PS foam scrap will be used with the new law

Time:2011-08-03Hits:692

As people's living standards improve, the resulting waste polystyrene (PS) foam increased, making the "white pollution" is getting worse. The traditional method of dealing with waste polystyrene foam are burying, burning, direct use of law, cracking, melting regeneration, solvent recycling law, but most of these methods there are pollution, high energy consumption, transport costs are high , recovered from polystyrene poor performance shortcomings. Polystyrene foam has not been integrated waste recycling, is a tremendous waste of resources, but also caused a significant pollution to the environment.

Central South University, developed a comprehensive utilization of waste polystyrene technology to effectively overcome the shortcomings of the traditional approach. The technology uses orange oil dissolved in the waste polystyrene foam, and then by adding precipitation agents (alcohols, ethers and other organic reagents) to make polystyrene precipitation, filtration polystyrene can be recycled, and finally by adding additives separation of the solvent and precipitant, solvent recovery, additives and precipitant can be separated by distillation. This process is simple, polystyrene, and solvent recovery, high efficiency, performance and standards of performance from polystyrene or less, can be directly used to prepare a new polystyrene foam; the reagents used safe non-toxic, does not produce secondary pollution, and can be recycled, solvent recovery rate of 95%. Simply heat the entire process, which saves energy and reduces production costs. The technology has applications for two national invention patents, utility models, a.