CN217587085U - System for effectively controlling oxygen content of storage and transportation oil gas recovery/treatment equipment - Google Patents
System for effectively controlling oxygen content of storage and transportation oil gas recovery/treatment equipment Download PDFInfo
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- CN217587085U CN217587085U CN202123226746.9U CN202123226746U CN217587085U CN 217587085 U CN217587085 U CN 217587085U CN 202123226746 U CN202123226746 U CN 202123226746U CN 217587085 U CN217587085 U CN 217587085U
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Abstract
The utility model discloses a system for effectively controlling the oxygen content of storage and transportation oil gas recovery/treatment equipment, which is characterized by comprising an oil gas storage and transportation tank, oxygen content detection equipment and oil gas recovery/treatment equipment, wherein the output end of the oil gas storage and transportation tank is connected with an oil gas recovery pipeline, and the output end of the oil gas recovery pipeline is connected with the oil gas recovery/treatment equipment; the oil gas recovery pipeline is provided with oxygen content detection equipment, the output end of the oxygen content detection equipment is connected with the control loop, the control loop is provided with the PLC, the output end of the control loop is connected with the inert gas regulating valve and used for regulating the opening degree of the inert gas regulating valve and further controlling the input quantity of inert gas, and the output end of the inert gas regulating valve is connected with the oil gas recovery pipeline. The utility model provides a during the oil loading operation, oil gas and air mixed gas take place the condition of flashover probably take place for oil gas recovery processing equipment, avoid the problem that the incident takes place, guarantee storage and transportation tank district system safe and stable operation.
Description
Technical Field
The utility model belongs to the field of petrochemical, specifically is a system for effectively controlling oxygen content of warehousing and transportation oil gas recovery/treatment equipment.
Background
For the petrochemical industry, the storage and transportation tank area is an important link for ensuring stable operation of supply, production and sale of factories on a daily basis, and the number of oil transactions performed through storage, transportation, loading and unloading operations every day is not sufficient. In the petrochemical industry safety field, the storage and transportation tank area is also characterized as a major hazard source, so that each potential safety hazard problem related to the storage and transportation system is mainly solved by enterprises.
In the industry, the storage and transportation of gasoline and diesel oil, wax oil, fuel oil and other oil products are generally carried out by adopting an atmospheric tank car. In the loading process, along with the oil product entering the tank, the original oil gas in the tank enters the oil gas recovery unit through the oil gas recovery pipeline of the storage and transportation system for environment-friendly treatment. However, because the tank car storage tank is a normal pressure tank, when the tank car is empty, a certain amount of air is often mixed in the storage tank, and along with the loading operation, the mixed gas formed by oil gas and air enters the oil gas recovery unit through the oil gas treatment pipeline. If static electricity is generated by mixed fluid in a pipeline or sparks generated by equipment operation friction, mixed gas can be instantaneously flashed, and irreparable results are caused.
SUMMERY OF THE UTILITY MODEL
For when solving oil loading operation, oil gas recovery processing apparatus probably takes place oil gas and air gas mixture and takes place the condition of exploding of twinkling of an eye, avoids the problem that the incident takes place, the utility model provides a system of effective control warehousing and transportation oil gas recovery processing apparatus oxygen content has promoted whole oil gas recovery processing apparatus's safe running state, the safe and stable operation of guarantee warehousing and transportation tank field system.
A system for effectively controlling the oxygen content of an oil gas storage and transportation recovery/treatment facility comprises an oil gas storage and transportation tank, an oxygen content detection device and an oil gas recovery/treatment device, wherein the output end of the oil gas storage and transportation tank is connected with an oil gas recovery pipeline, and the output end of the oil gas recovery pipeline is connected with the oil gas recovery/treatment device;
the oil gas recovery pipeline is provided with oxygen content detection equipment, the output end of the oxygen content detection equipment is connected with a control loop, a PLC (programmable logic controller) is arranged on the control loop, the output end of the control loop is connected with an inert gas regulating valve, the input end of the inert gas regulating valve is connected with inert gas, and the output end of the inert gas regulating valve is connected with the oil gas recovery pipeline; the oxygen content detection equipment is used for detecting the oxygen content of the oil gas recovery pipeline, transmitting a detected oxygen content signal to the PLC, transmitting the signal to the inert gas regulating valve actuating mechanism by the PLC at once, making effective adjustment by regulating the opening degree of the inert gas regulating valve, and controlling the input quantity of the inert gas by regulating the opening degree of the inert gas regulating valve.
Further, the oil and gas storage and transportation tank is an oil and gas storage and transportation tank on an oil and gas storage and transportation tank car.
Further, the oxygen content detection device is a high-precision oxygen content analyzer.
Furthermore, an oil gas recovery pipeline regulating valve is arranged on the oil gas recovery pipeline and used for controlling the oil gas recovery pipeline regulating valve to be close to the output end of the oil gas storage and transportation tank.
Further, the oxygen content detection equipment is arranged on a straight pipe with the length being more than 1 meter.
Further, the inert gas is nitrogen.
The utility model has the advantages that:
1. by reforming the oil gas recovery pipeline, the oxygen content detection equipment of the oil gas recovery/treatment equipment is additionally arranged, and a safety set value is set. When loading operation starts, along with the operation of the oil gas recovery/treatment equipment, if the oxygen content in the recovered gas is detected to be increased, inert gas (nitrogen) is controlled by an inert gas regulating valve to be supplemented into an oil gas recovery pipeline, so that the oxygen content is recovered to be below a safety set value.
2. In the current oil gas recovery/treatment facility, do not consider the control of oxygen content in the recovery oil gas, also do not set up inert gas's urgent supplementary pipeline, and pass through the utility model discloses an improve, successfully compensate the defect among the prior art, effectively promoted the safety guarantee level of warehousing and transportation loading operation link, take place the incident when avoiding retrieving oil gas.
Drawings
FIG. 1 is a schematic diagram of a system for effectively controlling the oxygen content of a storage and transportation hydrocarbon recovery/processing facility in accordance with the present invention;
FIG. 2 is a schematic diagram of a control circuit according to the present invention;
in the figure: 1. a tank car oil gas port; 2. an oil and gas storage and transportation tank car; 3. an oil gas recovery pipeline; 4. an inert gas regulating valve; 5. an oxygen content detection device; 6. oil gas recovery/treatment equipment, 7. Inert gas; 8. and a control loop.
Detailed Description
The following non-limiting examples will allow one of ordinary skill in the art to more fully understand the present invention without limiting it in any way.
Example 1
A system for effectively controlling the oxygen content of storage and transportation oil gas recovery/treatment equipment comprises an oil gas storage and transportation tank, oxygen content detection equipment 5 and oil gas recovery/treatment equipment 6, wherein the oil gas storage and transportation tank is an oil gas storage and transportation tank on an oil gas storage and transportation tank car 2, the output end (a tank car oil gas port 1) of the oil gas storage and transportation tank is connected with an oil gas recovery pipeline 3, and the output end of the oil gas recovery pipeline 3 is connected with the oil gas recovery/treatment equipment 6; an oxygen content detection device 5 is arranged on the oil gas recovery pipeline 3, the output end of the oxygen content detection device 5 is connected with a control loop 8, a PLC (programmable logic controller) is arranged on the control loop 8, the output end of the control loop 8 is connected with an inert gas regulating valve 4, the input end of the inert gas regulating valve 4 is connected with an inert gas (nitrogen) 7, and the output end of the inert gas regulating valve 4 is connected with the oil gas recovery pipeline 3; the oxygen content detection device 5 is used for detecting the oxygen content of the oil gas recovery pipeline 3, transmitting a detected oxygen content signal to the PLC controller, transmitting the signal to the actuating mechanism of the inert gas regulating valve 4 by the PLC controller immediately, and controlling the input amount of the inert gas (nitrogen) 7 by regulating the opening degree of the inert gas regulating valve 4. An oil gas recovery pipeline regulating valve is arranged on the oil gas recovery pipeline 3 and used for controlling the output quantity of oil gas, and the oil gas recovery pipeline regulating valve is close to the output end (an oil gas port 1 of the tank car) of the oil gas storage and transportation tank.
When the tank car loading operation is carried out, the mixed gas of oil gas and oxygen in the tank car oil gas storage and transportation tank needs to pass through the detection of the oxygen content analysis device 5 before entering the oil gas recovery/treatment device 6. The oxygen content analysis equipment 5 is a high-precision oxygen content analyzer and is arranged on a straight pipe of the oil gas recovery pipeline 3, and the length of the straight pipe is more than 1 meter. And simultaneously, instrument cascade regulation of the oxygen content detection device 5 and the inert gas regulating valve 4 is set up, when the oxygen content detection device 5 detects that the oxygen content in the mixed gas is more than 6 percent Vol, the PLC immediately transmits a signal to an actuating mechanism of the inert gas regulating valve 4, the opening of the inert gas regulating valve 4 is immediately increased, nitrogen is filled into the oil gas recovery pipeline 3, the oxygen content in the mixed gas is reduced, and the safety set value of the oxygen content less than 6 percent Vol is continuously controlled. If an emergency occurs and the oxygen content is increased to 8 percent Vol, the oil gas recovery unit immediately triggers interlocking, the oil gas recovery pipeline regulating valve is opened, the oil gas recovery/treatment equipment 6 is shut down, the inert gas regulating valve 4 is opened at the same time, nitrogen is continuously introduced into the oil gas recovery pipeline 3 for replacement until the oxygen content monitoring value in the oil gas recovery pipeline 3 is reduced to be below a safety set value, and the oil gas recovery/treatment equipment 6 can be restarted. Through the implementation and application of the technology, the operation of the whole oil gas recovery unit is safer, and flash explosion accidents caused by the exceeding of oxygen content in the recovered oil gas are avoided.
Claims (6)
1. The system for effectively controlling the oxygen content of the storage and transportation oil gas recovery/treatment equipment is characterized by comprising an oil gas storage and transportation tank, oxygen content detection equipment and oil gas recovery/treatment equipment, wherein the output end of the oil gas storage and transportation tank is connected with an oil gas recovery pipeline, and the output end of the oil gas recovery pipeline is connected with the oil gas recovery/treatment equipment;
the oil gas recovery pipeline is provided with an oxygen content detection device, the output end of the oxygen content detection device is connected with a control loop, the control loop is provided with a PLC (programmable logic controller), the output end of the control loop is connected with an inert gas regulating valve, the input end of the inert gas regulating valve is connected with inert gas, and the output end of the inert gas regulating valve is connected with the oil gas recovery pipeline; the oxygen content detection equipment is used for detecting the oxygen content of the oil gas recovery pipeline, transmitting a detected oxygen content signal to the PLC, transmitting the signal to the inert gas regulating valve by the PLC, and controlling the input quantity of the inert gas by regulating the opening degree of the inert gas regulating valve.
2. The system for efficiently controlling the oxygen content of an oil and gas storage and transportation recovery/treatment facility of claim 1, wherein the oil and gas storage and transportation tank is an oil and gas storage and transportation tank on an oil and gas storage and transportation tanker.
3. The system for efficiently controlling the oxygen content of an warehousing and transportation oil and gas recovery/processing facility of claim 1 wherein the oxygen content detection device is an oxygen content analyzer.
4. The system for efficiently controlling the oxygen content of an oil and gas storage and transportation recovery/processing facility of claim 1, wherein an oil and gas recovery line regulator valve is disposed on the oil and gas recovery line, the oil and gas recovery line regulator valve being proximate to the output end of the oil and gas storage and transportation canister.
5. The system for efficiently controlling the oxygen content of an oil and gas storage and transportation recovery/treatment facility according to claim 1, wherein said oxygen content detection facility is located in a straight pipe line having a length greater than 1 meter.
6. The system for efficiently controlling the oxygen content of an warehousing and transportation oil and gas recovery/processing facility of claim 1 wherein the inert gas is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226746.9U CN217587085U (en) | 2021-12-21 | 2021-12-21 | System for effectively controlling oxygen content of storage and transportation oil gas recovery/treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226746.9U CN217587085U (en) | 2021-12-21 | 2021-12-21 | System for effectively controlling oxygen content of storage and transportation oil gas recovery/treatment equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217587085U true CN217587085U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123226746.9U Active CN217587085U (en) | 2021-12-21 | 2021-12-21 | System for effectively controlling oxygen content of storage and transportation oil gas recovery/treatment equipment |
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| CN (1) | CN217587085U (en) |
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2021
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