B2) the first charge filter after above-mentioned brewing is passed into again after blowback medium purges, obtain the first charge filter after back flushing.
7. charge filter backwash technique according to claim 1, is characterized in that, described step c) after, also comprise,
D) blowback medium is passed into the second charge filter to purge, then back flushing medium is passed into the second charge filter brew, obtain the second charge filter after clearing up;
When e) being filtered by first charge filter of stock oil after described cleaning, when the initial inlet outlet pressure differential of the first charge filter after described cleaning reaches the second set(ting)value, stock oil is switched to the second charge filter after above-mentioned cleaning;
F) blowback steam is passed into the first charge filter to purge, then blowback medium is passed into the first charge filter carry out drying purge after, obtain regenerate after the first charge filter;
G) after the second charge filter inlet outlet pressure differential reaches set(ting)value, stock oil is switched to the first charge filter after above-mentioned regeneration.
8. charge filter backwash technique according to claim 7, is characterized in that, described second set(ting)value is for being more than or equal to 0.05MPa.
9. the charge filter back-purge system in lube oil hydrogenation process, comprises stock oil feeding line, filter rear material oil outlet pipeline, charge filter group, blowback medium intake pipeline, back flushing medium intake pipeline and sump oil outlet line;
Described charge filter group comprises the first charge filter and the second charge filter that are arranged in parallel;
Described stock oil feeding line is connected with the material inlet of described charge filter group; After described filter, material oil outlet pipeline is connected with the material outlet of described charge filter group;
Described blowback medium intake pipeline is connected with the purging import of described charge filter group; Described back flushing medium intake pipeline is connected with the flushing import of described charge filter group respectively;
Described sump oil outlet line exports with the purging of described charge filter group respectively and is connected; Described sump oil outlet line exports with the flushing of described charge filter group respectively and is connected.
10. charge filter back-purge system according to claim 9, is characterized in that, described back-purge system also comprises steam input pipe line; Described steam input pipe line exports with the purging of described charge filter group respectively and is connected.
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| CN106733878A (en) * | 2016-12-29 | 2017-05-31 | 桐乡市中维化纤有限公司 | The cleaning method of finishing oil pump intelligence cleaning device and finishing oil pump |
| CN107648929A (en) * | 2017-09-30 | 2018-02-02 | 东莞安默琳机械制造技术有限公司 | Reclaim the filtration system of lubricating oil |
| CN109382043A (en) * | 2017-08-07 | 2019-02-26 | 神华集团有限责任公司 | The in situ regeneration method of Fischer-Tropsch synthesis device filter element and the F- T synthesis system of application in situ regeneration method |
| CN110129093A (en) * | 2019-05-21 | 2019-08-16 | 山东京博石油化工有限公司 | A kind of pre-hydrotreating reaction system |
| CN111534322A (en) * | 2020-04-21 | 2020-08-14 | 安泰科技股份有限公司 | Purification device and purification method for raw materials for producing needle coke |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106733878A (en) * | 2016-12-29 | 2017-05-31 | 桐乡市中维化纤有限公司 | The cleaning method of finishing oil pump intelligence cleaning device and finishing oil pump |
| CN109382043A (en) * | 2017-08-07 | 2019-02-26 | 神华集团有限责任公司 | The in situ regeneration method of Fischer-Tropsch synthesis device filter element and the F- T synthesis system of application in situ regeneration method |
| CN107648929A (en) * | 2017-09-30 | 2018-02-02 | 东莞安默琳机械制造技术有限公司 | Reclaim the filtration system of lubricating oil |
| CN110129093A (en) * | 2019-05-21 | 2019-08-16 | 山东京博石油化工有限公司 | A kind of pre-hydrotreating reaction system |
| CN111534322A (en) * | 2020-04-21 | 2020-08-14 | 安泰科技股份有限公司 | Purification device and purification method for raw materials for producing needle coke |
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| CN105038846B (en) | 2017-06-27 |
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