China Mixed Gas Compressor Factory: Reliable Suppliers for Syngas, Refinery Gas & Biogas Solutions

The metal diaphragm completely isolates the process gas from the lubricating oil, achieving 100% oil-free operation and zero external leakage. This is crucial for preventing the accumulation of leaked flammable or explosive gas mixtures and for maintaining the specified component ratio of the mixture without oil contamination or air dilution, fundamentally eliminating safety risks caused by leakage.

The wetted parts of the diaphragm head (such as the diaphragm and cavity) can be custom-selected for materials based on the most corrosive or reactive components in the gas mixture, for example using 316L stainless steel, Hastelloy, etc. This flexibility ensures long-term compatibility between the compressor and complex gas components, preventing premature diaphragm failure or gas contamination due to material corrosion.

The explosion-proof rating of the electrical system must be determined based on the component with the highest gas group classification and the lowest auto-ignition temperature in the mixture. All motors, instruments, and junction boxes must meet the corresponding explosion-proof certifications. Additionally, the control cabinet must integrate a combustible gas concentration detector to monitor the environment around the compressor, interlocking with emergency ventilation when the concentration exceeds the limit.

The discharge temperature is critical for preventing gas thermal decomposition or diaphragm overheating. The design must employ efficient multi-stage compression and inter-stage cooling systems to keep the final discharge temperature within a safe range. A diaphragm rupture monitoring system is standard; failure of any diaphragm layer will immediately trigger an alarm and shutdown, preventing gas from entering the oil side or oil from entering the process system.

In addition to conventional oil pressure, water pressure, and pressure interlocks, special attention must be paid to the stability of the inlet gas composition. If the process permits, an online gas analyzer can be recommended to monitor changes in the concentration of key components. The system must be equipped with inert gas (e.g., nitrogen) purge connections for pre-startup purging and post-shutdown pressure holding/sealing, preventing air ingress that could form explosive mixtures or cause undesired chemical reactions.