Oil gas treater

Abstract

The invention provides an oil-gas treater, which comprises a stainless steel tank, an oil-gas inlet pipe, a condensate outlet pipe, an oil-gas exchange coil pipe, an oil-gas collector and a condensate collector, and is characterized in that the stainless steel tank is provided with an accommodating cavity, and the accommodating cavity is filled with heat-carrying liquid; the oil gas inlet pipe and the condensate outlet pipe extend into the containing cavity. The oil-gas exchange coil pipe is located in the containing cavity, and the oil-gas collector is connected between the oil-gas inlet pipe and the upper end of the oil-gas exchange coil pipe. And the condensate collector is connected between the lower end of the oil-gas exchange coil and the condensate outlet pipe. The oil-gas collector is arranged in the stainless steel tank, oil gas entering from the oil-gas inlet pipe firstly enters the oil-gas collector and then flows into the conduction pipes through the oil-gas collector in a distributed mode, the fuel oil gas can flow through the conduction pipes at the same time to exchange heat with heat-carrying liquid in the oil-gas processor, and the recovery rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of gasoline vapor recovery, and particularly relates to a vapor processor. Background Art

[0002] At a gas station, when gasoline is being transported to the gas station's storage tank by a gasoline tanker during refueling or transportation, a certain amount of gasoline vapor is generated. These gasoline vapors are discharged and released into the atmosphere, causing photochemical smog and having an adverse impact on the human body. Currently, a gasoline vapor condensation container is provided. A large amount of low-temperature antifreeze is filled in the gasoline vapor condensation container. The gasoline vapor is passed through a pipe through the gasoline vapor condensation container and condensed and recovered by exchanging heat with the antifreeze. However, currently, basically only one pipe is used to pass through the gasoline vapor condensation container for condensation, resulting in a relatively low amount of gasoline vapor condensed per unit time and low recovery efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a vapor processor that can process the discharged gasoline vapor to achieve the recovery of oil liquid and the clean emission of air.

[0004] To achieve the above and other purposes, the present invention is realized through the following technical solutions: A vapor processor is provided, which includes a stainless steel tank, an oil and gas inlet pipe, the condensate outlet pipe, an oil and gas exchange coil, an oil and gas collector, and a condensate collector. A receiving cavity is provided on the stainless steel tank, and the receiving cavity is filled with a heat-carrying liquid; the oil and gas inlet pipe extends to the inside of the receiving cavity at the top of the stainless steel tank; the condensate outlet pipe extends to the inside of the receiving cavity at the bottom of the stainless steel tank; the oil and gas exchange coil is located inside the receiving cavity, the upper end of the oil and gas exchange coil is connected to the oil and gas inlet pipe, and the lower end of the oil and gas exchange coil is connected to the condensate outlet pipe; the oil and gas collector is arranged inside the receiving cavity, and the oil and gas collector is connected between the oil and gas inlet pipe and the upper end of the oil and gas exchange coil; the condensate collector is arranged inside the receiving cavity, and the condensate collector is connected between the lower end of the oil and gas exchange coil and the condensate outlet pipe.

[0005] Further, the oil and gas exchange coil includes 8 transfer pipes, and the oil and gas collector is connected to the upper ends of the 8 transfer pipes.

[0006] Further, the condensate collector is connected to the lower ends of the 8 transfer pipes.

[0007] Further, the oil and gas recovery system further includes a threaded socket, the threaded socket is located outside the stainless steel tank, and the oil and gas inlet pipe is connected to the threaded socket.

[0008] Further, the eight conduits extend in a folded shape from top to bottom.

[0009] Further, a stainless - steel filter grid is arranged inside the oil - gas collector.

[0010] Further, the stainless - steel tank includes a tank body and a maintenance cover. The accommodation cavity is arranged on the tank body, and the maintenance cover is connected to the top of the accommodation cavity.

[0011] Further, the tank body includes an inner tank body and an outer tank body. The inner tank body is located inside the outer tank body, and a heat - insulating material layer is arranged between the inner tank body and the outer tank body.

[0012] With the present invention, by arranging an oil - gas collector inside the stainless - steel tank, the oil - gas coming in from the oil - gas inlet pipe first enters the oil - gas collector, and then can be distributed through the oil - gas collector and flow into multiple conduits. The fuel oil - gas can simultaneously flow through the multiple conduits and then exchange heat with the heat - carrying liquid inside the oil - gas processor, realizing the condensation of the fuel oil - gas and improving the recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It shows the schematic diagram of the vapor recovery process at the service station of the present invention.

[0014] Figure 2 Shown as Figure 1 the structure diagram of the oil - gas treatment system E in

[0015] Figure 3 Shown as the internal structure diagram after part of the side plate of the oil - gas processor is removed.

[0016] Figure 4 Shown as the overall structure diagram of the oil - gas processor.

[0017] Figure 5 Shown as the overall structure diagram of the refrigeration unit from the first angle.

[0018] Figure 6 Shown as the overall structure diagram of the refrigeration unit from the second angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer to Figures 1 to 6 . The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that many specific details are set forth in the following description to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] The system of the present invention allows for vapor recovery at low temperatures and can handle the vapors generated during the loading and servicing processes at gasoline dispensing stations and centers. The system is installed in the last block of the supply equipment in the vapor recovery vent and pipeline area. The vapor processor 1 can convert these vapors into measurable liquid gasoline.

[0021] The vapor processor 1 includes a tank 10, which is entirely made of stainless steel. According to the existing recovery and exhaust layouts in the factory with different pipelines, its design allows gasoline vapor to flow at a certain speed and pressure for the precipitation of distillates at a sufficient and constant temperature. The resulting product (liquid gasoline) can be brought back to the tank for use. The interior of the vapor processor 1 is filled with a heat-carrying liquid and is connected to the refrigeration unit 2 through a hydraulic system, which ensures a constant temperature for the precipitate. All control sensors are located within the vapor processor 1, the electrical connections do not generate sparks, X-ray inspections are carried out on the welded pipes, and overpressure vacuum valves are installed.

[0022] The refrigeration unit 2, equipped with a heat-carrying fluid cooler, is remotely installed in the designated area and complies with safety regulations and certifications, including ATEX. The refrigeration unit 2 includes all operation control devices and is capable of transmitting the obtained data to the control room via cable or WIFI.

[0023] The only connection between the refrigeration unit 2 and the oil and gas processor 1 is the heat-carrying liquid inlet pipe 3 and the heat-carrying liquid outlet pipe 4. The heat-carrying liquid inlet pipe 3 and the heat-carrying liquid outlet pipe 4 are appropriately insulated to protect against the effects of adverse weather.

[0024] The control system is a display interface, designed and programmed to maintain control over processor variables such as temperature, pressure, flow rate, and voltage, enabling these variables to be displayed in real-time and recorded in a database. It can modify the data through a remote monitoring system.

[0025] Figure 1Shows the generation of gasoline vapor at a gas station, which occurs during two important stages of gas station operation. Stage 1 refers to the discharge of gasoline from tanker A into the fuel tank, i.e., storage tank B of the gas station. During this process, since storage tank B is located on the ground of the gas station, gasoline is released from tanker A to storage tank B by gravity. The impact of the falling liquid generates turbulence, causing evaporation of the liquid inside storage tank B. The second stage of gasoline vapor generation is during the dispensing of gasoline from the dispensing gun G of the fueling column H to the end customer. These accumulated vapors are transported through exhaust pipe C1 to storage tank B to protect the service station from overpressure. The overpressure generated in storage tank B is released to the environment through exhaust pipe C2 and vacuum overpressure valve D. Exhaust pipe C2 is configured with a bypass pipe F that allows part of the gasoline vapor to be transported to the vapor recovery system E. The vapor recovery system E recovers hydrocarbons such as gasoline vapor and is installed within the scope of the service station and distribution center.

[0026] The vapor recovery system E includes the vapor processor 1 and the refrigeration unit 2. The vapor processor 1 and the refrigeration unit 2 are connected by a heat-carrying liquid inlet pipe 3 and a heat-carrying liquid outlet pipe 4. The vapor processor 1 is responsible for internally exchanging heat between the vapor and the heat-carrying liquid, causing the physical state of the vapor to change from gaseous to liquid. This vapor treatment is made possible because of the coordinated operation of the vapor processor 1 and the refrigeration unit 2. The refrigeration unit 2 is responsible for cooling the heat-carrying liquid to a determined and controlled temperature. The heat-carrying liquid is transported to the vapor processor 1 and enables it to exchange heat with the vapor. After the recovery process is completed, the liquid generated by the vapor recovery system E returns to storage tank B. The liquid recovery process is controlled by the control system (J) of the refrigeration unit 2, which can be located in the office of the gas station. In addition, it includes an alarm console K with a DC voltage of 0 - 10V and a current between 4 - 20mA. Accordingly, we can perform low-temperature treatment on gasoline vapor, rather than a very low temperature, which is sufficient to cause a violent and rapid reaction of hydrocarbon vapor.

[0027] Specifically, please refer to Figure 3 , the vapor processor 1 includes a stainless steel tank 10, which is completely made of stainless steel. Referring again to Figure 2The stainless steel tank 10 has a receiving cavity, which is composed of 6 side plates 104 that are perfectly sealed by welding, and the receiving cavity is filled with 100% of the heat-carrying liquid. The heat-carrying liquid is cooled in advance by the refrigeration unit 2, which allows the heat-carrying liquid to maintain a constant temperature and fluidity. An oil-gas exchange coil 12 is arranged inside the stainless steel tank 10, and the oil-gas exchange coil 12 is composed of 8 conductive tubes 121 that are also made of stainless steel, and the 8 conductive tubes 121 extend from top to bottom in a folded shape. The design of the oil-gas exchange coil 12 enables the heat exchange power range to reach 9166w-23650w. The oil-gas processor 1 also includes an oil-gas collector 14, which is arranged inside the receiving cavity, and the oil-gas collector 14 is connected to the upper end of the oil-gas exchange coil 12, that is, the 8 conductive tubes 121 are connected to the oil-gas collector 14 at the upper end. The oil and gas collector 14 is capable of receiving oil and gas velocities in the range of 1 to 17 m / s. The oil and gas collector 14 has a stainless steel network inside, which is responsible for receiving oil and gas flowing at a certain speed and pressure to precipitate distillates at a sufficient and constant temperature. The oil and gas inlet pipe 11 extends from the top of the stainless steel tank 10 to the inside of the accommodating cavity and is connected to the oil and gas collector 14, that is, the oil and gas collector 14 is connected between the oil and gas inlet pipe 11 and the oil and gas exchange coil 12. The oil and gas inlet pipe 11 is connected to the threaded socket outside the stainless steel tank 10, and the threaded socket is used to connect the oil and gas transmission pipeline from the storage tank B. The oil and gas from the storage tank B enter the oil and gas inlet pipe 11 through the threaded socket, and then enter the oil and gas collector 14, and the oil and gas collector 14 distributes the entering oil and gas to 8 conductive pipes 121. Therefore, the oil and gas flow through the 8 conductive pipes 121 and begin to change the physical state after contacting the wall of the conductive pipe 121. Once this journey is completed, the resulting product, i.e., the liquid after the gasoline and oil gas are condensed, is brought to the lower part of the oil-gas exchange coil 12. The condensate outlet pipe 13 extends from the bottom end of the stainless steel tank 10 to the inside of the accommodating chamber and is connected to the lower end of the oil-gas exchange coil 12. These liquids are then transported back to the designated storage tank B of each service station through the condensate outlet pipe 13 for use. The oil-gas processor 1 also includes a condensate collector 15, which is located inside the accommodating chamber and is connected between the oil-gas exchange coil 12 and the condensate outlet pipe 13. The liquid in the oil-gas exchange coil 12 flows by the sum of gravity and pressure and is first collected in the condensate collector 15. These liquids are then transported back to the designated storage tank B of each service station through the condensate outlet pipe 13 for use.

[0028] The stainless steel tank 10 includes a tank body 101 and a maintenance cover 102, and the accommodation cavity is arranged on the tank body 101. The tank body 101 includes an outer tank body 1011 and an inner tank body 1012. It can be understood that the 6 side plates 104 are all double-layered. The outer layers of the 6 side plates 104 form the outer tank body 1011, and the inner layers of the 6 side plates 104 form the inner tank body 1012. An insulating material layer 103 is filled between the inner tank body 1012 and the outer tank body 1011. The maintenance cover 102 is connected to the upper part of the accommodation cavity.

[0029] Figure 5 and Figure 6 are both schematic structural diagrams of the refrigeration unit 2. The refrigeration unit 2 is a general-purpose ethylene glycol refrigerating machine, composed of the basic elements required by such a refrigeration system to perform the task of cooling a specific heat-carrying liquid and generating a refrigeration product capable of carrying hydrocarbon vapor, and includes a hydraulic system that allows the heat-carrying liquid to be transported to the oil and gas processor 1. The refrigeration unit 2 has a control cabinet in which the main control system of the unit is arranged, including a programmable logic controller and a human-machine interface, and the human-machine interface allows the creation of a specific programming code for receiving and processing data received by sensors of the vapor recovery system E. This code is unique and original, allowing us to store data, generate reports, and operate alarms. The control system allows us to measure and record the values of two important variables of the vapor recovery system E, such as the vapor pressure of the system and the flow rate of the liquid recovered through the system. The control system also allows us to control the main operating variable, that is, the temperature of the heat-carrying liquid, and keep it between -5°C and -30°C to meet the heat exchange power of the oil and gas processor 1.

[0030] The refrigeration unit 2 mainly includes the following components: compressor 24, high and low pressure switch, liquid receiver, fan speed controller, voltage transformer, suction device, liquid filter, liquid sight glass, fan, control cabinet, low refrigerant pressure gauge, high refrigerant pressure gauge, pump pressure gauge, pump pressure gauge, heat-carrying liquid inlet connection 22, heat-carrying liquid outlet connection 23, condenser coil 26, hydraulic pump 27, hydraulic pump 28, hydraulic step valve, hydraulic solenoid valve, refrigerant solenoid valve 25, plate heat exchanger 21, heat-carrying liquid pressure tank 29, programmable logic control, display interface - HMI.

[0031] Among them, the heat-carrying liquid inlet 22 is connected to the heat-carrying liquid outlet pipe 4 and the plate heat exchanger 21. The heat-carrying liquid returning from the stainless steel tank 10 successively flows into the plate heat exchanger 21 through the heat-carrying liquid outlet pipe 4 and the heat-carrying liquid inlet 22. The heat-carrying liquid outlet 23 is connected to the plate heat exchanger 21 and the heat-carrying liquid inlet pipe 3. The heat-carrying liquid cooled by the plate heat exchanger 21 successively flows through the heat-carrying liquid outlet 23 and the heat-carrying liquid inlet pipe 3 and then flows into the stainless steel tank 10, so as to condense the gasoline vapor in the oil-gas exchange coil 12. The heat-carrying liquid circulates between the plate heat exchanger 21 and the accommodation cavity through the heat-carrying liquid inlet pipe 3 and the heat-carrying liquid outlet pipe 4. The refrigerant of the refrigeration unit 2 absorbs heat from the heat-carrying liquid and evaporates in the plate heat exchanger 21, thereby reducing the temperature of the heat-carrying liquid. The cooled heat-carrying liquid flows back into the accommodation cavity to condense the gasoline vapor entering the stainless steel tank 10. The refrigerant after absorbing heat and evaporating successively passes through the compressor 24 for compression, then passes through the condenser coil 26 for condensation, then passes through the refrigerant solenoid valve 25 for throttling, and finally returns to the plate heat exchanger 21 to exchange heat with the returning heat-carrying liquid, and circulates in this way. The hydraulic pump 27 and the hydraulic pump 28 are connected in parallel and are connected between the plate heat exchanger 21 and the heat-carrying liquid outlet 23 to provide sufficient head to make the heat-carrying liquid flow into the stainless steel tank 10. The heat-carrying liquid pressure tank 29 is connected between the parallel hydraulic pump 27, the hydraulic pump 28 and the plate heat exchanger 21 and serves as a transfer container for the heat-carrying liquid, which can balance the pressure of the heat-carrying liquid circulation path.

Claims

1. An oil and gas processor, characterized in that: include A stainless steel tank, wherein the stainless steel tank is provided with a receiving cavity filled with a heat-carrying liquid; An oil and gas inlet pipe, the oil and gas inlet pipe extending from the top of the stainless steel tank to the inside of the accommodating cavity; A condensate outlet pipe, the condensate outlet pipe extending from the bottom end of the stainless steel tank to the interior of the accommodating cavity; An oil-gas exchange coil, the oil-gas exchange coil is located in the accommodating cavity, the upper end of the oil-gas exchange coil is connected to the oil-gas inlet pipe, and the lower end of the oil-gas exchange coil is connected to the condensate outlet pipe; An oil and gas collector, the oil and gas collector is arranged inside the accommodating cavity, and the oil and gas collector is connected between the oil and gas inlet pipe and the upper end of the oil and gas exchange coil; A condensate collector is arranged inside the accommodating cavity and is connected between the lower end of the oil-gas exchange coil and the condensate outlet pipe.

2. The oil and gas processor according to claim 1, characterized in that: The oil-gas exchange coil comprises 8 conduction pipes, and the oil-gas collector is connected to the upper ends of the 8 conduction pipes.

3. The oil and gas processor according to claim 2, characterized in that: The condensate collector is connected to the lower ends of the eight conducting pipes.

4. The oil and gas processor according to claim 1, characterized in that: The oil and gas recovery system also includes a threaded socket, which is located on the outside of the stainless steel tank, and the oil and gas inlet pipe is connected to the threaded socket.

5. The oil and gas processor according to claim 3, characterized in that: The 8 conductive tubes extend from top to bottom in a folded shape.

6. The oil and gas processor according to claim 1, characterized in that: A stainless steel filter grid is arranged in the oil and gas collector.

7. An oil and gas processor according to any one of claims 1 to 6, characterized in that: The stainless steel tank comprises a tank body and a maintenance cover, the accommodating cavity is arranged on the tank body, and the maintenance cover is connected to the top of the accommodating cavity.

8. The oil and gas processor according to claim 7, characterized in that: The tank body comprises an inner tank body and an outer tank body, the inner tank body is located inside the outer tank body, and a heat insulation material layer is arranged between the inner tank body and the outer tank body.

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