A portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields

Abstract

The present application relates to natural gas oxygen content detection field, especially to a kind of portable natural gas oxygen content field detection device suitable for high sulfur gas field.The present application is a kind of portable natural gas oxygen content field detection device suitable for high sulfur gas field, lifting wet desulfurization cabin and washing tower cylinder are integrated on mobile pry dress, dry desulfurization unit, drying unit, detection unit and pressurized storage gas storage container are integrated, first sequentially dry desulfurization treatment, wet desulfurization treatment, drying treatment are carried out to sampled natural gas, then oxygen content detection work is carried out to natural gas, device overall is convenient for field movement, and oxygen content detection work precision is improved 10 times, two-stage desulfurization design makes device still stable operation in the environment where hydrogen sulfide concentration is 100,000 ppm.Overcome the shortcomings that traditional natural gas oxygen content detection work exists poor timeliness, operation is complex, cannot adapt to high sulfur environment, and the precision of portable natural gas oxygen content detection equipment is poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of natural gas oxygen content detection, and particularly relates to a portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields. BACKGROUND

[0002] In the working site of high-sulfur gas fields, instruments are frequently used to extract natural gas samples for natural gas oxygen content detection work. The traditional natural gas oxygen content detection work still needs to send the samples to the laboratory for chromatographic analysis. This processing step has the problems of poor timeliness, complex operation, and inability to adapt to high-sulfur environments. In addition, when the hydrogen sulfide (H2S) concentration exceeds 100 ppm, the sensor of the existing portable natural gas oxygen content detection equipment is easy to be poisoned and fail, and water vapor and acidic gases will interfere with the detection accuracy. In particular, in the operation of sulfur-containing gas fields, excessive oxygen content may cause explosion and pipeline corrosion risks, and there is an urgent need for a detection device that can be quickly and accurately anti-sulfurized on site. SUMMARY

[0003] In order to overcome the shortcomings of the traditional natural gas oxygen content detection work, such as poor timeliness, complex operation, and inability to adapt to high-sulfur environments, and the poor accuracy of the portable natural gas oxygen content detection equipment, the present application provides a portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields.

[0004] The technical scheme of the present application: a portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields, comprising a mobile pry, an electric elevator, a wet desulfurization cabin, a liquid pump, a liquid inlet pipe, a liquid outlet pipe, a sprayer, a washing tower cylinder, an air extractor, a primary cyclone plate, a secondary cyclone plate, a dry desulfurization unit, a drying unit, an air outlet pipe, and a detection unit. The wet desulfurization cabin is fixedly connected to the mobile pry. The wet desulfurization cabin is sequentially provided with a liquid storage cabin structure and a flow collection cabin structure. The liquid storage cabin is filled with alkaline solution. The flow collection cabin is connected with the dry desulfurization unit. The bottom of the flow collection cabin is provided with a plurality of backflow channel structures connecting the liquid storage cabin. The mobile pry is provided with the liquid pump. The wet desulfurization cabin is slidably connected with the washing tower cylinder. The washing tower cylinder is provided with a washing cabin structure connecting the flow collection cabin. The liquid inlet pipe of the liquid pump is connected to the liquid storage cabin. The top of the washing cabin is fixedly connected with the sprayer. The liquid outlet pipe of the liquid pump is connected to the sprayer. The mobile pry is provided with the electric elevator driving the washing tower cylinder to move in the up-down direction. The top of the washing tower cylinder is provided with the air extractor connecting the washing cabin. The washing cabin is sequentially connected with not less than one primary cyclone plate and a plurality of secondary cyclone plates. The mobile pry is provided with the drying unit, which is filled with solid adsorbent. The air outlet port of the air extractor is connected to the air inlet port of the drying unit. The mobile pry is provided with the detection unit. The air outlet port of the drying unit is connected to the air inlet port of the detection unit through the air outlet pipe.

[0005] More preferably, all the secondary cyclone plates are slidingly connected to the washing chamber; a first compression spring is fixedly connected between every two adjacent secondary cyclone plates; a first compression spring is also fixedly connected between the uppermost secondary cyclone plate and the primary cyclone plate; and a first compression spring is also fixedly connected between the lowermost secondary cyclone plate and the surface of the dry desulfurization chamber.

[0006] More preferably, the dry desulfurization unit is composed of a dry desulfurization chamber and a metal oxide desulfurizer; the dry desulfurization chamber is fixedly connected in the current collecting chamber; the dry desulfurization chamber is provided with a desulfurization chamber structure; the desulfurization chamber is filled with the metal oxide desulfurizer; the dry desulfurization chamber is provided with a gas inlet passage structure connecting the desulfurization chamber; and the upper side of the dry desulfurization chamber is provided with a plurality of gas outlet passage structures connecting the desulfurization chamber.

[0007] More preferably, the outer surface of the dry desulfurization chamber is provided with a ring structure shielding all the gas outlet passages.

[0008] More preferably, the desulfurization chamber is provided with a liquid absorbing cotton, and the liquid absorbing cotton is located above the metal oxide desulfurizer.

[0009] More preferably, the desulfurization chamber is slidingly connected with a ring plate, and the bottom of the liquid absorbing cotton is in close contact with the ring plate; a second compression spring is fixedly connected between the ring plate and the desulfurization chamber; an electric push rod is installed in the desulfurization chamber; the extension end of the electric push rod is fixedly connected with a plug plate, the outer diameter of the plug plate is larger than the inner diameter of the ring plate, and the plug plate is located below the ring plate; the middle part of the dry desulfurization chamber is provided with a plurality of liquid outlet passage structures connecting the desulfurization chamber; the liquid outlet passage connects the current collecting chamber, and the port area of the liquid outlet passage connecting the desulfurization chamber is located above the ring plate.

[0010] More preferably, the metal oxide desulfurizer used in the desulfurization chamber is iron oxide particles.

[0011] More preferably, the alkaline solution used in the liquid storage chamber is an ethanolamine solution.

[0012] More preferably, the solid adsorbent used in the drying unit is any one or both of molecular sieve and silica gel adsorbent.

[0013] More preferably, a gas storage container is installed on the moving pry; and the gas outlet port of the detection unit is connected to the gas storage container.

[0014] Beneficial effects: the portable natural gas oxygen content on-site detection device suitable for high-sulfur gas field, which integrates the liftable wet desulfurization cabin and washing tower cylinder, dry desulfurization unit, drying unit, detection unit and pressurized storage gas storage container on the mobile pry, first carries out dry desulfurization treatment, wet desulfurization treatment and drying treatment on the sampled natural gas in sequence, and then carries out oxygen content detection work on the natural gas, the device is convenient to move on site, the oxygen content detection work precision is improved by 10 times, the double-stage desulfurization design makes the device still operate stably in the environment with hydrogen sulfide concentration of 100,000 ppm, and the on-site detection time is less than 5 minutes, which is much less than the 2 hours required by the traditional detection method, realizes monitoring of the oxygen content of produced gas and injection gas, prevents the pipeline corrosion risk caused by excessive oxygen content, avoids the downhole explosion accident caused by oxygen-rich gas, overcomes the defects of the traditional natural gas oxygen content detection work, such as poor timeliness, complex operation and poor adaptability to high-sulfur environment, and the precision of the portable natural gas oxygen content detection equipment is poor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the present application;

[0016] Figure 2 It is a perspective view of the wet desulfurization cabin and washing tower cylinder of the present application;

[0017] Figure 3 It is a front view structure diagram of the dry desulfurization cabin of the present application;

[0018] Figure 4 It is a front view structure section view of the wet desulfurization cabin and washing tower cylinder of the present application;

[0019] Figure 5 It is a perspective view of the first and second cyclone plates of the present application;

[0020] Figure 6 It is a perspective view of the dry desulfurization cabin of the present application;

[0021] Figure 7 It is an explosion view of the liquid absorbing cotton, annular plate, second compression spring, electric push rod and plug plate of the present application.

[0022] Fig. 1: 1 - mobile skid, 11 - electric elevator, 2 - wet desulfurization cabin, 201 - liquid storage cabin, 202 - flow collection cabin, 203 - backflow channel, 21 - liquid transfer pump, 211 - liquid inlet pipe, 212 - liquid outlet pipe, 213 - sprayer, 3 - washing tower cylinder, 301 - washing cabin, 31 - air extractor, 32 - first-stage cyclone plate, 33 - second-stage cyclone plate, 34 - first compression spring, 4 - dry desulfurization cabin, 401 - desulfurization cabin, 402 - air inlet channel, 403 - air outlet channel, 404 - blocking ring, 405 - liquid outlet channel, 41 - metal oxide desulfurizer, 42 - liquid absorbing cotton, 43 - annular plate, 44 - second compression spring, 45 - electric push rod, 46 - blocking plate, 5 - drying unit, 51 - air outlet pipe, 6 - detection unit, 7 - gas storage container. DETAILED DESCRIPTION

[0023] The application will be further described below in connection with the embodiments shown in the drawings.

[0024] Example 1: A portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields, hereinafter referred to as the detection device, as shown in Fig. 1, comprising a mobile skid 1, an electric elevator 11, a wet desulfurization cabin 2, a liquid storage cabin 201, a flow collection cabin 202, a backflow channel 203, a liquid transfer pump 21, a liquid inlet pipe 211, a liquid outlet pipe 212, a sprayer 213, a washing tower cylinder 3, a washing cabin 301, an air extractor 31, a first-stage cyclone plate 32, a second-stage cyclone plate 33, a first compression spring 34, a dry desulfurization cabin 4, a desulfurization cabin 401, an air inlet channel 402, an air outlet channel 403, a blocking ring 404, a liquid outlet channel 405, a metal oxide desulfurizer 41, liquid absorbing cotton 42, an annular plate 43, a second compression spring 44, an electric push rod 45, a blocking plate 46, a drying unit 5, an air outlet pipe 51, a detection unit 6, and a gas storage container 7. Figures 1-5As shown, the mobile skid-mounted device 1, the electric elevator 11, the wet desulfurization cabin 2, the liquid delivery pump 21, the liquid inlet pipe 211, the liquid outlet pipe 212, the sprayer 213, the washing tower cylinder 3, the air extractor 31, the first-stage cyclone plate 32, the second-stage cyclone plate 33, the dry desulfurization unit, the drying unit 5, the air outlet pipe 51, the detection unit 6 and the gas storage container 7 are shown. The wet desulfurization cabin 2 is fixedly connected to the mobile skid-mounted device 1. The liquid storage cabin 201 structure and the flow collection cabin 202 structure are sequentially arranged in the wet desulfurization cabin 2, and the flow collection cabin 202 is located above the liquid storage cabin 201. The alkaline solution is stored in the liquid storage cabin 201. The dry desulfurization unit is connected to the flow collection cabin 202. The backflow channels 203 structures connecting the liquid storage cabin 201 are arranged in the inner bottom of the flow collection cabin 202. The liquid delivery pump 21 is installed on the mobile skid-mounted device 1. The washing tower cylinder 3 is slidably connected to the wet desulfurization cabin 2. The washing tower cylinder 3 is initially in a retracted state of being stored in the wet desulfurization cabin 2. The washing cabin 301 structure connecting the flow collection cabin 202 is arranged in the washing tower cylinder 3. The liquid inlet pipe 211 of the liquid delivery pump 21 connects the liquid storage cabin 201. The sprayer 213 connecting the washing cabin 301 is fixedly connected to the top of the washing cabin 301. The liquid outlet pipe 212 of the liquid delivery pump 21 connects the sprayer 213. The electric elevator 11 is installed on the mobile skid-mounted device 1. The lifting component of the electric elevator 11 is fixedly connected to the washing tower cylinder 3. The air extractor 31 connecting the washing cabin 301 is installed on the top of the washing cabin 301. The first-stage cyclone plate 32 and the five second-stage cyclone plates 33 are sequentially connected in the washing cabin 301. The drying unit 5 is installed on the mobile skid-mounted device 1, and the drying unit 5 is filled with solid adsorbents. The air outlet port of the air extractor 31 connects the air inlet port of the drying unit 5. The detection unit 6 is installed on the mobile skid-mounted device 1. The air outlet port of the drying unit 5 connects the air outlet pipe 51. The air outlet pipe 51 connects the air inlet port of the detection unit 6. The gas storage container 7 is installed on the mobile skid-mounted device 1. The air outlet port of the detection unit 6 connects the air inlet valve component arranged in the gas storage container 7. The pressurizing gas pump component is arranged in the gas storage container 7. The waste natural gas flowing out of the detection unit 6 passes through the air valve component of the gas storage container 7, is pressurized by the pressurizing gas pump component and is stored in the gas storage container 7, so that the natural gas after the oxygen content detection is not directly discharged to the external environment.

[0025] As shown in Figure 5 all the second-stage cyclone plates 33 are slidably connected to the washing cabin 301. Each first compression spring 34 is fixedly connected between every two adjacent second-stage cyclone plates 33, and the first compression spring 34 is initially in a compressed state. The first compression spring 34 is also fixedly connected between the first second-stage cyclone plate 33 on the upper side and the first-stage cyclone plate 32, and the first compression spring 34 is initially in a compressed state. The first second-stage cyclone plate 33 on the lower side is initially in close contact with the surface of the dry desulfurization cabin 4.

[0026] The specific detection steps of the portable natural gas oxygen content on-site detection device suitable for high-sulfur gas fields are as follows.

[0027] Firstly, the staff pushes the moving jack 1 to move the detection device to the on-site detection position, since the washing tower cylinder 3 is initially in the folded state of being folded downward on the wet desulfurization cabin 2, the total height of the detection device is low, and the volume of the whole detection device is small, so that the detection device can be moved flexibly on the compact gas field site, after the moving jack 1 is moved to the specified on-site detection position, the staff controls the electric elevator 11 to drive the washing tower cylinder 3 to rise upward along the wet desulfurization cabin 2, increases the total internal volume of the flow collecting cabin 202 of the wet desulfurization cabin 2 and the washing cabin 301 of the washing tower cylinder 3, and the compressed first compression spring 34 pushes the secondary cyclone plate 33 to extend downward to increase the plate spacing between the adjacent two layers of secondary cyclone plates 33 and the plate spacing between the upper first secondary cyclone plate 33 and the primary cyclone plate 32, the increased plate spacing can provide a wider flow channel for the gas, reduce the flow resistance of the gas between the plates, and thus reduce the overall pressure difference and the operating energy consumption.

[0028] Then the staff starts the infusion pump 21, the air extractor 31 and the pressurized gas pump part in the gas storage container 7, the infusion pump 21 continuously sucks the alkaline solution in the liquid storage cabin 201 through the liquid inlet pipe 211, and simultaneously the infusion pump 21 delivers the sucked alkaline solution to the sprayer 213 through the liquid outlet pipe 212, the sprayer 213 continuously sprays the alkaline solution downward in the washing cabin 301, the sprayed alkaline solution passes through each primary cyclone plate 32 and secondary cyclone plate 33 in turn and accumulates in the flow collecting cabin 202, and then passes through the backflow channel 203 to return to the liquid storage cabin 201, meanwhile the staff connects the dry desulfurization unit in the flow collecting cabin 202 to the natural gas sampling valve at the on-site detection position, continuously delivers the sampled natural gas to the dry desulfurization unit through the natural gas sampling valve at the on-site detection position, and performs dry desulfurization treatment on the natural gas by the dry desulfurization unit, the desulfurized natural gas enters the flow collecting cabin 202 and passes through each secondary cyclone plate 33 and primary cyclone plate 32 from bottom to top, and meanwhile the natural gas is subjected to wet desulfurization treatment by the continuously downward falling alkaline solution in each secondary cyclone plate 33 and primary cyclone plate 32, the double-stage desulfurization treatment makes the hydrogen sulfide content in the natural gas tend to zero.

[0029] The natural gas which has completed the two-stage desulfurization treatment is sucked by the air extractor 31 into the drying unit 5 to complete the moisture drying treatment, and then the dried natural gas enters the detection unit 6 along the gas outlet pipe 51 to perform the detection work. The detection unit 6 is provided with a high-precision electrochemical oxygen sensor. Since the natural gas has completed the two-stage desulfurization treatment, the oxygen content detection work accuracy can be improved by 10 times, and the on-site detection time is less than 5 minutes, which is much less than the 2 hours required by the traditional detection method. Finally, the waste natural gas which has completed the detection is collected and stored in the gas storage container 7.

[0030] In the above embodiment 1, the dry desulfurization unit of the present embodiment includes a dry desulfurization cabin 4, a metal oxide desulfurizer 41, a liquid absorbing cotton 42, an annular plate 43, a second compression spring 44, an electric push rod 45, and a plug plate 46. Figures 1-7 The dry desulfurization cabin 4 is fixedly connected in the current collection cabin 202. The dry desulfurization cabin 4 is provided with a desulfurization cabin room 401 structure. The desulfurization cabin room 401 is filled with the metal oxide desulfurizer 41. The dry desulfurization cabin 4 is provided with an air inlet passage 402 structure connected to the desulfurization cabin room 401. The upper side of the dry desulfurization cabin 4 is provided with a plurality of air outlet passages 403 structures connected to the desulfurization cabin room 401. The outer surface of the dry desulfurization cabin 4 is provided with a ring-shaped blocking ring 404 structure which blocks the alkaline solution falling into the air outlet passage 403. The desulfurization cabin room 401 is provided with the liquid absorbing cotton 42 which is located above the metal oxide desulfurizer 41. The desulfurization cabin room 401 is slidably connected with the annular plate 43, and the bottom of the liquid absorbing cotton 42 is tightly attached to the annular plate 43. The second compression spring 44 is fixedly connected between the annular plate 43 and the desulfurization cabin room 401. The electric push rod 45 is installed in the desulfurization cabin room 401. The telescopic end of the electric push rod 45 penetrates the liquid absorbing cotton 42. The telescopic end of the electric push rod 45 is fixedly connected with the plug plate 46. The outer diameter of the plug plate 46 is larger than the inner diameter of the annular plate 43, and the plug plate 46 is initially located below the annular plate 43, so that a gap is reserved between the plug plate 46 and the annular plate 43. The middle part of the dry desulfurization cabin 4 is provided with a plurality of liquid outlet passages 405 structures connected to the desulfurization cabin room 401. The liquid outlet passage 405 is connected to the current collection cabin 202, and the port area of the liquid outlet passage 405 connected to the desulfurization cabin room 401 is initially located above the annular plate 43.

[0031] The natural gas obtained from continuous sampling is transported to the desulfurization chamber 401 through the inlet channel 402 of the dry desulfurization chamber 4. The natural gas passes through the metal oxide desulfurizing agent 41 from bottom to top for dry desulfurization treatment. After desulfurization, the natural gas flows into the collection chamber 202 through the outlet channel 403 for subsequent wet desulfurization treatment. During the wet desulfurization process of the natural gas, some moisture in the alkaline solution in the collection chamber 202 flows backward through the outlet channel 403 into the desulfurization chamber 401. At this time, the absorbent cotton 42 in the desulfurization chamber 401 absorbs the moisture in time. Then, the electric push rod 45 pulls the plug plate 46 upward to push the annular plate. In step 43, the upward-moving stopper plate 46 blocks the annular plate 43. Then, the electric push rod 45 continues to pull the stopper plate 46 and the annular plate 43 upward, driving the second compression spring 44 to compress. At the same time, the annular plate 43 drives the absorbent cotton 42 to squeeze upward, so that the moisture adsorbed inside the absorbent cotton 42 is squeezed out in liquid form. Finally, the squeezed liquid passes through the liquid outlet channel 405 and is discharged outward back into the collection chamber 202. The squeezed liquid will not pass through the blocked stopper plate 46 and the annular plate 43 and drip down to contact the metal oxide desulfurizer 41, thus avoiding a large amount of moisture entering the desulfurization chamber 401 in reverse, causing the metal oxide desulfurizer 41 to come into contact with a large amount of moisture and become damp.

[0032] Example 3, based on Example 2 above, as follows: Figures 1-7 Figures 1-7 As shown, the metal oxide desulfurizing agent 41 used in the desulfurization chamber 401 of this embodiment is iron oxide particles, which can remove most of the hydrogen sulfide gas in the natural gas; the alkaline solution used in the liquid storage chamber 201 is ethanolamine solution, which can deeply remove hydrogen sulfide gas and carbon dioxide gas in the natural gas; the solid adsorbent built into the drying unit 5 is a molecular sieve and a silica gel adsorbent, both of which can efficiently adsorb and dehydrate the natural gas.

[0033] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields, comprising a mobile skid-mounted component (1); characterized in that: It also includes a wet desulfurization chamber (2); the wet desulfurization chamber (2) is fixedly connected to the mobile skid (1); the wet desulfurization chamber (2) has a liquid storage chamber (201) and a collection chamber (202) in sequence; the liquid storage chamber (201) is filled with an alkaline solution; the collection chamber (202) is connected to a dry desulfurization unit; the bottom of the collection chamber (202) has several return channels (203) that connect to the liquid storage chamber (201); a liquid pump (21) is installed on the mobile skid (1); a washing tower (3) is slidably connected to the wet desulfurization chamber (2); the washing tower (3) has a washing chamber (301) that connects to the collection chamber (202); the inlet pipe (211) of the liquid pump (21) connects to the liquid storage chamber (201); the top of the washing chamber (301) is fixedly connected to the washing chamber. The sprayer (213) of the chamber (301); the outlet pipe (212) of the infusion pump (21) is connected to the sprayer (213); an electric lift (11) is installed on the mobile skid (1) to drive the washing tower (3) to move in the vertical direction; an exhaust fan (31) connected to the washing chamber (301) is installed at the top inside the washing tower (3); at least one primary swirl plate (32) and several secondary swirl plates (33) are connected in sequence inside the washing chamber (301); a drying unit (5) is installed on the mobile skid (1), and the drying unit (5) is filled with solid adsorbent; the exhaust port of the exhaust fan (31) is connected to the air inlet port of the drying unit (5); a detection unit (6) is installed on the mobile skid (1); the exhaust port of the drying unit (5) is connected to the air inlet port of the detection unit (6) through the exhaust pipe (51); All secondary swirl plates (33) are slidably connected to the washing chamber (301); a first compression spring (34) is fixedly connected between each two adjacent secondary swirl plates (33); a first compression spring (34) is also fixedly connected between the first secondary swirl plate (33) on the upper side and the first swirl plate (32); the first secondary swirl plate (33) on the lower side is in close contact with the surface of the dry desulfurization chamber (4).

2. The portable on-site oxygen content detection device for natural gas suitable for high-sulfur gas fields according to claim 1, characterized in that: The dry desulfurization unit consists of a dry desulfurization chamber (4) and a metal oxide desulfurizing agent (41); the dry desulfurization chamber (4) is fixedly connected in the collection chamber (202); the dry desulfurization chamber (4) has a desulfurization chamber (401) structure; the desulfurization chamber (401) is filled with metal oxide desulfurizing agent (41); the dry desulfurization chamber (4) has an air inlet channel (402) structure that connects to the desulfurization chamber (401); the upper side of the dry desulfurization chamber (4) has several air outlet channels (403) structures that connect to the desulfurization chamber (401).

3. The portable on-site oxygen content detection device for natural gas suitable for high-sulfur gas fields according to claim 2, characterized in that: The outer surface of the dry desulfurization chamber (4) is provided with a baffle (404) structure that covers all the gas outlet channels (403).

4. The portable on-site oxygen content detection device for natural gas suitable for high-sulfur gas fields according to claim 2, characterized in that: The desulfurization chamber (401) is equipped with absorbent cotton (42), and the absorbent cotton (42) is located above the metal oxide desulfurizing agent (41).

5. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields according to claim 4, characterized in that: A ring plate (43) is slidably connected inside the desulfurization chamber (401), and the bottom of the absorbent cotton (42) is tightly attached to the ring plate (43); a second compression spring (44) is fixedly connected between the ring plate (43) and the desulfurization chamber (401); an electric push rod (45) is installed inside the desulfurization chamber (401); a plug plate (46) is fixedly connected to the telescopic end of the electric push rod (45), the outer diameter of the plug plate (46) is larger than the inner diameter of the ring plate (43), and the plug plate (46) is located below the ring plate (43); a number of liquid outlet channels (405) structures connected to the desulfurization chamber (401) are opened in the middle of the dry desulfurization chamber (4), the liquid outlet channels (405) are connected to the collection chamber (202), and the port area of ​​the liquid outlet channels (405) connected to the desulfurization chamber (401) is located above the ring plate (43).

6. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields according to claim 2, characterized in that: The metal oxide desulfurizer (41) used in the desulfurization chamber (401) is iron oxide particles.

7. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields according to claim 1, characterized in that: The alkaline solution used in the storage chamber (201) is an ethanolamine solution.

8. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields according to claim 1, characterized in that: The solid adsorbent built into the drying unit (5) is either a molecular sieve or a silica gel adsorbent, or a combination of both.

9. A portable on-site natural gas oxygen content detection device suitable for high-sulfur gas fields according to any one of claims 1-8, characterized in that: A gas storage container (7) is installed on the mobile skid (1); the gas outlet of the detection unit (6) is connected to the gas storage container (7).

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