SU320772A1 - - Google Patents
Info
- Publication number
- SU320772A1 SU320772A1 SU1292116A SU1292116A SU320772A1 SU 320772 A1 SU320772 A1 SU 320772A1 SU 1292116 A SU1292116 A SU 1292116A SU 1292116 A SU1292116 A SU 1292116A SU 320772 A1 SU320772 A1 SU 320772A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- oil
- sample
- hydrogen sulfide
- silver nitrate
- chlorides
- Prior art date
Links
- SQGYOTSLMSWVJD-UHFFFAOYSA-N Silver nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 6
- 229910001961 silver nitrate Inorganic materials 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N iso-propanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Description
СПОСОБ АВТОМАТИЧЕСКОГО ОПРЕДЕЛЕНИЯ ХЛОРИДОВMETHOD FOR AUTOMATIC DETERMINATION OF CHLORIDE
Изобретение относитс к способам автоматического определени хлоридов в нефт х, содержащих сероводород, и может быть использовано , в частности, при непрерывном контроле нефти-в потоке на магистральных нефтепроводах .The invention relates to methods for the automatic determination of chlorides in oils containing hydrogen sulfide, and can be used, in particular, with continuous monitoring of oil-in-flow on main oil pipelines.
Известен способ определени хлоридов в нефт х, при котором раствор ют пробу нефти в спирто-бензольной смеси и титруют спиртовым раствором нитрата серебра, причем в качестве индикаторного электрода используют серебр ный электрод.A known method for determining chlorides in petroleum is one in which a sample of oil is dissolved in an alcohol-benzene mixture and titrated with an alcohol solution of silver nitrate, with a silver electrode being used as the indicator electrode.
С целью устранени длительного дрейфа потенциала индикаторного электрода по предлагаемому способу предварительно нейтрализуют сероводород в момент растворени пробы нефти добавлением к растворителю нитрата серебра в количестве, эквивалентном содержанию сероводорода в пробе.In order to eliminate the long-term drift of the potential of the indicator electrode according to the proposed method, hydrogen sulfide is preliminarily neutralized at the time of oil sample dissolution by adding silver nitrate to the solvent in an amount equivalent to the hydrogen sulfide content in the sample.
Пример. Пробу нефти нагревают до 60-70°С в течение 10 мин. Затем отбирают 1-2 мл нефти и раствор ют в 50 мл раствоВ НЕФТЯХExample. The oil sample is heated to 60-70 ° C for 10 minutes. Then, 1-2 ml of oil are taken and dissolved in 50 ml of NON OILS
рител следующего состава (на 1 л): изопропиловый спирт 300 мл, азотна кислота 6 мл, 0,01 н. раствор нитрата серебра в изопропиловом спирте 2 мл, бензол - остальное. Через 2-3 ми после растворени нефти титруют до определенного потенциала.The following composition (per 1 liter): isopropyl alcohol 300 ml, nitric acid 6 ml, 0.01 n. silver nitrate solution in isopropyl alcohol 2 ml, benzene - the rest. After 2-3 minutes after dissolution, the oil is titrated to a certain potential.
Предмет изобретени Subject invention
10ten
Способ автоматического определени хлоридов в нефт х, содержащих сероводород, путем растворени пробы нефти с последующим титрованием раствором нитрата серебра потенциометрическим неводным методом, отличающийс тем, что, с целью устранени длительного дрейфа потенциала индикаторного электрода, предварительно нейтрализуют сероводород в момент растворени пробы нефги добавлением к растворителю нитрата серебра в количестве, эквивалентном содержанию сероводорода в пробе.A method for automatically detecting chlorides in oils containing hydrogen sulfide by dissolving an oil sample followed by titration with a silver nitrate solution by a potentiometric non-aqueous method, characterized in that, in order to eliminate the long-term drift of the potential of the indicator electrode, the hydrogen sulfide is previously neutralized at the moment of dissolution of the sample by adding to the solvent silver nitrate in an amount equivalent to the hydrogen sulfide content in the sample.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU320772A1 true SU320772A1 (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009123496A1 (en) * | 2008-04-03 | 2009-10-08 | Ог Системз Лимитед | Method and device for measuring impurities in oil and petroleum products |
| RU2457475C2 (en) * | 2008-04-03 | 2012-07-27 | Ог Системз Лимитед | Method and apparatus for determining impurities in oil and oil products |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009123496A1 (en) * | 2008-04-03 | 2009-10-08 | Ог Системз Лимитед | Method and device for measuring impurities in oil and petroleum products |
| RU2457475C2 (en) * | 2008-04-03 | 2012-07-27 | Ог Системз Лимитед | Method and apparatus for determining impurities in oil and oil products |
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