On August 10, 2018, Changling branch of Sinopec went to Jiangsu torchi engineering and Technology Development Co., Ltd. for field investigation, and conducted technical exchange on the key equipment "oxidation tail gas high efficiency coalescence separator" of the first set of domestic self-developed 100000 t / a hppo hydrogen peroxide propylene oxide plant, Sinopec has opened the first place of hydrogen peroxide propylene oxide plant Step, after that, this project will be listed in the "ten dragon" plan of Sinopec science and technology research, and become the top scientific research project of Sinopec.