Crude oil hydrogen sulfide concentration analysis device

Abstract

The utility model discloses a crude oil hydrogen sulfide concentration analysis device which comprises a crude oil sample bin, crude oil is filled in the crude oil sample bin, and the crude oil sample bin heats the crude oil in the crude oil sample bin through a heater; the oxidation pond is communicated with the crude oil sample bin through a guide pipe, a sodium hypochlorite solution is arranged in the oxidation pond, and a sulfate ion detector is arranged in the oxidation pond; and a display; the display is electrically connected with the heater and the sulfate ion detector through lines respectively; the heating temperature of the heater is displayed through the display; and hydrogen sulfide data obtained by conversion of the sulfate ion concentration in the oxidation pond detected by the sulfate ion detector is displayed by the display. The analysis device disclosed by the utility model can be used for rapidly and quantitatively analyzing the concentration of hydrogen sulfide in crude oil, can be used for continuously detecting a plurality of crude oil samples, and has the advantages of convenience in operation and accurate analysis result.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical technology, and in particular to a crude oil hydrogen sulfide concentration analysis device. Background Technology

[0002] During crude oil extraction and transportation, crude oil is often accompanied by hydrogen sulfide, which has a rotten egg odor. Hydrogen sulfide not only harms the health of production workers and pollutes the environment, but also corrodes and damages equipment used for crude oil extraction and transportation. Therefore, monitoring the concentration of hydrogen sulfide gas in crude oil is essential. Currently, the common method involves setting up an experimental setup in a laboratory, using nitrogen gas to purge the hydrogen sulfide gas, absorbing the hydrogen sulfide with an absorbent liquid, and then detecting it using ion chromatography. However, testing a single crude oil sample requires an entire experimental setup, which is time-consuming and requires significant manpower and resources.

[0003] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a crude oil hydrogen sulfide concentration analysis device. Utility Model Content

[0004] The purpose of this invention is to provide a crude oil hydrogen sulfide concentration analysis device that enables more efficient and accurate detection of hydrogen sulfide content.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a crude oil hydrogen sulfide concentration analysis device, which includes:

[0007] A crude oil sample container, wherein the crude oil sample container is filled with crude oil, and the crude oil inside the crude oil sample container is heated by a heater;

[0008] An oxidation pool connected to the crude oil sample chamber via a conduit, the oxidation pool containing a sodium hypochlorite solution, a sulfate ion detector, and a display;

[0009] The display is electrically connected to the heater and the sulfate ion detector via circuits, respectively.

[0010] The heating temperature of the heater is displayed on the display.

[0011] The hydrogen sulfide data, obtained by converting the sulfate ion concentration in the oxidation pool detected by the sulfate ion detector, is displayed on the monitor.

[0012] Furthermore, the heater is equipped with a jacket, and the crude oil sample chamber is placed inside the jacket of the heater;

[0013] The upper part of the crude oil sample chamber is connected to a sample chamber inlet pipe and a sample chamber outlet pipe. The sample chamber inlet pipe is connected to an external gas source to input nitrogen into the crude oil sample chamber. The sample chamber inlet pipe extends to the bottom of the crude oil sample chamber.

[0014] One end of the sample chamber outlet pipe is connected to the upper part of the crude oil sample chamber, and the other end of the sample chamber outlet pipe extends into the bottom of the oxidation pool. The hydrogen sulfide discharged from the crude oil sample chamber enters the oxidation pool through the sample chamber outlet pipe.

[0015] Furthermore, the volume of the crude oil sample container is 2 ml;

[0016] The oxidation tank contains 200 ml of 50% sodium hypochlorite solution.

[0017] Furthermore, the oxidation tank is connected to the absorption tank via a gas guide pipe;

[0018] One end of the gas guide pipe is connected to the upper part of the oxidation tank, and the other end of the gas guide pipe is connected to the absorption tank, and the absorption tank has an exhaust pipe.

[0019] Furthermore, the external gas source inputs nitrogen into the crude oil sample chamber at a rate of 0.5 ml / s through the sample chamber inlet pipe, and the nitrogen flow time is 10 min.

[0020] The crude oil hydrogen sulfide concentration analysis device provided by this utility model, as described above, has the following beneficial effects:

[0021] The analytical device of this invention can perform rapid quantitative analysis of hydrogen sulfide concentration in crude oil and can continuously test multiple crude oil samples. It has the advantages of convenient operation and accurate analysis results. Attached Figure Description

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 This is a system schematic diagram of a crude oil hydrogen sulfide concentration analysis device disclosed in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Crude oil sample container; 2. Heater; 3. Oxidation tank; 4. Sulfate ion detector; 5. Absorption tank; 6. Display; 7. Circuitry; 8. Gas delivery pipe;

[0026] 101. Sample chamber inlet pipe; 102. Sample chamber outlet pipe. Detailed Implementation

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] See Figure 1 As shown;

[0029] This embodiment discloses a crude oil hydrogen sulfide concentration analysis device, which includes:

[0030] Crude oil sample chamber 1 is filled with crude oil, and the crude oil inside crude oil sample chamber 1 is heated by heater 2.

[0031] An oxidation tank 3, connected to the crude oil sample chamber 1 via a conduit, contains a sodium hypochlorite solution and is equipped with a sulfate ion detector 4; and

[0032] Monitor 6;

[0033] The display 6 is electrically connected to the heater 2 and the sulfate ion detector 1 via line 7;

[0034] The heating temperature of heater 2 is displayed on display 6;

[0035] The concentration of sulfate ions in oxidation pool 3 detected by sulfate ion detector 4 is converted into hydrogen sulfide data, which is then displayed on the screen.

[0036] Specifically, this embodiment further defines the constituent modules of the analytical device from a principle perspective. It mainly consists of a crude oil sample chamber 1, an oxidation pool 3, and a display 6. The crude oil sample chamber 1 is filled with the crude oil to be tested, and the oxidation pool 3 is filled with sodium hypochlorite solution. To ensure the sealing of the modules and the accuracy of the detection data, the connections between the conduits and the corresponding modules in this embodiment require sealing treatment. This can be achieved by screwing the corresponding conduits together to ensure a tight seal. Secondly, a heater 2 is installed in the crude oil sample chamber 1 to heat the crude oil within it. A sulfate ion detector 4 is installed at the bottom of the oxidation pool 3 to detect the sulfate ion concentration over multiple time periods, thereby calculating the hydrogen sulfide data. In this embodiment, the display 6 is electrically connected to both the heater 2 and the sulfate ion detector 4.

[0037] Preferably, from a structural perspective, the heater 2 in this embodiment is provided with a jacket, and the crude oil sample chamber 1 is placed inside the jacket of the heater 2;

[0038] The upper part of the crude oil sample chamber 1 is connected to a sample chamber inlet pipe 101 and a sample chamber outlet pipe 102. The sample chamber inlet pipe 101 is connected to an external gas source to input nitrogen into the crude oil sample chamber 1. The sample chamber inlet pipe 101 extends to the bottom of the crude oil sample chamber 1. Preferably, in this embodiment, the external gas source inputs nitrogen into the crude oil sample chamber 1 through the sample chamber inlet pipe 101 at a rate of 0.5 ml / s, and the nitrogen flow time is 10 min.

[0039] One end of the sample chamber outlet pipe 102 is connected to the upper part of the crude oil sample chamber 1, and the other end of the sample chamber outlet pipe 102 extends into the bottom of the oxidation pool 3. The hydrogen sulfide discharged from the crude oil sample chamber 1 enters the oxidation pool 3 through the sample chamber outlet pipe 102.

[0040] In this embodiment, the crude oil sample chamber 1 has a volume of 2 ml; the oxidation pool 3 contains 200 ml of 50% sodium hypochlorite solution.

[0041] This embodiment uses a high-concentration sodium hypochlorite solution instead of hydrogen peroxide under the original sealed conditions, thereby avoiding the potential risks caused by the generation of oxygen from hydrogen peroxide under sealed conditions and improving safety. Simultaneously, the alkalinity and strong oxidizing properties of sodium hypochlorite further enhance the solidification and conversion of sulfide ions, and the hydrogen ions generated from the reaction of hypochlorite ions with sulfide ions can further catalyze the reaction, mitigating the weakening effect of the conversion caused by the reduced concentration in oxidation pool 3. Ultimately, this achieves more efficient and accurate detection of hydrogen sulfide content.

[0042] Preferably, in this embodiment, the oxidation tank 3 is connected to the absorption tank 5 through the gas guide pipe 8; one end of the gas guide pipe 8 is connected to the upper part of the oxidation tank 3, and the other end of the gas guide pipe 8 is connected to the absorption tank 5, and the absorption tank 5 has an exhaust pipe.

[0043] During operation, first add 2ml of crude oil sample to crude oil sample chamber 1. In this embodiment, a temperature controller is set in the circuit between heater 2 and display 6 to adjust the heating temperature. When adding heavy oil, kerosene can be used for dilution. Add 200ml of 50% sodium hypochlorite solution to oxidation tank 3. Connect the corresponding conduit and sulfate ion detector 4 respectively. After tightening all the screws, turn on the power switch, perform calibration first, and zero the sulfate ion concentration in the system. Open the nitrogen valve and introduce nitrogen. After the nitrogen flows for 10 minutes, click to detect, calculate the sulfate ion concentration, convert the detection data and output the hydrogen sulfide data.

[0044] The concentration of hydrogen sulfide in crude oil is calculated as 100 * (X1 - X0) * 34.08 / 96.06.

[0045] Where: X0 is the concentration measured by the sulfate ion detector before click detection; X1 is the concentration measured by the sulfate ion detector after click detection.

[0046] After clicking "Detect," the concentration of hydrogen sulfide in the crude oil is calculated using an analog-to-digital converter.

[0047] The analytical device of this embodiment is suitable for quantitative testing of hydrogen sulfide concentration in various crude oils. At the same time, the model of this device can also be extended to the detection of gas molecules in liquids. By selecting a suitable solidification absorption cell and ion testing instrument, it can further meet the detection needs of various gas molecules such as carbon dioxide, sulfur dioxide, and hydrogen chloride.

[0048] The crude oil hydrogen sulfide concentration analysis device provided by this utility model, as described above, has the following beneficial effects:

[0049] The analytical device of this invention can perform rapid quantitative analysis of hydrogen sulfide concentration in crude oil and can continuously test multiple crude oil samples. It has the advantages of convenient operation and accurate analysis results.

[0050] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crude oil hydrogen sulfide concentration analysis device, characterized in that, The device includes: A crude oil sample container (1) is filled with crude oil, and the crude oil sample container (1) is heated by a heater (2); An oxidation tank (3) connected to the crude oil sample container (1) via a conduit, wherein a sodium hypochlorite solution is provided in the oxidation tank (3), and a sulfate ion detector (4) is provided in the oxidation tank (3); and Display (6); The display (6) is electrically connected to the heater (2) and the sulfate ion detector (4) via lines (7); The heating temperature of the heater (2) is displayed by the display (6); The hydrogen sulfide data obtained by converting the sulfate ion concentration in the oxidation pool (3) detected by the sulfate ion detector (4) is displayed on the display (6).

2. The crude oil hydrogen sulfide concentration analysis device according to claim 1, characterized in that, The heater (2) is equipped with a jacket, and the crude oil sample chamber (1) is placed inside the jacket of the heater (2); The upper part of the crude oil sample chamber (1) is connected to a sample chamber air inlet pipe (101) and a sample chamber air outlet pipe (102). The sample chamber air inlet pipe (101) is connected to an external air source to input nitrogen into the crude oil sample chamber (1). The sample chamber air inlet pipe (101) extends to the bottom of the crude oil sample chamber (1). One end of the sample chamber outlet pipe (102) is connected to the upper part of the crude oil sample chamber (1), and the other end of the sample chamber outlet pipe (102) extends into the bottom of the oxidation pool (3). The hydrogen sulfide discharged from the crude oil sample chamber (1) enters the oxidation pool (3) through the sample chamber outlet pipe (102).

3. The crude oil hydrogen sulfide concentration analysis device according to claim 2, characterized in that, The volume of the crude oil sample container (1) is 2 ml; The oxidation tank (3) contains 200 ml of 50% sodium hypochlorite solution.

4. The crude oil hydrogen sulfide concentration analysis device according to claim 2, characterized in that, The oxidation tank (3) is connected to the absorption tank (5) through a gas guide pipe (8); One end of the gas guide pipe (8) is connected to the upper part of the oxidation tank (3), and the other end of the gas guide pipe (8) is connected to the absorption tank (5), and the absorption tank (5) has an exhaust pipe.

5. The crude oil hydrogen sulfide concentration analysis device according to claim 3, characterized in that, The external gas source inputs nitrogen into the crude oil sample chamber (1) at a rate of 0.5 ml / s through the sample chamber inlet pipe (101), and the nitrogen flow time is 10 min.

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