Process for the production of polyolefins in an autoclave reactor

摘要

PCT No. PCT/NO94/00201 Sec. 371 Date Jul. 24, 1996 Sec. 102(e) Date Jul. 24, 1996 PCT Filed Dec. 12, 1994 PCT Pub. No. WO95/16517 PCT Pub. Date Jun. 22, 1995An improved process for the production of polyolefins in an autoclave reactor having several reaction zones operated at a pressure of 100 to 300 MPa and a temperature of 100 to 300 DEG C. is disclosed. Dunng operation, temperatures are measured continuously inside the autoclave reactor at specific points distributed along the reactor length, each of said measured temperatures is compared with a corresponding preset temperature and the detected deviation between each pair of preset and measured temperatures is used in regulating the amount of monomer and initiator fed into the autoclave through several feed inlets distributed along the reactor length, in order to minimize the temperature deviations and thus obtain an improved control of the polymerization process.