Installation specifications and commissioning process for VOCs treatment equipment at gas stations: from on-site survey to oil operation

The installation process determines at least half of whether a set of VOCs treatment equipment can operate stably for a long time. Improper location selection, incorrect pipeline slope, and inadequate grounding will gradually expose problems after being put into use. This article summarizes the key points of installation specifications for VOCs treatment equipment (represented by tertiary oil and gas recovery devices) at gas stations in the order of on-site survey, foundation construction, pipeline docking, electrical wiring, and step-by-step debugging.

On site survey: first look at the site and then determine the plan

The first step in installation is not construction, but on-site survey. Confirm that the equipment installation area has a flat ground, good ventilation, and is away from densely populated passages; The venue should be higher than the surrounding ground, and drainage measures should be taken around to prevent water from flowing back; Maintain a sufficient safe distance between the equipment and the fence. Simultaneously confirm the direction of the oil and gas pipeline: the inlet can be easily connected to the tank breathing valve pipeline, and the return oil pipeline has continuous downhill conditions. Only by thoroughly understanding the site conditions can we have a basis for subsequent installation.

Foundation and fixation: Even when installing equipment, it is important to sit firmly

The tertiary oil and gas recovery device is mostly a pry mounted integrated structure, with installation holes left on the base. During installation, level the concrete foundation or steel base according to the instructions, and secure the pry frame with bolts to prevent displacement caused by mechanical vibration. Reserve maintenance and inspection space around the equipment. Grounding treatment is the key: connect the secondary grounding circuit, ensure that the grounding resistance meets the specification requirements, and ensure effective static electricity dissipation. This is the foundation for reliable operation of equipment in flammable and explosive places.

Pipeline docking: slope, valve and sealing

There are three things to pay attention to when connecting oil and gas pipelines. One is the slope direction of the intake and return oil pipelines: the return oil pipeline should maintain a continuous downward slope towards the storage tank to avoid liquid accumulation. The second is valve configuration: the intake pipeline is equipped with shut-off valves and flame arresters as needed, and the return pipeline is equipped with shut-off valves and check valves to prevent backflow. The third is airtightness: all relevant gas and liquid pipelines can only be put into use after passing the airtightness test. Flanges, threads, and sealing surfaces should be inspected one by one to prevent leakage points. The explosion-proof junction box and cable entry of the equipment must be properly sealed.

Electrical wiring: sequence review and phase sequence protection

Electrical wiring should be checked for phase sequence according to the instructions. Confirm and tighten the phase sequence, neutral wire, and ground wire of the internal control cabinet and explosion-proof junction box of the equipment, and seal the cable entrance. After powering on, check the status of the phase sequence protector first. If the phase sequence is incorrect, the equipment will alarm and refuse to operate. After the wiring is completed and the explosion-proof surface is restored tightly, debugging can be carried out. Any live work should be carried out in a power-off state, and the regulations for working in flammable areas should be strictly followed.

Step by step debugging: First empty load, then with pressure, and finally with oil

Debugging follows three steps. Step 1: No load test: After powering on, confirm that all components are running in the correct direction, without abnormal noise or vibration. Step 2 Pipeline Leak Detection: Conduct an air tightness check on the inlet and outlet pipelines to confirm that there are no leaks. Step 3 Oil test run: Simulate or actual oil unloading conditions, observe whether the compressor starts, condenses and recovers, returns oil flow, and exhaust emissions are normal, and check whether the processing capacity, pressure, temperature, and other parameters are within the design range. After everything is normal, the equipment will enter automatic operation and be managed by the station according to the operation manual.

Installation is the starting point of a device's lifetime. Surveying, fixing, pipeline, electrical, and debugging are interrelated, and each step is done according to the specifications, so that VOCs treatment equipment can run steadily and be used for a long time.