CN103558334A - Detection method of hydrogen sulfide - Google Patents
Detection method of hydrogen sulfide Download PDFInfo
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- CN103558334A CN103558334A CN201310534053.7A CN201310534053A CN103558334A CN 103558334 A CN103558334 A CN 103558334A CN 201310534053 A CN201310534053 A CN 201310534053A CN 103558334 A CN103558334 A CN 103558334A
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- crude oil
- hydrogen sulfide
- sulfuretted hydrogen
- detection method
- nitrogen
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Abstract
The invention relates to a detection method of hydrogen sulfide. The hydrogen sulfide in crude oil is detected through using a nitrogen air stripping method, the crude oil is pretreated by adopting warming and stirring, the temperature is set to be 30-90 DEG C; condensed crude oil is obtained at the temperature of 30-40 DEG C during warming and pretreating, and thickened oil is obtained at the temperature of 70-75 DEG C during the warming and the pretreating. The flow velocity of the nitrogen is controlled to be 0.1L/min for 5min, and to be 0.05L/min for 10min. According to the detection method, a method in which the hydrogen sulfide in the crude oil is stripped by using nitrogen, the hydrogen sulfide in the nitrogen is detected by using iodometry, and the detected content of the hydrogen sulfide in the nitrogen is converted to the content of the hydrogen sulfide in the crude oil; the proper crude oil temperature, the proper carrier gas flow rate and stripping time are selected, and the precision is high.
Description
Technical field
The present invention relates to crude oil detection technique field, particularly the detection method of sulfuretted hydrogen.
Background technology
Sulfuretted hydrogen colourless gas, has rotten egg smell, water-soluble, ethanol, gasoline, kerosene, crude oil.Water-soluble rear generation hydrosulphuric acid, unstable chemcial property.China's workshop air maximum permissible concentration is 10mg/m
3.According to the requirement of the hydrogen sulfide containing production of hydrocarbons of SY/T6137-2005 and natural gas treatment plant operation recommended practice standard, hydrogen sulfide content should be lower than 15mg/m
3.Factory floor has stipulated that the IDLH value of sulfuretted hydrogen is 300ppm, and under this concentration, workman disengaged in 30 minutes, the irreversible health hazard of unlikely generation.Meanwhile, the extent of injury grade of having stipulated sulfuretted hydrogen is II level (highly harm).
Sulfuretted hydrogen is strong neurotoxic substance, during low concentration, obvious to the local irritant effect of respiratory tract and eye; During high concentration, systemic effect is obvious, shows as central nervous system symptom and the symptom of suffocating.And during low concentration, the originally enhancing of stink of sulfuretted hydrogen and the rising of concentration are directly proportional; But when concentration surpasses 10mg/m
3after left and right, concentration continue to raise and stink weakens on the contrary, causes people's olfactory fatigue and can not discover the existence of sulfuretted hydrogen.Therefore, a lot of hydrogen sulfide poisoning casualty accidents are not recognize dangerous in the situation that and occur people, therefore can not rely on its stink whether strongly to judge, have or not dangerous appearance.In China, hydrogen sulfide poisoning event is number two in management of occupational acute poisoning, poisoning next in number only to anthracemia.
Summary of the invention
The method that detects hydrogen sulfide in oil product content mainly contains spectrophotometric method, Indirect Atomic Absorption Apectrometry Determination of Sulfateion and electrochemical process etc.These methods require the colourity of oil product lower, and more transparent, are therefore not suitable for the mensuration of hydrogen sulfide content in crude oil.
The method that the invention provides sulfuretted hydrogen in a kind of effective mensuration crude oil, technical scheme is:
The detection method of sulfuretted hydrogen, is characterized in that, adopts the sulfuretted hydrogen in crude oil to measure the sulfuretted hydrogen in crude oil through nitrogen stripping, and described crude oil adopts to heat up and stirs pre-service, and temperature setting is set to 30～90 ℃;
Wherein, in crude oil, the calculating formula of hydrogen sulfide content is as follows:
ω=17.04c(V
1-V
2)/m×1000，
ω in formula---the massfraction of sulfuretted hydrogen in crude oil, 10
-6;
The amount concentration of c---sodium thiosulfate standard solution, mol/L;
V1, V2---blank titration and sample drop timing, the consumption of sodium thiosulfate standard solution, mL;
The quality of m---oil sample, g.
30～40 ℃ of described intensification pre-service condensation crude oil, 70～75 ℃ of viscous crude.
Described nitrogen flow rate is controlled at 0.1L/min, keeps 5min, then with flow velocity 0.05L/min, keeps 10min.
Sulfuretted hydrogen in crude oil of the present invention refers to the mensuration (first) of GB/T11060.1-2010 < < rock gas sulfocompound through nitrogen stripping: by iodometric determination hydrogen sulfide content > > relevant regulations, undertaken.
The present invention adopts the sulfuretted hydrogen in nitrogen stripping crude oil, with the sulfuretted hydrogen in iodometric determination nitrogen, is converted into the method for the hydrogen sulfide content in crude oil, selects suitable crude oil temperature, suitable flow rate of carrier gas and stripping time, and precision is high.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
The detection method of sulfuretted hydrogen, is characterized in that, adopts the sulfuretted hydrogen in crude oil to measure the sulfuretted hydrogen in crude oil through nitrogen stripping, and described crude oil adopts to heat up and stirs pre-service, and temperature setting is set to 30～90 ℃;
Wherein, the calculating of hydrogen sulfide content in crude oil
ω=17.04c(V
1-V
2)/m×1000， （1）
ω in formula---the massfraction of sulfuretted hydrogen in crude oil, 10
-6;
The amount concentration of c---sodium thiosulfate standard solution, mol/L;
V1, V2---blank titration and sample drop timing, the consumption of sodium thiosulfate standard solution, mL;
The quality of m---oil sample, g.
30～40 ℃ of described intensification pre-service condensation crude oil, 70～75 ℃ of viscous crude.
Described nitrogen flow rate is controlled at 0.1L/min, keeps 5min, then with flow velocity 0.05L/min, keeps 10min.
The sulfide hydrogen crude oil test group of compound concentration gradient, the method for employing embodiment 1, calculates precision according to measurement result, and experimental result is listed in table.From table, under three concentration levels, data result can be found out, the precision of the inventive method is fine.
Claims (3)
1. the detection method of sulfuretted hydrogen, is characterized in that, adopts the sulfuretted hydrogen in crude oil to measure the sulfuretted hydrogen in crude oil through nitrogen stripping, and described crude oil adopts to heat up and stirs pre-service, and temperature setting is set to 30～90 ℃;
Wherein, in crude oil, the calculating formula of hydrogen sulfide content is as follows:
ω=17.04c(V
1-V
2)/m×1000，
ω in formula---the massfraction of sulfuretted hydrogen in crude oil, 10
-6;
The amount concentration of c-sodium thiosulfate standard solution, mol/L;
V1, V2-blank titration and sample drop timing, the consumption of sodium thiosulfate standard solution, mL;
The quality of m-oil sample, g.
2. the detection method of sulfuretted hydrogen according to claim 1, is characterized in that, 30～40 ℃ of described intensification pre-service condensation crude oil, 70～75 ℃ of viscous crude.
3. the detection method of sulfuretted hydrogen according to claim 1, is characterized in that, described nitrogen flow rate is controlled at 0.1L/min, keeps 5min, then with flow velocity 0.05L/min, keeps 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310534053.7A CN103558334A (en) | 2013-10-31 | 2013-10-31 | Detection method of hydrogen sulfide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310534053.7A CN103558334A (en) | 2013-10-31 | 2013-10-31 | Detection method of hydrogen sulfide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103558334A true CN103558334A (en) | 2014-02-05 |
Family
ID=50012642
Family Applications (1)
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|---|---|---|---|
| CN201310534053.7A Pending CN103558334A (en) | 2013-10-31 | 2013-10-31 | Detection method of hydrogen sulfide |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107660268A (en) * | 2015-05-12 | 2018-02-02 | 国际壳牌研究有限公司 | Method including analyzing streaming flow |
| CN110927328A (en) * | 2019-12-13 | 2020-03-27 | 中国石油化工股份有限公司 | Method for measuring content of soluble hydrogen sulfide in desulfurization solution |
| US11725147B2 (en) | 2020-12-22 | 2023-08-15 | Suncor Energy Inc. | Volatile content measurement in process streams such as froth treatment tailings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2317617A (en) * | 1996-09-28 | 1998-04-01 | Capcis Ltd | Removing sulphur compounds from liquid hydrocarbons |
| CN101403686A (en) * | 2008-11-13 | 2009-04-08 | 新疆石油管理局试油公司 | Apparatus for measuring hydrogen sulphide content in crude oil and natural gas in pipe |
| CN201335822Y (en) * | 2009-01-12 | 2009-10-28 | 中国石化集团西北石油局 | Device for detecting volatile hydrogen sulfide in crude oil |
| CN102455299A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Detection device and detection method of hydrogen sulfide in oil product |
-
2013
- 2013-10-31 CN CN201310534053.7A patent/CN103558334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2317617A (en) * | 1996-09-28 | 1998-04-01 | Capcis Ltd | Removing sulphur compounds from liquid hydrocarbons |
| CN101403686A (en) * | 2008-11-13 | 2009-04-08 | 新疆石油管理局试油公司 | Apparatus for measuring hydrogen sulphide content in crude oil and natural gas in pipe |
| CN201335822Y (en) * | 2009-01-12 | 2009-10-28 | 中国石化集团西北石油局 | Device for detecting volatile hydrogen sulfide in crude oil |
| CN102455299A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Detection device and detection method of hydrogen sulfide in oil product |
Non-Patent Citations (2)
| Title |
|---|
| 吴凯: "原油中低含量硫化氢测定方法的研究", 《油气田地面工程》 * |
| 陈青等: "原油中硫化氢含量检测方法", 《新疆石油地质》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107660268A (en) * | 2015-05-12 | 2018-02-02 | 国际壳牌研究有限公司 | Method including analyzing streaming flow |
| CN110927328A (en) * | 2019-12-13 | 2020-03-27 | 中国石油化工股份有限公司 | Method for measuring content of soluble hydrogen sulfide in desulfurization solution |
| US11725147B2 (en) | 2020-12-22 | 2023-08-15 | Suncor Energy Inc. | Volatile content measurement in process streams such as froth treatment tailings |
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Application publication date: 20140205 |