CN106706745A - Measuring device and measuring method of water content in coal liquefaction oil product - Google Patents
Measuring device and measuring method of water content in coal liquefaction oil product Download PDFInfo
- Publication number
- CN106706745A CN106706745A CN201710088585.0A CN201710088585A CN106706745A CN 106706745 A CN106706745 A CN 106706745A CN 201710088585 A CN201710088585 A CN 201710088585A CN 106706745 A CN106706745 A CN 106706745A
- Authority
- CN
- China
- Prior art keywords
- oil product
- coal liquefaction
- liquefaction oil
- moisture
- water
- 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
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/42—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
- G01N27/423—Coulometry
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention provides a measuring device and measuring method of the water content in a coal liquefaction oil product. The measuring device comprises a head space bottle, a water titration device and a head space furnace, wherein the head space furnace is used for heating the head space bottle; the head space bottle is provided with a coal liquefaction oil product water release gas outlet; the water titration device is provided with a coal liquefaction oil product water release gas inlet; the coal liquefaction oil product water release gas inlet communicates with the coal liquefaction oil product water release gas outlet through a gas conveying pipeline; in addition, a circulation gas outlet is connected with a circulation gas inlet. The measuring device has the advantages that the coal liquefaction oil product is charged into the head space bottle with high sealing performance to be heated; the water in the oil product can be released; the formed water release gas enters the water titration device through the coal liquefaction oil product water release gas outlet so as to complete the water titration. The coal liquefaction oil product is heated under the sealed condition, so that the water is gasified; the water measurement is further performed; the water can be sufficiently released from the oil product restriction, so that the measurement accuracy is improved.
Description
Technical field
The present invention relates to coal liquefaction oil product reclaimed water point assay field, in particular in a kind of coal liquefaction oil product
The measurement apparatus and measuring method of moisture.
Background technology
Water-in-oil detection is the important indicator of oil product basic property detection, and the presence of water content in oil pollutant can accelerate oil
The deterioration of product properties, reduces the service life of equipment, and the normal operation to equipment constitutes a serious threat.Such as, in oil product
Moisture can accelerate oxidation and the rubber of oil product, cause corrosion；Evaporation can take away heat, make the reduction of oil product caloric value；Moisture exists
Increase weight during transportation；Energy etc. is wasted in reprocessing.The number of coal liquefaction oil product moisture is directly affected to be received
The storge quality of the property indices of oil equipment and related liquefaction oil product.Therefore, moisture is used as normal in coal liquefaction oil product
One of physical and chemical index, its assay turn into quality testing in must survey project, especially in aviation fuels, moisture
It is as one of important Con trolling index.
At present, the measure of coal liquefaction oil product reclaimed water point content generally uses traditional oil product aquametry, the party
Time-consuming for method, solvent load big, big to operating personnel and ambient influnence, and because solvent refluxing speed is difficult to control to, analyzes number
It is poor according to collimation.
The content of the invention
It is a primary object of the present invention to provide a kind of measurement apparatus and measuring method of the oil product reclaimed water point content that liquefies, with
Solve the problems, such as that coal liquefaction oil product determination of moisture accuracy is poor in the prior art.
To achieve these goals, according to an aspect of the invention, there is provided a kind of coal liquefaction oil product reclaimed water point content
Measurement apparatus, it includes：Ml headspace bottle, is provided with circulating air entrance and the outlet of coal liquefaction oil product water release gas；Moisture is titrated
Device, is provided with circulating air outlet and coal liquefaction oil product water release gas entrance, coal liquefaction oil product water release gas entrance and coal
Liquefaction oil product water release gas outlet is connected by gas transfer pipeline, and circulating air outlet is connected with circulating air entrance；And it is right
The head space stove that ml headspace bottle is heated.
Further, moisture titration outfit is karl Fischer coulomb method titration outfit.
Further, also including carrier gas feeding mechanism, carrier gas outlet is provided with carrier gas feeding mechanism, carrier gas outlet is gentle
Body transfer pipeline is connected.
Further, measurement apparatus also include membrane pump, and membrane pump is arranged on carrier gas outlet and is connected with gas transfer pipeline
Stream on.
According to another aspect of the present invention, there is provided a kind of measuring method of coal liquefaction oil product reclaimed water point content, it includes
Following steps：By the heating of coal liquefaction oil product, coal liquefaction oil product water release gas is obtained；By coal liquefaction oil product water release gas close
Moisture titration outfit is delivered under envelope state carries out determination of moisture；And return unabsorbed gas in moisture titration outfit
It is back to and heating is circulated at coal liquefaction oil product.
Further, coal liquefaction oil product is heated in ml headspace bottle, obtains coal liquefaction oil product water release gas.
Further, in the step of coal liquefaction oil product being heated, heating-up temperature be room temperature~280 DEG C, preferably 100~
160℃。
Further, coal liquefaction oil product water release gas is delivered into moisture titration outfit using carrier gas carries out moisture
Determine.
Further, carrier gas is air.
Further, moisture titration outfit is karl Fischer coulomb method titration outfit.
In above-mentioned measurement apparatus provided by the present invention, coal liquefaction oil product is fitted into sealing property ml headspace bottle higher
After row heating, the moisture in oil product can be released, and the water release gas of formation is gone out by coal liquefaction oil product water release gas
Mouth enters moisture titration outfit and completes moisture titration.Oil product is directly surveyed in liquid form compared in traditional handicraft
Amount, carries out coal liquefaction oil product under conditions of closed in the present invention after heating makes moisture vaporization, further to carry out moisture measurement,
Moisture can be made more fully to be spun off from the confinement of oil product such that it is able to improve the accuracy of measurement.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Fig. 1 shows a kind of liquefaction oil product reclaimed water point content that a kind of typical implementation method of the invention is provided
The structural representation of measurement apparatus.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As described by background technology, it is poor to there is accuracy in existing coal liquefaction oil product determination of moisture method
Problem.In order to solve this problem, the invention provides a kind of measurement apparatus of coal liquefaction oil product reclaimed water point content, such as Fig. 1 institutes
Show, it includes ml headspace bottle 10, moisture titration outfit 20 and is used to the head space stove heated to ml headspace bottle 10, and ml headspace bottle 10 sets
It is equipped with the outlet of coal liquefaction oil product water release gas；Moisture titration outfit 20 is provided with coal liquefaction oil product water release gas entrance, coal
Liquefaction oil product water release gas entrance is connected with the outlet of coal liquefaction oil product water release gas by gas transfer pipeline, and circulation
Gas outlet is connected with circulating air entrance.
In above-mentioned measurement apparatus provided by the present invention, coal liquefaction oil product is fitted into sealing property ml headspace bottle 10 higher
After being heated, the moisture in oil product can be released, and the water release gas of formation passes through coal liquefaction oil product water release gas
Outlet enters moisture titration outfit 20 and completes moisture titration.Oil product is directly carried out in liquid form compared in traditional handicraft
Measurement, carries out coal liquefaction oil product under conditions of closed in the present invention after heating makes moisture vaporization, further to carry out moisture survey
Amount, can make moisture more fully be spun off from the confinement of oil product such that it is able to improve the accuracy of measurement.Meanwhile, make
Moisture conveying is measured by the way of heating with the device, minute is short, solvent load is few, reproducible, in a word
The moisture in coal liquefaction oil product can accurately and rapidly be determined.Additionally, to behaviour during measurement apparatus measurement moisture
The harm for making personnel is small, low to the pollution of environment.Water release gas described herein refers to just actually the moisture warp in oil product
The steam being thermally formed, certainly, has a small amount of oil product and gasifies in the lump and be contained in steam, but due to using ml headspace bottle 10 so that
After moisture is distilled out of in oil product, other impurities are distilled out of simultaneously except a small amount of, and remaining has all been stayed in ml headspace bottle 10.
Especially, circulating air outlet is connected with circulating air entrance, and this allows for not absorbed in moisture titration outfit 20
Carrier gas return the inner recycling of ml headspace bottle 10, whole gas circuit is complete closed cycle, the moisture for now containing in system, quilt
Drop reaction is constantly consumed.Without external moisture supplement in the case of, in system moisture end reaction to cannot continue react
Concentration." Yu Qishuo release ", as it is " consumption ".And it is that measured object using another big benefit of ml headspace bottle 10
Middle moisture is distilled out of, and other impurities are distilled out of simultaneously except a small amount of, and remaining has all been stayed in ml headspace bottle, the influence to the reagent life-span
Also just fall below minimum.
In a preferred embodiment, moisture titration outfit 20 is karl Fischer coulomb method titration outfit.Coulometry
It is that based on after sample is dissolved in into the electrolyte of the special solvent containing a certain amount of iodine, water is exhaustion point, but required iodine is no longer
Titrated containing iodine reagent with calibrated, but make the iodide ion in solution be iodine in anodic oxidation by electrolytic process.
Produced iodine reacts with the water in sample again.Therefore, measurement result is more accurate.Preferably, titration end-point two-wave interpretation
Indicate, when iodine concentration returns to original concentration in electrolyte, stop electrolysis.
In a preferred embodiment, above-mentioned measurement apparatus also include carrier gas feeding mechanism 30, and it is provided with carrier gas
Outlet, carrier gas outlet is connected with gas transfer pipeline.Water release gas more fully can be delivered into moisture using carrier gas to drip
Determine to be titrated in device 20.Preferably, measurement apparatus also include membrane pump, and membrane pump is arranged on carrier gas outlet and above-mentioned gas
On the connected stream of transfer pipeline.Carrier gas flux can be adjusted using air pump, so that continuous mode is more stablized.
In addition, present invention also offers a kind of measuring method of coal liquefaction oil product reclaimed water point content, it is comprised the following steps：
By the heating of coal liquefaction oil product, coal liquefaction oil product water release gas is obtained；
Coal liquefaction oil product water release gas is delivered into moisture titration outfit in sealed states carries out determination of moisture；
And
Unabsorbed gas in moisture titration outfit is back to heating is circulated at coal liquefaction oil product.
In above-mentioned measuring method, after now coal liquefaction oil product is heated, then water release gas is delivered in sealed states
Moisture titration outfit carries out determination of moisture.As it was noted above, compared in traditional handicraft that oil product is straight in liquid form
Connect and measure, coal liquefaction oil product after heating makes moisture vaporization under conditions of closed, is further carried out into moisture in the present invention
Measurement, can make moisture more fully be spun off from the confinement of oil product such that it is able to improve the accuracy of measurement.Additionally,
See that water release gas is delivered to moisture titration outfit in sealed states, the accuracy of measurement can be further ensured that.Meanwhile, will
Unabsorbed gas is back to and heating is circulated at coal liquefaction oil product in moisture titration outfit, and whole gas circuit is complete closed circuit
Circulation, the moisture for now containing in system is titrated reaction constantly consumption.In the case where being supplemented without external moisture, system
Interior moisture end reaction to cannot continue reaction concentration." Yu Qishuo release ", as it is " consumption ".
It is highly preferred that coal liquefaction oil product is heated in ml headspace bottle, coal liquefaction oil product water release gas is obtained.Ml headspace bottle
Sealing is higher, is conducive to improving the sealing of whole gas circuit using it.Meanwhile, can make what moisture was distilled out of using ml headspace bottle
Meanwhile, the impurity such as oil product being distilled out of with moisture is less such that it is able to reduce its aging effects to later stage titer reagent.And
Moisture is distilled out of in being that measured object using another big benefit of ml headspace bottle, and other impurities are distilled out of simultaneously except a small amount of, its
Remaining all to have stayed in ml headspace bottle, the influence to the reagent life-span also just falls below minimum.
According to different coal liquefaction oil products, those skilled in the art can select specific heating-up temperature.A kind of preferred
Implementation method in, heating-up temperature be room temperature~280 DEG C, be preferably heated to 100~160 DEG C.The temperature is conducive to filling for moisture
Divide gasification, while measured matter can also be made to produce certain constitutive activation, so as to further improve measurement stability.
In a preferred embodiment, coal liquefaction oil product water release gas is delivered to moisture titration dress using carrier gas
Putting carries out determination of moisture.More fully water release gas can be delivered in moisture titration outfit using carrier gas and be dripped
It is fixed.Preferably, carrier gas is air.
In a preferred embodiment, moisture titration outfit is karl Fischer coulomb method titration outfit.Coulometry is
After sample is dissolved in into the electrolyte of the special solvent containing a certain amount of iodine, water is exhaustion point, but required iodine is no longer to use
Calibrated is titrated containing iodine reagent, but makes the iodide ion in solution be iodine in anodic oxidation by electrolytic process.Institute
The iodine of generation reacts with the water in sample again.Therefore, measurement result is more accurate.
Coal liquefaction oil product in the present invention includes but is not limited to coal direct liquefaction oil, coal etc..Coal is by coal
First wear into a kind of oil product that coal dust mixes and is made into solvent naphtha.
Beneficial effects of the present invention are further illustrated by the following examples：
Sample number into spectrum：Certain DCL/Direct coal liquefaction hydrogenating materials oil samples is A；Certain DCL/Direct coal liquefaction stabilized hydrogenation oil samples is B；
Low point of oil samples of certain DCL/Direct coal liquefaction are C, and 0.1% standard water sample is that (it is standard oil that standard water sample is actual to D, and water content is
0.1%).Using the measurement apparatus of the liquefaction oil product reclaimed water point content shown in Fig. 1 of the present invention to different samples in embodiment 1 to 4
Moisture be measured：
Embodiment 1
Weigh A0.5708g to be placed in closed container, 120 DEG C of temperature, analysis time is 10min, and moisture is in A
0.28%.
Embodiment 2
Weigh B 0.5507g to be placed in closed container, 120 DEG C of temperature, analysis time is 10min, and moisture is in B
0.08%.
Embodiment 3
Weigh C 0.5062g to be placed in closed container, 120 DEG C of temperature, analysis time is 10min, and moisture is in C
0.19%.
Embodiment 4
Weigh D 0.5027g to be placed in closed container, 120 DEG C of temperature, analysis time is 10min, and moisture is in D
0.1%.
From above-mentioned data, in the measurement apparatus measurement oil product of the liquefaction oil product reclaimed water point content provided using the present invention
Moisture, its measurement result is accurate.
In sum, in measurement apparatus provided by the present invention, the measurement for the moisture in coal liquefaction oil product is accurate
True property is higher.Meanwhile, moisture conveying is measured by the way of heating using the device, minute is short, solvent load
Less, it is reproducible, the moisture in coal liquefaction oil product can be accurately and rapidly determined in a word.Additionally, the measurement apparatus are surveyed
Harm during amount moisture to operating personnel is small, low to the pollution of environment.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of coal liquefaction oil product reclaimed water divides the measurement apparatus of content, it is characterised in that including：
Ml headspace bottle (10), is provided with circulating air entrance and the outlet of coal liquefaction oil product water release gas；
Moisture titration outfit (20), is provided with circulating air outlet and coal liquefaction oil product water release gas entrance, the liquefied coal coil
Product water release gas entrance is connected with coal liquefaction oil product water release gas outlet by gas transfer pipeline, the circulating air
Outlet is connected with the circulating air entrance；And
The head space stove heated to the ml headspace bottle (10).
2. measurement apparatus according to claim 1, it is characterised in that the moisture titration outfit (20) is karl Fischer storehouse
Human relations method titration outfit.
3. measurement apparatus according to claim 1 and 2, it is characterised in that the measurement apparatus also include that dress is supplied in carrier gas
Put (30), carrier gas outlet, the carrier gas outlet and the gas transfer pipeline phase are provided with the carrier gas feeding mechanism (30)
Even.
4. measurement apparatus according to claim 3, it is characterised in that the measurement apparatus also include membrane pump, it is described every
Membrane pump is arranged on the stream that the carrier gas outlet is connected with the gas transfer pipeline.
5. a kind of coal liquefaction oil product reclaimed water divides the measuring method of content, it is characterised in that comprise the following steps：
By coal liquefaction oil product heating, coal liquefaction oil product water release gas is obtained；
The coal liquefaction oil product water release gas is delivered into moisture titration outfit in sealed states carries out determination of moisture；
And
Unabsorbed gas in the moisture titration outfit is back at the coal liquefaction oil product and is circulated heating.
6. measuring method according to claim 5, it is characterised in that the coal liquefaction oil product is heated in ml headspace bottle,
Obtain the coal liquefaction oil product water release gas.
7. measuring method according to claim 6, it is characterised in that in the step of heating the coal liquefaction oil product, plus
Hot temperature is room temperature~280 DEG C, preferably 100~160 DEG C.
8. the measuring method according to any one of claim 5 to 7, it is characterised in that using carrier gas by the coal liquefaction
Water-in-oil release gas is delivered to the moisture titration outfit carries out determination of moisture.
9. measuring method according to claim 8, it is characterised in that the carrier gas is air.
10. the measuring method according to any one of claim 5 to 7, it is characterised in that the moisture titration outfit is card
Er Feixiu coulombs of method titration outfit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088585.0A CN106706745A (en) | 2017-02-17 | 2017-02-17 | Measuring device and measuring method of water content in coal liquefaction oil product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088585.0A CN106706745A (en) | 2017-02-17 | 2017-02-17 | Measuring device and measuring method of water content in coal liquefaction oil product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706745A true CN106706745A (en) | 2017-05-24 |
Family
ID=58911818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710088585.0A Pending CN106706745A (en) | 2017-02-17 | 2017-02-17 | Measuring device and measuring method of water content in coal liquefaction oil product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106706745A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507268A (en) * | 2018-12-12 | 2019-03-22 | 中国航发控制系统研究所 | A kind of micro free water content analysis method in aviation kerosine |
| CN109598915A (en) * | 2018-11-23 | 2019-04-09 | 山东东山新驿煤矿有限公司 | A kind of intelligent monitor system of coal water content |
| CN110596354A (en) * | 2019-11-04 | 2019-12-20 | 云南电网有限责任公司电力科学研究院 | Device and method for detecting moisture content in hydrogen oil |
| CN110608973A (en) * | 2019-10-25 | 2019-12-24 | 云南电网有限责任公司电力科学研究院 | Device and method for detecting moisture content in hydrogen oil |
| CN110806394A (en) * | 2019-11-27 | 2020-02-18 | 云南电网有限责任公司电力科学研究院 | Method and device for detecting moisture content in hydrogen oil by infrared spectroscopy |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036774A (en) * | 2007-04-17 | 2007-09-19 | 贵州益佰制药股份有限公司 | Quality control method of compound cantharidin oral preparations |
| CN101403732A (en) * | 2008-11-19 | 2009-04-08 | 河北大学 | Gas-chromatography static top hollow column dead temperature-control pressure-difference sampling apparatus |
| CN202845386U (en) * | 2012-09-29 | 2013-04-03 | 北京北分天普仪器技术有限公司 | Flow system for seal pipeline forward and reverse cleaning |
| CN103674756A (en) * | 2013-12-13 | 2014-03-26 | 神华集团有限责任公司 | Method for measuring content of moisture in high pressure liquid phase hydrocarbon substance |
| CN103675080A (en) * | 2012-09-13 | 2014-03-26 | 中国科学院大连化学物理研究所 | Headspace sampler and ion mobility spectrometry combined system |
| CN103868980A (en) * | 2012-12-12 | 2014-06-18 | 中国科学院大连化学物理研究所 | Application of doping agent in test of phthalic acid ester compounds by use of ion mobility spectrometry |
| CN104502487A (en) * | 2014-12-29 | 2015-04-08 | 通标标准技术服务(上海)有限公司 | Method for determining chloromethyl methyl ether in automotive materials |
| CN104569113A (en) * | 2015-01-27 | 2015-04-29 | 上海化工研究院 | Hot gas flow dissociation dewatering indirect Karl-Fischer-process analysis device |
| CN104865245A (en) * | 2015-04-29 | 2015-08-26 | 四川省中药饮片有限责任公司 | Method for determining sulfur dioxide in amygdalin contained traditional Chinese medicine and slices thereof |
| CN104931634A (en) * | 2015-06-16 | 2015-09-23 | 武汉光谷人福生物医药有限公司 | Method for detecting large-hole adsorbent resin organic matter residues in desmodium styracifolium general flavone extractive with headspace gas chromatography |
| CN105004782A (en) * | 2015-07-13 | 2015-10-28 | 天津出入境检验检疫局动植物与食品检测中心 | Method for fast detecting fumigation agent bromomethane residues in foods by headspace sample injection and ion mobility spectrometry |
| CN105277653A (en) * | 2014-06-25 | 2016-01-27 | 上海宝钢化工有限公司 | Method for detecting moisture content of viscous oil |
| CN105572244A (en) * | 2015-12-10 | 2016-05-11 | 江汉大学 | Method for determining residual methylbenzene and residual ethyl acetate in methyl vinyl ether-maleic anhydride copolymer |
-
2017
- 2017-02-17 CN CN201710088585.0A patent/CN106706745A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036774A (en) * | 2007-04-17 | 2007-09-19 | 贵州益佰制药股份有限公司 | Quality control method of compound cantharidin oral preparations |
| CN101403732A (en) * | 2008-11-19 | 2009-04-08 | 河北大学 | Gas-chromatography static top hollow column dead temperature-control pressure-difference sampling apparatus |
| CN103675080A (en) * | 2012-09-13 | 2014-03-26 | 中国科学院大连化学物理研究所 | Headspace sampler and ion mobility spectrometry combined system |
| CN202845386U (en) * | 2012-09-29 | 2013-04-03 | 北京北分天普仪器技术有限公司 | Flow system for seal pipeline forward and reverse cleaning |
| CN103868980A (en) * | 2012-12-12 | 2014-06-18 | 中国科学院大连化学物理研究所 | Application of doping agent in test of phthalic acid ester compounds by use of ion mobility spectrometry |
| CN103674756A (en) * | 2013-12-13 | 2014-03-26 | 神华集团有限责任公司 | Method for measuring content of moisture in high pressure liquid phase hydrocarbon substance |
| CN105277653A (en) * | 2014-06-25 | 2016-01-27 | 上海宝钢化工有限公司 | Method for detecting moisture content of viscous oil |
| CN104502487A (en) * | 2014-12-29 | 2015-04-08 | 通标标准技术服务(上海)有限公司 | Method for determining chloromethyl methyl ether in automotive materials |
| CN104569113A (en) * | 2015-01-27 | 2015-04-29 | 上海化工研究院 | Hot gas flow dissociation dewatering indirect Karl-Fischer-process analysis device |
| CN104865245A (en) * | 2015-04-29 | 2015-08-26 | 四川省中药饮片有限责任公司 | Method for determining sulfur dioxide in amygdalin contained traditional Chinese medicine and slices thereof |
| CN104931634A (en) * | 2015-06-16 | 2015-09-23 | 武汉光谷人福生物医药有限公司 | Method for detecting large-hole adsorbent resin organic matter residues in desmodium styracifolium general flavone extractive with headspace gas chromatography |
| CN105004782A (en) * | 2015-07-13 | 2015-10-28 | 天津出入境检验检疫局动植物与食品检测中心 | Method for fast detecting fumigation agent bromomethane residues in foods by headspace sample injection and ion mobility spectrometry |
| CN105572244A (en) * | 2015-12-10 | 2016-05-11 | 江汉大学 | Method for determining residual methylbenzene and residual ethyl acetate in methyl vinyl ether-maleic anhydride copolymer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109598915A (en) * | 2018-11-23 | 2019-04-09 | 山东东山新驿煤矿有限公司 | A kind of intelligent monitor system of coal water content |
| CN109507268A (en) * | 2018-12-12 | 2019-03-22 | 中国航发控制系统研究所 | A kind of micro free water content analysis method in aviation kerosine |
| CN110608973A (en) * | 2019-10-25 | 2019-12-24 | 云南电网有限责任公司电力科学研究院 | Device and method for detecting moisture content in hydrogen oil |
| CN110596354A (en) * | 2019-11-04 | 2019-12-20 | 云南电网有限责任公司电力科学研究院 | Device and method for detecting moisture content in hydrogen oil |
| CN110806394A (en) * | 2019-11-27 | 2020-02-18 | 云南电网有限责任公司电力科学研究院 | Method and device for detecting moisture content in hydrogen oil by infrared spectroscopy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106706745A (en) | Measuring device and measuring method of water content in coal liquefaction oil product | |
| CN103207127B (en) | Measure the device of sour gas equilbrium solubility in alkaline absorption solution | |
| CN104849434B (en) | System for calibrating accuracy of instrument for detecting gas dissolved in oil | |
| AU2018437833B2 (en) | Method employing an experiment to measure shortest spontaneous combustion period of coal | |
| CN203216814U (en) | Device for determining equilibrium solubility of acidic gas in alkaline absorption liquid | |
| CN106769637A (en) | Explosive storage life assesses test system and detection method | |
| CN101995445A (en) | Method for detecting nitrogen in organic fertilizer | |
| CN102252885B (en) | Preparation method of water content standard material | |
| CN101788452B (en) | Dynamic corrosion test method and equipment thereof | |
| CN111044560A (en) | Method for rapidly evaluating service life of atomic gas chamber | |
| CN105784701B (en) | A kind of nitrocotton nitrogen content test macro and nitrogenous quantity measuring method | |
| US20190273275A1 (en) | Systems and methods for forming a liquid mixture having a predetermined mix ratio and reforming systems, reforming methods, fuel cell systems, and fuel cell methods that utilize the liquid mixture | |
| CN101196457A (en) | Gas analyzer | |
| CN109708943B (en) | Preparation method of trichlorobromomethane gas standard substance in nitrogen | |
| CN103674756A (en) | Method for measuring content of moisture in high pressure liquid phase hydrocarbon substance | |
| CN107545810B (en) | A kind of experimental provision for studying different liquid level depth pond fire combustion characteristics | |
| CN111289686A (en) | Method for measuring content of residual alkali in solution and application thereof | |
| CN110470800A (en) | A kind of air distribution system and method for NOx sensor calibration | |
| CN105717252A (en) | Determination method for chlorine in coal | |
| CN109884218A (en) | The preparation facilities and method of arsine gas standard substance in a kind of nitrogen | |
| CN113984951A (en) | Method for testing moisture content of gear oil | |
| CN107367554A (en) | A kind of method of content of fatty acid in measure dairy products | |
| CN209537394U (en) | Laboratory pitch automatic filling device | |
| CN111239331A (en) | Method for detecting content of calcium oxide in quick lime | |
| CN110716007A (en) | Method and system for measuring content of volatile organic acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |