Wharf VOCs oil gas recovery ship-shore docking device

Abstract

The utility model discloses a dock VOCs (volatile organic compounds) oil gas recovery ship-shore docking device which comprises a ship oil gas pipeline, a first oxygen content analyzer, an oil gas stop valve, a gas-liquid separator, a flame arrester, a flow meter, a second oxygen content analyzer and a VOCs treatment device which are sequentially connected. The device can be used for connection of ships and shores, and is applied to collection of oil gas or VOCs from cargo holds to wharf oil gas recovery.

Description

Technical Field

[0001] The utility model relates to the field of VOCs oil and gas recovery, in particular to a dock VOCs oil and gas recovery ship-shore docking device. Background Art

[0002] Chemical terminals ship a wide variety of products, generally including gasoline, diesel and other oil products and benzene, paraxylene and other chemicals. During the loading process, these oil products and chemicals are easy to volatilize and produce a large amount of oil and gas. Oil and gas are atmospheric pollutants, which bring environmental risks. At the same time, oil and gas contain carcinogens such as benzene, which are harmful to human health. In recent years, the country has attached great importance to environmental protection and safety supervision, and has successively issued a number of standards and laws for oil and gas recovery at terminals. Therefore, petrochemical terminals are in urgent need of implementing oil and gas recovery facilities to meet environmental protection and safety management requirements.

[0003] The oil and gas recovery facilities at the wharf are the overall equipment and systems for oil and gas recovery and treatment at the wharf, mainly including oil and gas collection devices, ship-shore safety devices, oil and gas transportation devices, oil and gas recovery devices, automatic control systems and other supporting systems. Among them, the ship-shore docking device is an important part connecting the ship and the onshore oil and gas processing device. At present, there is no suitable ship-shore docking device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dock VOCs oil and gas recovery ship-shore docking device, which can be used to connect a ship to the shore and is applied to collect oil and gas or VOCs from a cargo hold and recover oil and gas at the dock.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dock VOCs oil and gas recovery ship-shore docking device comprises a ship oil and gas pipeline, a first oxygen content analyzer, an oil and gas cut-off valve, a gas-liquid separator, a flame arrester, a flow meter, a second oxygen content analyzer and a VOCs treatment device which are connected in sequence.

[0007] As a further solution of the utility model, a pressure gauge, a first pressure transmitter, a nitrogen access device, and a venting safety valve are sequentially connected between the first oxygen content analyzer and the oil and gas shut-off valve.

[0008] As a further solution of the utility model, a second pressure transmitter is provided between the flame arrester and the flow meter.

[0009] As a further solution of the utility model, the nitrogen access device is sequentially provided with a nitrogen pipeline, a pressure regulating device and an electric shut-off valve.

[0010] As a further solution of the utility model, it also includes a PLC controller, which is respectively connected to the first oxygen content analyzer, the oil and gas shut-off valve, the flow meter, the second oxygen content analyzer, the pressure gauge, the first pressure transmitter, the second pressure transmitter, the pressure regulating device and the electric shut-off valve.

[0011] As a further solution of the utility model, an electric vent valve is arranged on one side of the vent safety valve, and a flame-blocking vent cap is arranged on the upper end of the electric vent valve.

[0012] The utility model has the following beneficial effects:

[0013] The dock VOCs oil and gas recovery ship-shore docking device of the utility model can be used for connecting a ship with a shore, and is applied to collecting oil and gas or VOCs from a cargo hold to recover oil and gas at the dock.

[0014] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a ship-shore docking device for VOCs oil and gas recovery at a wharf mentioned in the utility model. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and related knowledge, and described clearly and completely. Obviously, the described application is only a part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Reference Figure 1 As shown, the utility model provides a dock VOCs oil and gas recovery ship-shore docking device, comprising a ship oil and gas pipeline 1, a first oxygen content analyzer 2, an oil and gas cut-off valve 3, a gas-liquid separator 4, a flame arrester 5, a flow meter 6, a second oxygen content analyzer 7 and a VOCs treatment device 8 (in Figure 1 The figure shows the air inlet end of VOCs treatment). The overall skid-mounted design makes on-site installation easy.

[0018] In the utility model, oxygen content analyzers are designed at both upstream and downstream to detect the oxygen content. The oil and gas shut-off valve 3 is used to cut off the oil and gas when necessary. The gas-liquid separator 4 is used to separate the gas and liquid to prevent the condensed liquid from entering the VOCs treatment device. The flame arrester 5 prevents the fire from spreading to the transport ship when a fire occurs at the rear end. The flow meter 6 can monitor the processing capacity of the device and monitor the emission of VOCs.

[0019] exist Figure 1In the embodiment, a pressure gauge 9, a first pressure transmitter 10, a nitrogen access device, and a venting safety valve 11 are connected in sequence between the first oxygen content analyzer 2 and the oil and gas shut-off valve 3. It is further preferred that a second pressure transmitter 12 is arranged between the flame arrester 5 and the flow meter 6. By designing pressure sensors at both upstream and downstream, as well as a pressure digital display device and a pressure alarm, a prompt is given when the pressure exceeds the set value.

[0020] Reference Figure 1 As shown, the nitrogen access device is provided with a nitrogen pipeline 13, a pressure regulating device 14 and an electric shut-off valve 15 in sequence. By setting up a nitrogen inerting system and designing an automatic shut-off valve, nitrogen purging can be achieved, and the nitrogen purging function is performed when the device is started or stopped.

[0021] Furthermore, it also includes a PLC controller 16, which is respectively connected to the first oxygen content analyzer, the oil and gas shut-off valve, the flow meter, the second oxygen content analyzer, the pressure gauge, the first pressure transmitter, the second pressure transmitter, the pressure regulating device and the electric shut-off valve, so that the operating programs of various equipment, instruments, control valves, etc. can be integrated into the PLC, and one-button start and automatic control can be achieved, with a high degree of automation.

[0022] In the utility model, an electric vent valve 17 is provided on one side of the vent safety valve 11, and a flame-blocking vent cap 18 is provided on the upper end of the electric vent valve 17, which can further ensure the safety of the device.

[0023] Reference Figure 1 As shown, the utility model can monitor the pressure, differential pressure, temperature, flow rate, oxygen content, VOCs and other parameters of oil and gas online during the dock VOCs oil and gas recovery ship-shore docking process, play the functions of automatic self-checking, automatic alarm and automatic protection, and can make judgments in time in response to abnormal situations such as overpressure, vacuum, combustion and explosion limits, among which, the processing capacity of the device can be monitored through the flow meter, and the emission of VOCs can be monitored; by designing pressure sensors, pressure digital display devices and pressure alarms at both the upstream and downstream, when the pressure exceeds the set value, an automatic alarm prompt is given; The flame arrester is designed to prevent the fire at the rear end from spreading to the transport ship; the gas-liquid separator is designed to prevent the condensed liquid from entering the VOCs treatment device; the oxygen content analyzer, digital display and alarm are designed both upstream and downstream, and automatic alarm prompts are given when the set value is exceeded; the nitrogen automatic purge system is designed and automatically controlled by the program, and the nitrogen purge function is automatically performed when the device is started or stopped, and the operating programs of various equipment, instruments, control valves, etc. are integrated into the PLC, which can achieve one-button start and automatic control, with a high degree of automation.

[0024] The technical principle of the utility model is described above in combination with the specific embodiments, which are only the preferred implementation methods of the utility model. The protection scope of the utility model is not limited to the above embodiments, and all technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. Those skilled in the art can think of other specific implementation methods of the utility model without creative labor, and these methods will fall within the protection scope of the utility model.

Claims

1. A dock VOCs oil and gas recovery ship-shore docking device, characterized in that: It includes a ship oil and gas pipeline, a first oxygen content analyzer, an oil and gas cut-off valve, a gas-liquid separator, a flame arrester, a flow meter, a second oxygen content analyzer and a VOCs treatment device which are connected in sequence.

2. A dock VOCs oil and gas recovery ship-shore docking device as claimed in claim 1, characterized in that: A pressure gauge, a first pressure transmitter, a nitrogen access device, and a venting safety valve are sequentially connected between the first oxygen content analyzer and the oil and gas cut-off valve.

3. A dock VOCs oil and gas recovery ship-shore docking device as claimed in claim 2, characterized in that: A second pressure transmitter is arranged between the flame arrester and the flow meter.

4. A dock VOCs oil and gas recovery ship-shore docking device as claimed in claim 3, characterized in that: The nitrogen access device is sequentially provided with a nitrogen pipeline, a pressure regulating device and an electric shut-off valve.

5. A dock VOCs oil and gas recovery ship-shore docking device as claimed in claim 4, characterized in that: It also includes a PLC controller, which is respectively connected to the first oxygen content analyzer, the oil and gas shut-off valve, the flow meter, the second oxygen content analyzer, the pressure gauge, the first pressure transmitter, the second pressure transmitter, the pressure regulating device and the electric shut-off valve.

6. A dock VOCs oil and gas recovery ship-shore docking device as claimed in claim 5, characterized in that: An electric vent valve is arranged on one side of the vent safety valve, and a fire-blocking vent cap is arranged on the upper end of the electric vent valve.

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