polymerization plant
1.The direct application of recovered EG generated in polymerization plant stop running to esterification start-up was introduced.
2.e. ,drying,stripping and polymerization,in the PVC Branch Plant of Guizhou Province Zunyi Alkali Factory were analyzed. It was found that 32.318 tons of steam of 0.6 MPa were actually consumed for the production of l ton of PVC based on the PVC production capacity of 130 kt/a.
3.Whereas the operating temperature of thechlorination and polymerization reactor is at 340℃~400℃, pure nickel has a tendency of graphitization at this temperature as per ASME code. To prevent graphitization from occurring, low carbon nickel with 0.02% carbon content, i. e. N201 in ASME code, should be selected as the material for the tubes in chlorination and polymerization reactor in commercial production plant.
4.A new technology for reducing reaction time of EBR polymerization was adopted in 50 kt/a ABS plant.
5.Nilit, founded in 1969, operates a fully integrated chemical plant including monomer production, polymerization, post-polymerization processing and compounding of nylon6.6.
6.The main influence factors on the polymerization of emulsion butadiene rubber(EBR)and the quality of its product were analyzed based on the results of commissioning test run in a 50 kt/a EBR plant of Synthetic Rubber Factory of Lanzhou Petrochemical Company.
7.The main work was listed ans follows:The plant of propylene polymerization is made up of four reactors in series (D201, D202, D203, D204). The first two reactors (D201, D202) were liquid-phase synthesis of polypropylene using stirred reactors, and the later two were gas-phase using fluidized bed reactors.
8.Based one the analysis of the risk factors in the production system of polyethylene workshop in a chemical plant , the fire explosion risk in such main dangerous units as polymerization , raw material refining and zone of canned propylene is assessed by the application of the method of Dow Fire Index . And according to the result of the assessment, it will help to find out the possible factors leading to accident ,and to appraise the serious injury possibility of casualty and safety countermeasures for accident prevention are put forward.
9.Based on the analysis on risk factors in the production system of polypropylene workshop in a chemical plant,the fire explosion risk in such main dangerous units as polymerization and flash distillation,raw material refining,tail gas reclaim and northern zone of canned propylene is assessed by the application of the method of Dow Fire Index V.7.0.And according to the result of the assessment,safety countermeasures for accident prevention are put forward.
