METHOD FOR IMPROVING PRODUCTIVITY OF LOW DENSITY POLYETHYLENE IN A TUBULAR REACTOR

摘要

A method for improving the productivity of low-density polyethylene is provided to secure the stable operation condition and maximize the productivity of the low-density polyethylene, by inputting an anti-fouling agent in a pipe type reactor so as to suppress the fouling phenomenon. In producing a low-density polyethylene by performing a high-pressure type continuous polymerization reaction within a pipe type reactor, an anti-fouling agent is inputted in the pipe type reactor. The anti-fouling agent is 2,6-di-tert-butyl-4-ethylphenol. The process of inputting the anti-fouling agent in the pipe type reactor is performed such that the input rate of the anti-fouling agent is equal to 0.0001-0.02% of the entire input rate of the reactor.