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Compression operating procedures: 1. An alarm device for low inlet pressure of this system, as well as an interlock device to shut down the Roots pump and the compressor, should be installed. 2. Check valves should be installed on the pipelines leading to the conversion, desulfurization, copper washing, and synthesis units of the compressor. 3. The return air valve on the compressor’s main oil sump should remain open at all times; pressure buildup is strictly prohibited. Oil and water should be discharged slowly to prevent high pressure from reaching low pressure and to avoid static electricity-induced fires. 4. Ensure that all control devices for pressure, temperature, current, voltage, alarms, etc., are sensitive, accurate, and reliable. 5. Strictly follow the operating procedures for starting up and shutting down the equipment; the turntable must be used, and it is prohibited to use cranes for turning the equipment. 6. Starting under load is prohibited. 7. The water pressure and oil pressure should remain normal, and the relevant pipelines must be unobstructed. 8. When the water jacket of the cylinder runs out of water, it is prohibited to add cooling water immediately; the machine should be stopped and allowed to cool naturally before any action is taken. 9. When draining oil and water, it is strictly prohibited to do so too forcefully or too quickly to avoid excessive air entrainment. It is also forbidden to discharge oil from multiple compressors at the same time, to prevent pressure fluctuations in the inlet main pipe as well as pressure buildup in the oil collection tank, which could lead to accidents. 10. During the start-up and shutdown of the compressor, pressure increase or decrease must occur slowly, with stable pressures at each stage, in order to prevent gas backflow and avoid accidents caused by high pressure leaking into the low-pressure area. 11. The air pressure testing period should not be too long, and the compression ratio as well as the outlet temperatures at each stage must be closely monitored. 12. A strict shift-handover system and the rules of “three preparations before starting work, eight prohibitions during shifts, and five conditions under which one must not leave work”.