CN212196918U - Atmospheric tank car buffer tank exhaust recovery system that unloads - Google Patents
Atmospheric tank car buffer tank exhaust recovery system that unloads Download PDFInfo
- Publication number
- CN212196918U CN212196918U CN202020439265.2U CN202020439265U CN212196918U CN 212196918 U CN212196918 U CN 212196918U CN 202020439265 U CN202020439265 U CN 202020439265U CN 212196918 U CN212196918 U CN 212196918U
- Authority
- CN
- China
- Prior art keywords
- oil
- gas
- oil gas
- buffer tank
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model provides an atmospheric pressure tank car buffer tank vent gas recovery system that unloads, including the buffer tank that unloads that is used for holding light oil, the buffer tank top of unloading is equipped with the gaseous phase and takes over, the gaseous phase is taken over the one end of keeping away from the buffer tank that unloads and is linked together with branch line and oil gas branch pipe intercommunication respectively, the one end that the gaseous phase was taken over was kept away from to the oil gas branch pipe is linked together through oil gas collection pipe and oil gas recovery facility, be equipped with relief valve and maintenance valve on the oil gas branch pipe, the branch line is kept away from the one end and the oil gas branch pipe intercommunication of gaseous phase. The system is simple in design, can timely discharge oil gas in the unloading buffer tank to the oil gas recovery facility, can also prevent overpressure in the tank and timely carry out airtight recovery on the oil gas after pressure release to the oil gas recovery facility, reduces the occurrence of environmental pollution caused by volatilization of the oil gas into the air, reduces the concentration of the oil gas in the operation environment, and lightens harm to workers.
Description
Technical Field
The utility model belongs to petrochemical oil warehousing and transportation light oil field of unloading, in particular to tank car buffer tank exhaust recovery system that unloads of ordinary pressure tank car.
Background
Petrochemicals are mixtures of various hydrocarbon compounds, and some low-boiling components evaporate from the petrochemicals during loading and unloading to form oil and gas. Oil gas pollution generated in the process of loading and unloading petrochemical products is mainly caused by respiratory evaporation, loading and unloading evaporation, wet evaporation, boiling evaporation and static evaporation, the oil gas pollution conditions are different according to different operation conditions, a large amount of high-concentration oil gas is generated in the process of loading and unloading, and the oil gas evaporation is more severe along with the rise of the liquid level of oil products. The oil gas pollution degree is different because of different volatility of different oil products.
Because need discharge to the buffering of unloading when unloading, discharge the oil gas in the buffer tank to the atmosphere in, part medium liquid phase part in the discharge process: light oil products such as naphtha, gasoline and the like can be discharged along the belt, so that the oil products are splashed, and the operation is inconvenient; in addition, oil gas is easy to volatilize, and when a large amount of oil gas is volatilized and meets static electricity and open fire, fire and explosion can occur. In order to reduce the pollution of oil gas to the atmosphere in the process of discharging gas in the unloading buffer tank, the harm to the human body caused by the suction of volatile gas and the occurrence of major accidents, a set of exhaust recovery system of the unloading buffer tank of the normal-pressure tank car is urgently needed to be designed.
Disclosure of Invention
In order to overcome the current not enough, the utility model aims to provide a can collect, prevent that oil gas from discharging to cause dangerous recovery system in the air to the oil gas in the buffer tank of unloading to the ordinary pressure.
The utility model aims at adopting the following technical scheme to realize. According to the exhaust recovery system of the unloading buffer tank of the atmospheric tank car, which is provided by the utility model, the system comprises the unloading buffer tank for containing light oil products, wherein the top of the unloading buffer tank is provided with a gas phase connecting pipe, and one end of the gas phase connecting pipe, which is far away from the unloading buffer tank, is respectively communicated with a branch line and an oil-gas branch pipe; one end of the oil-gas branch pipe, which is far away from the gas-phase connecting pipe, is communicated with an oil-gas recovery facility through an oil-gas collecting pipe, and the oil-gas branch pipe is provided with a safety valve which generates jumping when the pressure in the unloading buffer tank reaches the preset upper pressure limit so as to prevent overpressure in the tank and two maintenance valves which are respectively positioned at the inlet end and the outlet end of the safety valve; one end of the branch line, which is far away from the gas phase connection pipe, is communicated with the oil gas branch pipe, and the branch line is provided with a sight glass for observing the condition inside the branch line and two oil gas switch valves positioned on the upper side and the lower side of the sight glass.
Furthermore, a tank root valve which can cut off the connection between the unloading buffer tank and the oil-gas collecting pipe in time when an emergency occurs is arranged on the gas-phase connecting pipe.
Furthermore, the oil-gas collecting pipe is also provided with an explosion-resistant and explosion-resistant flame arrester which reduces the influence on the unloading buffer tank and the oil-gas recovery facility under the condition of fire.
Borrow by above-mentioned technical scheme, the utility model has the advantages that:
1. the system is simple in design, and oil gas in the unloading buffer tank can be timely discharged to the oil gas recovery facility through the observation sight glass, and meanwhile, the liquid phase of oil products can be prevented from being connected to the oil gas recovery facility in series;
2. the oil gas recovery device can prevent overpressure of the unloading buffer tank and timely carry out closed recovery on the oil gas after pressure release to an oil gas recovery facility, reduce the phenomenon of environmental pollution caused by volatilization of the oil gas into the air, reduce the concentration of the oil gas in the operation environment and reduce harm to workers.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an atmospheric pressure tank truck unloading buffer tank exhaust gas recovery system in the embodiment.
[ reference numerals ]
1-unloading buffer tank, 2-gas phase connecting pipe, 3-tank root valve, 4-maintenance valve, 5-safety valve, 6-oil gas branch pipe, 7-explosion-resistant flame arrester, 8-oil gas switch valve, 9-sight glass, 10-branch pipe, 11-oil gas collecting pipe and 12-oil gas recovery facility.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be made with reference to the accompanying drawings and preferred embodiments of the present invention for the specific embodiments, structures, features and effects of the buffer tank exhaust gas recovery system for unloading of the atmospheric tank car.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, the unloading buffer tank exhaust gas recovery system of the atmospheric tank car comprises two unloading buffer tanks 1 for containing light oil products during unloading, wherein a gas phase connecting pipe 2 is arranged at the top of each unloading buffer tank 1, one end of each gas phase connecting pipe 2, which is far away from the unloading buffer tank 1, is communicated with an oil gas branch pipe 6, and one end of each oil gas branch pipe 6, which is far away from the gas phase connecting pipe 2, is also communicated with an oil gas recovery facility 12 through an oil gas collecting pipe 11; the gas phase connecting pipe 2 is provided with a tank root valve 3, and the communication between the unloading buffer tank 1 and the oil-gas collecting pipe 11 can be cut off in time when an emergency occurs; the oil gas branch pipe 6 is provided with a safety valve 5 and two maintenance valves 4 respectively positioned at the inlet end and the outlet end of the safety valve 5, when the operating pressure in the unloading buffer tank 1 exceeds the upper pressure limit preset by the safety valve 5, the safety valve 5 can jump, in the embodiment, the highest bearing pressure of the unloading buffer tank 1 is 0.1PMa, the constant pressure of the safety valve 5 is 0.08PMa, when the operating pressure in the unloading buffer tank 1 reaches 0.08PMa, the safety valve 5 jumps, gas in the tank is discharged to an oil gas recovery main pipe 11 through a gas phase connecting pipe 2 and the oil gas branch pipe 6, and is then hermetically recovered to an oil gas recovery facility 12, under the normal working condition, the maintenance valves 4 are in a normally open state, when the safety valve 5 jumps or needs to be replaced, the maintenance valves 4 need to be closed firstly, and then the safety valve 5 is operated on.
The oil-gas branch pipe 6 is also provided with a branch pipe 10, and two ends of the branch pipe 10 are respectively communicated with the gas phase connecting pipe 2 and the oil-gas branch pipe 6; a sight glass 9 for observing the condition inside the branch line 10 and two oil gas switch valves 8 positioned on the upper side and the lower side of the sight glass are arranged on the branch line 10; when oil gas in the unloading buffer tank 1 is normally discharged, the oil gas switch valve 8 is opened, the oil gas is discharged to an oil gas collecting pipe 11 through a branch pipe 10, and then the oil gas is hermetically recovered to an oil gas recovery facility 12; observing the sight glass 9 when the oil gas passes through the pipeline 10, closing the oil gas switch valve 8 when liquid in the branch line 10 is found to pass through, opening the oil gas switch valve 8 to perform exhaust again after the liquid in the branch line 10 flows back into the unloading buffer tank 1 through the pipeline, and repeating the operation until the oil gas in the unloading buffer tank 1 is fully recovered to the oil gas recovery facility 12. When the sight glass 9 needs to be overhauled or replaced, the oil gas switch valves 10 on the upper side and the lower side of the sight glass 9 need to be closed at the same time, and then the sight glass needs to be maintained and replaced.
In addition, the oil gas collecting pipe 11 is also provided with a detonation-resistant flame arrester 7, so that the influence on the unloading buffer tank 1 and the oil gas recovery facility 12 under the condition of fire can be reduced.
The working principle of the utility model is as follows:
when oil gas in the unloading buffer tank 1 needs to be discharged, a tank root valve 3 and an oil gas switch valve 8 are opened, the oil gas enters a gas phase connecting pipe 2 and a branch pipe 10, then the oil gas is converged into an oil gas collecting pipe 11 through an oil gas branch pipe 6 and then is hermetically recovered to an oil gas recovery facility 12, a viewing mirror 9 is observed when the oil gas passes through a pipeline 10, the oil gas switch valve 8 is closed when liquid in the branch pipe 10 passes through, and the oil gas switch valve 8 is opened to perform new exhaust work when the liquid in the branch pipe 10 returns to the unloading buffer tank 1 through the pipeline, and the operations are repeated; when the operation pressure in the unloading buffer tank 1 reaches the preset upper limit of the safety valve 5, the safety valve 5 jumps, oil gas in the tank is discharged to an oil gas recovery main pipe 11 through the gas phase connecting pipe 2 and the oil gas branch pipe 6, and then is recovered to an oil gas recovery facility 12 in a closed manner.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can easily modify, change or modify the above embodiments according to the technical spirit of the present invention without departing from the scope of the present invention.
Claims (3)
1. The utility model provides a buffer tank exhaust recovery system that atmospheric pressure tank car unloaded which characterized in that: the unloading device comprises an unloading buffer tank for containing light oil products, wherein a gas-phase connecting pipe is arranged at the top of the unloading buffer tank, and one end of the gas-phase connecting pipe, which is far away from the unloading buffer tank, is respectively communicated with a branch pipe and an oil-gas branch pipe; one end of the oil-gas branch pipe, which is far away from the gas-phase connecting pipe, is communicated with an oil-gas recovery facility through an oil-gas collecting pipe, and the oil-gas branch pipe is provided with a safety valve which generates jumping when the pressure in the unloading buffer tank reaches the preset upper pressure limit so as to prevent overpressure in the tank and two maintenance valves which are respectively positioned at the inlet end and the outlet end of the safety valve; one end of the branch line, which is far away from the gas phase connection pipe, is communicated with the oil gas branch pipe, and the branch line is provided with a sight glass for observing the condition inside the branch line and two oil gas switch valves positioned on the upper side and the lower side of the sight glass.
2. The atmospheric tanker unloading buffer tank exhaust gas recovery system of claim 1, wherein: and a tank root valve which can cut off the connection between the unloading buffer tank and the oil-gas collecting pipe in time when an emergency occurs is arranged on the gas-phase connecting pipe.
3. The atmospheric tanker unloading buffer tank exhaust gas recovery system of claim 1, wherein: the oil-gas collecting pipe is also provided with an explosion-resistant and explosion-resistant flame arrester which reduces the influence on the unloading buffer tank and the oil-gas recovery facility under the condition of fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020439265.2U CN212196918U (en) | 2020-03-30 | 2020-03-30 | Atmospheric tank car buffer tank exhaust recovery system that unloads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020439265.2U CN212196918U (en) | 2020-03-30 | 2020-03-30 | Atmospheric tank car buffer tank exhaust recovery system that unloads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212196918U true CN212196918U (en) | 2020-12-22 |
Family
ID=73824975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020439265.2U Active CN212196918U (en) | 2020-03-30 | 2020-03-30 | Atmospheric tank car buffer tank exhaust recovery system that unloads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212196918U (en) |
-
2020
- 2020-03-30 CN CN202020439265.2U patent/CN212196918U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2311756B1 (en) | Leakage self-help container for stocking hazardous chemical products | |
| CN212196918U (en) | Atmospheric tank car buffer tank exhaust recovery system that unloads | |
| CN110834830A (en) | General aviation fuel storage tank explosion protection and quality guarantee system and method | |
| US2086969A (en) | Vent assemblage | |
| CN204957454U (en) | Storage tank vapor recovery system system | |
| US4193967A (en) | Liquid sealing apparatus for sealing vapors in a tank | |
| US6395068B1 (en) | Bulk tank depressurization filter apparatus and method of using it | |
| CN211203005U (en) | Slope discharge valve | |
| CN205150786U (en) | Chemicals is respiratory device for reservoir | |
| CN209322468U (en) | A kind of gas station oil gas recyclable device | |
| CN211595014U (en) | Oil well oil-pulling tank truck closed loading device and special sealing cover assembly | |
| CN214914196U (en) | Automatic emptying device for oil and gas field production place | |
| CN211997139U (en) | General aviation fuel storage tank blasting protection and quality assurance system | |
| CN110155551A (en) | Storage tank VOCs safe collection method | |
| CN211987887U (en) | Tail gas recovery explosion-proof equipment | |
| CN110173702B (en) | VOCs pre-collection treatment system with water seal and treatment method thereof | |
| CN207275452U (en) | Oil-gas recovery device | |
| CN210440968U (en) | Pipeline structure and liquefied gas storage and transportation equipment with same | |
| CN214326048U (en) | Unloading, cutting and draining collection system of normal-pressure tank car | |
| CN210259661U (en) | Low pressure nitrogen of environment-friendly seals cold-insulated vault jar equipment | |
| EP2448860B1 (en) | Fuel storage facility and method for storing fuel | |
| CN219640265U (en) | Oil gas treatment system adopting heating furnace incineration method | |
| CN220110727U (en) | Styrene tail gas recovery and treatment system | |
| CN219584978U (en) | Naphtha storage tank safety control system | |
| CN208980323U (en) | A kind of device for recovering oil and gas reducing environmental pollution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |