Method and Apparatus for controlling of Pressure Difference in Multi Fluidized Beds System during Pressurization and Depressurization and Multi Fluidized Beds System including the Apparatus for controlling

摘要

The present invention relates to a differential pressure control apparatus, a differential pressure control method, and a high-pressure multi-top fluidized bed system having the differential pressure control apparatus in a process of increasing and decreasing the pressure of a high-pressure multi-top fluidized bed. A plurality of cyclones that are provided on the side of the discharge portion of each of the fluidized beds to discharge the gas suspended in the fluidized bed and the solid medium through the gas discharge pipe; And a loop chamber provided between the fluidized bed and preventing a gas mixture and a solid backflow from flowing between the plurality of fluidized beds. In the multi-bed fluidized bed system, when the pressure of the multi-bed fluidized bed system operated at high pressure is raised or lowered, A pressure measuring unit for measuring in real time the internal pressures of each of the plurality of fluidized beds; A pressure leveling pipe connecting the plurality of gas discharge pipes; A differential pressure measuring unit for measuring a differential pressure between two fluidized beds connected to the pressure leveling pipe in real time; And a pressure control valve provided in each of the gas discharge pipes and controlling a pressure of each of the fluidized bed based on the differential pressure measurement unit and the value measured by the pressure measurement unit. To a differential pressure control apparatus in a descending process.;