METHOD OF PREVENTING CLOGGING OF APPARATUS FOR HANDLING (METH)ACRYLIC ACID AND ESTER THEREOF

摘要

In a nozzle or a pipe for connecting a measuring device which monitors a process state of (meth)acrylic acid and esters thereof and a gas-phase part and/or a liquid-phase part of an apparatus for handling (meth)acrylic acid and esters thereof, a gas comprising at least one of an inert gas, oxygen, and a gas having an effect of inhibiting polymerization is blown into the nozzle and/or the pipe connected to the gas-phase part of the apparatus at a flow rate of 0.03 to 1 m/second and a liquid medium is blown into the nozzle and/or the pipe connected to the liquid-phase part of the apparatus at a flow rate of 0.03 to 1 m/second to prevent a clogging of the apparatus for handling (meth)acrylic acid and esters thereof. According to the method, stable and efficient operation of the apparatus for handling (meth)acrylic acid and the like and a decrease of a cost for production or storage of (meth)acrylic acid can be achieved.