| 摘要 |
A continuous process for the production of polyadducts of alkylene oxide on a chain initiator with at least one active hydrogen comprises the step of: (a) providing n reaction units constituted by a tubular reactor (11), and a heat exchanger (14) downstream of the tubular reaction (11); (b) supplying the preheated chain initiator and the alkylene oxide to the reactor of the first reaction unit; (c) reacting the chain initiator with the alkylene oxide to obtain a first mixture; (d) cooling the first mixture by means of the heat exchanger (14); (e) supplying the reactor of the following reaction unit with the cooled mixture and with alkylene oxide; (f) repeating the procedure until the last reaction unit and then discharging the last mixture containing the desired product. The tubular reactors are vertical and the chain initiator and alkylene oxide are sprayed into the top of the reactor where a gas liquid reaction occurs. |
