CN105953075A - Long-distance conveying method for heavy fuel oil - Google Patents
Long-distance conveying method for heavy fuel oil Download PDFInfo
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- CN105953075A CN105953075A CN201610312479.1A CN201610312479A CN105953075A CN 105953075 A CN105953075 A CN 105953075A CN 201610312479 A CN201610312479 A CN 201610312479A CN 105953075 A CN105953075 A CN 105953075A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
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Abstract
The invention discloses a long-distance conveying method for heavy fuel oil. The method comprises the steps that the heavy fuel oil and a low-solidification-point oil product are mixed to form blending oil, so that the kinematic viscosity and solidification point of the heavy fuel oil are lowered, and the mass ratio of the heavy fuel oil and the low-solidification-point oil product is 1: (0.6-3); the heavy fuel oil and the low-solidification-point oil product are conveyed out from storage tanks correspondingly and conveyed into a blending pump through pipelines to be blended preliminarily; then the mixture is conveyed into a pipeline mixer through a pipeline to be blended secondarily; and then the mixture obtained through secondary blending is conveyed into an outer oil conveying pump through a pipeline and conveyed into a long conveying pipeline through the outer oil conveying pump, oil product blending is completed in the long conveying pipeline, and finally a finished product is conveyed into a destination storage tank. According to the long-distance conveying method, long-distance pipeline blending cooling conveying of the heavy fuel oil is achieved, the working condition of equipment operation is stable in the conveying process, and all key parameter values are normal.
Description
Technical field
The invention belongs to oil product conveying technology field, be specifically related to a kind of heavy oil means by blending, improve heavy
The relevant nature of fuel oil, and adjust conveying technological process, it is achieved heavy oil in-line blending and the method for long distance delivery.
Background technology
Heavy oil is a kind of thickness, the oil product of easily solidification, it is impossible to directly carry out the cold conveying of pipeline.At present, domestic,
The mode of movement that outer heavy oil is generally taked is for adding the hot channel defeated technique of heat or tank car conveying.Add the hot channel defeated technique of heat
Refer to: heavy oil is heated temperature and the condition that (the general way using heat exchanger heat exchange) extremely can carry with pipeline,
Using long distance pipeline to be transported to a kind of course of conveying of destination again, for the conveying that distance is longer, heavy oil may need
Want heating for multiple times.Tank car conveying refers to: in heavy oil reservoir area, heavy oil is loaded in specific by entrucking form
Tank wagon in, after then heavy oil being carried to destination by automobile, then by the form unloaded heavy fuel
Oil unloads toward the reservoir area specified.
Existing two kinds of mode of movements are respectively provided with unsurmountable defect, add defeated or tank car conveying the ton oil of hot channel heat and transport
Costly, add the heating system in the hot channel defeated technique of heat simultaneously and use heating furnace burning fuel to complete, this process meeting
Consume substantial amounts of fuel, certain tail gas can be produced, environment is had a great impact；Tank car course of conveying fuel oil necessarily has
Certain evaporating loss, pollutes the environment, and transport tank car is in running simultaneously, has certain sound pollution, discharge
Vehicle exhaust can cause atmospheric pollution etc..
Summary of the invention
The present invention is to solve the technological deficiency that freight in heavy oil course of conveying is high, produce the pollutions such as air,
Provide the long-distance delivery method of a kind of heavy oil, not only achieve the blending of heavy oil long-distance pipe cold defeated, protect
In card course of conveying, operating condition is steady, and every key parameter values is all normal, and what long distance delivery was not changed by seasonal temperature
Impact, can be interrupted conveying simultaneously.
The long-distance delivery method of a kind of heavy oil, is by heavy oil and low condensation point oil product (such as: crude oil) blending
Forming tempered oil, reduce kinematic viscosity and the condensation point of heavy oil, described heavy oil with the mass ratio of low condensation point oil product is
1:0.6-3, exports with low condensation point oil product respectively by heavy oil from storage tank, is input to concoct in pump by pipeline respectively, enters
The preliminary blending of row；Then it is input in pipe-line mixer by pipeline, carries out secondary blending；Then it is input to outer defeated by pipeline
In oil pump, it is input in long distance pipeline through outer oil transfer pump, long distance pipeline completes petroleum products blending, finally enters destination
Storage tank.
Pour point, condensation point in order to ensure Blend Stocks oil meet the cold defeated requirement of in-line blending, the condensation point phase of described tempered oil simultaneously
Than conveying area minimum ground temperature low 5 DEG C and more than.
The most safely and effectively being delivered to destination in order to ensure blending oil product, the kinematic viscosity of the tempered oil of described conveying guarantees
Within the specific limits, the friction drag loss conveying Yang Cheng less than delivery pump of oil product is met.
Preferred described heavy oil is 1:1-2 with the mass ratio of low condensation point oil product.
Safely and effectively carry and the defeated quantitative limitation of pipe design in order to ensure blending oil product, pipeline fortune in described long distance pipeline
Row feed flow is 1000-1200m3/h；In pipeline, the flow velocity of oil product is 0.80-0.98m/s.
, condensation point uniform in order to ensure petroleum products blending in pipeline meets requirement, outside blending oil product has good mobility and guarantees
Defeated pump feed is timely, and the forward and backward operation pressure limit of described blending pump pump is respectively as follows: 0.1-0.3Mpa and 0.9-1.2Mpa, pump
Rear tempered oil temperature is not less than 30 DEG C.
Properly functioning in order to ensure output pump, ensure that blending oil product safely and effectively carries, described outer oil transfer pump pump is forward and backward
Operation pressure is respectively as follows: more than or equal to 0.4Mpa with less than or equal to 4.2Mpa, and after pump, tempered oil temperature is not less than 30 DEG C.
Arrive at when rear safety and steady enters storage tank and enters tank in order to ensure blending oil product and there is preferable mobility, blending
Heavy oil arrive at pressure and be not higher than 0.5Mpa, temperature is not less than 10 DEG C.
Compared with prior art, advantages of the present invention and good effect be: present invention achieves the room temperature conveying of heavy oil,
Reducing conveying cost, heavy oil uses the conveying of in-line blending cold transferring technology, and transportation expenses is 15 yuan/ton；And use groove
Car transportation expenses is 60 yuan/ton；According to pipeline heat conveying, conveying cost is 35 yuan/ton.As known from the above, cold defeated with
Tank car conveying contrast, cost of transportation of saving per ton reaches 45 yuan；The cold defeated conveying contrast with heat, per ton saves cost of transportation
Reach 20 yuan.Visible by contrast, pipeline cold transmission method economic benefits.
It addition, pipeline is cold defeated can realize the closed conveying to heavy oil, decrease in heavy fuel tank car transportation
Evaporating loss, reduce environmental pollution.Use that pipeline is cold defeated makes transport tank car quantity reduce in a large number simultaneously, tail gas can be reduced
Discharge, minimizing sound pollution etc., while effectively can improving surrounding enviroment, it is possible to alleviate transportation to a certain extent
On anxiety, significant to national economy sustainable development, have huge social benefit.
Detailed description of the invention
Below in conjunction with detailed description of the invention, technical scheme is described in further detail.
The present invention uses the oil product that kinematic viscosity is less, condensation point is relatively low, by appropriateness ratio and heavy oil blending mix homogenously
Form tempered oil, reduce kinematic viscosity and the condensation point of heavy oil, during operation, by controlling the defeated flow of pipe, it is achieved heavy
Fuel oil high efficiency, low cost long-distance pipe Intermittent Cold defeated.
The process operation mode that the present invention uses is: the present invention according to blending ratio by heavy oil and oil product respectively from storage tank
Middle output, is input to concoct in pump by pipeline respectively, tentatively concocts, and the operation pressure limit concocting pump pump forward and backward is divided
It is not: 0.1-0.3Mpa and 0.9-1.2Mpa that after pump, tempered oil temperature is not less than 30 DEG C；Then it is input to pipeline by pipeline mix
In clutch, carry out secondary blending；Then it is input in outer oil transfer pump by pipeline, is input in long distance pipeline through outer oil transfer pump,
The forward and backward operation pressure of outer oil transfer pump pump is respectively as follows: more than or equal to 0.4Mpa with less than or equal to 4.2Mpa, concocts oil temperature after pump
Degree is not less than 30 DEG C；During long distance pipeline long distance delivery, along with the continuous conveying of mixing raw oil, blending oil product is not
Disconnected ground blends mutually, gradually completes product pipeline blending, finally enters destination's storage tank.Pressure when blending oil product arrives at
Power is not higher than 0.5Mpa, and temperature is not less than 10 DEG C, and higher than conveying blending oil product condensation point.
Cold defeated process conditions concocted by former (expecting) oil-piping that the present invention uses:
1) condensation point (may be simply referred to as condensation point) of the tempered oil carried lower than the minimum ground temperature of this area during conveying 5 DEG C and more than,
It is preferably 5 DEG C；It is that can pipeline safe efficient run owing to can the condensation point/pour point of Blend Stocks oil reach to manage defeated technological requirement
Deciding factor.The condensation point of same oil product and pour point are also not completely equivalent, general pour point in the range of condensation point adds 3-5 DEG C, because of
When this reaches minimum ground temperature in order to ensure oil product, oil product also has good mobility, it is ensured that after stopping transportation, the next delivery of energy that rises is normally carried out,
Require carry out managing ground temperature when defeated raw oil condensation point carries than pipeline low 5 DEG C and more than.
Such as somewhere pipeline minimum ground temperature in each season situation:
Ground temperature in summer (6.1-9.30): 22 DEG C；
Spring, autumn ground temperature (4.1-5.31；10.1-12.15): 15 DEG C；
Ground temperature in winter (12.16-3.30): 7.7 DEG C.
Therefore, former (expecting) is oily when carrying summer, oil product condensation point 17 DEG C；
Former (expecting) is oily when carrying in spring, autumn, oil product condensation point 10 DEG C；
When former (expecting) oil carries in the winter time, oil product condensation point 2.7 DEG C.
2) the tempered oil kinematic viscosity carried is suitable, and i.e. during transporting oil, the friction drag loss of oil product is (long less than delivery pump
Defeated pump and feed pump sum) conveying Yang Cheng.
The blending of former (expecting) oil is a process, is not simply two kinds or above oil product blending the most just to be completed, oil
In the compound mode of kind class, proportioning and whole course of conveying, technological parameter all can have influence on petroleum products blending the most successfully.The present invention
Through many experiments, obtain the cold defeated technique of heavy oil of the present invention, use this method conveying heavy oil, reduce weight
Matter fuel oil conveying cost, decreases and uses other mode of movements and the environmental pollution that causes.
Embodiment 1
By Buddhist nun sieve's NILE crude oil, the auspicious heavy oil of horse, Sa Duen crude oil after the technique of the present invention is concocted, certain year October
By the long-distance transportation of Laizhou City of Shandong Province to Changyi City, minimum ground temperature is 15 DEG C, and pipeline overall length is about 106km.Buddhist nun sieve
NILE crude oil, the auspicious heavy oil of horse, Sa Duen crude oil are concocted for 1:1:1 in mass ratio, and three kinds of oil products amount to conveying 60,000 tons.
It is crude base oil and the performance parameter of tempered oil as shown in table 1.
Table 1: base oil and tempered oil main quality analytical data
In-line blending conveying technological process be, by Buddhist nun sieve's NILE crude oil, the auspicious heavy oil of horse, Sa Duen crude oil respectively from
Buddhist nun sieve's NILE crude oil storage tank, horse auspicious heavy fuel oil tank, the outlet output of Sa Duen crude oil storage tank, each raw oil goes out tank temperature
Degree requires as auspicious crude oil >=20 DEG C of horse, Buddhist nun sieve crude oil >=30 DEG C, Sa Duen crude oil >=20 DEG C；Respectively by pipeline, through filter
After filtering the impurity in oil product, it is input to concoct in pump, tentatively concocts；Then it is input in pipe-line mixer by pipeline,
Carry out secondary blending；Then it is input in outer oil transfer pump by pipeline, is input in long distance pipeline through outer oil transfer pump, long defeated
Pipeline completes oil product fully concoct, finally enter destination's storage tank.
During the conveying of above-mentioned in-line blending, Process operating parameters is:
Conduit running feed flow is 1000-1100m3/h；In pipeline, the flow velocity of oil product is 0.81-0.89m/s；
The Reynolds number of pipeline transferring raw material oil: 5000-10000；Friction drag during oil transportation is 230-250m；
During conduit running, the operation pressure concocting pump pump forward and backward is respectively 0.10Mpa and 1.0Mpa；Before outer oil transfer pump pump,
After operation pressure be respectively 0.60 ± 0.05MPa and 2.40 ± 0.05MPa, temperature: 35 ± 2 DEG C；Laizhou Outlet pressure: 2.40
± 0.05MPa, temperature: 35 ± 2 DEG C；
Two valve chamber pipeline pressure: 1.15 ± 0.05MPa during conduit running, temperature: 22 ± 2 DEG C；
Four valve chamber pipeline pressure: 0.65 ± 0.05MPa during conduit running, temperature: 19 ± 2 DEG C；
Changyi Inlet pressure during conduit running: 0.15 ± 0.05MPa, temperature: 18 ± 2 DEG C.
Whole service process, pump normal operation, all technological parameters are stable, and all parameters are all permitted in operating scheme parameter
In the range of, it is achieved that the long-distance pipe blending conveying of heavy oil.
Embodiment 2
By auspicious for horse heavy oil, ESPO crude oil, Ah's Taka crude oil after the technique of the present invention is concocted, within certain year, December is by mountain
The long-distance transportation of Dong Sheng Laizhou City is to Changyi City, and pipeline overall length is about 106km, and during operation, minimum ground temperature is 15 DEG C.Such as table 4
It show crude base oil and the performance parameter of tempered oil.
Table 4: base oil and tempered oil main quality analytical data
In-line blending conveying technological process is, by auspicious for horse heavy oil, ESPO crude oil, Ah's Taka crude oil respectively from Ma Rui
Heavy fuel oil tank, ESPO crude oil storage tank, the outlet output of Ah's Taka crude oil storage tank, the requirement of each raw oil opening temperature is
Auspicious heavy oil >=30 DEG C of horse；Ah's Taka crude oil >=30 DEG C；ESPO crude oil >=20 DEG C；Respectively by pipeline, through filter
After filtering the impurity in oil product, it is input to concoct in pump, tentatively concocts；Then it is input in pipe-line mixer by pipeline,
Carry out secondary blending；Then it is input in outer oil transfer pump by pipeline, is input in long distance pipeline through outer oil transfer pump, long defeated
Pipeline completes oil product fully concoct, finally enter destination's storage tank.
During the conveying of above-mentioned in-line blending, Process operating parameters is:
Conduit running feed flow: 1100-1200m3/h；Raw pipeline material oil flow velocity: 0.895-0.975m/s；
Reynolds number: 10000-15000 during pipeline transferring raw material oil；The friction drag calculated: 200-240m；
The operation pressure concocting pump pump forward and backward during conduit running is respectively 0.10Mpa and 1.0Mpa；Outer oil transfer pump pump is forward and backward
Operation pressure be respectively 0.7 ± 0.05MPa and 2.00 ± 0.2MPa, Laizhou Outlet pressure: 2.00 ± 0.2MPa, temperature:
25±2℃；
Two valve chamber pipeline pressure: 1.0 ± 0.1MPa during conduit running, temperature: 18 ± 2 DEG C；
Four valve chamber pipeline pressure: 0.55 ± 0.1MPa during conduit running, temperature: 13 ± 2 DEG C；
Changyi Inlet pressure during conduit running: 0.15 ± 0.05MPa, temperature: 13 ± 2 DEG C (more than oil product condensation point 9 DEG C).
Whole industry park plan process, pump normal operation, all technological parameters are stable, and all parameters are all in operating scheme parameter
In tolerance band, it is achieved that the long distance delivery of heavy oil.
Embodiment 3
By ESPO crude oil, M100 heavy oil after the technique of the present invention is concocted, certain year February is by Laizhou City of Shandong Province
Long-distance transportation is to Changyi City, and pipeline overall length is about 106km, and minimum ground temperature is 8 DEG C.This embodiment heavy oil M100
After blending, miscella is at condensation point-1 DEG C, viscosity (13mm2/ s (40 DEG C)) in the case of the cold defeated ruuning situation of in-line blending.
It is crude base oil and the performance parameter of tempered oil as shown in table 5.
Table 5: base oil and tempered oil main quality analytical data
In-line blending conveying technological process be, by ESPO crude oil, M100 heavy oil respectively from ESPO crude oil storage tank,
The outlet output of M100 heavy fuel oil tank, each raw oil opening temperature requires as M100 heavy oil >=30 DEG C；ESPO
Crude oil >=20 DEG C；Respectively by pipeline, after the impurity being filtered out in oil product, it is input to concoct in pump, carries out preliminary
Blending；Then it is input in pipe-line mixer by pipeline, carries out secondary blending；Then it is input in outer oil transfer pump by pipeline,
It is input in long distance pipeline through outer oil transfer pump, long distance pipeline completes oil product and fully concocts, finally enter destination's storage tank.
During the conveying of above-mentioned in-line blending, Process operating parameters is:
Conduit running feed flow: 1100-1200m3/h；Raw pipeline material oil flow velocity: 0.895-0.975m/s.
Reynolds number: 15000-20000 during pipeline transferring raw material oil；The friction drag calculated: 220-280m；Pipeline fortune during oil transportation
The operation pressure concocting pump pump forward and backward during row is respectively 0.10Mpa and 1.0Mpa；The operation pressure that outer oil transfer pump pump is forward and backward
It is respectively 0.70 ± 0.05MPa and 3.10 ± 0.3MPa, Laizhou Outlet pressure: 3.10 ± 0.3MPa, temperature: 28 ± 3 DEG C；
Two valve chamber pipeline pressure: 1.7 ± 0.3MPa during conduit running, temperature: 19 ± 3 DEG C；
Four valve chamber pipeline pressure: 0.85 ± 0.3MPa during conduit running, temperature: 12 ± 2 DEG C；
Changyi Inlet pressure during conduit running: 0.30 ± 0.15MPa, temperature: 12 ± 2 DEG C.
Whole industry park plan process, pump normal operation, all technological parameters are stable, and all parameters are all in operating scheme parameter
In tolerance band, it is achieved that the long distance delivery of heavy oil.
Embodiment 4
By this smooth eight dragon crude oil, M100 heavy oil after the technique of the present invention is concocted, certain year February is by Laizhou City of Shandong Province
Long-distance transportation is to Changyi City, and pipeline overall length is about 106km, and minimum ground temperature is 8 DEG C.The present embodiment embodies heavy oil
After M100 is by blending, miscella is at condensation point-2 DEG C, viscosity (25mm2/ s (40 DEG C)) in the case of the cold defeated operation of in-line blending
Situation.It is crude base oil and the performance parameter of tempered oil as shown in table 5.
Table 5: base oil and tempered oil main quality analytical data
In-line blending conveying technological process is, by these smooth eight dragon crude oil, M100 heavy oils respectively from these smooth eight dragon crude oil storages
Tank, the outlet output of M100 heavy fuel oil tank, each raw oil opening temperature requires as M100 heavy oil >=30 DEG C；
These smooth eight dragon crude oil >=20 DEG C；Respectively by pipeline, after the impurity being filtered out in oil product, it is input to concoct in pump,
Tentatively concoct；Then it is input in pipe-line mixer by pipeline, carries out secondary blending；Then outside being input to by pipeline
In oil transfer pump, it is input in long distance pipeline through outer oil transfer pump, long distance pipeline completes oil product and fully concocts, finally enter
Destination's storage tank.
During the conveying of above-mentioned in-line blending, Process operating parameters is:
Conduit running feed flow: 1100-1200m3/h；Raw pipeline material oil flow velocity: 0.895-0.975m/s.
Reynolds number: 16000-22000 during pipeline transferring raw material oil；The friction drag calculated: 230-290m；Pipeline fortune during oil transportation
The operation pressure concocting pump pump forward and backward during row is respectively 0.10Mpa and 1.0Mpa；The operation pressure that outer oil transfer pump pump is forward and backward
It is respectively 0.75 ± 0.05MPa and 3.20 ± 0.2MPa, Laizhou Outlet pressure: 3.20 ± 0.3MPa, temperature: 30 ± 2 DEG C；
Two valve chamber pipeline pressure: 1.7 ± 0.3MPa during conduit running, temperature: 19 ± 3 DEG C；
Four valve chamber pipeline pressure: 0.86 ± 0.3MPa during conduit running, temperature: 13 ± 2 DEG C；
Changyi Inlet pressure during conduit running: 0.30 ± 0.15MPa, temperature: 13 ± 2 DEG C.
Whole industry park plan process, pump normal operation, all technological parameters are stable, and all parameters are all in operating scheme parameter
In tolerance band, it is achieved that the long distance delivery of heavy oil.
As can be seen from the above embodiments, annual at northern area, the moon that especially October to next year 2 month temperature is relatively low
Part, concocted by the raw oil (crude oil, heavy oil etc.) of different ratios, the condensation point of fuel oil can be greatly reduced and glue
Degree, under certain in-line blending conveying process conditions, makes to disclosure satisfy that pipe long-distance by the cold defeated heavy oil of pipeline
Cold defeated technological requirement.
Above example is only several in the several preferred implementation of the present invention, it is noted that the invention is not restricted to above-mentioned
Embodiment；For a person skilled in the art, still the technical scheme described in previous embodiment can be modified,
Or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution take off
Spirit and scope from claimed technical solution of the invention.
Claims (8)
1. the long-distance delivery method of a heavy oil, it is characterized in that, heavy oil is formed miscella with low condensation point petroleum products blending, reduce kinematic viscosity and the condensation point of heavy oil, described heavy oil is 1:0.6-3 with the mass ratio of low condensation point oil product, heavy oil is exported respectively with low condensation point oil product from storage tank, is input to concoct in pump by pipeline respectively, tentatively concocts；Then it is input in pipe-line mixer by pipeline, carries out secondary blending；It is input in outer oil transfer pump finally by pipeline, is input in long distance pipeline through outer oil transfer pump, long distance pipeline completes petroleum products blending, finally enter destination's storage tank.
The long-distance delivery method of a kind of heavy oil the most according to claim 1, it is characterised in that when the condensation point of described tempered oil compares conveying the minimum ground temperature of location low 5 DEG C and more than.
The long-distance delivery method of a kind of heavy oil the most according to claim 1, it is characterised in that the kinematic viscosity of the tempered oil of described conveying meets the friction drag loss conveying Yang Cheng less than delivery pump of oil product.
The long-distance delivery method of a kind of heavy oil the most according to claim 1, it is characterised in that described heavy oil is 1:1-2 with the mass ratio of low condensation point oil product.
The long-distance delivery method of a kind of heavy oil the most according to claim 1, it is characterised in that in described long distance pipeline, conduit running feed flow is 1000-1200m3/h；In pipeline, the flow velocity of oil product is 0.80-0.98m/s.
The long-distance delivery method of a kind of heavy oil the most according to claim 1, it is characterised in that the forward and backward operation pressure limit of described blending pump pump is respectively as follows: 0.1-0.3Mpa and 0.9-1.2Mpa, and after pump, tempered oil temperature is not less than 30 DEG C.
7. according to the long-distance delivery method of a kind of heavy oil described in any one of claim 1-6, it is characterized in that, the forward and backward operation pressure of described outer oil transfer pump pump is respectively as follows: more than or equal to 0.4Mpa with less than or equal to 4.2Mpa, and after pump, tempered oil temperature is not less than 30 DEG C.
The long-distance delivery method of a kind of heavy oil the most according to claim 7, it is characterised in that heavy oil arrives at pressure and is not higher than 0.5Mpa, heavy fuel oil temperature is not less than 10 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109382037A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | A kind of petroleum products blending system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382037A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | A kind of petroleum products blending system and method |
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| Publication number | Publication date |
|---|---|
| CN105953075B (en) | 2019-02-22 |
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