It is understood that this device is the first waste lye treatment device in China that uses fiber membrane separation technology and oxidation regeneration technology. After two years of hard work, Dalian Petrochemical Engineering Co., Ltd. has invested more than 50 million yuan to build it, with an annual processing capacity of 10,000 yuan. cubic meter. Scientific treatment of high concentrations of sulfides and refractory organics in spent lye can be described as a "good trick." According to reports, the device is mainly composed of a phenol-containing lye treatment system and a sulfur-containing lye treatment system. The phenol content of the treated phenol lye will be reduced by more than 95%, and the sulfur content of the treated sulfur-containing phenol lye will be lower than 70 mg/L by sulphur, which ensures the controllable treatment of the spent alkali. The regenerated alkali formed after the treatment can be used for sewage treatment and flue gas desulfurization and realize recycling; the recovered crude phenol is used as a high-grade paint solvent, etc., with high added value, and is calculated according to 10,000 tons of waste lye treated in one year. Phenol extraction up to 300 tons.
According to relevant person in charge of Dalian Petrochemical Company, in the past, the company had to pay a certain fee to transport waste caustic liquor to the factory for processing, and also had to spend a fortune to purchase new alkali liquor, and this set of equipment enabled the spent caustic solution to be recycled in the plant. Use, saving the purchase of new alkali and transportation, processing costs, and more importantly, this device also enables Dalian Petrochemical Company to achieve a complete step to achieve "zero emissions" through energy-saving emission reduction. According to reports, this environmental protection device that meets the requirements of the circular economy will also “go out†Dalian Petrochemical Company to provide services for other petrochemical enterprises.
Tungsten carbide grits are small particles or granules of tungsten carbide, a compound made up of tungsten and carbon atoms. They are extremely hard and have a high resistance to wear and abrasion, making them useful in a variety of industrial applications.
Tungsten carbide grits are often used as abrasives in cutting tools, grinding wheels, and sandpaper. They can also be used as an additive in metal alloys to improve their hardness and wear resistance. Additionally, tungsten carbide grits are used in the mining and drilling industry for rock drilling and excavation.
These grits are available in different sizes and shapes, such as spherical or irregular particles, depending on the specific application. They are typically produced through a process called sintering, where Tungsten Carbide Powder is heated and compressed to form a solid material.
Overall, tungsten carbide grits are highly valued for their hardness, durability, and resistance to wear, making them essential in various industries where high-performance materials are required.
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