Patent ID: 6899452

Claim:
An apparatus for the preparation and supply of a polymerization inhibitor solution (PIS) which is used in a chemical plant handling an easily polymerizable compound by adiusting a polymerization inhibitor with a concentration adjusting liquid (CAL), and continuing a stable supply of the PIS at an adequate sten in the chemical plant, comprising: at least two tanks serially connected with a pipeline, wherein one of the tanks is a PIS preparation tank and another of the tanks is a PIS supply tank; a stirring device, a liquid level detector, a polymerization inhibitor input port, a concentration-adjusting liquid input port, and a polymerization inhibitor solution feed opening, each being installed in the PIS preparation tank and the polymerization inhibitor input port is connected to a hopper; a concentration-adiusting liquid tank connected to the preparation tank; and a feed onening canable of extracting the PIS from the PIS supply tank at an adequate step in the chemical plant, the feeding opening connected to a next step in the chemical plant through the medium of a pipeline.