Abstract: A method for preparing a supported olefin polymerization catalyst, comprising: step 1, activating a COF at 0° C.-800° C. for 0.1-48 hours under inert atmosphere or vacuum protection; optionally, step 2, reacting the activated COF with an auxiliary agent in a reaction medium at a temperature of 5° C.-120° C. under inert atmosphere or vacuum protection, and performing solid-liquid separation to obtain a solid phase material, wherein the auxiliary agent is selected from a metal alkyl compound, boron halothane, an alkyl aluminum oxide, a modified methyl aluminoxane, a Lewis acid, and a Grignard reagent; and step 3, under inert atmosphere or vacuum protection, reacting the solid phase material with the olefin polymerization catalyst in a reaction medium at ?30° C.-150° C., performing solid-liquid separation, and collecting the solid phase material as the supported olefin polymerization catalyst. A supported olefin polymerization catalyst and an application thereof.

Abstract: The instant disclosure relates to a granular bed filtration system with gas entrained recycling for thermal power plants to filter dust from the exhaust gas. The granular bed filtration system comprises a flow channel, a gas intake, a gas exhaust portion, a granular sieving unit, a vacuum, a cyclone separator and a pneumatic transporting device. The flow channels guide filtering media to filter the inlet gas, and then the filtered gas is exhausted through the gas exhaust outside of the granular bed filtration system. The granular sieving unit separates the filtering media and dust. The vacuum, pneumatic transporting device and cyclone separator repeatedly deliver the filtering media by gas-entrainment recycle.

Abstract: The instant disclosure relates to a granular bed filtration system with gas entrained recycling for thermal power plants to filter dust from the exhaust gas. The granular bed filtration system comprises a flow channel, a gas intake, a gas exhaust portion, a granular sieving unit, a vacuum, a cyclone separator and a pneumatic transporting device. The flow channels guide filtering media to filter the inlet gas, and then the filtered gas is exhausted through the gas exhaust outside of the granular bed filtration system. The granular sieving unit separates the filtering media and dust. The vacuum, pneumatic transporting device and cyclone separator repeatedly deliver the filtering media by gas-entrainment recycle.