Patent ID: 8710161

Claim:
A method for transforming a single reactor line into a double reactor line comprising: a process selected from: adding a second single reactor line upstream of a first existing single reactor line, wherein the second single reactor line is smaller than or of the same size as the first existing single reactor line; and transforming the first existing single reactor line into a double reactor line, wherein the first existing single reactor line comprises at least 6 legs, and wherein the first existing single reactor line is transformed by: rearranging connections between the legs in order to obtain a first reactor line and a second reactor line, wherein the first reactor line is smaller than or of the same size as the second reactor line; adding a pump to the first reactor line, the second reactor line or combinations thereof; and adding a continuous transfer line to transport polymer from the first reactor line to the second reactor line; and wherein the first existing single reactor line comprises two or more settling legs configured to sequentially discharge settled polymer slurry, wherein the first existing single reactor line is equipped with a flash tank for separating solid polymer product from flash vapor, and wherein the flash vapor is sent to a system of at least two separating columns allowing the separation of its constituents into monomer, diluent and comonomer.