CN101914407B - Circulating pump sealing oil and application thereof - Google Patents
Circulating pump sealing oil and application thereof Download PDFInfo
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Abstract
The invention relates to a circulating pump sealing oil and application thereof. The circulating pump sealing oil comprises base oil and low-density blend oil, wherein the base oil is selected from at least one of hydrogenated coal-liquefaction solvent oil, hydrogenated heavy aromatic hydrocarbon oil and hydrogenated anthracene oil. The invention also relates to application of the circulating pump sealing oil for sealing pumps in the processes of making oil from coal and refining petroleum. The sealing oil in the invention has the advantages of simple production process, low processing cost, excellent quality and low production cost.
Description
Technical field
The present invention relates to circulating pump sealing oil and uses thereof.
Background technology
In the coal oil-producing technique, need to use the reactor cycles pump, FLOWSERVE reactor cycles pump for example, and the reactor cycles pump is the canned-motor pump of working conditions harshness.The used sealing oil of this pump has high requirements to moisture, dielectric strength, viscosity, density, cleanliness factor etc.External similar pump mainly is used in heavy-oil hydrogenation and makes with extra care, and its hydrofining quality product is better, all adopts this to install the rear sealing oil as recycle pump of self-produced oil product cutting.
Because the sealing oil consumption is large, finally be blended in the main process-stream, recoverable not, various countries all adopt this to install self-produced oil product exploitation sealing oil, to reduce cost.What the T-star device recycle pump of Poland used is the canned-motor pump that Flowserve produces, and sealing oil is the heavy distillate that device oneself is produced.What the gelatin liquefaction recycle pump of the Shanghai research institute PDU of China Shenhua Coal to Liquid and Chemical Co., Ltd. device used is the canned-motor pump of Japan's day machine dress production, this pump can be used for slurry transportation, less demanding to sealing oil, adopt the high-temperature solvent oil of stabilized hydrogenation device production as sealing oil.Because liquefied coal coil is rich in aromatic hydrocarbons and trace solid material, oil quality characteristic is difficult to satisfy the sealing oil requirement.Therefore, the sealing oil of using at present in the coal oil-producing technique is to develop as carrier with lubricant base, and this product price is comparatively expensive, and consumption is large, makes process costs very high.
Therefore, need the cheap sealing oil of development cost, substitute the outsourcing sealing oil, can further improve direct coal liquefaction process, reduce running cost.
Summary of the invention
The present invention adopts coal liquefaction solvent oil, heavy aromatics is oily or carbolineum is the basis, produces to meet the sealing oil that the reactor cycles pump uses.
Circulating pump sealing oil comprises:
A) base oil, base oil are selected from behind the hydrogenation behind coal liquefaction solvent oil, the hydrogenation behind heavy aromatics oil, the hydrogenation at least a in the carbolineum;
B) low density mixed oil.
Preferably, behind the hydrogenation coal liquefaction solvent oil from coal liquefaction craft or DCL/Direct coal liquefaction device.
Preferably, b) the low density mixed oil is selected from least a in hydrogenation tail oil, hydrogenation wax oil, hydrogenation lubricating oil, the hydrogenation heavy distillate, preferred hydrogenation tail oil.
Preferably, a) base oil is at least a in the heavy aromatics oil behind coal liquefaction solvent oil and the hydrogenation behind the hydrogenation, heavy aromatics oil behind coal liquefaction solvent oil or the hydrogenation behind the preferred hydrogenation, and most preferably heavy aromatics is oily behind the hydrogenation; B) the low density mixed oil is hydrogenation tail oil.
Preferably, a) base oil and b) proportioning of low density mixed oil is 3: 7～7: 3 by weight, preferred 3.5: 6.5～6.5: 3.5, more preferably 4: 6～6: 4, most preferably 4.5: 5.5～5.5: 4.5.
Preferably, the boiling range of circulating pump sealing oil is at 250～480 ℃, and preferred 260～470 ℃, more preferably 265～470 ℃, most preferably 270～470 ℃.
Preferably, the API gravity of circulating pump sealing oil is 20～40, and is preferred 22～38, and more preferably 24～36, most preferably 25～35.
Preferably, the pour point of circulating pump sealing oil preferably less than 26 ℃, is more preferably less than 23 ℃, most preferably less than 21 ℃ less than 28 ℃.
Preferably, the insulation strength of circulating pump sealing oil is preferably greater than 18000V greater than 15000V, more preferably greater than 20000V, most preferably greater than 25000V.
Preferably, the viscosity 135～165sus of circulating pump sealing oil under 37.8 ℃, preferred 145～165sus, more preferably 150～165sus, most preferably 155～160sus.
Preferably, the viscosity 38～50sus of circulating pump sealing oil under 93.3 ℃, preferred 38～45sus, more preferably 38～42sus, most preferably 40～42sus.
Preferably, the sulphur content of circulating pump sealing oil preferably less than 0.35%, is more preferably less than 0.3%, most preferably less than 0.2% by weight less than 0.4%.
Preferably, the copper strip test of circulating pump sealing oil reaches the 1a standard of GB/T5096.
Preferably, the water content of circulating pump sealing oil is by weight less than or equal to 70ppm, preferably less than or equal to 50ppm, is more preferably less than and equals 30ppm, most preferably less than or equal to 20ppm.
Preferably, the mechanical impurity of circulating pump sealing oil by weight≤0.1%, preferred≤0.05, more preferably≤0.02, most preferably≤0.01.
Preferably, the flash-point of circulating pump sealing oil 〉=150 ℃, preferred 〉=170 ℃, more preferably 〉=180 ℃, most preferably 〉=200 ℃, also most preferably 〉=220 ℃.
The above-mentioned circulating pump sealing oil purposes for sheathed pump in coal liquefaction and petroleum refining process that also relates to of the present invention.
Preferably, pump is the recycle pump for suspension bed, ebullated bed.
The sealing oil complex process of producing take lubricating oil as base oil, use cost is high, and sealing oil production process of the present invention is simple and direct, and low processing cost, superior in quality, reduced production cost.
Description of drawings
Fig. 1 is the hydrogenation of one embodiment of the present invention and the process flow sheet of fractionation.
Fig. 2 is the process flow sheet of the tank field of one embodiment of the present invention.
Embodiment
The present invention unexpectedly finds, adopts coal liquefaction solvent oil as basic components, adds suitable low density mixed oil, can obtain qualified sealing oil.
Employed term " tail oil " or " hydrogenation tail oil " refer to hydrocracking tail oil in the petroleum refining process among the present invention, and namely uncracked stable hydrocarbon in the hydrocracking process is one of byproduct of hydrogenation crude cracking, is called again " unconverted oil ".
Employed term among the present invention " coal liquefaction solvent oil " refers to the hydrogen supply dissolvent oil in the direct coal liquefaction process process.
Employed term " base oil " or " base oil behind the hydrogenation " refer to the base oil of feed of base oil after hydrotreatment among the present invention; Term " feed of base oil " refers to the base oil without hydrotreatment.
One aspect of the present invention relates to circulating pump sealing oil, comprising:
A) base oil, base oil are selected from behind the hydrogenation behind coal liquefaction solvent oil, the hydrogenation behind heavy aromatics oil, the hydrogenation at least a in the carbolineum;
B) low density mixed oil.
Preferably, sealing oil of the present invention is by a) base oil and b) the low density mixed oil consists of.
Sealing oil of the present invention also can comprise other compositions, for example additive.If suitable, after also can mixing with other sealing oil that meets the recycle pump requirement, sealing oil of the present invention uses.
Preferably, the low density mixed oil is selected from least a in hydrogenation tail oil, hydrogenation wax oil, hydrogenation lubricating oil, the hydrogenation heavy distillate, preferred hydrogenation tail oil.
Preferably, a) base oil can be selected from from coal liquefaction solvent oil behind the hydrogenation of coal liquefaction craft, at least a from the carbolineum behind heavy aromatics oil, the hydrogenation behind coal liquefaction solvent oil, the hydrogenation behind the hydrogenation of DCL/Direct coal liquefaction device, preferably from coal liquefaction solvent oil behind the hydrogenation of coal liquefaction craft or DCL/Direct coal liquefaction device.
Coal liquefaction solvent oil is the coal liquefaction solvent oil in DCL/Direct coal liquefaction product or the coal liquefaction craft preferably.
A kind of preferred embodiment in, a) base oil is at least a in the heavy aromatics oil behind coal liquefaction solvent oil and the hydrogenation behind the hydrogenation, heavy aromatics oil behind coal liquefaction solvent oil or the hydrogenation behind the preferred hydrogenation, most preferably heavy aromatics is oily behind the hydrogenation; B) the low density mixed oil is hydrogenation tail oil.
Preferably, a) proportioning of base oil and low density mixed oil is by weight at 3: 7～7: 3, and preferred 3.5: 6.5～6.5: 3.5, more preferably 4: 6～6: 4, most preferably 4.5: 5.5～5.5: 4.5.
Preferably, low density mixed oil density is at 0.78～0.85g/cm
3, preferred 0.79～0.83g/cm
3, more preferably 0.79～0.82g/cm
3, 0.79～0.81g/cm most preferably
3
Preferably, low density be in harmonious proportion oil viscosity 30～50, preferred 32～48, more preferably 35～45, most preferably 40～45 (measuring according to GB/T265).
Preferably, the API gravity of sealing oil of the present invention is 20～40, and is preferred 22～38, and more preferably 24～36, most preferably 25～35.
Preferably, the pour point of sealing oil of the present invention preferably less than 26 ℃, is more preferably less than 23 ℃, most preferably less than 21 ℃ less than 28 ℃.
Preferably, the insulation strength of sealing oil of the present invention (pressing ASTM) is preferably greater than 18000V greater than 15000V, more preferably greater than 20000V, most preferably greater than 25000V.
Preferably, the viscosity 135～165sus of sealing oil of the present invention under 37.8 ℃ (100 °F), preferred 145～165sus, more preferably 150～165sus, most preferably 155～160sus.
Preferably, the viscosity 38～50sus of sealing oil of the present invention under 93.3 ℃ (200 °F), preferred 38～45sus, more preferably 38～42sus, most preferably 40～42sus.
Preferably, the sulphur content of sealing oil of the present invention preferably less than 0.35%, is more preferably less than 0.3%, most preferably less than 0.2% by weight less than 0.4%.
Preferably, the copper strip test of sealing oil of the present invention reaches the 1a standard of GB/T5096.
Preferably, the water content of sealing oil of the present invention is by weight less than or equal to 70ppm, preferably less than or equal to 50ppm, is more preferably less than and equals 30ppm, most preferably less than or equal to 20ppm.
Preferably, the mechanical impurity of sealing oil of the present invention by weight≤0.1%, preferred≤0.05, more preferably≤0.02, most preferably≤0.01.
Preferably, sealing oil flash of the present invention 〉=150 ℃, preferred 〉=170 ℃, more preferably 〉=180 ℃, most preferably 〉=200 ℃, also most preferably 〉=220 ℃.
Another aspect of the present invention relates to the preparation method of above-mentioned sealing oil, comprising:
S1) feed of base oil is carried out hydrotreatment, obtain base oil behind the hydrogenation; Optionally the low density mixed oil is carried out hydrotreatment;
S2) base oil behind low density mixed oil and the hydrogenation is carried out fractionation, remove light constituent and moisture content, obtain containing the sealing oil of base oil and low density mixed oil behind the hydrogenation;
Wherein, feed of base oil is selected from least a in coal liquefaction solvent oil, heavy aromatics oil, the carbolineum.
Preferably, S1) carry out one of in the following manner hydrogenation:
Mode 1: with a) feed of base oil and b) the low density mixed oil mixes, then a) feed of base oil and b) mixture of low density mixed oil carries out hydrotreatment; Perhaps
Mode 2: a) feed of base oil is carried out hydrotreatment, then with a) base oil and b behind the hydrogenation) the low density mixed oil mixes.
Hydrotreatment not only can make oil product stable, can also remove assorted element impurity.The assorted element impurity of removing can be sulfur-containing impurities, nitrogenous impurity, oxygenate impurity.
As b) when the low density mixed oil itself is product (for example hydrogenation tail oil) behind the hydrogenation, can be only a) feed of base oil be carried out hydrogenation (being mode 2), then with a) base oil and b) mixture of low density mixed oil carries out fractionation.
At step S2) in, both can be with a) base oil with b) the mixture fractionation of low density mixed oil, also can be with a) base oil and b) the respectively fractionation of low density mixed oil, then mix by proportioning.Consider cost, preferably with a) base oil and b) mixture of low density mixed oil carries out fractionation.
The method according to this invention, feed of base oil are selected from least a in coal liquefaction solvent oil, heavy aromatics oil, the carbolineum.Coal liquefaction solvent oil can be from coal liquefaction craft or DCL/Direct coal liquefaction device.
A kind of preferred embodiment in, a) feed of base oil is at least a in coal liquefaction solvent oil and the heavy aromatics oil, preferred coal liquefaction solvent oil or heavy aromatics oil, most preferably heavy aromatics is oily; B) the low density mixed oil is hydrogenation tail oil.
The method according to this invention, preferably, a) feed of base oil (preferred coal liquefaction solvent oil) and the proportioning of low density mixed oil charging be by weight at 3: 7～7: 3, preferred 3.5: 6.5～6.5: 3.5, more preferably 4: 6～6: 4, most preferably 4.5: 5.5～5.5: 4.5.
The method according to this invention, preferably, the boiling range of feed of base oil (preferred coal liquefaction solvent oil) is at 220～450 ℃, and preferred 250～400 ℃, more preferably 260～380 ℃, most preferably 270～370 ℃.
Light constituent in the sealing oil of the present invention is removed.Preferably, boiling point below 120 ℃, below 250 ℃, preferred below 260 ℃, more preferably below 270 ℃, most preferably light constituent is removed below 280 ℃.
Usually, at step S2) in, fractionate out boiling range at 250～480 ℃, preferred 260～470 ℃, more preferably 265～470 ℃, most preferably 270～470 ℃ cut is as sealing oil.
Preferably, at step S2) in, the boiling range of bottom fraction is controlled at 350～480 ℃, preferred 400～470 ℃, more preferably 430～470 ℃, most preferably 450～460 ℃.
Should understand that the temperature of boiling range and bottom fraction is operating parameters, by the control boiling range, finally control flash-point and viscosity, because the light end of boiling range has deciding factor to flash-point, and wholely form the higher meeting of boiling range and cause viscosity to increase, on the contrary reduced viscosity then.Thereby the present invention is not limited to above-mentioned boiling range, and those skilled in the art can adjust flow process according to the condition of production, as long as the flash-point of final sealing oil product and viscosity are in required scope.
Preferably, method of the present invention further comprises: S3) will filter through the sealing oil that fractionation obtains, and remove mechanical impurity.When the content of impurities of the sealing oil that obtains after the fractionation meets the requirements, then do not need step S3).Preferably, the filtration step S3) is vacuum filtration.
Preferably, method of the present invention further comprises: S4) sealing oil is carried out dewatering and filtering, with removal moisture content, and can further remove mechanical impurity.When the water content of the sealing oil that obtains after the fractionation meets the requirements, then do not need step S4).
The stabilized hydrogenation device can be boiling bed hydrogenation device (for example T-star device), also can be fixed bed hydrogenation device (for example fixed bed heavy oil hydrogenation equipment).
One aspect of the present invention relates to sealing oil of the present invention is used for sheathed pump in coal liquefaction and petroleum refining process purposes.
Method of the present invention and sealing oil especially can be used for the occasion of coal liquefaction and refining of petroleum industry suspension bed, ebullated bed and other use heavy oil canned-motor pumps.
Method of the present invention and sealing oil are particularly useful for the sheathed pump of stabilized hydrogenation device and DCL/Direct coal liquefaction device.
Method of the present invention and sealing oil can also be used for high temperature and contain purge oil that solid pump flush sealing and isolation, high temperature contains solid valve, other devices that high cleanliness requires and the flushing isolation of occasion.
Another aspect of the present invention relates to the sealing oil production system, comprising:
D1) feed of base oil feeding mechanism,
D2) low density mixed oil feeding mechanism;
D3) stabilized hydrogenation device has:
The stabilized hydrogenation device portal is with D1) the feed of base oil feeding mechanism links to each other,
The outlet of stabilized hydrogenation device;
D5) fractionation plant has:
The fractionation plant entrance links to each other with the outlet of stabilized hydrogenation device,
The outlet of fractionation plant bottom fraction,
Preferably, feed of base oil is selected from least a in coal liquefaction solvent oil, heavy aromatics oil, the carbolineum;
Preferably, D2) low density mixed oil feeding mechanism is connected to the stabilized hydrogenation device portal or is connected to the fractionation plant entrance.
Preferably, system of the present invention further comprises: D4) hydrogen separation device has:
The hydrogen separation device entrance links to each other with the outlet of stabilized hydrogenation device,
The hydrogen separation device hydrogen outlet links to each other with the stabilized hydrogenation device portal,
The hydrogen separation device liquid exit links to each other with the fractionation plant entrance.
Preferably, sealing oil production system of the present invention further comprises: D6) mechanical impurity filtration unit links to each other with the outlet of fractionation plant bottom fraction.Preferably, D6) the mechanical impurity filtration unit is vacuum apparatus.
Preferably, sealing oil production system of the present invention further comprises: D7) the first storage tank is arranged on fractionation plant bottom fraction outlet and D6) between the mechanical impurity filtration unit.
Preferably, sealing oil production system of the present invention further comprises: D8) dewatering filtering device, with D6) the mechanical impurity filtration unit links to each other.
In the present invention, in reconcilable situation, all embodiment of the present invention, embodiment and feature can make up mutually.
" linking to each other ", " connection " or " fluid connection " among the present invention between employed two devices or the equipment, both can be directly link to each other between two devices or the equipment, connection or fluid be communicated with (for example passing through pipeline), also can indirectly link to each other, connection or fluid be communicated with, namely be connected with each other, can be across other equipment or device (for example, tank, pump, interchanger etc.) between connection or fluid are communicated with two devices or the equipment.
Below in conjunction with accompanying drawing method provided by the present invention is further described, but the present invention is not therefore subject to any restriction.For outstanding process thought of the present invention, the equipment of many necessity when having omitted industrial application among the figure is such as pipeline, process furnace, pump, valve and interchanger etc.
At first referring to Fig. 1, the feed of base oil feeding mechanism (for example, the feed of base oil storage tank) 408 and low density mixed oil feeding mechanism (for example, low density mixed oil storage tank) 409 logistics 501 enters stabilized hydrogenation device (hydrogenator by stabilized hydrogenation device portal 110, for example, T-star device) 101 carry out hydrogenation reaction.Stabilized hydrogenation bottom of device recycle pump 102 gets up the Matter Transfer in the reactor, guarantees that beds becomes ebullated bed, and has guaranteed the homogeneity of inside reactor logistics.
The column bottom temperature of control tower fractionation 201 obtains the tower bottom distillate of required scope boiling range as the sealing oil product.Tower bottom distillate (sealing oil) 511 discharged via tower bottom distillate outlet (outlet of fractionation plant bottom fraction) 212.Other cuts of separation column are discharged by tower top outlet 214, three side lines (side one line 216, side two wires 218, side three lines 220) respectively.
See also Fig. 2, Fig. 2 shows tank field and aftertreatment technology figure.Behind sealing oil 511 incomes the first storage tank 401 from tower bottom distillate outlet 212, sealing oil enters pump 406 via pipeline 512, filter by getting back to storage tank 401 by pipeline 513 through the first strainer (mechanical impurity filtration unit) 404, by the first strainer 404 the part mechanical impurity is filtered.Sealing oil after the filtration is squeezed into the second storage tank 402 by pump 406 via pipeline 514, and it is front through the second strainer 405 secondary filtrations that sealing oil enters the second storage tank 402.Sealing oil enters oil filter (dewatering filtering device) 403 pairs of mechanical impuritys, moisture content by the second storage tank 402 through pipeline 515 and filters, and filters that qualified to get back to the second storage tank 402 by pipeline 516 for subsequent use.Then be interrupted according to the coal liquification device needs and send into the coal liquification device use.
Those skilled in the art should understand that flow process illustrated in figures 1 and 2 only illustrates, and those skilled in the art can according to circumstances regulate flow process.
In Fig. 1, if when adopting hydrogenation tail oil as the low density mixed oil, also can only carry out hydrotreatment to feed of base oil (preferred coal liquefaction solvent oil).In this case, the low density mixed oil can enter separation column 201 at fractionation plant entrance 210, rather than enters at stabilized hydrogenation device portal 110.The low density mixed oil also can carry out fractionation at another separation column, and then mixes by proportioning with base oil (preferred coal liquefaction solvent oil) after the fractionation.Certainly, consider cost, preferred base oil (preferred coal liquefaction solvent oil) carries out fractionation with the low density mixed oil.
In Fig. 2, sealing oil can enter the second storage tank 402 after the first storage tank 401 directly filters through filter 404,405.The sealing oil of the first storage tank 401 can be transported to other storage tanks after filtering through filter 404, and no longer returns in the first storage tank 401.Also be so for the second storage tank 402, namely after oil filter 403 filters, no longer return the second storage tank 402, be transported to other storage tanks.And, when the content of impurities of the sealing oil that obtains after the fractionation meets the requirements, then do not need to filter (for example, when adopting the fixed bed hydrogenation device to carry out hydrogenation, content of impurities is usually very low) through first, second strainer 404,405.When the sealing oil water content that obtains after the fractionation meets the requirements, then do not need oil filter 403 to carry out processed.
Embodiment
Embodiment 1
Adopt flow process illustrated in figures 1 and 2.Tail oil and coal liquefaction solvent oil are fed to reactor at 1: 1.Fresh feed amount 150t/h, system feeding amount 240t/h, hydrogen consumption 17000Nm
3/ h.System pressure keeps 13.00MPa, and reactor inlet temperature keeps 318-320 ℃ to stablize, and 356 ℃ of reactor batch temperatures are stable.Fractionating system begins decline because tail oil enters system's afterreaction temperature, so fractionation hot feed temperature descends to some extent and maintains 356 ℃; The cold feed charging is kept 213 ℃; Tower top pressure is kept 0.15MPa; Vapor flow of stripper is kept 4.6t/h; Tower top temperature: 120-125 ℃; Each lateral line withdrawal function temperature is respectively: the side two wires: 216 ℃, and side three lines: 283 ℃, at the bottom of the tower: 340 ℃.Tower bottom distillate filters by flow process shown in Figure 2, further removes mechanical impurity and moisture content.
Embodiment 2
The fresh feed amount of carrying is to 160t/h, and ratio is 1: 1 heavy aromatics of tail oil, system feeding amount 250t/h.Because the feedstock property temperature of reaction that changes is reduced to 318 ℃, extracting reactor temperature in to 302 ℃ slightly.The hydrogen consumption drops to 10000Nm
3/ h.Slowly reduce the fresh feed amount to 80t/h.Fractionating system begins to descend owing to temperature of reaction and maintains 328 ℃ so fractionation hot feed temperature descends to some extent, and the cold feed charging is kept 205 ℃.Tower top pressure is kept 0.15Mpa.Vapor flow of stripper is kept 4.6t/h.Tower top temperature: 120-125 ℃.Each lateral line withdrawal function temperature: side two wires: 177 ℃, side three lines: 230 ℃, at the bottom of the tower: 322 ℃.Tower bottom distillate filters by flow process shown in Figure 2, further removes mechanical impurity and moisture content.
Embodiment 3
The ratio of adjusting tail oil and heavy aromatics is 4: 6.Fresh feed amount: 100t/h.System feeding amount 200～230t/h.Temperature of reaction is reduced to 317 ℃, slightly extracting reactor temperature in to 305 ℃.Hydrogen consumption 10000Nm
3/ h.After the sealing oil completion of processing, system's self-circulation.Fractionating system is because temperature of reaction decline maintains 325 ℃ so fractionation hot feed temperature descends to some extent, and the cold feed charging is kept 195 ℃.Tower top pressure is kept 0.15MPa.Vapor flow of stripper is kept 4.6t/h.Tower top temperature: 120-125 ℃.Each lateral line withdrawal function temperature: side two wires: 175 ℃, side three lines: 229 ℃, at the bottom of the tower: 318 ℃.Tower bottom distillate filters by flow process shown in Figure 2, further removes mechanical impurity and moisture content.
Embodiment 4 to 9
Embodiment 4 to 9 carries out according to the processing parameter shown in the table 1, and other operations are identical with embodiment 1.
Embodiment 10 to 11
Embodiment 10 to 11 carries out according to the processing parameter shown in the table 1, and solvent oil is processed according to operation hydrogenation and the fractionation of embodiment 1, and tail oil carries out fractionation respectively, and the solvent oil that then will process mixes with tail oil, the injection storage tank.Filter by flow process shown in Figure 2, further remove mechanical impurity and moisture content.
Comparative example 1
Comparative example 1 adopts solvent oil and anthracene washing oil as raw material, and other conditions are identical with embodiment 1.
The processing parameter of table 1 embodiment
Annotate: 1) " solvent oil " among the embodiment is the abbreviation of coal liquefaction solvent oil, employing be the solvent oil of DCL/Direct coal liquefaction device.
2) " tail oil " is the abbreviation of hydrogenation tail oil among the embodiment.
Performance test
I. sealing oil index analysis
(1) API gravity
API is the gravity index, with the relation of relative density be API=(141.5/ (0.99417* relative density-0.009181))-131.5.This index can be judged the density of sealing oil, and under specified temperature, the total mass number of contained material in the unit volume converts by density during chemical examination and gets.
(2) pour point
Pour point refers under prescribed condition, and the minimum temperature the when formation testing that has been cooled can be flowed is with a ℃ expression.
(3) insulation strength
Characterize the characteristic of transformer oil, apply the alternating electric field that speed is in accordance with regulations boosted continuously to the sample of regulation, until sample is breakdown, actual is exactly voltage breakdown.
(4) viscosity
Measuring of internal friction power is viscosity during liquid-flow, and viscosity number reduces with the rising of temperature.Most of lubricating oil come brand according to viscosity.The requirement of recycle pump producer is can convert between Saybolt viscosity and the viscosity numerical value.
(5) sulphur content
Measure the weight percent of sulphur in the sealing oil.
(6) copper strip test
Copper strips is immersed in the regular hour in the oil at a certain temperature, and color and Standard colour board compare to judge grade, characterizes the corrodibility of sealing oil.
(7) compatibility test
Copper bar was carried out in sealing oil soaking 30/60/90 day weighing and hardness test.
(8) moisture content
Moisture refers to the water content in the oil product, and is in weight percent.Several moisture determination methods are arranged in the petroleum product analysis standard, generally all are to represent with %, are vestige less than 0.03%.
(9) mechanical impurity
Be present in the oil product all impurity that are insoluble to the regulation solvent and be called mechanical impurity.
(10) flash-point
Under prescribed condition, the minimum temperature the when steam that the heating oil product is overflowed contacts generation moment fire with the mixture that air forms with flame is called flash-point, with a ℃ expression.
II. connecting each other between the laboratory indexes
(1) insulation strength and moisture content
Moisture content in the sealing oil can affect insulation strength, and water content is higher, and insulation strength is lower.Contain moisture content and do not contain the sealing oil of mechanical impurity, insulation strength is that voltage breakdown raises gradually along with the increase that punctures number of times.
(2) insulation strength and mechanical impurity
Mechanical impurity also can affect insulation strength, and impact is decided by the size of composition and the particle of mechanical impurity.
(3) copper strip corrosion
Can judge the Corrosion Protection of sealing oil, copper strip corrosion is the requirement of canned-motor pump producer.
The preferred control index of sealing oil is listed in the table 2.
Table 2 sealing oil is preferably controlled index
| Analysis project | The control index | Analytical procedure |
| API gravity | 25-35 | The standard density computing method |
| Pour point, ℃ | ＜21 | GB/T3535 |
| Insulation strength, v | ＞15000 | GB/T507 |
| Moisture, ppm | ＜30 | GB/T1113 |
| Viscosity (100 °F), S | 150-165 | GB/T265 |
| Viscosity (200 °F), S | ＞38 | GB/T265 |
| Sulphur content, % | ＜0.35 | GB/T17040 |
| Copper corrosion, level | 1a | GB/T5096 |
| Mechanical impurity, % | ≯0.05 | GB/T511 |
| Flash-point, ℃ | ≮180 | GB/T3536 |
Mixing oil analytical results before table 3 processing
| The sample title | Solvent oil mixes with tail oil | Solvent oil mixes with the anthracene washing oil |
| API gravity | 28 | 11 |
| 20 ℃ of density, kg/m 3 | 893.9 | 989.8 |
| Pour point, ℃ | ＜21 | ＜21 |
| Insulation strength, v | 10400 | 21600 |
| Viscosity (100 °F), S | 84.6 | 62.1 |
| Viscosity (200 °F), S | 39.2 | / |
| Sulphur content, % | 0.035 | 0.15 |
| Copper corrosion, level | lb | 3b |
| Mechanical impurity, % | 0.004 | / |
| Flash-point, ℃ | 128 | 114 |
The sealing oil copper strips compatibility test analytical results of table 4 embodiment 1
The sealing oil copper strips compatibility test analytical results of embodiment 2 to 11 shows that its outward appearance has no significant change.
Table 5 (a) sealing oil analytical results
Table 5 (b) sealing oil analytical results
Can be found out that by data in the table API gravity of comparative example 1, viscosity and copper strips experiment are all undesirable.
The sealing oil quality verification
The sealing oil throwing device of embodiment 1-3 used 6 months, and pump operating cycle is stable, and three embodiment detect, and situation is as follows:
(1) embodiment 1: 63 ℃ of bearing bush temperatures; Vibration 0.536mm/s.
(2) embodiment 2: 56.5 ℃ of bearing bush temperatures; Vibration 0.34mm/s.
(3) embodiment 3: 47 ℃ of bearing bush temperatures; Vibration 0.30mm/s.
And the set(ting)value of reactor cycles pump is: 110 ℃ of bearing bush temperatures; Vibration 10mm/s.
When the sealing oil throwing device of embodiment 4-11 used, recycle pump was also stable.
According to running condition, after coming into operation, sealing oil of the present invention do not cause the significantly variation of bearing bush temperature, vibration values, and far below the jumping car value of setting, use oily requirement in the time of can satisfying pump operating cycle fully.
And from running condition, adopt the embodiment 2 of heavy aromatics and 3 sealing oil more a shade better than embodiment 1 effect that adopts coal liquefaction solvent oil, but the two uses oily requirement all can satisfy pump operating cycle the time.
Certainly, the present invention also can have other embodiments, and the above is preferred implementation of the present invention only, is not to limit protection scope of the present invention; Without departing from the spirit of the invention, those of ordinary skills are every to make various corresponding variations and modification according to content of the present invention, all belongs to the protection domain of claim of the present invention.
Claims (54)
1. circulating pump sealing oil comprises:
A) base oil, described base oil are selected from behind the hydrogenation behind coal liquefaction solvent oil, the hydrogenation behind heavy aromatics oil, the hydrogenation at least a in the carbolineum;
B) low density mixed oil, described low density mixed oil are selected from least a in hydrogenation tail oil, hydrogenation wax oil, hydrogenation lubricating oil, the hydrogenation heavy distillate.
2. circulating pump sealing oil according to claim 1, wherein, coal liquefaction solvent oil is from coal liquefaction craft or DCL/Direct coal liquefaction device behind the described hydrogenation.
3. circulating pump sealing oil according to claim 1, wherein, described b) the low density mixed oil is selected from hydrogenation tail oil.
4. circulating pump sealing oil according to claim 1, wherein, described a) base oil is at least a in the heavy aromatics oil behind coal liquefaction solvent oil and the hydrogenation behind the hydrogenation; Described b) the low density mixed oil is hydrogenation tail oil.
5. circulating pump sealing oil according to claim 1, wherein, described a) base oil is heavy aromatics oil behind coal liquefaction solvent oil or the hydrogenation behind the hydrogenation; Described b) the low density mixed oil is hydrogenation tail oil.
6. circulating pump sealing oil according to claim 1, wherein, described a) base oil is heavy aromatics oil behind the hydrogenation; Described b) the low density mixed oil is hydrogenation tail oil.
7. according to claim 1 to 6 each described circulating pump sealing oils, wherein, described a) base oil and described b) proportioning of low density mixed oil is 3: 7～7: 3 by weight.
8. according to claim 1 to 6 each described circulating pump sealing oils, wherein, described a) base oil and described b) proportioning of low density mixed oil is 3.5: 6.5～6.5: 3.5 by weight.
9. according to claim 1 to 6 each described circulating pump sealing oils, wherein, described a) base oil and described b) proportioning of low density mixed oil is 4: 6～6: 4 by weight.
10. according to claim 1 to 6 each described circulating pump sealing oils, wherein, described a) base oil and described b) proportioning of low density mixed oil is 4.5: 5.5～5.5: 4.5 by weight.
11. to 6 each described circulating pump sealing oils, wherein, the boiling range of described circulating pump sealing oil is at 250～480 ℃ according to claim 1.
12. to 6 each described circulating pump sealing oils, wherein, the boiling range of described circulating pump sealing oil is at 260～470 ℃ according to claim 1.
13. to 6 each described circulating pump sealing oils, wherein, the boiling range of described circulating pump sealing oil is at 265～470 ℃ according to claim 1.
14. to 6 each described circulating pump sealing oils, wherein, the boiling range of described circulating pump sealing oil is at 270～470 ℃ according to claim 1.
15. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the API gravity of described circulating pump sealing oil is 20～40.
16. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the API gravity of described circulating pump sealing oil is 22～38.
17. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the API gravity of described circulating pump sealing oil is 24～36.
18. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the API gravity of described circulating pump sealing oil is 25～35.
19. to 6 each described circulating pump sealing oils, wherein, the pour point of described circulating pump sealing oil is less than 28 ℃ according to claim 1.
20. to 6 each described circulating pump sealing oils, wherein, the pour point of described circulating pump sealing oil is less than 26 ℃ according to claim 1.
21. to 6 each described circulating pump sealing oils, wherein, the pour point of described circulating pump sealing oil is less than 23 ℃ according to claim 1.
22. to 6 each described circulating pump sealing oils, wherein, the pour point of described circulating pump sealing oil is less than 21 ℃ according to claim 1.
23. to 6 each described circulating pump sealing oils, wherein, the insulation strength of described circulating pump sealing oil is greater than 15000V according to claim 1.
24. to 6 each described circulating pump sealing oils, wherein, the insulation strength of described circulating pump sealing oil is greater than 18000V according to claim 1.
25. to 6 each described circulating pump sealing oils, wherein, the insulation strength of described circulating pump sealing oil is greater than 20000V according to claim 1.
26. to 6 each described circulating pump sealing oils, wherein, the insulation strength of described circulating pump sealing oil is greater than 25000V according to claim 1.
27. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 37.8 ℃ is 135～165sus.
28. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 37.8 ℃ is 145～165sus.
29. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 37.8 ℃ is 150～165sus.
30. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 37.8 ℃ is 155～160sus.
31. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 93.3 ℃ is 38～50sus.
32. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 93.3 ℃ is 38～45sus.
33. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 93.3 ℃ is 38～42sus.
34. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the viscosity of described circulating pump sealing oil under 93.3 ℃ is 40～42sus.
35. to 6 each described circulating pump sealing oils, wherein, the sulphur content of described circulating pump sealing oil is by weight less than 0.4% according to claim 1.
36. to 6 each described circulating pump sealing oils, wherein, the sulphur content of described circulating pump sealing oil is by weight less than 0.35% according to claim 1.
37. to 6 each described circulating pump sealing oils, wherein, the sulphur content of described circulating pump sealing oil is by weight less than 0.3% according to claim 1.
38. to 6 each described circulating pump sealing oils, wherein, the sulphur content of described circulating pump sealing oil is by weight less than 0.2% according to claim 1.
39. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the copper strip test of described circulating pump sealing oil reaches the 1a standard of GB/T5096.
40. to 6 each described circulating pump sealing oils, wherein, the water content of described circulating pump sealing oil is by weight less than or equal to 70ppm according to claim 1.
41. to 6 each described circulating pump sealing oils, wherein, the water content of described circulating pump sealing oil is by weight less than or equal to 50ppm according to claim 1.
42. to 6 each described circulating pump sealing oils, wherein, the water content of described circulating pump sealing oil is by weight less than or equal to 30ppm according to claim 1.
43. to 6 each described circulating pump sealing oils, wherein, the water content of described circulating pump sealing oil is by weight less than or equal to 20ppm according to claim 1.
44. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the mechanical impurity of described circulating pump sealing oil by weight≤0.1%.
45. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the mechanical impurity of described circulating pump sealing oil by weight≤0.05%.
46. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the mechanical impurity of described circulating pump sealing oil by weight≤0.02%.
47. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the mechanical impurity of described circulating pump sealing oil by weight≤0.01%.
48. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the flash-point of described circulating pump sealing oil 〉=150 ℃.
49. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the flash-point of described circulating pump sealing oil 〉=170 ℃.
50. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the flash-point of described circulating pump sealing oil 〉=180 ℃.
51. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the flash-point of described circulating pump sealing oil 〉=200 ℃.
52. according to claim 1 to 6 each described circulating pump sealing oils, wherein, the flash-point of described circulating pump sealing oil 〉=220 ℃.
53. in coal liquefaction and petroleum refining process, be used for according to claim 1 the purposes of sheathed pump to 52 each described circulating pump sealing oils.
54. 3 described purposes according to claim 5, described pump is the recycle pump for suspension bed, ebullated bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010249099 CN101914407B (en) | 2010-08-09 | 2010-08-09 | Circulating pump sealing oil and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010249099 CN101914407B (en) | 2010-08-09 | 2010-08-09 | Circulating pump sealing oil and application thereof |
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| CN111621318B (en) * | 2020-05-14 | 2022-03-15 | 中国神华煤制油化工有限公司 | Method and device for producing sealing oil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088249A (en) * | 1992-12-14 | 1994-06-22 | 四川石油管理局南充炼油厂 | A kind of high pressure seal oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088249A (en) * | 1992-12-14 | 1994-06-22 | 四川石油管理局南充炼油厂 | A kind of high pressure seal oil |
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