China’s first “carbon 5 full separation” project launched in Lanzhou
Thread Content
It is reported that China’s first “carbon 5 full separation” project, with an initial investment of 700 million yuan, was officially launched in Lanzhou recently. Currently, the site selection for this project is being accelerated. It is stated that the C5 fraction is a by-product of steam cracking units used to produce ethylene; it typically accounts for 10%-20% of the ethylene produced, and contains three valuable dienes (cyclopentadiene CPD, isoprene IP, and mesitylene PIP), which make up 40%-55% of the C5 fraction. ) and some monoenes as well as a small amount of alkanes; these dienes and monoenes can be used, through separation, to synthesize many high-value products. At present, in the United States and Japan, which possess the full separation technology for carbon 5, the utilization rate of this substance reaches 80%, while in China it is only around 20%. Most of the carbon 5 has to be used as fuel and burned, resulting in significant waste of resources ； At the same time, there is currently no complete carbon 5 separation production line in China, which forces the country to import large amounts of high-quality dienes each year. Moreover, the development of downstream products based on carbon 5 now requires a higher purity level for the carbon 5 separates; therefore, the construction of advanced separation facilities will be the direction for the future development of carbon 5. It is understood that domestically, 2.1 million tons of pyrolysis carbon 5 are produced as a by-product of ethylene production each year, while Lanzhou currently has 110,000 tons of such carbon 5 resources. This project is based on the Fraction 5 from the pyrolysis carbon produced as a by-product of Lanzhou’s 700,000 tons per year ethylene plant, with carbon 5 from other ethylene plants in PetroChina’s western region serving as a supplement. In the first phase, a 50,000-ton/year C5 separation unit and a 10,000-ton/year C5 hydrogenated petroleum resin unit were constructed, resulting in the establishment of an overall C5 separation facility with a capacity of 118,000 tons per year.
This is also good; utilizing the C5 compounds in pyrolyzed gasoline can increase economic benefits. The hydrogenation process for the core fraction involves using a C5 removal tower to extract valuable compounds such as cyclopentadiene CPD, isopentadiene IP, and mesopentadiene PIP from pyrolysis gasoline, with the various components being separated through extractive distillation.
The main goal is to enhance economic benefits by making comprehensive use of C5 compounds in pyrolyzed gasoline.
It increases economic benefits while enabling effective use of resources
This post was last edited by yanran88 on 2010-3-4 at 18:54. Induced condenser isopentane for polyethylene production units – The head office stays at the forefront of world technology and, through cooperation with various research institutions and universities, has successfully resolved the issue of controlling moisture levels in isopentane, meeting the strict technical requirements of all polyethylene production units!