Processing method for ketoxime type silane byproduct ketoxime salt

The invention discloses a processing method for a ketoxime type silane byproduct ketoxime salt. The method comprises the following steps: after settling separation and layering through a two-phase separator in the production process of ketoxime type silane, separating lower-layer ketoxime hydrochloride precipitate, then carrying out complete mixing with water in a mixer, carrying out filtering, allowing the filtered mixture to enter a reactive rectifying column and carrying out hydrolysis reaction so as to generate a mixture of hydroxylammonium chloride and ketone, discharging ketone from the top of the rectifying column, subjecting a part of a hydroxylammonium chloride solution produced from the bottom of the rectifying column to recycling and the other part of the solution to crystallization, filtering and drying so as to obtain a hydroxylammonium chloride product, and allowing obtained filtrate to return to the rectifying column for recycling. According to the invention, the byproduct ketoxime hydrochloride in the production process of ketoxime type silane is used as a raw material, so cost of treating ketoxime hydrochloride in the production process of ketoxime type silane is reduced, and acid cost of production of hydroxylammonium chloride is saved at the same time; and the use of the byproduct ketoxime hydrochloride in the production process of ketoxime type silane as the raw material is favorable for circulation of process water in a production system and greatly reduces wastewater discharge of production equipment.