CN218954625U - But oil-gas separation's intelligent BOG recovery unit - Google Patents
But oil-gas separation's intelligent BOG recovery unit Download PDFInfo
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- CN218954625U CN218954625U CN202222949161.8U CN202222949161U CN218954625U CN 218954625 U CN218954625 U CN 218954625U CN 202222949161 U CN202222949161 U CN 202222949161U CN 218954625 U CN218954625 U CN 218954625U
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Abstract
The utility model discloses an intelligent BOG recovery device capable of separating oil from gas, which comprises an air temperature type gasifier, a low temperature resistant compressor, a metering system, an oil-gas separation device, a bleeding pipeline, a PLC control system and a remote transmission monitoring system, wherein the front end of an inlet of the air temperature type gasifier is provided with a manual gate valve and an electric stop valve A, the rear end of an outlet of the air temperature type gasifier is sequentially connected with an electric stop valve B, Y type filtering valve, the low temperature resistant compressor, an oil-gas separator and a turbine flowmeter, the turbine flowmeter is connected with an urban gas pipe network through a check valve and a 2-time oil-gas separation device, the PLC control system is connected with a pressure sensor, a temperature sensor, an electric valve, an electric stop valve, the low temperature resistant compressor and a turbine flowmeter, and the PLC control system is connected with the remote transmission monitoring system through a communication protocol. The utility model can separate BOG gas from refrigerating machine oil volatilized in the compressor, automatically start and stop the device, record the running data of the device and realize remote monitoring.
Description
Technical Field
The utility model relates to the technical field of BOG recovery, in particular to an intelligent BOG recovery device capable of separating oil from gas.
Background
BOG is a very clean fuel, and the emission of BOG into the air causes resource waste, and the emission of combustible gas into the air has potential danger. LNG receiving station, except gasification pipeline, there will be a large amount of BOG discharge condition at irregular period each year, BOG is concentrated burning treatment through the flare stack at present, this treatment method causes not merely the very big waste of the resource, can also cause a large amount of environmental pollution, because the greenhouse effect coefficient (GWP) of methane is CO 2 21 times of (3). In addition, lng tank tanks also present the problem of handling BOG in the tank in a vented manner. Therefore, the economic significance and the environmental protection significance of BOG recovery are obvious.
The method for recovering the BOG by integrating the nearby natural gas pipe network is more economic and effective under the condition that the surrounding environment has the natural gas pipe network. The existing common intelligent BOG recovery device integrated with a pipe network generally comprises a gasifier, a compressor, a metering device and an intelligent control system, wherein the recovery principle is that BOG is heated by the gasifier and is integrated with a nearby natural gas pipe network after being boosted by the compressor. During operation of the compressor, due to the action of high temperature, part of lubricating oil on the cylinder wall is inevitably discharged together with high-pressure steam through oil vapor and oil drop particles, and the higher the vapor discharge temperature is, the faster the flow speed is, the more lubricating oil is discharged. The operation mode not only affects the service life of the compressor and causes the loss of lubricating oil to be increased, but also can not ensure the purity of gas input into a natural gas pipe network.
Therefore, there is a need for an intelligent BOG recovery device capable of separating oil from gas, which can separate lubricating oil in high-pressure steam discharged from a compressor, so as to ensure safe and efficient operation of the device and purity of natural gas.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an intelligent BOG recovery device capable of separating oil from gas, which has the function of separating lubricating oil in high-pressure steam discharged by a compressor.
In order to solve the technical problems, the utility model provides an intelligent BOG recovery device capable of separating oil from gas, which comprises an air temperature type gasifier, a low temperature resistant compressor, an oil-gas separation device, a metering device, a bleeding system, a PLC control system and a remote transmission monitoring system, and is characterized in that: the intelligent control system is characterized in that a manual gate valve, a bleeding pipeline, an electric valve and an electric stop valve A are arranged at the front end of an inlet of the air temperature type gasifier, an electric stop valve B is arranged at the rear end of an outlet of the air temperature type gasifier, a Y-shaped filter valve, a low temperature resistant compressor, an oil-gas separator, a turbine flowmeter and a 2-time oil-gas separation device are sequentially connected behind the electric stop valve B, the turbine flowmeter is connected with an urban gas pipe network through a check valve and the 2-time oil-gas separation device, a pressure sensor, a temperature sensor, the electric stop valve A, the electric valve, the electric stop valve B, the low temperature resistant compressor and the turbine flowmeter are connected on a PLC control system, the PLC control system is connected with a remote transmission monitoring system through a communication protocol, and data of the whole device in the operation process can be transmitted to the PLC control system and the remote transmission monitoring system, so that remote recording and control are realized.
Further, the manual gate valve and the electric stop valve A are connected in series, and all the pipelines are connected through flanges.
Further, the manual gate valve, the electric stop valve A, the air temperature gasifier, the electric stop valve B, Y type filter valve, the low temperature resistant compressor, the oil-gas separator, the turbine flowmeter, the check valve, the secondary oil-gas separation device and the urban gas pipe network are connected through stainless steel seamless steel pipes, and the pipe fittings are connected with the equipment in a flange connection mode.
Further, a pressure sensor is arranged at the rear end of the electric stop valve A, a temperature sensor and a pressure sensor are arranged at the outlet of the air temperature type gasifier, and a pressure sensor is arranged at the rear end of the low temperature resistant compressor.
Further, the manual gate valve at the front end of the air temperature type gasifier is in a normally open state, a valve can be manually closed in emergency, air inlet of the air temperature type gasifier is controlled by an electric stop valve A, when BOG is recovered, a start button is pressed, the electric stop valve A is opened, a pressure sensor at the front end of an inlet of the air temperature type gasifier is connected with a PLC control system and used for recording inlet pressure of the air temperature type gasifier, the electric stop valve A is connected with the PLC control system, and when the inlet pressure of the gasifier is less than or equal to 0.19MPa, the electric stop valve A is automatically closed.
Further, the pressure sensor and the temperature sensor at the rear end of the outlet of the air temperature type gasifier are connected with the PLC control system and used for controlling the electric stop valve B and the switch of the low temperature resistant compressor, when the pressure at the rear end of the outlet of the air temperature type gasifier is more than 0.19MPa and less than or equal to 20 ℃ and less than or equal to 40 ℃, the electric stop valve B is opened, the low temperature resistant compressor is started, and when the pressure is less than or equal to 0.19MPa or the temperature is less than or equal to-20 ℃ and the temperature is more than 40 ℃, the electric stop valve B is closed, and the low temperature resistant compressor is stopped.
Further, the pressure sensor at the rear end of the outlet of the low-temperature-resistant compressor is connected with the PLC control system and used for recording the outlet pressure of the low-temperature-resistant compressor, and when the outlet pressure of the low-temperature-resistant compressor exceeds 1.2 times of the operating pressure of a pipe network, the PLC control system is used for controlling the shutdown of the low-temperature-resistant compressor.
Further, the oil-gas separator is connected to the rear end of the low temperature resistant compressor outlet, and is used for separating BOG gas from refrigerating machine oil in the compressor. When the compressor compresses the BOG gas to heat the gas, the gas volatilizes and leaves the compressor along with the gas, and the oil-gas separator separates the volatilized oil from the natural gas and returns the volatilized oil to the compressor. When the oil in the compressor is lacked, 3GS refrigerator oil is filled through the oil filling port on the oil-gas separator.
Further, the front end of the air temperature type gasifier is also connected with a bleeding pipeline, an electric valve is arranged on the bleeding pipeline, and the electric valve can be automatically opened when the pressure of the bleeding pipeline exceeds the bleeding pressure, so that the operation safety of the system is ensured.
Furthermore, the turbine flowmeter is used for recording the quantity of recovered BOGs, remote metering and recording of the quantity of recovered BOGs are realized through the PLC control system, daily statement statistics and monthly statement statistics can be formed, meanwhile, a charging system is arranged in the PLC control system, and a unit price setting module is arranged in the charging system.
Furthermore, the 2-time oil-gas separation device is used for further filtering suspended oil particles from the system, so that the whole system discharges purer oilless compressed natural gas, and the safe operation of the urban fuel pipe network is ensured.
Furthermore, the intelligent BOG recovery device capable of separating oil and gas can be connected in parallel, one 2 times of oil and gas separation devices are shared, the intelligent BOG recovery device is uniformly controlled by one remote monitoring system to form a set of large BOG recovery system, the simultaneous recovery of the plurality of BOG recovery devices is realized, and the efficiency and the economic benefit are improved.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model can raise the temperature of the BOG through the air-temperature type gasifier, boost the temperature through the compressor, filter the BOG by the oil-gas separation device, and then integrate the BOG into a nearby urban gas pipe network, automatically control the start and stop of the device in the recovery process, automatically record the operation data of the device, remotely monitor the BOG in real time, and filter suspended oil particles discharged by the compressor, thereby ensuring the safe and efficient operation of the system and the purity of natural gas entering the urban gas pipe network.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Reference numerals in the drawings:
1-hand gate valve 2-electric valve 3-diffusing pipeline
4-electric stop valve A5-air temperature type gasifier 6-electric stop valve B
7-Y type filter valve 8-low temperature resistant compressor 9-oil-gas separator
10-relief valve 11-turbine flowmeter 12-check valve
15-2 times oil-gas separation device of 13-PLC control system 14-remote monitoring system
16-urban gas pipe network.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1, an intelligent BOG recovery device capable of separating oil and gas comprises a bleeding pipeline 3, an air temperature type gasifier 5, a Y-shaped filter valve 7, a low temperature resistant compressor 8, an oil-gas separator 9, a turbine flowmeter 11, a PLC control system 13, a remote transmission monitoring system 14 and a 2-time oil-gas separation device 15, wherein a manual gate valve 1, the bleeding pipeline 3 and an electric stop valve A4 are arranged at the front end of an inlet of the air temperature type gasifier 5, the manual gate valve 1 and the electric stop valve A4 are connected in series, an electric stop valve B6 is arranged at the rear end of an outlet of the air temperature type gasifier 5, the Y-shaped filter valve 7, the low temperature resistant compressor 8, the oil-gas separator 9, a safety valve 10 and the turbine flowmeter 11 are sequentially connected behind the electric stop valve B6, and the turbine flowmeter 11 is connected with a city gas pipe network through a check valve 12 and the 2-time oil-gas separation device 15.
Specifically, the manual gate valve 1, the electric stop valve A4, the air temperature gasifier 5, the electric stop valve B6, the Y-shaped filter valve 7, the low temperature resistant compressor 8, the oil-gas separator 9, the safety valve 10, the turbine flowmeter 11, the check valve 12, the secondary oil-gas separation device 15 and the urban gas pipe network 16 are connected through stainless steel seamless steel pipes, and the connection mode between each pipe fitting and the equipment is flange connection.
Specifically, the rear end of the electric stop valve A4 is provided with a pressure sensor P1, the outlet of the air temperature type gasifier 5 is provided with a temperature sensor T1 and a pressure sensor P2, and the rear end of the low temperature resistant compressor 8 is provided with a pressure sensor P3.
Specifically, the manual gate valve 1 at the front end of the air-temperature type gasifier 5 is in a normally open state, a valve can be manually closed in emergency, air intake of the air-temperature type gasifier 5 is controlled by the electric stop valve A4, when BOG is recovered, a start button is pressed, the electric stop valve A4 is opened, the pressure sensor P1 at the front end of the inlet of the air-temperature type gasifier 5 is connected with the PLC control system 13 and is used for recording the inlet pressure of the air-temperature type gasifier 5, the electric stop valve A4 is connected with the PLC control system 13, and when the inlet pressure of the air-temperature type gasifier 5 is less than or equal to 0.19MPa, the electric stop valve A4 is automatically closed.
Specifically, the pressure sensor P2 and the temperature sensor T1 at the rear end of the outlet of the air-temperature type gasifier 5 are connected with the PLC control system 13 and used for controlling the switch of the electric stop valve B6 and the low-temperature resistant compressor 8, when the pressure at the rear end of the outlet of the air-temperature type gasifier 5 is more than 0.19MPa and less than or equal to 20 ℃ and less than or equal to 40 ℃, the electric stop valve B6 is opened, the low-temperature resistant compressor 8 is started, and when the pressure is less than or equal to 0.19MPa or the temperature is less than or equal to-20 ℃ and more than 40 ℃, the electric stop valve B6 is closed, and the low-temperature resistant compressor 8 is stopped.
Specifically, the pressure sensor P3 at the rear end of the outlet of the low temperature resistant compressor 8 is connected with the PLC control system 13, and is used for recording the outlet pressure of the low temperature resistant compressor 8, and when the outlet pressure of the low temperature resistant compressor 8 exceeds 1.2 times of the operating pressure of the pipe network, the PLC control system 13 is used for controlling the low temperature resistant compressor 8 to stop.
Specifically, the rear end of the outlet of the low temperature resistant compressor 8 is connected with the oil-gas separator 9, which is used for separating engine oil volatilized in the compressor from natural gas and returning the engine oil and the natural gas back to the compressor.
Specifically, the front end of the air-temperature gasifier 5 is also connected with a bleeding pipeline 3, the bleeding pipeline 3 is provided with an electric valve 2, and when the pressure of the bleeding pipeline 3 exceeds the bleeding pressure, the electric valve 2 is automatically opened, so that the operation safety of the system is ensured.
Specifically, the front end of the urban gas pipe network 16 is provided with 2 times of oil-gas separation devices 15 for further filtering suspended oil particles from the system, so as to ensure the safe operation of the urban gas pipe network.
Specifically, the turbine flowmeter 11 is used for recording the recycling amount of BOG, and the remote metering and recording of the recycling amount of BOG are realized through the PLC control system 13, so that daily report statistics and monthly report statistics can be formed, meanwhile, a charging system is arranged in the PLC control system 13, and a unit price setting module is arranged in the charging system.
Specifically, the PLC control system 13 is connected with pressure sensors P1, P2 and P3, a temperature sensor T1, an electric valve 2, an electric stop valve A4, an electric stop valve B6, a low temperature resistant compressor 8 and a turbine flowmeter 11, the PLC control system 13 is connected with the remote monitoring system 14 through a communication protocol, and data of the whole device in the running process can be transmitted to the PLC control system 13 and the remote monitoring system 14 to realize remote recording and control.
Specifically, the intelligent BOG recovery device capable of separating oil from gas can be connected in parallel with a plurality of devices, and the device shares one device for separating oil from gas for 2 times, is uniformly controlled by one remote monitoring system, forms a set of large BOG recovery system, and can realize BOG simultaneous recovery of a plurality of recovery devices.
The working principle of the utility model is as follows: when a start button is pressed, the electric stop valve A4 is automatically opened, BOG enters the air temperature type gasifier 5 to heat, the pressure of the pressure sensor P2 rises, a signal is transmitted to the PLC control system 13, the electric stop valve B6 and the low temperature resistant compressor 8 are controlled to be opened, after the pressure of the low temperature resistant compressor 8 is increased, engine oil volatilized in the compressor is separated from natural gas through the oil-gas separator 9 and returned to the compressor, then the engine oil enters the urban gas pipe network 16 through the turbine flowmeter 11, the check valve 12 and the 2-time oil-gas separation device 15, the engine oil is transmitted to a downstream user, the BOG recovery measured by the turbine flowmeter 11 is transmitted to the PLC control system 13 in the operation process, and the device can realize on-site remote transmission monitoring through the setting of a communication protocol.
The above description is merely of preferred embodiments of the present utility model, and the scope of the present utility model is not limited to the above embodiments, but all equivalent modifications or variations according to the present disclosure will be within the scope of the claims.
Claims (11)
1. The utility model provides an but oil-gas separation's intelligent BOG recovery unit, includes that diffusing pipeline (3), air temperature formula gasifier (5), Y filter valve (7), low temperature resistant compressor (8), oil and gas separator (9), turbine flowmeter (11), PLC control system (13), teletransmission monitored control system (14), 2 oil and gas separation device (15), its characterized in that: the utility model discloses a solar energy power generation system, including air temperature formula gasifier (5), pneumatic valve (1), pneumatic valve (8), gas separator (9), relief valve (10), turbine flowmeter (11) are connected with urban gas pipe network (16) through check valve (12) and 2 oil gas separation device (15), be connected with pressure sensor, temperature sensor, electric valve (2), electric valve A (4), electric valve B (6), low temperature resistant compressor (8), turbine flowmeter (11) are connected with in proper order to air temperature formula gasifier (5) export rear end Y type filtering valve (7), low temperature resistant compressor (8), oil gas separator (9), relief valve (10), turbine flowmeter (11) are connected with urban gas pipe network (16) through check valve (12) and 2 oil gas separation device, be connected with pressure sensor, temperature sensor, electric valve A (4), electric valve B (6), low temperature resistant compressor (8), turbine flowmeter (11) on PLC control system (13) with remote transmission monitored control system (14) pass through the communication agreement.
2. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the manual gate valve (1), the electric stop valve A (4), the air temperature type gasifier (5), the electric stop valve B (6), the Y-shaped filter valve (7), the low temperature resistant compressor (8), the oil-gas separator (9), the safety valve (10), the turbine flowmeter (11), the check valve (12), the secondary oil-gas separation device (15) and the urban gas pipe network (16) are connected through stainless steel seamless steel pipes.
3. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the rear end of the electric stop valve A (4) is provided with a pressure sensor, the outlet of the air temperature type gasifier (5) is provided with a temperature sensor and a pressure sensor, and the rear end of the low temperature resistant compressor (8) is provided with a pressure sensor.
4. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the pressure sensor at the front end of the inlet of the air temperature type gasifier (5) is connected with the PLC control system (13), the electric valve (2) is connected with the PLC control system (13), and the electric stop valve A (4) is connected with the PLC control system (13).
5. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the pressure sensor and the temperature sensor at the rear end of the outlet of the air temperature type gasifier (5) are connected with a PLC control system (13).
6. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: and a pressure sensor at the rear end of the outlet of the low-temperature-resistant compressor (8) is connected with the PLC control system (13).
7. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the turbine flowmeter (11) is connected with the PLC control system (13).
8. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the front end of the air temperature type gasifier (5) is also connected with a bleeding pipeline (3), and the bleeding pipeline (3) is provided with an electric valve (2).
9. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the rear end of the low temperature resistant compressor (8) is connected with an oil-gas separator (9), and the rear end of the oil-gas separator (9) is connected with a safety valve (10).
10. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: the front end of the urban gas pipe network (16) is provided with 2 times of oil-gas separation devices (15).
11. The intelligent BOG recovery device capable of separating oil and gas according to claim 1, wherein: a charging system is arranged in the PLC control system (13), and a unit price setting module is arranged in the charging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222949161.8U CN218954625U (en) | 2022-11-07 | 2022-11-07 | But oil-gas separation's intelligent BOG recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222949161.8U CN218954625U (en) | 2022-11-07 | 2022-11-07 | But oil-gas separation's intelligent BOG recovery unit |
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| Publication Number | Publication Date |
|---|---|
| CN218954625U true CN218954625U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222949161.8U Active CN218954625U (en) | 2022-11-07 | 2022-11-07 | But oil-gas separation's intelligent BOG recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218954625U (en) |
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- 2022-11-07 CN CN202222949161.8U patent/CN218954625U/en active Active
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