초록 ▼

A process is disclosed for removing particulate product from a fluidized bed reactor to optimize, within the constraints of the product removal cycle, conservation of gas in which the product is entrained. Data are compiled on the time required for equalizing pressure between product discharge tanks

A process is disclosed for removing particulate product from a fluidized bed reactor to optimize, within the constraints of the product removal cycle, conservation of gas in which the product is entrained. Data are compiled on the time required for equalizing pressure between product discharge tanks, and these data are used to determine the optimum times for various valves to be open. Product movement steps and equalization steps can be performed simultaneously.

대표청구항 ▼

1. A method of recovering a solid, particulate polymer from a gas-phase, fluidized bed reactor, the reactor containing (i) a fluidizing gas, and (ii) the polymer in a fluidized state at an operating pressure, the method comprising:Transferring at least a portion of the polymer and the fluidizing gas

1. A method of recovering a solid, particulate polymer from a gas-phase, fluidized bed reactor, the reactor containing (i) a fluidizing gas, and (ii) the polymer in a fluidized state at an operating pressure, the method comprising:Transferring at least a portion of the polymer and the fluidizing gas from the reactor through a first connection to a first vessel, the first vessel having a pressure less than the operating pressure of the reactor; Transferring a portion of the gas in the first vessel through a second connection to a second vessel such that gas remains in the first vessel, the second vessel having a pressure less than the first vessel; Transferring the polymer and the gas remaining in the first vessel through a third connection to a third vessel, the third vessel having a pressure less than the first vessel; Transferring at least a portion of the gas in the third vessel through a fourth connection to a fourth vessel, the fourth vessel having a pressure less than the third vessel; and Transferring the polymer in the third vessel through a firth connection to a fifth vessel, the fifth vessel having a pressure less than the third vessel.