A dust-laden oil and gas scrubbing tower with a collection device

Abstract

This utility model applies to the field of oil and gas recovery equipment, providing a dust-laden oil and gas scrubbing tower with a collection device, including a tower body and a collection tank. The tower body has an exhaust port at the top. The interior of the tower body is divided into a spray zone, a turbulence zone, and a preliminary settling zone from high to low. The spray zone has spray pipes for spraying. The turbulence zone includes a combination of several sets of dust baffles and deflectors arranged around the inner sidewall of the tower body. The preliminary settling zone includes a conical hopper at the bottom of the tower body. A first valve is located at the bottom of the conical hopper. An air inlet is located on the sidewall between the turbulence zone and the preliminary settling zone. The collection tank has an overflow weir, which divides the collection tank into a conical collection tank and a pure oil collection tank. The preliminary settling zone is connected to the conical collection tank via a pipe. A gentle slope is provided in the conical collection tank corresponding to the pipe. Therefore, this device can solve the problems of low fine dust collection rate and easy clogging, achieving continuous purification and reducing equipment operation and maintenance.

Description

Technical Field

[0001] This utility model applies to the field of oil and gas recovery equipment and provides a dust-laden oil and gas scrubbing tower with a collection device. Background Technology

[0002] A dust-laden oil and gas scrubbing tower is a device used to treat waste gas containing oil, gas, and dust, primarily for purifying oil and gas emissions in industrial production. Its function is to remove these substances by having a scrubbing liquid (usually water or a chemical solution) come into contact with the oil, gas, and dust in the waste gas. Dust-laden oil and gas scrubbing towers are commonly used in industries such as petrochemicals, metallurgy, and machining, effectively reducing harmful substances in emissions and protecting the environment.

[0003] The general working principle of a dust-laden oil and gas scrubbing tower is to spray scrubbing liquid into the tower through a spray device. The exhaust gas passes through the packing layer or airflow distribution layer inside the tower and comes into contact with the scrubbing liquid. During this process, oil, gas, and dust particles are adsorbed, decomposed, or dissolved by the scrubbing liquid, thereby removing harmful substances from the exhaust gas. After multiple gas-liquid contacts, the exhaust gas achieves the desired purification effect and is then discharged through the top of the tower. The scrubbing liquid inside the tower is continuously recycled and can be reused after certain treatments.

[0004] However, existing dust-laden oil and gas scrubbing towers have some shortcomings. First, their structure is relatively simple, resulting in low dust collection efficiency and difficulty in effectively removing fine dust particles from exhaust gas. To improve dust removal efficiency, pretreatment facilities such as cyclone separators are usually added at the front end to separate larger dust particles. However, even after pretreatment, dust can still easily be carried into the upper part of the scrubbing tower, causing blockage of the nozzles and packing inside the tower, affecting the normal operation and purification efficiency of the equipment. Utility Model Content

[0005] To address the aforementioned deficiencies, the present invention aims to provide a dust-laden oil and gas scrubbing tower with a collection device, thereby solving the problems mentioned in the background art. The device includes a tower body and a collection tank; an exhaust port is provided at the top of the tower body; the interior of the tower body is divided into a spray zone, a turbulence zone, and a preliminary settling zone from high to low; the spray zone is equipped with spray pipes for spraying; the turbulence zone includes a combination of several sets of dust baffles and deflectors arranged around the inner sidewall of the tower body; the preliminary settling zone includes a conical hopper located at the bottom of the tower body; a first valve is provided at the bottom of the conical hopper.

[0006] The tower body has an air inlet on the side wall between the turbulence zone and the initial settling zone; the collection pool is equipped with an overflow weir, which divides the collection pool into a conical collection pool and a pure oil collection pool; the initial settling zone is connected to the conical collection pool through a pipeline; the conical collection pool is equipped with a gentle slope corresponding to the pipeline.

[0007] Furthermore, a pressure sensor is installed at the top of the tower.

[0008] Furthermore, a first level gauge is installed on the tower body at the corresponding position in the initial settling zone.

[0009] Furthermore, the tower body is provided with a first manhole and a second manhole at the top side wall of the spray zone and at the bottom side wall of the turbulence zone, respectively.

[0010] Furthermore, a second valve is provided at the bottom of the tapered collection pool.

[0011] Furthermore, a third valve is provided on the lower side wall of the pure oil collection tank.

[0012] Furthermore, a sealing cover is installed on the top of the collection tank; the sealing cover is equipped with a second level gauge corresponding to the pure oil collection tank.

[0013] Therefore, this utility model can achieve multi-stage gas-liquid contact and inertial separation of dust-laden oil and gas by sequentially setting a spray zone, a turbulence zone and a preliminary settling zone from top to bottom in the tower. This significantly improves the collection efficiency of fine dust and oil droplets, and solves the problems of low fine particle removal rate and the need for a pre-cyclone separator in the prior art. Through the coupling of the cone at the bottom of the tower and the two-stage collection pool, continuous solid-liquid separation is achieved, avoiding nozzle and pipe blockage caused by excessive solid content in the circulating washing liquid. By utilizing a Tesla-like valve-like flow channel formed by dust baffles and deflectors, dust is forced to accumulate at the bottom of the tower and is discharged in a timely manner, preventing dust from rising and clogging the upper spray device. Through the linkage control of level gauges, pressure sensors, and multiple valves, slag and oil discharge are automated and visualized, reducing manual intervention and the frequency of downtime maintenance. The combination of a sealed collection tank and a demister suppresses gas escape and mist entrainment, reduces the risk of environmental pollution, and stabilizes the system pressure drop, thereby improving the overall purification efficiency, operational stability, and environmental friendliness of the dust-laden oil and gas scrubbing tower. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device structure;

[0015] In the diagram: 01-First valve; 02-Second valve; 03-Third valve; 1-Tower body; 101-First manhole; 102-Second manhole; 103-Air inlet; 11-Exhaust outlet; 111-Pressure sensor; 112-Demister; 12-Cone hopper; 121-First level gauge; 2-Spray pipe; 21-Spray head; 31-Dust baffle; 32-Baffle plate; 4-Collection tank; 401-Overflow weir; 41-Cone collection tank; 42-Pure oil collection tank; 5-Sealing cover; 51-Second level gauge; 6-Demister. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0020] See appendix Figure 1 The purpose of this utility model is to provide a dust-laden oil and gas scrubbing tower with a collection device, including a tower body 1 and a collection tank 4; the top of the tower body 1 is provided with an exhaust port 11. The exhaust port 11 is used to discharge the purified oily gas.

[0021] The interior of the tower body 1 is divided into a spray zone, a turbulence zone, and a preliminary settling zone from top to bottom. The spray zone is equipped with spray pipes 2 for spraying, and several nozzles 21 are installed on the spray pipes 2. The turbulence zone includes a combination of several sets of dust baffles 31 and baffles 32 arranged around the inner side wall of the tower body 1. An air inlet 103 is provided on the side wall between the turbulence zone and the preliminary settling zone of the tower body 1. The air inlet 103 is arranged between the two zones, and untreated dust-laden gas enters through the air inlet 103. At the same time, this position is lower than that of the spray zone, which can effectively intercept liquid droplets and reduce mist entrainment. The preliminary settling zone includes a conical hopper 12 located at the bottom of the tower body 1. A first valve 01 is provided at the bottom of the conical hopper 12.

[0022] Thus, the three zones are connected from top to bottom, forming a purification path of "washing, turbulence, and settling." Dust-laden oil and gas enter through inlet 103, where the gaseous substances rise through the turbulence zone and spray zone for purification. Finally, the clean gas is discharged through outlet 11, resulting in pressure reduction and avoiding secondary entrainment caused by the "full-section mixed washing" of traditional towers. Dust baffles 31 and baffles 32 are arranged alternately, forming a multi-fold flow channel that generates strong turbulence in the airflow. Dust is trapped due to inertial collision with the plate surface, and the oil and gas have increased contact time with droplets due to the extended return path, further improving purification efficiency. At the same time, it prevents particles from directly entering the upper spray zone and causing nozzle blockage. Further upward, nozzles 21 produce a uniform fine mist that fully contacts the dust-laden oil and gas. The droplets form a huge specific surface area in the high-speed airflow, which can quickly capture oil droplets and dust, while absorbing heat from the oil and gas, reducing the gas temperature and the load on subsequent processing. The exhaust port 11 is located at the top of the tower. The oil and gas can be purified by passing through the turbulence zone and the spray zone from bottom to top. The exhaust device reduces the system pressure drop and is then collected by the subsequent collection equipment.

[0023] The intercepted liquid falls into the cone hopper 12 at the bottom of the device and then enters the collection tank 4. The collection tank 4 is equipped with an overflow weir 401, which divides the collection tank 4 into a conical collection tank 41 and a pure oil collection tank 42. The initial settling zone is connected to the conical collection tank 41 via a pipe. A gentle slope is provided within the conical collection tank 41 corresponding to the pipe. The cone hopper 12 utilizes the principle of gravity settling to quickly collect large dust particles in the washed, dust-laden liquid at the cone tip. The conical structure eliminates horizontal dead angles, facilitating subsequent slag discharge and reducing the bottom volume of the tower, thus lowering the overall height of the equipment. The overflow weir 401 forms a two-stage gravity separation: the dust-laden liquid first undergoes secondary settling in the conical collection tank 41, while the oil phase floats due to density differences, and the clean oil phase crosses the weir crest into the pure oil collection tank 42. The gentle slope reduces the liquid flow velocity, decreases turbulence, and allows solid particles to continue settling on the slope, improving the efficiency of secondary separation.

[0024] Preferably, a pressure sensor 111 is provided at the top of the tower body 1. The pressure sensor 111 monitors the pressure drop inside the tower in real time. When the pressure drop increases abnormally, it can provide an early warning of nozzle blockage or packing scaling, which facilitates timely cleaning and ensures continuous operation.

[0025] Preferably, a first level gauge 121 is installed at the corresponding position of the initial settling zone in the tower body 1. The first valve 01 can be opened periodically according to the signal of the first level gauge 121 to discharge high-concentration dust-containing liquid and prevent siltation at the bottom of the tower.

[0026] Preferably, the tower body 1 is provided with a first manhole 101 and a second manhole 102 at the top side wall of the spray zone and the bottom side wall of the turbulence zone, respectively. The two manholes correspond to the spray zone which is prone to clogging and the turbulence zone which is prone to dust accumulation, respectively. Maintenance personnel can enter through these manholes to clean the nozzles, dust baffles, and deflectors, reducing downtime.

[0027] Preferably, a second valve 02 is provided at the bottom of the conical collection tank 41. The second valve 02 is used to periodically discharge the dust-containing concentrated liquid accumulated at the bottom of the conical collection tank 41, so as to realize centralized treatment of solid waste and avoid siltation in the tank.

[0028] Preferably, a third valve 03 is provided on the lower side wall of the pure oil collection tank 42. The third valve 03 can be opened automatically or manually according to the signal of the second level gauge 51 to send the purified clean oil phase to the next process or storage tank, so as to achieve continuous discharge.

[0029] Preferably, a sealing cover 5 is installed on the top of the collection tank 4. A second level gauge 51 corresponding to the pure oil collection tank 42 is provided on the sealing cover 5. The sealing cover 5 prevents oil vapor from evaporating, causing gas leakage and odor, thus meeting environmental protection requirements.

[0030] Preferably, a demister is installed on the top of the spray zone.

[0031] Therefore, this device, by sequentially setting spray zones, turbulence zones, and preliminary settling zones from top to bottom within the tower, enables multi-stage gas-liquid contact and inertial separation of dust-laden oil and gas under the action of reversible airflow. This significantly improves the collection efficiency of fine dust and oil droplets, solving the problems of low fine particle removal rates and the need for pre-cyclone separators in existing technologies. Continuous solid-liquid separation is achieved through the coupling of the bottom conical hopper and two-stage collection tanks, avoiding nozzle and pipe blockage caused by excessively high solid content in the circulating washing liquid. The Tesla-like valve-like flow channel formed by the dust baffle and deflector forces dust to accumulate at the bottom of the tower and be discharged promptly, preventing dust from clogging the upper spray device. Automation and visualization of slag and oil discharge are achieved through the linkage control of level gauges, pressure sensors, and multiple valves, reducing manual intervention and the frequency of downtime maintenance. The combination of a sealed collection tank and a demister suppresses gas escape and mist entrainment, reducing environmental pollution risks and stabilizing system pressure drop, thereby comprehensively improving the purification efficiency, operational stability, and environmental friendliness of the dust-laden oil and gas scrubbing tower.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A dust-laden oil and gas scrubbing column with a belt collection device, characterized in that, It includes a tower body (1) and a collection pool (4); the top of the tower body (1) is provided with an exhaust port (11); the interior of the tower body (1) is divided into a spray zone, a turbulence zone and a preliminary settling zone from high to low; the spray zone is provided with a spray pipe (2) for spraying; the turbulence zone includes a combination of several sets of dust baffles (31) and baffles (32) arranged around the inner side wall of the tower body (1); the preliminary settling zone includes a cone hopper (12) located at the bottom of the tower body (1); the bottom of the cone hopper (12) is provided with a first valve (01); The tower body (1) has an air inlet (103) on the side wall between the turbulence zone and the initial settling zone; the collection pool (4) is provided with an overflow weir (401), which divides the collection pool (4) into a conical collection pool (41) and a pure oil collection pool (42); the initial settling zone is connected to the conical collection pool (41) by a pipeline; the conical collection pool (41) is provided with a gentle slope at the location corresponding to the pipeline.

2. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, A pressure sensor (111) is provided at the top of the tower body (1).

3. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, The tower body (1) is equipped with a first level gauge (121) at the corresponding position in the initial settling zone.

4. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, The tower body (1) is provided with a first manhole (101) and a second manhole (102) at the top side wall of the spray zone and the bottom side wall of the turbulence zone, respectively.

5. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, The bottom of the tapered collection pool (41) is provided with a second valve (02).

6. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, A third valve (03) is provided on the lower side wall of the pure oil collection tank (42).

7. The dust-laden oil and gas scrubbing tower with a collection device according to claim 1, characterized in that, The top of the collection tank (4) is equipped with a sealing cover (5); the sealing cover (5) is equipped with a second level gauge (51) corresponding to the pure oil collection tank (42).

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