| 摘要 |
A reaction product is formed by a process which involves the transfer of the reaction product from an autoclave 10 to a receiving vessel 12 at a substantially constant flow rate. Just prior to this transfer, the pressure in the receiving vessel 12 is brought up to the pressure in the autoclave 10 by passing gas from the autoclave to the receiving vessel. The flow of gas from the autoclave 10 to the receiving vessel 12 is then stopped, and the pressure in the receiving vessel is allowed to drop due to transfer of heat from the gas to the walls of the receiving vessel. The resulting pressure difference between the autoclave 10 and the receiving vessel 12 is used to initiate the transfer of the reaction products from the autoclave to the receiving vessel. A pressure release valve 12d on the receiving vessel is then controlled by means of a signal derived from a flow meter 13 which measures the flow rate of the reaction products flowing from the autoclave 10 to the receiving vessel 12 to maintain constant this flow rate. |
