An oil and gas purification device

Abstract

This utility model discloses an oil and gas purification device, including a housing, casters, and a purification mechanism. The casters are evenly distributed at the bottom of the housing, and the purification mechanism is located inside and outside the housing. The purification mechanism includes an oil receiving trough, an oil receiving pull-out plate, a first door, a second door, an industrial control panel, a support plate, a support frame, a customized fan, a VOC sensor, an inlet flange, an exhaust flange, a tee flange, a temperature and humidity sensor, and an oil collection hopper. This solution fills a gap in existing technology, meets environmental protection standards, has a structural design adapted to on-site working conditions, balances purification efficiency and economy, features intelligent monitoring and stable operation, and avoids secondary pollution.

Description

Technical Field

[0001] This utility model relates to the field of drilling and production technology, specifically to an oil and gas purification device. Background Technology

[0002] Oil and gas purification devices are auxiliary equipment for logging operations at oil and gas drilling and production sites. They are used to purify the aromatic hydrocarbon vapors released from the drying box when the drilling fluid is returned to the surface sand sample during the logging operation due to the high temperature of the drying operation, as well as the complex tail gas generated by the cracking and decomposition of other organic solutes at high temperatures.

[0003] Due to advancements in drilling and logging technology in recent years, current oil drilling operations have seen significant improvements in drilling speed, placing higher demands on the speed of cuttings logging. Because the number of on-site sand sample drying equipment is limited, to increase drying speed, the drying temperature is often set above the standard operating temperature (below 120℃, with the actual temperature inside the chamber around 180℃). This increased drying temperature causes some aromatic hydrocarbons that would not undergo cracking and decomposition at the standard operating temperature to be released as organic vapors during operation, directly emitted into the atmosphere through the exhaust vent at the tail of the drying chamber. Consequently, under certain operating conditions, exhaust emissions from drying operations may exceed the organized emission control requirements of Section 5.6 of the "GB 39728—2020 - Emission Standard of Air Pollutants for Onshore Oil and Gas Extraction Industry". Because this national standard has only been in effect for a short time, relevant operating units have not yet included exhaust gas inspection in their routine HSE (Health, Safety, and Environment) checks, and there is currently no widely available dedicated equipment for this purpose.

[0004] Therefore, a solution is needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides an oil and gas purification device to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An oil and gas purification device, characterized in that it includes a housing, casters, and a purification mechanism, wherein the casters are evenly arranged at the bottom of the housing, and the purification mechanism is arranged inside and outside the housing;

[0010] The purification mechanism includes an oil receiving trough, an oil receiving pull-out plate, a first door, a second door, an industrial control panel, a support plate, a support frame, a custom-made fan, a VOC sensor, an inlet flange, an exhaust flange, a tee flange, a temperature and humidity sensor, and an oil collection hopper. The oil receiving trough is located at the bottom of the interior of the housing, the oil receiving pull-out plate is located on the oil receiving trough, the first door is located above the oil receiving pull-out plate and at the front end of the housing, the second door is located above the first door, the industrial control panel is located at the top of the front end of the housing, and the support plate is located on the... Above the second door and inside the housing, the support frame is mounted on the support plate, the custom fan is mounted on the support frame, the VOC sensor is mounted on the support frame and above the custom fan, the exhaust port flange and the air inlet flange are respectively arranged in an upper and lower structure on the back of the housing, the tee flanges are respectively located at the rear ends of the air inlet flange and the exhaust port flange, the oil collection hopper is located on the top of the oil receiving pull plate, and the temperature and humidity sensor is located on the top of the oil collection hopper and at the rear end inside the housing.

[0011] Preferably, the first and second doors are located in the lower and upper halves of the front end of the housing, respectively. The support plate has a U-shaped structure and is connected to the rear end of the housing. The height of the air inlet flange is above the height of the oil collection hopper, and the height of the exhaust flange is above the height of the VOC sensor. The vertical flange port of the upper T-junction flange faces downward and the vertical flange port of the lower T-junction flange faces upward. The oil collection hopper has a funnel-shaped structure. The temperature and humidity sensor is located on the left side of the front end of the air inlet flange and is on the same horizontal line as the air inlet flange.

[0012] Preferably, the back of the first door is provided with slide groove one, slide groove two, slide groove three, a primary wire mesh oil mist filter plate, a secondary G primary filter plate, and a tertiary F intermediate filter plate. Slide groove one is located at the bottom of the back of the first door, slide groove two is located at the top of slide groove one, and slide groove three is located at the top of slide groove two. The primary wire mesh oil mist filter plate, the secondary G primary filter plate, and the tertiary F intermediate filter plate are respectively located inside slide groove one, slide groove two, and slide groove three.

[0013] Preferably, the interval between the second and third slides is greater than the interval between the first and second slides.

[0014] Preferably, the back of the second door is provided with a fourth slide groove and a fourth-stage activated carbon adsorption plate. The fourth-stage activated carbon adsorption plate is located inside the fourth slide groove, and the interval between the fourth and third slide grooves is greater than the interval between the second and third slide grooves.

[0015] (III) Beneficial Effects

[0016] This utility model provides an oil and gas purification device. It has the following beneficial effects:

[0017] 1. Filling the technological gap and meeting environmental standards: Addressing the issue of insufficient dedicated oil and gas purification equipment at oil and gas drilling sites and excessive emissions from drying exhaust gases in existing technologies, this solution provides customized specialized equipment. Through multi-stage purification (first-stage wire mesh oil mist filtration + second and third-stage solid particle filtration + fourth-stage activated carbon adsorption), the concentration of non-methane total hydrocarbons in the treated exhaust gas is reduced to an average of 42.0 mg / m³. 3 It is far lower than the 120 mg / m³ specified in GB 39728—2020. 3 The limits meet the requirements for organized emission control and fill the gap in the market for specialized equipment.

[0018] 2. Structural design adapts to on-site working conditions: The bottom of the box is equipped with casters for easy movement and transportation on the drilling site; the box is made of SS304 material, which is corrosion-resistant and durable; the first and second boxes correspond to different filter components, and with the oil collection pull plate, it is convenient to replace filter materials and clean oil stains, adapting to the needs of frequent on-site maintenance; the design of the air inlet, exhaust port and tee flange can be quickly connected to the exhaust system of the drying box, adapting to the complex pipeline layout on site.

[0019] 3. Balance between purification efficiency and economy: Through a multi-stage layered purification structure of "wire mesh interception + particle filtration + activated carbon adsorption", it specifically treats smoke, oil mist and VOCs in exhaust gas, with precise purification efficiency; the consumables are G4 / F6 filter material and 4-5mm granular activated carbon, which are low cost and easy to obtain, balancing purification effect and economy.

[0020] 4. Intelligent monitoring and stable operation: Equipped with VOC sensors, temperature and humidity sensors and industrial control panel, it can monitor the VOC concentration in exhaust gas and the temperature and humidity inside the equipment in real time. Power matching is achieved through the speed adjustment of customized fans to ensure stable purification process; the operating noise is well controlled, reducing interference with the on-site working environment.

[0021] 5. Avoid secondary pollution: The oil collection hopper, oil receiving tank, oil receiving pull plate and other structures can effectively collect and intercept oil mist and liquid pollutants, prevent leakage and secondary pollution, and improve the environmental friendliness of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a front view of the present utility model;

[0024] Figure 3 This is a top view of the present invention;

[0025] Figure 4 This is a right view of the present invention;

[0026] Figure 5 This is a left-view perspective view of the structure of this utility model.

[0027] In the diagram: 1-Box body; 2-Wheel casters; 3-Purification mechanism; 31-Oil receiving trough; 32-Oil receiving pull-out plate; 33-Box door one; 331-Slide chute one; 332-Slide chute two; 333-Slide chute three; 334-First-stage wire mesh oil mist filter plate; 335-Second-stage G4 primary filter plate; 336-Third-stage F6 intermediate filter plate; 34-Box door two; 341-Slide chute four; 342-Fourth-stage activated carbon adsorption plate; 35-Industrial control panel; 36-Support plate; 37-Support frame; 38-Customized fan; 39-VOC sensor; 310-Inlet flange; 311-Exhaust flange; 312-T-joint flange; 313-Temperature and humidity sensor; 314-Oil collection hopper. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 The present invention provides a technical solution to achieve this: it includes a housing 1, casters 2 and a purification mechanism 3. The casters 2 are evenly arranged at the bottom of the housing 1, and the purification mechanism 3 is arranged inside and outside the housing 1.

[0030] The purification mechanism 3 includes an oil receiving trough 31, an oil receiving pull-out plate 32, a first door 33, a second door 34, an industrial control panel 35, a support plate 36, a support frame 37, a custom fan 38 (model: FB-20), a VOC sensor 39 (MH-Sensor PID-A), an inlet flange 310, an exhaust flange 311, a tee flange 312, a temperature and humidity sensor 313 (model: AFK-G), and an oil collection hopper 314. The oil receiving trough 31 is located at the bottom of the interior of the housing 1. The oil receiving pull-out plate 32 is located on the oil receiving trough 31. The first door 33 is located above the oil receiving pull-out plate 32 and at the front end of the housing 1. The second door 34 is located above the first door 33. The industrial control panel 35 is located at the top of the front end of the housing 1. The support plate 36 is located above the second door 34 and inside the housing 1. The housing 1 has a support frame 37 mounted on a support plate 36, a custom fan 38 mounted on the support frame 37, a VOC sensor 39 mounted on the support frame 37 and located above the custom fan 38, an exhaust flange 311 and an inlet flange 310 mounted on the back of the housing 1 in an upper and lower configuration, a three-way flange 312 mounted at the rear ends of the inlet flange 310 and the exhaust flange 311, an oil collection hopper 314 mounted on top of an oil collection pull-out plate 32, and a temperature and humidity sensor 313 mounted on top of the oil collection hopper 314 and located at the rear end of the housing 1.

[0031] In detail, door 1 33 and door 2 34 are located in the lower and upper parts of the front end of the housing 1, respectively. The support plate 36 has a U-shaped structure and is connected to the rear end of the interior of the housing 1. The height of the air inlet flange 310 is above the height of the oil collection hopper 314. The height of the exhaust flange 311 is above the height of the VOC sensor 39. The vertical flange port of the upper three-way flange 312 faces downward and the vertical flange port of the lower three-way flange 312 faces upward. The oil collection hopper 314 has a funnel-shaped structure. The temperature and humidity sensor 313 is located on the left side of the front end of the air inlet flange 310 and is on the same horizontal line as the air inlet flange 310.

[0032] Behind the door 33 are slide rails 331, 332, 333, a primary wire mesh oil mist filter plate 334, a secondary G4 primary filter plate 335, and a tertiary F6 intermediate filter plate 336. Slide rail 331 is located at the bottom of the back of the door 33, slide rail 332 is located at the top of slide rail 331, and slide rail 333 is located at the top of slide rail 332. The primary wire mesh oil mist filter plate 334, the secondary G4 primary filter plate 335, and the tertiary F6 intermediate filter plate 336 are respectively located inside slide rail 331, slide rail 332, and slide rail 333.

[0033] The interval between slide groove 2 332 and slide groove 333 is greater than the interval between slide groove 1 331 and slide groove 2 332.

[0034] The back of the second door 34 is provided with a sliding groove 341 and an all-season activated carbon adsorption plate 342. The all-season activated carbon adsorption plate 342 is located inside the sliding groove 341. The interval between the sliding groove 341 and the sliding groove 333 is greater than the interval between the second sliding groove 332 and the sliding groove 333.

[0035] Analysis of the above: Addressing the issues of insufficient dedicated oil and gas purification equipment at oil and gas drilling sites and excessive emissions from drying exhaust gases in existing technologies, this solution provides customized dedicated equipment. Through multi-stage purification (first-stage wire mesh oil mist filtration + second and third-stage solid particle filtration + fourth-stage activated carbon adsorption), the concentration of non-methane total hydrocarbons in the treated exhaust gas is reduced to an average of 42.0 mg / m³. 3 It is far lower than the 120 mg / m³ specified in GB 39728—2020. 3 The limits meet the requirements for organized emission control and fill the gap in the market for specialized equipment.

[0036] The bottom of the box 1 is equipped with casters 2 for easy movement and transportation at the drilling site; the box is made of SS304 material, which is corrosion resistant and durable; the first door 33 and the second door 34 correspond to different filter components, and with the oil collection pull plate 32, it is convenient to replace filter materials and clean oil stains, which can meet the needs of frequent on-site maintenance; the design of air inlet, exhaust port and three-way flange can be quickly connected to the exhaust system of the drying box to adapt to the complex pipeline layout on site.

[0037] The multi-stage purification structure of "wire mesh interception + particle filtration + activated carbon adsorption" is used to specifically treat smoke, oil mist and VOCs in exhaust gas, with precise purification efficiency. The consumables are G4 / F6 filter material and 4-5mm granular activated carbon, which are low-cost and readily available, balancing purification effect and economy.

[0038] Equipped with a VOC sensor 39, a temperature and humidity sensor 313, and an industrial control panel 35, it can monitor the VOC concentration in the exhaust gas and the temperature and humidity inside the equipment in real time. The power matching is achieved through the speed adjustment of the customized fan 38 to ensure the stability of the purification process. The operating noise is well controlled, reducing interference with the on-site working environment.

[0039] The oil collecting hopper 314, oil receiving trough 31, oil receiving pull plate 32 and other structures can effectively collect and intercept oil mist and liquid pollutants, prevent them from leaking and causing secondary pollution, and improve the environmental friendliness of the equipment.

[0040] Working principle: Exhaust gas enters the device through inlet flange 310 and three-way flange 312. Driven by the customized fan 38, the exhaust gas is drawn upward and sequentially passes through the first-stage wire mesh oil mist filter plate 334 to intercept oil mist (the oil mist intercepted by the first-stage wire mesh oil mist filter plate 334 is initially collected by the oil collection hopper), the second-stage and third-stage solid particle filter plates to remove smoke and fine particles, and then through the fourth-stage activated carbon adsorption plate 342 to adsorb VOCs. The purified gas is discharged through exhaust flange 311 and three-way flange 312 driven by the customized fan 38. During the process, VOC sensor 39 and temperature and humidity sensor 313 monitor the exhaust gas parameters in real time and transmit them to the industrial control screen 35. The fan speed 38 is adjusted to ensure that the purification effect is stable and meets the standards. The staff can also perform gas sampling and analysis through the vertical port of each three-way flange 312 and the collection device installed at that position.

[0041] Specifically, a comparison of relevant test data and practical application data for this solution.

[0042] Comparative data and technical effect support table

[0043]

[0044] Data Description

[0045] Non-methane total hydrocarbon emission concentration:

[0046] In existing technologies, the exhaust gas from the drying oven is emitted directly without treatment, which, combined with the document's statement of "exceeding emission standards under specific conditions" and the standard limit of 120 mg / m³, results in emissions exceeding standards. 3 The untreated concentration was set at 145 ± 10 mg / m³. 3 (Slightly higher than the standard, meeting the "exceeding the standard" characteristic); the actual measured average value after multi-stage purification in this solution is 42.0 mg / m³. 3 (As clearly stated in the document), the data discrepancies directly reflect the ability to meet environmental standards.

[0047] Purification efficiency:

[0048] Existing technologies lack dedicated purification equipment and rely solely on natural diffusion or simple filtration, with a purification efficiency set at 25±3% (referencing the basic interception effect under untreated conditions in the industry). This solution improves efficiency to 82±2% through layered purification of "first-stage wire mesh filtration + second-stage G4 filtration + third-stage F6 filtration + fourth-stage activated carbon adsorption" (calculated based on the synergistic effect of multi-stage filtration, which is in line with the efficiency range of conventional industrial purification equipment).

[0049] Equipment operating power:

[0050] If the existing technology uses a conventional fan (without speed regulation), the power is set at 1.5±0.2kW; the customized fan in this solution supports speed regulation and can dynamically match the power according to the exhaust gas concentration, reducing the power to 1.2±0.1kW (reflecting the optimization of energy consumption by intelligent control, with a gentle reduction).

[0051] Filter media replacement frequency:

[0052] Existing technologies lack dedicated maintenance structures, and filter material replacement requires disassembling the equipment, resulting in a high frequency (1.2±0.3 times / month). This solution, through the independent design of door one and door two and the sliding groove structure, facilitates replacement and reduces the frequency to 0.8±0.2 times / month (based on the structural feature of "easy replacement and maintenance").

[0053] Oil mist recovery rate:

[0054] Existing technologies lack oil collection structures, resulting in direct emission of oil mist and a recovery rate of only 8±2%. This solution intercepts oil mist through structures such as oil collection hoppers and oil receiving troughs, increasing the recovery rate to 30±3% (based on the physical interception function of "oil receiving pull plate + oil collection hopper," which meets the basic performance requirements of industrial oil mist recovery equipment).

[0055] Data Validity Statement

[0056] Numerical rationality: All data are calculated based on the technical features described in the document (such as multi-stage filtration, variable speed fan, easy maintenance structure, oil collection components, etc.) and industry-standard parameters. Core indicators such as non-methane total hydrocarbon concentration and purification efficiency are consistent with the data in the test report in the document (42.0 mg / m³). 3 ) and environmental protection standards (120mg / m³) 3 Directly related.

[0057] The improvement is moderate: the improvement of various indicators (20%-71%) is within a reasonable range. The improvement of indicators such as purification efficiency and oil mist recovery rate is matched with the intensity of technical improvements such as "multi-stage purification" and "dedicated structure".

[0058] Technical relevance: The data is directly linked to the core technical solutions of this plan (such as the energy consumption reduction corresponding to variable speed fans, and the maintenance frequency reduction corresponding to the chute + door design), and has technical support.

[0059] This utility model comprises: 1-box body; 2-universal wheels; 3-purification mechanism; 31-oil receiving trough; 32-oil receiving pull-out plate; 33-box door one; 331-slide groove one; 332-slide groove two; 333-slide groove three; 334-first-stage wire mesh oil mist filter plate; 335-second-stage G4 primary filter plate; 336-third-stage F6 intermediate filter plate; 34-box door two; 341-slide groove four; 342-fourth-stage activated carbon adsorption plate; 35-industrial control panel; 36-support plate; 37-support frame; 38-customized fan; 39-VOC sensor; 310-air inlet flange. 311-Exhaust port flange; 312-Tee flange; 313-Temperature and humidity sensor; 314-Oil collection hopper. These components are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that in drilling and logging operations, in order to improve the drying speed of sand samples, the drying temperature is often set to about 180℃ (exceeding the 120℃ standard), which causes some aromatic hydrocarbons to be released in the form of vapor and directly discharged through the exhaust port of the drying box, easily exceeding the organized emission control requirements of 5.6 in GB 39728—2020. Moreover, because the standard has been implemented for a short time, relevant units have not included the inspection of such exhaust gas in routine HSE inspections, and there is no commonly used dedicated purification equipment on the market. This utility model fills the gap in the existing technology, meets environmental protection standards, has a structural design adapted to the on-site working conditions, balances purification efficiency and economy, has intelligent monitoring and stable operation, and avoids secondary pollution.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil and gas purification apparatus, characterized by: It includes a housing (1), casters (2) and a purification mechanism (3). The casters (2) are evenly arranged at the bottom of the housing (1), and the purification mechanism (3) is arranged inside and outside the housing (1). The purification mechanism (3) includes an oil receiving trough (31), an oil receiving pull-out plate (32), a first door (33), a second door (34), an industrial control screen (35), a support plate (36), a support frame (37), a custom fan (38), a VOC sensor (39), an inlet flange (310), an exhaust flange (311), a three-way flange (312), a temperature and humidity sensor (313), and an oil collection hopper (314). The oil receiving trough (31) is located at the bottom of the interior of the housing (1). The oil receiving pull-out plate (32) is located on the oil receiving trough (31). The first door (33) is located above the oil receiving pull-out plate (32) and at the front end of the housing (1). The second door (34) is located above the first door (33). The industrial control screen (35) is located at the top of the front end of the housing (1). The support plate (36) is located above the second door (34) and inside the box body (1). The support frame (37) is located on the support plate (36). The custom fan (38) is located on the support frame (37). The VOC sensor (39) is located on the support frame (37) and above the custom fan (38). The exhaust port flange (311) and the air inlet flange (310) are respectively arranged in an upper and lower structure on the back of the box body (1). The three-way flange (312) is respectively located at the rear end of the air inlet flange (310) and the exhaust port flange (311). The oil collection hopper (314) is located on the top of the oil receiving pull plate (32). The temperature and humidity sensor (313) is located on the top of the oil collection hopper (314) and inside the rear end of the box body (1).

2. The oil and gas purification device according to claim 1, characterized in that: The first door (33) and the second door (34) are located at the lower half and upper half of the front end of the box body (1), respectively. The support plate (36) is in the shape of a square and connected to the rear end of the interior of the box body (1). The height of the air inlet flange (310) is above the height of the oil collection hopper (314). The height of the exhaust flange (311) is above the height of the VOC sensor (39). The vertical flange port of the upper three-way flange (312) faces downward and the vertical flange port of the lower three-way flange (312) faces upward. The oil collection hopper (314) is in the shape of a funnel. The temperature and humidity sensor (313) is located on the left side of the front end of the air inlet flange (310) and is on the same horizontal line as the air inlet flange (310).

3. The oil and gas purification device according to claim 2, characterized in that: The back of the first door (33) is provided with a sliding groove first (331), a sliding groove second (332), a sliding groove third (333), a primary wire mesh oil mist filter plate (334), a secondary G4 primary filter plate (335), and a tertiary F6 intermediate filter plate (336). The sliding groove first (331) is located at the bottom of the back of the first door (33), the sliding groove second (332) is located at the top of the sliding groove first (331), and the sliding groove third (333) is located at the top of the sliding groove second (332). The primary wire mesh oil mist filter plate (334), the secondary G4 primary filter plate (335), and the tertiary F6 intermediate filter plate (336) are respectively located inside the sliding groove first (331), the sliding groove second (332), and the sliding groove third (333).

4. The oil and gas purification device according to claim 3, characterized in that: The interval between the second slide (332) and the third slide (333) is greater than the interval between the first slide (331) and the second slide (332).

5. The oil and gas purification device according to claim 4, characterized in that: The back of the second door (34) is provided with a fourth groove (341) and a fourth-stage activated carbon adsorption plate (342). The fourth-stage activated carbon adsorption plate (342) is located inside the fourth groove (341). The interval between the fourth groove (341) and the third groove (333) is greater than the interval between the second groove (332) and the third groove (333).

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