After the three oil and gas recovery devices at the gas station were put into operation, the real test began. Membrane separation components, compression condensing units, explosion-proof electrical control boxes, these core components each have their own aging rhythm, and if maintenance cannot keep up, the recovery rate will quietly decline and the emission concentration will slowly increase. This article compiles a set of executable daily maintenance lists by equipment location for reference by fuel station management and operation personnel.
The membrane module is the heart of the membrane separation process, and its separation performance will slowly decline with accumulated operating time. It is recommended to record the pressure difference between the membrane before and after each inspection. An increase in pressure difference indicates the accumulation of pollutants on the membrane surface or the presence of liquid in the inlet air; The front end of the intake must ensure the normal operation of the gas-liquid separator, and the entry of liquid oil into the membrane component is the number one killer of membrane life. According to the actual working conditions, membrane components usually need to be replaced regularly based on the number of operating hours. The specific cycle is subject to the on-site pressure difference and emission concentration data. Do not wait until the emissions exceed the standard before replacing.
The condensation section relies on the refrigeration cycle of the compressor to lower the temperature of the oil and gas. There are three things to check daily: first, whether the refrigerant pressure is within the normal range. If the pressure is abnormally low, it is likely a leak; The second issue is whether there is dust or scaling on the fins and tube bundles of the heat exchanger. A decrease in heat transfer efficiency will directly raise the outlet temperature; The third is the lubricating oil level and quality of the compressor. Lack of oil or oil emulsification can shorten the service life of the compressor. It is recommended to record the outlet temperature of the condensation section once a day. If the temperature continues to rise, it is a signal of heat exchange or cooling problems.
The device is used in explosive hazardous areas such as gas stations, and explosion-proof junction boxes, explosion-proof motors, and grounding systems are the safety bottom line. Regularly check whether the sealing surface of the explosion-proof junction box is damaged, whether the fasteners are loose, and whether the cable entry device is compacted; Measure the grounding resistance of the entire machine to ensure it is within the qualified range. Safety accessories such as breathing valves, flame arresters, and pressure relief devices should be regularly calibrated according to the manufacturer's requirements, and any abnormal operating pressure should be promptly addressed. Any electrical maintenance must first be powered off and operated by personnel with explosion-proof electrical operation qualifications.
The structure of the pry mounted oil and gas recovery device is compact, and it is recommended to arrange daily inspections at three levels: daily, weekly, and monthly. Check the operating parameters (processing capacity, temperature, pressure difference, emission concentration) and whether there are any abnormal noises or leaks on a daily basis; Check the gas-liquid separator discharge, filter pressure difference, and grounding connection every week; Conduct a monthly in-depth inspection of the condensing unit and membrane components, and synchronously verify the online monitoring instruments. Every maintenance is recorded and timely maintenance is arranged when there is a trend change in parameters.
The core logic of maintenance is to monitor data, grasp trends, and eliminate problems before exceeding emissions standards. The stable operation of the device does not rely on luck, but on periodic inspections and timely maintenance.
Mr. Li 13526990215
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