Tertiary oil gas recovery membrane group cooling device

Abstract

The utility model provides a cooling device for a tertiary oil gas recovery membrane module. The cooling device comprises a constant-temperature membrane module, a refrigerating unit and a temperature monitoring unit, the constant-temperature membrane assembly is composed of a membrane assembly and a constant-temperature bin, the membrane assembly is connected with the refrigerating unit, and the constant-temperature bin wraps the membrane assembly. The membrane assembly comprises a membrane device and a constant-temperature pipeline, the membrane device is provided with an oil gas inlet, a retentate gas outlet and a permeate gas outlet, and the constant-temperature pipeline is wound on the membrane device and connected with the refrigerating unit. The constant-temperature bin is composed of a bracket, a shell and a heat preservation layer, and the bracket is provided with an installation cavity for containing the film device. The refrigerating unit comprises a compressor and a heat exchanger, the compressor is connected with the membrane device, and the heat exchanger is connected with the compressor. According to the device, the temperature of the constant-temperature membrane assembly is monitored in real time through the temperature monitoring unit, and starting and stopping of the refrigerating unit are controlled, so that the proper working temperature of the membrane assembly is maintained, the oil-gas separation efficiency is improved, the tail gas emission concentration is reduced, the equipment stability is enhanced, and the application environment is widened.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas recovery equipment, specifically to a tertiary oil and gas recovery membrane module cooling device. Background Technology

[0002] Tertiary vapor recovery systems are crucial devices for gas stations to reduce oil and gas emissions and protect the environment. Through a series of physical and chemical processes, they effectively recover and treat oil and gas, converting it into liquid oil for reuse, thereby reducing atmospheric pollution. However, existing tertiary vapor recovery systems use oil-gas separation membranes that are not heat-resistant. In summer, when the equipment is placed in direct sunlight, the internal temperature can reach over 60°C. At ambient temperatures above 45°C, the oil-gas separation efficiency of the modules significantly decreases, and the concentration of exhaust emissions (non-methane total hydrocarbons) exceeds national standards, causing inconvenience in use. Utility Model Content

[0003] The purpose of this invention is to provide a cooling device for a tertiary oil and gas recovery membrane module, thereby solving the aforementioned problems existing in current tertiary oil and gas recovery equipment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cooling device for a tertiary oil and gas recovery membrane module includes a constant-temperature membrane module, a refrigeration unit, and a temperature monitoring unit. Both the temperature monitoring unit and the refrigeration unit are connected to the constant-temperature membrane module. The temperature monitoring unit includes a temperature sensor and a control box. The temperature sensor is connected to the constant-temperature membrane module, and the control box is connected to the refrigeration unit. The control box is used to control the start and stop of the refrigeration unit based on the temperature of the constant-temperature membrane module detected by the temperature sensor. The constant-temperature membrane module includes a membrane assembly and a constant-temperature chamber. The membrane assembly is connected to the refrigeration unit, and the constant-temperature chamber covers the outside of the membrane assembly.

[0006] Furthermore, the membrane assembly includes a membrane device and a thermostatic pipeline. One end of the membrane assembly is provided with an oil and gas inlet, and the other end is provided with a residual gas outlet and a permeate outlet. The thermostatic pipeline is wound around the membrane device and is provided with a refrigerant inlet and a refrigerant outlet. The refrigerant inlet and the refrigerant outlet are connected to the refrigeration unit.

[0007] Furthermore, the constant temperature chamber includes a bracket, a shell, and an insulation layer. The bracket is used to install the membrane assembly, the shell is disposed on the outside of the bracket, and the insulation layer is disposed on the outside of the shell.

[0008] Furthermore, the bracket is provided with an installation cavity for accommodating the membrane device.

[0009] Furthermore, the refrigeration unit includes a compressor and a heat exchanger, the compressor being connected to the membrane device, and the heat exchanger being connected to the compressor.

[0010] The beneficial effects of this utility model are:

[0011] This utility model's tertiary oil-gas recovery membrane module cooling device maintains a stable temperature for the membrane unit through the membrane assembly and constant-temperature chamber within the constant-temperature membrane module. This prevents the performance degradation of the oil-gas separation membrane caused by high temperatures, thereby significantly improving oil-gas separation efficiency. A temperature monitoring unit monitors the temperature of the constant-temperature membrane module in real time and controls the start and stop of the refrigeration unit accordingly, enabling automatic cooling of the module even under intense summer sunlight. This allows the tertiary oil-gas recovery equipment to operate stably in higher-temperature environments, broadening the equipment's application range. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the cooling device for the three-stage oil and gas recovery membrane module of this utility model;

[0013] Figure 2 This is a schematic diagram of the membrane assembly in the tertiary oil and gas recovery membrane cooling device of this utility model;

[0014] Figure 3 This is a schematic diagram of the constant temperature membrane module in the three-stage oil and gas recovery membrane cooling device of this utility model.

[0015] The names corresponding to each mark in the diagram:

[0016] 1. Thermostatic membrane module; 11. Membrane assembly; 111. Membrane unit; 111a. Oil and gas inlet; 111b. Permeate outlet; 111c. Permeate outlet; 112. Thermostatic pipeline; 112a. Refrigerant inlet; 112b. Refrigerant outlet; 121. Bracket; 121a. Mounting cavity; 122. Housing; 123. Insulation layer; 2. Refrigeration unit; 21. Compressor; 22. Heat exchanger; 3. Temperature monitoring unit; 31. Temperature sensor; 32. Control box. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] like Figures 1-3 As shown, a tertiary oil and gas recovery membrane module cooling device includes a constant temperature membrane module 1, a refrigeration unit 2, and a temperature monitoring unit 3. Both the temperature monitoring unit 3 and the refrigeration unit 2 are connected to the constant temperature membrane module 1.

[0019] Figure 1As shown, the temperature monitoring unit 3 includes a temperature sensor 31 and a control box 32. The temperature sensor 31 is connected to the thermostatic membrane assembly 1 and is used to detect the temperature of the thermostatic membrane assembly 1. The control box 32 is connected to the refrigeration unit 2 and is used to control the start and stop of the refrigeration unit 2 according to the temperature of the thermostatic membrane assembly 1 detected by the temperature sensor 31.

[0020] The constant temperature membrane module 1 includes a membrane assembly 11 and a constant temperature chamber. The membrane assembly 11 is connected to the refrigeration unit 2, and the constant temperature chamber covers the outside of the membrane assembly 11 to maintain the temperature stability of the membrane assembly 11.

[0021] Figure 2 As shown, the membrane assembly 11 includes a membrane unit 111 and a thermostatic pipeline 112. One end of the membrane unit 111 is provided with an oil / gas inlet 111a, and the other end is provided with a residual gas outlet 111b and a permeate outlet 111c. The thermostatic pipeline 112 is wound around the membrane unit 111 and is used to cool the membrane unit 111. The thermostatic pipeline 112 is provided with a refrigerant inlet 112a and a refrigerant outlet 112b, which are connected to the refrigeration unit 2 to realize refrigerant circulation.

[0022] Figure 3 As shown, the constant temperature chamber includes a bracket 121, a shell 122, and an insulation layer 123. The bracket 121 is used to mount the membrane assembly 11, ensuring the stability and reliability of the membrane assembly 11. The shell 122 is located outside the bracket 121 and is used to protect the membrane assembly 11 from interference from the external environment. The insulation layer 123 is located outside the shell 122 and is used to improve the insulation performance of the constant temperature chamber and reduce heat loss.

[0023] The bracket 121 is provided with a mounting cavity 121a for accommodating the membrane device 111, ensuring that the membrane device 111 can be securely mounted on the bracket 121.

[0024] The refrigeration unit 2 includes a compressor 21 and a heat exchanger 22. The compressor 21 is connected to the membrane device 111 and provides power for the refrigerant circulation. The heat exchanger 22 is connected to the compressor 21 and enables heat exchange between the refrigerant and the air, thereby reducing the temperature of the refrigerant.

[0025] Working principle:

[0026] During operation, oil and gas enter the membrane unit 111 through the oil and gas inlet 111a. After separation by the membrane unit 111, residual gas is discharged from the residual gas outlet 111b, and permeate is discharged from the permeate outlet 111c. Simultaneously, the temperature sensor 31 monitors the temperature of the thermostatic membrane module 1 in real time and transmits the temperature signal to the control box 32. When the temperature exceeds the set value, the control box 32 controls the refrigeration unit 2 to start, the compressor 21 begins operation, and the refrigerant circulates in the thermostatic pipeline 112, cooling the membrane unit 111. The heat exchanger 22 dissipates the heat from the refrigerant into the air, thereby lowering the refrigerant temperature and cooling the membrane unit 111. When the temperature drops below the set value, the control box 32 controls the refrigeration unit 2 to stop operating, saving energy.

[0027] The cooling device for the three-stage oil and gas recovery membrane module of this invention can effectively solve the problem of reduced oil and gas separation efficiency in existing three-stage oil and gas recovery equipment under high temperature conditions, improve oil and gas recovery efficiency, and protect the environment.

[0028] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model are within the protection scope of this utility model.

Claims

1. A natural gas liquids recovery membrane train cooling apparatus, characterized by: The application relates to a constant-temperature membrane assembly, a refrigerating unit and a temperature monitoring unit, wherein the temperature monitoring unit and the refrigerating unit are connected with the constant-temperature membrane assembly; the temperature monitoring unit comprises a temperature sensor and a control box; the temperature sensor is connected with the constant-temperature membrane assembly; the control box is connected with the refrigerating unit; the control box is used for controlling the start and stop of the refrigerating unit according to the temperature of the constant-temperature membrane assembly detected by the temperature sensor; the constant-temperature membrane assembly comprises a membrane assembly and a constant-temperature bin; the membrane assembly is connected with the refrigerating unit; and the constant-temperature bin is wrapped outside the membrane assembly.

2. The NFGD membrane bank cooling apparatus of claim 1, wherein: The membrane assembly comprises a membrane device and a constant-temperature pipeline; one end of the membrane assembly is provided with an oil-gas inlet; the other end is provided with a residual gas outlet and a permeated gas outlet; the constant-temperature pipeline is arranged on the membrane device; the constant-temperature pipeline is provided with a refrigerant inlet and a refrigerant outlet; and the refrigerant inlet and the refrigerant outlet are connected with the refrigerating unit.

3. The tertiary oil and gas recovery membrane bank cooling apparatus of claim 2, wherein: The constant-temperature bin comprises a bracket, a shell and a heat preservation layer; the bracket is used for mounting the membrane assembly; the shell is arranged outside the bracket; and the heat preservation layer is arranged outside the shell.

4. The NFGD membrane bank cooling apparatus of claim 3, wherein: The bracket is provided with a mounting cavity for accommodating the membrane device.

5. The NFGD membrane bank cooling apparatus of claim 2, wherein: The refrigerating unit comprises a compressor and a heat exchanger; the compressor is connected with the membrane device; and the heat exchanger is connected with the compressor.

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