Summary: Argon is heavier than nitrogen because argon has a larger molecular weight, and argon is more inert than nitrogen, so argon-filled welding has a wider application range than nitrogen-filled shielded welding. Nitrogen: Elemental nitrogen is a colorless and odorless gas under normal conditions, and the gas density under standard conditions is 1.25g·dm-3. Nitrogen turns into a colorless liquid when cooled to -195.8°C under standard atmospheric pressure, , when cooled to -209.86°C, it turns into a snow-like solid. The solubility of nitrogen in water is very small. At normal temperature and pressure, only about 0.02 volume of nitrogen is dissolved in 1 volume of water. It is a gas that is difficult to

Cylinder inspection is a crucial step in ensuring the safe use of gas cylinders. With the increasing demand for various gases in both industrial and domestic settings, the safety of gas cylinders has become particularly important. This article will provide a detailed explanation from four perspectives: the importance of cylinder inspection, the contents of the inspection, inspection methods, and common issues. Ⅰ. The Importance of Cylinder Inspection Cylinders are widely used in industrial, medical, and domestic fields, carrying various gases such as liquefied petroleum gas, oxygen, and nitrogen. Due to the special properties of these gases, any leakage or explosion of the cylinder can lead to catastrophic consequences. Therefore, regular inspection of cylinders to

In the realm of renewable energy, the quest for efficient, sustainable, and scalable storage solutions is more crucial than ever. One of the most promising technologies gaining traction is Compressed Air Energy Storage (CAES), which, when integrated with green hydrogen production, has the potential to revolutionize power generation and storage systems. 1.UnderstandingCompressed Air Energy Storage (CAES) The working principle of Compressed Air Energy Storage (CAES) is simple yet effective. The basic principle of this technology involves usingair compressorsto compress air when the demand for electricity is low, and store it in underground caverns or other types of containers. When the demand for electricity increases, the stored compressed air is released. It

On March 21, 2024, Jin Hong Gas signed a long-term supply contract for industrial gases with Yingkou Jianfa Shenghai Nonferrous Chemical Co., Ltd. Through the construction of a new air separation unit with a capacity of 66,000 Nm³/h, the company will supply industrial gases—oxygen and nitrogen—via pipeline to the customer. The total value of the contract is approximately 2.4 billion yuan (excluding tax). Industrial gases are fundamental raw materials for modern industries, extensively used in fields such as steel/non-ferrous metallurgy, petrochemicals, welding and metal processing, aerospace, and automotive and transportation equipment. For users who consume large quantities of industrial gases, Jin Hong Gas leverages its technical features and support service capabilities, relying

1. Application of Supercritical CO2 in Environmental Engineering 1.1 Regeneration of Activated Carbon Adsorbents Activated carbon possesses strong adsorption capabilities and can be reused, making it widely applied in various fields such as medicine, food, environment, and new materials. It plays a significant role in environmental engineering by adsorbing the majority of toxic and environmentally unfriendly gases. However, the use of activated carbon also poses challenges. After reaching saturation with adsorbed impurities, activated carbon needs regeneration. Currently, there are several difficulties in the regeneration process. For instance, incomplete removal of impurities during regeneration can affect the adsorption capacity of activated carbon. Moreover, regeneration often requires large amounts of high-temperature inert gas

Industrial gases play a crucial role in production and manufacturing processes. For instance, nitrogen is used for inert atmosphere protection, hydrogen for hydrogenation reactions, and oxygen for oxidation processes. However, when using these industrial gases, you may encounter some common issues and faults. This article will address some of the common industrial gas problems and provide troubleshooting advice to help readers better handle these issues. It is essential to note that different gases may have different characteristics, and specific solutions should be provided by professionals. This article only offers general information on potential issues with bottled gases. 1.Gas Leak: Reasons and Solutions Possible reasons: Faulty Valve Seal: A damaged or aged valve seal can