Cleaning method of plant components

(57) Abstract: (meth) plant components which are used for the manufacture or processing of the acrylate ester, (a) the plant components to empty, 5-50% by weight of (b) plant components flushed with an alkali metal hydroxide solution, to remove the alkali metal hydroxide solution from (c) plant components, optionally (d), washing the plant components in water, and, (e) requires depending on, it is cleaned by drying the plant components.