Cracking process

Details Cracking process Cracking process

C - Chemistry, Metallurgy

07

C

260/708.7, 260/6

C07C 2/00 (2006.01) C07C 4/22 (2006.01)

Patent

CA 1055531

ABSTRACT OF THE DISCLOSURE A process for cracking polyethylene or polypropylene to their monomers, comprising the following steps: (a) converting the polymer into a fluidized partlculate state or liquid droplet form; (b) introducing the polymer from step (a) in droplet or particulate form into a reaction zone and admixing said polymer with a hot inert gas or mixture of hot inert gases in the reaction zone wherein the weight ratio of gas to polymer is about 1 to about 8 parts of gas per part of polymer, the temperature of the gas is such as to heat the polymer to a temperature in the range of about 800°C. to about 1050°C., and the residence time in the reaction zone is about 10 to about 100 milliseconds; and (c) quenching effluent from the reaction zone and recovering the monomer product. 1.

231878

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