CN109342493A - A kind of measuring method of diesel oil wax precipitation point - Google Patents
A kind of measuring method of diesel oil wax precipitation point Download PDFInfo
- Publication number
- CN109342493A CN109342493A CN201811533489.3A CN201811533489A CN109342493A CN 109342493 A CN109342493 A CN 109342493A CN 201811533489 A CN201811533489 A CN 201811533489A CN 109342493 A CN109342493 A CN 109342493A
- Authority
- CN
- China
- Prior art keywords
- sample
- wax
- temperature
- test tube
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to a kind of measuring methods of diesel oil wax precipitation point.Its technical solution is the following steps are included: (1) analyzes diesel oil sample cloud point；(2) sample is placed in corresponding thermostated cooling bath according to cloud point, it is 1 DEG C higher than cloud point；(3) after sample is down to cryostat temperature, observation in every constant temperature 0.5 hour is primary, sees whether sample analyses wax；(4) 5 hours of sample do not analyse wax, then thermostated cooling bath temperature are lowered 1 DEG C, repeat third step, until sample analyses wax, then temperature at this time is the wax precipitation point of the sample；(5) if sample analyses wax within 0.5 hour, sample is taken out from cryostat, is preheated again, then re-start test with 2 DEG C of temperature higher than last time test temperature, so repeat to test, until measuring the wax precipitation point of sample.Beneficial effect is: it can guarantee that the wax precipitation point of diesel oil controls under certain temperature, it is ensured that use feeling of the diesel oil under corresponding low temperature is good, it is not in analysis wax phenomenon within the scope of predetermined temperature.
Description
Technical field
The present invention relates to a kind of diesel oil measuring method, in particular to a kind of measuring method of diesel oil wax precipitation point.
Background technique
Condensation point and cold filter plugging point are the important indicators for characterizing diesel oil at low-temperature service performance.Condensation point (SP) is to show diesel oil in low temperature
The maximum temperature to lose flowability in environment；When cold filter plugging point (CFPP) then can be shown that diesel oil passes through diesel engine oil supply system
It can cause the maximum temperature of filter net jam.But it is qualified in practical applications, often to will appear oil pour point, cold filter plugging point, but winter
Gas station etc. will appear the phenomenon that coating of wax film is precipitated in oil product surface when storing diesel oil, influence the use feeling of client.
Why diesel oil solidifies at a lower temperature, be due in diesel oil contain a certain amount of wax (i.e. n-alkane), when
When temperature reduces, these waxes can be gradually precipitated, and form wax crystalline substance.With further decreasing for temperature, wax crystalline substance can grow up rapidly, shape
Storage facilities side wall or oil product surface are attached at cere.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of measurement side of diesel oil wax precipitation point
Method influences oil product character to prevent winter oil product analysis wax.
A kind of measuring method for diesel oil wax precipitation point that the present invention mentions, technical solution be the following steps are included:
(1) diesel oil sample cloud point is analyzed；
(2) sample is placed in corresponding thermostated cooling bath according to cloud point, it is 1 DEG C higher than cloud point；
(3) after sample is down to cryostat temperature, observation in every constant temperature 0.5 hour is primary, sees whether sample analyses wax, and a small amount of wax is precipitated in sample
It is sample analysis wax that matter, which is attached to specimen surface,；
(4) 5 hours of sample do not analyse wax, then by thermostated cooling bath temperature lower 1 DEG C, repeat third step, until sample analyse wax, then this
When temperature be the sample wax precipitation point；
(5) if sample analyses wax within 0.5 hour, sample is taken out from cryostat, is preheated to 50 ± 1 DEG C again, then with than
High 2 DEG C of the temperature of last time test temperature re-starts test, so repeats to test, until measuring the wax precipitation point of sample.
Preferably, a kind of measuring method for diesel oil wax precipitation point that the present invention mentions, including step in detailed below:
Step 1: the cloud point of diesel oil sample is analyzed first；
Step 2: if sample has water, needing first to be dehydrated and measure afterwards, hold runny sample dehydration be after desiccant is added,
It is periodically swayed in 10~15 minutes, clarifies part with dry filter paper leaching；
Step 3: pouring into the filtered sample of 200-300ml in the clear vial of dried and clean, and bottle cap sealing is good；It is placed in perseverance
In warm cryostat, cryostat temperature setting is 1 DEG C higher than cloud point；After being down to cryostat temperature to be placed into the sample in thermostated cooling bath, every perseverance
Temperature observation in 0.5 hour is primary, sees whether sample analyses wax, and it is sample analysis wax that sample, which is precipitated a small amount of wax and is attached to specimen surface,；
Step 4: if 5 hours of sample do not analyse wax, thermostated cooling bath temperature is lowered 1 DEG C, repeats third step, until sample is analysed
Wax, temperature at this time are the wax precipitation point of the sample.
Step 5: if sample analyses wax within 0.5 hour, taking out sample from cryostat, be preheated to 50 ± 1 DEG C again,
Then test is re-started with 2 DEG C of temperature higher than last time test temperature, so repeats to test, until measuring the analysis of diesel oil sample
Wax point.
Preferably, the method for the cloud point of the analysis sample in step 1 includes the following:
(1), filtered fuel sample first, then pours into test glass to groove for diesel oil sample；
(2), with the plug stoppered test tube with thermometer；The position for adjusting plug and thermometer, makes plug tightly clog test tube,
And thermometer and test tube are on the same axis, the just accessible test tube bottom of thermometer mercury ball；
(3), keep clean, dry in gasket, washer and casing；Gasket is put into sleeve bottom, before being put into casing, gasket
Cooling medium should be first put at least 10 minutes with casing, can close the lid when empty set pipe is cooling, washer is inserted in test tube, from
Bottom about 25mm, and test tube is inserted into casing, test tube cannot be directly placed into cooling medium；
(4), cryostat temperature is maintained within the scope of 0 DEG C ± 1.5 DEG C；
(5), whenever observing 1 DEG C of the decline of test tube temperature reading, in the case where not stirring sample, test tube is taken out rapidly,
Cloud point is observed, casing is then placed into, whole process is completed and is no more than 3 seconds；
(6), do not occur cloud point also when sample is cooled to 9 DEG C, then test tube immigration temperature is maintained at the second of -18 DEG C ± 1.5 DEG C
In a bath casing, casing cannot be shifted during shifting test tube；If sample, which is cooled to -6 DEG C, does not occur cloud point also, by test tube
It moves into temperature to be maintained in -33 DEG C of ± 1.5 DEG C of third bath casings, in order to measure very low cloud point, needs to increase several cryostats；
(7), when wax crystallization occurs in the test tube bottom of continuous cold, the temperature of recording thermometer is cloud point, reads standard to 1 DEG C.
The beneficial effects of the present invention are: sample diesel oil is placed in the thermostated cooling bath of suitable cryostat temperature by the present invention, observation
Whether sample state can analyse wax with judgement sample under relevant environment, and a small amount of wax of sample precipitation is attached to specimen surface and sentences
It is set to sample analysis wax, the wax precipitation point of the available diesel oil of measuring method of the invention, consequently facilitating prevention winter diesel fuel oil analysis
Wax influences diesel fuel oil character；Furthermore it is also possible to guarantee that the wax precipitation point of diesel oil controls under certain temperature, it is ensured that bavin
Use feeling of the oil under corresponding low temperature is good, is not in analysis wax phenomenon within the scope of predetermined temperature.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of cloud point test instrument of the invention；
Attached drawing 2 is the structural schematic diagram of wax precipitation point analyzer of the invention；
In upper figure: compressor 1, temperature indicator 2, refrigeration switch 3, power switch 4, cryostat slot 5, apparatus subject, wax precipitation point pressure
Contracting machine b1, wax precipitation point temperature indicator b2, wax precipitation point refrigeration switch b3, wax precipitation point power switch b4, wax precipitation point cryostat cavity b5
With wax precipitation point apparatus subject b6.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
A kind of measuring method for diesel oil wax precipitation point that the present invention mentions, comprising the following steps:
Step 1: the cloud point of sample is analyzed first:
1, filtered fuel sample first, then pours into test glass to groove for diesel oil sample；
2, with the plug stoppered test tube with thermometer；The position for adjusting plug and thermometer, makes plug tightly clog test tube, and
Thermometer and test tube on the same axis, the just accessible test tube bottom of thermometer mercury ball；
3, it is all answered in gasket, washer and casing clean, dry；Gasket is put into sleeve bottom；Before being put into casing, gasket and
Casing should first be put into cooling medium at least 10 minutes；It can close the lid when empty set pipe is cooling；Washer is inserted in test tube, the bottom of from
Portion about 25mm, and test tube is inserted into casing, never permit for test tube being directly placed into cooling medium；
4, cryostat temperature is maintained within the scope of 0 DEG C ± 1.5 DEG C；
5, whenever observing 1 DEG C of the decline of test tube temperature reading, in the case where not stirring sample, test tube is taken out rapidly, is seen
Cloud point is examined, casing is then placed into；Whole process is completed to be not to be exceeded 3 seconds；
6, do not occur cloud point also when sample is cooled to 9 DEG C, then test tube immigration temperature is maintained to second of -18 DEG C ± 1.5 DEG C
It bathes in casing, casing cannot be shifted during shifting test tube；If sample, which is cooled to -6 DEG C, does not occur cloud point also, test tube is moved
Enter temperature to be maintained in -33 DEG C of ± 1.5 DEG C of third bath casings；In order to measure very low cloud point, need to increase several cryostats；
7, when wax crystallization occurs in the test tube bottom of continuous cold, recording thermometer temperature is cloud point, reads standard to 1 DEG C；
Step 2: if sample has water, needing to measure after being dehydrated, and holding runny sample dehydration is after desiccant is added, 10
It is periodically swayed in~15 minutes, clarifies part with dry filter paper leaching；
Step 3: pouring into the filtered sample of 200-300ml in the clear vial of dried and clean, and bottle cap sealing is good；It is placed in perseverance
In warm cryostat, cryostat temperature setting is 1 DEG C higher than cloud point；After being down to cryostat temperature to be placed into the sample in thermostated cooling bath, every perseverance
Temperature observation in 0.5 hour is primary, sees whether sample analyses wax, and it is sample analysis wax that sample, which is precipitated a small amount of wax and is attached to specimen surface,；
Step 4: if 5 hours of sample do not analyse wax, thermostated cooling bath temperature is lowered 1 DEG C, repeats third step, until sample is analysed
Wax, temperature at this time are the wax precipitation point of the sample；
Step 5: if sample analyses wax within 0.5 hour, sample is taken out from cryostat, is preheated to 50 ± 1 DEG C again, then
Test is re-started with 2 DEG C of temperature higher than last time test temperature；It so repeats to test, until measuring the analysis wax of diesel oil sample
Point.
By test of many times, following table is obtained, the comparison about wax precipitation point, cold filter plugging point, cloud point in each diesel oil sample
Data.
Table one: the correlation data of diesel oil wax precipitation point and cold filter plugging point, cloud point
Referring to attached drawing 1, the cloud point test instrument that the present invention mentions, including compressor 1, temperature indicator 2, refrigeration switch 3, power supply are opened
It closes 4, cryostat slot 5 and apparatus subject 6 is combined, compressor 1 is equipped in the inner cavity of apparatus subject 6, in the upper of apparatus subject 6
Portion is equipped with the operating platform that temperature indicator 2, refrigeration switch 3, power switch 4 form, and is equipped on the right side of apparatus subject 6 multiple
Cryostat slot 5, the temperature of the 1 job control cryostat slot 5 of compressor.
Wherein, the application method of cloud point analyzer:
Step 1: opening power switch device, opening refrigeration switch.
Step 2: two cloud point analyzers are placed side by side, cryostat temperature is respectively set, one is set as 0 DEG C, and another sets
It is set to -18 DEG C.Instrument starts running after machine to be compressed issues sound.
Step 3: filtered fuel oil product, then pours into test glass to groove for diesel fuel oil.
Step 4: with the plug stoppered test tube with thermometer.The position for adjusting plug and thermometer, fills in plug tightly
Firmly test tube, and thermometer and test tube are on the same axis, the just accessible test tube bottom of thermometer mercury ball.
Step 5: all being answered in gasket, washer and casing clean, dry.Gasket is put into sleeve bottom.Be put into casing it
Before, gasket and casing should first be put into cooling medium at least 10 minutes.It can close the lid when empty set pipe is cooling.Washer is inserted in
Test tube is inserted into casing from bottom about 25mm, and by test tube, never permits for test tube being directly placed into cooling medium.
Step 6: cryostat temperature is maintained within the scope of 0 DEG C ± 1.5 DEG C.
Step 7: whenever observing 1 DEG C of the decline of test tube temperature reading, it, rapidly will examination in the case where not stirring style
Pipe takes out, and observes cloud point, then places into casing.Whole process is completed to be not to be exceeded 3 seconds.
Step 8: not occurring cloud point also when sample is cooled to 9 DEG C, then test tube immigration temperature is maintained at -18 DEG C ± 1.5 DEG C
Second bath casing in, casing cannot be shifted during shifting test tube.If sample, which is cooled to -6 DEG C, does not occur cloud point also,
Test tube immigration temperature is maintained in -33 DEG C of ± 1.5 DEG C of third bath casings.In order to measure very low cloud point, need to increase several
A cryostat.
Step 9: recording thermometer temperature is cloud point when wax crystallization occurs in the test tube bottom of continuous cold, standard is read to 1 DEG C.
Step 10: closing refrigeration switch after cloud point is measured, closing instrument power source.
Referring to attached drawing 2, the wax precipitation point analyzer that the present invention mentions, including wax precipitation point compressor b1, wax precipitation point temperature display
Device b2, wax precipitation point refrigeration switch b3, wax precipitation point power switch b4, wax precipitation point cryostat cavity b5 and wax precipitation point apparatus subject b6,
The inner cavity of wax precipitation point apparatus subject b6 is equipped with wax precipitation point compressor b1, is equipped with wax precipitation point temperature on the top of wax precipitation point apparatus subject b6
The operating platform for spending display b2, wax precipitation point refrigeration switch b3, wax precipitation point power switch b4 composition, in wax precipitation point apparatus subject b6
Middle part be equipped with a wax precipitation point cryostat cavity b5, the temperature of the wax precipitation point compressor b1 job control wax precipitation point cryostat cavity b5
Degree.
The application method for the wax precipitation point analyzer that the present invention mentions, comprising the following steps:
Step 1: opening power switch device, opening refrigeration switch.
Step 2: cryostat temperature setting is 1 DEG C higher than cloud point.Instrument starts running after machine to be compressed issues sound.
Step 3: if sample has water, it is necessary to be measured after dehydration.Hold the dehydration of runny sample be after desiccant is added,
It is periodically swayed in 10~15 minutes, clarifies part with dry filter paper leaching.
Step 4: the filtered sample of about 200-300ml is poured into the clear vial of dried and clean, bottle cap sealing is good.
It is placed in thermostated cooling bath, cryostat temperature setting is 1 DEG C higher than cloud point.Cryostat temperature is down to be placed into the sample in thermostated cooling bath
Afterwards, observation in every constant temperature 0.5 hour is primary, sees whether sample analyses wax, and it is to try that sample, which is precipitated a small amount of wax and is attached to specimen surface,
Sample analyses wax.
Step 5: thermostated cooling bath temperature is lowered 1 DEG C, repeats third step if 5 hours of sample do not analyse wax, until examination
Sample analyses wax, and temperature at this time is the wax precipitation point of the sample.
Step 4: taking out sample from cryostat if sample analyses wax within 0.5 hour, it is preheated to 50 ± 1 DEG C again,
Then test is re-started with 2 DEG C of temperature higher than last time test temperature.It so repeats to test, until measuring the analysis wax of sample
Point.
The above, is only part preferred embodiment of the invention, and anyone skilled in the art may benefit
Equivalent technical solution is modified or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (3)
1. a kind of measuring method of diesel oil wax precipitation point, it is characterized in that the following steps are included:
(1) diesel oil sample cloud point is analyzed；
(2) sample is placed in corresponding thermostated cooling bath according to cloud point, it is 1 DEG C higher than cloud point；
(3) after sample is down to cryostat temperature, observation in every constant temperature 0.5 hour is primary, sees whether sample analyses wax, and a small amount of wax is precipitated in sample
It is sample analysis wax that matter, which is attached to specimen surface,；
(4) 5 hours of sample do not analyse wax, then by thermostated cooling bath temperature lower 1 DEG C, repeat third step, until sample analyse wax, then this
When temperature be the sample wax precipitation point；
(5) if sample analyses wax within 0.5 hour, sample is taken out from cryostat, is preheated to 50 ± 1 DEG C again, then with than
High 2 DEG C of the temperature of last time test temperature re-starts test, so repeats to test, until measuring the wax precipitation point of sample.
2. the measuring method of diesel oil wax precipitation point according to claim 1, it is characterized in that including step in detailed below:
Step 1: the cloud point of diesel oil sample is analyzed first；
Step 2: if sample has water, needing first to be dehydrated and measure afterwards, hold runny sample dehydration be after desiccant is added,
It is periodically swayed in 10~15 minutes, clarifies part with dry filter paper leaching；
Step 3: pouring into the filtered sample of 200-300ml in the clear vial of dried and clean, and bottle cap sealing is good；It is placed in perseverance
In warm cryostat, cryostat temperature setting is 1 DEG C higher than cloud point；After being down to cryostat temperature to be placed into the sample in thermostated cooling bath, every perseverance
Temperature observation in 0.5 hour is primary, sees whether sample analyses wax, and it is sample analysis wax that sample, which is precipitated a small amount of wax and is attached to specimen surface,；
Step 4: if 5 hours of sample do not analyse wax, thermostated cooling bath temperature is lowered 1 DEG C, repeats third step, until sample is analysed
Wax, temperature at this time are the wax precipitation point of the sample；
Step 5: if sample analyses wax within 0.5 hour, sample is taken out from cryostat, is preheated to 50 ± 1 DEG C again, then
Test is re-started with 2 DEG C of temperature higher than last time test temperature, so repeats to test, until measuring the analysis wax of diesel oil sample
Point.
3. the measuring method of diesel oil wax precipitation point according to claim 1 or 2, it is characterized in that analysis sample in step 1
The method of cloud point includes the following:
(1), filtered fuel sample first, then pours into test glass to groove for diesel oil sample；
(2), with the plug stoppered test tube with thermometer；The position for adjusting plug and thermometer, makes plug tightly clog test tube,
And thermometer and test tube are on the same axis, the just accessible test tube bottom of thermometer mercury ball；
(3), keep clean, dry in gasket, washer and casing；Gasket is put into sleeve bottom, before being put into casing, gasket
Cooling medium should be first put at least 10 minutes with casing, can close the lid when empty set pipe is cooling, washer is inserted in test tube, from
Bottom 25mm, and test tube is inserted into casing, test tube cannot be directly placed into cooling medium；
(4), cryostat temperature is maintained within the scope of 0 DEG C ± 1.5 DEG C；
(5), whenever observing 1 DEG C of the decline of test tube temperature reading, in the case where not stirring sample, test tube is taken out rapidly,
Cloud point is observed, casing is then placed into, whole process is completed and is no more than 3 seconds；
(6), do not occur cloud point also when sample is cooled to 9 DEG C, then test tube immigration temperature is maintained at the second of -18 DEG C ± 1.5 DEG C
In a bath casing, casing cannot be shifted during shifting test tube；If sample, which is cooled to -6 DEG C, does not occur cloud point also, by test tube
It moves into temperature to be maintained in -33 DEG C of ± 1.5 DEG C of third bath casings, in order to measure very low cloud point, needs to increase several cryostats；
(7), when wax crystallization occurs in the test tube bottom of continuous cold, the temperature of recording thermometer is cloud point, reads standard to 1 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533489.3A CN109342493A (en) | 2018-12-14 | 2018-12-14 | A kind of measuring method of diesel oil wax precipitation point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533489.3A CN109342493A (en) | 2018-12-14 | 2018-12-14 | A kind of measuring method of diesel oil wax precipitation point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109342493A true CN109342493A (en) | 2019-02-15 |
Family
ID=65303914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811533489.3A Pending CN109342493A (en) | 2018-12-14 | 2018-12-14 | A kind of measuring method of diesel oil wax precipitation point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109342493A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196264A (en) * | 2019-06-05 | 2019-09-03 | 西南石油大学 | A kind of high temperature and pressure condensation air elutriation wax amount test device and method |
| RU2701373C1 (en) * | 2019-06-13 | 2019-09-26 | Федеральное автономное учреждение "25 Государственный научно-исследовательский институт химмотологии Министерства обороны Российской Федерации" | Method for determining maximum temperature for use of diesel fuel |
| CN110646462A (en) * | 2019-09-16 | 2020-01-03 | 中国石油大学(北京) | Crude oil wax precipitation point testing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0920895A (en) * | 1995-07-06 | 1997-01-21 | Idemitsu Kosan Co Ltd | Continuous production of middle cut composition and apparatus therefor |
| US6841779B1 (en) * | 2001-08-24 | 2005-01-11 | University Of Utah Research Foundation | Measurement of wax precipitation temperature and precipitated solid weight percent versus temperature by infrared spectroscopy |
| CN1571926A (en) * | 2001-10-19 | 2005-01-26 | 埃克森美孚研究工程公司 | On-line determination of wax crystallization temperature of waxy solvent stream |
| CN202947981U (en) * | 2012-11-03 | 2013-05-22 | 中国石油化工股份有限公司 | Pourpoint depression effect evaluation device of crude oil pourpoint depressant |
| CN103278524A (en) * | 2013-05-27 | 2013-09-04 | 广西启利新材料科技股份有限公司 | Measurement method for phase-change temperature of compound paraffin phase-change material |
| CN104880481A (en) * | 2015-06-08 | 2015-09-02 | 中国石油大学(北京) | Equipment and method for measuring temperature of wax precipitation point of crude oil |
| CN105334145A (en) * | 2015-12-03 | 2016-02-17 | 中国石油大学(北京) | Wax deposition experimental device and method |
| CN206710347U (en) * | 2017-04-29 | 2017-12-05 | 西南石油大学 | A kind of simple laser tests wax precipitation point experiment instrument |
-
2018
- 2018-12-14 CN CN201811533489.3A patent/CN109342493A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0920895A (en) * | 1995-07-06 | 1997-01-21 | Idemitsu Kosan Co Ltd | Continuous production of middle cut composition and apparatus therefor |
| US6841779B1 (en) * | 2001-08-24 | 2005-01-11 | University Of Utah Research Foundation | Measurement of wax precipitation temperature and precipitated solid weight percent versus temperature by infrared spectroscopy |
| CN1571926A (en) * | 2001-10-19 | 2005-01-26 | 埃克森美孚研究工程公司 | On-line determination of wax crystallization temperature of waxy solvent stream |
| CN202947981U (en) * | 2012-11-03 | 2013-05-22 | 中国石油化工股份有限公司 | Pourpoint depression effect evaluation device of crude oil pourpoint depressant |
| CN103278524A (en) * | 2013-05-27 | 2013-09-04 | 广西启利新材料科技股份有限公司 | Measurement method for phase-change temperature of compound paraffin phase-change material |
| CN104880481A (en) * | 2015-06-08 | 2015-09-02 | 中国石油大学(北京) | Equipment and method for measuring temperature of wax precipitation point of crude oil |
| CN105334145A (en) * | 2015-12-03 | 2016-02-17 | 中国石油大学(北京) | Wax deposition experimental device and method |
| CN206710347U (en) * | 2017-04-29 | 2017-12-05 | 西南石油大学 | A kind of simple laser tests wax precipitation point experiment instrument |
Non-Patent Citations (3)
| Title |
|---|
| 何伟 等: "含蜡原油析蜡点测试方法综述", 《当代化工》 * |
| 沈本贤 主编: "《化工类油气储运工程专业实验》", 31 July 2014, 华东理工大学出版社 * |
| 石晶，段敏主编: "《汽车实验教程 下》", 31 July 2013, 东北大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196264A (en) * | 2019-06-05 | 2019-09-03 | 西南石油大学 | A kind of high temperature and pressure condensation air elutriation wax amount test device and method |
| CN110196264B (en) * | 2019-06-05 | 2020-12-04 | 西南石油大学 | Device and method for testing high-temperature and high-pressure condensate gas wax yield |
| RU2701373C1 (en) * | 2019-06-13 | 2019-09-26 | Федеральное автономное учреждение "25 Государственный научно-исследовательский институт химмотологии Министерства обороны Российской Федерации" | Method for determining maximum temperature for use of diesel fuel |
| CN110646462A (en) * | 2019-09-16 | 2020-01-03 | 中国石油大学(北京) | Crude oil wax precipitation point testing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109342493A (en) | A kind of measuring method of diesel oil wax precipitation point | |
| US20130226517A1 (en) | Method of Testing Moisture Retention of Tobacco | |
| CN109580702B (en) | Method for measuring uniform temperature and freezing point temperature of fluid inclusion | |
| CN109283273A (en) | A kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system and its measuring method | |
| CN109883937A (en) | A kind of test device and method of the top part corrosion behavior of high temperature and pressure Wet gas line | |
| CN104062201A (en) | Experimental device for measuring technological parameters of vacuum drying and vacuum freeze drying processes | |
| Vitkovskii et al. | Development of a standard system for metrological assurance of measurements of the pressure of saturated vapors of petroleum and petroleum products | |
| CA2172689C (en) | Method and apparatus for determining the wax appearance temperature of paraffinic petroleum oils | |
| CN109085112A (en) | Method and device for measuring permeability of compact rock sample | |
| US2564892A (en) | Viscosimeter | |
| CN204649346U (en) | A kind of integrated hold-up vapour pressure and latent heat of vaporization combined test system | |
| RU2406087C1 (en) | Method of determining temperature stability of lubrication oil | |
| US20230366798A1 (en) | Analytical apparatus | |
| CN106596902B (en) | Portable full-automatic petroleum product hydrogen sulfide tester | |
| CA2017793C (en) | Method and apparatus for determining low temperature performance of a wax containing fuel | |
| US4510060A (en) | Measurement of bs&w in crude oil streams | |
| CN212845130U (en) | Condensation point testing device | |
| CN102565128B (en) | Flash point standard substance | |
| CN107976589A (en) | A kind of quasi-static d33 tests system of width temperature range | |
| CN209198273U (en) | Permeability measuring device for compact rock sample | |
| RU2701373C1 (en) | Method for determining maximum temperature for use of diesel fuel | |
| CN108613756A (en) | A kind of method of temperature classes test mass control | |
| CN117688272B (en) | Condensate recovery ratio calculation method for unbalanced mist reverse condensate | |
| RU2799039C1 (en) | Laboratory facility for determination of fluid content in samples of hydrocarbon reservoir rocks | |
| SU1723508A1 (en) | Method of determination of diesel fuel freezing temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |
|
| RJ01 | Rejection of invention patent application after publication |