Methyl heptenone preparing and refining process

The methyl heptenone preparing and refining process includes the following steps: the condensation of chloroisoamylene and acetone inside sodium hydroxide aqua in the presence of ammonium cetyl trimethyl bromide as catalyst via stirring and filtering to eliminate reaction produced sodium chloride solid grain; letting the reaction product stand to laminate for separate oil phase and water phase; concentrating water phase for reuse; recovering unreacted acetone in an acetone recovering and rectifying tower to obtain reused acetone from the tower top; feeding the caldron material of the acetone recovering and rectifying tower to a reaction and refining tower for double acetol decomposition and refining in sodium hydroxide aqua; eliminating heavy component impurity from the caldron material of reaction and refining tower in a heavy component eliminating rectifying tower; and eliminating light component impurity of the tower top material from the heavy component eliminating rectifying tower and obtain the product.