| 摘要 |
Apparatus is provided for controlling a tubular polymerisation reactor (10) having a feed line (4) for a raw material to be polymerised, a cooling circuit for cooling the reactor with a flow of coolant, and an exit line (8) for a product of polymerisation. The apparatus comprises a quality sensor (22) for sensing the actual quality of the product in the exit line (8), a quality controller (20) for receiving a desired product quality set point and comparing it with the actual quality of the product to generate a desired temperature value for the reactor (10), temperature sensors (30, 34) for determining the maximum temperature of the reactor, and a temperature controller (26) for controlling the amount of coolant supplied to the reactor by the cooling circuit. The temperature controller (26) compares the maximum temperature of the reactor with a desired temperature value therefor corresponding to the desired quantity to control the cooling circuit accordingly. A production rate controller (46) controls the rate of production by regulating the amount of raw material flow to the reactor (10) as a function of the concentration of raw material in the exit line (8) from the reactor. The amount of catalyst (56) supplied to the feed line (4) is regulated as a function of raw material concentration of the feed line (4) or flow of raw material in the feed line. The apparatus can optimise the process by maximising reactor temperature, catalyst flow rate, coolant flow rate, reactor exit temperature and maximum polymerisation in the reactor. |
