Weihua sealed dry gas supply device granted a patent

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The dry gas supply device for sealing in Weihua has been patented. Author/Source: Date: 2016-03-10. Clicks: 31. A few days ago, another utility model patent of Weihua Company was authorized by the **Intellectual Property Office, and the patent certificate was received. The name of the patent is “A gas supply device for primary sealing of dry gas in ammonia compressors”, with the patent number ZL 2015 2 0636596.4. When the ammonia compressor is operating normally, the primary seal gas for the dry gas seal is mainly supplied by the process gas at the compressor outlet; during shutdown, medium-pressure nitrogen is used as the primary seal gas. During the normal start-up and shutdown of the ammonia compressor and the switching of the primary seal gas, a large amount of nitrogen enters the compressor system, which causes an increase in system pressure and temperature during startup, thereby increasing the difficulty of starting the compressor ； It also leads to an increase in turbine load and higher consumption of steam and gaseous ammonia; in order to displace nitrogen, large amounts of gaseous ammonia are released into flares, resulting in a waste of resources. This utility model is a gas supply device used for the primary seal of ammonia compressors. It introduces liquid ammonia from a liquid ammonia storage tank, where it is vaporized by steam in a plate heat exchanger; the resulting gas is then supplied to the seal gas system as the primary seal gas for the ammonia compressor. This approach effectively reduces the amount of nitrogen that enters the system, thereby minimizing waste due to the release of ammonia caused by nitrogen displacement and reducing environmental pollution. It also alleviates various problems such as high temperatures and pressures during the startup of the ammonia compressor. Furthermore, it reduces the impact of unstable pressure of the primary seal gas resulting from seal gas switching on the service life of the seals, thereby improving the economic efficiency and environmental friendliness of the production facility. This patented technology provides solutions to the numerous problems existing in the startup process of ammonia compressors.