The invention relates to a process for cooling polymerization reactors in the preparation of polyolefins, the polymerization being carried out in a first reactor and in at least one further reactor, the further reactor or reactors being connected downstream of the first reactor and each being cooled...http://www.google.ca/patents/US6235852?utm_source=gb-gplus-sharePatent US6235852 - Optimization of a cooling water system of a polyolefin production unit
