CN102455294B - Detection device, and detection method for hydrogen sulfide in oil product - Google Patents
Detection device, and detection method for hydrogen sulfide in oil product Download PDFInfo
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- CN102455294B CN102455294B CN 201010519520 CN201010519520A CN102455294B CN 102455294 B CN102455294 B CN 102455294B CN 201010519520 CN201010519520 CN 201010519520 CN 201010519520 A CN201010519520 A CN 201010519520A CN 102455294 B CN102455294 B CN 102455294B
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Abstract
The invention provides a detection device, and a detection method for hydrogen sulfide in an oil product. By the detection device and the detection method, the oil product can be sampled under the condition of isolating the air, so that the hydrogen sulfide can be prevented from escaping from the oil product to the air; furthermore, the hydrogen sulfide can be prevented from being oxidized by oxygen in the air; therefore, a small amount of hydrogen sulfide can be detected; and the detecting range of petroleum products is expanded.
Description
Technical field
The present invention relates to a kind of pick-up unit, and a kind of detection method of hydrogen sulfide in oil product.
Background technology
Be present in the sulfuretted hydrogen in petroleum products, easily cause that the corrosivity index (silver slice corrosion rank, copper corrosion rank) of oil product is defective, therefore be regarded as objectionable impurities.
Because sulfuretted hydrogen is unstable in oil product, both easily from oil, overflowed, chemical reaction (as be dissolved in the oxygen institute's oxidation in oil or be subject to the impact of illumination) very easily occurs again and change into other sulfur species, therefore, the detection of sulfuretted hydrogen is very difficult.
At present, people adopt lead acetate method to carry out the sulfuretted hydrogen in qualitative detection light-end products (as gasoline, jet fuel and diesel oil) usually.During detection, wetting lead acetate paper is placed on to the detection bottle (pipe) mouthful that the light-end products sample is housed, detect bottle (pipe) and can use heating water bath, sulfuretted hydrogen is overflowed from the liquid oil phase, and react and make it variable color with wetting lead acetate paper, thereby determine the existence of sulfuretted hydrogen in the liquid oils such as gasoline, jet fuel.But the problem that above-mentioned detection method exists is: oil product that can't be lower to the content of sulfuretted hydrogen is detected, and sulfuretted hydrogen that more can't be lower to content quantitatively detects.
Simultaneously, can also use the qualitative detection sulfuretted hydrogen such as doctor test's method, also can use the potentiometric titration (standard GB/T 1792 of measuring mercaptan, the minimum value of detecting is 3 μ g/g) quantitatively detect sulfuretted hydrogen, yet, for example, when hydrogen sulfide content lower (being less than 3 μ g/g), the method still can't detect the existence of sulfuretted hydrogen.
The petroleum chemical industry standard SH/T0125 of country has stipulated the method that adopts lead acetate method to detect sulfuretted hydrogen in liquefied petroleum gas (LPG) with a kind of, the method is by after gasifying liquefied petroleum gas, make the petroleum gas of gasification by wetting lead acetate paper, sulfuretted hydrogen in liquefied petroleum gas (LPG) reacts with wetting lead acetate paper bar, and make the test strips variable color, determine existing of sulfuretted hydrogen with this.Although the method can detect the sulfuretted hydrogen that is present in lower content in rock gas, can not the sulfuretted hydrogen in liquid oil (as gasoline, jet fuel and diesel oil) be detected.
Summary of the invention
The object of the invention is to overcome can't be lower to content in oil product in prior art the defect that detected of sulfuretted hydrogen, a kind of pick-up unit and detection method are provided, with the sulfuretted hydrogen lower to content in oil product, detected.
The invention provides a kind of pick-up unit, this device comprises the first container and second container, the first container and second container are communicated with by conduit, and two ports of conduit lay respectively at the top of the first container and the bottom of second container, wherein, described pick-up unit also comprises the first pipeline, second pipe and the 3rd pipeline, one end of the first pipeline is communicated with the bottom of the first container, the end to end be communicated with from the bottom with the first container of the first pipeline is disposed with the first T-valve and the first stop valve, between the first stop valve of second pipe one end and the first pipeline and the first T-valve, be communicated with, second pipe is provided with the second stop valve, one end of the 3rd pipeline is communicated with the top of second container, be provided with Test paper in second container.
The present invention also provides a kind of detection method of hydrogen sulfide in oil product, the method comprises that the oil product that will contain sulfuretted hydrogen introduces in the first container quantitatively, make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container, the inert gas flow that carries sulfuretted hydrogen is contacted with the Test paper in second container, wherein, before the method also comprises that the oil product that will contain sulfuretted hydrogen is introduced in the first container quantitatively, with the air in inert gas replacement the first container and second container.
Pick-up unit provided by the invention and detection method, can guarantee to be sampled under the condition of isolated air, thereby avoided sulfuretted hydrogen to escape in air from oil product, also avoided on the other hand sulfuretted hydrogen by airborne dioxygen oxidation, thus cause can't be lower to content sulfuretted hydrogen detected.
The accompanying drawing explanation
Fig. 1 is the structural representation that has shown the pick-up unit of one embodiment of the present invention;
Fig. 2 has shown the structural representation that is used as the orifice plate of gas distributor in pick-up unit provided by the invention.
Fig. 3 is the structural representation that has shown the pick-up unit of a kind of preferred implementation of the present invention;
Fig. 4 is the structural representation that has shown the pick-up unit of another embodiment of the invention;
Fig. 5 is the structural representation that has shown the pick-up unit of another kind of preferred implementation of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of pick-up unit, this device comprises the first container 1 and second container 2, the first container 1 and second container 2 are communicated with by conduit 3, and two ports of conduit 3 lay respectively at the top of the first container 1 and the bottom of second container 2, wherein, described pick-up unit also comprises the first pipeline 4, second pipe 5 and the 3rd pipeline 6, one end of the first pipeline 4 is communicated with the bottom of the first container 1, the end to end be communicated with from the bottom with the first container 1 of the first pipeline 4 is disposed with the first T-valve 7 and the first stop valve 8, between the first stop valve 8 of second pipe 5 one ends and the first pipeline 4 and the first T-valve 7, be communicated with, second pipe 5 is provided with the second stop valve 9, one end of the 3rd pipeline 6 is communicated with the top of second container 2, be provided with Test paper 15 in second container 2.
In a kind of preferred implementation as shown in Fig. 3 or 5, second pipe 5 is provided with the second T-valve 10, between the first stop valve 8 of outlet of second pipe 5 one ends by the second T-valve 10 and the first pipeline 4 and the first T-valve 7, be communicated with, and described pick-up unit also comprises the 4th pipeline 11; One end of the 4th pipeline 11 is communicated with another outlet of the second T-valve 10, between the two ends of the other end of the 4th pipeline 11 and the 3rd pipeline 6, is communicated with.In this preferred implementation, because second pipe 5 is provided with the second T-valve 10 and the second T-valve is communicated with the 4th pipeline 11, therefore, switching the second T-valve 10 so that after the first pipeline 4 and second pipe 5 disconnections, second pipe 5 is communicated with the 4th pipeline 11, thereby make can finally discharge by the 4th pipeline 11 from the inert gas of second pipe 5, and be communicated with between the two ends due to the other end of four pipelines 11 and the 3rd pipeline 6, this has just been avoided air to enter second container 2 from the 3rd pipeline 6, thereby make second container 2 and air isolated, further to reduce the impact of air on testing result.
In the present invention, the first container 1 has no particular limits, as long as can keep sealing and can hold got sample, for example, and can be for thering is the stopple coupon of scale, the bottom of described stopple coupon is provided with gas distributor 12.Gas distributor can be the various devices that can make the sampling sample interior with the first container 1 from the gas uniform ground of the first container 1 bottom contact, for example, gas distributor 12 can be orifice plate as shown in Figure 2, be provided with a plurality of through holes 13 on described orifice plate, the size of through hole 13 can in very large range change, for example, the diameter of through hole 13 can be 0.2-2mm, is preferably 0.5-1mm; The total sectional area of a plurality of through holes 13 can, for the 1-75% of orifice plate single face area, be preferably 1-50%.
Described second container 2 has no particular limits, as long as can keep sealing and can hold Test paper 15, for example, can have for top and bottom the glass tube of plug.
As shown in Fig. 1 or 3, in one embodiment of the invention, the bottom of second container 2 is provided with the port top that the second gas distributor 14, the second gas distributors 14 are positioned at the conduit 3 of second container 2 bottoms; Test paper 15 is for by the lead acetate paper of the bar shaped of water-wet and be positioned at the top of second container 2.The kind of the second gas distributor 14 has no particular limits, as long as can make to contact with Test paper 15 from the gas uniform ground of the first container 1, for example, can be surface plate.
As shown in Fig. 4 or 5, in the preferred embodiment of the present invention, the bottom of second container 2 is provided with funnel, and Test paper 15 is that lead acetate paper and the inwall of being close to funnel are placed, and the lower port of funnel is communicated with conduit 3.
The present invention also provides a kind of detection method of hydrogen sulfide in oil product, the method comprises that the oil product that will contain sulfuretted hydrogen introduces in the first container quantitatively, make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container, the inert gas flow that carries sulfuretted hydrogen is contacted with the Test paper in second container, wherein, before the method also comprises that the oil product that will contain sulfuretted hydrogen is introduced in the first container quantitatively, with the air in inert gas replacement the first container and second container.
In one embodiment of the invention, the detection method of described hydrogen sulfide in oil product has been used the pick-up unit as shown in Fig. 1 or 4, this device comprises the first container 1 and second container 2, the first container 1 and second container 2 are communicated with by conduit 3, and two ports of conduit 3 lay respectively at the top of the first container 1 and the bottom of second container 2, wherein, described pick-up unit also comprises the first pipeline 4, second pipe 5 and the 3rd pipeline 6, one end of the first pipeline 4 is communicated with the bottom of the first container 1, the end to end be communicated with from the bottom with the first container 1 of the first pipeline 4 is disposed with the first T-valve 7 and the first stop valve 8, between the first stop valve 8 of second pipe 5 one ends and the first pipeline 4 and the first T-valve 7, be communicated with, second pipe 5 is provided with the second stop valve 9, one end of the 3rd pipeline 6 is communicated with the top of second container 2, be provided with Test paper 15 in second container 2, the method comprises: the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source is communicated with the second stop valve 9, make inert gas successively by second pipe 5, the first pipeline 4, the first container 1 and second container 2 also flow out from the 3rd pipeline 6, and make inert gas successively by second pipe 5, the first pipeline 4 and the first stop valve 8 flow out, go out air wherein with inert gas replacement, close successively the first stop valve 8 and the second stop valve 9, open the first stop valve 8, make the oil product that contains sulfuretted hydrogen flow into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches scheduled volume, close the first stop valve 8, open the second stop valve 9 and make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container 1, the inert gas that carries sulfuretted hydrogen is contacted with the Test paper 15 in second container 2.
In above-mentioned detection method, a kind of embodiment of described pick-up unit is: the bottom of second container 2 is provided with the port top that the second gas distributor 14, the second gas distributors 14 are positioned at the conduit 3 of second container 2 bottoms; Test paper 15 is for by the lead acetate paper of the bar shaped of water-wet and be positioned at the top (as shown in Fig. 1 or Fig. 3) of second container 2.
In above-mentioned detection method, the another kind of embodiment of described pick-up unit is: the bottom of second container 2 is provided with funnel, Test paper 15 is that lead acetate paper and the inwall of being close to funnel are placed, and the lower port of funnel is communicated with (as shown in Fig. 4 or Fig. 5) with conduit 3.
In a kind of preferred implementation, the detection method of described hydrogen sulfide in oil product has been used the pick-up unit as shown in Fig. 3 or 5, this device comprises the first container 1 and second container 2, the first container 1 and second container 2 are communicated with by conduit 3, and two ports of conduit 3 lay respectively at the top of the first container 1 and the bottom of second container 2, wherein, described pick-up unit also comprises the first pipeline 4, second pipe 5 and the 3rd pipeline 6, one end of the first pipeline 4 is communicated with the bottom of the first container 1, the end to end be communicated with from the bottom with the first container 1 of the first pipeline 4 is disposed with the first T-valve 7 and the first stop valve 8, between the first stop valve 8 of second pipe 5 one ends and the first pipeline 4 and the first T-valve 7, be communicated with, second pipe 5 is provided with the second stop valve 9, one end of the 3rd pipeline 6 is communicated with the top of second container 2, be provided with Test paper 15 in second container 2, wherein, second pipe 5 is provided with the second T-valve 10, between the first stop valve 8 of outlet of second pipe 5 one ends by the second T-valve 10 and the first pipeline 4 and the first T-valve 7, be communicated with, this device also comprises the 4th pipeline 11, one end of the 4th pipeline 11 is communicated with another outlet of the second T-valve 10, between the two ends of the other end of the 4th pipeline 11 and the 3rd pipeline 6, be communicated with, the method comprises: the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, the second T-valve 10 is switched to the first pipeline 4 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source is communicated with the second stop valve 9, make inert gas successively by second pipe 5, the first pipeline 4, the first container 1 and second container 2 also flow out from the 3rd pipeline 6, and make inert gas successively by second pipe 5, the first pipeline 4 and the first stop valve 8 flow out, go out air wherein with inert gas replacement, close the first stop valve 8, and the second stop valve 9 is switched to the 4th pipeline 11 and is communicated with, open the first stop valve 8, make the oil product that contains sulfuretted hydrogen flow into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches scheduled volume, close the first stop valve 8, open the second stop valve 9 and make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container 1, the inert gas that carries sulfuretted hydrogen is contacted with the Test paper 15 in second container 2.
In above-mentioned detection method, a kind of embodiment of described pick-up unit is: the bottom of second container 2 is provided with the port top that the second gas distributor 14, the second gas distributors 14 are positioned at the conduit 3 of second container 2 bottoms; Test paper 15 is for by the lead acetate paper of the bar shaped of water-wet and be positioned at the top (as shown in Fig. 1 or Fig. 3) of second container 2.Can be by distilled water, that the lead acetate paper of bar shaped is wetting.
In above-mentioned detection method, the another kind of embodiment of described pick-up unit is: the bottom of second container 2 is provided with funnel, Test paper 15 is that lead acetate paper and the inwall of being close to funnel are placed, and the lower port of funnel is communicated with (as shown in Fig. 4 or Fig. 5) with conduit 3.
In a kind of more preferably embodiment, detection method provided by the invention also comprises: before the oil product that makes to contain sulfuretted hydrogen flows into the first container 1, switch the first T-valve 7, the first pipeline is communicated with another outlet of the first T-valve 7, the oil product that part contains sulfuretted hydrogen is flowed out.The interior gas that may exist of emptying the first pipeline 4, make the result of detection more accurate so better.
In the present invention, the first container 1 has no particular limits, as long as can keep sealing and can hold got sample, for example, and can be for thering is the stopple coupon of scale, the bottom of described stopple coupon is provided with gas distributor 12.Gas distributor can be the various devices that can make the sampling sample interior with the first container 1 from the gas uniform ground of the first container 1 bottom contact, for example, gas distributor 12 can be orifice plate as shown in Figure 2, be provided with a plurality of through holes 13 on described orifice plate, the size of through hole 13 can in very large range change, for example, the diameter of through hole 13 can be 0.2-2mm, is preferably 0.5-1mm; The total sectional area of a plurality of through holes 13 can, for the 1-75% of orifice plate single face area, be preferably 1-50%.
Described second container 2 has no particular limits, as long as can keep sealing and can hold Test paper 15, for example, can have for top and bottom the glass tube of plug.
In the present invention, the sulfuretted hydrogen that enters second container 2 contact with the wetting lead acetate paper in second container 2, and the existence of according to the variation of test paper color, indicating sulfuretted hydrogen whether.
Inert gas described in the present invention can be the various gases that do not react with liquid (comprising oil product and hydrogen sulfide in oil product) in the first container 1 and the Test paper in second container 2, can be for example one or more in nitrogen, periodic table of elements group 0 element gas.
Method provided by the invention can detect hydrogen sulfide content and hang down to the sour product of 0.05 μ g/g.
Below by concrete example, pick-up unit of the present invention and detection method are further described in more detail.
Preparation Example 1
Getting 1L hydrocracking jet fuel (is provided by Maoming branch office of Sinopec joint-stock company; mercaptan sulfur content (in sulphur) is not more than 1 μ g/g); with nitrogen, that air displacement wherein is clean; and, under nitrogen protection, in jet fuel, inject sulfuretted hydrogen (being reacted generation by dilute sulfuric acid with calcium sulfide).Record hydrogen sulfide content (in sulphur) 10 μ g/g by potentiometric titration.
Under nitrogen protection, 200 times of jet fuel dilutions that contains 10 μ g/g sulfuretted hydrogen by above-mentioned are to the about 0.05 μ g/g (dilution is the above-mentioned hydrocracking jet fuel of having used the nitrogen replacement net air) of hydrogen sulfide content.The pact of preparing thus contains the sample of 0.05 μ g/g sulfuretted hydrogen as testing sample of the present invention.
According to accompanying drawing 1, device is connected, the air displacement with high pure nitrogen in installing is clean, and the testing sample that uses Preparation Example 1 to make is as oil product, and concrete steps are as follows:
(1) the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source is communicated with the second stop valve 9, inert gas (nitrogen) is flowed out by second pipe 5, the first pipeline 4, the first container 1 and second container 2 and from the 3rd pipeline 6 successively, and inert gas is flowed out successively by second pipe 5, the first pipeline 4 and the first stop valve 8, go out air wherein with inert gas replacement, close successively the first stop valve 8 and the second stop valve 9;
(2) open the first stop valve 8, the testing sample that embodiment 1 is made flows into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches 500mL;
(3) close the first stop valve 8, opening the second stop valve 9 makes inert gas (nitrogen) flow through the testing sample (flow 100mL/min-300mL/min) in the first container 1, make to carry the inert gas of sulfuretted hydrogen and contact with the wetting lead acetate paper bar in second container 2, the time that passes into of controlling inert gas is 1 hour.Observe the lead acetate paper bar and become micro-yellow, show to detect hydrogen sulfide gas.
Detect embodiment 2
According to accompanying drawing 3, device is connected, the air displacement with high pure nitrogen in installing is clean, and the testing sample that uses Preparation Example 1 to make is as oil product, and concrete steps are as follows:
(1) the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, the second T-valve 10 is switched to the first pipeline 4 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source (nitrogen) is communicated with the second stop valve 9, make inert gas successively by second pipe 5, the first pipeline 4, the first container 1 and second container 2 also flow out from the 3rd pipeline 6, and make inert gas successively by second pipe 5, the first pipeline 4 and the first stop valve 8 flow out, go out air wherein with inert gas replacement, close the first stop valve 8, and the second stop valve 9 is switched to the 4th pipeline 11 and is communicated with,
(2) open the first stop valve 8, the testing sample that embodiment 1 is made flows into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches 500mL;
(3) close the first stop valve 8, opening the second stop valve 9 makes inert gas (nitrogen) flow through the testing sample (flow 100mL/min-300mL/min) in the first container 1, make to carry the inert gas of sulfuretted hydrogen and contact with the wetting lead acetate paper bar in second container 2, the time that passes into of controlling inert gas is 1 hour.Observe the lead acetate paper bar and become micro-yellow, show to detect hydrogen sulfide gas.
Detect embodiment 3
According to accompanying drawing 4, device is connected, the air displacement with high pure nitrogen in installing is clean, and the testing sample that uses Preparation Example 1 to make is as oil product, and concrete steps are as follows:
(1) the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source is communicated with the second stop valve 9, inert gas (nitrogen) is flowed out by second pipe 5, the first pipeline 4, the first container 1 and second container 2 and from the 3rd pipeline 6 successively, and inert gas is flowed out successively by second pipe 5, the first pipeline 4 and the first stop valve 8, go out air wherein with inert gas replacement, close successively the first stop valve 8 and the second stop valve 9;
(2) open the first stop valve 8, the testing sample that embodiment 1 is made flows into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches 500mL;
(3) close the first stop valve 8, opening the second stop valve 9 makes inert gas (nitrogen) flow through the testing sample (flow 100mL/min-300mL/min) in the first container 1, make to carry the inert gas of sulfuretted hydrogen and contact with the wetting taper lead acetate paper (being close to the inwall setting of funnel) in second container 2, the time that passes into of controlling inert gas is 1 hour.The tapering of observing the lead acetate paper of taper in funnel becomes micro-yellow, shows to detect hydrogen sulfide gas.
Detect embodiment 4
According to accompanying drawing 5, device is connected, the air displacement with high pure nitrogen in installing is clean, and the testing sample that uses Preparation Example 1 to make is as oil product, and concrete steps are as follows:
(1) the first T-valve 7 is switched to the bottom of the first container 1 and is communicated with, the second T-valve 10 is switched to the first pipeline 4 and is communicated with, open the first stop valve 8 and the second stop valve 9, inert gas source (nitrogen) is communicated with the second stop valve 9, make inert gas successively by second pipe 5, the first pipeline 4, the first container 1 and second container 2 also flow out from the 3rd pipeline 6, and make inert gas successively by second pipe 5, the first pipeline 4 and the first stop valve 8 flow out, go out air wherein with inert gas replacement, close the first stop valve 8, and the second stop valve 9 is switched to the 4th pipeline 11 and is communicated with,
(2) open the first stop valve 8, the testing sample that embodiment 1 is made flows into the first container 1 through the first pipeline 4, until the oil product of the first container 1 reaches 500mL;
(3) close the first stop valve 8, opening the second stop valve 9 makes inert gas (nitrogen) flow through the testing sample (flow 100mL/min-300mL/min) in the first container 1, make to carry the inert gas of sulfuretted hydrogen and contact with the wetting taper lead acetate paper (being close to the inwall setting of funnel) in second container 2, the time that passes into of controlling inert gas is 1 hour.The tapering of observing the lead acetate paper of taper in funnel becomes micro-yellow, shows to detect hydrogen sulfide gas.
By above embodiment, can find out, pick-up unit provided by the invention and detection method can detect exist (the reaching 0.05 μ g/g) of sulfuretted hydrogen that content is lower, thereby have enlarged the sensing range to petroleum products.
Claims (17)
1. the pick-up unit of a hydrogen sulfide in oil product, this device comprises the first container (1) and second container (2), the first container (1) and second container (2) are communicated with by conduit (3), and two ports of conduit (3) lay respectively at the top of the first container (1) and the bottom of second container (2), wherein, described pick-up unit also comprises the first pipeline (4), second pipe (5) and the 3rd pipeline (6), one end of the first pipeline (4) is communicated with the bottom of the first container (1), the end to end be communicated with from the bottom with the first container (1) of the first pipeline (4) is disposed with the first T-valve (7) and the first stop valve (8), between first stop valve (8) of second pipe (5) one ends and the first pipeline (4) and the first T-valve (7), be communicated with, second pipe (5) is provided with the second stop valve (9), one end of the 3rd pipeline (6) is communicated with the top of second container (2), be provided with Test paper (15) in second container (2), wherein, inert gas source is communicated with the second stop valve (9), the oil product that contains sulfuretted hydrogen flows into the first container (1) through the first pipeline (4).
2. device according to claim 1, wherein, second pipe (5) is provided with the second T-valve (10), between first stop valve (8) of outlet of second pipe (5) one ends by the second T-valve (10) and the first pipeline (4) and the first T-valve (7), is communicated with.
3. device according to claim 2, wherein, this device also comprises the 4th pipeline (11); One end of the 4th pipeline (11) is communicated with another outlet of the second T-valve (10), between the two ends of the other end of the 4th pipeline (11) and the 3rd pipeline (6), is communicated with.
4. device according to claim 1, wherein, the first container (1) is the graduated stopple coupon of tool, the bottom of stopple coupon is provided with the first gas distributor (12), the first gas distributor (12) is orifice plate, be provided with a plurality of through holes (13) on orifice plate, through hole (13) diameter is 0.2-2mm, the 1-75% that the total sectional area of a plurality of through holes (13) is orifice plate single face area.
5. device according to claim 4, wherein, through hole (13) diameter is 0.5-1mm, the 1-50% that the total sectional area of a plurality of through holes (13) is orifice plate single face area.
6. device according to claim 1, wherein, the bottom of second container (2) is provided with the second gas distributor (14), and the second gas distributor (14) is positioned at the port top of the conduit (3) of second container (2) bottom; Test paper (15) is for by the lead acetate paper of the bar shaped of water-wet and be positioned at the top of second container (2).
7. device according to claim 6, wherein, the second gas distributor (14) is surface plate.
8. device according to claim 1, wherein, the bottom of second container (2) is provided with funnel, and Test paper (15) is placed for lead acetate paper and the inwall of being close to funnel, and the lower port of funnel is communicated with conduit (3).
9. the detection method of a hydrogen sulfide in oil product, the method comprises that the oil product that will contain sulfuretted hydrogen introduces in the first container quantitatively, make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container, the inert gas flow that carries sulfuretted hydrogen is contacted with the Test paper in second container, wherein, before the method also comprises that the oil product that will contain sulfuretted hydrogen is introduced in the first container quantitatively, with the air in inert gas replacement the first container and second container, the method is used a kind of pick-up unit to carry out, this device comprises the first container (1) and second container (2), the first container (1) and second container (2) are communicated with by conduit (3), and two ports of conduit (3) lay respectively at the top of the first container (1) and the bottom of second container (2), wherein, described pick-up unit also comprises the first pipeline (4), second pipe (5) and the 3rd pipeline (6), one end of the first pipeline (4) is communicated with the bottom of the first container (1), the end to end be communicated with from the bottom with the first container (1) of the first pipeline (4) is disposed with the first T-valve (7) and the first stop valve (8), between first stop valve (8) of second pipe (5) one ends and the first pipeline (4) and the first T-valve (7), be communicated with, second pipe (5) is provided with the second stop valve (9), one end of the 3rd pipeline (6) is communicated with the top of second container (2), be provided with Test paper (15) in second container (2), the method comprises:
The first T-valve (7) is switched to the bottom of the first container (1) and is communicated with, open the first stop valve (8) and the second stop valve (9), inert gas source is communicated with the second stop valve (9), make inert gas successively by second pipe (5), the first pipeline (4), the first container (1) and second container (2) also flow out from the 3rd pipeline (6), and make inert gas successively by second pipe (5), the first pipeline (4) and the first stop valve (8) flow out, go out air wherein with inert gas replacement, close successively the first stop valve (8) and the second stop valve (9),
Open the first stop valve (8), make the oil product that contains sulfuretted hydrogen flow into the first container (1) through the first pipeline (4), until the oil product of the first container (1) reaches scheduled volume; Close the first stop valve (8), open the second stop valve (9) and make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container (1), the inert gas that carries sulfuretted hydrogen is contacted with the Test paper (15) in second container (2).
10. the detection method of a hydrogen sulfide in oil product, the method comprises that the oil product that will contain sulfuretted hydrogen introduces in the first container quantitatively, make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container, the inert gas flow that carries sulfuretted hydrogen is contacted with the Test paper in second container, wherein, before the method also comprises that the oil product that will contain sulfuretted hydrogen is introduced in the first container quantitatively, with the air in inert gas replacement the first container and second container, the method is used a kind of pick-up unit to carry out, this device comprises the first container (1) and second container (2), the first container (1) and second container (2) are communicated with by conduit (3), and two ports of conduit (3) lay respectively at the top of the first container (1) and the bottom of second container (2), wherein, described pick-up unit also comprises the first pipeline (4), second pipe (5) and the 3rd pipeline (6), one end of the first pipeline (4) is communicated with the bottom of the first container (1), the end to end be communicated with from the bottom with the first container (1) of the first pipeline (4) is disposed with the first T-valve (7) and the first stop valve (8), between first stop valve (8) of second pipe (5) one ends and the first pipeline (4) and the first T-valve (7), be communicated with, second pipe (5) is provided with the second stop valve (9), one end of the 3rd pipeline (6) is communicated with the top of second container (2), be provided with Test paper (15) in second container (2), wherein, second pipe (5) is provided with the second T-valve (10), between first stop valve (8) of outlet of second pipe (5) one ends by the second T-valve (10) and the first pipeline (4) and the first T-valve (7), be communicated with, this device also comprises the 4th pipeline (11), one end of the 4th pipeline (11) is communicated with another outlet of the second T-valve (10), between the two ends of the other end of the 4th pipeline (11) and the 3rd pipeline (6), is communicated with, and the method comprises:
The first T-valve (7) is switched to the bottom of the first container (1) and is communicated with, the second T-valve (10) is switched to the first pipeline (4) and is communicated with, open the first stop valve (8) and the second stop valve (9), inert gas source is communicated with the second stop valve (9), make inert gas successively by second pipe (5), the first pipeline (4), the first container (1) and second container (2) also flow out from the 3rd pipeline (6), and make inert gas successively by second pipe (5), the first pipeline (4) and the first stop valve (8) flow out, go out air wherein with inert gas replacement, close the first stop valve (8), and the second stop valve (9) is switched to the 4th pipeline (11) and is communicated with,
Open the first stop valve (8), make the oil product that contains sulfuretted hydrogen flow into the first container (1) through the first pipeline (4), until the oil product of the first container (1) reaches scheduled volume; Close the first stop valve (8), open the second stop valve (9) and make inert gas flow through the oil product that contains sulfuretted hydrogen in the first container (1), the inert gas that carries sulfuretted hydrogen is contacted with the Test paper (15) in second container (2).
11. according to the described method of claim 9 or 10, wherein, the method also comprises: make the oil product that contains sulfuretted hydrogen flow into the first container (1) before, switch the first T-valve (7), the first pipeline is communicated with another outlet of the first T-valve (7), the oil product that part contains sulfuretted hydrogen is flowed out.
12., according to the described method of claim 9 or 10, wherein, the first container (1) is the graduated stopple coupon of tool, the bottom of stopple coupon is provided with gas distributor.
13. according to the described method of claim 9 or 10, wherein, the first gas distributor (12) is orifice plate, is provided with a plurality of through holes (13) on orifice plate, through hole (13) diameter is 0.2-2mm, the 1-75% that the total sectional area of a plurality of through holes (13) is orifice plate single face area.
14. method according to claim 13, wherein, through hole (13) diameter is 0.5-1mm, the 1-50% that the total sectional area of a plurality of through holes (13) is orifice plate single face area.
15., according to the described method of claim 9 or 10, wherein, the bottom of second container (2) is provided with the second gas distributor (14), the second gas distributor (14) is positioned at the port top of the conduit (3) of second container (2) bottom; Test paper (15) is for by the lead acetate paper of the bar shaped of water-wet and be positioned at the top of second container (2).
16. method according to claim 15, wherein, the second gas distributor (14) is surface plate.
17., according to the described method of claim 9 or 10, wherein, the bottom of second container (2) is provided with funnel, Test paper (15) is that lead acetate paper and the inwall of being close to funnel are placed, and the lower port of funnel is communicated with conduit (3).
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