Oil gas treatment device of hot phase separation equipment

Abstract

The utility model provides an oil-gas treatment device of hot phase separation equipment, and belongs to the field of oil-gas condensing equipment, the oil-gas treatment device comprises a condensing tower and a pre-separation pipeline, the condensing tower is located above the pre-separation pipeline, a vertical condensing pipe is inserted into the condensing tower, the vertical condensing pipe is fixedly connected with a transverse condensing pipe, a scraper is arranged outside the vertical condensing pipe, and the transverse condensing pipe is fixedly connected with the pre-separation pipeline. An air inlet pipe and an exhaust pipe are arranged on the side wall of the condensing tower, and the pre-separation pipeline is inclined downwards. The cleaning agent has the beneficial effects that oil stains can be quickly removed, and the later-stage precipitation speed is accelerated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of oil and gas condensing equipment, and in particular to an oil and gas treatment device of a thermal phase separation device. BACKGROUND

[0002] During the extraction and refining process of oil, oily sludge is produced, which is a complex pollutant. If it is directly discharged, it will pollute the environment and damage the soil and water sources. Therefore, the oily sludge is treated using a thermal phase separation technology. After thermal phase separation, the water and oil in the sludge will evaporate to form oil gas, and solid impurities will be separated out. The solid impurities and oil gas are treated separately. The oil gas needs to be condensed to be reconverted into a liquid before subsequent treatment. However, the current oil gas condensing treatment is a conventional condensing process using temperature difference. The oil gas contains water and oil, which will form a water film and ink after condensing. Therefore, the ink will gradually adhere to the condensing pipeline, resulting in a decrease in the condensing efficiency.

[0003] For example, patent CN202211418180.6 uses the contact between the pipeline and hot steam for condensing work. However, the pipeline still cannot overcome the problem of decreased condensing effect caused by ink adhesion during the oil gas condensing process. The structure of the pipeline is easy to adhere to oil stains, and the structure of the pipeline is easy to cause the condensing oil and water to be retained, causing the equipment pipeline to rust or be blocked. Therefore, there is a need for a device that can overcome the adhesion of oil gas to the pipeline and the blockage of the pipeline. SUMMARY

[0004] The present application provides a thermal phase separation device oil gas treatment device that can quickly remove oil stains and accelerate the sedimentation speed in the later stage, especially suitable for oil gas condensing work produced by thermal phase separation of oily sludge. The technical problem to be solved is that the oil gas condensing work in the thermal phase separation of oily sludge will cause the condensing effect to decrease and the pipeline to be blocked due to oil stains.

[0005] The technical solution adopted by the present application is as follows:

[0006] An oil gas treatment device of a thermal phase separation device, comprising a condensing tower and a pre-separation pipeline, the condensing tower being located above the pre-separation pipeline, the condensing tower being inserted into a vertical condensing pipe, the vertical condensing pipe being fixedly connected to a horizontal condensing pipe, a scraper being provided outside the vertical condensing pipe, a condensing tower shell being provided on the side wall of the condensing tower, an air inlet pipe and an air outlet pipe being provided on the condensing tower shell, and the pre-separation pipeline being inclined downward.

[0007] Further, multiple rows of vertical condensing pipes are arranged side by side inside the condensing tower, adjacent two rows of vertical condensing pipes are arranged in a staggered manner, and the vertical condensing pipes in the same row are communicated with the same horizontal condensing pipe.

[0008] Further, the upper end of the vertical condensing pipe is located outside the condensing tower, the lower end of the vertical condensing pipe is located inside the condensing tower, the upper and lower ends of the vertical condensing pipe are connected with the horizontal condensing pipe, and the horizontal condensing pipe at the lower end of the vertical condensing pipe extends out of the condensing tower.

[0009] Further, the bottom of the condensing tower is provided as an inclined surface, and the inclined bottom of the inclined surface is fixedly connected with the pre-separation pipeline.

[0010] Further, the lower end of the inclined surface at the bottom of the condensing tower is fixedly connected with the guide pipe, the pre-separation pipeline comprises the guide pipe and a separation pipeline, the separation pipeline is provided as a rotation-shaped pipeline, and the inside of the separation pipeline is provided with a raised pattern.

[0011] Further, the raised pattern is a high-low undulating grid-shaped stripe, the raised pattern is arranged along the path of the separation pipeline, and the raised pattern is arranged on the lower half of the inner wall of the separation pipeline.

[0012] Further, the scraper is slidingly connected with the slide rod, the upper and lower ends of the slide rod are fixedly connected with the inner wall of the condensing tower respectively, the upper surface of the scraper is fixedly connected with the lifting rod, and the lifting rod penetrates through the upper surface of the condensing tower and is connected with the driver.

[0013] Further, the scraper is provided with a rectangular frame on the inner wall of the condensing tower, the scraper is provided with an annular ring on the outer side of the vertical condensing pipe, and the rectangular frame of the scraper and the annular ring are fixedly connected through the connecting rod.

[0014] Further, the driver adopts a hydraulic device or a motor, the lifting rod adopts a screw rod or a hydraulic rod, the lifting rod adopts the hydraulic rod matched with the hydraulic device of the driver, and the lifting rod adopts the screw rod matched with the motor of the driver.

[0015] Further, the air inlet pipe is arranged at the lower end of the condensing tower shell, the air outlet pipe is arranged at the upper end of the condensing tower shell, and the air inlet pipe and the air outlet pipe are arranged on two opposite side walls of the condensing tower respectively.

[0016] After the above structure is adopted, the following beneficial effects are achieved:

[0017] 1. Since the vertical condensing pipe and the horizontal condensing pipe are adopted, the vertical condensing pipe forms multiple rows and staggered arrangement, which overcomes the problems of easy condensate accumulation and low heat exchange efficiency of the commonly used condensing pipeline, so that the contact area of the condensing pipeline with the gas is greatly increased, the condensation efficiency is effectively improved, the heat exchange efficiency is also improved, and the condensation and heat exchange quality are also greatly increased.

[0018] 2. Because a scraper is used to cover the outside of the vertical condenser tubes, and the scraper is also in close contact with the inner wall of the condenser tower shell, the problem of reduced condensation efficiency caused by oil and gas condensation and adhesion to the outside of the condenser pipes during the heat phase separation process containing sludge in existing condensation equipment is overcome. Thus, the scraper can be used to remove the oil stains adhering to the inner wall of the condenser tube shell and the outside of the vertical condenser tubes, ensuring condensation efficiency.

[0019] 3. By using a pre-separation pipeline to pre-separate the condensate, the problem of excessive time consumption in the subsequent gravity sedimentation of the condensed oil-water mixture discharged from the existing condensation tower is overcome. Thus, the pre-separation pipeline is used to pre-sedimentate and separate the oil-water mixture, reducing the time of subsequent gravity sedimentation and separation and improving the efficiency of gravity sedimentation and separation.

[0020] 4. By using raised textures to transport the oil-water mixture, the problem of ordinary pipeline transportation not helping with oil-water separation and pre-sedimentation is overcome. The raised textures are used to pre-separate the oil and water. Water is transported through the gaps in the textures, and the oil will float to the top. The raised textures increase the contact area between the pipeline and the liquid, and the liquid flow rate is reduced by increasing the pipe wall resistance. Since the slower the flow rate, the better the demulsification effect of the oil-water mixture, it can effectively improve the oil-water separation and demulsification effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is the front view of the present invention;

[0023] Figure 3 This is the right view of the present invention;

[0024] Figure 4 This is the invention Figure 2 Sectional view at point AA;

[0025] Figure 5 This is the invention Figure 2 Sectional view at point BB;

[0026] Figure 6 This is the invention Figure 2 Enlarged view of point C in the middle.

[0027] In the picture:

[0028] 1. Condensing tower; 2. Pre-separation pipe; 3. Condensing tower shell; 4. Vertical condenser pipe; 5. Horizontal condenser pipe; 6. Guide pipe; 7. Separation pipe; 8. Scraper; 9. Sliding rod; 10. Lifting rod; 11. Driver; 12. Inlet pipe; 13. Exhaust pipe; 14. Raised lines. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-6 As shown:

[0031] An oil and gas treatment device for a thermal phase separation equipment includes a condenser tower 1 and a pre-separation pipeline 2. The condenser tower 1 is located above the pre-separation pipeline 2. A vertical condenser pipe 4 is inserted into the condenser tower 1. The vertical condenser pipe 4 is connected to a horizontal condenser pipe 5 via a flange. The vertical condenser pipe 4 is connected to the horizontal condenser pipe 5. A scraper 8 is installed on the outside of the vertical condenser pipe 4. The scraper 8 can scrape off the oil and water adhering to the vertical condenser pipe 4, thereby avoiding the problem of reduced condensation efficiency of the condenser pipeline caused by the adhering substances. A condenser tower shell 3 is installed on the side wall of the condenser tower 1. An air inlet pipe 12 and an exhaust pipe 13 are installed on the condenser tower shell 3. The pre-separation pipeline 2 is inclined downward. An insulation layer is installed on the outside of the condenser tower shell 3.

[0032] The vertical condenser tubes 4 inside the condenser tower 1 are arranged in multiple rows side by side, with adjacent rows of vertical condenser tubes 4 arranged in an alternating pattern. The parallel and staggered arrangement of the vertical condenser tubes 4 increases the contact area between the pipes and the gas, thereby improving the condensation efficiency and the heat exchange efficiency of the vertical condenser tubes 4. The vertical condenser tubes 4 in the same row are connected to the same horizontal condenser tube 5, and multiple horizontal condenser tubes 5 form multiple condensation systems, avoiding the reduction in heat recovery efficiency of a single condensation system due to the increase in the temperature of the pipe in front.

[0033] The upper end of the vertical condenser pipe 4 is located outside the condensation tower 1, and the lower end of the vertical condenser pipe 4 is located inside the condensation tower 1. Both ends of the vertical condenser pipe 4 are connected to the horizontal condenser pipe 5, with the horizontal condenser pipe 5 extending out of the condensation tower 1 from the lower end of the vertical condenser pipe 4. The horizontal condenser pipe 5 is used to transport condensate. Condensation mainly occurs through the vertical condenser pipe 4. Vertical condensation avoids condensed oil and water adhering to horizontal or slightly inclined parts of the pipe, effectively ensuring the condensation effect.

[0034] The bottom of the condenser tower 1 is designed with an inclined surface, and the inclined bottom of the inclined surface is connected to the pre-separation pipe 2 via a flange. The inclined bottom can promote the concentration and discharge of condensed liquid.

[0035] A guide pipe 6 is fixedly connected to the lower end of the inclined surface at the bottom of the condenser tower 1. The guide pipe 6 connects the separation pipe 7 and the condenser tower 1. The pre-separation pipe 2 includes the guide pipe 6 and the separation pipe 7. The separation pipe 7 is designed as a rotary pipe, and the interior of the separation pipe 7 is provided with raised textures 14. The liquid is guided to the bottom of the condenser tower 1 through the guide pipe 6, reducing the space occupation. The rotary separation pipe 7 reduces the space occupation while allowing the condensed liquid to be continuously transported along the pipe. The long-distance slow transport is used to perform gravity sedimentation pre-separation of the condensed liquid. Because the rotation extends the transport length for the same height, it effectively improves the oil-water separation effect. The slower the flow rate, the better the oil-water separation effect. The demulsification effect is best at 0.03-0.05 m / min, which effectively reduces the time of subsequent gravity sedimentation separation.

[0036] The raised texture 14 consists of undulating, grid-like stripes. It is positioned along the path of the separation pipe 7 and located on the lower half of the inner wall of the pipe 7. The raised texture 14 effectively increases the contact area between the inner wall of the pipe and the condensed oil and water, thereby reducing the liquid flow rate due to pipe resistance. Furthermore, the gaps in the texture allow denser water to flow in, while less dense oil floats upwards, resulting in better oil-water separation.

[0037] The scraper 8 is slidably connected to the slide rod 9, with one slide rod 9 located at each of the four corners of the scraper 8. The scraper 8 can slide up and down on the slide rod 9. The upper and lower ends of the slide rod 9 are welded to the inner wall of the condensing tower 1, respectively. The upper surface of the scraper 8 is connected to the lifting rod 10 by screws. The lifting rod 10 passes through the upper surface of the condensing tower 1 and is connected to the driver 11. The driver 11 is used to drive the lifting rod 10.

[0038] The scraper 8 is equipped with a rectangular frame on the inner wall of the condensing tower 1. The rectangular frame can scrape off the oil stains adhering to the outer shell 3 of the condensing tower. The scraper 8 is fitted with an annular ring on the outside of the vertical condensing pipe 4. The annular ring can scrape off the oil stains adhering to the outer wall of the condensing pipe. The rectangular frame and the annular ring of the scraper 8 are fixedly connected as a whole by a connecting rod. Thus, the oil stains adhering to the condensing equipment can be scraped off under the push of the lifting rod 10, thereby ensuring the efficiency and quality of the condensing equipment and avoiding the impact of oil stains on the working quality and efficiency.

[0039] The driver 11 uses a hydraulic device or a motor, and the lifting rod 10 uses a screw or a hydraulic rod. The lifting rod 10 uses a hydraulic rod in conjunction with the hydraulic device of the driver 11. The hydraulic device drives the lifting rod 10 and the scraper 8 more stably. The lifting rod 10 uses a screw in conjunction with the motor of the driver 11. The screw is connected to the upper surface of the condensing tower 1 by a thread. The motor drives the screw to drive the scraper 8.

[0040] The inlet pipe 12 is located at the lower end of the condenser shell 3, and the outlet pipe 13 is located at the upper end of the condenser shell 3. The inlet pipe 12 and the outlet pipe 13 are respectively located on two opposite side walls of the condenser 1. The inlet end of the inlet pipe 12 is designed with a downward inclined structure to prevent the condensed oil and water from flowing back along the inlet pipe 12.

[0041] How this example works:

[0042] During operation, high-temperature oil and gas are introduced into the condenser tower 1 through the inlet pipe 12. The high-temperature oil and gas then pass through the staggered and parallel vertical condenser pipes 4, where condensed oil and water form on the surface of the pipes. Excess gas is discharged through the exhaust pipe 13. The vertical condenser pipes 4 are not horizontally inclined, effectively preventing oil stains from adhering to the outer wall of the pipes and causing a decrease in condensation efficiency. Simultaneously, to overcome the problem of low condensation efficiency due to the small contact area of ​​the vertical pipes, the staggered and parallel pipe structure increases the contact area between the pipes and the gas, thereby increasing condensation efficiency. The vertical condenser pipes transport and discharge condensate through the horizontal condenser pipes 5. Because the density and contact area of ​​the staggered condenser pipes are increased, the heat exchange efficiency of the condenser pipes is effectively improved. The condensate after heat exchange can be discharged through the horizontal condenser pipes 5 for preheating of the thermal phase separation equipment, improving heat utilization and reducing heat waste. Clearing away adhering oil stains effectively ensures the working quality and efficiency of the condensation equipment and extends the time between cleaning and maintenance.

[0043] The condensed oil and water are concentrated on the inclined surface at the bottom of the condenser tower 1 and transported to the guide pipe 6. The guide pipe 6 guides the condensed oil and water to the separation pipe 7. The separation pipe 7 uses a rotary structure to significantly increase the length of liquid transport at the same height. Since the slower the liquid flow speed, the better the oil-water separation effect. At the same time, the slower the liquid flow speed, the better the demulsification effect. Because of the increased transport length, at the same height, not only is the liquid flow velocity reduced, but the contact area between the pipe wall and the oil and water is also increased, thereby further reducing the flow velocity of the oil-water mixture and promoting the separation and demulsification effect of oil and water. The separation pipe 7 also further increases the pipe wall area through the raised texture 14, thereby increasing the contact area between the raised texture 14 and the oil and water, further reducing the flow velocity of oil and water. This ensures that the condensed oil and water are fully separated and demulsified before entering the settling equipment, effectively reducing the subsequent settling time and improving the settling efficiency. The condensation stage discharged from the thermal phase separation equipment serves as a pretreatment for the subsequent settling work, greatly improving the efficiency of the work.

[0044] The directional terms used in this invention, such as "up", "down", "left", and "right", are only for better and clearer explanation and understanding of this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] The preferred embodiments of the present invention have been described above, but should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. An oil and gas treatment device of a thermal phase separation plant, comprising a condensation column (1) and a pre-separation conduit (2), characterized in that: The condensing tower (1) is located above the pre-separation pipeline (2), the condensing tower (1) is inserted into the vertical condensing pipe (4), the vertical condensing pipe (4) is fixedly connected with the horizontal condensing pipe (5), the outer part of the vertical condensing pipe (4) is provided with a scraper (8), the side wall of the condensing tower (1) is provided with a condensing tower shell (3), the condensing tower shell (3) is provided with an air inlet pipe (12) and an air outlet pipe (13). The pre-separation pipeline (2) is inclined downward.

2. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 1, characterized in that: The vertical condensing pipes (4) inside the condensing tower (1) are arranged in multiple rows side by side, adjacent two rows of vertical condensing pipes (4) are arranged staggered, and the vertical condensing pipes (4) in the same row are communicated with the same horizontal condensing pipe (5).

3. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 2, characterised in that: The upper end of the vertical condensing pipe (4) is located outside the condensing tower (1), the lower end of the vertical condensing pipe (4) is located inside the condensing tower (1), the upper and lower ends of the vertical condensing pipe (4) are connected with the horizontal condensing pipe (5), and the horizontal condensing pipe (5) at the lower end of the vertical condensing pipe (4) extends out of the condensing tower (1).

4. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 1, characterized in that: The bottom of the condensing tower (1) is provided as an inclined surface, and the inclined bottom of the inclined surface is fixedly connected with the pre-separation pipeline (2).

5. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 4, characterised in that: The lower end of the inclined surface at the bottom of the condensing tower (1) is fixedly connected with a guide pipe (6), the pre-separation pipeline (2) comprises the guide pipe (6) and a separation pipeline (7), the separation pipeline (7) is provided as a pipeline with a rotary shape, and the inside of the separation pipeline (7) is provided with a raised pattern (14).

6. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 5, characterised in that: The raised pattern (14) is a grid-like stripe with ups and downs, the raised pattern (14) is arranged along the path of the separation pipeline (7), and the raised pattern (14) is arranged on the lower half of the inner wall of the separation pipeline (7).

7. An oil and gas treatment apparatus for a thermal phase separation plant as claimed in claim 1, characterized in that: The scraper (8) is slidingly connected with a sliding rod (9), the upper and lower ends of the sliding rod (9) are respectively fixedly connected with the inner wall of the condensing tower (1), the upper surface of the scraper (8) is fixedly connected with a lifting rod (10), the lifting rod (10) penetrates through the upper surface of the condensing tower (1) and is connected with a driver (11).

8. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 7, characterised in that: The scraper (8) is arranged on the inner wall of the condensing tower (1) and provided with a rectangular frame, the scraper (8) is arranged outside the vertical condensing pipe (4) and provided with an annular ring, and the rectangular frame of the scraper (8) and the annular ring are fixedly connected through a connecting rod.

9. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 8, characterised in that: The driver (11) adopts a hydraulic device or a motor, the lifting rod (10) adopts a screw rod or a hydraulic rod, the lifting rod (10) adopts a hydraulic rod matched with the hydraulic device of the driver (11), and the lifting rod (10) adopts a screw rod matched with the motor of the driver (11).

10. An oil and gas treatment apparatus for a thermal phase separation plant according to claim 1, characterized in that: The air inlet pipe (12) is arranged at the lower end of the condensing tower shell (3), the air outlet pipe (13) is arranged at the upper end of the condensing tower shell (3), and the air inlet pipe (12) and the air outlet pipe (13) are arranged at two opposite side walls of the condensing tower (1).

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