Application of ultra-high pressure water jet technology in cleaning polyethylene reactor

　　The process feature of polyethylene plant of PetroChina Liaoyang Branch is slurry method. The sticky substances on inner wall of reaction kettle increase with the operation, and the load of plant decreases continuously, so periodic cleaning must be carried out timely. Traditional cleaning methods all use manual tools to enter the kettle for cleaning, which is time-consuming and labor-intensive, with high risk factor and low efficiency.

　　In June 2017, polyethylene workshop tried to replace traditional manual cleaning with ultra-high pressure water jet cleaning technology, and achieved ideal results in terms of cleaning quality, progress, and safety.