AA-G8 activated alumina for polyethylene purification is as a filtration media in polyethylene production.In this process, the slurry co-catalyst is filtered out of the polyethylene and trapped in the pores of the alumina bead.
Polyethylene (PE) is the most common plastic precursor and is used in a range of applications. Polyethylene is made from the building block of petroleum-based products, ethylene. Ethylene is produced from cracking ethane or naphtha. Often, an ethylene cracker is built on or near a refinery or PE derivative plants. In general terms, ethylene, a co-monomer, and solvent are purified and reacted with a catalyst in a continuous stirred tank reactor (CSTR). The slurry mixture exiting the reactor is then filtered to remove catalyst particles. Next, solvent is separated from the product with solvent recovery and recycle following. Purified polyethylene is extruded and then pelletized to a final product.Product created in a CSTR must be purified at the end of the process, removing the co-catalyst. The catalyst removal step is done through adsorption beds of AA-G8 activated alumina balls. This type of activated alumina is defined as HDPE purification.
Various size available for the international condition.
7* 14 mesh(1.2-2.8mm), 6*10mesh(1.5-3.2mm),5*8(2.5-4.0mm)
Characteristics of Activated alumina for polyethylene purification:
1.High bulk density
3.High mechanical strength and wear resistance
4.High pore volume and high adsorption