Yellow phosphorus tail gas purification and CO purification technology to eliminate pollution
Nickel-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent corrosion resistance, high temperature strength, and good weldability. These alloys are typically composed of nickel as the base metal, with various alloying elements added to enhance specific properties. Inconel Powder,Nickel Powder,Pta Welding Ni Alloy Powder,Laser Cladding Ni Base Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtclasercladding.com
Phosphorus is an important chemical raw material. The tail gas produced in the production process contains 85% to 90% of carbon monoxide as a basic carbonyl synthesis material, and also contains elements or compounds such as sulfur, phosphorus, arsenic, and fluorine. At present, most of the yellow phosphorus producers in China deal with yellow phosphorus tailings directly through the torch burning and venting, so that the surrounding atmospheric environment and water resources are contaminated, while carbon monoxide resources are wasted. According to the calculation of annual output of 450,000 tons of yellow phosphorus in China, a total of 1.1 billion standard cubic meters of yellow phosphorus tail gas will be produced each year. With 1.5 g of phosphorus and phosphides per standard cubic meter and 20 g of sulfides, 1687.5 tons of phosphide and 22,000 tons of sulfide are discharged into the atmosphere each year, causing serious environmental pollution and at the same time causing 990 million standard cubic meters. The above carbon monoxide resources are wasted.
Industry experts pointed out that the yellow phosphorus tail gas purification and carbon monoxide purification technology developed by the Southwest Institute will bring new technical support for China's environmental protection industry and meet the technical requirements for the development of circular economy.
Some commonly used nickel-based alloy powders for PTAW include:
1. Inconel 625: This alloy powder is widely used for PTAW due to its high strength, excellent resistance to corrosion, and oxidation at elevated temperatures. It is commonly used in applications involving seawater, chemical processing, and aerospace industries.
2. Hastelloy X: This alloy powder is known for its high-temperature strength and oxidation resistance. It is commonly used in applications involving gas turbine engines, industrial furnace components, and chemical processing.
3. Monel 400: This alloy powder is known for its excellent resistance to corrosion, particularly in marine environments. It is commonly used in applications involving seawater, chemical processing, and oil refining.
4. Inconel 718: This alloy powder is known for its high strength, excellent resistance to corrosion, and good weldability. It is commonly used in applications involving aerospace, oil and gas, and nuclear industries.
5. Inconel 601: This alloy powder is known for its excellent resistance to high-temperature oxidation and corrosion. It is commonly used in applications involving heat treatment equipment, chemical processing, and power generation.
These nickel-based alloy powders can be used in PTAW processes to create high-quality welds with excellent mechanical properties and resistance to corrosion and high temperatures.